Merge branch 'lightcli' into light-filters

Cargo.lock

@@ -10,7 +10,6 @@ dependencies = [
  "docopt 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "env_logger 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "ethcore 1.7.0",
- "ethcore-dapps 1.7.0",
  "ethcore-devtools 1.7.0",
  "ethcore-io 1.7.0",
  "ethcore-ipc 1.7.0",
@@ -24,16 +23,17 @@ dependencies = [
  "ethcore-signer 1.7.0",
  "ethcore-stratum 1.7.0",
  "ethcore-util 1.7.0",
+ "ethkey 0.2.0",
  "ethsync 1.7.0",
  "evmbin 0.1.0",
  "fdlimit 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "futures 0.1.11 (registry+https://github.com/rust-lang/crates.io-index)",
- "hyper 0.10.0-a.0 (git+https://github.com/paritytech/hyper)",
  "isatty 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "jsonrpc-core 7.0.0 (git+https://github.com/paritytech/jsonrpc.git?branch=parity-1.7)",
  "log 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "num_cpus 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "number_prefix 0.2.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "parity-dapps 1.7.0",
  "parity-hash-fetch 1.7.0",
  "parity-ipfs-api 1.7.0",
  "parity-local-store 0.1.0",
@@ -41,6 +41,7 @@ dependencies = [
  "parity-rpc-client 1.4.0",
  "parity-updater 1.7.0",
  "path 0.1.0",
+ "pretty_assertions 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "regex 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "rlp 0.1.0",
  "rpassword 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -310,6 +311,11 @@ dependencies = [
  "rand 0.3.14 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "difference"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
 name = "docopt"
 version = "0.7.0"
@@ -362,7 +368,7 @@ dependencies = [
 
 [[package]]
 name = "ethabi"
-version = "1.0.0"
+version = "1.0.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "rustc-serialize 0.3.19 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -393,7 +399,7 @@ dependencies = [
  "clippy 0.0.103 (registry+https://github.com/rust-lang/crates.io-index)",
  "crossbeam 0.2.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "env_logger 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "ethabi 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "ethabi 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "ethash 1.7.0",
  "ethcore-bloom-journal 0.1.0",
  "ethcore-devtools 1.7.0",
@@ -408,6 +414,7 @@ dependencies = [
  "ethkey 0.2.0",
  "ethstore 0.1.0",
  "evmjit 1.7.0",
+ "futures 0.1.11 (registry+https://github.com/rust-lang/crates.io-index)",
  "hardware-wallet 1.7.0",
  "hyper 0.10.0-a.0 (git+https://github.com/paritytech/hyper)",
  "itertools 0.5.9 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -415,6 +422,7 @@ dependencies = [
  "linked-hash-map 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "lru-cache 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "native-contracts 0.1.0",
  "num 0.1.32 (registry+https://github.com/rust-lang/crates.io-index)",
  "num_cpus 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand 0.3.14 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -445,40 +453,6 @@ dependencies = [
  "siphasher 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
-[[package]]
-name = "ethcore-dapps"
-version = "1.7.0"
-dependencies = [
- "base32 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "clippy 0.0.103 (registry+https://github.com/rust-lang/crates.io-index)",
- "env_logger 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "ethcore-devtools 1.7.0",
- "ethcore-rpc 1.7.0",
- "ethcore-util 1.7.0",
- "fetch 0.1.0",
- "futures 0.1.11 (registry+https://github.com/rust-lang/crates.io-index)",
- "jsonrpc-core 7.0.0 (git+https://github.com/paritytech/jsonrpc.git?branch=parity-1.7)",
- "jsonrpc-http-server 7.0.0 (git+https://github.com/paritytech/jsonrpc.git?branch=parity-1.7)",
- "jsonrpc-server-utils 7.0.0 (git+https://github.com/paritytech/jsonrpc.git?branch=parity-1.7)",
- "linked-hash-map 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "mime 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "mime_guess 1.6.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "parity-dapps-glue 1.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "parity-hash-fetch 1.7.0",
- "parity-reactor 0.1.0",
- "parity-ui 1.7.0",
- "rand 0.3.14 (registry+https://github.com/rust-lang/crates.io-index)",
- "rustc-serialize 0.3.19 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 0.9.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde_derive 0.9.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde_json 0.9.5 (registry+https://github.com/rust-lang/crates.io-index)",
- "time 0.1.35 (registry+https://github.com/rust-lang/crates.io-index)",
- "unicase 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "url 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "zip 0.1.18 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "ethcore-devtools"
 version = "1.7.0"
@@ -642,6 +616,7 @@ dependencies = [
  "jsonrpc-http-server 7.0.0 (git+https://github.com/paritytech/jsonrpc.git?branch=parity-1.7)",
  "jsonrpc-ipc-server 7.0.0 (git+https://github.com/paritytech/jsonrpc.git?branch=parity-1.7)",
  "jsonrpc-macros 7.0.0 (git+https://github.com/paritytech/jsonrpc.git?branch=parity-1.7)",
+ "jsonrpc-minihttp-server 7.0.0 (git+https://github.com/paritytech/jsonrpc.git?branch=parity-1.7)",
  "log 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "order-stat 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "parity-reactor 0.1.0",
@@ -661,6 +636,7 @@ dependencies = [
 name = "ethcore-secretstore"
 version = "1.0.0"
 dependencies = [
+ "byteorder 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "ethcore-devtools 1.7.0",
  "ethcore-ipc 1.7.0",
  "ethcore-ipc-codegen 1.7.0",
@@ -668,9 +644,18 @@ dependencies = [
  "ethcore-util 1.7.0",
  "ethcrypto 0.1.0",
  "ethkey 0.2.0",
+ "futures 0.1.11 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-cpupool 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "hyper 0.10.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "parking_lot 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rustc-serialize 0.3.19 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 0.9.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde_derive 0.9.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde_json 0.9.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "tokio-core 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "tokio-proto 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "tokio-service 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "url 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -946,6 +931,14 @@ dependencies = [
  "kernel32-sys 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "heck"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "unicode-segmentation 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "hidapi"
 version = "0.3.1"
@@ -1080,7 +1073,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 [[package]]
 name = "jsonrpc-core"
 version = "7.0.0"
-source = "git+https://github.com/paritytech/jsonrpc.git?branch=parity-1.7#f4521e8a543145bec7936de0f875d6550e92c7f7"
+source = "git+https://github.com/paritytech/jsonrpc.git?branch=parity-1.7#32c1c083139db50db6a5d532ccfc2004236dbfc3"
 dependencies = [
  "futures 0.1.11 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1092,7 +1085,7 @@ dependencies = [
 [[package]]
 name = "jsonrpc-http-server"
 version = "7.0.0"
-source = "git+https://github.com/paritytech/jsonrpc.git?branch=parity-1.7#f4521e8a543145bec7936de0f875d6550e92c7f7"
+source = "git+https://github.com/paritytech/jsonrpc.git?branch=parity-1.7#32c1c083139db50db6a5d532ccfc2004236dbfc3"
 dependencies = [
  "hyper 0.10.0-a.0 (git+https://github.com/paritytech/hyper)",
  "jsonrpc-core 7.0.0 (git+https://github.com/paritytech/jsonrpc.git?branch=parity-1.7)",
@@ -1105,7 +1098,7 @@ dependencies = [
 [[package]]
 name = "jsonrpc-ipc-server"
 version = "7.0.0"
-source = "git+https://github.com/paritytech/jsonrpc.git?branch=parity-1.7#f4521e8a543145bec7936de0f875d6550e92c7f7"
+source = "git+https://github.com/paritytech/jsonrpc.git?branch=parity-1.7#32c1c083139db50db6a5d532ccfc2004236dbfc3"
 dependencies = [
  "jsonrpc-core 7.0.0 (git+https://github.com/paritytech/jsonrpc.git?branch=parity-1.7)",
  "jsonrpc-server-utils 7.0.0 (git+https://github.com/paritytech/jsonrpc.git?branch=parity-1.7)",
@@ -1117,17 +1110,31 @@ dependencies = [
 [[package]]
 name = "jsonrpc-macros"
 version = "7.0.0"
-source = "git+https://github.com/paritytech/jsonrpc.git?branch=parity-1.7#f4521e8a543145bec7936de0f875d6550e92c7f7"
+source = "git+https://github.com/paritytech/jsonrpc.git?branch=parity-1.7#32c1c083139db50db6a5d532ccfc2004236dbfc3"
 dependencies = [
  "jsonrpc-core 7.0.0 (git+https://github.com/paritytech/jsonrpc.git?branch=parity-1.7)",
  "jsonrpc-pubsub 7.0.0 (git+https://github.com/paritytech/jsonrpc.git?branch=parity-1.7)",
  "serde 0.9.6 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "jsonrpc-minihttp-server"
+version = "7.0.0"
+source = "git+https://github.com/paritytech/jsonrpc.git?branch=parity-1.7#32c1c083139db50db6a5d532ccfc2004236dbfc3"
+dependencies = [
+ "jsonrpc-core 7.0.0 (git+https://github.com/paritytech/jsonrpc.git?branch=parity-1.7)",
+ "jsonrpc-server-utils 7.0.0 (git+https://github.com/paritytech/jsonrpc.git?branch=parity-1.7)",
+ "log 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "parking_lot 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "tokio-minihttp 0.1.0 (git+https://github.com/tomusdrw/tokio-minihttp)",
+ "tokio-proto 0.1.0 (git+https://github.com/tomusdrw/tokio-proto)",
+ "tokio-service 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "jsonrpc-pubsub"
 version = "7.0.0"
-source = "git+https://github.com/paritytech/jsonrpc.git?branch=parity-1.7#f4521e8a543145bec7936de0f875d6550e92c7f7"
+source = "git+https://github.com/paritytech/jsonrpc.git?branch=parity-1.7#32c1c083139db50db6a5d532ccfc2004236dbfc3"
 dependencies = [
  "jsonrpc-core 7.0.0 (git+https://github.com/paritytech/jsonrpc.git?branch=parity-1.7)",
  "log 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1137,7 +1144,7 @@ dependencies = [
 [[package]]
 name = "jsonrpc-server-utils"
 version = "7.0.0"
-source = "git+https://github.com/paritytech/jsonrpc.git?branch=parity-1.7#f4521e8a543145bec7936de0f875d6550e92c7f7"
+source = "git+https://github.com/paritytech/jsonrpc.git?branch=parity-1.7#32c1c083139db50db6a5d532ccfc2004236dbfc3"
 dependencies = [
  "jsonrpc-core 7.0.0 (git+https://github.com/paritytech/jsonrpc.git?branch=parity-1.7)",
  "log 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1148,7 +1155,7 @@ dependencies = [
 [[package]]
 name = "jsonrpc-tcp-server"
 version = "7.0.0"
-source = "git+https://github.com/paritytech/jsonrpc.git?branch=parity-1.7#f4521e8a543145bec7936de0f875d6550e92c7f7"
+source = "git+https://github.com/paritytech/jsonrpc.git?branch=parity-1.7#32c1c083139db50db6a5d532ccfc2004236dbfc3"
 dependencies = [
  "jsonrpc-core 7.0.0 (git+https://github.com/paritytech/jsonrpc.git?branch=parity-1.7)",
  "jsonrpc-server-utils 7.0.0 (git+https://github.com/paritytech/jsonrpc.git?branch=parity-1.7)",
@@ -1396,6 +1403,25 @@ dependencies = [
  "libc 0.2.21 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "native-contract-generator"
+version = "0.1.0"
+dependencies = [
+ "ethabi 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "heck 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "native-contracts"
+version = "0.1.0"
+dependencies = [
+ "byteorder 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "ethabi 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "ethcore-util 1.7.0",
+ "futures 0.1.11 (registry+https://github.com/rust-lang/crates.io-index)",
+ "native-contract-generator 0.1.0",
+]
+
 [[package]]
 name = "native-tls"
 version = "0.1.0"
@@ -1577,6 +1603,38 @@ dependencies = [
  "stable_deref_trait 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "parity-dapps"
+version = "1.7.0"
+dependencies = [
+ "base32 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "clippy 0.0.103 (registry+https://github.com/rust-lang/crates.io-index)",
+ "env_logger 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "ethcore-devtools 1.7.0",
+ "ethcore-util 1.7.0",
+ "fetch 0.1.0",
+ "futures 0.1.11 (registry+https://github.com/rust-lang/crates.io-index)",
+ "jsonrpc-core 7.0.0 (git+https://github.com/paritytech/jsonrpc.git?branch=parity-1.7)",
+ "jsonrpc-http-server 7.0.0 (git+https://github.com/paritytech/jsonrpc.git?branch=parity-1.7)",
+ "linked-hash-map 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "mime 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "mime_guess 1.6.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "parity-dapps-glue 1.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "parity-hash-fetch 1.7.0",
+ "parity-reactor 0.1.0",
+ "parity-ui 1.7.0",
+ "rand 0.3.14 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rustc-serialize 0.3.19 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 0.9.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde_derive 0.9.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde_json 0.9.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "time 0.1.35 (registry+https://github.com/rust-lang/crates.io-index)",
+ "unicase 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "url 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "zip 0.1.18 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "parity-dapps-glue"
 version = "1.7.0"
@@ -1595,7 +1653,7 @@ dependencies = [
 name = "parity-hash-fetch"
 version = "1.7.0"
 dependencies = [
- "ethabi 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "ethabi 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "ethcore-util 1.7.0",
  "fetch 0.1.0",
  "futures 0.1.11 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1705,7 +1763,7 @@ dependencies = [
 name = "parity-updater"
 version = "1.7.0"
 dependencies = [
- "ethabi 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "ethabi 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "ethcore 1.7.0",
  "ethcore-ipc 1.7.0",
  "ethcore-ipc-codegen 1.7.0",
@@ -1799,6 +1857,14 @@ name = "podio"
 version = "0.1.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
+name = "pretty_assertions"
+version = "0.1.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "difference 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "primal"
 version = "0.2.3"
@@ -2404,6 +2470,21 @@ dependencies = [
  "tokio-service 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "tokio-minihttp"
+version = "0.1.0"
+source = "git+https://github.com/tomusdrw/tokio-minihttp#8acbafae3e77e7f7eb516b441ec84695580221dd"
+dependencies = [
+ "futures 0.1.11 (registry+https://github.com/rust-lang/crates.io-index)",
+ "httparse 1.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "net2 0.2.23 (registry+https://github.com/rust-lang/crates.io-index)",
+ "time 0.1.35 (registry+https://github.com/rust-lang/crates.io-index)",
+ "tokio-core 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "tokio-proto 0.1.0 (git+https://github.com/tomusdrw/tokio-proto)",
+ "tokio-service 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "tokio-named-pipes"
 version = "0.1.0"
@@ -2414,6 +2495,22 @@ dependencies = [
  "tokio-core 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "tokio-proto"
+version = "0.1.0"
+source = "git+https://github.com/tomusdrw/tokio-proto#f6ee08cb594fa2fc1b4178eaaca0855d66e68fd3"
+dependencies = [
+ "futures 0.1.11 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "net2 0.2.23 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rand 0.3.14 (registry+https://github.com/rust-lang/crates.io-index)",
+ "slab 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "smallvec 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "take 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "tokio-core 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "tokio-service 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "tokio-proto"
 version = "0.1.0"
@@ -2505,6 +2602,11 @@ name = "unicode-normalization"
 version = "0.1.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
+name = "unicode-segmentation"
+version = "1.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
 name = "unicode-xid"
 version = "0.0.4"
@@ -2674,13 +2776,14 @@ dependencies = [
 "checksum ctrlc 1.1.1 (git+https://github.com/paritytech/rust-ctrlc.git)" = "<none>"
 "checksum daemonize 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "271ec51b7e0bee92f0d04601422c73eb76ececf197026711c97ad25038a010cf"
 "checksum deque 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)" = "1614659040e711785ed8ea24219140654da1729f3ec8a47a9719d041112fe7bf"
+"checksum difference 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)" = "b3304d19798a8e067e48d8e69b2c37f0b5e9b4e462504ad9e27e9f3fce02bba8"
 "checksum docopt 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)" = "ab32ea6e284d87987066f21a9e809a73c14720571ef34516f0890b3d355ccfd8"
 "checksum dtoa 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "5edd69c67b2f8e0911629b7e6b8a34cb3956613cd7c6e6414966dee349c2db4f"
 "checksum either 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)" = "3d2b503c86dad62aaf414ecf2b8c527439abedb3f8d812537f0b12bfd6f32a91"
 "checksum elastic-array 0.6.0 (git+https://github.com/paritytech/elastic-array)" = "<none>"
 "checksum env_logger 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)" = "e3856f1697098606fc6cb97a93de88ca3f3bc35bb878c725920e6e82ecf05e83"
 "checksum eth-secp256k1 0.5.6 (git+https://github.com/paritytech/rust-secp256k1)" = "<none>"
-"checksum ethabi 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)" = "5d8f6cc4c1acd005f48e1d17b06a461adac8fb6eeeb331fbf19a0e656fba91cd"
+"checksum ethabi 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)" = "63df67d0af5e3cb906b667ca1a6e00baffbed87d0d8f5f78468a1f5eb3a66345"
 "checksum fdlimit 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "b1ee15a7050e5580b3712877157068ea713b245b080ff302ae2ca973cfcd9baa"
 "checksum flate2 0.2.14 (registry+https://github.com/rust-lang/crates.io-index)" = "3eeb481e957304178d2e782f2da1257f1434dfecbae883bafb61ada2a9fea3bb"
 "checksum futures 0.1.11 (registry+https://github.com/rust-lang/crates.io-index)" = "8e51e7f9c150ba7fd4cee9df8bf6ea3dea5b63b68955ddad19ccd35b71dcfb4d"
@@ -2690,6 +2793,7 @@ dependencies = [
 "checksum glob 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)" = "8be18de09a56b60ed0edf84bc9df007e30040691af7acd1c41874faac5895bfb"
 "checksum hamming 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)" = "65043da274378d68241eb9a8f8f8aa54e349136f7b8e12f63e3ef44043cc30e1"
 "checksum heapsize 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)" = "abb306abb8d398e053cfb1b3e7b72c2f580be048b85745c52652954f8ad1439c"
+"checksum heck 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "6f807d2f64cc044a6bcf250ff23e59be0deec7a16612c014f962a06fa7e020f9"
 "checksum hidapi 0.3.1 (git+https://github.com/paritytech/hidapi-rs)" = "<none>"
 "checksum httparse 1.1.2 (registry+https://github.com/rust-lang/crates.io-index)" = "46534074dbb80b070d60a5cb8ecadd8963a00a438ae1a95268850a7ef73b67ae"
 "checksum hyper 0.10.0-a.0 (git+https://github.com/paritytech/hyper)" = "<none>"
@@ -2706,6 +2810,7 @@ dependencies = [
 "checksum jsonrpc-http-server 7.0.0 (git+https://github.com/paritytech/jsonrpc.git?branch=parity-1.7)" = "<none>"
 "checksum jsonrpc-ipc-server 7.0.0 (git+https://github.com/paritytech/jsonrpc.git?branch=parity-1.7)" = "<none>"
 "checksum jsonrpc-macros 7.0.0 (git+https://github.com/paritytech/jsonrpc.git?branch=parity-1.7)" = "<none>"
+"checksum jsonrpc-minihttp-server 7.0.0 (git+https://github.com/paritytech/jsonrpc.git?branch=parity-1.7)" = "<none>"
 "checksum jsonrpc-pubsub 7.0.0 (git+https://github.com/paritytech/jsonrpc.git?branch=parity-1.7)" = "<none>"
 "checksum jsonrpc-server-utils 7.0.0 (git+https://github.com/paritytech/jsonrpc.git?branch=parity-1.7)" = "<none>"
 "checksum jsonrpc-tcp-server 7.0.0 (git+https://github.com/paritytech/jsonrpc.git?branch=parity-1.7)" = "<none>"
@@ -2769,6 +2874,7 @@ dependencies = [
 "checksum phf_shared 0.7.14 (registry+https://github.com/rust-lang/crates.io-index)" = "fee4d039930e4f45123c9b15976cf93a499847b6483dc09c42ea0ec4940f2aa6"
 "checksum pkg-config 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)" = "8cee804ecc7eaf201a4a207241472cc870e825206f6c031e3ee2a72fa425f2fa"
 "checksum podio 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)" = "e5422a1ee1bc57cc47ae717b0137314258138f38fd5f3cea083f43a9725383a0"
+"checksum pretty_assertions 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)" = "2412f3332a07c7a2a50168988dcc184f32180a9758ad470390e5f55e089f6b6e"
 "checksum primal 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)" = "0e31b86efadeaeb1235452171a66689682783149a6249ff334a2c5d8218d00a4"
 "checksum primal-bit 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)" = "464a91febc06166783d4f5ba3577b5ed8dda8e421012df80bfe48a971ed7be8f"
 "checksum primal-check 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "647c81b67bb9551a7b88d0bcd785ac35b7d0bf4b2f358683d7c2375d04daec51"
@@ -2838,7 +2944,9 @@ dependencies = [
 "checksum tokio-core 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)" = "3d1be481b55126f02ef88ff86748086473cb537a949fc4a8f4be403a530ae54b"
 "checksum tokio-io 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "6a278fde45f1be68e44995227d426aaa4841e0980bb0a21b981092f28c3c8473"
 "checksum tokio-line 0.1.0 (git+https://github.com/tokio-rs/tokio-line)" = "<none>"
+"checksum tokio-minihttp 0.1.0 (git+https://github.com/tomusdrw/tokio-minihttp)" = "<none>"
 "checksum tokio-named-pipes 0.1.0 (git+https://github.com/alexcrichton/tokio-named-pipes)" = "<none>"
+"checksum tokio-proto 0.1.0 (git+https://github.com/tomusdrw/tokio-proto)" = "<none>"
 "checksum tokio-proto 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "7c0d6031f94d78d7b4d509d4a7c5e1cdf524a17e7b08d1c188a83cf720e69808"
 "checksum tokio-service 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "24da22d077e0f15f55162bdbdc661228c1581892f52074fb242678d015b45162"
 "checksum tokio-uds 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)" = "ffc7b5fc8e19e220b29566d1750949224a518478eab9cebc8df60583242ca30a"
@@ -2850,6 +2958,7 @@ dependencies = [
 "checksum unicase 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "13a5906ca2b98c799f4b1ab4557b76367ebd6ae5ef14930ec841c74aed5f3764"
 "checksum unicode-bidi 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)" = "c1f7ceb96afdfeedee42bade65a0d585a6a0106f681b6749c8ff4daa8df30b3f"
 "checksum unicode-normalization 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)" = "26643a2f83bac55f1976fb716c10234485f9202dcd65cfbdf9da49867b271172"
+"checksum unicode-segmentation 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "18127285758f0e2c6cf325bb3f3d138a12fee27de4f23e146cd6a179f26c2cf3"
 "checksum unicode-xid 0.0.4 (registry+https://github.com/rust-lang/crates.io-index)" = "8c1f860d7d29cf02cb2f3f359fd35991af3d30bac52c57d265a3c461074cb4dc"
 "checksum unreachable 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "1f2ae5ddb18e1c92664717616dd9549dde73f539f01bd7b77c2edb2446bdff91"
 "checksum untrusted 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)" = "193df64312e3515fd983ded55ad5bcaa7647a035804828ed757e832ce6029ef3"

Cargo.toml

@@ -26,7 +26,6 @@ app_dirs = "1.1.1"
 futures = "0.1"
 fdlimit = "0.1"
 ws2_32-sys = "0.2"
-hyper = { default-features = false, git = "https://github.com/paritytech/hyper" }
 ctrlc = { git = "https://github.com/paritytech/rust-ctrlc.git" }
 jsonrpc-core = { git = "https://github.com/paritytech/jsonrpc.git", branch = "parity-1.7" }
 ethsync = { path = "sync" }
@@ -42,6 +41,7 @@ ethcore-ipc-hypervisor = { path = "ipc/hypervisor" }
 ethcore-light = { path = "ethcore/light" }
 ethcore-logger = { path = "logger" }
 ethcore-stratum = { path = "stratum" }
+ethkey = { path = "ethkey" }
 evmbin = { path = "evmbin" }
 rlp = { path = "util/rlp" }
 rpc-cli = { path = "rpc_cli" }
@@ -51,8 +51,9 @@ parity-ipfs-api = { path = "ipfs" }
 parity-updater = { path = "updater" }
 parity-reactor = { path = "util/reactor" }
 parity-local-store = { path = "local-store" }
-ethcore-dapps = { path = "dapps", optional = true }
 path = { path = "util/path" }
+
+parity-dapps = { path = "dapps", optional = true }
 clippy = { version = "0.0.103", optional = true}
 ethcore-secretstore = { path = "secret_store", optional = true }
 
@@ -61,6 +62,7 @@ rustc_version = "0.2"
 
 [dev-dependencies]
 ethcore-ipc-tests = { path = "ipc/tests" }
+pretty_assertions = "0.1"
 
 [target.'cfg(windows)'.dependencies]
 winapi = "0.2"
@@ -72,18 +74,18 @@ daemonize = "0.2"
 default = ["ui-precompiled"]
 ui = [
 	"dapps",
-	"ethcore-dapps/ui",
+	"parity-dapps/ui",
 	"ethcore-signer/ui",
 ]
 ui-precompiled = [
 	"dapps",
 	"ethcore-signer/ui-precompiled",
-	"ethcore-dapps/ui-precompiled",
+	"parity-dapps/ui-precompiled",
 ]
-dapps = ["ethcore-dapps"]
+dapps = ["parity-dapps"]
 ipc = ["ethcore/ipc", "ethsync/ipc"]
 jit = ["ethcore/jit"]
-dev = ["clippy", "ethcore/dev", "ethcore-util/dev", "ethsync/dev", "ethcore-rpc/dev", "ethcore-dapps/dev", "ethcore-signer/dev"]
+dev = ["clippy", "ethcore/dev", "ethcore-util/dev", "ethsync/dev", "ethcore-rpc/dev", "parity-dapps/dev", "ethcore-signer/dev"]
 json-tests = ["ethcore/json-tests"]
 test-heavy = ["ethcore/test-heavy"]
 ethkey-cli = ["ethcore/ethkey-cli"]

dapps/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 description = "Parity Dapps crate"
-name = "ethcore-dapps"
+name = "parity-dapps"
 version = "1.7.0"
 license = "GPL-3.0"
 authors = ["Parity Technologies <admin@parity.io>"]
@@ -28,11 +28,8 @@ zip = { version = "0.1", default-features = false }
 
 jsonrpc-core = { git = "https://github.com/paritytech/jsonrpc.git", branch = "parity-1.7" }
 jsonrpc-http-server = { git = "https://github.com/paritytech/jsonrpc.git", branch = "parity-1.7" }
-# TODO [ToDr] Temporary solution, server should be merged with RPC.
-jsonrpc-server-utils = { git = "https://github.com/paritytech/jsonrpc.git", branch = "parity-1.7" }
 
 ethcore-devtools = { path = "../devtools" }
-ethcore-rpc = { path = "../rpc" }
 ethcore-util = { path = "../util" }
 fetch = { path = "../util/fetch" }
 parity-hash-fetch = { path = "../hash-fetch" }
@@ -42,7 +39,7 @@ parity-ui = { path = "./ui" }
 clippy = { version = "0.0.103", optional = true}
 
 [features]
-dev = ["clippy", "ethcore-rpc/dev", "ethcore-util/dev"]
+dev = ["clippy", "ethcore-util/dev"]
 
 ui = ["parity-ui/no-precompiled-js"]
 ui-precompiled = ["parity-ui/use-precompiled-js"]

dapps/src/api/api.rs

@@ -14,7 +14,6 @@
 // You should have received a copy of the GNU General Public License
 // along with Parity.  If not, see <http://www.gnu.org/licenses/>.
 
-use std::sync::Arc;
 use unicase::UniCase;
 use hyper::{server, net, Decoder, Encoder, Next, Control};
 use hyper::header;
@@ -26,48 +25,49 @@ use apps::fetcher::Fetcher;
 
 use handlers::extract_url;
 use endpoint::{Endpoint, Endpoints, Handler, EndpointPath};
-use jsonrpc_http_server;
+use jsonrpc_http_server::{self, AccessControlAllowOrigin};
-use jsonrpc_server_utils::cors;
 
 #[derive(Clone)]
-pub struct RestApi {
+pub struct RestApi<F> {
-	cors_domains: Option<Vec<cors::AccessControlAllowOrigin>>,
+	// TODO [ToDr] cors_domains should be handled by the server to avoid duplicated logic.
-	endpoints: Arc<Endpoints>,
+	// RequestMiddleware should be able to tell that cors headers should be included.
-	fetcher: Arc<Fetcher>,
+	cors_domains: Option<Vec<AccessControlAllowOrigin>>,
+	apps: Vec<App>,
+	fetcher: F,
 }
 
-impl RestApi {
+impl<F: Fetcher + Clone> RestApi<F> {
-	pub fn new(cors_domains: Vec<cors::AccessControlAllowOrigin>, endpoints: Arc<Endpoints>, fetcher: Arc<Fetcher>) -> Box<Endpoint> {
+	pub fn new(cors_domains: Vec<AccessControlAllowOrigin>, endpoints: &Endpoints, fetcher: F) -> Box<Endpoint> {
 		Box::new(RestApi {
 			cors_domains: Some(cors_domains),
-			endpoints: endpoints,
+			apps: Self::list_apps(endpoints),
 			fetcher: fetcher,
 		})
 	}
 
-	fn list_apps(&self) -> Vec<App> {
+	fn list_apps(endpoints: &Endpoints) -> Vec<App> {
-		self.endpoints.iter().filter_map(|(ref k, ref e)| {
+		endpoints.iter().filter_map(|(ref k, ref e)| {
 			e.info().map(|ref info| App::from_info(k, info))
 		}).collect()
 	}
 }
 
-impl Endpoint for RestApi {
+impl<F: Fetcher + Clone> Endpoint for RestApi<F> {
 	fn to_async_handler(&self, path: EndpointPath, control: Control) -> Box<Handler> {
-		Box::new(RestApiRouter::new(self.clone(), path, control))
+		Box::new(RestApiRouter::new((*self).clone(), path, control))
 	}
 }
 
-struct RestApiRouter {
+struct RestApiRouter<F> {
-	api: RestApi,
+	api: RestApi<F>,
 	cors_header: Option<header::AccessControlAllowOrigin>,
 	path: Option<EndpointPath>,
 	control: Option<Control>,
 	handler: Box<Handler>,
 }
 
-impl RestApiRouter {
+impl<F: Fetcher> RestApiRouter<F> {
-	fn new(api: RestApi, path: EndpointPath, control: Control) -> Self {
+	fn new(api: RestApi<F>, path: EndpointPath, control: Control) -> Self {
 		RestApiRouter {
 			path: Some(path),
 			cors_header: None,
@@ -114,7 +114,7 @@ impl RestApiRouter {
 	}
 }
 
-impl server::Handler<net::HttpStream> for RestApiRouter {
+impl<F: Fetcher> server::Handler<net::HttpStream> for RestApiRouter<F> {
 
 	fn on_request(&mut self, request: server::Request<net::HttpStream>) -> Next {
 		self.cors_header = jsonrpc_http_server::cors_header(&request, &self.api.cors_domains).into();
@@ -142,7 +142,7 @@ impl server::Handler<net::HttpStream> for RestApiRouter {
 		if let Some(ref hash) = hash { path.app_id = hash.clone().to_owned() }
 
 		let handler = endpoint.and_then(|v| match v {
-			"apps" => Some(response::as_json(&self.api.list_apps())),
+			"apps" => Some(response::as_json(&self.api.apps)),
 			"ping" => Some(response::ping()),
 			"content" => self.resolve_content(hash, path, control),
 			_ => None

dapps/src/apps/fetcher/mod.rs

@@ -47,7 +47,8 @@ pub trait Fetcher: Send + Sync + 'static {
 	fn to_async_handler(&self, path: EndpointPath, control: hyper::Control) -> Box<Handler>;
 }
 
-pub struct ContentFetcher<F: Fetch = FetchClient, R: URLHint + Send + Sync + 'static = URLHintContract> {
+#[derive(Clone)]
+pub struct ContentFetcher<F: Fetch + Clone = FetchClient, R: URLHint + Clone + 'static = URLHintContract> {
 	dapps_path: PathBuf,
 	resolver: R,
 	cache: Arc<Mutex<ContentCache>>,
@@ -57,14 +58,14 @@ pub struct ContentFetcher<F: Fetch = FetchClient, R: URLHint + Send + Sync + 'st
 	fetch: F,
 }
 
-impl<R: URLHint + Send + Sync + 'static, F: Fetch> Drop for ContentFetcher<F, R> {
+impl<R: URLHint + Clone + 'static, F: Fetch + Clone> Drop for ContentFetcher<F, R> {
 	fn drop(&mut self) {
 		// Clear cache path
 		let _ = fs::remove_dir_all(&self.dapps_path);
 	}
 }
 
-impl<R: URLHint + Send + Sync + 'static, F: Fetch> ContentFetcher<F, R> {
+impl<R: URLHint + Clone + 'static, F: Fetch + Clone> ContentFetcher<F, R> {
 
 	pub fn new(resolver: R, sync_status: Arc<SyncStatus>, embeddable_on: Option<(String, u16)>, remote: Remote, fetch: F) -> Self {
 		let mut dapps_path = env::temp_dir();
@@ -97,7 +98,7 @@ impl<R: URLHint + Send + Sync + 'static, F: Fetch> ContentFetcher<F, R> {
 	}
 }
 
-impl<R: URLHint + Send + Sync + 'static, F: Fetch> Fetcher for ContentFetcher<F, R> {
+impl<R: URLHint + Clone + 'static, F: Fetch + Clone> Fetcher for ContentFetcher<F, R> {
 	fn contains(&self, content_id: &str) -> bool {
 		{
 			let mut cache = self.cache.lock();
@@ -233,6 +234,7 @@ mod tests {
 	use page::LocalPageEndpoint;
 	use super::{ContentFetcher, Fetcher};
 
+	#[derive(Clone)]
 	struct FakeResolver;
 	impl URLHint for FakeResolver {
 		fn resolve(&self, _id: Bytes) -> Option<URLHintResult> {

dapps/src/endpoint.rs

@@ -16,9 +16,10 @@
 
 //! URL Endpoint traits
 
-use hyper::{self, server, net};
 use std::collections::BTreeMap;
 
+use hyper::{self, server, net};
+
 #[derive(Debug, PartialEq, Default, Clone)]
 pub struct EndpointPath {
 	pub app_id: String,

dapps/src/handlers/auth.rs

@@ -1,44 +0,0 @@
-// Copyright 2015-2017 Parity Technologies (UK) Ltd.
-// This file is part of Parity.
-
-// Parity is free software: you can redistribute it and/or modify
-// it under the terms of the GNU General Public License as published by
-// the Free Software Foundation, either version 3 of the License, or
-// (at your option) any later version.
-
-// Parity is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU General Public License for more details.
-
-// You should have received a copy of the GNU General Public License
-// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
-
-//! Authorization Handlers
-
-use hyper::{server, Decoder, Encoder, Next};
-use hyper::net::HttpStream;
-use hyper::status::StatusCode;
-
-pub struct AuthRequiredHandler;
-
-impl server::Handler<HttpStream> for AuthRequiredHandler {
-	fn on_request(&mut self, _request: server::Request<HttpStream>) -> Next {
-		Next::write()
-	}
-
-	fn on_request_readable(&mut self, _decoder: &mut Decoder<HttpStream>) -> Next {
-		Next::write()
-	}
-
-	fn on_response(&mut self, res: &mut server::Response) -> Next {
-		res.set_status(StatusCode::Unauthorized);
-		res.headers_mut().set_raw("WWW-Authenticate", vec![b"Basic realm=\"Parity\"".to_vec()]);
-		Next::write()
-	}
-
-	fn on_response_writable(&mut self, _encoder: &mut Encoder<HttpStream>) -> Next {
-		Next::end()
-	}
-}
-

dapps/src/handlers/mod.rs

@@ -16,14 +16,12 @@
 
 //! Hyper handlers implementations.
 
-mod auth;
 mod content;
 mod echo;
 mod fetch;
 mod redirect;
 mod streaming;
 
-pub use self::auth::AuthRequiredHandler;
 pub use self::content::ContentHandler;
 pub use self::echo::EchoHandler;
 pub use self::fetch::{ContentFetcherHandler, ContentValidator, FetchControl, ValidatorResponse};

dapps/src/lib.rs

@@ -34,9 +34,7 @@ extern crate zip;
 
 extern crate jsonrpc_core;
 extern crate jsonrpc_http_server;
-extern crate jsonrpc_server_utils;
 
-extern crate ethcore_rpc;
 extern crate ethcore_util as util;
 extern crate fetch;
 extern crate parity_dapps_glue as parity_dapps;
@@ -61,7 +59,6 @@ mod apps;
 mod page;
 mod router;
 mod handlers;
-mod rpc;
 mod api;
 mod proxypac;
 mod url;
@@ -69,23 +66,16 @@ mod web;
 #[cfg(test)]
 mod tests;
 
-use std::path::{Path, PathBuf};
+use std::path::PathBuf;
 use std::sync::Arc;
-use std::net::SocketAddr;
 use std::collections::HashMap;
 
-use jsonrpc_core::{Middleware, MetaIoHandler};
+use jsonrpc_http_server::{self as http, hyper, AccessControlAllowOrigin};
-use jsonrpc_http_server::tokio_core::reactor::Remote as TokioRemote;
-pub use jsonrpc_http_server::{DomainsValidation, Host, AccessControlAllowOrigin};
-pub use jsonrpc_http_server::hyper;
 
-use ethcore_rpc::Metadata;
+use fetch::Fetch;
-use fetch::{Fetch, Client as FetchClient};
-use hash_fetch::urlhint::ContractClient;
 use parity_reactor::Remote;
-use router::auth::{Authorization, NoAuth, HttpBasicAuth};
 
-use self::apps::{HOME_PAGE, DAPPS_DOMAIN};
+pub use hash_fetch::urlhint::ContractClient;
 
 /// Indicates sync status
 pub trait SyncStatus: Send + Sync {
@@ -107,173 +97,76 @@ impl<F> WebProxyTokens for F where F: Fn(String) -> bool + Send + Sync {
 	fn is_web_proxy_token_valid(&self, token: &str) -> bool { self(token.to_owned()) }
 }
 
-/// Webapps HTTP+RPC server build.
+/// Dapps server as `jsonrpc-http-server` request middleware.
-pub struct ServerBuilder<T: Fetch = FetchClient> {
+pub struct Middleware<F: Fetch + Clone> {
+	router: router::Router<apps::fetcher::ContentFetcher<F>>,
+}
+
+impl<F: Fetch + Clone> Middleware<F> {
+	/// Creates new Dapps server middleware.
+	pub fn new(
+		remote: Remote,
+		signer_address: Option<(String, u16)>,
 		dapps_path: PathBuf,
 		extra_dapps: Vec<PathBuf>,
 		registrar: Arc<ContractClient>,
 		sync_status: Arc<SyncStatus>,
 		web_proxy_tokens: Arc<WebProxyTokens>,
-	signer_address: Option<(String, u16)>,
+		fetch: F,
-	allowed_hosts: Option<Vec<Host>>,
+	) -> Self {
-	extra_cors: Option<Vec<AccessControlAllowOrigin>>,
+		let content_fetcher = apps::fetcher::ContentFetcher::new(
-	remote: Remote,
+			hash_fetch::urlhint::URLHintContract::new(registrar),
-	fetch: Option<T>,
+			sync_status,
-}
+			signer_address.clone(),
+			remote.clone(),
+			fetch.clone(),
+		);
+		let endpoints = apps::all_endpoints(
+			dapps_path,
+			extra_dapps,
+			signer_address.clone(),
+			web_proxy_tokens,
+			remote.clone(),
+			fetch.clone(),
+		);
 
-impl ServerBuilder {
+		let cors_domains = cors_domains(signer_address.clone());
-	/// Construct new dapps server
+
-	pub fn new<P: AsRef<Path>>(dapps_path: P, registrar: Arc<ContractClient>, remote: Remote) -> Self {
+		let special = {
-		ServerBuilder {
+			let mut special = HashMap::new();
-			dapps_path: dapps_path.as_ref().to_owned(),
+			special.insert(router::SpecialEndpoint::Rpc, None);
-			extra_dapps: vec![],
+			special.insert(router::SpecialEndpoint::Utils, Some(apps::utils()));
-			registrar: registrar,
+			special.insert(
-			sync_status: Arc::new(|| false),
+				router::SpecialEndpoint::Api,
-			web_proxy_tokens: Arc::new(|_| false),
+				Some(api::RestApi::new(cors_domains.clone(), &endpoints, content_fetcher.clone())),
-			signer_address: None,
+			);
-			allowed_hosts: Some(vec![]),
+			special
-			extra_cors: None,
+		};
-			remote: remote,
+
-			fetch: None,
+		let router = router::Router::new(
+			signer_address,
+			content_fetcher,
+			endpoints,
+			special,
+		);
+
+		Middleware {
+			router: router,
 		}
 	}
 }
 
-impl<T: Fetch> ServerBuilder<T> {
+impl<F: Fetch + Clone> http::RequestMiddleware for Middleware<F> {
-	/// Set a fetch client to use.
+	fn on_request(&self, req: &hyper::server::Request<hyper::net::HttpStream>, control: &hyper::Control) -> http::RequestMiddlewareAction {
-	pub fn fetch<X: Fetch>(self, fetch: X) -> ServerBuilder<X> {
+		self.router.on_request(req, control)
-		ServerBuilder {
-			dapps_path: self.dapps_path,
-			extra_dapps: vec![],
-			registrar: self.registrar,
-			sync_status: self.sync_status,
-			web_proxy_tokens: self.web_proxy_tokens,
-			signer_address: self.signer_address,
-			allowed_hosts: self.allowed_hosts,
-			extra_cors: self.extra_cors,
-			remote: self.remote,
-			fetch: Some(fetch),
-		}
-	}
-
-	/// Change default sync status.
-	pub fn sync_status(mut self, status: Arc<SyncStatus>) -> Self {
-		self.sync_status = status;
-		self
-	}
-
-	/// Change default web proxy tokens validator.
-	pub fn web_proxy_tokens(mut self, tokens: Arc<WebProxyTokens>) -> Self {
-		self.web_proxy_tokens = tokens;
-		self
-	}
-
-	/// Change default signer port.
-	pub fn signer_address(mut self, signer_address: Option<(String, u16)>) -> Self {
-		self.signer_address = signer_address;
-		self
-	}
-
-	/// Change allowed hosts.
-	/// `None` - All hosts are allowed
-	/// `Some(whitelist)` - Allow only whitelisted hosts (+ listen address)
-	pub fn allowed_hosts(mut self, allowed_hosts: DomainsValidation<Host>) -> Self {
-		self.allowed_hosts = allowed_hosts.into();
-		self
-	}
-
-	/// Extra cors headers.
-	/// `None` - no additional CORS URLs
-	pub fn extra_cors_headers(mut self, cors: DomainsValidation<AccessControlAllowOrigin>) -> Self {
-		self.extra_cors = cors.into();
-		self
-	}
-
-	/// Change extra dapps paths (apart from `dapps_path`)
-	pub fn extra_dapps<P: AsRef<Path>>(mut self, extra_dapps: &[P]) -> Self {
-		self.extra_dapps = extra_dapps.iter().map(|p| p.as_ref().to_owned()).collect();
-		self
-	}
-
-	/// Asynchronously start server with no authentication,
-	/// returns result with `Server` handle on success or an error.
-	pub fn start_unsecured_http<S: Middleware<Metadata>>(self, addr: &SocketAddr, handler: MetaIoHandler<Metadata, S>, tokio_remote: TokioRemote) -> Result<Server, ServerError> {
-		let fetch = self.fetch_client()?;
-		Server::start_http(
-			addr,
-			self.allowed_hosts,
-			self.extra_cors,
-			NoAuth,
-			handler,
-			self.dapps_path,
-			self.extra_dapps,
-			self.signer_address,
-			self.registrar,
-			self.sync_status,
-			self.web_proxy_tokens,
-			self.remote,
-			tokio_remote,
-			fetch,
-		)
-	}
-
-	/// Asynchronously start server with `HTTP Basic Authentication`,
-	/// return result with `Server` handle on success or an error.
-	pub fn start_basic_auth_http<S: Middleware<Metadata>>(self, addr: &SocketAddr, username: &str, password: &str, handler: MetaIoHandler<Metadata, S>, tokio_remote: TokioRemote) -> Result<Server, ServerError> {
-		let fetch = self.fetch_client()?;
-		Server::start_http(
-			addr,
-			self.allowed_hosts,
-			self.extra_cors,
-			HttpBasicAuth::single_user(username, password),
-			handler,
-			self.dapps_path,
-			self.extra_dapps,
-			self.signer_address,
-			self.registrar,
-			self.sync_status,
-			self.web_proxy_tokens,
-			self.remote,
-			tokio_remote,
-			fetch,
-		)
-	}
-
-	fn fetch_client(&self) -> Result<T, ServerError> {
-		match self.fetch.clone() {
-			Some(fetch) => Ok(fetch),
-			None => T::new().map_err(|_| ServerError::FetchInitialization),
-		}
 	}
 }
 
-/// Webapps HTTP server.
+/// Returns a list of CORS domains for API endpoint.
-pub struct Server {
+fn cors_domains(signer_address: Option<(String, u16)>) -> Vec<AccessControlAllowOrigin> {
-	server: Option<hyper::server::Listening>,
+	use self::apps::{HOME_PAGE, DAPPS_DOMAIN};
-}
 
-impl Server {
+	match signer_address {
-	/// Returns a list of allowed hosts or `None` if all hosts are allowed.
-	fn allowed_hosts(hosts: Option<Vec<Host>>, bind_address: String) -> Option<Vec<Host>> {
-		let mut allowed = Vec::new();
-
-		match hosts {
-			Some(hosts) => allowed.extend_from_slice(&hosts),
-			None => return None,
-		}
-
-		// Add localhost domain as valid too if listening on loopback interface.
-		allowed.push(bind_address.replace("127.0.0.1", "localhost").into());
-		allowed.push(bind_address.into());
-		Some(allowed)
-	}
-
-	/// Returns a list of CORS domains for API endpoint.
-	fn cors_domains(
-		signer_address: Option<(String, u16)>,
-		extra_cors: Option<Vec<AccessControlAllowOrigin>>,
-	) -> Vec<AccessControlAllowOrigin> {
-		let basic_cors = match signer_address {
 		Some(signer_address) => [
 			format!("http://{}{}", HOME_PAGE, DAPPS_DOMAIN),
 			format!("http://{}{}:{}", HOME_PAGE, DAPPS_DOMAIN, signer_address.1),
@@ -283,118 +176,11 @@ impl Server {
 			format!("https://{}", address(&signer_address)),
 		].into_iter().map(|val| AccessControlAllowOrigin::Value(val.into())).collect(),
 		None => vec![],
-		};
-
-		match extra_cors {
-			None => basic_cors,
-			Some(extra_cors) => basic_cors.into_iter().chain(extra_cors).collect(),
-		}
-	}
-
-	fn start_http<A: Authorization + 'static, F: Fetch, T: Middleware<Metadata>>(
-		addr: &SocketAddr,
-		hosts: Option<Vec<Host>>,
-		extra_cors: Option<Vec<AccessControlAllowOrigin>>,
-		authorization: A,
-		handler: MetaIoHandler<Metadata, T>,
-		dapps_path: PathBuf,
-		extra_dapps: Vec<PathBuf>,
-		signer_address: Option<(String, u16)>,
-		registrar: Arc<ContractClient>,
-		sync_status: Arc<SyncStatus>,
-		web_proxy_tokens: Arc<WebProxyTokens>,
-		remote: Remote,
-		tokio_remote: TokioRemote,
-		fetch: F,
-	) -> Result<Server, ServerError> {
-		let authorization = Arc::new(authorization);
-		let content_fetcher = Arc::new(apps::fetcher::ContentFetcher::new(
-			hash_fetch::urlhint::URLHintContract::new(registrar),
-			sync_status,
-			signer_address.clone(),
-			remote.clone(),
-			fetch.clone(),
-		));
-		let endpoints = Arc::new(apps::all_endpoints(
-			dapps_path,
-			extra_dapps,
-			signer_address.clone(),
-			web_proxy_tokens,
-			remote.clone(),
-			fetch.clone(),
-		));
-		let cors_domains = Self::cors_domains(signer_address.clone(), extra_cors);
-
-		let special = Arc::new({
-			let mut special = HashMap::new();
-			special.insert(router::SpecialEndpoint::Rpc, rpc::rpc(handler, tokio_remote, cors_domains.clone()));
-			special.insert(router::SpecialEndpoint::Utils, apps::utils());
-			special.insert(
-				router::SpecialEndpoint::Api,
-				api::RestApi::new(cors_domains, endpoints.clone(), content_fetcher.clone())
-			);
-			special
-		});
-		let hosts = Self::allowed_hosts(hosts, format!("{}", addr));
-
-		hyper::Server::http(addr)?
-			.handle(move |ctrl| router::Router::new(
-				ctrl,
-				signer_address.clone(),
-				content_fetcher.clone(),
-				endpoints.clone(),
-				special.clone(),
-				authorization.clone(),
-				hosts.clone(),
-			))
-			.map(|(l, srv)| {
-
-				::std::thread::spawn(move || {
-					srv.run();
-				});
-
-				Server {
-					server: Some(l),
-				}
-			})
-			.map_err(ServerError::from)
-	}
-
-	#[cfg(test)]
-	/// Returns address that this server is bound to.
-	pub fn addr(&self) -> &SocketAddr {
-		self.server.as_ref()
-			.expect("server is always Some at the start; it's consumed only when object is dropped; qed")
-			.addrs()
-			.first()
-			.expect("You cannot start the server without binding to at least one address; qed")
 	}
 }
 
-impl Drop for Server {
+fn address(address: &(String, u16)) -> String {
-	fn drop(&mut self) {
+	format!("{}:{}", address.0, address.1)
-		self.server.take().unwrap().close()
-	}
-}
-
-/// Webapp Server startup error
-#[derive(Debug)]
-pub enum ServerError {
-	/// Wrapped `std::io::Error`
-	IoError(std::io::Error),
-	/// Other `hyper` error
-	Other(hyper::error::Error),
-	/// Fetch service initialization error
-	FetchInitialization,
-}
-
-impl From<hyper::error::Error> for ServerError {
-	fn from(err: hyper::error::Error) -> Self {
-		match err {
-			hyper::error::Error::Io(e) => ServerError::IoError(e),
-			e => ServerError::Other(e),
-		}
-	}
 }
 
 /// Random filename
@@ -404,39 +190,18 @@ fn random_filename() -> String {
 	rng.gen_ascii_chars().take(12).collect()
 }
 
-fn address(address: &(String, u16)) -> String {
-	format!("{}:{}", address.0, address.1)
-}
-
 #[cfg(test)]
 mod util_tests {
-	use super::Server;
+	use super::cors_domains;
 	use jsonrpc_http_server::AccessControlAllowOrigin;
 
-	#[test]
-	fn should_return_allowed_hosts() {
-		// given
-		let bind_address = "127.0.0.1".to_owned();
-
-		// when
-		let all = Server::allowed_hosts(None, bind_address.clone());
-		let address = Server::allowed_hosts(Some(Vec::new()), bind_address.clone());
-		let some = Server::allowed_hosts(Some(vec!["ethcore.io".into()]), bind_address.clone());
-
-		// then
-		assert_eq!(all, None);
-		assert_eq!(address, Some(vec!["localhost".into(), "127.0.0.1".into()]));
-		assert_eq!(some, Some(vec!["ethcore.io".into(), "localhost".into(), "127.0.0.1".into()]));
-	}
-
 	#[test]
 	fn should_return_cors_domains() {
 		// given
 
 		// when
-		let none = Server::cors_domains(None, None);
+		let none = cors_domains(None);
-		let some = Server::cors_domains(Some(("127.0.0.1".into(), 18180)), None);
+		let some = cors_domains(Some(("127.0.0.1".into(), 18180)));
-		let extra = Server::cors_domains(None, Some(vec!["all".into()]));
 
 		// then
 		assert_eq!(none, Vec::<AccessControlAllowOrigin>::new());
@@ -448,6 +213,5 @@ mod util_tests {
 			"https://parity.web3.site:18180".into(),
 			"https://127.0.0.1:18180".into(),
 		]);
-		assert_eq!(extra, vec![AccessControlAllowOrigin::Any]);
 	}
 }

dapps/src/router.rs

@@ -15,24 +15,20 @@
 // along with Parity.  If not, see <http://www.gnu.org/licenses/>.
 
 //! Router implementation
-//! Processes request handling authorization and dispatching it to proper application.
+//! Dispatch requests to proper application.
-
-pub mod auth;
-mod host_validation;
 
 use address;
 use std::cmp;
-use std::sync::Arc;
 use std::collections::HashMap;
 
 use url::{Url, Host};
-use hyper::{self, server, header, Next, Encoder, Decoder, Control, StatusCode};
+use hyper::{self, server, header, Control, StatusCode};
 use hyper::net::HttpStream;
-use jsonrpc_server_utils::hosts;
+use jsonrpc_http_server as http;
 
 use apps::{self, DAPPS_DOMAIN};
 use apps::fetcher::Fetcher;
-use endpoint::{Endpoint, Endpoints, EndpointPath};
+use endpoint::{Endpoint, Endpoints, EndpointPath, Handler};
 use handlers::{self, Redirection, ContentHandler};
 
 /// Special endpoints are accessible on every domain (every dapp)
@@ -44,51 +40,29 @@ pub enum SpecialEndpoint {
 	None,
 }
 
-pub struct Router<A: auth::Authorization + 'static> {
+pub struct Router<F> {
-	control: Option<Control>,
 	signer_address: Option<(String, u16)>,
-	endpoints: Arc<Endpoints>,
+	endpoints: Endpoints,
-	fetch: Arc<Fetcher>,
+	fetch: F,
-	special: Arc<HashMap<SpecialEndpoint, Box<Endpoint>>>,
+	special: HashMap<SpecialEndpoint, Option<Box<Endpoint>>>,
-	authorization: Arc<A>,
-	allowed_hosts: Option<Vec<hosts::Host>>,
-	handler: Box<server::Handler<HttpStream> + Send>,
 }
 
-impl<A: auth::Authorization + 'static> server::Handler<HttpStream> for Router<A> {
+impl<F: Fetcher + 'static> http::RequestMiddleware for Router<F> {
-
+	fn on_request(&self, req: &server::Request<HttpStream>, control: &Control) -> http::RequestMiddlewareAction {
-	fn on_request(&mut self, req: server::Request<HttpStream>) -> Next {
 		// Choose proper handler depending on path / domain
-		let url = handlers::extract_url(&req);
+		let url = handlers::extract_url(req);
 		let endpoint = extract_endpoint(&url);
-		let referer = extract_referer_endpoint(&req);
+		let referer = extract_referer_endpoint(req);
 		let is_utils = endpoint.1 == SpecialEndpoint::Utils;
+		let is_dapps_domain = endpoint.0.as_ref().map(|endpoint| endpoint.using_dapps_domains).unwrap_or(false);
+		let is_origin_set = req.headers().get::<http::hyper::header::Origin>().is_some();
 		let is_get_request = *req.method() == hyper::Method::Get;
 
 		trace!(target: "dapps", "Routing request to {:?}. Details: {:?}", url, req);
 
-		// Validate Host header
+		let control = control.clone();
-		trace!(target: "dapps", "Validating host headers against: {:?}", self.allowed_hosts);
-		let is_valid = is_utils || host_validation::is_valid(&req, &self.allowed_hosts);
-		if !is_valid {
-			debug!(target: "dapps", "Rejecting invalid host header.");
-			self.handler = host_validation::host_invalid_response();
-			return self.handler.on_request(req);
-		}
-
-		trace!(target: "dapps", "Checking authorization.");
-		// Check authorization
-		let auth = self.authorization.is_authorized(&req);
-		if let auth::Authorized::No(handler) = auth {
-			debug!(target: "dapps", "Authorization denied.");
-			self.handler = handler;
-			return self.handler.on_request(req);
-		}
-
-
-		let control = self.control.take().expect("on_request is called only once; control is always defined at start; qed");
 		debug!(target: "dapps", "Handling endpoint request: {:?}", endpoint);
-		self.handler = match (endpoint.0, endpoint.1, referer) {
+		let handler: Option<Box<Handler>> = match (endpoint.0, endpoint.1, referer) {
 			// Handle invalid web requests that we can recover from
 			(ref path, SpecialEndpoint::None, Some((ref referer, ref referer_url)))
 				if referer.app_id == apps::WEB_PATH
@@ -100,26 +74,27 @@ impl<A: auth::Authorization + 'static> server::Handler<HttpStream> for Router<A>
 				let len = cmp::min(referer_url.path.len(), 2); // /web/<encoded>/
 				let base = referer_url.path[..len].join("/");
 				let requested = url.map(|u| u.path.join("/")).unwrap_or_default();
-				Redirection::boxed(&format!("/{}/{}", base, requested))
+				Some(Redirection::boxed(&format!("/{}/{}", base, requested)))
 			},
 			// First check special endpoints
 			(ref path, ref endpoint, _) if self.special.contains_key(endpoint) => {
 				trace!(target: "dapps", "Resolving to special endpoint.");
 				self.special.get(endpoint)
 					.expect("special known to contain key; qed")
-					.to_async_handler(path.clone().unwrap_or_default(), control)
+					.as_ref()
+					.map(|special| special.to_async_handler(path.clone().unwrap_or_default(), control))
 			},
 			// Then delegate to dapp
 			(Some(ref path), _, _) if self.endpoints.contains_key(&path.app_id) => {
 				trace!(target: "dapps", "Resolving to local/builtin dapp.");
-				self.endpoints.get(&path.app_id)
+				Some(self.endpoints.get(&path.app_id)
 					.expect("endpoints known to contain key; qed")
-					.to_async_handler(path.clone(), control)
+					.to_async_handler(path.clone(), control))
 			},
 			// Try to resolve and fetch the dapp
 			(Some(ref path), _, _) if self.fetch.contains(&path.app_id) => {
 				trace!(target: "dapps", "Resolving to fetchable content.");
-				self.fetch.to_async_handler(path.clone(), control)
+				Some(self.fetch.to_async_handler(path.clone(), control))
 			},
 			// NOTE [todr] /home is redirected to home page since some users may have the redirection cached
 			// (in the past we used 301 instead of 302)
@@ -128,82 +103,61 @@ impl<A: auth::Authorization + 'static> server::Handler<HttpStream> for Router<A>
 			// 404 for non-existent content
 			(Some(ref path), _, _) if is_get_request && path.app_id != "home" => {
 				trace!(target: "dapps", "Resolving to 404.");
-				Box::new(ContentHandler::error(
+				Some(Box::new(ContentHandler::error(
 					StatusCode::NotFound,
 					"404 Not Found",
 					"Requested content was not found.",
 					None,
 					self.signer_address.clone(),
-				))
+				)))
 			},
 			// Redirect any other GET request to signer.
 			_ if is_get_request => {
 				if let Some(ref signer_address) = self.signer_address {
 					trace!(target: "dapps", "Redirecting to signer interface.");
-					Redirection::boxed(&format!("http://{}", address(signer_address)))
+					Some(Redirection::boxed(&format!("http://{}", address(signer_address))))
 				} else {
 					trace!(target: "dapps", "Signer disabled, returning 404.");
-					Box::new(ContentHandler::error(
+					Some(Box::new(ContentHandler::error(
 						StatusCode::NotFound,
 						"404 Not Found",
 						"Your homepage is not available when Trusted Signer is disabled.",
 						Some("You can still access dapps by writing a correct address, though. Re-enable Signer to get your homepage back."),
 						self.signer_address.clone(),
-					))
+					)))
 				}
 			},
 			// RPC by default
 			_ => {
 				trace!(target: "dapps", "Resolving to RPC call.");
-				self.special.get(&SpecialEndpoint::Rpc)
+				None
-					.expect("RPC endpoint always stored; qed")
-					.to_async_handler(EndpointPath::default(), control)
 			}
 		};
 
-		// Delegate on_request to proper handler
+		match handler {
-		self.handler.on_request(req)
+			Some(handler) => http::RequestMiddlewareAction::Respond {
+				should_validate_hosts: !(is_utils || is_dapps_domain),
+				handler: handler,
+			},
+			None => http::RequestMiddlewareAction::Proceed {
+				should_continue_on_invalid_cors: !is_origin_set,
+			},
 		}
-
-	/// This event occurs each time the `Request` is ready to be read from.
-	fn on_request_readable(&mut self, decoder: &mut Decoder<HttpStream>) -> Next {
-		self.handler.on_request_readable(decoder)
-	}
-
-	/// This event occurs after the first time this handled signals `Next::write()`.
-	fn on_response(&mut self, response: &mut server::Response) -> Next {
-		self.handler.on_response(response)
-	}
-
-	/// This event occurs each time the `Response` is ready to be written to.
-	fn on_response_writable(&mut self, encoder: &mut Encoder<HttpStream>) -> Next {
-		self.handler.on_response_writable(encoder)
 	}
 }
 
-impl<A: auth::Authorization> Router<A> {
+impl<F> Router<F> {
 	pub fn new(
-		control: Control,
 		signer_address: Option<(String, u16)>,
-		content_fetcher: Arc<Fetcher>,
+		content_fetcher: F,
-		endpoints: Arc<Endpoints>,
+		endpoints: Endpoints,
-		special: Arc<HashMap<SpecialEndpoint, Box<Endpoint>>>,
+		special: HashMap<SpecialEndpoint, Option<Box<Endpoint>>>,
-		authorization: Arc<A>,
-		allowed_hosts: Option<Vec<hosts::Host>>,
 	) -> Self {
-
-		let handler = special.get(&SpecialEndpoint::Utils)
-			.expect("Utils endpoint always stored; qed")
-			.to_handler(EndpointPath::default());
 		Router {
-			control: Some(control),
 			signer_address: signer_address,
 			endpoints: endpoints,
 			fetch: content_fetcher,
 			special: special,
-			authorization: authorization,
-			allowed_hosts: allowed_hosts,
-			handler: handler,
 		}
 	}
 }

dapps/src/router/auth.rs

@@ -1,106 +0,0 @@
-// Copyright 2015-2017 Parity Technologies (UK) Ltd.
-// This file is part of Parity.
-
-// Parity is free software: you can redistribute it and/or modify
-// it under the terms of the GNU General Public License as published by
-// the Free Software Foundation, either version 3 of the License, or
-// (at your option) any later version.
-
-// Parity is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU General Public License for more details.
-
-// You should have received a copy of the GNU General Public License
-// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
-
-//! HTTP Authorization implementations
-
-use std::collections::HashMap;
-use hyper::{server, net, header, status};
-use endpoint::Handler;
-use handlers::{AuthRequiredHandler, ContentHandler};
-
-/// Authorization result
-pub enum Authorized {
-	/// Authorization was successful.
-	Yes,
-	/// Unsuccessful authorization. Handler for further work is returned.
-	No(Box<Handler>),
-}
-
-/// Authorization interface
-pub trait Authorization : Send + Sync {
-	/// Checks if authorization is valid.
-	fn is_authorized(&self, req: &server::Request<net::HttpStream>)-> Authorized;
-}
-
-/// HTTP Basic Authorization handler
-pub struct HttpBasicAuth {
-	users: HashMap<String, String>,
-}
-
-/// No-authorization implementation (authorization disabled)
-pub struct NoAuth;
-
-impl Authorization for NoAuth {
-	fn is_authorized(&self, _req: &server::Request<net::HttpStream>)-> Authorized {
-		Authorized::Yes
-	}
-}
-
-impl Authorization for HttpBasicAuth {
-	fn is_authorized(&self, req: &server::Request<net::HttpStream>) -> Authorized {
-		let auth = self.check_auth(&req);
-
-		match auth {
-			Access::Denied => {
-				Authorized::No(Box::new(ContentHandler::error(
-					status::StatusCode::Unauthorized,
-					"Unauthorized",
-					"You need to provide valid credentials to access this page.",
-					None,
-					None,
-				)))
-			},
-			Access::AuthRequired => {
-				Authorized::No(Box::new(AuthRequiredHandler))
-			},
-			Access::Granted => {
-				Authorized::Yes
-			},
-		}
-	}
-}
-
-#[derive(Debug)]
-enum Access {
-	Granted,
-	Denied,
-	AuthRequired,
-}
-
-impl HttpBasicAuth {
-	/// Creates `HttpBasicAuth` instance with only one user.
-	pub fn single_user(username: &str, password: &str) -> Self {
-		let mut users = HashMap::new();
-		users.insert(username.to_owned(), password.to_owned());
-		HttpBasicAuth {
-			users: users
-		}
-	}
-
-	fn is_authorized(&self, username: &str, password: &str) -> bool {
-		self.users.get(&username.to_owned()).map_or(false, |pass| pass == password)
-	}
-
-	fn check_auth(&self, req: &server::Request<net::HttpStream>) -> Access {
-		match req.headers().get::<header::Authorization<header::Basic>>() {
-			Some(&header::Authorization(
-				header::Basic { ref username, password: Some(ref password) }
-			)) if self.is_authorized(username, password) => Access::Granted,
-			Some(_) => Access::Denied,
-			None => Access::AuthRequired,
-		}
-	}
-}

dapps/src/router/host_validation.rs

@@ -1,42 +0,0 @@
-// Copyright 2015-2017 Parity Technologies (UK) Ltd.
-// This file is part of Parity.
-
-// Parity is free software: you can redistribute it and/or modify
-// it under the terms of the GNU General Public License as published by
-// the Free Software Foundation, either version 3 of the License, or
-// (at your option) any later version.
-
-// Parity is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU General Public License for more details.
-
-// You should have received a copy of the GNU General Public License
-// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
-
-
-use apps::DAPPS_DOMAIN;
-use hyper::{server, header, StatusCode};
-use hyper::net::HttpStream;
-
-use handlers::ContentHandler;
-use jsonrpc_http_server;
-use jsonrpc_server_utils::hosts;
-
-pub fn is_valid(req: &server::Request<HttpStream>, allowed_hosts: &Option<Vec<hosts::Host>>) -> bool {
-	let header_valid = jsonrpc_http_server::is_host_allowed(req, allowed_hosts);
-	match (header_valid, req.headers().get::<header::Host>()) {
-		(true, _) => true,
-		(_, Some(host)) => host.hostname.ends_with(DAPPS_DOMAIN),
-		_ => false,
-	}
-}
-
-pub fn host_invalid_response() -> Box<server::Handler<HttpStream> + Send> {
-	Box::new(ContentHandler::error(StatusCode::Forbidden,
-		"Current Host Is Disallowed",
-		"You are trying to access your node using incorrect address.",
-		Some("Use allowed URL or specify different <code>hosts</code> CLI options."),
-		None,
-	))
-}

dapps/src/rpc.rs

@@ -66,14 +66,14 @@ impl<T: Middleware<Metadata>> Endpoint for RpcEndpoint<T> {
 #[derive(Default)]
 struct NoopMiddleware;
 impl http::RequestMiddleware for NoopMiddleware {
-	fn on_request(&self, request: &http::hyper::server::Request<http::hyper::net::HttpStream>) -> http::RequestMiddlewareAction {
+	fn on_request(&self, request: &http::hyper::server::Request<http::hyper::net::HttpStream>, _control: &http::hyper::Control) -> http::RequestMiddlewareAction {
 		http::RequestMiddlewareAction::Proceed {
 			should_continue_on_invalid_cors: request.headers().get::<http::hyper::header::Origin>().is_none(),
 		}
 	}
 }
 
-struct MetadataExtractor;
+pub struct MetadataExtractor;
 impl HttpMetaExtractor<Metadata> for MetadataExtractor {
 	fn read_metadata(&self, request: &http::hyper::server::Request<http::hyper::net::HttpStream>) -> Metadata {
 		let dapp_id = request.headers().get::<http::hyper::header::Origin>()

dapps/src/tests/api.rs

@@ -14,7 +14,7 @@
 // You should have received a copy of the GNU General Public License
 // along with Parity.  If not, see <http://www.gnu.org/licenses/>.
 
-use tests::helpers::{serve, serve_with_registrar, serve_extra_cors, request, assert_security_headers};
+use tests::helpers::{serve, serve_with_registrar, request, assert_security_headers};
 
 #[test]
 fn should_return_error() {
@@ -195,26 +195,3 @@ fn should_return_signer_port_cors_headers_for_home_parity_with_port() {
 	response.assert_status("HTTP/1.1 200 OK");
 	response.assert_header("Access-Control-Allow-Origin", "http://parity.web3.site:18180");
 }
-
-#[test]
-fn should_return_extra_cors_headers() {
-	// given
-	let server = serve_extra_cors(Some(vec!["all".to_owned()]));
-
-	// when
-	let response = request(server,
-		"\
-			POST /api/ping HTTP/1.1\r\n\
-			Host: localhost:8080\r\n\
-			Origin: http://somedomain.io\r\n\
-			Connection: close\r\n\
-			\r\n\
-			{}
-		"
-	);
-
-	// then
-	response.assert_status("HTTP/1.1 200 OK");
-	response.assert_header("Access-Control-Allow-Origin", "http://somedomain.io");
-}
-

dapps/src/tests/authorization.rs

@@ -1,80 +0,0 @@
-// Copyright 2015-2017 Parity Technologies (UK) Ltd.
-// This file is part of Parity.
-
-// Parity is free software: you can redistribute it and/or modify
-// it under the terms of the GNU General Public License as published by
-// the Free Software Foundation, either version 3 of the License, or
-// (at your option) any later version.
-
-// Parity is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU General Public License for more details.
-
-// You should have received a copy of the GNU General Public License
-// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
-
-use tests::helpers::{serve_with_auth, request, assert_security_headers_for_embed};
-
-#[test]
-fn should_require_authorization() {
-	// given
-	let server = serve_with_auth("test", "test");
-
-	// when
-	let response = request(server,
-		"\
-			GET / HTTP/1.1\r\n\
-			Host: 127.0.0.1:8080\r\n\
-			Connection: close\r\n\
-			\r\n\
-		"
-	);
-
-	// then
-	assert_eq!(response.status, "HTTP/1.1 401 Unauthorized".to_owned());
-	assert_eq!(response.headers.get(0).unwrap(), "WWW-Authenticate: Basic realm=\"Parity\"");
-}
-
-#[test]
-fn should_reject_on_invalid_auth() {
-	// given
-	let server = serve_with_auth("test", "test");
-
-	// when
-	let response = request(server,
-		"\
-			GET / HTTP/1.1\r\n\
-			Host: 127.0.0.1:8080\r\n\
-			Connection: close\r\n\
-			Authorization: Basic QWxhZGRpbjpPcGVuU2VzYW1l\r\n
-			\r\n\
-		"
-	);
-
-	// then
-	assert_eq!(response.status, "HTTP/1.1 401 Unauthorized".to_owned());
-	assert!(response.body.contains("Unauthorized"), response.body);
-	assert_eq!(response.headers_raw.contains("WWW-Authenticate"), false);
-}
-
-#[test]
-fn should_allow_on_valid_auth() {
-	// given
-	let server = serve_with_auth("Aladdin", "OpenSesame");
-
-	// when
-	let response = request(server,
-		"\
-			GET /ui/ HTTP/1.1\r\n\
-			Host: 127.0.0.1:8080\r\n\
-			Connection: close\r\n\
-			Authorization: Basic QWxhZGRpbjpPcGVuU2VzYW1l\r\n
-			\r\n\
-		"
-	);
-
-	// then
-	assert_eq!(response.status, "HTTP/1.1 200 OK".to_owned());
-	assert_security_headers_for_embed(&response.headers);
-}

dapps/src/tests/helpers/mod.rs

@@ -16,18 +16,20 @@
 
 use std::env;
 use std::str;
-use std::ops::Deref;
+use std::net::SocketAddr;
+use std::path::{Path, PathBuf};
 use std::sync::Arc;
 use env_logger::LogBuilder;
-use ethcore_rpc::Metadata;
+use jsonrpc_core::IoHandler;
-use jsonrpc_core::MetaIoHandler;
+use jsonrpc_http_server::{self as http, Host, DomainsValidation};
 
-use ServerBuilder;
-use Server;
-use fetch::Fetch;
 use devtools::http_client;
+use hash_fetch::urlhint::ContractClient;
+use fetch::{Fetch, Client as FetchClient};
 use parity_reactor::{EventLoop, Remote};
 
+use {Middleware, SyncStatus, WebProxyTokens};
+
 mod registrar;
 mod fetch;
 
@@ -50,7 +52,7 @@ pub struct ServerLoop {
 	pub event_loop: EventLoop,
 }
 
-impl Deref for ServerLoop {
+impl ::std::ops::Deref for ServerLoop {
 	type Target = Server;
 
 	fn deref(&self) -> &Self::Target {
@@ -58,7 +60,7 @@ impl Deref for ServerLoop {
 	}
 }
 
-pub fn init_server<F, B>(process: F, io: MetaIoHandler<Metadata>, remote: Remote) -> (ServerLoop, Arc<FakeRegistrar>) where
+pub fn init_server<F, B>(process: F, io: IoHandler, remote: Remote) -> (ServerLoop, Arc<FakeRegistrar>) where
 	F: FnOnce(ServerBuilder) -> ServerBuilder<B>,
 	B: Fetch,
 {
@@ -74,33 +76,15 @@ pub fn init_server<F, B>(process: F, io: MetaIoHandler<Metadata>, remote: Remote
 		&dapps_path, registrar.clone(), remote,
 	))
 		.signer_address(Some(("127.0.0.1".into(), SIGNER_PORT)))
-		.start_unsecured_http(&"127.0.0.1:0".parse().unwrap(), io, event_loop.raw_remote()).unwrap();
+		.start_unsecured_http(&"127.0.0.1:0".parse().unwrap(), io).unwrap();
 	(
 		ServerLoop { server: server, event_loop: event_loop },
 		registrar,
 	)
 }
 
-pub fn serve_with_auth(user: &str, pass: &str) -> ServerLoop {
+pub fn serve_with_rpc(io: IoHandler) -> ServerLoop {
-	init_logger();
+	init_server(|builder| builder, io, Remote::new_sync()).0
-	let registrar = Arc::new(FakeRegistrar::new());
-	let mut dapps_path = env::temp_dir();
-	dapps_path.push("non-existent-dir-to-prevent-fs-files-from-loading");
-
-	let event_loop = EventLoop::spawn();
-	let io = MetaIoHandler::default();
-	let server = ServerBuilder::new(&dapps_path, registrar, event_loop.remote())
-		.signer_address(Some(("127.0.0.1".into(), SIGNER_PORT)))
-		.allowed_hosts(None.into())
-		.start_basic_auth_http(&"127.0.0.1:0".parse().unwrap(), user, pass, io, event_loop.raw_remote()).unwrap();
-	ServerLoop {
-		server: server,
-		event_loop: event_loop,
-	}
-}
-
-pub fn serve_with_rpc(io: MetaIoHandler<Metadata>) -> ServerLoop {
-	init_server(|builder| builder.allowed_hosts(None.into()), io, Remote::new_sync()).0
 }
 
 pub fn serve_hosts(hosts: Option<Vec<String>>) -> ServerLoop {
@@ -108,20 +92,13 @@ pub fn serve_hosts(hosts: Option<Vec<String>>) -> ServerLoop {
 	init_server(|builder| builder.allowed_hosts(hosts.into()), Default::default(), Remote::new_sync()).0
 }
 
-pub fn serve_extra_cors(extra_cors: Option<Vec<String>>) -> ServerLoop {
-	let extra_cors = extra_cors.map(|cors| cors.into_iter().map(Into::into).collect());
-	init_server(|builder| builder.allowed_hosts(None.into()).extra_cors_headers(extra_cors.into()), Default::default(), Remote::new_sync()).0
-}
-
 pub fn serve_with_registrar() -> (ServerLoop, Arc<FakeRegistrar>) {
-	init_server(|builder| builder.allowed_hosts(None.into()), Default::default(), Remote::new_sync())
+	init_server(|builder| builder, Default::default(), Remote::new_sync())
 }
 
 pub fn serve_with_registrar_and_sync() -> (ServerLoop, Arc<FakeRegistrar>) {
 	init_server(|builder| {
-		builder
+		builder.sync_status(Arc::new(|| true))
-			.sync_status(Arc::new(|| true))
-			.allowed_hosts(None.into())
 	}, Default::default(), Remote::new_sync())
 }
 
@@ -133,7 +110,7 @@ pub fn serve_with_registrar_and_fetch_and_threads(multi_threaded: bool) -> (Serv
 	let fetch = FakeFetch::default();
 	let f = fetch.clone();
 	let (server, reg) = init_server(move |builder| {
-		builder.allowed_hosts(None.into()).fetch(f.clone())
+		builder.fetch(f.clone())
 	}, Default::default(), if multi_threaded { Remote::new_thread_per_future() } else { Remote::new_sync() });
 
 	(server, fetch, reg)
@@ -144,7 +121,6 @@ pub fn serve_with_fetch(web_token: &'static str) -> (ServerLoop, FakeFetch) {
 	let f = fetch.clone();
 	let (server, _) = init_server(move |builder| {
 		builder
-			.allowed_hosts(None.into())
 			.fetch(f.clone())
 			.web_proxy_tokens(Arc::new(move |token| &token == web_token))
 	}, Default::default(), Remote::new_sync());
@@ -153,7 +129,7 @@ pub fn serve_with_fetch(web_token: &'static str) -> (ServerLoop, FakeFetch) {
 }
 
 pub fn serve() -> ServerLoop {
-	init_server(|builder| builder.allowed_hosts(None.into()), Default::default(), Remote::new_sync()).0
+	init_server(|builder| builder, Default::default(), Remote::new_sync()).0
 }
 
 pub fn request(server: ServerLoop, request: &str) -> http_client::Response {
@@ -166,3 +142,157 @@ pub fn assert_security_headers(headers: &[String]) {
 pub fn assert_security_headers_for_embed(headers: &[String]) {
 	http_client::assert_security_headers_present(headers, Some(SIGNER_PORT))
 }
+
+
+/// Webapps HTTP+RPC server build.
+pub struct ServerBuilder<T: Fetch = FetchClient> {
+	dapps_path: PathBuf,
+	registrar: Arc<ContractClient>,
+	sync_status: Arc<SyncStatus>,
+	web_proxy_tokens: Arc<WebProxyTokens>,
+	signer_address: Option<(String, u16)>,
+	allowed_hosts: DomainsValidation<Host>,
+	remote: Remote,
+	fetch: Option<T>,
+}
+
+impl ServerBuilder {
+	/// Construct new dapps server
+	pub fn new<P: AsRef<Path>>(dapps_path: P, registrar: Arc<ContractClient>, remote: Remote) -> Self {
+		ServerBuilder {
+			dapps_path: dapps_path.as_ref().to_owned(),
+			registrar: registrar,
+			sync_status: Arc::new(|| false),
+			web_proxy_tokens: Arc::new(|_| false),
+			signer_address: None,
+			allowed_hosts: DomainsValidation::Disabled,
+			remote: remote,
+			fetch: None,
+		}
+	}
+}
+
+impl<T: Fetch> ServerBuilder<T> {
+	/// Set a fetch client to use.
+	pub fn fetch<X: Fetch>(self, fetch: X) -> ServerBuilder<X> {
+		ServerBuilder {
+			dapps_path: self.dapps_path,
+			registrar: self.registrar,
+			sync_status: self.sync_status,
+			web_proxy_tokens: self.web_proxy_tokens,
+			signer_address: self.signer_address,
+			allowed_hosts: self.allowed_hosts,
+			remote: self.remote,
+			fetch: Some(fetch),
+		}
+	}
+
+	/// Change default sync status.
+	pub fn sync_status(mut self, status: Arc<SyncStatus>) -> Self {
+		self.sync_status = status;
+		self
+	}
+
+	/// Change default web proxy tokens validator.
+	pub fn web_proxy_tokens(mut self, tokens: Arc<WebProxyTokens>) -> Self {
+		self.web_proxy_tokens = tokens;
+		self
+	}
+
+	/// Change default signer port.
+	pub fn signer_address(mut self, signer_address: Option<(String, u16)>) -> Self {
+		self.signer_address = signer_address;
+		self
+	}
+
+	/// Change allowed hosts.
+	/// `None` - All hosts are allowed
+	/// `Some(whitelist)` - Allow only whitelisted hosts (+ listen address)
+	pub fn allowed_hosts(mut self, allowed_hosts: DomainsValidation<Host>) -> Self {
+		self.allowed_hosts = allowed_hosts;
+		self
+	}
+
+	/// Asynchronously start server with no authentication,
+	/// returns result with `Server` handle on success or an error.
+	pub fn start_unsecured_http(self, addr: &SocketAddr, io: IoHandler) -> Result<Server, http::Error> {
+		let fetch = self.fetch_client();
+		Server::start_http(
+			addr,
+			io,
+			self.allowed_hosts,
+			self.signer_address,
+			self.dapps_path,
+			vec![],
+			self.registrar,
+			self.sync_status,
+			self.web_proxy_tokens,
+			self.remote,
+			fetch,
+		)
+	}
+
+	fn fetch_client(&self) -> T {
+		match self.fetch.clone() {
+			Some(fetch) => fetch,
+			None => T::new().unwrap(),
+		}
+	}
+}
+
+
+/// Webapps HTTP server.
+pub struct Server {
+	server: Option<http::Server>,
+}
+
+impl Server {
+	fn start_http<F: Fetch>(
+		addr: &SocketAddr,
+		io: IoHandler,
+		allowed_hosts: DomainsValidation<Host>,
+		signer_address: Option<(String, u16)>,
+		dapps_path: PathBuf,
+		extra_dapps: Vec<PathBuf>,
+		registrar: Arc<ContractClient>,
+		sync_status: Arc<SyncStatus>,
+		web_proxy_tokens: Arc<WebProxyTokens>,
+		remote: Remote,
+		fetch: F,
+	) -> Result<Server, http::Error> {
+		let middleware = Middleware::new(
+			remote,
+			signer_address,
+			dapps_path,
+			extra_dapps,
+			registrar,
+			sync_status,
+			web_proxy_tokens,
+			fetch,
+		);
+		http::ServerBuilder::new(io)
+			.request_middleware(middleware)
+			.allowed_hosts(allowed_hosts)
+			.cors(http::DomainsValidation::Disabled)
+			.start_http(addr)
+			.map(|server| Server {
+				server: Some(server),
+			})
+	}
+
+	/// Returns address that this server is bound to.
+	pub fn addr(&self) -> &SocketAddr {
+		self.server.as_ref()
+			.expect("server is always Some at the start; it's consumed only when object is dropped; qed")
+			.addrs()
+			.first()
+			.expect("You cannot start the server without binding to at least one address; qed")
+	}
+}
+
+impl Drop for Server {
+	fn drop(&mut self) {
+		self.server.take().unwrap().close()
+	}
+}
+

dapps/src/tests/mod.rs

@@ -19,7 +19,6 @@
 mod helpers;
 
 mod api;
-mod authorization;
 mod fetch;
 mod redirection;
 mod rpc;

dapps/src/tests/rpc.rs

@@ -14,16 +14,14 @@
 // You should have received a copy of the GNU General Public License
 // along with Parity.  If not, see <http://www.gnu.org/licenses/>.
 
-use futures::{future, Future};
+use jsonrpc_core::{IoHandler, Value};
-use ethcore_rpc::{Metadata, Origin};
-use jsonrpc_core::{MetaIoHandler, Value};
 
 use tests::helpers::{serve_with_rpc, request};
 
 #[test]
 fn should_serve_rpc() {
 	// given
-	let mut io = MetaIoHandler::default();
+	let mut io = IoHandler::default();
 	io.add_method("rpc_test", |_| {
 		Ok(Value::String("Hello World!".into()))
 	});
@@ -49,70 +47,3 @@ fn should_serve_rpc() {
 	response.assert_status("HTTP/1.1 200 OK");
 	assert_eq!(response.body, "31\n{\"jsonrpc\":\"2.0\",\"result\":\"Hello World!\",\"id\":1}\n\n0\n\n".to_owned());
 }
-
-#[test]
-fn should_extract_metadata() {
-	// given
-	let mut io = MetaIoHandler::default();
-	io.add_method_with_meta("rpc_test", |_params, meta: Metadata| {
-		assert_eq!(meta.origin, Origin::Dapps("".into()));
-		assert_eq!(meta.dapp_id(), "".into());
-		future::ok(Value::String("Hello World!".into())).boxed()
-	});
-	let server = serve_with_rpc(io);
-
-	// when
-	let req = r#"{"jsonrpc":"2.0","id":1,"method":"rpc_test","params":[]}"#;
-	let response = request(server, &format!(
-		"\
-			POST /rpc/ HTTP/1.1\r\n\
-			Host: 127.0.0.1:8080\r\n\
-			Connection: close\r\n\
-			X-Parity-Origin: https://this.should.be.ignored\r\n\
-			Content-Type: application/json\r\n\
-			Content-Length: {}\r\n\
-			\r\n\
-			{}\r\n\
-		",
-		req.as_bytes().len(),
-		req,
-	));
-
-	// then
-	response.assert_status("HTTP/1.1 200 OK");
-	assert_eq!(response.body, "31\n{\"jsonrpc\":\"2.0\",\"result\":\"Hello World!\",\"id\":1}\n\n0\n\n".to_owned());
-}
-
-#[test]
-fn should_extract_metadata_from_custom_header() {
-	// given
-	let mut io = MetaIoHandler::default();
-	io.add_method_with_meta("rpc_test", |_params, meta: Metadata| {
-		assert_eq!(meta.origin, Origin::Dapps("https://parity.io/".into()));
-		assert_eq!(meta.dapp_id(), "https://parity.io/".into());
-		future::ok(Value::String("Hello World!".into())).boxed()
-	});
-	let server = serve_with_rpc(io);
-
-	// when
-	let req = r#"{"jsonrpc":"2.0","id":1,"method":"rpc_test","params":[]}"#;
-	let response = request(server, &format!(
-		"\
-			POST /rpc/ HTTP/1.1\r\n\
-			Host: 127.0.0.1:8080\r\n\
-			Connection: close\r\n\
-			Origin: null\r\n\
-			X-Parity-Origin: https://parity.io/\r\n\
-			Content-Type: application/json\r\n\
-			Content-Length: {}\r\n\
-			\r\n\
-			{}\r\n\
-		",
-		req.as_bytes().len(),
-		req,
-	));
-
-	// then
-	response.assert_status("HTTP/1.1 200 OK");
-	assert_eq!(response.body, "31\n{\"jsonrpc\":\"2.0\",\"result\":\"Hello World!\",\"id\":1}\n\n0\n\n".to_owned());
-}

dapps/src/tests/validation.rs

@@ -34,7 +34,7 @@ fn should_reject_invalid_host() {
 
 	// then
 	assert_eq!(response.status, "HTTP/1.1 403 Forbidden".to_owned());
-	assert!(response.body.contains("Current Host Is Disallowed"), response.body);
+	assert!(response.body.contains("Provided Host header is not whitelisted."), response.body);
 }
 
 #[test]
@@ -97,31 +97,3 @@ fn should_allow_parity_utils_even_on_invalid_domain() {
 	// then
 	assert_eq!(response.status, "HTTP/1.1 200 OK".to_owned());
 }
-
-#[test]
-fn should_not_return_cors_headers_for_rpc() {
-	// given
-	let server = serve_hosts(Some(vec!["localhost:8080".into()]));
-
-	// when
-	let response = request(server,
-		"\
-			POST /rpc HTTP/1.1\r\n\
-			Host: localhost:8080\r\n\
-			Origin: null\r\n\
-			Content-Type: application/json\r\n\
-			Connection: close\r\n\
-			\r\n\
-			{}
-		"
-	);
-
-	// then
-	assert_eq!(response.status, "HTTP/1.1 200 OK".to_owned());
-	assert!(
-		!response.headers_raw.contains("Access-Control-Allow-Origin"),
-		"CORS headers were not expected: {:?}",
-		response.headers
-	);
-}
-

docker/ubuntu/Dockerfile

@@ -8,7 +8,10 @@ RUN apt-get update && \
         curl \
         git \
         file \
-        binutils
+        binutils \
+        libssl-dev \
+        pkg-config \
+        libudev-dev
 
 # install rustup
 RUN curl https://sh.rustup.rs -sSf | sh -s -- -y

ethcore/Cargo.toml

@@ -11,44 +11,46 @@ build = "build.rs"
 "ethcore-ipc-codegen" = { path = "../ipc/codegen" }
 
 [dependencies]
-log = "0.3"
-env_logger = "0.4"
-rustc-serialize = "0.3"
-rust-crypto = "0.2.34"
-num_cpus = "1.2"
-crossbeam = "0.2.9"
-lazy_static = "0.2"
-bloomchain = "0.1"
-semver = "0.6"
 bit-set = "0.4"
-time = "0.1"
+bloomchain = "0.1"
-rand = "0.3"
-byteorder = "1.0"
-transient-hashmap = "0.4"
-linked-hash-map = "0.3.0"
-lru-cache = "0.1.0"
-itertools = "0.5"
-ethabi = "1.0.0"
-evmjit = { path = "../evmjit", optional = true }
-clippy = { version = "0.0.103", optional = true}
-ethash = { path = "../ethash" }
-ethcore-util = { path = "../util" }
-ethcore-io = { path = "../util/io" }
-ethcore-devtools = { path = "../devtools" }
-ethjson = { path = "../json" }
-ethcore-ipc = { path = "../ipc/rpc" }
-ethstore = { path = "../ethstore" }
-ethkey = { path = "../ethkey" }
-ethcore-ipc-nano = { path = "../ipc/nano" }
-rlp = { path = "../util/rlp" }
-ethcore-stratum = { path = "../stratum" }
-ethcore-bloom-journal = { path = "../util/bloom" }
-hardware-wallet = { path = "../hw" }
-ethcore-logger = { path = "../logger" }
-stats = { path = "../util/stats" }
-hyper = { git = "https://github.com/paritytech/hyper", default-features = false }
-num = "0.1"
 bn = { git = "https://github.com/paritytech/bn" }
+byteorder = "1.0"
+clippy = { version = "0.0.103", optional = true}
+crossbeam = "0.2.9"
+env_logger = "0.4"
+ethabi = "1.0.0"
+ethash = { path = "../ethash" }
+ethcore-bloom-journal = { path = "../util/bloom" }
+ethcore-devtools = { path = "../devtools" }
+ethcore-io = { path = "../util/io" }
+ethcore-ipc = { path = "../ipc/rpc" }
+ethcore-ipc-nano = { path = "../ipc/nano" }
+ethcore-logger = { path = "../logger" }
+ethcore-stratum = { path = "../stratum" }
+ethcore-util = { path = "../util" }
+ethjson = { path = "../json" }
+ethkey = { path = "../ethkey" }
+ethstore = { path = "../ethstore" }
+evmjit = { path = "../evmjit", optional = true }
+futures = "0.1"
+hardware-wallet = { path = "../hw" }
+hyper = { git = "https://github.com/paritytech/hyper", default-features = false }
+itertools = "0.5"
+lazy_static = "0.2"
+linked-hash-map = "0.3.0"
+log = "0.3"
+lru-cache = "0.1.0"
+native-contracts = { path = "native_contracts" }
+num = "0.1"
+num_cpus = "1.2"
+rand = "0.3"
+rlp = { path = "../util/rlp" }
+rust-crypto = "0.2.34"
+rustc-serialize = "0.3"
+semver = "0.6"
+stats = { path = "../util/stats" }
+time = "0.1"
+transient-hashmap = "0.4"
 
 [features]
 jit = ["evmjit"]

ethcore/native_contracts/Cargo.toml

@@ -0,0 +1,15 @@
+[package]
+name = "native-contracts"
+description = "Generated Rust code for Ethereum contract ABIs"
+version = "0.1.0"
+authors = ["Parity Technologies <admin@parity.io>"]
+build = "build.rs"
+
+[dependencies]
+ethabi = "1.0"
+futures = "0.1"
+byteorder = "1.0"
+ethcore-util = { path = "../../util" }
+
+[build-dependencies]
+native-contract-generator = { path = "generator" }

ethcore/native_contracts/build.rs

@@ -0,0 +1,40 @@
+// Copyright 2015-2017 Parity Technologies (UK) Ltd.
+// This file is part of Parity.
+
+// Parity is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// Parity is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
+
+extern crate native_contract_generator;
+
+use std::path::Path;
+use std::fs::File;
+use std::io::Write;
+
+// TODO: `include!` these from files where they're pretty-printed?
+const REGISTRY_ABI: &'static str = r#"[{"constant":true,"inputs":[{"name":"_data","type":"address"}],"name":"canReverse","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"_new","type":"address"}],"name":"setOwner","outputs":[],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"_name","type":"bytes32"},{"name":"_key","type":"string"},{"name":"_value","type":"bytes32"}],"name":"setData","outputs":[{"name":"success","type":"bool"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"_name","type":"string"}],"name":"confirmReverse","outputs":[{"name":"success","type":"bool"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"_name","type":"bytes32"}],"name":"reserve","outputs":[{"name":"success","type":"bool"}],"payable":true,"type":"function"},{"constant":false,"inputs":[{"name":"_name","type":"bytes32"}],"name":"drop","outputs":[{"name":"success","type":"bool"}],"payable":false,"type":"function"},{"constant":true,"inputs":[{"name":"_name","type":"bytes32"},{"name":"_key","type":"string"}],"name":"getAddress","outputs":[{"name":"","type":"address"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"_amount","type":"uint256"}],"name":"setFee","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"_name","type":"bytes32"},{"name":"_to","type":"address"}],"name":"transfer","outputs":[{"name":"success","type":"bool"}],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"owner","outputs":[{"name":"","type":"address"}],"payable":false,"type":"function"},{"constant":true,"inputs":[{"name":"_name","type":"bytes32"},{"name":"_key","type":"string"}],"name":"getData","outputs":[{"name":"","type":"bytes32"}],"payable":false,"type":"function"},{"constant":true,"inputs":[{"name":"_name","type":"bytes32"}],"name":"reserved","outputs":[{"name":"reserved","type":"bool"}],"payable":false,"type":"function"},{"constant":false,"inputs":[],"name":"drain","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"_name","type":"string"},{"name":"_who","type":"address"}],"name":"proposeReverse","outputs":[{"name":"success","type":"bool"}],"payable":false,"type":"function"},{"constant":true,"inputs":[{"name":"_name","type":"bytes32"}],"name":"hasReverse","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"},{"constant":true,"inputs":[{"name":"_name","type":"bytes32"},{"name":"_key","type":"string"}],"name":"getUint","outputs":[{"name":"","type":"uint256"}],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"fee","outputs":[{"name":"","type":"uint256"}],"payable":false,"type":"function"},{"constant":true,"inputs":[{"name":"_name","type":"bytes32"}],"name":"getOwner","outputs":[{"name":"","type":"address"}],"payable":false,"type":"function"},{"constant":true,"inputs":[{"name":"_name","type":"bytes32"}],"name":"getReverse","outputs":[{"name":"","type":"address"}],"payable":false,"type":"function"},{"constant":true,"inputs":[{"name":"_data","type":"address"}],"name":"reverse","outputs":[{"name":"","type":"string"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"_name","type":"bytes32"},{"name":"_key","type":"string"},{"name":"_value","type":"uint256"}],"name":"setUint","outputs":[{"name":"success","type":"bool"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"_name","type":"string"},{"name":"_who","type":"address"}],"name":"confirmReverseAs","outputs":[{"name":"success","type":"bool"}],"payable":false,"type":"function"},{"constant":false,"inputs":[],"name":"removeReverse","outputs":[],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"_name","type":"bytes32"},{"name":"_key","type":"string"},{"name":"_value","type":"address"}],"name":"setAddress","outputs":[{"name":"success","type":"bool"}],"payable":false,"type":"function"}]"#;
+const SERVICE_TRANSACTION_ABI: &'static str = r#"[{"constant":false,"inputs":[{"name":"_new","type":"address"}],"name":"setOwner","outputs":[],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"_who","type":"address"}],"name":"certify","outputs":[],"payable":false,"type":"function"},{"constant":true,"inputs":[{"name":"_who","type":"address"},{"name":"_field","type":"string"}],"name":"getAddress","outputs":[{"name":"","type":"address"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"_who","type":"address"}],"name":"revoke","outputs":[],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"owner","outputs":[{"name":"","type":"address"}],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"delegate","outputs":[{"name":"","type":"address"}],"payable":false,"type":"function"},{"constant":true,"inputs":[{"name":"_who","type":"address"},{"name":"_field","type":"string"}],"name":"getUint","outputs":[{"name":"","type":"uint256"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"_new","type":"address"}],"name":"setDelegate","outputs":[],"payable":false,"type":"function"},{"constant":true,"inputs":[{"name":"_who","type":"address"}],"name":"certified","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"},{"constant":true,"inputs":[{"name":"_who","type":"address"},{"name":"_field","type":"string"}],"name":"get","outputs":[{"name":"","type":"bytes32"}],"payable":false,"type":"function"}]"#;
+
+fn build_file(name: &str, abi: &str, filename: &str) {
+	let code = ::native_contract_generator::generate_module(name, abi).unwrap();
+
+	let out_dir = ::std::env::var("OUT_DIR").unwrap();
+	let dest_path = Path::new(&out_dir).join(filename);
+	let mut f = File::create(&dest_path).unwrap();
+
+	f.write_all(code.as_bytes()).unwrap();
+}
+
+fn main() {
+	build_file("Registry", REGISTRY_ABI, "registry.rs");
+	build_file("ServiceTransactionChecker", SERVICE_TRANSACTION_ABI, "service_transaction.rs");
+}

ethcore/native_contracts/generator/Cargo.toml

@@ -0,0 +1,9 @@
+[package]
+name = "native-contract-generator"
+description = "Generates Rust code for ethereum contract ABIs"
+version = "0.1.0"
+authors = ["Parity Technologies <admin@parity.io>"]
+
+[dependencies]
+ethabi = "1.0.2"
+heck = "0.2"

ethcore/native_contracts/generator/src/lib.rs

@@ -0,0 +1,346 @@
+// Copyright 2015-2017 Parity Technologies (UK) Ltd.
+// This file is part of Parity.
+
+// Parity is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// Parity is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
+
+//! Rust code contract generator.
+//! The code generated will require a dependence on the `ethcore-util`,
+//! `ethabi`, `byteorder`, and `futures` crates.
+//! This currently isn't hygienic, so compilation of generated code may fail
+//! due to missing crates or name collisions. This will change when
+//! it can be ported to a procedural macro.
+
+use ethabi::Contract;
+use ethabi::spec::{Interface, ParamType, Error as AbiError};
+use heck::SnakeCase;
+
+extern crate ethabi;
+extern crate heck;
+
+/// Errors in generation.
+#[derive(Debug)]
+pub enum Error {
+	/// Bad ABI.
+	Abi(AbiError),
+	/// Unsupported parameter type in given function.
+	UnsupportedType(String, ParamType),
+}
+
+/// Given an ABI string, generate code for a a Rust module containing
+/// a struct which can be used to call it.
+// TODO: make this a proc macro when that's possible.
+pub fn generate_module(struct_name: &str, abi: &str) -> Result<String, Error> {
+	let contract = Contract::new(Interface::load(abi.as_bytes()).map_err(Error::Abi)?);
+	let functions = generate_functions(&contract)?;
+
+	Ok(format!(r##"
+use byteorder::{{BigEndian, ByteOrder}};
+use futures::{{future, Future, BoxFuture}};
+use ethabi::{{Contract, Interface, Token}};
+use util::{{self, Uint}};
+
+pub struct {name} {{
+	contract: Contract,
+	/// Address to make calls to.
+	pub address: util::Address,
+}}
+
+const ABI: &'static str = r#"{abi_str}"#;
+
+impl {name} {{
+	/// Create a new instance of `{name}` with an address.
+	/// Calls can be made, given a callback for dispatching calls asynchronously.
+	pub fn new(address: util::Address) -> Self {{
+		let contract = Contract::new(Interface::load(ABI.as_bytes())
+			.expect("ABI checked at generation-time; qed"));
+		{name} {{
+			contract: contract,
+			address: address,
+		}}
+	}}
+
+	{functions}
+}}
+"##,
+		name = struct_name,
+		abi_str = abi,
+		functions = functions,
+	))
+}
+
+// generate function bodies from the ABI.
+fn generate_functions(contract: &Contract) -> Result<String, Error> {
+	let mut functions = String::new();
+	for function in contract.functions() {
+		let name = function.name();
+		let snake_name = name.to_snake_case();
+		let inputs = function.input_params();
+		let outputs = function.output_params();
+
+		let (input_params, to_tokens) = input_params_codegen(&inputs)
+			.map_err(|bad_type| Error::UnsupportedType(name.into(), bad_type))?;
+
+		let (output_type, decode_outputs) = output_params_codegen(&outputs)
+			.map_err(|bad_type| Error::UnsupportedType(name.into(), bad_type))?;
+
+		functions.push_str(&format!(r##"
+/// Call the function "{abi_name}" on the contract.
+/// Inputs: {abi_inputs:?}
+/// Outputs: {abi_outputs:?}
+pub fn {snake_name}<F, U>(&self, call: F, {params}) -> BoxFuture<{output_type}, String>
+	where F: Fn(util::Address, Vec<u8>) -> U, U: Future<Item=Vec<u8>, Error=String> + Send + 'static
+{{
+	let function = self.contract.function(r#"{abi_name}"#.to_string())
+		.expect("function existence checked at compile-time; qed");
+	let call_addr = self.address;
+
+	let call_future = match function.encode_call({to_tokens}) {{
+		Ok(call_data) => (call)(call_addr, call_data),
+		Err(e) => return future::err(format!("Error encoding call: {{:?}}", e)).boxed(),
+	}};
+
+	call_future
+		.and_then(move |out| function.decode_output(out).map_err(|e| format!("{{:?}}", e)))
+		.map(::std::collections::VecDeque::from)
+		.and_then(|mut outputs| {decode_outputs})
+		.boxed()
+}}
+	"##,
+		abi_name = name,
+		abi_inputs = inputs,
+		abi_outputs = outputs,
+		snake_name = snake_name,
+		params = input_params,
+		output_type = output_type,
+		to_tokens = to_tokens,
+		decode_outputs = decode_outputs,
+		))
+	}
+
+	Ok(functions)
+}
+
+// generate code for params in function signature and turning them into tokens.
+//
+// two pieces of code are generated: the first gives input types for the function signature,
+// and the second gives code to tokenize those inputs.
+//
+// params of form `param_0: type_0, param_1: type_1, ...`
+// tokenizing code of form `{let mut tokens = Vec::new(); tokens.push({param_X}); tokens }`
+//
+// returns any unsupported param type encountered.
+fn input_params_codegen(inputs: &[ParamType]) -> Result<(String, String), ParamType> {
+	let mut params = String::new();
+	let mut to_tokens = "{ let mut tokens = Vec::new();".to_string();
+
+	for (index, param_type) in inputs.iter().enumerate() {
+		let param_name = format!("param_{}", index);
+		let rust_type = rust_type(param_type.clone())?;
+		let (needs_mut, tokenize_code) = tokenize(&param_name, param_type.clone());
+
+		params.push_str(&format!("{}{}: {}, ",
+			if needs_mut { "mut " } else { "" }, param_name, rust_type));
+
+		to_tokens.push_str(&format!("tokens.push({{ {} }});", tokenize_code));
+	}
+
+	to_tokens.push_str(" tokens }");
+	Ok((params, to_tokens))
+}
+
+// generate code for outputs of the function and detokenizing them.
+//
+// two pieces of code are generated: the first gives an output type for the function signature
+// as a tuple, and the second gives code to get that tuple from a deque of tokens.
+//
+// produce output type of the form (type_1, type_2, ...) without trailing comma.
+// produce code for getting this output type from `outputs: VecDeque<Token>`, where
+// an `Err(String)` can be returned.
+//
+// returns any unsupported param type encountered.
+fn output_params_codegen(outputs: &[ParamType]) -> Result<(String, String), ParamType> {
+	let mut output_type = "(".to_string();
+	let mut decode_outputs = "Ok((".to_string();
+
+	for (index, output) in outputs.iter().cloned().enumerate() {
+		let rust_type = rust_type(output.clone())?;
+
+		output_type.push_str(&rust_type);
+
+		decode_outputs.push_str(&format!(
+			r#"
+				outputs
+					.pop_front()
+					.and_then(|output| {{ {} }})
+					.ok_or_else(|| "Wrong output type".to_string())?
+			"#,
+			detokenize("output", output)
+		));
+
+		// don't append trailing commas for the last element
+		// so we can reuse the same code for single-output contracts,
+		// since T == (T) != (T,)
+		if index < outputs.len() - 1 {
+			output_type.push_str(", ");
+			decode_outputs.push_str(", ");
+		}
+	}
+
+	output_type.push_str(")");
+	decode_outputs.push_str("))");
+	Ok((output_type, decode_outputs))
+}
+
+// create code for an argument type from param type.
+fn rust_type(input: ParamType) -> Result<String, ParamType> {
+	Ok(match input {
+		ParamType::Address => "util::Address".into(),
+		ParamType::FixedBytes(len) if len <= 32 => format!("util::H{}", len * 8),
+		ParamType::Bytes | ParamType::FixedBytes(_) => "Vec<u8>".into(),
+		ParamType::Int(width) => match width {
+			8 | 16 | 32 | 64 => format!("i{}", width),
+			_ => return Err(ParamType::Int(width)),
+		},
+		ParamType::Uint(width) => match width {
+			8 | 16 | 32 | 64 => format!("u{}", width),
+			128 | 160 | 256 => format!("util::U{}", width),
+			_ => return Err(ParamType::Uint(width)),
+		},
+		ParamType::Bool => "bool".into(),
+		ParamType::String => "String".into(),
+		ParamType::Array(kind) => format!("Vec<{}>", rust_type(*kind)?),
+		other => return Err(other),
+	})
+}
+
+// create code for tokenizing this parameter.
+// returns (needs_mut, code), where needs_mut indicates mutability required.
+// panics on unsupported types.
+fn tokenize(name: &str, input: ParamType) -> (bool, String) {
+	let mut needs_mut = false;
+	let code = match input {
+		ParamType::Address => format!("Token::Address({}.0)", name),
+		ParamType::Bytes => format!("Token::Bytes({})", name),
+		ParamType::FixedBytes(len) if len <= 32 =>
+			format!("Token::FixedBytes({}.0.to_vec())", name),
+		ParamType::FixedBytes(len) => {
+			needs_mut = true;
+			format!("{}.resize({}, 0); Token::FixedBytes({})", name, len, name)
+		}
+		ParamType::Int(width) => match width {
+			8 => format!("let mut r = [0xff; 32]; r[31] = {}; Token::Int(r)", name),
+			16 | 32 | 64 =>
+				format!("let mut r = [0xff; 32]; BigEndian::write_i{}(&mut r[{}..], {}); Token::Int(r))",
+					width, 32 - (width / 8), name),
+			_ => panic!("Signed int with more than 64 bits not supported."),
+		},
+		ParamType::Uint(width) => format!(
+			"let mut r = [0; 32]; {}.to_big_endian(&mut r); Token::Uint(r)",
+			if width <= 64 { format!("util::U256::from({} as u64)", name) }
+			else { format!("util::U256::from({})", name) }
+		),
+		ParamType::Bool => format!("Token::Bool({})", name),
+		ParamType::String => format!("Token::String({})", name),
+		ParamType::Array(kind) => {
+			let (needs_mut, code) = tokenize("i", *kind);
+			format!("Token::Array({}.into_iter().map(|{}i| {{ {} }}).collect())",
+				name, if needs_mut { "mut " } else { "" }, code)
+		}
+		ParamType::FixedArray(_, _) => panic!("Fixed-length arrays not supported."),
+	};
+
+	(needs_mut, code)
+}
+
+// create code for detokenizing this parameter.
+// takes an output type and the identifier of a token.
+// expands to code that evaluates to a Option<concrete type>
+// panics on unsupported types.
+fn detokenize(name: &str, output_type: ParamType) -> String {
+	match output_type {
+		ParamType::Address => format!("{}.to_address().map(util::H160)", name),
+		ParamType::Bytes => format!("{}.to_bytes()", name),
+		ParamType::FixedBytes(len) if len <= 32 => {
+			// ensure no panic on slice too small.
+			let read_hash = format!("b.resize({}, 0); util::H{}::from_slice(&b[..{}])",
+				len, len * 8, len);
+
+			format!("{}.to_fixed_bytes().map(|mut b| {{ {} }})",
+				name, read_hash)
+		}
+		ParamType::FixedBytes(_) => format!("{}.to_fixed_bytes()", name),
+		ParamType::Int(width) => {
+			let read_int = match width {
+				8 => "i[31] as i8".into(),
+				16 | 32 | 64 => format!("BigEndian::read_i{}(&i[{}..])", width, 32 - (width / 8)),
+				_ => panic!("Signed integers over 64 bytes not allowed."),
+			};
+			format!("{}.to_int().map(|i| {})", name, read_int)
+		}
+		ParamType::Uint(width) => {
+			let read_uint = match width {
+				8 | 16 | 32 | 64 => format!("util::U256(u).low_u64() as u{}", width),
+				_ => format!("util::U{}::from(&u[..])", width),
+			};
+
+			format!("{}.to_uint().map(|u| {})", name, read_uint)
+		}
+		ParamType::Bool => format!("{}.to_bool()", name),
+		ParamType::String => format!("{}.to_string()", name),
+		ParamType::Array(kind) => {
+			let read_array = format!("x.into_iter().map(|a| {{ {} }}).collect::<Option<Vec<_>>()",
+				detokenize("a", *kind));
+
+			format!("{}.to_array().and_then(|x| {})",
+				name, read_array)
+		}
+		ParamType::FixedArray(_, _) => panic!("Fixed-length arrays not supported.")
+	}
+}
+
+#[cfg(test)]
+mod tests {
+	use ethabi::spec::ParamType;
+
+	#[test]
+	fn input_types() {
+		assert_eq!(::input_params_codegen(&[]).unwrap().0, "");
+		assert_eq!(::input_params_codegen(&[ParamType::Address]).unwrap().0, "param_0: util::Address, ");
+		assert_eq!(::input_params_codegen(&[ParamType::Address, ParamType::Bytes]).unwrap().0,
+			"param_0: util::Address, param_1: Vec<u8>, ");
+	}
+
+	#[test]
+	fn output_types() {
+		assert_eq!(::output_params_codegen(&[]).unwrap().0, "()");
+		assert_eq!(::output_params_codegen(&[ParamType::Address]).unwrap().0, "(util::Address)");
+		assert_eq!(::output_params_codegen(&[ParamType::Address, ParamType::Array(Box::new(ParamType::Bytes))]).unwrap().0,
+			"(util::Address, Vec<Vec<u8>>)");
+	}
+
+	#[test]
+	fn rust_type() {
+		assert_eq!(::rust_type(ParamType::FixedBytes(32)).unwrap(), "util::H256");
+		assert_eq!(::rust_type(ParamType::Array(Box::new(ParamType::FixedBytes(32)))).unwrap(),
+			"Vec<util::H256>");
+
+		assert_eq!(::rust_type(ParamType::Uint(64)).unwrap(), "u64");
+		assert!(::rust_type(ParamType::Uint(63)).is_err());
+
+		assert_eq!(::rust_type(ParamType::Int(32)).unwrap(), "i32");
+		assert_eq!(::rust_type(ParamType::Uint(256)).unwrap(), "util::U256");
+	}
+
+	// codegen tests will need bootstrapping of some kind.
+}

ethcore/native_contracts/src/lib.rs

@@ -0,0 +1,30 @@
+// Copyright 2015-2017 Parity Technologies (UK) Ltd.
+// This file is part of Parity.
+
+// Parity is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// Parity is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
+
+//! Native contracts useful for Parity. These are type-safe wrappers
+//! autogenerated at compile-time from Ethereum ABIs, and can be instantiated
+//! given any closure which can dispatch calls to them asynchronously.
+
+extern crate futures;
+extern crate byteorder;
+extern crate ethabi;
+extern crate ethcore_util as util;
+
+mod registry;
+mod service_transaction;
+
+pub use self::registry::Registry;
+pub use self::service_transaction::ServiceTransactionChecker;

ethcore/native_contracts/src/registry.rs

@@ -0,0 +1,22 @@
+// Copyright 2015-2017 Parity Technologies (UK) Ltd.
+// This file is part of Parity.
+
+// Parity is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// Parity is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
+
+#![allow(unused_mut, unused_variables, unused_imports)]
+
+//! Registrar contract: maps names to addresses and data.
+// TODO: testing.
+
+include!(concat!(env!("OUT_DIR"), "/registry.rs"));

ethcore/native_contracts/src/service_transaction.rs

@@ -0,0 +1,22 @@
+// Copyright 2015-2017 Parity Technologies (UK) Ltd.
+// This file is part of Parity.
+
+// Parity is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// Parity is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
+
+#![allow(unused_mut, unused_variables, unused_imports)]
+
+//! Service transaction contract.
+// TODO: testing.
+
+include!(concat!(env!("OUT_DIR"), "/service_transaction.rs"));

ethcore/res/ethereum/expanse.json

@@ -15,11 +15,11 @@
 				"difficultyHardforkTransition": "0x59d9",
 				"difficultyHardforkBoundDivisor": "0x0200",
 				"bombDefuseTransition": "0x30d40",
-				"eip150Transition": "0x7fffffffffffffff",
+				"eip150Transition": "0x927C0",
-				"eip155Transition": "0x7fffffffffffffff",
+				"eip155Transition": "0x927C0",
-				"eip160Transition": "0x7fffffffffffffff",
+				"eip160Transition": "0x927C0",
-				"eip161abcTransition": "0x7fffffffffffffff",
+				"eip161abcTransition": "0x927C0",
-				"eip161dTransition": "0x7fffffffffffffff"
+				"eip161dTransition": "0x927C0"
 			}
 		}
 	},
@@ -28,6 +28,7 @@
 		"maximumExtraDataSize": "0x20",
 		"minGasLimit": "0x1388",
 		"networkID": "0x1",
+		"chainID": "0x2",
 		"subprotocolName": "exp",
 		"eip98Transition": "0x7fffffffffffff"
 	},

ethcore/src/client/client.rs

@@ -30,47 +30,48 @@ use util::trie::TrieSpec;
 use util::kvdb::*;
 
 // other
-use io::*;
-use views::BlockView;
-use error::{ImportError, ExecutionError, CallError, BlockError, ImportResult, Error as EthcoreError};
-use header::BlockNumber;
-use state::{self, State, CleanupMode};
-use spec::Spec;
 use basic_types::Seal;
-use engines::Engine;
-use service::ClientIoMessage;
-use env_info::LastHashes;
-use verification;
-use verification::{PreverifiedBlock, Verifier};
 use block::*;
-use transaction::{LocalizedTransaction, UnverifiedTransaction, SignedTransaction, Transaction, PendingTransaction, Action};
-use blockchain::extras::TransactionAddress;
-use types::filter::Filter;
-use types::mode::Mode as IpcMode;
-use log_entry::LocalizedLogEntry;
-use verification::queue::BlockQueue;
 use blockchain::{BlockChain, BlockProvider, TreeRoute, ImportRoute};
+use blockchain::extras::TransactionAddress;
+use client::Error as ClientError;
 use client::{
 	BlockId, TransactionId, UncleId, TraceId, ClientConfig, BlockChainClient,
 	MiningBlockChainClient, EngineClient, TraceFilter, CallAnalytics, BlockImportError, Mode,
 	ChainNotify, PruningInfo,
 };
-use client::Error as ClientError;
-use env_info::EnvInfo;
-use executive::{Executive, Executed, TransactOptions, contract_address};
-use receipt::{Receipt, LocalizedReceipt};
-use trace::{TraceDB, ImportRequest as TraceImportRequest, LocalizedTrace, Database as TraceDatabase};
-use trace;
-use trace::FlatTransactionTraces;
-use evm::{Factory as EvmFactory, Schedule};
-use miner::{Miner, MinerService, TransactionImportResult};
-use snapshot::{self, io as snapshot_io};
-use factory::Factories;
-use rlp::UntrustedRlp;
-use state_db::StateDB;
-use rand::OsRng;
-use client::registry::Registry;
 use encoded;
+use engines::Engine;
+use env_info::EnvInfo;
+use env_info::LastHashes;
+use error::{ImportError, ExecutionError, CallError, BlockError, ImportResult, Error as EthcoreError};
+use evm::{Factory as EvmFactory, Schedule};
+use executive::{Executive, Executed, TransactOptions, contract_address};
+use factory::Factories;
+use futures::{future, Future};
+use header::BlockNumber;
+use io::*;
+use log_entry::LocalizedLogEntry;
+use miner::{Miner, MinerService, TransactionImportResult};
+use native_contracts::Registry;
+use rand::OsRng;
+use receipt::{Receipt, LocalizedReceipt};
+use rlp::UntrustedRlp;
+use service::ClientIoMessage;
+use snapshot::{self, io as snapshot_io};
+use spec::Spec;
+use state_db::StateDB;
+use state::{self, State, CleanupMode};
+use trace;
+use trace::{TraceDB, ImportRequest as TraceImportRequest, LocalizedTrace, Database as TraceDatabase};
+use trace::FlatTransactionTraces;
+use transaction::{LocalizedTransaction, UnverifiedTransaction, SignedTransaction, Transaction, PendingTransaction, Action};
+use types::filter::Filter;
+use types::mode::Mode as IpcMode;
+use verification;
+use verification::{PreverifiedBlock, Verifier};
+use verification::queue::BlockQueue;
+use views::BlockView;
 
 // re-export
 pub use types::blockchain_info::BlockChainInfo;
@@ -254,8 +255,7 @@ impl Client {
 
 		if let Some(reg_addr) = client.additional_params().get("registrar").and_then(|s| Address::from_str(s).ok()) {
 			trace!(target: "client", "Found registrar at {}", reg_addr);
-			let weak = Arc::downgrade(&client);
+			let registrar = Registry::new(reg_addr);
-			let registrar = Registry::new(reg_addr, move |a, d| weak.upgrade().ok_or("No client!".into()).and_then(|c| c.call_contract(BlockId::Latest, a, d)));
 			*client.registrar.lock() = Some(registrar);
 		}
 		Ok(client)
@@ -1488,12 +1488,17 @@ impl BlockChainClient for Client {
 	}
 
 	fn registrar_address(&self) -> Option<Address> {
-		self.registrar.lock().as_ref().map(|r| r.address.clone())
+		self.registrar.lock().as_ref().map(|r| r.address)
 	}
 
 	fn registry_address(&self, name: String) -> Option<Address> {
 		self.registrar.lock().as_ref()
-			.and_then(|r| r.get_address(&(name.as_bytes().sha3()), "A").ok())
+			.and_then(|r| {
+				let dispatch = move |reg_addr, data| {
+					future::done(self.call_contract(BlockId::Latest, reg_addr, data))
+				};
+				r.get_address(dispatch, name.as_bytes().sha3(), "A".to_string()).wait().ok()
+			})
 			.and_then(|a| if a.is_zero() { None } else { Some(a) })
 	}
 }

ethcore/src/client/mod.rs

@@ -16,7 +16,6 @@
 
 //! Blockchain database client.
 
-mod registry;
 mod config;
 mod error;
 mod test_client;

ethcore/src/client/registry.rs

@@ -1,338 +0,0 @@
-// Autogenerated from JSON contract definition using Rust contract convertor.
-// Command line: --name=Registry --jsonabi=/Users/gav/registry.abi
-#![allow(unused_imports)]
-use std::string::String;
-use std::result::Result;
-use std::fmt;
-use {util, ethabi};
-use util::{Uint};
-
-pub struct Registry {
-	contract: ethabi::Contract,
-	pub address: util::Address,
-	do_call: Box<Fn(util::Address, Vec<u8>) -> Result<Vec<u8>, String> + Send + Sync + 'static>,
-}
-impl Registry {
-	pub fn new<F>(address: util::Address, do_call: F) -> Self
-		where F: Fn(util::Address, Vec<u8>) -> Result<Vec<u8>, String> + Send + Sync + 'static {
-		Registry {
-			contract: ethabi::Contract::new(ethabi::Interface::load(b"[{\"constant\":true,\"inputs\":[{\"name\":\"_data\",\"type\":\"address\"}],\"name\":\"canReverse\",\"outputs\":[{\"name\":\"\",\"type\":\"bool\"}],\"payable\":false,\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"name\":\"_new\",\"type\":\"address\"}],\"name\":\"setOwner\",\"outputs\":[],\"payable\":false,\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"name\":\"_name\",\"type\":\"bytes32\"},{\"name\":\"_key\",\"type\":\"string\"},{\"name\":\"_value\",\"type\":\"bytes32\"}],\"name\":\"setData\",\"outputs\":[{\"name\":\"success\",\"type\":\"bool\"}],\"payable\":false,\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"name\":\"_name\",\"type\":\"string\"}],\"name\":\"confirmReverse\",\"outputs\":[{\"name\":\"success\",\"type\":\"bool\"}],\"payable\":false,\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"name\":\"_name\",\"type\":\"bytes32\"}],\"name\":\"reserve\",\"outputs\":[{\"name\":\"success\",\"type\":\"bool\"}],\"payable\":true,\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"name\":\"_name\",\"type\":\"bytes32\"}],\"name\":\"drop\",\"outputs\":[{\"name\":\"success\",\"type\":\"bool\"}],\"payable\":false,\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"_name\",\"type\":\"bytes32\"},{\"name\":\"_key\",\"type\":\"string\"}],\"name\":\"getAddress\",\"outputs\":[{\"name\":\"\",\"type\":\"address\"}],\"payable\":false,\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"name\":\"_amount\",\"type\":\"uint256\"}],\"name\":\"setFee\",\"outputs\":[{\"name\":\"\",\"type\":\"bool\"}],\"payable\":false,\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"name\":\"_name\",\"type\":\"bytes32\"},{\"name\":\"_to\",\"type\":\"address\"}],\"name\":\"transfer\",\"outputs\":[{\"name\":\"success\",\"type\":\"bool\"}],\"payable\":false,\"type\":\"function\"},{\"constant\":true,\"inputs\":[],\"name\":\"owner\",\"outputs\":[{\"name\":\"\",\"type\":\"address\"}],\"payable\":false,\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"_name\",\"type\":\"bytes32\"},{\"name\":\"_key\",\"type\":\"string\"}],\"name\":\"getData\",\"outputs\":[{\"name\":\"\",\"type\":\"bytes32\"}],\"payable\":false,\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"_name\",\"type\":\"bytes32\"}],\"name\":\"reserved\",\"outputs\":[{\"name\":\"reserved\",\"type\":\"bool\"}],\"payable\":false,\"type\":\"function\"},{\"constant\":false,\"inputs\":[],\"name\":\"drain\",\"outputs\":[{\"name\":\"\",\"type\":\"bool\"}],\"payable\":false,\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"name\":\"_name\",\"type\":\"string\"},{\"name\":\"_who\",\"type\":\"address\"}],\"name\":\"proposeReverse\",\"outputs\":[{\"name\":\"success\",\"type\":\"bool\"}],\"payable\":false,\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"_name\",\"type\":\"bytes32\"}],\"name\":\"hasReverse\",\"outputs\":[{\"name\":\"\",\"type\":\"bool\"}],\"payable\":false,\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"_name\",\"type\":\"bytes32\"},{\"name\":\"_key\",\"type\":\"string\"}],\"name\":\"getUint\",\"outputs\":[{\"name\":\"\",\"type\":\"uint256\"}],\"payable\":false,\"type\":\"function\"},{\"constant\":true,\"inputs\":[],\"name\":\"fee\",\"outputs\":[{\"name\":\"\",\"type\":\"uint256\"}],\"payable\":false,\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"_name\",\"type\":\"bytes32\"}],\"name\":\"getOwner\",\"outputs\":[{\"name\":\"\",\"type\":\"address\"}],\"payable\":false,\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"_name\",\"type\":\"bytes32\"}],\"name\":\"getReverse\",\"outputs\":[{\"name\":\"\",\"type\":\"address\"}],\"payable\":false,\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"_data\",\"type\":\"address\"}],\"name\":\"reverse\",\"outputs\":[{\"name\":\"\",\"type\":\"string\"}],\"payable\":false,\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"name\":\"_name\",\"type\":\"bytes32\"},{\"name\":\"_key\",\"type\":\"string\"},{\"name\":\"_value\",\"type\":\"uint256\"}],\"name\":\"setUint\",\"outputs\":[{\"name\":\"success\",\"type\":\"bool\"}],\"payable\":false,\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"name\":\"_name\",\"type\":\"string\"},{\"name\":\"_who\",\"type\":\"address\"}],\"name\":\"confirmReverseAs\",\"outputs\":[{\"name\":\"success\",\"type\":\"bool\"}],\"payable\":false,\"type\":\"function\"},{\"constant\":false,\"inputs\":[],\"name\":\"removeReverse\",\"outputs\":[],\"payable\":false,\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"name\":\"_name\",\"type\":\"bytes32\"},{\"name\":\"_key\",\"type\":\"string\"},{\"name\":\"_value\",\"type\":\"address\"}],\"name\":\"setAddress\",\"outputs\":[{\"name\":\"success\",\"type\":\"bool\"}],\"payable\":false,\"type\":\"function\"}]").expect("JSON is autogenerated; qed")),
-			address: address,
-			do_call: Box::new(do_call),
-		}
-	}
-	fn as_string<T: fmt::Debug>(e: T) -> String { format!("{:?}", e) }
-
-	/// Auto-generated from: `{"constant":true,"inputs":[{"name":"_data","type":"address"}],"name":"canReverse","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"}`
-	#[allow(dead_code)]
-	pub fn can_reverse(&self, _data: &util::Address) -> Result<bool, String>
-		 {
-		let call = self.contract.function("canReverse".into()).map_err(Self::as_string)?;
-		let data = call.encode_call(
-			vec![ethabi::Token::Address(_data.clone().0)]
-		).map_err(Self::as_string)?;
-		let output = call.decode_output((self.do_call)(self.address.clone(), data)?).map_err(Self::as_string)?;
-		let mut result = output.into_iter().rev().collect::<Vec<_>>();
-		Ok(({ let r = result.pop().ok_or("Invalid return arity")?; let r = r.to_bool().ok_or("Invalid type returned")?; r }))
-	}
-
-	/// Auto-generated from: `{"constant":false,"inputs":[{"name":"_new","type":"address"}],"name":"setOwner","outputs":[],"payable":false,"type":"function"}`
-	#[allow(dead_code)]
-	pub fn set_owner(&self, _new: &util::Address) -> Result<(), String>
-		 {
-		let call = self.contract.function("setOwner".into()).map_err(Self::as_string)?;
-		let data = call.encode_call(
-			vec![ethabi::Token::Address(_new.clone().0)]
-		).map_err(Self::as_string)?;
-		call.decode_output((self.do_call)(self.address.clone(), data)?).map_err(Self::as_string)?;
-
-		Ok(())
-	}
-
-	/// Auto-generated from: `{"constant":false,"inputs":[{"name":"_name","type":"bytes32"},{"name":"_key","type":"string"},{"name":"_value","type":"bytes32"}],"name":"setData","outputs":[{"name":"success","type":"bool"}],"payable":false,"type":"function"}`
-	#[allow(dead_code)]
-	pub fn set_data(&self, _name: &util::H256, _key: &str, _value: &util::H256) -> Result<bool, String>
-		 {
-		let call = self.contract.function("setData".into()).map_err(Self::as_string)?;
-		let data = call.encode_call(
-			vec![ethabi::Token::FixedBytes(_name.as_ref().to_owned()), ethabi::Token::String(_key.to_owned()), ethabi::Token::FixedBytes(_value.as_ref().to_owned())]
-		).map_err(Self::as_string)?;
-		let output = call.decode_output((self.do_call)(self.address.clone(), data)?).map_err(Self::as_string)?;
-		let mut result = output.into_iter().rev().collect::<Vec<_>>();
-		Ok(({ let r = result.pop().ok_or("Invalid return arity")?; let r = r.to_bool().ok_or("Invalid type returned")?; r }))
-	}
-
-	/// Auto-generated from: `{"constant":false,"inputs":[{"name":"_name","type":"string"}],"name":"confirmReverse","outputs":[{"name":"success","type":"bool"}],"payable":false,"type":"function"}`
-	#[allow(dead_code)]
-	pub fn confirm_reverse(&self, _name: &str) -> Result<bool, String>
-		 {
-		let call = self.contract.function("confirmReverse".into()).map_err(Self::as_string)?;
-		let data = call.encode_call(
-			vec![ethabi::Token::String(_name.to_owned())]
-		).map_err(Self::as_string)?;
-		let output = call.decode_output((self.do_call)(self.address.clone(), data)?).map_err(Self::as_string)?;
-		let mut result = output.into_iter().rev().collect::<Vec<_>>();
-		Ok(({ let r = result.pop().ok_or("Invalid return arity")?; let r = r.to_bool().ok_or("Invalid type returned")?; r }))
-	}
-
-	/// Auto-generated from: `{"constant":false,"inputs":[{"name":"_name","type":"bytes32"}],"name":"reserve","outputs":[{"name":"success","type":"bool"}],"payable":true,"type":"function"}`
-	#[allow(dead_code)]
-	pub fn reserve(&self, _name: &util::H256) -> Result<bool, String>
-		 {
-		let call = self.contract.function("reserve".into()).map_err(Self::as_string)?;
-		let data = call.encode_call(
-			vec![ethabi::Token::FixedBytes(_name.as_ref().to_owned())]
-		).map_err(Self::as_string)?;
-		let output = call.decode_output((self.do_call)(self.address.clone(), data)?).map_err(Self::as_string)?;
-		let mut result = output.into_iter().rev().collect::<Vec<_>>();
-		Ok(({ let r = result.pop().ok_or("Invalid return arity")?; let r = r.to_bool().ok_or("Invalid type returned")?; r }))
-	}
-
-	/// Auto-generated from: `{"constant":false,"inputs":[{"name":"_name","type":"bytes32"}],"name":"drop","outputs":[{"name":"success","type":"bool"}],"payable":false,"type":"function"}`
-	#[allow(dead_code)]
-	pub fn drop(&self, _name: &util::H256) -> Result<bool, String>
-		 {
-		let call = self.contract.function("drop".into()).map_err(Self::as_string)?;
-		let data = call.encode_call(
-			vec![ethabi::Token::FixedBytes(_name.as_ref().to_owned())]
-		).map_err(Self::as_string)?;
-		let output = call.decode_output((self.do_call)(self.address.clone(), data)?).map_err(Self::as_string)?;
-		let mut result = output.into_iter().rev().collect::<Vec<_>>();
-		Ok(({ let r = result.pop().ok_or("Invalid return arity")?; let r = r.to_bool().ok_or("Invalid type returned")?; r }))
-	}
-
-	/// Auto-generated from: `{"constant":true,"inputs":[{"name":"_name","type":"bytes32"},{"name":"_key","type":"string"}],"name":"getAddress","outputs":[{"name":"","type":"address"}],"payable":false,"type":"function"}`
-	#[allow(dead_code)]
-	pub fn get_address(&self, _name: &util::H256, _key: &str) -> Result<util::Address, String>
-		 {
-		let call = self.contract.function("getAddress".into()).map_err(Self::as_string)?;
-		let data = call.encode_call(
-			vec![ethabi::Token::FixedBytes(_name.as_ref().to_owned()), ethabi::Token::String(_key.to_owned())]
-		).map_err(Self::as_string)?;
-		let output = call.decode_output((self.do_call)(self.address.clone(), data)?).map_err(Self::as_string)?;
-		let mut result = output.into_iter().rev().collect::<Vec<_>>();
-		Ok(({ let r = result.pop().ok_or("Invalid return arity")?; let r = r.to_address().ok_or("Invalid type returned")?; util::Address::from(r) }))
-	}
-
-	/// Auto-generated from: `{"constant":false,"inputs":[{"name":"_amount","type":"uint256"}],"name":"setFee","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"}`
-	#[allow(dead_code)]
-	pub fn set_fee(&self, _amount: util::U256) -> Result<bool, String>
-		 {
-		let call = self.contract.function("setFee".into()).map_err(Self::as_string)?;
-		let data = call.encode_call(
-			vec![ethabi::Token::Uint({ let mut r = [0u8; 32]; _amount.to_big_endian(&mut r); r })]
-		).map_err(Self::as_string)?;
-		let output = call.decode_output((self.do_call)(self.address.clone(), data)?).map_err(Self::as_string)?;
-		let mut result = output.into_iter().rev().collect::<Vec<_>>();
-		Ok(({ let r = result.pop().ok_or("Invalid return arity")?; let r = r.to_bool().ok_or("Invalid type returned")?; r }))
-	}
-
-	/// Auto-generated from: `{"constant":false,"inputs":[{"name":"_name","type":"bytes32"},{"name":"_to","type":"address"}],"name":"transfer","outputs":[{"name":"success","type":"bool"}],"payable":false,"type":"function"}`
-	#[allow(dead_code)]
-	pub fn transfer(&self, _name: &util::H256, _to: &util::Address) -> Result<bool, String>
-		 {
-		let call = self.contract.function("transfer".into()).map_err(Self::as_string)?;
-		let data = call.encode_call(
-			vec![ethabi::Token::FixedBytes(_name.as_ref().to_owned()), ethabi::Token::Address(_to.clone().0)]
-		).map_err(Self::as_string)?;
-		let output = call.decode_output((self.do_call)(self.address.clone(), data)?).map_err(Self::as_string)?;
-		let mut result = output.into_iter().rev().collect::<Vec<_>>();
-		Ok(({ let r = result.pop().ok_or("Invalid return arity")?; let r = r.to_bool().ok_or("Invalid type returned")?; r }))
-	}
-
-	/// Auto-generated from: `{"constant":true,"inputs":[],"name":"owner","outputs":[{"name":"","type":"address"}],"payable":false,"type":"function"}`
-	#[allow(dead_code)]
-	pub fn owner(&self) -> Result<util::Address, String>
-		 {
-		let call = self.contract.function("owner".into()).map_err(Self::as_string)?;
-		let data = call.encode_call(
-			vec![]
-		).map_err(Self::as_string)?;
-		let output = call.decode_output((self.do_call)(self.address.clone(), data)?).map_err(Self::as_string)?;
-		let mut result = output.into_iter().rev().collect::<Vec<_>>();
-		Ok(({ let r = result.pop().ok_or("Invalid return arity")?; let r = r.to_address().ok_or("Invalid type returned")?; util::Address::from(r) }))
-	}
-
-	/// Auto-generated from: `{"constant":true,"inputs":[{"name":"_name","type":"bytes32"},{"name":"_key","type":"string"}],"name":"getData","outputs":[{"name":"","type":"bytes32"}],"payable":false,"type":"function"}`
-	#[allow(dead_code)]
-	pub fn get_data(&self, _name: &util::H256, _key: &str) -> Result<util::H256, String>
-		 {
-		let call = self.contract.function("getData".into()).map_err(Self::as_string)?;
-		let data = call.encode_call(
-			vec![ethabi::Token::FixedBytes(_name.as_ref().to_owned()), ethabi::Token::String(_key.to_owned())]
-		).map_err(Self::as_string)?;
-		let output = call.decode_output((self.do_call)(self.address.clone(), data)?).map_err(Self::as_string)?;
-		let mut result = output.into_iter().rev().collect::<Vec<_>>();
-		Ok(({ let r = result.pop().ok_or("Invalid return arity")?; let r = r.to_fixed_bytes().ok_or("Invalid type returned")?; util::H256::from_slice(r.as_ref()) }))
-	}
-
-	/// Auto-generated from: `{"constant":true,"inputs":[{"name":"_name","type":"bytes32"}],"name":"reserved","outputs":[{"name":"reserved","type":"bool"}],"payable":false,"type":"function"}`
-	#[allow(dead_code)]
-	pub fn reserved(&self, _name: &util::H256) -> Result<bool, String>
-		 {
-		let call = self.contract.function("reserved".into()).map_err(Self::as_string)?;
-		let data = call.encode_call(
-			vec![ethabi::Token::FixedBytes(_name.as_ref().to_owned())]
-		).map_err(Self::as_string)?;
-		let output = call.decode_output((self.do_call)(self.address.clone(), data)?).map_err(Self::as_string)?;
-		let mut result = output.into_iter().rev().collect::<Vec<_>>();
-		Ok(({ let r = result.pop().ok_or("Invalid return arity")?; let r = r.to_bool().ok_or("Invalid type returned")?; r }))
-	}
-
-	/// Auto-generated from: `{"constant":false,"inputs":[],"name":"drain","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"}`
-	#[allow(dead_code)]
-	pub fn drain(&self) -> Result<bool, String>
-		 {
-		let call = self.contract.function("drain".into()).map_err(Self::as_string)?;
-		let data = call.encode_call(
-			vec![]
-		).map_err(Self::as_string)?;
-		let output = call.decode_output((self.do_call)(self.address.clone(), data)?).map_err(Self::as_string)?;
-		let mut result = output.into_iter().rev().collect::<Vec<_>>();
-		Ok(({ let r = result.pop().ok_or("Invalid return arity")?; let r = r.to_bool().ok_or("Invalid type returned")?; r }))
-	}
-
-	/// Auto-generated from: `{"constant":false,"inputs":[{"name":"_name","type":"string"},{"name":"_who","type":"address"}],"name":"proposeReverse","outputs":[{"name":"success","type":"bool"}],"payable":false,"type":"function"}`
-	#[allow(dead_code)]
-	pub fn propose_reverse(&self, _name: &str, _who: &util::Address) -> Result<bool, String>
-		 {
-		let call = self.contract.function("proposeReverse".into()).map_err(Self::as_string)?;
-		let data = call.encode_call(
-			vec![ethabi::Token::String(_name.to_owned()), ethabi::Token::Address(_who.clone().0)]
-		).map_err(Self::as_string)?;
-		let output = call.decode_output((self.do_call)(self.address.clone(), data)?).map_err(Self::as_string)?;
-		let mut result = output.into_iter().rev().collect::<Vec<_>>();
-		Ok(({ let r = result.pop().ok_or("Invalid return arity")?; let r = r.to_bool().ok_or("Invalid type returned")?; r }))
-	}
-
-	/// Auto-generated from: `{"constant":true,"inputs":[{"name":"_name","type":"bytes32"}],"name":"hasReverse","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"}`
-	#[allow(dead_code)]
-	pub fn has_reverse(&self, _name: &util::H256) -> Result<bool, String>
-		 {
-		let call = self.contract.function("hasReverse".into()).map_err(Self::as_string)?;
-		let data = call.encode_call(
-			vec![ethabi::Token::FixedBytes(_name.as_ref().to_owned())]
-		).map_err(Self::as_string)?;
-		let output = call.decode_output((self.do_call)(self.address.clone(), data)?).map_err(Self::as_string)?;
-		let mut result = output.into_iter().rev().collect::<Vec<_>>();
-		Ok(({ let r = result.pop().ok_or("Invalid return arity")?; let r = r.to_bool().ok_or("Invalid type returned")?; r }))
-	}
-
-	/// Auto-generated from: `{"constant":true,"inputs":[{"name":"_name","type":"bytes32"},{"name":"_key","type":"string"}],"name":"getUint","outputs":[{"name":"","type":"uint256"}],"payable":false,"type":"function"}`
-	#[allow(dead_code)]
-	pub fn get_uint(&self, _name: &util::H256, _key: &str) -> Result<util::U256, String>
-		 {
-		let call = self.contract.function("getUint".into()).map_err(Self::as_string)?;
-		let data = call.encode_call(
-			vec![ethabi::Token::FixedBytes(_name.as_ref().to_owned()), ethabi::Token::String(_key.to_owned())]
-		).map_err(Self::as_string)?;
-		let output = call.decode_output((self.do_call)(self.address.clone(), data)?).map_err(Self::as_string)?;
-		let mut result = output.into_iter().rev().collect::<Vec<_>>();
-		Ok(({ let r = result.pop().ok_or("Invalid return arity")?; let r = r.to_uint().ok_or("Invalid type returned")?; util::U256::from(r.as_ref()) }))
-	}
-
-	/// Auto-generated from: `{"constant":true,"inputs":[],"name":"fee","outputs":[{"name":"","type":"uint256"}],"payable":false,"type":"function"}`
-	#[allow(dead_code)]
-	pub fn fee(&self) -> Result<util::U256, String>
-		 {
-		let call = self.contract.function("fee".into()).map_err(Self::as_string)?;
-		let data = call.encode_call(
-			vec![]
-		).map_err(Self::as_string)?;
-		let output = call.decode_output((self.do_call)(self.address.clone(), data)?).map_err(Self::as_string)?;
-		let mut result = output.into_iter().rev().collect::<Vec<_>>();
-		Ok(({ let r = result.pop().ok_or("Invalid return arity")?; let r = r.to_uint().ok_or("Invalid type returned")?; util::U256::from(r.as_ref()) }))
-	}
-
-	/// Auto-generated from: `{"constant":true,"inputs":[{"name":"_name","type":"bytes32"}],"name":"getOwner","outputs":[{"name":"","type":"address"}],"payable":false,"type":"function"}`
-	#[allow(dead_code)]
-	pub fn get_owner(&self, _name: &util::H256) -> Result<util::Address, String>
-		 {
-		let call = self.contract.function("getOwner".into()).map_err(Self::as_string)?;
-		let data = call.encode_call(
-			vec![ethabi::Token::FixedBytes(_name.as_ref().to_owned())]
-		).map_err(Self::as_string)?;
-		let output = call.decode_output((self.do_call)(self.address.clone(), data)?).map_err(Self::as_string)?;
-		let mut result = output.into_iter().rev().collect::<Vec<_>>();
-		Ok(({ let r = result.pop().ok_or("Invalid return arity")?; let r = r.to_address().ok_or("Invalid type returned")?; util::Address::from(r) }))
-	}
-
-	/// Auto-generated from: `{"constant":true,"inputs":[{"name":"_name","type":"bytes32"}],"name":"getReverse","outputs":[{"name":"","type":"address"}],"payable":false,"type":"function"}`
-	#[allow(dead_code)]
-	pub fn get_reverse(&self, _name: &util::H256) -> Result<util::Address, String>
-		 {
-		let call = self.contract.function("getReverse".into()).map_err(Self::as_string)?;
-		let data = call.encode_call(
-			vec![ethabi::Token::FixedBytes(_name.as_ref().to_owned())]
-		).map_err(Self::as_string)?;
-		let output = call.decode_output((self.do_call)(self.address.clone(), data)?).map_err(Self::as_string)?;
-		let mut result = output.into_iter().rev().collect::<Vec<_>>();
-		Ok(({ let r = result.pop().ok_or("Invalid return arity")?; let r = r.to_address().ok_or("Invalid type returned")?; util::Address::from(r) }))
-	}
-
-	/// Auto-generated from: `{"constant":true,"inputs":[{"name":"_data","type":"address"}],"name":"reverse","outputs":[{"name":"","type":"string"}],"payable":false,"type":"function"}`
-	#[allow(dead_code)]
-	pub fn reverse(&self, _data: &util::Address) -> Result<String, String>
-		 {
-		let call = self.contract.function("reverse".into()).map_err(Self::as_string)?;
-		let data = call.encode_call(
-			vec![ethabi::Token::Address(_data.clone().0)]
-		).map_err(Self::as_string)?;
-		let output = call.decode_output((self.do_call)(self.address.clone(), data)?).map_err(Self::as_string)?;
-		let mut result = output.into_iter().rev().collect::<Vec<_>>();
-		Ok(({ let r = result.pop().ok_or("Invalid return arity")?; let r = r.to_string().ok_or("Invalid type returned")?; r }))
-	}
-
-	/// Auto-generated from: `{"constant":false,"inputs":[{"name":"_name","type":"bytes32"},{"name":"_key","type":"string"},{"name":"_value","type":"uint256"}],"name":"setUint","outputs":[{"name":"success","type":"bool"}],"payable":false,"type":"function"}`
-	#[allow(dead_code)]
-	pub fn set_uint(&self, _name: &util::H256, _key: &str, _value: util::U256) -> Result<bool, String>
-		 {
-		let call = self.contract.function("setUint".into()).map_err(Self::as_string)?;
-		let data = call.encode_call(
-			vec![ethabi::Token::FixedBytes(_name.as_ref().to_owned()), ethabi::Token::String(_key.to_owned()), ethabi::Token::Uint({ let mut r = [0u8; 32]; _value.to_big_endian(&mut r); r })]
-		).map_err(Self::as_string)?;
-		let output = call.decode_output((self.do_call)(self.address.clone(), data)?).map_err(Self::as_string)?;
-		let mut result = output.into_iter().rev().collect::<Vec<_>>();
-		Ok(({ let r = result.pop().ok_or("Invalid return arity")?; let r = r.to_bool().ok_or("Invalid type returned")?; r }))
-	}
-
-	/// Auto-generated from: `{"constant":false,"inputs":[{"name":"_name","type":"string"},{"name":"_who","type":"address"}],"name":"confirmReverseAs","outputs":[{"name":"success","type":"bool"}],"payable":false,"type":"function"}`
-	#[allow(dead_code)]
-	pub fn confirm_reverse_as(&self, _name: &str, _who: &util::Address) -> Result<bool, String>
-		 {
-		let call = self.contract.function("confirmReverseAs".into()).map_err(Self::as_string)?;
-		let data = call.encode_call(
-			vec![ethabi::Token::String(_name.to_owned()), ethabi::Token::Address(_who.clone().0)]
-		).map_err(Self::as_string)?;
-		let output = call.decode_output((self.do_call)(self.address.clone(), data)?).map_err(Self::as_string)?;
-		let mut result = output.into_iter().rev().collect::<Vec<_>>();
-		Ok(({ let r = result.pop().ok_or("Invalid return arity")?; let r = r.to_bool().ok_or("Invalid type returned")?; r }))
-	}
-
-	/// Auto-generated from: `{"constant":false,"inputs":[],"name":"removeReverse","outputs":[],"payable":false,"type":"function"}`
-	#[allow(dead_code)]
-	pub fn remove_reverse(&self) -> Result<(), String>
-		 {
-		let call = self.contract.function("removeReverse".into()).map_err(Self::as_string)?;
-		let data = call.encode_call(
-			vec![]
-		).map_err(Self::as_string)?;
-		call.decode_output((self.do_call)(self.address.clone(), data)?).map_err(Self::as_string)?;
-
-		Ok(())
-	}
-
-	/// Auto-generated from: `{"constant":false,"inputs":[{"name":"_name","type":"bytes32"},{"name":"_key","type":"string"},{"name":"_value","type":"address"}],"name":"setAddress","outputs":[{"name":"success","type":"bool"}],"payable":false,"type":"function"}`
-	#[allow(dead_code)]
-	pub fn set_address(&self, _name: &util::H256, _key: &str, _value: &util::Address) -> Result<bool, String>
-		 {
-		let call = self.contract.function("setAddress".into()).map_err(Self::as_string)?;
-		let data = call.encode_call(
-			vec![ethabi::Token::FixedBytes(_name.as_ref().to_owned()), ethabi::Token::String(_key.to_owned()), ethabi::Token::Address(_value.clone().0)]
-		).map_err(Self::as_string)?;
-		let output = call.decode_output((self.do_call)(self.address.clone(), data)?).map_err(Self::as_string)?;
-		let mut result = output.into_iter().rev().collect::<Vec<_>>();
-		Ok(({ let r = result.pop().ok_or("Invalid return arity")?; let r = r.to_bool().ok_or("Invalid type returned")?; r }))
-	}
-}
-

ethcore/src/lib.rs

@@ -79,37 +79,39 @@
 //!   cargo build --release
 //!   ```
 
-extern crate ethcore_io as io;
-extern crate rustc_serialize;
-extern crate crypto;
-extern crate time;
-extern crate env_logger;
-extern crate num_cpus;
-extern crate crossbeam;
-extern crate ethjson;
-extern crate bloomchain;
-extern crate hyper;
-extern crate ethash;
-extern crate ethkey;
-extern crate semver;
-extern crate ethcore_ipc_nano as nanoipc;
-extern crate ethcore_devtools as devtools;
-extern crate rand;
 extern crate bit_set;
-extern crate rlp;
+extern crate bloomchain;
-extern crate ethcore_bloom_journal as bloom_journal;
+extern crate bn;
 extern crate byteorder;
-extern crate transient_hashmap;
+extern crate crossbeam;
+extern crate crypto;
+extern crate env_logger;
+extern crate ethabi;
+extern crate ethash;
+extern crate ethcore_bloom_journal as bloom_journal;
+extern crate ethcore_devtools as devtools;
+extern crate ethcore_io as io;
+extern crate ethcore_ipc_nano as nanoipc;
+extern crate ethcore_logger;
+extern crate ethcore_stratum;
+extern crate ethjson;
+extern crate ethkey;
+extern crate futures;
+extern crate hardware_wallet;
+extern crate hyper;
+extern crate itertools;
 extern crate linked_hash_map;
 extern crate lru_cache;
-extern crate ethcore_stratum;
+extern crate native_contracts;
-extern crate ethabi;
+extern crate num_cpus;
-extern crate hardware_wallet;
-extern crate stats;
-extern crate ethcore_logger;
 extern crate num;
-extern crate bn;
+extern crate rand;
-extern crate itertools;
+extern crate rlp;
+extern crate rustc_serialize;
+extern crate semver;
+extern crate stats;
+extern crate time;
+extern crate transient_hashmap;
 
 #[macro_use]
 extern crate log;

ethcore/src/miner/service_transaction_checker.rs

@@ -14,9 +14,12 @@
 // You should have received a copy of the GNU General Public License
 // along with Parity. If not, see <http://www.gnu.org/licenses/>.
 
-use types::ids::BlockId;
 use client::MiningBlockChainClient;
 use transaction::SignedTransaction;
+use types::ids::BlockId;
+
+use futures::{future, Future};
+use native_contracts::ServiceTransactionChecker as Contract;
 use util::{U256, Uint, Mutex};
 
 const SERVICE_TRANSACTION_CONTRACT_REGISTRY_NAME: &'static str = "service_transaction_checker";
@@ -24,7 +27,7 @@ const SERVICE_TRANSACTION_CONTRACT_REGISTRY_NAME: &'static str = "service_transa
 /// Service transactions checker.
 #[derive(Default)]
 pub struct ServiceTransactionChecker {
-	contract: Mutex<Option<provider::Contract>>,
+	contract: Mutex<Option<Contract>>,
 }
 
 impl ServiceTransactionChecker {
@@ -36,7 +39,7 @@ impl ServiceTransactionChecker {
 				.and_then(|contract_addr| {
 					trace!(target: "txqueue", "Configuring for service transaction checker contract from {}", contract_addr);
 
-					Some(provider::Contract::new(contract_addr))
+					Some(Contract::new(contract_addr))
 				})
 		}
 	}
@@ -46,168 +49,12 @@ impl ServiceTransactionChecker {
 		debug_assert_eq!(tx.gas_price, U256::zero());
 
 		if let Some(ref contract) = *self.contract.lock() {
-			let do_call = |a, d| client.call_contract(BlockId::Latest, a, d);
+			contract.certified(
-			contract.certified(&do_call, &tx.sender())
+				|addr, data| future::done(client.call_contract(BlockId::Latest, addr, data)),
+				tx.sender()
+			).wait()
 		} else {
 			Err("contract is not configured".to_owned())
 		}
 	}
 }
-
-mod provider {
-	// Autogenerated from JSON contract definition using Rust contract convertor.
-	// Command line: --jsonabi=SimpleCertifier.abi --explicit-do-call
-	#![allow(unused_imports)]
-	use std::string::String;
-	use std::result::Result;
-	use std::fmt;
-	use {util, ethabi};
-	use util::{Uint};
-
-	pub struct Contract {
-		contract: ethabi::Contract,
-		address: util::Address,
-
-	}
-	impl Contract {
-		pub fn new(address: util::Address) -> Self
-			{
-			Contract {
-				contract: ethabi::Contract::new(ethabi::Interface::load(b"[{\"constant\":false,\"inputs\":[{\"name\":\"_new\",\"type\":\"address\"}],\"name\":\"setOwner\",\"outputs\":[],\"payable\":false,\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"name\":\"_who\",\"type\":\"address\"}],\"name\":\"certify\",\"outputs\":[],\"payable\":false,\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"_who\",\"type\":\"address\"},{\"name\":\"_field\",\"type\":\"string\"}],\"name\":\"getAddress\",\"outputs\":[{\"name\":\"\",\"type\":\"address\"}],\"payable\":false,\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"name\":\"_who\",\"type\":\"address\"}],\"name\":\"revoke\",\"outputs\":[],\"payable\":false,\"type\":\"function\"},{\"constant\":true,\"inputs\":[],\"name\":\"owner\",\"outputs\":[{\"name\":\"\",\"type\":\"address\"}],\"payable\":false,\"type\":\"function\"},{\"constant\":true,\"inputs\":[],\"name\":\"delegate\",\"outputs\":[{\"name\":\"\",\"type\":\"address\"}],\"payable\":false,\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"_who\",\"type\":\"address\"},{\"name\":\"_field\",\"type\":\"string\"}],\"name\":\"getUint\",\"outputs\":[{\"name\":\"\",\"type\":\"uint256\"}],\"payable\":false,\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"name\":\"_new\",\"type\":\"address\"}],\"name\":\"setDelegate\",\"outputs\":[],\"payable\":false,\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"_who\",\"type\":\"address\"}],\"name\":\"certified\",\"outputs\":[{\"name\":\"\",\"type\":\"bool\"}],\"payable\":false,\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"_who\",\"type\":\"address\"},{\"name\":\"_field\",\"type\":\"string\"}],\"name\":\"get\",\"outputs\":[{\"name\":\"\",\"type\":\"bytes32\"}],\"payable\":false,\"type\":\"function\"}]").expect("JSON is autogenerated; qed")),
-				address: address,
-
-			}
-		}
-		fn as_string<T: fmt::Debug>(e: T) -> String { format!("{:?}", e) }
-
-		/// Auto-generated from: `{"constant":false,"inputs":[{"name":"_new","type":"address"}],"name":"setOwner","outputs":[],"payable":false,"type":"function"}`
-		#[allow(dead_code)]
-		pub fn set_owner<F>(&self, do_call: &F, _new: &util::Address) -> Result<(), String>
-			where F: Fn(util::Address, Vec<u8>) -> Result<Vec<u8>, String> + Send  {
-			let call = self.contract.function("setOwner".into()).map_err(Self::as_string)?;
-			let data = call.encode_call(
-				vec![ethabi::Token::Address(_new.clone().0)]
-			).map_err(Self::as_string)?;
-			call.decode_output((do_call)(self.address.clone(), data)?).map_err(Self::as_string)?;
-
-			Ok(())
-		}
-
-		/// Auto-generated from: `{"constant":false,"inputs":[{"name":"_who","type":"address"}],"name":"certify","outputs":[],"payable":false,"type":"function"}`
-		#[allow(dead_code)]
-		pub fn certify<F>(&self, do_call: &F, _who: &util::Address) -> Result<(), String>
-			where F: Fn(util::Address, Vec<u8>) -> Result<Vec<u8>, String> + Send  {
-			let call = self.contract.function("certify".into()).map_err(Self::as_string)?;
-			let data = call.encode_call(
-				vec![ethabi::Token::Address(_who.clone().0)]
-			).map_err(Self::as_string)?;
-			call.decode_output((do_call)(self.address.clone(), data)?).map_err(Self::as_string)?;
-
-			Ok(())
-		}
-
-		/// Auto-generated from: `{"constant":true,"inputs":[{"name":"_who","type":"address"},{"name":"_field","type":"string"}],"name":"getAddress","outputs":[{"name":"","type":"address"}],"payable":false,"type":"function"}`
-		#[allow(dead_code)]
-		pub fn get_address<F>(&self, do_call: &F, _who: &util::Address, _field: &str) -> Result<util::Address, String>
-			where F: Fn(util::Address, Vec<u8>) -> Result<Vec<u8>, String> + Send  {
-			let call = self.contract.function("getAddress".into()).map_err(Self::as_string)?;
-			let data = call.encode_call(
-				vec![ethabi::Token::Address(_who.clone().0), ethabi::Token::String(_field.to_owned())]
-			).map_err(Self::as_string)?;
-			let output = call.decode_output((do_call)(self.address.clone(), data)?).map_err(Self::as_string)?;
-			let mut result = output.into_iter().rev().collect::<Vec<_>>();
-			Ok(({ let r = result.pop().ok_or("Invalid return arity")?; let r = r.to_address().ok_or("Invalid type returned")?; util::Address::from(r) }))
-		}
-
-		/// Auto-generated from: `{"constant":false,"inputs":[{"name":"_who","type":"address"}],"name":"revoke","outputs":[],"payable":false,"type":"function"}`
-		#[allow(dead_code)]
-		pub fn revoke<F>(&self, do_call: &F, _who: &util::Address) -> Result<(), String>
-			where F: Fn(util::Address, Vec<u8>) -> Result<Vec<u8>, String> + Send  {
-			let call = self.contract.function("revoke".into()).map_err(Self::as_string)?;
-			let data = call.encode_call(
-				vec![ethabi::Token::Address(_who.clone().0)]
-			).map_err(Self::as_string)?;
-			call.decode_output((do_call)(self.address.clone(), data)?).map_err(Self::as_string)?;
-
-			Ok(())
-		}
-
-		/// Auto-generated from: `{"constant":true,"inputs":[],"name":"owner","outputs":[{"name":"","type":"address"}],"payable":false,"type":"function"}`
-		#[allow(dead_code)]
-		pub fn owner<F>(&self, do_call: &F) -> Result<util::Address, String>
-			where F: Fn(util::Address, Vec<u8>) -> Result<Vec<u8>, String> + Send  {
-			let call = self.contract.function("owner".into()).map_err(Self::as_string)?;
-			let data = call.encode_call(
-				vec![]
-			).map_err(Self::as_string)?;
-			let output = call.decode_output((do_call)(self.address.clone(), data)?).map_err(Self::as_string)?;
-			let mut result = output.into_iter().rev().collect::<Vec<_>>();
-			Ok(({ let r = result.pop().ok_or("Invalid return arity")?; let r = r.to_address().ok_or("Invalid type returned")?; util::Address::from(r) }))
-		}
-
-		/// Auto-generated from: `{"constant":true,"inputs":[],"name":"delegate","outputs":[{"name":"","type":"address"}],"payable":false,"type":"function"}`
-		#[allow(dead_code)]
-		pub fn delegate<F>(&self, do_call: &F) -> Result<util::Address, String>
-			where F: Fn(util::Address, Vec<u8>) -> Result<Vec<u8>, String> + Send  {
-			let call = self.contract.function("delegate".into()).map_err(Self::as_string)?;
-			let data = call.encode_call(
-				vec![]
-			).map_err(Self::as_string)?;
-			let output = call.decode_output((do_call)(self.address.clone(), data)?).map_err(Self::as_string)?;
-			let mut result = output.into_iter().rev().collect::<Vec<_>>();
-			Ok(({ let r = result.pop().ok_or("Invalid return arity")?; let r = r.to_address().ok_or("Invalid type returned")?; util::Address::from(r) }))
-		}
-
-		/// Auto-generated from: `{"constant":true,"inputs":[{"name":"_who","type":"address"},{"name":"_field","type":"string"}],"name":"getUint","outputs":[{"name":"","type":"uint256"}],"payable":false,"type":"function"}`
-		#[allow(dead_code)]
-		pub fn get_uint<F>(&self, do_call: &F, _who: &util::Address, _field: &str) -> Result<util::U256, String>
-			where F: Fn(util::Address, Vec<u8>) -> Result<Vec<u8>, String> + Send  {
-			let call = self.contract.function("getUint".into()).map_err(Self::as_string)?;
-			let data = call.encode_call(
-				vec![ethabi::Token::Address(_who.clone().0), ethabi::Token::String(_field.to_owned())]
-			).map_err(Self::as_string)?;
-			let output = call.decode_output((do_call)(self.address.clone(), data)?).map_err(Self::as_string)?;
-			let mut result = output.into_iter().rev().collect::<Vec<_>>();
-			Ok(({ let r = result.pop().ok_or("Invalid return arity")?; let r = r.to_uint().ok_or("Invalid type returned")?; util::U256::from(r.as_ref()) }))
-		}
-
-		/// Auto-generated from: `{"constant":false,"inputs":[{"name":"_new","type":"address"}],"name":"setDelegate","outputs":[],"payable":false,"type":"function"}`
-		#[allow(dead_code)]
-		pub fn set_delegate<F>(&self, do_call: &F, _new: &util::Address) -> Result<(), String>
-			where F: Fn(util::Address, Vec<u8>) -> Result<Vec<u8>, String> + Send  {
-			let call = self.contract.function("setDelegate".into()).map_err(Self::as_string)?;
-			let data = call.encode_call(
-				vec![ethabi::Token::Address(_new.clone().0)]
-			).map_err(Self::as_string)?;
-			call.decode_output((do_call)(self.address.clone(), data)?).map_err(Self::as_string)?;
-
-			Ok(())
-		}
-
-		/// Auto-generated from: `{"constant":true,"inputs":[{"name":"_who","type":"address"}],"name":"certified","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"}`
-		#[allow(dead_code)]
-		pub fn certified<F>(&self, do_call: &F, _who: &util::Address) -> Result<bool, String>
-			where F: Fn(util::Address, Vec<u8>) -> Result<Vec<u8>, String> + Send  {
-			let call = self.contract.function("certified".into()).map_err(Self::as_string)?;
-			let data = call.encode_call(
-				vec![ethabi::Token::Address(_who.clone().0)]
-			).map_err(Self::as_string)?;
-			let output = call.decode_output((do_call)(self.address.clone(), data)?).map_err(Self::as_string)?;
-			let mut result = output.into_iter().rev().collect::<Vec<_>>();
-			Ok(({ let r = result.pop().ok_or("Invalid return arity")?; let r = r.to_bool().ok_or("Invalid type returned")?; r }))
-		}
-
-		/// Auto-generated from: `{"constant":true,"inputs":[{"name":"_who","type":"address"},{"name":"_field","type":"string"}],"name":"get","outputs":[{"name":"","type":"bytes32"}],"payable":false,"type":"function"}`
-		#[allow(dead_code)]
-		pub fn get<F>(&self, do_call: &F, _who: &util::Address, _field: &str) -> Result<util::H256, String>
-			where F: Fn(util::Address, Vec<u8>) -> Result<Vec<u8>, String> + Send  {
-			let call = self.contract.function("get".into()).map_err(Self::as_string)?;
-			let data = call.encode_call(
-				vec![ethabi::Token::Address(_who.clone().0), ethabi::Token::String(_field.to_owned())]
-			).map_err(Self::as_string)?;
-			let output = call.decode_output((do_call)(self.address.clone(), data)?).map_err(Self::as_string)?;
-			let mut result = output.into_iter().rev().collect::<Vec<_>>();
-			Ok(({ let r = result.pop().ok_or("Invalid return arity")?; let r = r.to_fixed_bytes().ok_or("Invalid type returned")?; util::H256::from_slice(r.as_ref()) }))
-		}
-	}
-}

ethcrypto/src/lib.rs

@@ -78,6 +78,12 @@ impl fmt::Display for Error {
 	}
 }
 
+impl Into<String> for Error {
+	fn into(self) -> String {
+		format!("{}", self)
+	}
+}
+
 impl From<SecpError> for Error {
 	fn from(e: SecpError) -> Self {
 		Error::Secp(e)

ethkey/src/keypair.rs

@@ -27,6 +27,7 @@ pub fn public_to_address(public: &Public) -> Address {
 	result
 }
 
+#[derive(Clone)]
 /// secp256k1 key pair
 pub struct KeyPair {
 	secret: Secret,

hash-fetch/src/urlhint.rs

@@ -92,12 +92,13 @@ pub enum URLHintResult {
 }
 
 /// URLHint Contract interface
-pub trait URLHint {
+pub trait URLHint: Send + Sync {
 	/// Resolves given id to registrar entry.
 	fn resolve(&self, id: Bytes) -> Option<URLHintResult>;
 }
 
 /// `URLHintContract` API
+#[derive(Clone)]
 pub struct URLHintContract {
 	urlhint: Contract,
 	registrar: Contract,

ipfs/src/lib.rs

@@ -32,12 +32,13 @@ use std::sync::Arc;
 use std::net::{SocketAddr, IpAddr};
 use error::ServerError;
 use route::Out;
-use http::hyper::server::{Listening, Handler, Request, Response};
+use http::hyper::server::{Handler, Request, Response};
 use http::hyper::net::HttpStream;
 use http::hyper::header::{self, Vary, ContentLength, ContentType};
 use http::hyper::{Next, Encoder, Decoder, Method, RequestUri, StatusCode};
 use ethcore::client::BlockChainClient;
 
+pub use http::hyper::server::Listening;
 pub use http::{AccessControlAllowOrigin, Host, DomainsValidation};
 
 /// Request/response handler

js/scripts/test.js

@@ -1,2 +1 @@
-// test script 9
+// test script 10
-// trigger rebuild on master 15 Mar 2017, 11:19

parity/cli/mod.rs

@@ -167,6 +167,8 @@ usage! {
 			or |c: &Config| otry!(c.rpc).apis.as_ref().map(|vec| vec.join(",")),
 		flag_jsonrpc_hosts: String = "none",
 			or |c: &Config| otry!(c.rpc).hosts.as_ref().map(|vec| vec.join(",")),
+		flag_jsonrpc_threads: Option<usize> = None,
+			or |c: &Config| otry!(c.rpc).threads.map(Some),
 
 		// IPC
 		flag_no_ipc: bool = false,
@@ -179,21 +181,8 @@ usage! {
 		// DAPPS
 		flag_no_dapps: bool = false,
 			or |c: &Config| otry!(c.dapps).disable.clone(),
-		flag_dapps_port: u16 = 8080u16,
-			or |c: &Config| otry!(c.dapps).port.clone(),
-		flag_dapps_interface: String = "local",
-			or |c: &Config| otry!(c.dapps).interface.clone(),
-		flag_dapps_hosts: String = "none",
-			or |c: &Config| otry!(c.dapps).hosts.as_ref().map(|vec| vec.join(",")),
-		flag_dapps_cors: Option<String> = None,
-			or |c: &Config| otry!(c.dapps).cors.clone().map(Some),
 		flag_dapps_path: String = "$BASE/dapps",
 			or |c: &Config| otry!(c.dapps).path.clone(),
-		flag_dapps_user: Option<String> = None,
-			or |c: &Config| otry!(c.dapps).user.clone().map(Some),
-		flag_dapps_pass: Option<String> = None,
-			or |c: &Config| otry!(c.dapps).pass.clone().map(Some),
-		flag_dapps_apis_all: bool = false, or |_| None,
 
 		// Secret Store
 		flag_no_secretstore: bool = false,
@@ -333,6 +322,22 @@ usage! {
 			or |c: &Config| otry!(c.misc).log_file.clone().map(Some),
 		flag_no_color: bool = false,
 			or |c: &Config| otry!(c.misc).color.map(|c| !c).clone(),
+
+
+		// -- Legacy Options supported in configs
+		flag_dapps_port: Option<u16> = None,
+			or |c: &Config| otry!(c.dapps).port.clone().map(Some),
+		flag_dapps_interface: Option<String> = None,
+			or |c: &Config| otry!(c.dapps).interface.clone().map(Some),
+		flag_dapps_hosts: Option<String> = None,
+			or |c: &Config| otry!(c.dapps).hosts.as_ref().map(|vec| Some(vec.join(","))),
+		flag_dapps_cors: Option<String> = None,
+			or |c: &Config| otry!(c.dapps).cors.clone().map(Some),
+		flag_dapps_user: Option<String> = None,
+			or |c: &Config| otry!(c.dapps).user.clone().map(Some),
+		flag_dapps_pass: Option<String> = None,
+			or |c: &Config| otry!(c.dapps).pass.clone().map(Some),
+		flag_dapps_apis_all: Option<bool> = None, or |_| None,
 	}
 	{
 		// Values with optional default value.
@@ -424,6 +429,7 @@ struct Rpc {
 	cors: Option<String>,
 	apis: Option<Vec<String>>,
 	hosts: Option<Vec<String>>,
+	threads: Option<usize>,
 }
 
 #[derive(Default, Debug, PartialEq, RustcDecodable)]
@@ -679,6 +685,7 @@ mod tests {
 			flag_jsonrpc_cors: Some("null".into()),
 			flag_jsonrpc_apis: "web3,eth,net,parity,traces,rpc".into(),
 			flag_jsonrpc_hosts: "none".into(),
+			flag_jsonrpc_threads: None,
 
 			// IPC
 			flag_no_ipc: false,
@@ -686,15 +693,8 @@ mod tests {
 			flag_ipc_apis: "web3,eth,net,parity,parity_accounts,personal,traces,rpc".into(),
 
 			// DAPPS
-			flag_no_dapps: false,
-			flag_dapps_port: 8080u16,
-			flag_dapps_interface: "local".into(),
-			flag_dapps_hosts: "none".into(),
-			flag_dapps_cors: None,
 			flag_dapps_path: "$HOME/.parity/dapps".into(),
-			flag_dapps_user: Some("test_user".into()),
+			flag_no_dapps: false,
-			flag_dapps_pass: Some("test_pass".into()),
-			flag_dapps_apis_all: false,
 
 			flag_no_secretstore: false,
 			flag_secretstore_port: 8082u16,
@@ -799,6 +799,14 @@ mod tests {
 			flag_extradata: None,
 			flag_cache: None,
 			flag_warp: Some(true),
+			// Legacy-Dapps
+			flag_dapps_port: Some(8080),
+			flag_dapps_interface: Some("local".into()),
+			flag_dapps_hosts: Some("none".into()),
+			flag_dapps_cors: None,
+			flag_dapps_user: Some("test_user".into()),
+			flag_dapps_pass: Some("test_pass".into()),
+			flag_dapps_apis_all: None,
 
 			// -- Miscellaneous Options
 			flag_version: false,
@@ -882,6 +890,7 @@ mod tests {
 				cors: None,
 				apis: None,
 				hosts: None,
+				threads: None,
 			}),
 			ipc: Some(Ipc {
 				disable: None,

parity/cli/usage.txt

@@ -74,7 +74,7 @@ Operating Options:
                                  synchronize a bare minimum of data and fetch necessary
                                  data on-demand from the network. Much lower in storage,
                                  potentially higher in bandwidth. Has no effect with
-								 subcommands (default: {flag_light})
+                                 subcommands (default: {flag_light}).
 
 Account Options:
   --unlock ACCOUNTS              Unlock ACCOUNTS for the duration of the execution.
@@ -155,6 +155,8 @@ API and Console Options:
                                  is additional security against some attack
                                  vectors. Special options: "all", "none",
                                  (default: {flag_jsonrpc_hosts}).
+  --jsonrpc-threads THREADS      Enables experimental faster implementation of JSON-RPC server.
+                                 Requires Dapps server to be disabled using --no-dapps. (default: {flag_jsonrpc_threads:?})
 
   --no-ipc                       Disable JSON-RPC over IPC service. (default: {flag_no_ipc})
   --ipc-path PATH                Specify custom path for JSON-RPC over IPC service
@@ -163,29 +165,8 @@ API and Console Options:
                                  IPC (default: {flag_ipc_apis}).
 
   --no-dapps                     Disable the Dapps server (e.g. status page). (default: {flag_no_dapps})
-  --dapps-port PORT              Specify the port portion of the Dapps server
-                                 (default: {flag_dapps_port}).
-  --dapps-interface IP           Specify the hostname portion of the Dapps
-                                 server, IP should be an interface's IP address,
-                                 or local (default: {flag_dapps_interface}).
-  --dapps-hosts HOSTS            List of allowed Host header values. This option will
-                                 validate the Host header sent by the browser, it
-                                 is additional security against some attack
-                                 vectors. Special options: "all", "none",
-                                 (default: {flag_dapps_hosts}).
-  --dapps-cors URL               Specify CORS headers for Dapps server APIs.
-                                 (default: {flag_dapps_cors:?})
-  --dapps-user USERNAME          Specify username for Dapps server. It will be
-                                 used in HTTP Basic Authentication Scheme.
-                                 If --dapps-pass is not specified you will be
-                                 asked for password on startup. (default: {flag_dapps_user:?})
-  --dapps-pass PASSWORD          Specify password for Dapps server. Use only in
-                                 conjunction with --dapps-user. (default: {flag_dapps_pass:?})
   --dapps-path PATH              Specify directory where dapps should be installed.
                                  (default: {flag_dapps_path})
-  --dapps-apis-all               Expose all possible RPC APIs on Dapps port.
-                                 WARNING: INSECURE. Used only for development.
-                                 (default: {flag_dapps_apis_all})
   --ipfs-api                     Enable IPFS-compatible HTTP API. (default: {flag_ipfs_api})
   --ipfs-api-port PORT           Configure on which port the IPFS HTTP API should listen.
                                  (default: {flag_ipfs_api_port})
@@ -398,6 +379,13 @@ Legacy Options:
   --jsonrpc-off                  Equivalent to --no-jsonrpc.
   -w --webapp                    Does nothing; dapps server is on by default now.
   --dapps-off                    Equivalent to --no-dapps.
+  --dapps-user USERNAME          Dapps server authentication has been removed. (default: {flag_dapps_user:?})
+  --dapps-pass PASSWORD          Dapps server authentication has been removed. (default: {flag_dapps_pass:?})
+  --dapps-apis-all               Dapps server is merged with RPC server. Use --jsonrpc-apis. (default: {flag_dapps_apis_all:?})
+  --dapps-cors URL               Dapps server is merged with RPC server. Use --jsonrpc-cors. (default: {flag_dapps_cors:?})
+  --dapps-hosts HOSTS            Dapps server is merged with RPC server. Use --jsonrpc-hosts. (default: {flag_dapps_hosts:?})
+  --dapps-interface IP           Dapps server is merged with RPC server. Use --jsonrpc-interface. (default: {flag_dapps_interface:?})
+  --dapps-port PORT              Dapps server is merged with RPC server. Use --jsonrpc-port. (default: {flag_dapps_port:?})
   --rpc                          Does nothing; JSON-RPC is on by default now.
   --warp                         Does nothing; Warp sync is on by default. (default: {flag_warp})
   --rpcaddr IP                   Equivalent to --jsonrpc-interface IP.

parity/configuration.rs

@@ -132,12 +132,17 @@ impl Configuration {
 		let warp_sync = !self.args.flag_no_warp && fat_db != Switch::On && tracing != Switch::On && pruning != Pruning::Specific(Algorithm::Archive);
 		let geth_compatibility = self.args.flag_geth;
 		let ui_address = self.ui_port().map(|port| (self.ui_interface(), port));
-		let dapps_conf = self.dapps_config();
+		let mut dapps_conf = self.dapps_config();
 		let ipfs_conf = self.ipfs_config();
 		let signer_conf = self.signer_config();
 		let secretstore_conf = self.secretstore_config();
 		let format = self.format()?;
 
+		if self.args.flag_jsonrpc_threads.is_some() && dapps_conf.enabled {
+			dapps_conf.enabled = false;
+			writeln!(&mut stderr(), "Warning: Disabling Dapps server because fast RPC server was enabled.").expect("Error writing to stderr.")
+		}
+
 		let cmd = if self.args.flag_version {
 			Cmd::Version
 		} else if self.args.cmd_signer {
@@ -556,19 +561,12 @@ impl Configuration {
 	fn dapps_config(&self) -> DappsConfiguration {
 		DappsConfiguration {
 			enabled: self.dapps_enabled(),
-			interface: self.dapps_interface(),
-			port: self.args.flag_dapps_port,
-			hosts: self.dapps_hosts(),
-			cors: self.dapps_cors(),
-			user: self.args.flag_dapps_user.clone(),
-			pass: self.args.flag_dapps_pass.clone(),
 			dapps_path: PathBuf::from(self.directories().dapps),
 			extra_dapps: if self.args.cmd_dapp {
 				self.args.arg_path.iter().map(|path| PathBuf::from(path)).collect()
 			} else {
 				vec![]
 			},
-			all_apis: self.args.flag_dapps_apis_all,
 		}
 	}
 
@@ -748,14 +746,10 @@ impl Configuration {
 		Self::cors(self.args.flag_ipfs_api_cors.as_ref())
 	}
 
-	fn dapps_cors(&self) -> Option<Vec<String>> {
-		Self::cors(self.args.flag_dapps_cors.as_ref())
-	}
-
 	fn hosts(hosts: &str) -> Option<Vec<String>> {
 		match hosts {
 			"none" => return Some(Vec::new()),
-			"all" => return None,
+			"*" | "all" | "any" => return None,
 			_ => {}
 		}
 		let hosts = hosts.split(',').map(Into::into).collect();
@@ -766,10 +760,6 @@ impl Configuration {
 		Self::hosts(&self.args.flag_jsonrpc_hosts)
 	}
 
-	fn dapps_hosts(&self) -> Option<Vec<String>> {
-		Self::hosts(&self.args.flag_dapps_hosts)
-	}
-
 	fn ipfs_hosts(&self) -> Option<Vec<String>> {
 		Self::hosts(&self.args.flag_ipfs_api_hosts)
 	}
@@ -795,12 +785,17 @@ impl Configuration {
 
 	fn http_config(&self) -> Result<HttpConfiguration, String> {
 		let conf = HttpConfiguration {
-			enabled: !self.args.flag_jsonrpc_off && !self.args.flag_no_jsonrpc,
+			enabled: self.rpc_enabled(),
 			interface: self.rpc_interface(),
 			port: self.args.flag_rpcport.unwrap_or(self.args.flag_jsonrpc_port),
 			apis: self.rpc_apis().parse()?,
 			hosts: self.rpc_hosts(),
 			cors: self.rpc_cors(),
+			threads: match self.args.flag_jsonrpc_threads {
+				Some(threads) if threads > 0 => Some(threads),
+				None => None,
+				_ => return Err("--jsonrpc-threads number needs to be positive.".into()),
+			}
 		};
 
 		Ok(conf)
@@ -811,7 +806,7 @@ impl Configuration {
 			name: self.args.flag_identity.clone(),
 			chain: self.chain(),
 			network_port: self.args.flag_port,
-			rpc_enabled: !self.args.flag_jsonrpc_off && !self.args.flag_no_jsonrpc,
+			rpc_enabled: self.rpc_enabled(),
 			rpc_interface: self.args.flag_rpcaddr.clone().unwrap_or(self.args.flag_jsonrpc_interface.clone()),
 			rpc_port: self.args.flag_rpcport.unwrap_or(self.args.flag_jsonrpc_port),
 		}
@@ -918,13 +913,6 @@ impl Configuration {
 		Self::interface(&self.network_settings().rpc_interface)
 	}
 
-	fn dapps_interface(&self) -> String {
-		match self.args.flag_dapps_interface.as_str() {
-			"local" => "127.0.0.1",
-			x => x,
-		}.into()
-	}
-
 	fn ipfs_interface(&self) -> String {
 		Self::interface(&self.args.flag_ipfs_api_interface)
 	}
@@ -940,8 +928,12 @@ impl Configuration {
 		Self::interface(&self.args.flag_stratum_interface)
 	}
 
+	fn rpc_enabled(&self) -> bool {
+		!self.args.flag_jsonrpc_off && !self.args.flag_no_jsonrpc
+	}
+
 	fn dapps_enabled(&self) -> bool {
-		!self.args.flag_dapps_off && !self.args.flag_no_dapps && cfg!(feature = "dapps")
+		!self.args.flag_dapps_off && !self.args.flag_no_dapps && self.rpc_enabled() && cfg!(feature = "dapps")
 	}
 
 	fn secretstore_enabled(&self) -> bool {
@@ -1321,23 +1313,6 @@ mod tests {
 		assert_eq!(conf3.rpc_hosts(), Some(vec!["ethcore.io".into(), "something.io".into()]));
 	}
 
-	#[test]
-	fn should_parse_dapps_hosts() {
-		// given
-
-		// when
-		let conf0 = parse(&["parity"]);
-		let conf1 = parse(&["parity", "--dapps-hosts", "none"]);
-		let conf2 = parse(&["parity", "--dapps-hosts", "all"]);
-		let conf3 = parse(&["parity", "--dapps-hosts", "ethcore.io,something.io"]);
-
-		// then
-		assert_eq!(conf0.dapps_hosts(), Some(Vec::new()));
-		assert_eq!(conf1.dapps_hosts(), Some(Vec::new()));
-		assert_eq!(conf2.dapps_hosts(), None);
-		assert_eq!(conf3.dapps_hosts(), Some(vec!["ethcore.io".into(), "something.io".into()]));
-	}
-
 	#[test]
 	fn should_parse_ipfs_hosts() {
 		// given

parity/dapps.rs

@@ -20,26 +20,18 @@ use std::sync::Arc;
 use dir::default_data_path;
 use ethcore::client::{Client, BlockChainClient, BlockId};
 use ethcore::transaction::{Transaction, Action};
-use ethcore_rpc::informant::RpcStats;
 use hash_fetch::fetch::Client as FetchClient;
 use hash_fetch::urlhint::ContractClient;
 use helpers::replace_home;
-use rpc_apis::{self, SignerService};
+use rpc_apis::SignerService;
 use parity_reactor;
 use util::{Bytes, Address, U256};
 
 #[derive(Debug, PartialEq, Clone)]
 pub struct Configuration {
 	pub enabled: bool,
-	pub interface: String,
-	pub port: u16,
-	pub hosts: Option<Vec<String>>,
-	pub cors: Option<Vec<String>>,
-	pub user: Option<String>,
-	pub pass: Option<String>,
 	pub dapps_path: PathBuf,
 	pub extra_dapps: Vec<PathBuf>,
-	pub all_apis: bool,
 }
 
 impl Default for Configuration {
@@ -47,15 +39,8 @@ impl Default for Configuration {
 		let data_dir = default_data_path();
 		Configuration {
 			enabled: true,
-			interface: "127.0.0.1".into(),
-			port: 8080,
-			hosts: Some(Vec::new()),
-			cors: None,
-			user: None,
-			pass: None,
 			dapps_path: replace_home(&data_dir, "$BASE/dapps").into(),
 			extra_dapps: vec![],
-			all_apis: false,
 		}
 	}
 }
@@ -96,70 +81,52 @@ impl ContractClient for FullRegistrar {
 
 // TODO: light client implementation forwarding to OnDemand and waiting for future
 // to resolve.
-
+pub struct Dependencies {
-pub struct Dependencies<D: rpc_apis::Dependencies> {
+	pub sync_status: Arc<::parity_dapps::SyncStatus>,
-	pub apis: Arc<D>,
-	pub sync_status: Arc<::ethcore_dapps::SyncStatus>,
 	pub contract_client: Arc<ContractClient>,
 	pub remote: parity_reactor::TokioRemote,
 	pub fetch: FetchClient,
 	pub signer: Arc<SignerService>,
-	pub stats: Arc<RpcStats>,
 }
 
-pub fn new<D>(configuration: Configuration, deps: Dependencies<D>) -> Result<Option<WebappServer>, String>
+pub fn new(configuration: Configuration, deps: Dependencies)
-	where D: rpc_apis::Dependencies
+	-> Result<Option<Middleware>, String>
 {
 	if !configuration.enabled {
 		return Ok(None);
 	}
 
-	let url = format!("{}:{}", configuration.interface, configuration.port);
+	dapps_middleware(
-	let addr = url.parse().map_err(|_| format!("Invalid Webapps listen host/port given: {}", url))?;
-
-	let auth = configuration.user.as_ref().map(|username| {
-		let password = configuration.pass.as_ref().map_or_else(|| {
-			use rpassword::read_password;
-			println!("Type password for WebApps server (user: {}): ", username);
-			let pass = read_password().unwrap();
-			println!("OK, got it. Starting server...");
-			pass
-		}, |pass| pass.to_owned());
-		(username.to_owned(), password)
-	});
-
-	Ok(Some(setup_dapps_server(
 		deps,
 		configuration.dapps_path,
 		configuration.extra_dapps,
-		&addr,
+	).map(Some)
-		configuration.hosts,
-		configuration.cors,
-		auth,
-		configuration.all_apis,
-	)?))
 }
 
-pub use self::server::WebappServer;
+pub use self::server::Middleware;
-pub use self::server::setup_dapps_server;
+pub use self::server::dapps_middleware;
 
 #[cfg(not(feature = "dapps"))]
 mod server {
 	use super::Dependencies;
-	use std::net::SocketAddr;
 	use std::path::PathBuf;
+	use ethcore_rpc::{hyper, RequestMiddleware, RequestMiddlewareAction};
 
-	pub struct WebappServer;
+	pub struct Middleware;
-	pub fn setup_dapps_server(
+
+	impl RequestMiddleware for Middleware {
+		fn on_request(
+			&self, req: &hyper::server::Request<hyper::net::HttpStream>, control: &hyper::Control
+		) -> RequestMiddlewareAction {
+			unreachable!()
+		}
+	}
+
+	pub fn dapps_middleware(
 		_deps: Dependencies,
 		_dapps_path: PathBuf,
 		_extra_dapps: Vec<PathBuf>,
-		_url: &SocketAddr,
+	) -> Result<Middleware, String> {
-		_allowed_hosts: Option<Vec<String>>,
-		_cors: Option<Vec<String>>,
-		_auth: Option<(String, String)>,
-		_all_apis: bool,
-	) -> Result<WebappServer, String> {
 		Err("Your Parity version has been compiled without WebApps support.".into())
 	}
 }
@@ -169,70 +136,31 @@ mod server {
 	use super::Dependencies;
 	use std::path::PathBuf;
 	use std::sync::Arc;
-	use std::net::SocketAddr;
-	use std::io;
 
-	use ansi_term::Colour;
+	use hash_fetch::fetch::Client as FetchClient;
-	use ethcore_dapps::{AccessControlAllowOrigin, Host};
+	use parity_dapps;
 	use parity_reactor;
-	use rpc_apis;
 
-	pub use ethcore_dapps::Server as WebappServer;
+	pub type Middleware = parity_dapps::Middleware<FetchClient>;
 
-	pub fn setup_dapps_server<D: rpc_apis::Dependencies>(
+	pub fn dapps_middleware(
-		deps: Dependencies<D>,
+		deps: Dependencies,
 		dapps_path: PathBuf,
 		extra_dapps: Vec<PathBuf>,
-		url: &SocketAddr,
+	) -> Result<Middleware, String> {
-		allowed_hosts: Option<Vec<String>>,
-		cors: Option<Vec<String>>,
-		auth: Option<(String, String)>,
-		all_apis: bool,
-	) -> Result<WebappServer, String> {
-		use ethcore_dapps as dapps;
-
-		let server = dapps::ServerBuilder::new(
-			&dapps_path,
-			deps.contract_client,
-			parity_reactor::Remote::new(deps.remote.clone()),
-		);
-		let allowed_hosts: Option<Vec<_>> = allowed_hosts.map(|hosts| hosts.into_iter().map(Host::from).collect());
-		let cors: Option<Vec<_>> = cors.map(|cors| cors.into_iter().map(AccessControlAllowOrigin::from).collect());
-
 		let signer = deps.signer.clone();
-		let server = server
+		let parity_remote = parity_reactor::Remote::new(deps.remote.clone());
-			.fetch(deps.fetch.clone())
+		let web_proxy_tokens = Arc::new(move |token| signer.is_valid_web_proxy_access_token(&token));
-			.sync_status(deps.sync_status)
-			.web_proxy_tokens(Arc::new(move |token| signer.is_valid_web_proxy_access_token(&token)))
-			.extra_dapps(&extra_dapps)
-			.signer_address(deps.signer.address())
-			.allowed_hosts(allowed_hosts.into())
-			.extra_cors_headers(cors.into());
 
-		let api_set = if all_apis {
+		Ok(parity_dapps::Middleware::new(
-			warn!("{}", Colour::Red.bold().paint("*** INSECURE *** Running Dapps with all APIs exposed."));
+			parity_remote,
-			info!("If you do not intend this, exit now.");
+			deps.signer.address(),
-			rpc_apis::ApiSet::SafeContext
+			dapps_path,
-		} else {
+			extra_dapps,
-			rpc_apis::ApiSet::UnsafeContext
+			deps.contract_client,
-		};
+			deps.sync_status,
-		let apis = rpc_apis::setup_rpc(deps.stats, &*deps.apis, api_set);
+			web_proxy_tokens,
-		let start_result = match auth {
+			deps.fetch.clone(),
-			None => {
+		))
-				server.start_unsecured_http(url, apis, deps.remote)
-			},
-			Some((username, password)) => {
-				server.start_basic_auth_http(url, &username, &password, apis, deps.remote)
-			},
-		};
-
-		match start_result {
-			Err(dapps::ServerError::IoError(err)) => match err.kind() {
-				io::ErrorKind::AddrInUse => Err(format!("WebApps address {} is already in use, make sure that another instance of an Ethereum client is not running or change the address using the --dapps-port and --dapps-interface options.", url)),
-				_ => Err(format!("WebApps io error: {}", err)),
-			},
-			Err(e) => Err(format!("WebApps error: {:?}", e)),
-			Ok(server) => Ok(server),
-		}
 	}
 }

parity/deprecated.rs

@@ -21,94 +21,89 @@ use cli::Args;
 pub enum Deprecated {
 	DoesNothing(&'static str),
 	Replaced(&'static str, &'static str),
+	Removed(&'static str),
 }
 
 impl fmt::Display for Deprecated {
 	fn fmt(&self, f: &mut fmt::Formatter) -> Result<(), fmt::Error> {
 		match *self {
-			Deprecated::DoesNothing(s) => write!(f, "Option '{}' does nothing. It's on by default", s),
+			Deprecated::DoesNothing(s) => write!(f, "Option '{}' does nothing. It's on by default.", s),
-			Deprecated::Replaced(old, new) => write!(f, "Option '{}' is deprecated. Please use '{}' instead", old, new),
+			Deprecated::Replaced(old, new) => write!(f, "Option '{}' is deprecated. Please use '{}' instead.", old, new),
+			Deprecated::Removed(s) => write!(f, "Option '{}' has been removed and is no longer supported.", s)
 		}
 	}
 }
 
-impl Deprecated {
-	fn jsonrpc() -> Self {
-		Deprecated::DoesNothing("--jsonrpc")
-	}
-
-	fn rpc() -> Self {
-		Deprecated::DoesNothing("--rpc")
-	}
-
-	fn jsonrpc_off() -> Self {
-		Deprecated::Replaced("--jsonrpc-off", "--no-jsonrpc")
-	}
-
-	fn webapp() -> Self {
-		Deprecated::DoesNothing("--webapp")
-	}
-
-	fn dapps_off() -> Self {
-		Deprecated::Replaced("--dapps-off", "--no-dapps")
-	}
-
-	fn ipcdisable() -> Self {
-		Deprecated::Replaced("--ipcdisable", "--no-ipc")
-	}
-
-	fn ipc_off() -> Self {
-		Deprecated::Replaced("--ipc-off", "--no-ipc")
-	}
-
-	fn etherbase() -> Self {
-		Deprecated::Replaced("--etherbase", "--author")
-	}
-
-	fn extradata() -> Self {
-		Deprecated::Replaced("--extradata", "--extra-data")
-	}
-}
-
 pub fn find_deprecated(args: &Args) -> Vec<Deprecated> {
 	let mut result = vec![];
 
 	if args.flag_jsonrpc {
-		result.push(Deprecated::jsonrpc());
+		result.push(Deprecated::DoesNothing("--jsonrpc"));
 	}
 
 	if args.flag_rpc {
-		result.push(Deprecated::rpc());
+		result.push(Deprecated::DoesNothing("--rpc"));
 	}
 
 	if args.flag_jsonrpc_off {
-		result.push(Deprecated::jsonrpc_off());
+		result.push(Deprecated::Replaced("--jsonrpc-off", "--no-jsonrpc"));
 	}
 
 	if args.flag_webapp {
-		result.push(Deprecated::webapp())
+		result.push(Deprecated::DoesNothing("--webapp"));
 	}
 
 	if args.flag_dapps_off {
-		result.push(Deprecated::dapps_off());
+		result.push(Deprecated::Replaced("--dapps-off", "--no-dapps"));
 	}
 
 	if args.flag_ipcdisable {
-		result.push(Deprecated::ipcdisable());
+		result.push(Deprecated::Replaced("--ipcdisable", "--no-ipc"));
 	}
 
 	if args.flag_ipc_off {
-		result.push(Deprecated::ipc_off());
+		result.push(Deprecated::Replaced("--ipc-off", "--no-ipc"));
 	}
 
 	if args.flag_etherbase.is_some() {
-		result.push(Deprecated::etherbase());
+		result.push(Deprecated::Replaced("--etherbase", "--author"));
 	}
 
 	if args.flag_extradata.is_some() {
-		result.push(Deprecated::extradata());
+		result.push(Deprecated::Replaced("--extradata", "--extra-data"));
 	}
 
+	// Removed in 1.7
+	if args.flag_dapps_port.is_some() {
+		result.push(Deprecated::Replaced("--dapps-port", "--jsonrpc-port"));
+	}
+
+	if args.flag_dapps_interface.is_some() {
+		result.push(Deprecated::Replaced("--dapps-interface", "--jsonrpc-interface"));
+	}
+
+	if args.flag_dapps_hosts.is_some() {
+		result.push(Deprecated::Replaced("--dapps-hosts", "--jsonrpc-hosts"));
+	}
+
+	if args.flag_dapps_cors.is_some() {
+		result.push(Deprecated::Replaced("--dapps-cors", "--jsonrpc-cors"));
+	}
+
+	if args.flag_dapps_user.is_some() {
+		result.push(Deprecated::Removed("--dapps-user"));
+	}
+
+	if args.flag_dapps_pass.is_some() {
+		result.push(Deprecated::Removed("--dapps-pass"));
+	}
+
+	if args.flag_dapps_apis_all.is_some() {
+		result.push(Deprecated::Replaced("--dapps-apis-all", "--jsonrpc-apis"));
+	}
+
+	// Removed in 1.8
+
 	result
 }
 
@@ -131,17 +126,31 @@ mod tests {
 			args.flag_ipc_off = true;
 			args.flag_etherbase = Some(Default::default());
 			args.flag_extradata = Some(Default::default());
+			args.flag_dapps_port = Some(Default::default());
+			args.flag_dapps_interface = Some(Default::default());
+			args.flag_dapps_hosts = Some(Default::default());
+			args.flag_dapps_cors = Some(Default::default());
+			args.flag_dapps_user = Some(Default::default());
+			args.flag_dapps_pass = Some(Default::default());
+			args.flag_dapps_apis_all = Some(Default::default());
 			args
 		}), vec![
-			Deprecated::jsonrpc(),
+			Deprecated::DoesNothing("--jsonrpc"),
-			Deprecated::rpc(),
+			Deprecated::DoesNothing("--rpc"),
-			Deprecated::jsonrpc_off(),
+			Deprecated::Replaced("--jsonrpc-off", "--no-jsonrpc"),
-			Deprecated::webapp(),
+			Deprecated::DoesNothing("--webapp"),
-			Deprecated::dapps_off(),
+			Deprecated::Replaced("--dapps-off", "--no-dapps"),
-			Deprecated::ipcdisable(),
+			Deprecated::Replaced("--ipcdisable", "--no-ipc"),
-			Deprecated::ipc_off(),
+			Deprecated::Replaced("--ipc-off", "--no-ipc"),
-			Deprecated::etherbase(),
+			Deprecated::Replaced("--etherbase", "--author"),
-			Deprecated::extradata(),
+			Deprecated::Replaced("--extradata", "--extra-data"),
+			Deprecated::Replaced("--dapps-port", "--jsonrpc-port"),
+			Deprecated::Replaced("--dapps-interface", "--jsonrpc-interface"),
+			Deprecated::Replaced("--dapps-hosts", "--jsonrpc-hosts"),
+			Deprecated::Replaced("--dapps-cors", "--jsonrpc-cors"),
+			Deprecated::Removed("--dapps-user"),
+			Deprecated::Removed("--dapps-pass"),
+			Deprecated::Replaced("--dapps-apis-all", "--jsonrpc-apis"),
 		]);
 	}
 }

parity/ipfs.rs

@@ -15,10 +15,9 @@
 // along with Parity.  If not, see <http://www.gnu.org/licenses/>.
 
 use std::sync::Arc;
-use parity_ipfs_api::{self, AccessControlAllowOrigin, Host};
+use parity_ipfs_api::{self, AccessControlAllowOrigin, Host, Listening};
 use parity_ipfs_api::error::ServerError;
 use ethcore::client::BlockChainClient;
-use hyper::server::Listening;
 
 #[derive(Debug, PartialEq, Clone)]
 pub struct Configuration {

parity/main.rs

@@ -29,7 +29,6 @@ extern crate docopt;
 extern crate env_logger;
 extern crate fdlimit;
 extern crate futures;
-extern crate hyper;
 extern crate isatty;
 extern crate jsonrpc_core;
 extern crate num_cpus;
@@ -55,6 +54,7 @@ extern crate ethcore_logger;
 extern crate ethcore_rpc;
 extern crate ethcore_signer;
 extern crate ethcore_util as util;
+extern crate ethkey;
 extern crate ethsync;
 extern crate parity_hash_fetch as hash_fetch;
 extern crate parity_ipfs_api;
@@ -74,7 +74,11 @@ extern crate ethcore_stratum;
 extern crate ethcore_secretstore;
 
 #[cfg(feature = "dapps")]
-extern crate ethcore_dapps;
+extern crate parity_dapps;
+
+#[cfg(test)]
+#[macro_use]
+extern crate pretty_assertions;
 
 #[cfg(windows)] extern crate ws2_32;
 #[cfg(windows)] extern crate winapi;

parity/rpc.rs

@@ -14,24 +14,21 @@
 // You should have received a copy of the GNU General Public License
 // along with Parity.  If not, see <http://www.gnu.org/licenses/>.
 
-use std::fmt;
+use std::{io, fmt};
 use std::sync::Arc;
-use std::net::SocketAddr;
-use std::io;
 
+use dapps;
 use dir::default_data_path;
-use ethcore_rpc::{self as rpc, HttpServerError, Metadata, Origin, AccessControlAllowOrigin, Host};
 use ethcore_rpc::informant::{RpcStats, Middleware};
+use ethcore_rpc::{self as rpc, HttpServerError, Metadata, Origin, AccessControlAllowOrigin, Host};
 use helpers::parity_ipc_path;
-use hyper;
 use jsonrpc_core::MetaIoHandler;
-use rpc_apis;
-use rpc_apis::ApiSet;
 use parity_reactor::TokioRemote;
+use rpc_apis::{self, ApiSet};
 
-pub use ethcore_rpc::{IpcServer, HttpServer};
+pub use ethcore_rpc::{IpcServer, HttpServer, RequestMiddleware};
 
-#[derive(Debug, PartialEq)]
+#[derive(Debug, Clone, PartialEq)]
 pub struct HttpConfiguration {
 	pub enabled: bool,
 	pub interface: String,
@@ -39,6 +36,7 @@ pub struct HttpConfiguration {
 	pub apis: ApiSet,
 	pub cors: Option<Vec<String>>,
 	pub hosts: Option<Vec<String>>,
+	pub threads: Option<usize>,
 }
 
 impl Default for HttpConfiguration {
@@ -50,6 +48,7 @@ impl Default for HttpConfiguration {
 			apis: ApiSet::UnsafeContext,
 			cors: None,
 			hosts: Some(Vec::new()),
+			threads: None,
 		}
 	}
 }
@@ -89,13 +88,17 @@ pub struct Dependencies<D: rpc_apis::Dependencies> {
 }
 
 pub struct RpcExtractor;
-impl rpc::HttpMetaExtractor<Metadata> for RpcExtractor {
+impl rpc::HttpMetaExtractor for RpcExtractor {
-	fn read_metadata(&self, req: &hyper::server::Request<hyper::net::HttpStream>) -> Metadata {
+	type Metadata = Metadata;
-		let origin = req.headers().get::<hyper::header::Origin>()
+
-			.map(|origin| format!("{}://{}", origin.scheme, origin.host))
+	fn read_metadata(&self, origin: String, dapps_origin: Option<String>) -> Metadata {
-			.unwrap_or_else(|| "unknown".into());
 		let mut metadata = Metadata::default();
-		metadata.origin = Origin::Rpc(origin);
+
+		metadata.origin = match (origin.as_str(), dapps_origin) {
+			("null", Some(dapp)) => Origin::Dapps(dapp.into()),
+			_ => Origin::Rpc(origin),
+		};
+
 		metadata
 	}
 }
@@ -109,56 +112,101 @@ impl rpc::IpcMetaExtractor<Metadata> for RpcExtractor {
 	}
 }
 
-pub fn new_http<D>(conf: HttpConfiguration, deps: &Dependencies<D>) -> Result<Option<HttpServer>, String>
-	where D: rpc_apis::Dependencies
-{
-	if !conf.enabled {
-		return Ok(None);
-	}
-
-	let url = format!("{}:{}", conf.interface, conf.port);
-	let addr = url.parse().map_err(|_| format!("Invalid JSONRPC listen host/port given: {}", url))?;
-	Ok(Some(setup_http_rpc_server(deps, &addr, conf.cors, conf.hosts, conf.apis)?))
-}
-
 fn setup_apis<D>(apis: ApiSet, deps: &Dependencies<D>) -> MetaIoHandler<Metadata, Middleware<D::Notifier>>
 	where D: rpc_apis::Dependencies
 {
 	rpc_apis::setup_rpc(deps.stats.clone(), &*deps.apis, apis)
 }
 
-pub fn setup_http_rpc_server<D: rpc_apis::Dependencies>(
+pub fn new_http<D: rpc_apis::Dependencies>(
-	dependencies: &Dependencies<D>,
+	conf: HttpConfiguration,
-	url: &SocketAddr,
+	deps: &Dependencies<D>,
-	cors_domains: Option<Vec<String>>,
+	middleware: Option<dapps::Middleware>
-	allowed_hosts: Option<Vec<String>>,
+) -> Result<Option<HttpServer>, String> {
-	apis: ApiSet
+	if !conf.enabled {
-) -> Result<HttpServer, String> {
+		return Ok(None);
-	let handler = setup_apis(apis, dependencies);
+	}
-	let remote = dependencies.remote.clone();
+
-	let cors_domains: Option<Vec<_>> = cors_domains.map(|domains| domains.into_iter().map(AccessControlAllowOrigin::from).collect());
+	let url = format!("{}:{}", conf.interface, conf.port);
-	let allowed_hosts: Option<Vec<_>> = allowed_hosts.map(|hosts| hosts.into_iter().map(Host::from).collect());
+	let addr = url.parse().map_err(|_| format!("Invalid JSONRPC listen host/port given: {}", url))?;
-	let start_result = rpc::start_http(url, cors_domains.into(), allowed_hosts.into(), handler, remote, RpcExtractor);
+	let handler = setup_apis(conf.apis, deps);
+	let remote = deps.remote.clone();
+
+	let cors_domains: Option<Vec<_>> = conf.cors.map(|domains| domains.into_iter().map(AccessControlAllowOrigin::from).collect());
+	let allowed_hosts: Option<Vec<_>> = conf.hosts.map(|hosts| hosts.into_iter().map(Host::from).collect());
+
+	let start_result = rpc::start_http(
+		&addr,
+		cors_domains.into(),
+		allowed_hosts.into(),
+		handler,
+		remote,
+		RpcExtractor,
+		match (conf.threads, middleware) {
+			(Some(threads), None) => rpc::HttpSettings::Threads(threads),
+			(None, middleware) => rpc::HttpSettings::Dapps(middleware),
+			(Some(_), Some(_)) => {
+				return Err("Dapps and fast multi-threaded RPC server cannot be enabled at the same time.".into())
+			},
+		}
+	);
+
 	match start_result {
-		Err(HttpServerError::IoError(err)) => match err.kind() {
+		Ok(server) => Ok(Some(server)),
-			io::ErrorKind::AddrInUse => Err(format!("RPC address {} is already in use, make sure that another instance of an Ethereum client is not running or change the address using the --jsonrpc-port and --jsonrpc-interface options.", url)),
+		Err(HttpServerError::Io(err)) => match err.kind() {
+			io::ErrorKind::AddrInUse => Err(
+				format!("RPC address {} is already in use, make sure that another instance of an Ethereum client is not running or change the address using the --jsonrpc-port and --jsonrpc-interface options.", url)
+			),
 			_ => Err(format!("RPC io error: {}", err)),
 		},
 		Err(e) => Err(format!("RPC error: {:?}", e)),
-		Ok(server) => Ok(server),
 	}
 }
 
-pub fn new_ipc<D: rpc_apis::Dependencies>(conf: IpcConfiguration, deps: &Dependencies<D>) -> Result<Option<IpcServer>, String> {
+pub fn new_ipc<D: rpc_apis::Dependencies>(
-	if !conf.enabled { return Ok(None); }
+	conf: IpcConfiguration,
-	Ok(Some(setup_ipc_rpc_server(deps, &conf.socket_addr, conf.apis)?))
+	dependencies: &Dependencies<D>
-}
+) -> Result<Option<IpcServer>, String> {
-
+	if !conf.enabled {
-pub fn setup_ipc_rpc_server<D: rpc_apis::Dependencies>(dependencies: &Dependencies<D>, addr: &str, apis: ApiSet) -> Result<IpcServer, String> {
+		return Ok(None);
-	let handler = setup_apis(apis, dependencies);
+	}
+	let handler = setup_apis(conf.apis, dependencies);
 	let remote = dependencies.remote.clone();
-	match rpc::start_ipc(addr, handler, remote, RpcExtractor) {
+	match rpc::start_ipc(&conf.socket_addr, handler, remote, RpcExtractor) {
+		Ok(server) => Ok(Some(server)),
 		Err(io_error) => Err(format!("RPC io error: {}", io_error)),
-		Ok(server) => Ok(server)
+	}
+}
+
+#[cfg(test)]
+mod tests {
+	use super::RpcExtractor;
+	use ethcore_rpc::{HttpMetaExtractor, Origin};
+
+	#[test]
+	fn should_extract_rpc_origin() {
+		// given
+		let extractor = RpcExtractor;
+
+		// when
+		let meta = extractor.read_metadata("http://parity.io".into(), None);
+		let meta1 = extractor.read_metadata("http://parity.io".into(), Some("ignored".into()));
+
+		// then
+		assert_eq!(meta.origin, Origin::Rpc("http://parity.io".into()));
+		assert_eq!(meta1.origin, Origin::Rpc("http://parity.io".into()));
+	}
+
+	#[test]
+	fn should_dapps_origin() {
+		// given
+		let extractor = RpcExtractor;
+		let dapp = "https://wallet.ethereum.org".to_owned();
+
+		// when
+		let meta = extractor.read_metadata("null".into(), Some(dapp.clone()));
+
+		// then
+		assert_eq!(meta.origin, Origin::Dapps(dapp.into()));
 	}
 }

parity/rpc_apis.rs

@@ -83,7 +83,7 @@ impl FromStr for Api {
 	}
 }
 
-#[derive(Debug)]
+#[derive(Debug, Clone)]
 pub enum ApiSet {
 	SafeContext,
 	UnsafeContext,

parity/run.rs

@@ -37,7 +37,6 @@ use updater::{UpdatePolicy, Updater};
 use parity_reactor::EventLoop;
 use hash_fetch::fetch::{Fetch, Client as FetchClient};
 
-use rpc::{HttpConfiguration, IpcConfiguration};
 use params::{
 	SpecType, Pruning, AccountsConfig, GasPricerConfig, MinerExtras, Switch,
 	tracing_switch_to_bool, fatdb_switch_to_bool, mode_switch_to_bool
@@ -81,8 +80,8 @@ pub struct RunCmd {
 	pub daemon: Option<String>,
 	pub logger_config: LogConfig,
 	pub miner_options: MinerOptions,
-	pub http_conf: HttpConfiguration,
+	pub http_conf: rpc::HttpConfiguration,
-	pub ipc_conf: IpcConfiguration,
+	pub ipc_conf: rpc::IpcConfiguration,
 	pub net_conf: NetworkConfiguration,
 	pub network_id: Option<u64>,
 	pub warp_sync: bool,
@@ -117,11 +116,7 @@ pub struct RunCmd {
 	pub light: bool,
 }
 
-pub fn open_ui(dapps_conf: &dapps::Configuration, signer_conf: &signer::Configuration) -> Result<(), String> {
+pub fn open_ui(signer_conf: &signer::Configuration) -> Result<(), String> {
-	if !dapps_conf.enabled {
-		return Err("Cannot use UI command with Dapps turned off.".into())
-	}
-
 	if !signer_conf.enabled {
 		return Err("Cannot use UI command with UI turned off.".into())
 	}
@@ -134,12 +129,12 @@ pub fn open_ui(dapps_conf: &dapps::Configuration, signer_conf: &signer::Configur
 	Ok(())
 }
 
-pub fn open_dapp(dapps_conf: &dapps::Configuration, dapp: &str) -> Result<(), String> {
+pub fn open_dapp(dapps_conf: &dapps::Configuration, rpc_conf: &rpc::HttpConfiguration, dapp: &str) -> Result<(), String> {
 	if !dapps_conf.enabled {
 		return Err("Cannot use DAPP command with Dapps turned off.".into())
 	}
 
-	let url = format!("http://{}:{}/{}/", dapps_conf.interface, dapps_conf.port, dapp);
+	let url = format!("http://{}:{}/{}/", rpc_conf.interface, rpc_conf.port, dapp);
 	url::open(&url);
 	Ok(())
 }
@@ -282,11 +277,11 @@ fn execute_light(cmd: RunCmd, can_restart: bool, logger: Arc<RotatingLogger>) ->
 		cache: cache,
 		transaction_queue: txq,
 		dapps_interface: match cmd.dapps_conf.enabled {
-			true => Some(cmd.dapps_conf.interface.clone()),
+			true => Some(cmd.http_conf.interface.clone()),
 			false => None,
 		},
 		dapps_port: match cmd.dapps_conf.enabled {
-			true => Some(cmd.dapps_conf.port),
+			true => Some(cmd.http_conf.port),
 			false => None,
 		},
 		fetch: fetch,
@@ -300,7 +295,7 @@ fn execute_light(cmd: RunCmd, can_restart: bool, logger: Arc<RotatingLogger>) ->
 	};
 
 	// start rpc servers
-	let _http_server = rpc::new_http(cmd.http_conf, &dependencies)?;
+	let _http_server = rpc::new_http(cmd.http_conf, &dependencies, None)?;
 	let _ipc_server = rpc::new_ipc(cmd.ipc_conf, &dependencies)?;
 
 	// the signer server
@@ -329,9 +324,9 @@ fn execute_light(cmd: RunCmd, can_restart: bool, logger: Arc<RotatingLogger>) ->
 pub fn execute(cmd: RunCmd, can_restart: bool, logger: Arc<RotatingLogger>) -> Result<(bool, Option<String>), String> {
 	if cmd.ui && cmd.dapps_conf.enabled {
 		// Check if Parity is already running
-		let addr = format!("{}:{}", cmd.dapps_conf.interface, cmd.dapps_conf.port);
+		let addr = format!("{}:{}", cmd.signer_conf.interface, cmd.signer_conf.port);
 		if !TcpListener::bind(&addr as &str).is_ok() {
-			return open_ui(&cmd.dapps_conf, &cmd.signer_conf).map(|_| (false, None));
+			return open_ui(&cmd.signer_conf).map(|_| (false, None));
 		}
 	}
 
@@ -609,11 +604,11 @@ pub fn execute(cmd: RunCmd, can_restart: bool, logger: Arc<RotatingLogger>) -> R
 		updater: updater.clone(),
 		geth_compatibility: cmd.geth_compatibility,
 		dapps_interface: match cmd.dapps_conf.enabled {
-			true => Some(cmd.dapps_conf.interface.clone()),
+			true => Some(cmd.http_conf.interface.clone()),
 			false => None,
 		},
 		dapps_port: match cmd.dapps_conf.enabled {
-			true => Some(cmd.dapps_conf.port),
+			true => Some(cmd.http_conf.port),
 			false => None,
 		},
 		fetch: fetch.clone(),
@@ -625,26 +620,24 @@ pub fn execute(cmd: RunCmd, can_restart: bool, logger: Arc<RotatingLogger>) -> R
 		stats: rpc_stats.clone(),
 	};
 
-	// start rpc servers
-	let http_server = rpc::new_http(cmd.http_conf, &dependencies)?;
-	let ipc_server = rpc::new_ipc(cmd.ipc_conf, &dependencies)?;
-
 	// the dapps server
 	let dapps_deps = {
 		let (sync, client) = (sync_provider.clone(), client.clone());
 		let contract_client = Arc::new(::dapps::FullRegistrar { client: client.clone() });
 
 		dapps::Dependencies {
-			apis: deps_for_rpc_apis.clone(),
 			sync_status: Arc::new(move || is_major_importing(Some(sync.status().state), client.queue_info())),
 			contract_client: contract_client,
 			remote: event_loop.raw_remote(),
 			fetch: fetch.clone(),
 			signer: deps_for_rpc_apis.signer_service.clone(),
-			stats: rpc_stats.clone(),
 		}
 	};
-	let dapps_server = dapps::new(cmd.dapps_conf.clone(), dapps_deps)?;
+	let dapps_middleware = dapps::new(cmd.dapps_conf.clone(), dapps_deps)?;
+
+	// start rpc servers
+	let http_server = rpc::new_http(cmd.http_conf.clone(), &dependencies, dapps_middleware)?;
+	let ipc_server = rpc::new_ipc(cmd.ipc_conf, &dependencies)?;
 
 	// the signer server
 	let signer_deps = signer::Dependencies {
@@ -710,18 +703,18 @@ pub fn execute(cmd: RunCmd, can_restart: bool, logger: Arc<RotatingLogger>) -> R
 
 	// start ui
 	if cmd.ui {
-		open_ui(&cmd.dapps_conf, &cmd.signer_conf)?;
+		open_ui(&cmd.signer_conf)?;
 	}
 
 	if let Some(dapp) = cmd.dapp {
-		open_dapp(&cmd.dapps_conf, &dapp)?;
+		open_dapp(&cmd.dapps_conf, &cmd.http_conf, &dapp)?;
 	}
 
 	// Handle exit
 	let restart = wait_for_exit(panic_handler, Some(updater), Some(client), can_restart);
 
 	// drop this stuff as soon as exit detected.
-	drop((http_server, ipc_server, dapps_server, signer_server, secretstore_key_server, ipfs_server, event_loop));
+	drop((http_server, ipc_server, signer_server, secretstore_key_server, ipfs_server, event_loop));
 
 	info!("Finishing work, please wait...");
 

parity/secretstore.rs

@@ -53,6 +53,7 @@ mod server {
 
 #[cfg(feature="secretstore")]
 mod server {
+	use ethkey;
 	use ethcore_secretstore;
 	use super::{Configuration, Dependencies};
 
@@ -64,10 +65,35 @@ mod server {
 	impl KeyServer {
 		/// Create new key server
 		pub fn new(conf: Configuration, _deps: Dependencies) -> Result<Self, String> {
+			let key_pairs = vec![
+				ethkey::KeyPair::from_secret("6c26a76e9b31048d170873a791401c7e799a11f0cefc0171cc31a49800967509".parse().unwrap()).unwrap(),
+				ethkey::KeyPair::from_secret("7e94018b3731afdb3b4e6f4c3e179475640166da12e1d1b0c7d80729b1a5b452".parse().unwrap()).unwrap(),
+				ethkey::KeyPair::from_secret("5ab6ed2a52c33142380032c39a03a86b12eacb3fa4b53bc16d84f51318156f8c".parse().unwrap()).unwrap(),
+			];
 			let conf = ethcore_secretstore::ServiceConfiguration {
-				listener_addr: conf.interface,
+				listener_address: ethcore_secretstore::NodeAddress {
-				listener_port: conf.port,
+					address: conf.interface.clone(),
-				data_path: conf.data_path,
+					port: conf.port,
+				},
+				data_path: conf.data_path.clone(),
+				// TODO: this is test configuration. how it will be configured in production?
+				cluster_config: ethcore_secretstore::ClusterConfiguration {
+					threads: 4,
+					self_private: (***key_pairs[(conf.port - 8082) as usize].secret()).into(),
+					listener_address: ethcore_secretstore::NodeAddress {
+						address: conf.interface.clone(),
+						port: conf.port + 10,
+					},
+					nodes: key_pairs.iter().enumerate().map(|(i, kp)| (kp.public().clone(),
+						ethcore_secretstore::NodeAddress {
+							address: conf.interface.clone(),
+							port: 8082 + 10 + (i as u16),
+						})).collect(),
+					allow_connecting_to_higher_nodes: true,
+					encryption_config: ethcore_secretstore::EncryptionConfiguration {
+						key_check_timeout_ms: 1000,
+					},
+				}
 			};
 
 			let key_server = ethcore_secretstore::start(conf)

rpc/Cargo.toml

@@ -21,6 +21,7 @@ transient-hashmap = "0.4"
 
 jsonrpc-core = { git = "https://github.com/paritytech/jsonrpc.git", branch = "parity-1.7" }
 jsonrpc-http-server = { git = "https://github.com/paritytech/jsonrpc.git", branch = "parity-1.7" }
+jsonrpc-minihttp-server = { git = "https://github.com/paritytech/jsonrpc.git", branch = "parity-1.7" }
 jsonrpc-ipc-server = { git = "https://github.com/paritytech/jsonrpc.git", branch = "parity-1.7" }
 jsonrpc-macros = { git = "https://github.com/paritytech/jsonrpc.git", branch = "parity-1.7" }
 

rpc/src/lib.rs

@@ -29,8 +29,9 @@ extern crate time;
 extern crate transient_hashmap;
 
 extern crate jsonrpc_core;
-pub extern crate jsonrpc_http_server as http;
+extern crate jsonrpc_http_server as http;
-pub extern crate jsonrpc_ipc_server as ipc;
+extern crate jsonrpc_minihttp_server as minihttp;
+extern crate jsonrpc_ipc_server as ipc;
 
 extern crate ethash;
 extern crate ethcore;
@@ -62,10 +63,15 @@ extern crate ethjson;
 #[cfg(test)]
 extern crate ethcore_devtools as devtools;
 
+mod metadata;
 pub mod v1;
 
 pub use ipc::{Server as IpcServer, MetaExtractor as IpcMetaExtractor, RequestContext as IpcRequestContext};
-pub use http::{HttpMetaExtractor, Server as HttpServer, Error as HttpServerError, AccessControlAllowOrigin, Host};
+pub use http::{
+	hyper,
+	RequestMiddleware, RequestMiddlewareAction,
+	AccessControlAllowOrigin, Host,
+};
 
 pub use v1::{SigningQueue, SignerService, ConfirmationsQueue, NetworkSettings, Metadata, Origin, informant, dispatch};
 pub use v1::block_import::is_major_importing;
@@ -73,26 +79,98 @@ pub use v1::block_import::is_major_importing;
 use std::net::SocketAddr;
 use http::tokio_core;
 
+/// RPC HTTP Server instance
+pub enum HttpServer {
+	/// Fast MiniHTTP variant
+	Mini(minihttp::Server),
+	/// Hyper variant
+	Hyper(http::Server),
+}
+
+/// RPC HTTP Server error
+#[derive(Debug)]
+pub enum HttpServerError {
+	/// IO error
+	Io(::std::io::Error),
+	/// Other hyper error
+	Hyper(hyper::Error),
+}
+
+impl From<http::Error> for HttpServerError {
+	fn from(e: http::Error) -> Self {
+		use self::HttpServerError::*;
+		match e {
+			http::Error::Io(io) => Io(io),
+			http::Error::Other(hyper) => Hyper(hyper),
+		}
+	}
+}
+
+impl From<minihttp::Error> for HttpServerError {
+	fn from(e: minihttp::Error) -> Self {
+		use self::HttpServerError::*;
+		match e {
+			minihttp::Error::Io(io) => Io(io),
+		}
+	}
+}
+
+/// HTTP RPC server impl-independent metadata extractor
+pub trait HttpMetaExtractor: Send + Sync + 'static {
+	/// Type of Metadata
+	type Metadata: jsonrpc_core::Metadata;
+	/// Extracts metadata from given params.
+	fn read_metadata(&self, origin: String, dapps_origin: Option<String>) -> Self::Metadata;
+}
+
+/// HTTP server implementation-specific settings.
+pub enum HttpSettings<R: RequestMiddleware> {
+	/// Enable fast minihttp server with given number of threads.
+	Threads(usize),
+	/// Enable standard server with optional dapps middleware.
+	Dapps(Option<R>),
+}
+
 /// Start http server asynchronously and returns result with `Server` handle on success or an error.
-pub fn start_http<M, S, H, T>(
+pub fn start_http<M, S, H, T, R>(
 	addr: &SocketAddr,
 	cors_domains: http::DomainsValidation<http::AccessControlAllowOrigin>,
 	allowed_hosts: http::DomainsValidation<http::Host>,
 	handler: H,
 	remote: tokio_core::reactor::Remote,
 	extractor: T,
+	settings: HttpSettings<R>,
 ) -> Result<HttpServer, HttpServerError> where
 	M: jsonrpc_core::Metadata,
 	S: jsonrpc_core::Middleware<M>,
 	H: Into<jsonrpc_core::MetaIoHandler<M, S>>,
-	T: HttpMetaExtractor<M>,
+	T: HttpMetaExtractor<Metadata=M>,
+	R: RequestMiddleware,
 {
-	http::ServerBuilder::new(handler)
+	Ok(match settings {
+		HttpSettings::Dapps(middleware) => {
+			let mut builder = http::ServerBuilder::new(handler)
 				.event_loop_remote(remote)
-		.meta_extractor(extractor)
+				.meta_extractor(metadata::HyperMetaExtractor::new(extractor))
+				.cors(cors_domains.into())
+				.allowed_hosts(allowed_hosts.into());
+
+			if let Some(dapps) = middleware {
+				builder = builder.request_middleware(dapps)
+			}
+			builder.start_http(addr)
+				.map(HttpServer::Hyper)?
+		},
+		HttpSettings::Threads(threads) => {
+			minihttp::ServerBuilder::new(handler)
+				.threads(threads)
+				.meta_extractor(metadata::MiniMetaExtractor::new(extractor))
 				.cors(cors_domains.into())
 				.allowed_hosts(allowed_hosts.into())
 				.start_http(addr)
+				.map(HttpServer::Mini)?
+		},
+	})
 }
 
 /// Start ipc server asynchronously and returns result with `Server` handle on success or an error.

rpc/src/metadata.rs

@@ -0,0 +1,74 @@
+// Copyright 2015-2017 Parity Technologies (UK) Ltd.
+// This file is part of Parity.
+
+// Parity is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// Parity is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
+
+use jsonrpc_core;
+use http;
+use hyper;
+use minihttp;
+use HttpMetaExtractor;
+
+pub struct HyperMetaExtractor<T> {
+	extractor: T,
+}
+
+impl<T> HyperMetaExtractor<T> {
+	pub fn new(extractor: T) -> Self {
+		HyperMetaExtractor {
+			extractor: extractor,
+		}
+	}
+}
+
+impl<M, T> http::MetaExtractor<M> for HyperMetaExtractor<T> where
+	T: HttpMetaExtractor<Metadata = M>,
+	M: jsonrpc_core::Metadata,
+{
+	fn read_metadata(&self, req: &hyper::server::Request<hyper::net::HttpStream>) -> M {
+		let origin = req.headers().get::<hyper::header::Origin>()
+			.map(|origin| format!("{}://{}", origin.scheme, origin.host))
+			.unwrap_or_else(|| "unknown".into());
+		let dapps_origin = req.headers().get_raw("x-parity-origin")
+			.and_then(|raw| raw.one())
+			.map(|raw| String::from_utf8_lossy(raw).into_owned());
+		self.extractor.read_metadata(origin, dapps_origin)
+	}
+}
+
+pub struct MiniMetaExtractor<T> {
+	extractor: T,
+}
+
+impl<T> MiniMetaExtractor<T> {
+	pub fn new(extractor: T) -> Self {
+		MiniMetaExtractor {
+			extractor: extractor,
+		}
+	}
+}
+
+impl<M, T> minihttp::MetaExtractor<M> for MiniMetaExtractor<T> where
+	T: HttpMetaExtractor<Metadata = M>,
+	M: jsonrpc_core::Metadata,
+{
+	fn read_metadata(&self, req: &minihttp::Req) -> M {
+		let origin = req.header("origin")
+			.unwrap_or_else(|| "unknown")
+			.to_owned();
+		let dapps_origin = req.header("x-parity-origin").map(|h| h.to_owned());
+
+		self.extractor.read_metadata(origin, dapps_origin)
+	}
+}

scripts/targets.sh

@@ -5,7 +5,7 @@ export TARGETS="
 	-p ethash \
 	-p ethcore \
 	-p ethcore-bigint\
-	-p ethcore-dapps \
+	-p parity-dapps \
 	-p ethcore-rpc \
 	-p ethcore-signer \
 	-p ethcore-util \

secret_store/Cargo.toml

@@ -10,9 +10,19 @@ build = "build.rs"
 ethcore-ipc-codegen = { path = "../ipc/codegen" }
 
 [dependencies]
+byteorder = "1.0"
 log = "0.3"
 parking_lot = "0.4"
 hyper = { version = "0.10", default-features = false }
+serde = "0.9"
+serde_json = "0.9"
+serde_derive = "0.9"
+futures = "0.1"
+futures-cpupool = "0.1"
+rustc-serialize = "0.3"
+tokio-core = "0.1"
+tokio-service = "0.1"
+tokio-proto = "0.1"
 url = "1.0"
 ethcore-devtools = { path = "../devtools" }
 ethcore-util = { path = "../util" }

secret_store/src/http_listener.rs

@@ -14,7 +14,6 @@
 // You should have received a copy of the GNU General Public License
 // along with Parity.  If not, see <http://www.gnu.org/licenses/>.
 
-use std::str::FromStr;
 use std::sync::Arc;
 use hyper::header;
 use hyper::uri::RequestUri;
@@ -39,7 +38,9 @@ pub struct KeyServerHttpListener<T: KeyServer + 'static> {
 enum Request {
 	/// Invalid request
 	Invalid,
-	/// Request encryption key of given document for given requestor
+	/// Generate encryption key.
+	GenerateDocumentKey(DocumentAddress, RequestSignature, usize),
+	/// Request encryption key of given document for given requestor.
 	GetDocumentKey(DocumentAddress, RequestSignature),
 }
 
@@ -63,9 +64,9 @@ impl<T> KeyServerHttpListener<T> where T: KeyServer + 'static {
 			handler: shared_handler.clone(),
 		};
 
-		let listener_addr: &str = &format!("{}:{}", config.listener_addr, config.listener_port);
+		let listener_addr: &str = &format!("{}:{}", config.listener_address.address, config.listener_address.port);
-		let http_server = HttpServer::http(&listener_addr).unwrap();
+		let http_server = HttpServer::http(&listener_addr).expect("cannot start HttpServer");
-		let http_server = http_server.handle(handler).unwrap();
+		let http_server = http_server.handle(handler).expect("cannot start HttpServer");
 		let listener = KeyServerHttpListener {
 			_http_server: http_server,
 			handler: shared_handler,
@@ -75,6 +76,10 @@ impl<T> KeyServerHttpListener<T> where T: KeyServer + 'static {
 }
 
 impl<T> KeyServer for KeyServerHttpListener<T> where T: KeyServer + 'static {
+	fn generate_document_key(&self, signature: &RequestSignature, document: &DocumentAddress, threshold: usize) -> Result<DocumentEncryptedKey, Error> {
+		self.handler.key_server.generate_document_key(signature, document, threshold)
+	}
+
 	fn document_key(&self, signature: &RequestSignature, document: &DocumentAddress) -> Result<DocumentEncryptedKey, Error> {
 		self.handler.key_server.document_key(signature, document)
 	}
@@ -82,33 +87,51 @@ impl<T> KeyServer for KeyServerHttpListener<T> where T: KeyServer + 'static {
 
 impl<T> HttpHandler for KeyServerHttpHandler<T> where T: KeyServer + 'static {
 	fn handle(&self, req: HttpRequest, mut res: HttpResponse) {
-		if req.method != HttpMethod::Get {
-			warn!(target: "secretstore", "Ignoring {}-request {}", req.method, req.uri);
-			*res.status_mut() = HttpStatusCode::NotFound;
-			return;
-		}
-
 		if req.headers.has::<header::Origin>() {
 			warn!(target: "secretstore", "Ignoring {}-request {} with Origin header", req.method, req.uri);
 			*res.status_mut() = HttpStatusCode::NotFound;
 			return;
 		}
 
-		match req.uri {
+		let req_method = req.method.clone();
-			RequestUri::AbsolutePath(ref path) => match parse_request(&path) {
+		let req_uri = req.uri.clone();
-				Request::GetDocumentKey(document, signature) => {
+		match &req_uri {
-					let document_key = self.handler.key_server.document_key(&signature, &document)
+			&RequestUri::AbsolutePath(ref path) => match parse_request(&req_method, &path) {
+				Request::GenerateDocumentKey(document, signature, threshold) => {
+					return_document_key(req, res, self.handler.key_server.generate_document_key(&signature, &document, threshold)
 						.map_err(|err| {
-							warn!(target: "secretstore", "GetDocumentKey request {} has failed with: {}", req.uri, err);
+							warn!(target: "secretstore", "GenerateDocumentKey request {} has failed with: {}", req_uri, err);
 							err
-						});
+						}));
+				},
+				Request::GetDocumentKey(document, signature) => {
+					return_document_key(req, res, self.handler.key_server.document_key(&signature, &document)
+						.map_err(|err| {
+							warn!(target: "secretstore", "GetDocumentKey request {} has failed with: {}", req_uri, err);
+							err
+						}));
+				},
+				Request::Invalid => {
+					warn!(target: "secretstore", "Ignoring invalid {}-request {}", req_method, req_uri);
+					*res.status_mut() = HttpStatusCode::BadRequest;
+				},
+			},
+			_ => {
+				warn!(target: "secretstore", "Ignoring invalid {}-request {}", req_method, req_uri);
+				*res.status_mut() = HttpStatusCode::NotFound;
+			},
+		};
+	}
+}
+
+fn return_document_key(req: HttpRequest, mut res: HttpResponse, document_key: Result<DocumentEncryptedKey, Error>) {
 	match document_key {
 		Ok(document_key) => {
 			let document_key = document_key.to_hex().into_bytes();
 			res.headers_mut().set(header::ContentType::plaintext());
 			if let Err(err) = res.send(&document_key) {
-								// nothing to do, but log error
+				// nothing to do, but to log an error
-								warn!(target: "secretstore", "GetDocumentKey request {} response has failed with: {}", req.uri, err);
+				warn!(target: "secretstore", "response to request {} has failed with: {}", req.uri, err);
 			}
 		},
 		Err(Error::BadSignature) => *res.status_mut() = HttpStatusCode::BadRequest,
@@ -117,60 +140,50 @@ impl<T> HttpHandler for KeyServerHttpHandler<T> where T: KeyServer + 'static {
 		Err(Error::Database(_)) => *res.status_mut() = HttpStatusCode::InternalServerError,
 		Err(Error::Internal(_)) => *res.status_mut() = HttpStatusCode::InternalServerError,
 	}
-				},
-				Request::Invalid => {
-					warn!(target: "secretstore", "Ignoring invalid {}-request {}", req.method, req.uri);
-					*res.status_mut() = HttpStatusCode::BadRequest;
-				},
-			},
-			_ => {
-				warn!(target: "secretstore", "Ignoring invalid {}-request {}", req.method, req.uri);
-				*res.status_mut() = HttpStatusCode::NotFound;
-			},
-		};
-	}
 }
 
-fn parse_request(uri_path: &str) -> Request {
+fn parse_request(method: &HttpMethod, uri_path: &str) -> Request {
 	let uri_path = match percent_decode(uri_path.as_bytes()).decode_utf8() {
 		Ok(path) => path,
 		Err(_) => return Request::Invalid,
 	};
 
 	let path: Vec<String> = uri_path.trim_left_matches('/').split('/').map(Into::into).collect();
-	if path.len() != 2 || path[0].is_empty() || path[1].is_empty() {
+	if path.len() < 2 || path[0].is_empty() || path[1].is_empty() {
 		return Request::Invalid;
 	}
 
-	let document = DocumentAddress::from_str(&path[0]);
+	let args_len = path.len();
-	let signature = RequestSignature::from_str(&path[1]);
+	let document = path[0].parse();
-	match (document, signature) {
+	let signature = path[1].parse();
-		(Ok(document), Ok(signature)) => Request::GetDocumentKey(document, signature),
+	let threshold = (if args_len > 2 { &path[2] } else { "" }).parse();
+	match (args_len, method, document, signature, threshold) {
+		(3, &HttpMethod::Post, Ok(document), Ok(signature), Ok(threshold)) => Request::GenerateDocumentKey(document, signature, threshold),
+		(2, &HttpMethod::Get, Ok(document), Ok(signature), _) => Request::GetDocumentKey(document, signature),
 		_ => Request::Invalid,
 	}
 }
 
 #[cfg(test)]
 mod tests {
-	use std::str::FromStr;
+	use hyper::method::Method as HttpMethod;
-	use super::super::RequestSignature;
 	use super::{parse_request, Request};
 
 	#[test]
 	fn parse_request_successful() {
-		assert_eq!(parse_request("/0000000000000000000000000000000000000000000000000000000000000001/a199fb39e11eefb61c78a4074a53c0d4424600a3e74aad4fb9d93a26c30d067e1d4d29936de0c73f19827394a1dd049480a0d581aee7ae7546968da7d3d1c2fd01"),
+		assert_eq!(parse_request(&HttpMethod::Get, "/0000000000000000000000000000000000000000000000000000000000000001/a199fb39e11eefb61c78a4074a53c0d4424600a3e74aad4fb9d93a26c30d067e1d4d29936de0c73f19827394a1dd049480a0d581aee7ae7546968da7d3d1c2fd01"),
 			Request::GetDocumentKey("0000000000000000000000000000000000000000000000000000000000000001".into(),
-				RequestSignature::from_str("a199fb39e11eefb61c78a4074a53c0d4424600a3e74aad4fb9d93a26c30d067e1d4d29936de0c73f19827394a1dd049480a0d581aee7ae7546968da7d3d1c2fd01").unwrap()));
+				"a199fb39e11eefb61c78a4074a53c0d4424600a3e74aad4fb9d93a26c30d067e1d4d29936de0c73f19827394a1dd049480a0d581aee7ae7546968da7d3d1c2fd01".parse().unwrap()));
-		assert_eq!(parse_request("/%30000000000000000000000000000000000000000000000000000000000000001/a199fb39e11eefb61c78a4074a53c0d4424600a3e74aad4fb9d93a26c30d067e1d4d29936de0c73f19827394a1dd049480a0d581aee7ae7546968da7d3d1c2fd01"),
+		assert_eq!(parse_request(&HttpMethod::Get, "/%30000000000000000000000000000000000000000000000000000000000000001/a199fb39e11eefb61c78a4074a53c0d4424600a3e74aad4fb9d93a26c30d067e1d4d29936de0c73f19827394a1dd049480a0d581aee7ae7546968da7d3d1c2fd01"),
 			Request::GetDocumentKey("0000000000000000000000000000000000000000000000000000000000000001".into(),
-				RequestSignature::from_str("a199fb39e11eefb61c78a4074a53c0d4424600a3e74aad4fb9d93a26c30d067e1d4d29936de0c73f19827394a1dd049480a0d581aee7ae7546968da7d3d1c2fd01").unwrap()));
+				"a199fb39e11eefb61c78a4074a53c0d4424600a3e74aad4fb9d93a26c30d067e1d4d29936de0c73f19827394a1dd049480a0d581aee7ae7546968da7d3d1c2fd01".parse().unwrap()));
 	}
 
 	#[test]
 	fn parse_request_failed() {
-		assert_eq!(parse_request("/0000000000000000000000000000000000000000000000000000000000000001"), Request::Invalid);
+		assert_eq!(parse_request(&HttpMethod::Get, "/0000000000000000000000000000000000000000000000000000000000000001"), Request::Invalid);
-		assert_eq!(parse_request("/0000000000000000000000000000000000000000000000000000000000000001/"), Request::Invalid);
+		assert_eq!(parse_request(&HttpMethod::Get, "/0000000000000000000000000000000000000000000000000000000000000001/"), Request::Invalid);
-		assert_eq!(parse_request("/a/b"), Request::Invalid);
+		assert_eq!(parse_request(&HttpMethod::Get, "/a/b"), Request::Invalid);
-		assert_eq!(parse_request("/0000000000000000000000000000000000000000000000000000000000000001/a199fb39e11eefb61c78a4074a53c0d4424600a3e74aad4fb9d93a26c30d067e1d4d29936de0c73f19827394a1dd049480a0d581aee7ae7546968da7d3d1c2fd01/0000000000000000000000000000000000000000000000000000000000000002"), Request::Invalid);
+		assert_eq!(parse_request(&HttpMethod::Get, "/0000000000000000000000000000000000000000000000000000000000000001/a199fb39e11eefb61c78a4074a53c0d4424600a3e74aad4fb9d93a26c30d067e1d4d29936de0c73f19827394a1dd049480a0d581aee7ae7546968da7d3d1c2fd01/0000000000000000000000000000000000000000000000000000000000000002"), Request::Invalid);
 	}
 }

secret_store/src/key_server.rs

@@ -14,42 +14,78 @@
 // You should have received a copy of the GNU General Public License
 // along with Parity.  If not, see <http://www.gnu.org/licenses/>.
 
+use std::thread;
+use std::sync::Arc;
+use std::sync::mpsc;
+use futures::{self, Future};
+use parking_lot::Mutex;
+use tokio_core::reactor::Core;
 use ethcrypto;
 use ethkey;
 use super::acl_storage::AclStorage;
 use super::key_storage::KeyStorage;
+use key_server_cluster::ClusterCore;
 use traits::KeyServer;
-use types::all::{Error, RequestSignature, DocumentAddress, DocumentEncryptedKey};
+use types::all::{Error, RequestSignature, DocumentAddress, DocumentEncryptedKey, ClusterConfiguration};
+use key_server_cluster::{ClusterClient, ClusterConfiguration as NetClusterConfiguration};
 
 /// Secret store key server implementation
-pub struct KeyServerImpl<T: AclStorage, U: KeyStorage> {
+pub struct KeyServerImpl {
-	acl_storage: T,
+	data: Arc<Mutex<KeyServerCore>>,
-	key_storage: U,
 }
 
-impl<T, U> KeyServerImpl<T, U> where T: AclStorage, U: KeyStorage {
+/// Secret store key server data.
+pub struct KeyServerCore {
+	close: Option<futures::Complete<()>>,
+	handle: Option<thread::JoinHandle<()>>,
+	cluster: Option<Arc<ClusterClient>>,
+}
+
+impl KeyServerImpl {
 	/// Create new key server instance
-	pub fn new(acl_storage: T, key_storage: U) -> Self {
+	pub fn new(config: &ClusterConfiguration, acl_storage: Arc<AclStorage>, key_storage: Arc<KeyStorage>) -> Result<Self, Error> {
-		KeyServerImpl {
+		Ok(KeyServerImpl {
-			acl_storage: acl_storage,
+			data: Arc::new(Mutex::new(KeyServerCore::new(config, acl_storage, key_storage)?)),
-			key_storage: key_storage,
+		})
 	}
+
+	#[cfg(test)]
+	/// Get cluster client reference.
+	pub fn cluster(&self) -> Arc<ClusterClient> {
+		self.data.lock().cluster.clone()
+			.expect("cluster can be None in test cfg only; test cfg is for correct tests; qed")
 	}
 }
 
-impl<T, U> KeyServer for KeyServerImpl<T, U> where T: AclStorage, U: KeyStorage {
+impl KeyServer for KeyServerImpl {
+	fn generate_document_key(&self, signature: &RequestSignature, document: &DocumentAddress, threshold: usize) -> Result<DocumentEncryptedKey, Error> {
+		// recover requestor' public key from signature
+		let public = ethkey::recover(signature, document)
+			.map_err(|_| Error::BadSignature)?;
+
+		// generate document key
+		let data = self.data.lock();
+		let encryption_session = data.cluster.as_ref().expect("cluster can be None in test cfg only; test cfg is for correct tests; qed")
+			.new_encryption_session(document.clone(), threshold)?;
+		let document_key = encryption_session.wait()?;
+
+		// encrypt document key with requestor public key
+		let document_key = ethcrypto::ecies::encrypt_single_message(&public, &document_key)
+			.map_err(|err| Error::Internal(format!("Error encrypting document key: {}", err)))?;
+		Ok(document_key)
+	}
+
 	fn document_key(&self, signature: &RequestSignature, document: &DocumentAddress) -> Result<DocumentEncryptedKey, Error> {
 		// recover requestor' public key from signature
 		let public = ethkey::recover(signature, document)
 			.map_err(|_| Error::BadSignature)?;
 
-		// check that requestor has access to the document
+		// decrypt document key
-		if !self.acl_storage.check(&public, document)? {
+		let data = self.data.lock();
-			return Err(Error::AccessDenied);
+		let decryption_session = data.cluster.as_ref().expect("cluster can be None in test cfg only; test cfg is for correct tests; qed")
-		}
+			.new_decryption_session(document.clone(), signature.clone())?;
+		let document_key = decryption_session.wait()?;
 
-		// read unencrypted document key
-		let document_key = self.key_storage.get(document)?;
 		// encrypt document key with requestor public key
 		let document_key = ethcrypto::ecies::encrypt_single_message(&public, &document_key)
 			.map_err(|err| Error::Internal(format!("Error encrypting document key: {}", err)))?;
@@ -57,68 +93,132 @@ impl<T, U> KeyServer for KeyServerImpl<T, U> where T: AclStorage, U: KeyStorage
 	}
 }
 
+impl KeyServerCore {
+	pub fn new(config: &ClusterConfiguration, acl_storage: Arc<AclStorage>, key_storage: Arc<KeyStorage>) -> Result<Self, Error> {
+		let config = NetClusterConfiguration {
+			threads: config.threads,
+			self_key_pair: ethkey::KeyPair::from_secret_slice(&config.self_private)?,
+			listen_address: (config.listener_address.address.clone(), config.listener_address.port),
+			nodes: config.nodes.iter()
+				.map(|(node_id, node_address)| (node_id.clone(), (node_address.address.clone(), node_address.port)))
+				.collect(),
+			allow_connecting_to_higher_nodes: config.allow_connecting_to_higher_nodes,
+			encryption_config: config.encryption_config.clone(),
+			acl_storage: acl_storage,
+			key_storage: key_storage,
+		};
+
+		let (stop, stopped) = futures::oneshot();
+		let (tx, rx) = mpsc::channel();
+		let handle = thread::spawn(move || {
+			let mut el = match Core::new() {
+				Ok(el) => el,
+				Err(e) => {
+					tx.send(Err(Error::Internal(format!("error initializing event loop: {}", e)))).expect("Rx is blocking upper thread.");
+					return;
+				},
+			};
+			
+			let cluster = ClusterCore::new(el.handle(), config);
+			let cluster_client = cluster.and_then(|c| c.run().map(|_| c.client()));
+			tx.send(cluster_client.map_err(Into::into)).expect("Rx is blocking upper thread.");
+			let _ = el.run(futures::empty().select(stopped));
+		});
+		let cluster = rx.recv().map_err(|e| Error::Internal(format!("error initializing event loop: {}", e)))??;
+
+		Ok(KeyServerCore {
+			close: Some(stop),
+			handle: Some(handle),
+			cluster: Some(cluster),
+		})
+	}
+}
+
+impl Drop for KeyServerCore {
+	fn drop(&mut self) {
+		self.close.take().map(|v| v.send(()));
+		self.handle.take().map(|h| h.join());
+	}
+}
+
 #[cfg(test)]
 mod tests {
-	use std::str::FromStr;
+	use std::time;
+	use std::sync::Arc;
 	use ethcrypto;
-	use ethkey::{self, Secret};
+	use ethkey::{self, Random, Generator};
 	use acl_storage::DummyAclStorage;
-	use key_storage::KeyStorage;
 	use key_storage::tests::DummyKeyStorage;
-	use super::super::{Error, RequestSignature, DocumentAddress};
+	use types::all::{ClusterConfiguration, NodeAddress, EncryptionConfiguration, DocumentEncryptedKey, DocumentKey};
+	use super::super::{RequestSignature, DocumentAddress};
 	use super::{KeyServer, KeyServerImpl};
 
 	const DOCUMENT1: &'static str = "0000000000000000000000000000000000000000000000000000000000000001";
-	const DOCUMENT2: &'static str = "0000000000000000000000000000000000000000000000000000000000000002";
-	const KEY1: &'static str = "key1";
 	const PRIVATE1: &'static str = "03055e18a8434dcc9061cc1b81c4ef84dc7cf4574d755e52cdcf0c8898b25b11";
-	const PUBLIC2: &'static str = "dfe62f56bb05fbd85b485bac749f3410309e24b352bac082468ce151e9ddb94fa7b5b730027fe1c7c5f3d5927621d269f91aceb5caa3c7fe944677a22f88a318";
-	const PRIVATE2: &'static str = "0eb3816f4f705fa0fd952fb27b71b8c0606f09f4743b5b65cbc375bd569632f2";
-
-	fn create_key_server() -> KeyServerImpl<DummyAclStorage, DummyKeyStorage> {
-		let acl_storage = DummyAclStorage::default();
-		let key_storage = DummyKeyStorage::default();
-		key_storage.insert(DOCUMENT1.into(), KEY1.into()).unwrap();
-		acl_storage.prohibit(PUBLIC2.into(), DOCUMENT1.into());
-		KeyServerImpl::new(acl_storage, key_storage)
-	}
 
 	fn make_signature(secret: &str, document: &'static str) -> RequestSignature {
-		let secret = Secret::from_str(secret).unwrap();
+		let secret = secret.parse().unwrap();
 		let document: DocumentAddress = document.into();
 		ethkey::sign(&secret, &document).unwrap()
 	}
 
+	fn decrypt_document_key(secret: &str, document_key: DocumentEncryptedKey) -> DocumentKey {
+		let secret = secret.parse().unwrap();
+		ethcrypto::ecies::decrypt_single_message(&secret, &document_key).unwrap()
+	}
+
 	#[test]
-	fn document_key_succeeds() {
+	fn document_key_generation_and_retrievement_works_over_network() {
-		let key_server = create_key_server();
+		//::util::log::init_log();
+
+		let num_nodes = 3;
+		let key_pairs: Vec<_> = (0..num_nodes).map(|_| Random.generate().unwrap()).collect();
+		let configs: Vec<_> = (0..num_nodes).map(|i| ClusterConfiguration {
+				threads: 1,
+				self_private: (***key_pairs[i].secret()).into(),
+				listener_address: NodeAddress {
+					address: "127.0.0.1".into(),
+					port: 6060 + (i as u16),
+				},
+				nodes: key_pairs.iter().enumerate().map(|(j, kp)| (kp.public().clone(),
+					NodeAddress {
+						address: "127.0.0.1".into(),
+						port: 6060 + (j as u16),
+					})).collect(),
+				allow_connecting_to_higher_nodes: false,
+				encryption_config: EncryptionConfiguration {
+					key_check_timeout_ms: 10,
+				},
+			}).collect();
+		let key_servers: Vec<_> = configs.into_iter().map(|cfg|
+			KeyServerImpl::new(&cfg, Arc::new(DummyAclStorage::default()), Arc::new(DummyKeyStorage::default())).unwrap()
+		).collect();
+
+		// wait until connections are established
+		let start = time::Instant::now();
+		loop {
+			if key_servers.iter().all(|ks| ks.cluster().cluster_state().connected.len() == num_nodes - 1) {
+				break;
+			}
+			if time::Instant::now() - start > time::Duration::from_millis(30000) {
+				panic!("connections are not established in 30000ms");
+			}
+		}
+
+		let test_cases = [0, 1, 2];
+		for threshold in &test_cases {
+			// generate document key
+			// TODO: it is an error that we can regenerate key for the same DOCUMENT
 			let signature = make_signature(PRIVATE1, DOCUMENT1);
-		let document_key = key_server.document_key(&signature, &DOCUMENT1.into()).unwrap();
+			let generated_key = key_servers[0].generate_document_key(&signature, &DOCUMENT1.into(), *threshold).unwrap();
-		let document_key = ethcrypto::ecies::decrypt_single_message(&Secret::from_str(PRIVATE1).unwrap(), &document_key);
+			let generated_key = decrypt_document_key(PRIVATE1, generated_key);
-		assert_eq!(document_key, Ok(KEY1.into()));
-	}
 
-	#[test]
+			// now let's try to retrieve key back
-	fn document_key_fails_when_bad_signature() {
+			for key_server in key_servers.iter() {
-		let key_server = create_key_server();
+				let retrieved_key = key_server.document_key(&signature, &DOCUMENT1.into()).unwrap();
-		let signature = RequestSignature::default();
+				let retrieved_key = decrypt_document_key(PRIVATE1, retrieved_key);
-		let document_key = key_server.document_key(&signature, &DOCUMENT1.into());
+				assert_eq!(retrieved_key, generated_key);
-		assert_eq!(document_key, Err(Error::BadSignature));
 			}
-
-	#[test]
-	fn document_key_fails_when_acl_check_fails() {
-		let key_server = create_key_server();
-		let signature = make_signature(PRIVATE2, DOCUMENT1);
-		let document_key = key_server.document_key(&signature, &DOCUMENT1.into());
-		assert_eq!(document_key, Err(Error::AccessDenied));
 		}
-
-	#[test]
-	fn document_key_fails_when_document_not_found() {
-		let key_server = create_key_server();
-		let signature = make_signature(PRIVATE1, DOCUMENT2);
-		let document_key = key_server.document_key(&signature, &DOCUMENT2.into());
-		assert_eq!(document_key, Err(Error::DocumentNotFound));
 	}
 }

secret_store/src/key_server_cluster/cluster.rs

@@ -14,11 +14,42 @@
 // You should have received a copy of the GNU General Public License
 // along with Parity.  If not, see <http://www.gnu.org/licenses/>.
 
-use key_server_cluster::{Error, NodeId};
+use std::io;
-use key_server_cluster::message::Message;
+use std::time;
+use std::sync::Arc;
+use std::collections::{BTreeMap, BTreeSet, VecDeque};
+use std::collections::btree_map::Entry;
+use std::net::{SocketAddr, IpAddr};
+use futures::{finished, failed, Future, Stream, BoxFuture};
+use futures_cpupool::CpuPool;
+use parking_lot::{RwLock, Mutex};
+use tokio_core::io::IoFuture;
+use tokio_core::reactor::{Handle, Remote, Timeout, Interval};
+use tokio_core::net::{TcpListener, TcpStream};
+use ethkey::{Secret, KeyPair, Signature, Random, Generator};
+use key_server_cluster::{Error, NodeId, SessionId, EncryptionConfiguration, AclStorage, KeyStorage};
+use key_server_cluster::message::{self, Message, ClusterMessage, EncryptionMessage, DecryptionMessage};
+use key_server_cluster::decryption_session::{SessionImpl as DecryptionSessionImpl, DecryptionSessionId,
+	SessionParams as DecryptionSessionParams, Session as DecryptionSession};
+use key_server_cluster::encryption_session::{SessionImpl as EncryptionSessionImpl, SessionState as EncryptionSessionState,
+	SessionParams as EncryptionSessionParams, Session as EncryptionSession};
+use key_server_cluster::io::{DeadlineStatus, ReadMessage, SharedTcpStream, read_encrypted_message, WriteMessage, write_encrypted_message};
+use key_server_cluster::net::{accept_connection as net_accept_connection, connect as net_connect, Connection as NetConnection};
+
+pub type BoxedEmptyFuture = BoxFuture<(), ()>;
+
+/// Cluster interface for external clients.
+pub trait ClusterClient: Send + Sync {
+	/// Get cluster state.
+	fn cluster_state(&self) -> ClusterState;
+	/// Start new encryption session.
+	fn new_encryption_session(&self, session_id: SessionId, threshold: usize) -> Result<Arc<EncryptionSession>, Error>;
+	/// Start new decryption session.
+	fn new_decryption_session(&self, session_id: SessionId, requestor_signature: Signature) -> Result<Arc<DecryptionSession>, Error>;
+}
 
 /// Cluster access for single encryption/decryption participant.
-pub trait Cluster {
+pub trait Cluster: Send + Sync {
 	/// Broadcast message to all other nodes.
 	fn broadcast(&self, message: Message) -> Result<(), Error>;
 	/// Send message to given node.
@@ -27,13 +58,841 @@ pub trait Cluster {
 	fn blacklist(&self, node: &NodeId);
 }
 
+#[derive(Clone)]
+/// Cluster initialization parameters.
+pub struct ClusterConfiguration {
+	/// Number of threads reserved by cluster.
+	pub threads: usize,
+	/// Allow connecting to 'higher' nodes.
+	pub allow_connecting_to_higher_nodes: bool,
+	/// KeyPair this node holds.
+	pub self_key_pair: KeyPair,
+	/// Interface to listen to.
+	pub listen_address: (String, u16),
+	/// Cluster nodes.
+	pub nodes: BTreeMap<NodeId, (String, u16)>,
+	/// Encryption session configuration.
+	pub encryption_config: EncryptionConfiguration,
+	/// Reference to key storage
+	pub key_storage: Arc<KeyStorage>,
+	/// Reference to ACL storage
+	pub acl_storage: Arc<AclStorage>,
+}
+
+/// Cluster state.
+pub struct ClusterState {
+	/// Nodes, to which connections are established.
+	pub connected: BTreeSet<NodeId>,
+}
+
+/// Network cluster implementation.
+pub struct ClusterCore {
+	/// Handle to the event loop.
+	handle: Handle,
+	/// Listen address.
+	listen_address: SocketAddr,
+	/// Cluster data.
+	data: Arc<ClusterData>,
+}
+
+/// Network cluster client interface implementation.
+pub struct ClusterClientImpl {
+	/// Cluster data.
+	data: Arc<ClusterData>,
+}
+
+/// Network cluster view. It is a communication channel, required in single session.
+pub struct ClusterView {
+	core: Arc<Mutex<ClusterViewCore>>,
+}
+
+/// Cross-thread shareable cluster data.
+pub struct ClusterData {
+	/// Cluster configuration.
+	config: ClusterConfiguration,
+	/// Handle to the event loop.
+	handle: Remote,
+	/// Handle to the cpu thread pool.
+	pool: CpuPool,
+	/// KeyPair this node holds.
+	self_key_pair: KeyPair,
+	/// Connections data.
+	connections: ClusterConnections,
+	/// Active sessions data.
+	sessions: ClusterSessions,
+}
+
+/// Connections that are forming the cluster.
+pub struct ClusterConnections {
+	/// Self node id.
+	pub self_node_id: NodeId,
+	/// All known other key servers.
+	pub nodes: BTreeMap<NodeId, SocketAddr>,
+	/// Active connections to key servers.
+	pub connections: RwLock<BTreeMap<NodeId, Arc<Connection>>>,
+}
+
+/// Active sessions on this cluster.
+pub struct ClusterSessions {
+	/// Self node id.
+	pub self_node_id: NodeId,
+	/// Reference to key storage
+	pub key_storage: Arc<KeyStorage>,
+	/// Reference to ACL storage
+	pub acl_storage: Arc<AclStorage>,
+	/// Active encryption sessions.
+	pub encryption_sessions: RwLock<BTreeMap<SessionId, QueuedEncryptionSession>>,
+	/// Active decryption sessions.
+	pub decryption_sessions: RwLock<BTreeMap<DecryptionSessionId, QueuedDecryptionSession>>,
+}
+
+/// Encryption session and its message queue.
+pub struct QueuedEncryptionSession {
+	/// Encryption session.
+	pub session: Arc<EncryptionSessionImpl>,
+	/// Messages queue.
+	pub queue: VecDeque<(NodeId, EncryptionMessage)>,
+}
+
+/// Decryption session and its message queue.
+pub struct QueuedDecryptionSession {
+	/// Decryption session.
+	pub session: Arc<DecryptionSessionImpl>,
+	/// Messages queue.
+	pub queue: VecDeque<(NodeId, DecryptionMessage)>,
+}
+
+/// Cluster view core.
+struct ClusterViewCore {
+	/// Cluster reference.
+	cluster: Arc<ClusterData>,
+	/// Subset of nodes, required for this session.
+	nodes: BTreeSet<NodeId>,
+}
+
+/// Connection to single node.
+pub struct Connection {
+	/// Node id.
+	node_id: NodeId,
+	/// Node address.
+	node_address: SocketAddr,
+	/// Is inbound connection?
+	is_inbound: bool,
+	/// Tcp stream.
+	stream: SharedTcpStream,
+	/// Connection key.
+	key: Secret,
+	/// Last message time.
+	last_message_time: Mutex<time::Instant>,
+}
+
+impl ClusterCore {
+	pub fn new(handle: Handle, config: ClusterConfiguration) -> Result<Arc<Self>, Error> {
+		let listen_address = make_socket_address(&config.listen_address.0, config.listen_address.1)?;
+		let connections = ClusterConnections::new(&config)?;
+		let sessions = ClusterSessions::new(&config);
+		let data = ClusterData::new(&handle, config, connections, sessions);
+
+		Ok(Arc::new(ClusterCore {
+			handle: handle,
+			listen_address: listen_address,
+			data: data,
+		}))
+	}
+
+	/// Create new client interface.
+	pub fn client(&self) -> Arc<ClusterClient> {
+		Arc::new(ClusterClientImpl::new(self.data.clone()))
+	}
+
+	#[cfg(test)]
+	/// Get cluster configuration.
+	pub fn config(&self) -> &ClusterConfiguration {
+		&self.data.config
+	}
+
+	#[cfg(test)]
+	/// Get connection to given node.
+	pub fn connection(&self, node: &NodeId) -> Option<Arc<Connection>> {
+		self.data.connection(node)
+	}
+
+	/// Run cluster
+	pub fn run(&self) -> Result<(), Error> {
+		// try to connect to every other peer
+		ClusterCore::connect_disconnected_nodes(self.data.clone());
+
+		// schedule maintain procedures
+		ClusterCore::schedule_maintain(&self.handle, self.data.clone());
+
+		// start listening for incoming connections
+		self.handle.spawn(ClusterCore::listen(&self.handle, self.data.clone(), self.listen_address.clone())?);
+
+		Ok(())
+	}
+
+	/// Connect to peer.
+	fn connect(data: Arc<ClusterData>, node_address: SocketAddr) {
+		data.handle.clone().spawn(move |handle| {
+			data.pool.clone().spawn(ClusterCore::connect_future(handle, data, node_address))
+		})
+	}
+
+	/// Connect to socket using given context and handle.
+	fn connect_future(handle: &Handle, data: Arc<ClusterData>, node_address: SocketAddr) -> BoxedEmptyFuture {
+		let disconnected_nodes = data.connections.disconnected_nodes().keys().cloned().collect();
+		net_connect(&node_address, handle, data.self_key_pair.clone(), disconnected_nodes)
+			.then(move |result| ClusterCore::process_connection_result(data, false, result))
+			.then(|_| finished(()))
+			.boxed()
+	}
+
+	/// Start listening for incoming connections.
+	fn listen(handle: &Handle, data: Arc<ClusterData>, listen_address: SocketAddr) -> Result<BoxedEmptyFuture, Error> {
+		Ok(TcpListener::bind(&listen_address, &handle)?
+			.incoming()
+			.and_then(move |(stream, node_address)| {
+				ClusterCore::accept_connection(data.clone(), stream, node_address);
+				Ok(())
+			})
+			.for_each(|_| Ok(()))
+			.then(|_| finished(()))
+			.boxed())
+	}
+
+	/// Accept connection.
+	fn accept_connection(data: Arc<ClusterData>, stream: TcpStream, node_address: SocketAddr) {
+		data.handle.clone().spawn(move |handle| {
+			data.pool.clone().spawn(ClusterCore::accept_connection_future(handle, data, stream, node_address))
+		})
+	}
+
+	/// Accept connection future.
+	fn accept_connection_future(handle: &Handle, data: Arc<ClusterData>, stream: TcpStream, node_address: SocketAddr) -> BoxedEmptyFuture {
+		let disconnected_nodes = data.connections.disconnected_nodes().keys().cloned().collect();
+		net_accept_connection(node_address, stream, handle, data.self_key_pair.clone(), disconnected_nodes)
+			.then(move |result| ClusterCore::process_connection_result(data, true, result))
+			.then(|_| finished(()))
+			.boxed()
+	}
+
+	/// Schedule mainatain procedures.
+	fn schedule_maintain(handle: &Handle, data: Arc<ClusterData>) {
+		// TODO: per-session timeouts (node can respond to messages, but ignore sessions messages)
+		let (d1, d2, d3) = (data.clone(), data.clone(), data.clone());
+		let interval: BoxedEmptyFuture = Interval::new(time::Duration::new(10, 0), handle)
+			.expect("failed to create interval")
+			.and_then(move |_| Ok(trace!(target: "secretstore_net", "{}: executing maintain procedures", d1.self_key_pair.public())))
+			.and_then(move |_| Ok(ClusterCore::keep_alive(d2.clone())))
+			.and_then(move |_| Ok(ClusterCore::connect_disconnected_nodes(d3.clone())))
+			.for_each(|_| Ok(()))
+			.then(|_| finished(()))
+			.boxed();
+
+		data.spawn(interval);
+	}
+
+	/// Called for every incomming mesage.
+	fn process_connection_messages(data: Arc<ClusterData>, connection: Arc<Connection>) -> IoFuture<Result<(), Error>> {
+		connection
+			.read_message()
+			.then(move |result|
+				match result {
+					Ok((_, Ok(message))) => {
+						ClusterCore::process_connection_message(data.clone(), connection.clone(), message);
+						// continue serving connection
+						data.spawn(ClusterCore::process_connection_messages(data.clone(), connection));
+						finished(Ok(())).boxed()
+					},
+					Ok((_, Err(err))) => {
+						warn!(target: "secretstore_net", "{}: protocol error {} when reading message from node {}", data.self_key_pair.public(), err, connection.node_id());
+						// continue serving connection
+						data.spawn(ClusterCore::process_connection_messages(data.clone(), connection));
+						finished(Err(err)).boxed()
+					},
+					Err(err) => {
+						warn!(target: "secretstore_net", "{}: network error {} when reading message from node {}", data.self_key_pair.public(), err, connection.node_id());
+						// close connection
+						data.connections.remove(connection.node_id(), connection.is_inbound());
+						failed(err).boxed()
+					},
+				}
+			).boxed()
+	}
+
+	/// Send keepalive messages to every othe node.
+	fn keep_alive(data: Arc<ClusterData>) {
+		for connection in data.connections.active_connections() {
+			let last_message_diff = time::Instant::now() - connection.last_message_time();
+			if last_message_diff > time::Duration::from_secs(60) {
+				data.connections.remove(connection.node_id(), connection.is_inbound());
+				data.sessions.on_connection_timeout(connection.node_id());
+			}
+			else if last_message_diff > time::Duration::from_secs(30) {
+				data.spawn(connection.send_message(Message::Cluster(ClusterMessage::KeepAlive(message::KeepAlive {}))));
+			}
+		}
+	}
+
+	/// Try to connect to every disconnected node.
+	fn connect_disconnected_nodes(data: Arc<ClusterData>) {
+		for (node_id, node_address) in data.connections.disconnected_nodes() {
+			if data.config.allow_connecting_to_higher_nodes || data.self_key_pair.public() < &node_id {
+				ClusterCore::connect(data.clone(), node_address);
+			}
+		}
+	}
+
+	/// Process connection future result.
+	fn process_connection_result(data: Arc<ClusterData>, is_inbound: bool, result: Result<DeadlineStatus<Result<NetConnection, Error>>, io::Error>) -> IoFuture<Result<(), Error>> {
+		match result {
+			Ok(DeadlineStatus::Meet(Ok(connection))) => {
+				let connection = Connection::new(is_inbound, connection);
+				if data.connections.insert(connection.clone()) {
+					ClusterCore::process_connection_messages(data.clone(), connection)
+				} else {
+					finished(Ok(())).boxed()
+				}
+			},
+			Ok(DeadlineStatus::Meet(Err(_))) => {
+				finished(Ok(())).boxed()
+			},
+			Ok(DeadlineStatus::Timeout) => {
+				finished(Ok(())).boxed()
+			},
+			Err(_) => {
+				// network error
+				finished(Ok(())).boxed()
+			},
+		}
+	}
+
+	/// Process single message from the connection.
+	fn process_connection_message(data: Arc<ClusterData>, connection: Arc<Connection>, message: Message) {
+		connection.set_last_message_time(time::Instant::now());
+		trace!(target: "secretstore_net", "{}: processing message {} from {}", data.self_key_pair.public(), message, connection.node_id());
+		match message {
+			Message::Encryption(message) => ClusterCore::process_encryption_message(data, connection, message),
+			Message::Decryption(message) => ClusterCore::process_decryption_message(data, connection, message),
+			Message::Cluster(message) => ClusterCore::process_cluster_message(data, connection, message),
+		}
+	}
+
+	/// Process single encryption message from the connection.
+	fn process_encryption_message(data: Arc<ClusterData>, connection: Arc<Connection>, mut message: EncryptionMessage) {
+		let mut sender = connection.node_id().clone();
+		let mut is_queued_message = false;
+		let session_id = message.session_id().clone();
+		let key_check_timeout_ms = data.config.encryption_config.key_check_timeout_ms;
+		loop {
+			let result = match message {
+				EncryptionMessage::InitializeSession(ref message) => {
+					let mut connected_nodes = data.connections.connected_nodes();
+					connected_nodes.insert(data.self_key_pair.public().clone());
+
+					let cluster = Arc::new(ClusterView::new(data.clone(), connected_nodes));
+					let session_id: SessionId = message.session.clone().into();
+					data.sessions.new_encryption_session(sender.clone(), session_id.clone(), cluster)
+						.and_then(|s| s.on_initialize_session(sender.clone(), message))
+				},
+				EncryptionMessage::ConfirmInitialization(ref message) => data.sessions.encryption_session(&*message.session)
+					.ok_or(Error::InvalidSessionId)
+					.and_then(|s| s.on_confirm_initialization(sender.clone(), message)),
+				EncryptionMessage::CompleteInitialization(ref message) => data.sessions.encryption_session(&*message.session)
+					.ok_or(Error::InvalidSessionId)
+					.and_then(|s| s.on_complete_initialization(sender.clone(), message)),
+				EncryptionMessage::KeysDissemination(ref message) => data.sessions.encryption_session(&*message.session)
+					.ok_or(Error::InvalidSessionId)
+					.and_then(|s| {
+						// TODO: move this logic to session (or session connector)
+						let is_in_key_check_state = s.state() == EncryptionSessionState::KeyCheck;
+						let result = s.on_keys_dissemination(sender.clone(), message);
+						if !is_in_key_check_state && s.state() == EncryptionSessionState::KeyCheck {
+							let session = s.clone();
+							let d = data.clone();
+							data.handle.spawn(move |handle|
+								Timeout::new(time::Duration::new(key_check_timeout_ms / 1000, 0), handle)
+									.expect("failed to create timeout")
+									.and_then(move |_| {
+										if let Err(error) = session.start_key_generation_phase() {
+											session.on_session_error(d.self_key_pair.public().clone(), &message::SessionError {
+												session: session.id().clone().into(),
+												error: error.into(),
+											});
+										}
+										Ok(())
+									})
+									.then(|_| finished(()))
+							);
+						}
+
+						result
+					}),
+				EncryptionMessage::Complaint(ref message) => data.sessions.encryption_session(&*message.session)
+					.ok_or(Error::InvalidSessionId)
+					.and_then(|s| s.on_complaint(sender.clone(), message)),
+				EncryptionMessage::ComplaintResponse(ref message) => data.sessions.encryption_session(&*message.session)
+					.ok_or(Error::InvalidSessionId)
+					.and_then(|s| s.on_complaint_response(sender.clone(), message)),
+				EncryptionMessage::PublicKeyShare(ref message) => data.sessions.encryption_session(&*message.session)
+					.ok_or(Error::InvalidSessionId)
+					.and_then(|s| s.on_public_key_share(sender.clone(), message)),
+				EncryptionMessage::SessionError(ref message) => {
+						if let Some(s) = data.sessions.encryption_session(&*message.session) {
+							data.sessions.remove_encryption_session(s.id());
+							s.on_session_error(sender.clone(), message);
+						}
+						Ok(())
+					},
+				EncryptionMessage::SessionCompleted(ref message) => data.sessions.encryption_session(&*message.session)
+					.ok_or(Error::InvalidSessionId)
+					.and_then(|s| {
+						let result = s.on_session_completed(sender.clone(), message);
+						if result.is_ok() && s.state() == EncryptionSessionState::Finished {
+							data.sessions.remove_encryption_session(s.id());
+						}
+
+						result
+					}),
+			};
+
+			match result {
+				Err(Error::TooEarlyForRequest) => {
+					data.sessions.enqueue_encryption_message(&session_id, sender, message, is_queued_message);
+					break;
+				},
+				Err(err) => {
+					warn!(target: "secretstore_net", "{}: error {} when processing message {} from node {}", data.self_key_pair.public(), err, message, sender);
+					if let Some(connection) = data.connections.get(&sender) {
+						data.spawn(connection.send_message(Message::Encryption(EncryptionMessage::SessionError(message::SessionError {
+							session: session_id.clone().into(),
+							error: format!("{:?}", err),
+						}))));
+					}
+
+					if err != Error::InvalidSessionId {
+						data.sessions.remove_encryption_session(&session_id);
+					}
+					break;
+				},
+				_ => {
+					match data.sessions.dequeue_encryption_message(&session_id) {
+						Some((msg_sender, msg)) => {
+							is_queued_message = true;
+							sender = msg_sender;
+							message = msg;
+						},
+						None => break,
+					}
+				},
+			}
+		}
+	}
+
+	/// Process single decryption message from the connection.
+	fn process_decryption_message(data: Arc<ClusterData>, connection: Arc<Connection>, mut message: DecryptionMessage) {
+		let mut sender = connection.node_id().clone();
+		let mut is_queued_message = false;
+		let session_id = message.session_id().clone();
+		let sub_session_id = message.sub_session_id().clone();
+		loop {
+			let result = match message {
+				DecryptionMessage::InitializeDecryptionSession(ref message) => {
+					let mut connected_nodes = data.connections.connected_nodes();
+					connected_nodes.insert(data.self_key_pair.public().clone());
+
+					let cluster = Arc::new(ClusterView::new(data.clone(), connected_nodes));
+					data.sessions.new_decryption_session(sender.clone(), session_id.clone(), sub_session_id.clone(), cluster)
+						.and_then(|s| s.on_initialize_session(sender.clone(), message))
+				},
+				DecryptionMessage::ConfirmDecryptionInitialization(ref message) => data.sessions.decryption_session(&*message.session, &*message.sub_session)
+					.ok_or(Error::InvalidSessionId)
+					.and_then(|s| s.on_confirm_initialization(sender.clone(), message)),
+				DecryptionMessage::RequestPartialDecryption(ref message) => data.sessions.decryption_session(&*message.session, &*message.sub_session)
+					.ok_or(Error::InvalidSessionId)
+					.and_then(|s| s.on_partial_decryption_requested(sender.clone(), message)),
+				DecryptionMessage::PartialDecryption(ref message) => data.sessions.decryption_session(&*message.session, &*message.sub_session)
+					.ok_or(Error::InvalidSessionId)
+					.and_then(|s| s.on_partial_decryption(sender.clone(), message)),
+				DecryptionMessage::DecryptionSessionError(ref message) => {
+						if let Some(s) = data.sessions.decryption_session(&*message.session, &*message.sub_session) {
+							data.sessions.remove_decryption_session(&session_id, &sub_session_id);
+							s.on_session_error(sender.clone(), message);
+						}
+						Ok(())
+					},
+			};
+
+			match result {
+				Err(Error::TooEarlyForRequest) => {
+					data.sessions.enqueue_decryption_message(&session_id, &sub_session_id, sender, message, is_queued_message);
+					break;
+				},
+				Err(err) => {
+					if let Some(connection) = data.connections.get(&sender) {
+						data.spawn(connection.send_message(Message::Decryption(DecryptionMessage::DecryptionSessionError(message::DecryptionSessionError {
+							session: session_id.clone().into(),
+							sub_session: sub_session_id.clone().into(),
+							error: format!("{:?}", err),
+						}))));
+					}
+
+					if err != Error::InvalidSessionId {
+						data.sessions.remove_decryption_session(&session_id, &sub_session_id);
+					}
+					break;
+				},
+				_ => {
+					match data.sessions.dequeue_decryption_message(&session_id, &sub_session_id) {
+						Some((msg_sender, msg)) => {
+							is_queued_message = true;
+							sender = msg_sender;
+							message = msg;
+						},
+						None => break,
+					}
+				},
+			}
+		}
+	}
+
+	/// Process single cluster message from the connection.
+	fn process_cluster_message(data: Arc<ClusterData>, connection: Arc<Connection>, message: ClusterMessage) {
+		match message {
+			ClusterMessage::KeepAlive(_) => data.spawn(connection.send_message(Message::Cluster(ClusterMessage::KeepAliveResponse(message::KeepAliveResponse {})))),
+			ClusterMessage::KeepAliveResponse(_) => (),
+			_ => warn!(target: "secretstore_net", "{}: received unexpected message {} from node {} at {}", data.self_key_pair.public(), message, connection.node_id(), connection.node_address()),
+		}
+	}
+}
+
+impl ClusterConnections {
+	pub fn new(config: &ClusterConfiguration) -> Result<Self, Error> {
+		let mut connections = ClusterConnections {
+			self_node_id: config.self_key_pair.public().clone(),
+			nodes: BTreeMap::new(),
+			connections: RwLock::new(BTreeMap::new()),
+		};
+
+		for (node_id, &(ref node_addr, node_port)) in config.nodes.iter().filter(|&(node_id, _)| node_id != config.self_key_pair.public()) {
+			let socket_address = make_socket_address(&node_addr, node_port)?;
+			connections.nodes.insert(node_id.clone(), socket_address);
+		}
+
+		Ok(connections)
+	}
+
+	pub fn cluster_state(&self) -> ClusterState {
+		ClusterState {
+			connected: self.connections.read().keys().cloned().collect(),
+		}
+	}
+
+	pub fn get(&self, node: &NodeId) -> Option<Arc<Connection>> {
+		self.connections.read().get(node).cloned()
+	}
+
+	pub fn insert(&self, connection: Arc<Connection>) -> bool {
+		let mut connections = self.connections.write();
+		if connections.contains_key(connection.node_id()) {
+			// we have already connected to the same node
+			// the agreement is that node with lower id must establish connection to node with higher id
+			if (&self.self_node_id < connection.node_id() && connection.is_inbound())
+				|| (&self.self_node_id > connection.node_id() && !connection.is_inbound()) {
+				return false;
+			}
+		}
+		trace!(target: "secretstore_net", "{}: inserting connection to {} at {}", self.self_node_id, connection.node_id(), connection.node_address());
+		connections.insert(connection.node_id().clone(), connection);
+		true
+	}
+
+	pub fn remove(&self, node: &NodeId, is_inbound: bool) {
+		let mut connections = self.connections.write();
+		if let Entry::Occupied(entry) = connections.entry(node.clone()) {
+			if entry.get().is_inbound() != is_inbound {
+				return;
+			}
+
+			trace!(target: "secretstore_net", "{}: removing connection to {} at {}", self.self_node_id, entry.get().node_id(), entry.get().node_address());
+			entry.remove_entry();
+		}
+	}
+
+	pub fn connected_nodes(&self) -> BTreeSet<NodeId> {
+		self.connections.read().keys().cloned().collect()
+	}
+
+	pub fn active_connections(&self)-> Vec<Arc<Connection>> {
+		self.connections.read().values().cloned().collect()
+	}
+
+	pub fn disconnected_nodes(&self) -> BTreeMap<NodeId, SocketAddr> {
+		let connections = self.connections.read();
+		self.nodes.iter()
+			.filter(|&(node_id, _)| !connections.contains_key(node_id))
+			.map(|(node_id, node_address)| (node_id.clone(), node_address.clone()))
+			.collect()
+	}
+}
+
+impl ClusterSessions {
+	pub fn new(config: &ClusterConfiguration) -> Self {
+		ClusterSessions {
+			self_node_id: config.self_key_pair.public().clone(),
+			acl_storage: config.acl_storage.clone(),
+			key_storage: config.key_storage.clone(),
+			encryption_sessions: RwLock::new(BTreeMap::new()),
+			decryption_sessions: RwLock::new(BTreeMap::new()),
+		}
+	}
+
+	pub fn new_encryption_session(&self, _master: NodeId, session_id: SessionId, cluster: Arc<Cluster>) -> Result<Arc<EncryptionSessionImpl>, Error> {
+		let mut encryption_sessions = self.encryption_sessions.write();
+		if encryption_sessions.contains_key(&session_id) {
+			return Err(Error::DuplicateSessionId);
+		}
+
+		let session = Arc::new(EncryptionSessionImpl::new(EncryptionSessionParams {
+			id: session_id.clone(),
+			self_node_id: self.self_node_id.clone(),
+			key_storage: self.key_storage.clone(),
+			cluster: cluster,
+		}));
+		let encryption_session = QueuedEncryptionSession {
+			session: session.clone(),
+			queue: VecDeque::new()
+		};
+		encryption_sessions.insert(session_id, encryption_session);
+		Ok(session)
+	}
+
+	pub fn remove_encryption_session(&self, session_id: &SessionId) {
+		self.encryption_sessions.write().remove(session_id);
+	}
+
+	pub fn encryption_session(&self, session_id: &SessionId) -> Option<Arc<EncryptionSessionImpl>> {
+		self.encryption_sessions.read().get(session_id).map(|s| s.session.clone())
+	}
+
+	pub fn enqueue_encryption_message(&self, session_id: &SessionId, sender: NodeId, message: EncryptionMessage, is_queued_message: bool) {
+		self.encryption_sessions.write().get_mut(session_id)
+			.map(|session| if is_queued_message { session.queue.push_front((sender, message)) }
+				else { session.queue.push_back((sender, message)) });
+	}
+
+	pub fn dequeue_encryption_message(&self, session_id: &SessionId) -> Option<(NodeId, EncryptionMessage)> {
+		self.encryption_sessions.write().get_mut(session_id)
+			.and_then(|session| session.queue.pop_front())
+	}
+
+	pub fn new_decryption_session(&self, _master: NodeId, session_id: SessionId, sub_session_id: Secret, cluster: Arc<Cluster>) -> Result<Arc<DecryptionSessionImpl>, Error> {
+		let mut decryption_sessions = self.decryption_sessions.write();
+		let session_id = DecryptionSessionId::new(session_id, sub_session_id);
+		if decryption_sessions.contains_key(&session_id) {
+			return Err(Error::DuplicateSessionId);
+		}
+
+		let session = Arc::new(DecryptionSessionImpl::new(DecryptionSessionParams {
+			id: session_id.id.clone(),
+			access_key: session_id.access_key.clone(),
+			self_node_id: self.self_node_id.clone(),
+			encrypted_data: self.key_storage.get(&session_id.id).map_err(|e| Error::KeyStorage(e.into()))?,
+			acl_storage: self.acl_storage.clone(),
+			cluster: cluster,
+		})?);
+		let decryption_session = QueuedDecryptionSession {
+			session: session.clone(),
+			queue: VecDeque::new()
+		};
+		decryption_sessions.insert(session_id, decryption_session);
+		Ok(session)
+	}
+
+	pub fn remove_decryption_session(&self, session_id: &SessionId, sub_session_id: &Secret) {
+		let session_id = DecryptionSessionId::new(session_id.clone(), sub_session_id.clone());
+		self.decryption_sessions.write().remove(&session_id);
+	}
+
+	pub fn decryption_session(&self, session_id: &SessionId, sub_session_id: &Secret) -> Option<Arc<DecryptionSessionImpl>> {
+		let session_id = DecryptionSessionId::new(session_id.clone(), sub_session_id.clone());
+		self.decryption_sessions.read().get(&session_id).map(|s| s.session.clone())
+	}
+
+	pub fn enqueue_decryption_message(&self, session_id: &SessionId, sub_session_id: &Secret, sender: NodeId, message: DecryptionMessage, is_queued_message: bool) {
+		let session_id = DecryptionSessionId::new(session_id.clone(), sub_session_id.clone());
+		self.decryption_sessions.write().get_mut(&session_id)
+			.map(|session| if is_queued_message { session.queue.push_front((sender, message)) }
+				else { session.queue.push_back((sender, message)) });
+	}
+
+	pub fn dequeue_decryption_message(&self, session_id: &SessionId, sub_session_id: &Secret) -> Option<(NodeId, DecryptionMessage)> {
+		let session_id = DecryptionSessionId::new(session_id.clone(), sub_session_id.clone());
+		self.decryption_sessions.write().get_mut(&session_id)
+			.and_then(|session| session.queue.pop_front())
+	}
+
+	pub fn on_connection_timeout(&self, node_id: &NodeId) {
+		for encryption_session in self.encryption_sessions.read().values() {
+			encryption_session.session.on_session_timeout(node_id);
+		}
+		for decryption_session in self.decryption_sessions.read().values() {
+			decryption_session.session.on_session_timeout(node_id);
+		}
+	}
+}
+
+impl ClusterData {
+	pub fn new(handle: &Handle, config: ClusterConfiguration, connections: ClusterConnections, sessions: ClusterSessions) -> Arc<Self> {
+		Arc::new(ClusterData {
+			handle: handle.remote().clone(),
+			pool: CpuPool::new(config.threads),
+			self_key_pair: config.self_key_pair.clone(),
+			connections: connections,
+			sessions: sessions,
+			config: config,
+		})
+	}
+
+	/// Get connection to given node.
+	pub fn connection(&self, node: &NodeId) -> Option<Arc<Connection>> {
+		self.connections.get(node)
+	}
+
+	/// Spawns a future using thread pool and schedules execution of it with event loop handle.
+	pub fn spawn<F>(&self, f: F) where F: Future + Send + 'static, F::Item: Send + 'static, F::Error: Send + 'static {
+		let pool_work = self.pool.spawn(f);
+		self.handle.spawn(move |_handle| {
+			pool_work.then(|_| finished(()))
+		})
+	}
+}
+
+impl Connection {
+	pub fn new(is_inbound: bool, connection: NetConnection) -> Arc<Connection> {
+		Arc::new(Connection {
+			node_id: connection.node_id,
+			node_address: connection.address,
+			is_inbound: is_inbound,
+			stream: connection.stream,
+			key: connection.key,
+			last_message_time: Mutex::new(time::Instant::now()),
+		})
+	}
+
+	pub fn is_inbound(&self) -> bool {
+		self.is_inbound
+	}
+
+	pub fn node_id(&self) -> &NodeId {
+		&self.node_id
+	}
+
+	pub fn last_message_time(&self) -> time::Instant {
+		*self.last_message_time.lock()
+	}
+
+	pub fn set_last_message_time(&self, last_message_time: time::Instant) {
+		*self.last_message_time.lock() = last_message_time;
+	}
+
+	pub fn node_address(&self) -> &SocketAddr {
+		&self.node_address
+	}
+
+	pub fn send_message(&self, message: Message) -> WriteMessage<SharedTcpStream> {
+		write_encrypted_message(self.stream.clone(), &self.key, message)
+	}
+
+	pub fn read_message(&self) -> ReadMessage<SharedTcpStream> {
+		read_encrypted_message(self.stream.clone(), self.key.clone())
+	}
+}
+
+impl ClusterView {
+	pub fn new(cluster: Arc<ClusterData>, nodes: BTreeSet<NodeId>) -> Self {
+		ClusterView {
+			core: Arc::new(Mutex::new(ClusterViewCore {
+				cluster: cluster,
+				nodes: nodes,
+			})),
+		}
+	}
+}
+
+impl Cluster for ClusterView {
+	fn broadcast(&self, message: Message) -> Result<(), Error> {
+		let core = self.core.lock();
+		for node in core.nodes.iter().filter(|n| *n != core.cluster.self_key_pair.public()) {
+			let connection = core.cluster.connection(node).ok_or(Error::NodeDisconnected)?;
+			core.cluster.spawn(connection.send_message(message.clone()))
+		}
+		Ok(())
+	}
+
+	fn send(&self, to: &NodeId, message: Message) -> Result<(), Error> {
+		let core = self.core.lock();
+		let connection = core.cluster.connection(to).ok_or(Error::NodeDisconnected)?;
+		core.cluster.spawn(connection.send_message(message));
+		Ok(())
+	}
+
+	fn blacklist(&self, _node: &NodeId) {
+		// TODO: unimplemented!()
+	}
+}
+
+impl ClusterClientImpl {
+	pub fn new(data: Arc<ClusterData>) -> Self {
+		ClusterClientImpl {
+			data: data,
+		}
+	}
+}
+
+impl ClusterClient for ClusterClientImpl {
+	fn cluster_state(&self) -> ClusterState {
+		self.data.connections.cluster_state()
+	}
+
+	fn new_encryption_session(&self, session_id: SessionId, threshold: usize) -> Result<Arc<EncryptionSession>, Error> {
+		let mut connected_nodes = self.data.connections.connected_nodes();
+		connected_nodes.insert(self.data.self_key_pair.public().clone());
+
+		let cluster = Arc::new(ClusterView::new(self.data.clone(), connected_nodes.clone()));
+		let session = self.data.sessions.new_encryption_session(self.data.self_key_pair.public().clone(), session_id, cluster)?;
+		session.initialize(threshold, connected_nodes)?;
+		Ok(session)
+	}
+
+	fn new_decryption_session(&self, session_id: SessionId, requestor_signature: Signature) -> Result<Arc<DecryptionSession>, Error> {
+		let mut connected_nodes = self.data.connections.connected_nodes();
+		connected_nodes.insert(self.data.self_key_pair.public().clone());
+
+		let access_key = Random.generate()?.secret().clone();
+		let cluster = Arc::new(ClusterView::new(self.data.clone(), connected_nodes.clone()));
+		let session = self.data.sessions.new_decryption_session(self.data.self_key_pair.public().clone(), session_id, access_key, cluster)?;
+		session.initialize(requestor_signature)?;
+		Ok(session)
+	}
+}
+
+fn make_socket_address(address: &str, port: u16) -> Result<SocketAddr, Error> {
+	let ip_address: IpAddr = address.parse().map_err(|_| Error::InvalidNodeAddress)?;
+	Ok(SocketAddr::new(ip_address, port))
+}
+
 #[cfg(test)]
 pub mod tests {
+	use std::sync::Arc;
+	use std::time;
 	use std::collections::VecDeque;
 	use parking_lot::Mutex;
-	use key_server_cluster::{NodeId, Error};
+	use tokio_core::reactor::Core;
+	use ethkey::{Random, Generator};
+	use key_server_cluster::{NodeId, Error, EncryptionConfiguration, DummyAclStorage, DummyKeyStorage};
 	use key_server_cluster::message::Message;
-	use key_server_cluster::cluster::Cluster;
+	use key_server_cluster::cluster::{Cluster, ClusterCore, ClusterConfiguration};
 
 	#[derive(Debug)]
 	pub struct DummyCluster {
@@ -87,4 +946,61 @@ pub mod tests {
 		fn blacklist(&self, _node: &NodeId) {
 		}
 	}
+
+	pub fn loop_until<F>(core: &mut Core, timeout: time::Duration, predicate: F) where F: Fn() -> bool {
+		let start = time::Instant::now();
+		loop {
+			core.turn(Some(time::Duration::from_millis(1)));
+			if predicate() {
+				break;
+			}
+
+			if time::Instant::now() - start > timeout {
+				panic!("no result in {:?}", timeout);
+			}
+		}
+	}
+
+	pub fn all_connections_established(cluster: &Arc<ClusterCore>) -> bool {
+		cluster.config().nodes.keys()
+			.filter(|p| *p != cluster.config().self_key_pair.public())
+			.all(|p| cluster.connection(p).is_some())
+	}
+
+	pub fn make_clusters(core: &Core, ports_begin: u16, num_nodes: usize) -> Vec<Arc<ClusterCore>> {
+		let key_pairs: Vec<_> = (0..num_nodes).map(|_| Random.generate().unwrap()).collect();
+		let cluster_params: Vec<_> = (0..num_nodes).map(|i| ClusterConfiguration {
+			threads: 1,
+			self_key_pair: key_pairs[i].clone(),
+			listen_address: ("127.0.0.1".to_owned(), ports_begin + i as u16),
+			nodes: key_pairs.iter().enumerate()
+				.map(|(j, kp)| (kp.public().clone(), ("127.0.0.1".into(), ports_begin + j as u16)))
+				.collect(),
+			allow_connecting_to_higher_nodes: false,
+			encryption_config: EncryptionConfiguration {
+				key_check_timeout_ms: 10,
+			},
+			key_storage: Arc::new(DummyKeyStorage::default()),
+			acl_storage: Arc::new(DummyAclStorage::default()),
+		}).collect();
+		let clusters: Vec<_> = cluster_params.into_iter().enumerate()
+			.map(|(_, params)| ClusterCore::new(core.handle(), params).unwrap())
+			.collect();
+
+		clusters
+	}
+
+	pub fn run_clusters(clusters: &[Arc<ClusterCore>]) {
+		for cluster in clusters {
+			cluster.run().unwrap();
+		}
+	}
+
+	#[test]
+	fn cluster_connects_to_other_nodes() {
+		let mut core = Core::new().unwrap();
+		let clusters = make_clusters(&core, 6010, 3);
+		run_clusters(&clusters);
+		loop_until(&mut core, time::Duration::from_millis(300), || clusters.iter().all(all_connections_established));
+	}
 }

secret_store/src/key_server_cluster/decryption_session.rs

@@ -14,15 +14,22 @@
 // You should have received a copy of the GNU General Public License
 // along with Parity.  If not, see <http://www.gnu.org/licenses/>.
 
+use std::cmp::{Ord, PartialOrd, Ordering};
 use std::collections::{BTreeSet, BTreeMap};
 use std::sync::Arc;
-use parking_lot::Mutex;
+use parking_lot::{Mutex, Condvar};
 use ethkey::{self, Secret, Public, Signature};
-use key_server_cluster::{Error, AclStorage, EncryptedData, NodeId, SessionId};
+use key_server_cluster::{Error, AclStorage, DocumentKeyShare, NodeId, SessionId};
 use key_server_cluster::cluster::Cluster;
 use key_server_cluster::math;
-use key_server_cluster::message::{Message, InitializeDecryptionSession, ConfirmDecryptionInitialization,
+use key_server_cluster::message::{Message, DecryptionMessage, InitializeDecryptionSession, ConfirmDecryptionInitialization,
-	RequestPartialDecryption, PartialDecryption};
+	RequestPartialDecryption, PartialDecryption, DecryptionSessionError};
+
+/// Decryption session API.
+pub trait Session: Send + Sync + 'static {
+	/// Wait until session is completed. Returns distributely restored secret key.
+	fn wait(&self) -> Result<Public, Error>;
+}
 
 /// Distributed decryption session.
 /// Based on "ECDKG: A Distributed Key Generation Protocol Based on Elliptic Curve Discrete Logarithm" paper:
@@ -32,7 +39,7 @@ use key_server_cluster::message::{Message, InitializeDecryptionSession, ConfirmD
 /// 2) ACL check: all nodes which have received the request are querying ACL-contract to check if requestor has access to the document
 /// 3) partial decryption: every node which has succussfully checked access for the requestor do a partial decryption
 /// 4) decryption: master node receives all partial decryptions of the secret and restores the secret
-pub struct Session {
+pub struct SessionImpl {
 	/// Encryption session id.
 	id: SessionId,
 	/// Decryption session access key.
@@ -40,25 +47,36 @@ pub struct Session {
 	/// Public identifier of this node.
 	self_node_id: NodeId,
 	/// Encrypted data.
-	encrypted_data: EncryptedData,
+	encrypted_data: DocumentKeyShare,
 	/// ACL storate to check access to the resource.
 	acl_storage: Arc<AclStorage>,
 	/// Cluster which allows this node to send messages to other nodes in the cluster.
 	cluster: Arc<Cluster>,
+	/// SessionImpl completion condvar.
+	completed: Condvar,
 	/// Mutable session data.
 	data: Mutex<SessionData>,
 }
 
-/// Session creation parameters
+/// Decryption session Id.
-pub struct SessionParams {
+#[derive(Debug, Clone, PartialEq, Eq)]
-	/// Session identifier.
+pub struct DecryptionSessionId {
+	/// Encryption session id.
 	pub id: SessionId,
-	/// Session access key.
+	/// Decryption session access key.
+	pub access_key: Secret,
+}
+
+/// SessionImpl creation parameters
+pub struct SessionParams {
+	/// SessionImpl identifier.
+	pub id: SessionId,
+	/// SessionImpl access key.
 	pub access_key: Secret,
 	/// Id of node, on which this session is running.
 	pub self_node_id: Public,
-	/// Encrypted data (result of running encryption_session::Session).
+	/// Encrypted data (result of running encryption_session::SessionImpl).
-	pub encrypted_data: EncryptedData,
+	pub encrypted_data: DocumentKeyShare,
 	/// ACL storage.
 	pub acl_storage: Arc<AclStorage>,
 	/// Cluster
@@ -91,16 +109,11 @@ struct SessionData {
 
 	/// === Values, filled during final decryption ===
 	/// Decrypted secret
-	decrypted_secret: Option<Public>,
+	decrypted_secret: Option<Result<Public, Error>>,
-}
-
-#[derive(Debug)]
-struct NodeData {
-	/// Node-generated shadow point.
-	shadow_point: Option<Public>,
 }
 
 #[derive(Debug, Clone, PartialEq)]
+/// Decryption session data.
 pub enum SessionState {
 	/// Every node starts in this state.
 	WaitingForInitialization,
@@ -116,18 +129,19 @@ pub enum SessionState {
 	Failed,
 }
 
-impl Session {
+impl SessionImpl {
 	/// Create new decryption session.
 	pub fn new(params: SessionParams) -> Result<Self, Error> {
 		check_encrypted_data(&params.self_node_id, &params.encrypted_data)?;
 
-		Ok(Session {
+		Ok(SessionImpl {
 			id: params.id,
 			access_key: params.access_key,
 			self_node_id: params.self_node_id,
 			encrypted_data: params.encrypted_data,
 			acl_storage: params.acl_storage,
 			cluster: params.cluster,
+			completed: Condvar::new(),
 			data: Mutex::new(SessionData {
 				state: SessionState::WaitingForInitialization,
 				master: None,
@@ -146,19 +160,22 @@ impl Session {
 		&self.self_node_id
 	}
 
+	#[cfg(test)]
 	/// Get this session access key.
 	pub fn access_key(&self) -> &Secret {
 		&self.access_key
 	}
 
+	#[cfg(test)]
 	/// Get current session state.
 	pub fn state(&self) -> SessionState {
 		self.data.lock().state.clone()
 	}
 
+	#[cfg(test)]
 	/// Get decrypted secret
 	pub fn decrypted_secret(&self) -> Option<Public> {
-		self.data.lock().decrypted_secret.clone()
+		self.data.lock().decrypted_secret.clone().and_then(|r| r.ok())
 	}
 
 	/// Initialize decryption session.
@@ -188,15 +205,20 @@ impl Session {
 			// not enough nodes => pass initialization message to all other nodes
 			SessionState::WaitingForInitializationConfirm => {
 				for node in self.encrypted_data.id_numbers.keys().filter(|n| *n != self.node()) {
-					self.cluster.send(node, Message::InitializeDecryptionSession(InitializeDecryptionSession {
+					self.cluster.send(node, Message::Decryption(DecryptionMessage::InitializeDecryptionSession(InitializeDecryptionSession {
-							session: self.id.clone(),
+							session: self.id.clone().into(),
-							sub_session: self.access_key.clone(),
+							sub_session: self.access_key.clone().into(),
-							requestor_signature: requestor_signature.clone(),
+							requestor_signature: requestor_signature.clone().into(),
-						}))?;
+						})))?;
 				}
 			},
 			// we can decrypt data on our own
-			SessionState::WaitingForPartialDecryption => unimplemented!(),
+			SessionState::WaitingForPartialDecryption => {
+				data.confirmed_nodes.insert(self.node().clone());
+				SessionImpl::start_waiting_for_partial_decryption(self.node().clone(), self.id.clone(), self.access_key.clone(), &self.cluster, &self.encrypted_data, &mut *data)?;
+				SessionImpl::do_decryption(self.access_key.clone(), &self.encrypted_data, &mut *data)?;
+				self.completed.notify_all();
+			},
 			// we can not decrypt data
 			SessionState::Failed => (),
 			// cannot reach other states
@@ -207,9 +229,9 @@ impl Session {
 	}
 
 	/// When session initialization message is received.
-	pub fn on_initialize_session(&self, sender: NodeId, message: InitializeDecryptionSession) -> Result<(), Error> {
+	pub fn on_initialize_session(&self, sender: NodeId, message: &InitializeDecryptionSession) -> Result<(), Error> {
-		debug_assert!(self.id == message.session);
+		debug_assert!(self.id == *message.session);
-		debug_assert!(self.access_key == message.sub_session);
+		debug_assert!(self.access_key == *message.sub_session);
 		debug_assert!(&sender != self.node());
 
 		let mut data = self.data.lock();
@@ -230,17 +252,17 @@ impl Session {
 
 		// respond to master node
 		data.master = Some(sender.clone());
-		self.cluster.send(&sender, Message::ConfirmDecryptionInitialization(ConfirmDecryptionInitialization {
+		self.cluster.send(&sender, Message::Decryption(DecryptionMessage::ConfirmDecryptionInitialization(ConfirmDecryptionInitialization {
-			session: self.id.clone(),
+			session: self.id.clone().into(),
-			sub_session: self.access_key.clone(),
+			sub_session: self.access_key.clone().into(),
 			is_confirmed: is_requestor_allowed_to_read,
-		}))
+		})))
 	}
 
 	/// When session initialization confirmation message is reeived.
-	pub fn on_confirm_initialization(&self, sender: NodeId, message: ConfirmDecryptionInitialization) -> Result<(), Error> {
+	pub fn on_confirm_initialization(&self, sender: NodeId, message: &ConfirmDecryptionInitialization) -> Result<(), Error> {
-		debug_assert!(self.id == message.session);
+		debug_assert!(self.id == *message.session);
-		debug_assert!(self.access_key == message.sub_session);
+		debug_assert!(self.access_key == *message.sub_session);
 		debug_assert!(&sender != self.node());
 
 		let mut data = self.data.lock();
@@ -260,26 +282,8 @@ impl Session {
 			// we do not yet have enough nodes for decryption
 			SessionState::WaitingForInitializationConfirm => Ok(()),
 			// we have enough nodes for decryption
-			SessionState::WaitingForPartialDecryption => {
+			SessionState::WaitingForPartialDecryption =>
-				let confirmed_nodes: BTreeSet<_> = data.confirmed_nodes.clone();
+				SessionImpl::start_waiting_for_partial_decryption(self.node().clone(), self.id.clone(), self.access_key.clone(), &self.cluster, &self.encrypted_data, &mut *data),
-				for node in data.confirmed_nodes.iter().filter(|n| n != &self.node()) {
-					self.cluster.send(node, Message::RequestPartialDecryption(RequestPartialDecryption {
-						session: self.id.clone(),
-						sub_session: self.access_key.clone(),
-						nodes: confirmed_nodes.clone(),
-					}))?;
-				}
-
-				assert!(data.confirmed_nodes.remove(self.node()));
-
-				let shadow_point = {
-					let requestor = data.requestor.as_ref().expect("requestor public is filled during initialization; WaitingForPartialDecryption follows initialization; qed");
-					do_partial_decryption(self.node(), &requestor, &data.confirmed_nodes, &self.access_key, &self.encrypted_data)?
-				};
-				data.shadow_points.insert(self.node().clone(), shadow_point);
-
-				Ok(())
-			},
 			// we can not have enough nodes for decryption
 			SessionState::Failed => Ok(()),
 			// cannot reach other states
@@ -288,9 +292,9 @@ impl Session {
 	}
 
 	/// When partial decryption is requested.
-	pub fn on_partial_decryption_requested(&self, sender: NodeId, message: RequestPartialDecryption) -> Result<(), Error> {
+	pub fn on_partial_decryption_requested(&self, sender: NodeId, message: &RequestPartialDecryption) -> Result<(), Error> {
-		debug_assert!(self.id == message.session);
+		debug_assert!(self.id == *message.session);
-		debug_assert!(self.access_key == message.sub_session);
+		debug_assert!(self.access_key == *message.sub_session);
 		debug_assert!(&sender != self.node());
 
 		// check message
@@ -311,13 +315,13 @@ impl Session {
 		// calculate shadow point
 		let shadow_point = {
 			let requestor = data.requestor.as_ref().expect("requestor public is filled during initialization; WaitingForPartialDecryptionRequest follows initialization; qed");
-			do_partial_decryption(self.node(), &requestor, &message.nodes, &self.access_key, &self.encrypted_data)?
+			do_partial_decryption(self.node(), &requestor, &message.nodes.iter().cloned().map(Into::into).collect(), &self.access_key, &self.encrypted_data)?
 		};
-		self.cluster.send(&sender, Message::PartialDecryption(PartialDecryption {
+		self.cluster.send(&sender, Message::Decryption(DecryptionMessage::PartialDecryption(PartialDecryption {
-			session: self.id.clone(),
+			session: self.id.clone().into(),
-			sub_session: self.access_key.clone(),
+			sub_session: self.access_key.clone().into(),
-			shadow_point: shadow_point,
+			shadow_point: shadow_point.into(),
-		}))?;
+		})))?;
 
 		// update sate
 		data.state = SessionState::Finished;
@@ -326,9 +330,9 @@ impl Session {
 	}
 
 	/// When partial decryption is received.
-	pub fn on_partial_decryption(&self, sender: NodeId, message: PartialDecryption) -> Result<(), Error> {
+	pub fn on_partial_decryption(&self, sender: NodeId, message: &PartialDecryption) -> Result<(), Error> {
-		debug_assert!(self.id == message.session);
+		debug_assert!(self.id == *message.session);
-		debug_assert!(self.access_key == message.sub_session);
+		debug_assert!(self.access_key == *message.sub_session);
 		debug_assert!(&sender != self.node());
 
 		let mut data = self.data.lock();
@@ -341,24 +345,113 @@ impl Session {
 		if !data.confirmed_nodes.remove(&sender) {
 			return Err(Error::InvalidStateForRequest);
 		}
-		data.shadow_points.insert(sender, message.shadow_point);
+		data.shadow_points.insert(sender, message.shadow_point.clone().into());
 
 		// check if we have enough shadow points to decrypt the secret
 		if data.shadow_points.len() != self.encrypted_data.threshold + 1 {
 			return Ok(());
 		}
 
+		SessionImpl::do_decryption(self.access_key.clone(), &self.encrypted_data, &mut *data)?;
+		self.completed.notify_all();
+
+		Ok(())
+	}
+
+	/// When error has occured on another node.
+	pub fn on_session_error(&self, sender: NodeId, message: &DecryptionSessionError) {
+		warn!("{}: decryption session error: {:?} from {}", self.node(), message, sender);
+		let mut data = self.data.lock();
+		data.state = SessionState::Failed;
+		data.decrypted_secret = Some(Err(Error::Io(message.error.clone())));
+		self.completed.notify_all();
+	}
+
+	/// When session timeout has occured.
+	pub fn on_session_timeout(&self, _node: &NodeId) {
+		warn!("{}: decryption session timeout", self.node());
+		let mut data = self.data.lock();
+		// TODO: check that node is a part of decryption process
+		data.state = SessionState::Failed;
+		data.decrypted_secret = Some(Err(Error::Io("session expired".into())));
+		self.completed.notify_all();
+	}
+
+	fn start_waiting_for_partial_decryption(self_node_id: NodeId, session_id: SessionId, access_key: Secret, cluster: &Arc<Cluster>, encrypted_data: &DocumentKeyShare, data: &mut SessionData) -> Result<(), Error> {
+		let confirmed_nodes: BTreeSet<_> = data.confirmed_nodes.clone();
+		for node in data.confirmed_nodes.iter().filter(|n| n != &&self_node_id) {
+			cluster.send(node, Message::Decryption(DecryptionMessage::RequestPartialDecryption(RequestPartialDecryption {
+				session: session_id.clone().into(),
+				sub_session: access_key.clone().into(),
+				nodes: confirmed_nodes.iter().cloned().map(Into::into).collect(),
+			})))?;
+		}
+
+		assert!(data.confirmed_nodes.remove(&self_node_id));
+
+		let shadow_point = {
+			let requestor = data.requestor.as_ref().expect("requestor public is filled during initialization; WaitingForPartialDecryption follows initialization; qed");
+			do_partial_decryption(&self_node_id, &requestor, &data.confirmed_nodes, &access_key, &encrypted_data)?
+		};
+		data.shadow_points.insert(self_node_id.clone(), shadow_point);
+
+		Ok(())
+	}
+
+	fn do_decryption(access_key: Secret, encrypted_data: &DocumentKeyShare, data: &mut SessionData) -> Result<(), Error> {
 		// decrypt the secret using shadow points
 		let joint_shadow_point = math::compute_joint_shadow_point(data.shadow_points.values())?;
-		let decrypted_secret = math::decrypt_with_joint_shadow(&self.access_key, &self.encrypted_data.encrypted_point, &joint_shadow_point)?;
+		let decrypted_secret = math::decrypt_with_joint_shadow(encrypted_data.threshold, &access_key, &encrypted_data.encrypted_point, &joint_shadow_point)?;
-		data.decrypted_secret = Some(decrypted_secret);
+		data.decrypted_secret = Some(Ok(decrypted_secret));
+
+		// switch to completed state
 		data.state = SessionState::Finished;
 
 		Ok(())
 	}
 }
 
-fn check_encrypted_data(self_node_id: &Public, encrypted_data: &EncryptedData) -> Result<(), Error> {
+impl Session for SessionImpl {
+	fn wait(&self) -> Result<Public, Error> {
+		let mut data = self.data.lock();
+		if !data.decrypted_secret.is_some() {
+			self.completed.wait(&mut data);
+		}
+
+		data.decrypted_secret.as_ref()
+			.expect("checked above or waited for completed; completed is only signaled when decrypted_secret.is_some(); qed")
+			.clone()
+	}
+}
+
+impl DecryptionSessionId {
+	/// Create new decryption session Id.
+	pub fn new(session_id: SessionId, sub_session_id: Secret) -> Self {
+		DecryptionSessionId {
+			id: session_id,
+			access_key: sub_session_id,
+		}
+	}
+}
+
+impl PartialOrd for DecryptionSessionId {
+	fn partial_cmp(&self, other: &Self) -> Option<Ordering> {
+		Some(self.cmp(other))
+	}
+}
+
+
+impl Ord for DecryptionSessionId {
+	fn cmp(&self, other: &Self) -> Ordering {
+		match self.id.cmp(&other.id) {
+			Ordering::Equal => self.access_key.cmp(&other.access_key),
+			r @ _ => r,
+		}
+	}
+}
+
+
+fn check_encrypted_data(self_node_id: &Public, encrypted_data: &DocumentKeyShare) -> Result<(), Error> {
 	use key_server_cluster::encryption_session::{check_cluster_nodes, check_threshold};
 
 	let nodes = encrypted_data.id_numbers.keys().cloned().collect();
@@ -368,7 +461,7 @@ fn check_encrypted_data(self_node_id: &Public, encrypted_data: &EncryptedData) -
 	Ok(())
 }
 
-fn process_initialization_response(encrypted_data: &EncryptedData, data: &mut SessionData, node: &NodeId, check_result: bool) -> Result<(), Error> {
+fn process_initialization_response(encrypted_data: &DocumentKeyShare, data: &mut SessionData, node: &NodeId, check_result: bool) -> Result<(), Error> {
 	if !data.requested_nodes.remove(node) {
 		return Err(Error::InvalidMessage);
 	}
@@ -395,7 +488,7 @@ fn process_initialization_response(encrypted_data: &EncryptedData, data: &mut Se
 	Ok(())
 }
 
-fn do_partial_decryption(node: &NodeId, _requestor_public: &Public, participants: &BTreeSet<NodeId>, access_key: &Secret, encrypted_data: &EncryptedData) -> Result<Public, Error> {
+fn do_partial_decryption(node: &NodeId, _requestor_public: &Public, participants: &BTreeSet<NodeId>, access_key: &Secret, encrypted_data: &DocumentKeyShare) -> Result<Public, Error> {
 	let node_id_number = &encrypted_data.id_numbers[node];
 	let node_secret_share = &encrypted_data.secret_share;
 	let other_id_numbers = participants.iter()
@@ -409,43 +502,42 @@ fn do_partial_decryption(node: &NodeId, _requestor_public: &Public, participants
 #[cfg(test)]
 mod tests {
 	use std::sync::Arc;
-	use std::str::FromStr;
 	use std::collections::BTreeMap;
 	use super::super::super::acl_storage::DummyAclStorage;
 	use ethkey::{self, Random, Generator, Public, Secret};
-	use key_server_cluster::{NodeId, EncryptedData, SessionId, Error};
+	use key_server_cluster::{NodeId, DocumentKeyShare, SessionId, Error};
 	use key_server_cluster::cluster::tests::DummyCluster;
-	use key_server_cluster::decryption_session::{Session, SessionParams, 	SessionState};
+	use key_server_cluster::decryption_session::{SessionImpl, SessionParams, SessionState};
-	use key_server_cluster::message::{self, Message};
+	use key_server_cluster::message::{self, Message, DecryptionMessage};
 
 	const SECRET_PLAIN: &'static str = "d2b57ae7619e070af0af6bc8c703c0cd27814c54d5d6a999cacac0da34ede279ca0d9216e85991029e54e2f0c92ee0bd30237725fa765cbdbfc4529489864c5f";
 
-	fn prepare_decryption_sessions() -> (Vec<Arc<DummyCluster>>, Vec<Arc<DummyAclStorage>>, Vec<Session>) {
+	fn prepare_decryption_sessions() -> (Vec<Arc<DummyCluster>>, Vec<Arc<DummyAclStorage>>, Vec<SessionImpl>) {
 		// prepare encrypted data + cluster configuration for scheme 4-of-5
 		let session_id = SessionId::default();
 		let access_key = Random.generate().unwrap().secret().clone();
-		let secret_shares = vec![
+		let secret_shares: Vec<Secret> = vec![
-			Secret::from_str("834cb736f02d9c968dfaf0c37658a1d86ff140554fc8b59c9fdad5a8cf810eec").unwrap(),
+			"834cb736f02d9c968dfaf0c37658a1d86ff140554fc8b59c9fdad5a8cf810eec".parse().unwrap(),
-			Secret::from_str("5a3c1d90fafafa66bb808bcc464354a98b05e6b2c95b5f609d4511cdd1b17a0b").unwrap(),
+			"5a3c1d90fafafa66bb808bcc464354a98b05e6b2c95b5f609d4511cdd1b17a0b".parse().unwrap(),
-			Secret::from_str("71bf61e7848e08e3a8486c308ce521bdacfebcf9116a0151447eb301f3a2d0e9").unwrap(),
+			"71bf61e7848e08e3a8486c308ce521bdacfebcf9116a0151447eb301f3a2d0e9".parse().unwrap(),
-			Secret::from_str("80c0e5e2bea66fa9b2e07f7ce09630a9563e8242446d5ee63221feb09c4338f4").unwrap(),
+			"80c0e5e2bea66fa9b2e07f7ce09630a9563e8242446d5ee63221feb09c4338f4".parse().unwrap(),
-			Secret::from_str("c06546b5669877ba579ca437a5602e89425c53808c708d44ccd6afcaa4610fad").unwrap(),
+			"c06546b5669877ba579ca437a5602e89425c53808c708d44ccd6afcaa4610fad".parse().unwrap(),
 		];
 		let id_numbers: Vec<(NodeId, Secret)> = vec![
 			("b486d3840218837b035c66196ecb15e6b067ca20101e11bd5e626288ab6806ecc70b8307012626bd512bad1559112d11d21025cef48cc7a1d2f3976da08f36c8".into(),
-				Secret::from_str("281b6bf43cb86d0dc7b98e1b7def4a80f3ce16d28d2308f934f116767306f06c").unwrap()),
+				"281b6bf43cb86d0dc7b98e1b7def4a80f3ce16d28d2308f934f116767306f06c".parse().unwrap()),
 			("1395568277679f7f583ab7c0992da35f26cde57149ee70e524e49bdae62db3e18eb96122501e7cbb798b784395d7bb5a499edead0706638ad056d886e56cf8fb".into(),
-				Secret::from_str("00125d85a05e5e63e214cb60fe63f132eec8a103aa29266b7e6e6c5b7597230b").unwrap()),
+				"00125d85a05e5e63e214cb60fe63f132eec8a103aa29266b7e6e6c5b7597230b".parse().unwrap()),
 			("99e82b163b062d55a64085bacfd407bb55f194ba5fb7a1af9c34b84435455520f1372e0e650a4f91aed0058cb823f62146ccb5599c8d13372c300dea866b69fc".into(),
-				Secret::from_str("f43ac0fba42a5b6ed95707d2244659e89ba877b1c9b82c0d0a9dcf834e80fc62").unwrap()),
+				"f43ac0fba42a5b6ed95707d2244659e89ba877b1c9b82c0d0a9dcf834e80fc62".parse().unwrap()),
 			("7e05df9dd077ec21ed4bc45c9fe9e0a43d65fa4be540630de615ced5e95cf5c3003035eb713317237d7667feeeb64335525158f5f7411f67aca9645169ea554c".into(),
-				Secret::from_str("5a324938dfb2516800487d25ab7289ba8ec38811f77c3df602e4e65e3c9acd9f").unwrap()),
+				"5a324938dfb2516800487d25ab7289ba8ec38811f77c3df602e4e65e3c9acd9f".parse().unwrap()),
 			("321977760d1d8e15b047a309e4c7fe6f355c10bb5a06c68472b676926427f69f229024fa2692c10da167d14cdc77eb95d0fce68af0a0f704f0d3db36baa83bb2".into(),
-				Secret::from_str("12cf422d50002d04e52bd4906fd7f5f235f051ca36abfe37e061f8da248008d8").unwrap()),
+				"12cf422d50002d04e52bd4906fd7f5f235f051ca36abfe37e061f8da248008d8".parse().unwrap()),
 		];
 		let common_point: Public = "6962be696e1bcbba8e64cc7fddf140f854835354b5804f3bb95ae5a2799130371b589a131bd39699ac7174ccb35fc4342dab05331202209582fc8f3a40916ab0".into();
 		let encrypted_point: Public = "b07031982bde9890e12eff154765f03c56c3ab646ad47431db5dd2d742a9297679c4c65b998557f8008469afd0c43d40b6c5f6c6a1c7354875da4115237ed87a".into();
-		let encrypted_datas: Vec<_> = (0..5).map(|i| EncryptedData {
+		let encrypted_datas: Vec<_> = (0..5).map(|i| DocumentKeyShare {
 			threshold: 3,
 			id_numbers: id_numbers.clone().into_iter().collect(),
 			secret_share: secret_shares[i].clone(),
@@ -454,7 +546,7 @@ mod tests {
 		}).collect();
 		let acl_storages: Vec<_> = (0..5).map(|_| Arc::new(DummyAclStorage::default())).collect();
 		let clusters: Vec<_> = (0..5).map(|i| Arc::new(DummyCluster::new(id_numbers.iter().nth(i).clone().unwrap().0))).collect();
-		let sessions: Vec<_> = (0..5).map(|i| Session::new(SessionParams {
+		let sessions: Vec<_> = (0..5).map(|i| SessionImpl::new(SessionParams {
 			id: session_id.clone(),
 			access_key: access_key.clone(),
 			self_node_id: id_numbers.iter().nth(i).clone().unwrap().0,
@@ -466,11 +558,11 @@ mod tests {
 		(clusters, acl_storages, sessions)
 	}
 
-	fn do_messages_exchange(clusters: &[Arc<DummyCluster>], sessions: &[Session]) {
+	fn do_messages_exchange(clusters: &[Arc<DummyCluster>], sessions: &[SessionImpl]) {
 		do_messages_exchange_until(clusters, sessions, |_, _, _| false);
 	}
 
-	fn do_messages_exchange_until<F>(clusters: &[Arc<DummyCluster>], sessions: &[Session], mut cond: F) where F: FnMut(&NodeId, &NodeId, &Message) -> bool {
+	fn do_messages_exchange_until<F>(clusters: &[Arc<DummyCluster>], sessions: &[SessionImpl], mut cond: F) where F: FnMut(&NodeId, &NodeId, &Message) -> bool {
 		while let Some((from, to, message)) = clusters.iter().filter_map(|c| c.take_message().map(|(to, msg)| (c.node(), to, msg))).next() {
 			let session = &sessions[sessions.iter().position(|s| s.node() == &to).unwrap()];
 			if cond(&from, &to, &message) {
@@ -478,10 +570,10 @@ mod tests {
 			}
 
 			match message {
-				Message::InitializeDecryptionSession(message) => session.on_initialize_session(from, message).unwrap(),
+				Message::Decryption(DecryptionMessage::InitializeDecryptionSession(message)) => session.on_initialize_session(from, &message).unwrap(),
-				Message::ConfirmDecryptionInitialization(message) => session.on_confirm_initialization(from, message).unwrap(),
+				Message::Decryption(DecryptionMessage::ConfirmDecryptionInitialization(message)) => session.on_confirm_initialization(from, &message).unwrap(),
-				Message::RequestPartialDecryption(message) => session.on_partial_decryption_requested(from, message).unwrap(),
+				Message::Decryption(DecryptionMessage::RequestPartialDecryption(message)) => session.on_partial_decryption_requested(from, &message).unwrap(),
-				Message::PartialDecryption(message) => session.on_partial_decryption(from, message).unwrap(),
+				Message::Decryption(DecryptionMessage::PartialDecryption(message)) => session.on_partial_decryption(from, &message).unwrap(),
 				_ => panic!("unexpected"),
 			}
 		}
@@ -492,11 +584,11 @@ mod tests {
 		let mut nodes = BTreeMap::new();
 		let self_node_id = Random.generate().unwrap().public().clone();
 		nodes.insert(self_node_id, Random.generate().unwrap().secret().clone());
-		match Session::new(SessionParams {
+		match SessionImpl::new(SessionParams {
 			id: SessionId::default(),
 			access_key: Random.generate().unwrap().secret().clone(),
 			self_node_id: self_node_id.clone(),
-			encrypted_data: EncryptedData {
+			encrypted_data: DocumentKeyShare {
 				threshold: 0,
 				id_numbers: nodes,
 				secret_share: Random.generate().unwrap().secret().clone(),
@@ -517,11 +609,11 @@ mod tests {
 		let self_node_id = Random.generate().unwrap().public().clone();
 		nodes.insert(Random.generate().unwrap().public().clone(), Random.generate().unwrap().secret().clone());
 		nodes.insert(Random.generate().unwrap().public().clone(), Random.generate().unwrap().secret().clone());
-		match Session::new(SessionParams {
+		match SessionImpl::new(SessionParams {
 			id: SessionId::default(),
 			access_key: Random.generate().unwrap().secret().clone(),
 			self_node_id: self_node_id.clone(),
-			encrypted_data: EncryptedData {
+			encrypted_data: DocumentKeyShare {
 				threshold: 0,
 				id_numbers: nodes,
 				secret_share: Random.generate().unwrap().secret().clone(),
@@ -542,11 +634,11 @@ mod tests {
 		let self_node_id = Random.generate().unwrap().public().clone();
 		nodes.insert(self_node_id.clone(), Random.generate().unwrap().secret().clone());
 		nodes.insert(Random.generate().unwrap().public().clone(), Random.generate().unwrap().secret().clone());
-		match Session::new(SessionParams {
+		match SessionImpl::new(SessionParams {
 			id: SessionId::default(),
 			access_key: Random.generate().unwrap().secret().clone(),
 			self_node_id: self_node_id.clone(),
-			encrypted_data: EncryptedData {
+			encrypted_data: DocumentKeyShare {
 				threshold: 2,
 				id_numbers: nodes,
 				secret_share: Random.generate().unwrap().secret().clone(),
@@ -572,70 +664,70 @@ mod tests {
 	fn fails_to_accept_initialization_when_already_initialized() {
 		let (_, _, sessions) = prepare_decryption_sessions();
 		assert_eq!(sessions[0].initialize(ethkey::sign(Random.generate().unwrap().secret(), &SessionId::default()).unwrap()).unwrap(), ());
-		assert_eq!(sessions[0].on_initialize_session(sessions[1].node().clone(), message::InitializeDecryptionSession {
+		assert_eq!(sessions[0].on_initialize_session(sessions[1].node().clone(), &message::InitializeDecryptionSession {
-			session: SessionId::default(),
+			session: SessionId::default().into(),
-			sub_session: sessions[0].access_key().clone(),
+			sub_session: sessions[0].access_key().clone().into(),
-			requestor_signature: ethkey::sign(Random.generate().unwrap().secret(), &SessionId::default()).unwrap(),
+			requestor_signature: ethkey::sign(Random.generate().unwrap().secret(), &SessionId::default()).unwrap().into(),
 		}).unwrap_err(), Error::InvalidStateForRequest);
 	}
 
 	#[test]
 	fn fails_to_partial_decrypt_if_not_waiting() {
 		let (_, _, sessions) = prepare_decryption_sessions();
-		assert_eq!(sessions[1].on_initialize_session(sessions[0].node().clone(), message::InitializeDecryptionSession {
+		assert_eq!(sessions[1].on_initialize_session(sessions[0].node().clone(), &message::InitializeDecryptionSession {
-			session: SessionId::default(),
+			session: SessionId::default().into(),
-			sub_session: sessions[0].access_key().clone(),
+			sub_session: sessions[0].access_key().clone().into(),
-			requestor_signature: ethkey::sign(Random.generate().unwrap().secret(), &SessionId::default()).unwrap(),
+			requestor_signature: ethkey::sign(Random.generate().unwrap().secret(), &SessionId::default()).unwrap().into(),
 		}).unwrap(), ());
-		assert_eq!(sessions[1].on_partial_decryption_requested(sessions[0].node().clone(), message::RequestPartialDecryption {
+		assert_eq!(sessions[1].on_partial_decryption_requested(sessions[0].node().clone(), &message::RequestPartialDecryption {
-			session: SessionId::default(),
+			session: SessionId::default().into(),
-			sub_session: sessions[0].access_key().clone(),
+			sub_session: sessions[0].access_key().clone().into(),
-			nodes: sessions.iter().map(|s| s.node().clone()).take(4).collect(),
+			nodes: sessions.iter().map(|s| s.node().clone().into()).take(4).collect(),
 		}).unwrap(), ());
-		assert_eq!(sessions[1].on_partial_decryption_requested(sessions[0].node().clone(), message::RequestPartialDecryption {
+		assert_eq!(sessions[1].on_partial_decryption_requested(sessions[0].node().clone(), &message::RequestPartialDecryption {
-			session: SessionId::default(),
+			session: SessionId::default().into(),
-			sub_session: sessions[0].access_key().clone(),
+			sub_session: sessions[0].access_key().clone().into(),
-			nodes: sessions.iter().map(|s| s.node().clone()).take(4).collect(),
+			nodes: sessions.iter().map(|s| s.node().clone().into()).take(4).collect(),
 		}).unwrap_err(), Error::InvalidStateForRequest);
 	}
 
 	#[test]
 	fn fails_to_partial_decrypt_if_requested_by_slave() {
 		let (_, _, sessions) = prepare_decryption_sessions();
-		assert_eq!(sessions[1].on_initialize_session(sessions[0].node().clone(), message::InitializeDecryptionSession {
+		assert_eq!(sessions[1].on_initialize_session(sessions[0].node().clone(), &message::InitializeDecryptionSession {
-			session: SessionId::default(),
+			session: SessionId::default().into(),
-			sub_session: sessions[0].access_key().clone(),
+			sub_session: sessions[0].access_key().clone().into(),
-			requestor_signature: ethkey::sign(Random.generate().unwrap().secret(), &SessionId::default()).unwrap(),
+			requestor_signature: ethkey::sign(Random.generate().unwrap().secret(), &SessionId::default()).unwrap().into(),
 		}).unwrap(), ());
-		assert_eq!(sessions[1].on_partial_decryption_requested(sessions[2].node().clone(), message::RequestPartialDecryption {
+		assert_eq!(sessions[1].on_partial_decryption_requested(sessions[2].node().clone(), &message::RequestPartialDecryption {
-			session: SessionId::default(),
+			session: SessionId::default().into(),
-			sub_session: sessions[0].access_key().clone(),
+			sub_session: sessions[0].access_key().clone().into(),
-			nodes: sessions.iter().map(|s| s.node().clone()).take(4).collect(),
+			nodes: sessions.iter().map(|s| s.node().clone().into()).take(4).collect(),
 		}).unwrap_err(), Error::InvalidMessage);
 	}
 
 	#[test]
 	fn fails_to_partial_decrypt_if_wrong_number_of_nodes_participating() {
 		let (_, _, sessions) = prepare_decryption_sessions();
-		assert_eq!(sessions[1].on_initialize_session(sessions[0].node().clone(), message::InitializeDecryptionSession {
+		assert_eq!(sessions[1].on_initialize_session(sessions[0].node().clone(), &message::InitializeDecryptionSession {
-			session: SessionId::default(),
+			session: SessionId::default().into(),
-			sub_session: sessions[0].access_key().clone(),
+			sub_session: sessions[0].access_key().clone().into(),
-			requestor_signature: ethkey::sign(Random.generate().unwrap().secret(), &SessionId::default()).unwrap(),
+			requestor_signature: ethkey::sign(Random.generate().unwrap().secret(), &SessionId::default()).unwrap().into(),
 		}).unwrap(), ());
-		assert_eq!(sessions[1].on_partial_decryption_requested(sessions[0].node().clone(), message::RequestPartialDecryption {
+		assert_eq!(sessions[1].on_partial_decryption_requested(sessions[0].node().clone(), &message::RequestPartialDecryption {
-			session: SessionId::default(),
+			session: SessionId::default().into(),
-			sub_session: sessions[0].access_key().clone(),
+			sub_session: sessions[0].access_key().clone().into(),
-			nodes: sessions.iter().map(|s| s.node().clone()).take(2).collect(),
+			nodes: sessions.iter().map(|s| s.node().clone().into()).take(2).collect(),
 		}).unwrap_err(), Error::InvalidMessage);
 	}
 
 	#[test]
 	fn fails_to_accept_partial_decrypt_if_not_waiting() {
 		let (_, _, sessions) = prepare_decryption_sessions();
-		assert_eq!(sessions[0].on_partial_decryption(sessions[1].node().clone(), message::PartialDecryption {
+		assert_eq!(sessions[0].on_partial_decryption(sessions[1].node().clone(), &message::PartialDecryption {
-			session: SessionId::default(),
+			session: SessionId::default().into(),
-			sub_session: sessions[0].access_key().clone(),
+			sub_session: sessions[0].access_key().clone().into(),
-			shadow_point: Random.generate().unwrap().public().clone(),
+			shadow_point: Random.generate().unwrap().public().clone().into(),
 		}).unwrap_err(), Error::InvalidStateForRequest);
 	}
 
@@ -647,7 +739,7 @@ mod tests {
 		let mut pd_from = None;
 		let mut pd_msg = None;
 		do_messages_exchange_until(&clusters, &sessions, |from, _, msg| match msg {
-			&Message::PartialDecryption(ref msg) => {
+			&Message::Decryption(DecryptionMessage::PartialDecryption(ref msg)) => {
 				pd_from = Some(from.clone());
 				pd_msg = Some(msg.clone());
 				true
@@ -655,8 +747,8 @@ mod tests {
 			_ => false,
 		});
 
-		assert_eq!(sessions[0].on_partial_decryption(pd_from.clone().unwrap(), pd_msg.clone().unwrap()).unwrap(), ());
+		assert_eq!(sessions[0].on_partial_decryption(pd_from.clone().unwrap(), &pd_msg.clone().unwrap()).unwrap(), ());
-		assert_eq!(sessions[0].on_partial_decryption(pd_from.unwrap(), pd_msg.unwrap()).unwrap_err(), Error::InvalidStateForRequest);
+		assert_eq!(sessions[0].on_partial_decryption(pd_from.unwrap(), &pd_msg.unwrap()).unwrap_err(), Error::InvalidStateForRequest);
 	}
 
 	#[test]
@@ -704,4 +796,9 @@ mod tests {
 		// 3) 0 sessions have decrypted key value
 		assert!(sessions.iter().all(|s| s.decrypted_secret().is_none()));
 	}
+
+	#[test]
+	fn decryption_session_works_over_network() {
+		// TODO
+	}
 }

secret_store/src/key_server_cluster/io/deadline.rs

@@ -0,0 +1,85 @@
+// Copyright 2015-2017 Parity Technologies (UK) Ltd.
+// This file is part of Parity.
+
+// Parity is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// Parity is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
+
+use std::io;
+use std::time::Duration;
+use futures::{Future, Select, BoxFuture, Poll, Async};
+use tokio_core::reactor::{Handle, Timeout};
+
+type DeadlineBox<F> where F: Future = BoxFuture<DeadlineStatus<F::Item>, F::Error>;
+
+/// Complete a passed future or fail if it is not completed within timeout.
+pub fn deadline<F, T>(duration: Duration, handle: &Handle, future: F) -> Result<Deadline<F>, io::Error>
+	where F: Future<Item = T, Error = io::Error> + Send + 'static, T: 'static {
+	let timeout = try!(Timeout::new(duration, handle)).map(|_| DeadlineStatus::Timeout).boxed();
+	let future = future.map(DeadlineStatus::Meet).boxed();
+	let deadline = Deadline {
+		future: timeout.select(future),
+	};
+	Ok(deadline)
+}
+
+#[derive(Debug, PartialEq)]
+/// Deadline future completion status.
+pub enum DeadlineStatus<T> {
+	/// Completed a future.
+	Meet(T),
+	/// Faled with timeout.
+	Timeout,
+}
+
+/// Future, which waits for passed future completion within given period, or fails with timeout.
+pub struct Deadline<F> where F: Future {
+	future: Select<DeadlineBox<F>, DeadlineBox<F>>,
+}
+
+impl<F, T> Future for Deadline<F> where F: Future<Item = T, Error = io::Error> {
+	type Item = DeadlineStatus<T>;
+	type Error = io::Error;
+
+	fn poll(&mut self) -> Poll<Self::Item, Self::Error> {
+		match self.future.poll() {
+			Ok(Async::Ready((result, _other))) => Ok(Async::Ready(result)),
+			Ok(Async::NotReady) => Ok(Async::NotReady),
+			Err((err, _other)) => Err(err),
+		}
+	}
+}
+
+#[cfg(test)]
+mod tests {
+	use std::io;
+	use std::time::Duration;
+	use futures::{Future, empty, done};
+	use tokio_core::reactor::Core;
+	use super::{deadline, DeadlineStatus};
+
+	//#[test] TODO: not working
+	fn _deadline_timeout_works() {
+		let mut core = Core::new().unwrap();
+		let deadline = deadline(Duration::from_millis(1), &core.handle(), empty::<(), io::Error>()).unwrap();
+		core.turn(Some(Duration::from_millis(3)));
+		assert_eq!(deadline.wait().unwrap(), DeadlineStatus::Timeout);
+	}
+
+	#[test]
+	fn deadline_result_works() {
+		let mut core = Core::new().unwrap();
+		let deadline = deadline(Duration::from_millis(1000), &core.handle(), done(Ok(()))).unwrap();
+		core.turn(Some(Duration::from_millis(3)));
+		assert_eq!(deadline.wait().unwrap(), DeadlineStatus::Meet(()));
+	}
+}

secret_store/src/key_server_cluster/io/handshake.rs

@@ -0,0 +1,320 @@
+// Copyright 2015-2017 Parity Technologies (UK) Ltd.
+// This file is part of Parity.
+
+// Parity is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// Parity is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
+
+use std::io;
+use std::collections::BTreeSet;
+use futures::{Future, Poll, Async};
+use ethkey::{Random, Generator, KeyPair, Secret, sign, verify_public};
+use util::H256;
+use key_server_cluster::{NodeId, Error};
+use key_server_cluster::message::{Message, ClusterMessage, NodePublicKey, NodePrivateKeySignature};
+use key_server_cluster::io::{write_message, write_encrypted_message, WriteMessage, ReadMessage,
+	read_message, compute_shared_key};
+
+/// Start handshake procedure with another node from the cluster.
+pub fn handshake<A>(a: A, self_key_pair: KeyPair, trusted_nodes: BTreeSet<NodeId>) -> Handshake<A> where A: io::Write + io::Read {
+	let self_confirmation_plain = Random.generate().map(|kp| *kp.secret().clone()).map_err(Into::into);
+	handshake_with_plain_confirmation(a, self_confirmation_plain, self_key_pair, trusted_nodes)
+}
+
+/// Start handshake procedure with another node from the cluster and given plain confirmation.
+pub fn handshake_with_plain_confirmation<A>(a: A, self_confirmation_plain: Result<H256, Error>, self_key_pair: KeyPair, trusted_nodes: BTreeSet<NodeId>) -> Handshake<A> where A: io::Write + io::Read {
+	let (error, state) = match self_confirmation_plain.clone()
+		.and_then(|c| Handshake::<A>::make_public_key_message(self_key_pair.public().clone(), c)) {
+		Ok(message) => (None, HandshakeState::SendPublicKey(write_message(a, message))),
+		Err(err) => (Some((a, Err(err))), HandshakeState::Finished),
+	};
+
+	Handshake {
+		is_active: true,
+		error: error,
+		state: state,
+		self_key_pair: self_key_pair,
+		self_confirmation_plain: self_confirmation_plain.unwrap_or(Default::default()),
+		trusted_nodes: trusted_nodes,
+		other_node_id: None,
+		other_confirmation_plain: None,
+		shared_key: None,
+	}
+}
+
+/// Wait for handshake procedure to be started by another node from the cluster.
+pub fn accept_handshake<A>(a: A, self_key_pair: KeyPair, trusted_nodes: BTreeSet<NodeId>) -> Handshake<A> where A: io::Write + io::Read {
+	let self_confirmation_plain = Random.generate().map(|kp| *kp.secret().clone()).map_err(Into::into);
+	let (error, state) = match self_confirmation_plain.clone() {
+		Ok(_) => (None, HandshakeState::ReceivePublicKey(read_message(a))),
+		Err(err) => (Some((a, Err(err))), HandshakeState::Finished),
+	};
+
+	Handshake {
+		is_active: false,
+		error: error,
+		state: state,
+		self_key_pair: self_key_pair,
+		self_confirmation_plain: self_confirmation_plain.unwrap_or(Default::default()),
+		trusted_nodes: trusted_nodes,
+		other_node_id: None,
+		other_confirmation_plain: None,
+		shared_key: None,
+	}
+}
+
+#[derive(Debug, PartialEq)]
+/// Result of handshake procedure.
+pub struct HandshakeResult {
+	/// Node id.
+	pub node_id: NodeId,
+	/// Shared key.
+	pub shared_key: Secret,
+}
+
+/// Future handshake procedure.
+pub struct Handshake<A> {
+	is_active: bool,
+	error: Option<(A, Result<HandshakeResult, Error>)>,
+	state: HandshakeState<A>,
+	self_key_pair: KeyPair,
+	self_confirmation_plain: H256,
+	trusted_nodes: BTreeSet<NodeId>,
+	other_node_id: Option<NodeId>,
+	other_confirmation_plain: Option<H256>,
+	shared_key: Option<Secret>,
+}
+
+/// Active handshake state.
+enum HandshakeState<A> {
+	SendPublicKey(WriteMessage<A>),
+	ReceivePublicKey(ReadMessage<A>),
+	SendPrivateKeySignature(WriteMessage<A>),
+	ReceivePrivateKeySignature(ReadMessage<A>),
+	Finished,
+}
+
+impl<A> Handshake<A> where A: io::Read + io::Write {
+	#[cfg(test)]
+	pub fn set_self_confirmation_plain(&mut self, self_confirmation_plain: H256) {
+		self.self_confirmation_plain = self_confirmation_plain;
+	}
+
+	pub fn make_public_key_message(self_node_id: NodeId, confirmation_plain: H256) -> Result<Message, Error> {
+		Ok(Message::Cluster(ClusterMessage::NodePublicKey(NodePublicKey {
+			node_id: self_node_id.into(),
+			confirmation_plain: confirmation_plain.into(),
+		})))
+	}
+
+	fn make_private_key_signature_message(secret: &Secret, confirmation_plain: &H256) -> Result<Message, Error> {
+		Ok(Message::Cluster(ClusterMessage::NodePrivateKeySignature(NodePrivateKeySignature {
+			confirmation_signed: sign(secret, confirmation_plain)?.into(),
+		})))
+	}
+}
+
+impl<A> Future for Handshake<A> where A: io::Read + io::Write {
+	type Item = (A, Result<HandshakeResult, Error>);
+	type Error = io::Error;
+
+	fn poll(&mut self) -> Poll<Self::Item, Self::Error> {
+		if let Some(error_result) = self.error.take() {
+			return Ok(error_result.into());
+		}
+
+		let (next, result) = match self.state {
+			HandshakeState::SendPublicKey(ref mut future) => {
+				let (stream, _) = try_ready!(future.poll());
+
+				if self.is_active {
+					(HandshakeState::ReceivePublicKey(
+						read_message(stream)
+					), Async::NotReady)
+				} else {
+					self.shared_key = match compute_shared_key(self.self_key_pair.secret(),
+						self.other_node_id.as_ref().expect("we are in passive mode; in passive mode SendPublicKey follows ReceivePublicKey; other_node_id is filled in ReceivePublicKey; qed")
+					) {
+						Ok(shared_key) => Some(shared_key),
+						Err(err) => return Ok((stream, Err(err)).into()),
+					};
+
+					let message = match Handshake::<A>::make_private_key_signature_message(
+						self.self_key_pair.secret(),
+						self.other_confirmation_plain.as_ref().expect("we are in passive mode; in passive mode SendPublicKey follows ReceivePublicKey; other_confirmation_plain is filled in ReceivePublicKey; qed")
+					) {
+						Ok(message) => message,
+						Err(err) => return Ok((stream, Err(err)).into()),
+					};
+					(HandshakeState::SendPrivateKeySignature(write_encrypted_message(stream,
+						self.shared_key.as_ref().expect("filled couple of lines above; qed"),
+					message)), Async::NotReady)
+				}
+			},
+			HandshakeState::ReceivePublicKey(ref mut future) => {
+				let (stream, message) = try_ready!(future.poll());
+
+				let message = match message {
+					Ok(message) => match message {
+						Message::Cluster(ClusterMessage::NodePublicKey(message)) => message,
+						_ => return Ok((stream, Err(Error::InvalidMessage)).into()),
+					},
+					Err(err) => return Ok((stream, Err(err.into())).into()),
+				};
+
+				if !self.trusted_nodes.contains(&*message.node_id) {
+					return Ok((stream, Err(Error::InvalidNodeId)).into());
+				}
+
+				self.other_node_id = Some(message.node_id.into());
+				self.other_confirmation_plain = Some(message.confirmation_plain.into());
+				if self.is_active {
+					self.shared_key = match compute_shared_key(self.self_key_pair.secret(),
+						self.other_node_id.as_ref().expect("filled couple of lines above; qed")
+					) {
+						Ok(shared_key) => Some(shared_key),
+						Err(err) => return Ok((stream, Err(err)).into()),
+					};
+
+					let message = match Handshake::<A>::make_private_key_signature_message(
+						self.self_key_pair.secret(),
+						self.other_confirmation_plain.as_ref().expect("filled couple of lines above; qed")
+					) {
+						Ok(message) => message,
+						Err(err) => return Ok((stream, Err(err)).into()),
+					};
+					(HandshakeState::SendPrivateKeySignature(write_encrypted_message(stream,
+						self.shared_key.as_ref().expect("filled couple of lines above; qed"),
+					message)), Async::NotReady)
+				} else {
+					let message = match Handshake::<A>::make_public_key_message(self.self_key_pair.public().clone(), self.self_confirmation_plain.clone()) {
+						Ok(message) => message,
+						Err(err) => return Ok((stream, Err(err)).into()),
+					};
+					(HandshakeState::SendPublicKey(write_message(stream, message)), Async::NotReady)
+				}
+			},
+			HandshakeState::SendPrivateKeySignature(ref mut future) => {
+				let (stream, _) = try_ready!(future.poll());
+
+				(HandshakeState::ReceivePrivateKeySignature(
+					read_message(stream)
+				), Async::NotReady)
+			},
+			HandshakeState::ReceivePrivateKeySignature(ref mut future) => {
+				let (stream, message) = try_ready!(future.poll());
+
+				let message = match message {
+					Ok(message) => match message {
+						Message::Cluster(ClusterMessage::NodePrivateKeySignature(message)) => message,
+						_ => return Ok((stream, Err(Error::InvalidMessage)).into()),
+					},
+					Err(err) => return Ok((stream, Err(err.into())).into()),
+				};
+
+				let other_node_public = self.other_node_id.as_ref().expect("other_node_id is filled in ReceivePublicKey; ReceivePrivateKeySignature follows ReceivePublicKey; qed");
+				if !verify_public(other_node_public, &*message.confirmation_signed, &self.self_confirmation_plain).unwrap_or(false) {
+					return Ok((stream, Err(Error::InvalidMessage)).into());
+				}
+
+				(HandshakeState::Finished, Async::Ready((stream, Ok(HandshakeResult {
+					node_id: self.other_node_id.expect("other_node_id is filled in ReceivePublicKey; ReceivePrivateKeySignature follows ReceivePublicKey; qed"),
+					shared_key: self.shared_key.clone().expect("shared_key is filled in Send/ReceivePublicKey; ReceivePrivateKeySignature follows Send/ReceivePublicKey; qed"),
+				}))))
+			},
+			HandshakeState::Finished => panic!("poll Handshake after it's done"),
+		};
+
+		self.state = next;
+		match result {
+			// by polling again, we register new future
+			Async::NotReady => self.poll(),
+			result => Ok(result)
+		}
+	}
+}
+
+#[cfg(test)]
+mod tests {
+	use std::collections::BTreeSet;
+	use futures::Future;
+	use ethcrypto::ecdh::agree;
+	use ethkey::{Random, Generator, sign};
+	use util::H256;
+	use key_server_cluster::io::message::tests::TestIo;
+	use key_server_cluster::message::{Message, ClusterMessage, NodePublicKey, NodePrivateKeySignature};
+	use super::{handshake_with_plain_confirmation, accept_handshake, HandshakeResult};
+
+	fn prepare_test_io() -> (H256, TestIo) {
+		let self_key_pair = Random.generate().unwrap();
+		let peer_key_pair = Random.generate().unwrap();
+		let mut io = TestIo::new(self_key_pair.clone(), peer_key_pair.public().clone());
+
+		let self_confirmation_plain = *Random.generate().unwrap().secret().clone();
+		let peer_confirmation_plain = *Random.generate().unwrap().secret().clone();
+
+		let self_confirmation_signed = sign(peer_key_pair.secret(), &self_confirmation_plain).unwrap();
+		let peer_confirmation_signed = sign(self_key_pair.secret(), &peer_confirmation_plain).unwrap();
+
+		io.add_input_message(Message::Cluster(ClusterMessage::NodePublicKey(NodePublicKey {
+			node_id: peer_key_pair.public().clone().into(),
+			confirmation_plain: peer_confirmation_plain.into(),
+		})));
+		io.add_input_message(Message::Cluster(ClusterMessage::NodePrivateKeySignature(NodePrivateKeySignature {
+			confirmation_signed: self_confirmation_signed.into(),
+		})));
+
+		io.add_output_message(Message::Cluster(ClusterMessage::NodePublicKey(NodePublicKey {
+			node_id: self_key_pair.public().clone().into(),
+			confirmation_plain: self_confirmation_plain.clone().into(),
+		})));
+		io.add_output_message(Message::Cluster(ClusterMessage::NodePrivateKeySignature(NodePrivateKeySignature {
+			confirmation_signed: peer_confirmation_signed.into(),
+		})));
+
+		(self_confirmation_plain, io)
+	}
+
+	#[test]
+	fn active_handshake_works() {
+		let (self_confirmation_plain, io) = prepare_test_io();
+		let self_key_pair = io.self_key_pair().clone();
+		let trusted_nodes: BTreeSet<_> = vec![io.peer_public().clone()].into_iter().collect();
+		let shared_key = agree(self_key_pair.secret(), trusted_nodes.iter().nth(0).unwrap()).unwrap();
+
+		let handshake = handshake_with_plain_confirmation(io, Ok(self_confirmation_plain), self_key_pair, trusted_nodes);
+		let handshake_result = handshake.wait().unwrap();
+		assert_eq!(handshake_result.1, Ok(HandshakeResult {
+			node_id: handshake_result.0.peer_public().clone(),
+			shared_key: shared_key,
+		}));
+		handshake_result.0.assert_output();
+	}
+
+	#[test]
+	fn passive_handshake_works() {
+		let (self_confirmation_plain, io) = prepare_test_io();
+		let self_key_pair = io.self_key_pair().clone();
+		let trusted_nodes: BTreeSet<_> = vec![io.peer_public().clone()].into_iter().collect();
+		let shared_key = agree(self_key_pair.secret(), io.peer_public()).unwrap();
+
+		let mut handshake = accept_handshake(io, self_key_pair, trusted_nodes);
+		handshake.set_self_confirmation_plain(self_confirmation_plain);
+
+		let handshake_result = handshake.wait().unwrap();
+		assert_eq!(handshake_result.1, Ok(HandshakeResult {
+			node_id: handshake_result.0.peer_public().clone(),
+			shared_key: shared_key,
+		}));
+		handshake_result.0.assert_output();
+	}
+}

secret_store/src/key_server_cluster/io/message.rs

@@ -0,0 +1,247 @@
+// Copyright 2015-2017 Parity Technologies (UK) Ltd.
+// This file is part of Parity.
+
+// Parity is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// Parity is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
+
+use std::io::Cursor;
+use std::u16;
+use std::ops::Deref;
+use byteorder::{LittleEndian, ReadBytesExt, WriteBytesExt};
+use serde_json;
+use ethcrypto::ecdh::agree;
+use ethkey::{Public, Secret};
+use key_server_cluster::Error;
+use key_server_cluster::message::{Message, ClusterMessage, EncryptionMessage, DecryptionMessage};
+
+/// Size of serialized header.
+pub const MESSAGE_HEADER_SIZE: usize = 4;
+
+#[derive(Debug, PartialEq)]
+/// Message header.
+pub struct MessageHeader {
+	/// Message/Header version.
+	pub version: u8,
+	/// Message kind.
+	pub kind: u8,
+	/// Message payload size (without header).
+	pub size: u16,
+}
+
+#[derive(Debug, Clone, PartialEq)]
+/// Serialized message.
+pub struct SerializedMessage(Vec<u8>);
+
+impl Deref for SerializedMessage {
+	type Target = [u8];
+
+	fn deref(&self) -> &[u8] {
+		&self.0
+	}
+}
+
+impl Into<Vec<u8>> for SerializedMessage {
+	fn into(self) -> Vec<u8> {
+		self.0
+	}
+}
+
+/// Serialize message.
+pub fn serialize_message(message: Message) -> Result<SerializedMessage, Error> {
+	let (message_kind, payload) = match message {
+		Message::Cluster(ClusterMessage::NodePublicKey(payload))							=> (1, serde_json::to_vec(&payload)),
+		Message::Cluster(ClusterMessage::NodePrivateKeySignature(payload))					=> (2, serde_json::to_vec(&payload)),
+		Message::Cluster(ClusterMessage::KeepAlive(payload))								=> (3, serde_json::to_vec(&payload)),
+		Message::Cluster(ClusterMessage::KeepAliveResponse(payload))						=> (4, serde_json::to_vec(&payload)),
+
+		Message::Encryption(EncryptionMessage::InitializeSession(payload))					=> (50, serde_json::to_vec(&payload)),
+		Message::Encryption(EncryptionMessage::ConfirmInitialization(payload))				=> (51, serde_json::to_vec(&payload)),
+		Message::Encryption(EncryptionMessage::CompleteInitialization(payload))				=> (52, serde_json::to_vec(&payload)),
+		Message::Encryption(EncryptionMessage::KeysDissemination(payload))					=> (53, serde_json::to_vec(&payload)),
+		Message::Encryption(EncryptionMessage::Complaint(payload))							=> (54, serde_json::to_vec(&payload)),
+		Message::Encryption(EncryptionMessage::ComplaintResponse(payload))					=> (55, serde_json::to_vec(&payload)),
+		Message::Encryption(EncryptionMessage::PublicKeyShare(payload))						=> (56, serde_json::to_vec(&payload)),
+		Message::Encryption(EncryptionMessage::SessionError(payload))						=> (57, serde_json::to_vec(&payload)),
+		Message::Encryption(EncryptionMessage::SessionCompleted(payload))					=> (58, serde_json::to_vec(&payload)),
+
+		Message::Decryption(DecryptionMessage::InitializeDecryptionSession(payload))		=> (100, serde_json::to_vec(&payload)),
+		Message::Decryption(DecryptionMessage::ConfirmDecryptionInitialization(payload))	=> (101, serde_json::to_vec(&payload)),
+		Message::Decryption(DecryptionMessage::RequestPartialDecryption(payload))			=> (102, serde_json::to_vec(&payload)),
+		Message::Decryption(DecryptionMessage::PartialDecryption(payload))					=> (103, serde_json::to_vec(&payload)),
+		Message::Decryption(DecryptionMessage::DecryptionSessionError(payload))				=> (104, serde_json::to_vec(&payload)),
+	};
+
+	let payload = payload.map_err(|err| Error::Serde(err.to_string()))?;
+	let payload_len = payload.len();
+	if payload_len > u16::MAX as usize {
+		return Err(Error::InvalidMessage);
+	}
+
+	let header = MessageHeader {
+		kind: message_kind,
+		version: 1,
+		size: payload_len as u16,
+	};
+
+	let mut serialized_message = serialize_header(&header)?;
+	serialized_message.extend(payload);
+	Ok(SerializedMessage(serialized_message))
+}
+
+/// Deserialize message.
+pub fn deserialize_message(header: &MessageHeader, payload: Vec<u8>) -> Result<Message, Error> {
+	Ok(match header.kind {
+		1	=> Message::Cluster(ClusterMessage::NodePublicKey(serde_json::from_slice(&payload).map_err(|err| Error::Serde(err.to_string()))?)),
+		2	=> Message::Cluster(ClusterMessage::NodePrivateKeySignature(serde_json::from_slice(&payload).map_err(|err| Error::Serde(err.to_string()))?)),
+		3	=> Message::Cluster(ClusterMessage::KeepAlive(serde_json::from_slice(&payload).map_err(|err| Error::Serde(err.to_string()))?)),
+		4	=> Message::Cluster(ClusterMessage::KeepAliveResponse(serde_json::from_slice(&payload).map_err(|err| Error::Serde(err.to_string()))?)),
+
+		50	=> Message::Encryption(EncryptionMessage::InitializeSession(serde_json::from_slice(&payload).map_err(|err| Error::Serde(err.to_string()))?)),
+		51	=> Message::Encryption(EncryptionMessage::ConfirmInitialization(serde_json::from_slice(&payload).map_err(|err| Error::Serde(err.to_string()))?)),
+		52	=> Message::Encryption(EncryptionMessage::CompleteInitialization(serde_json::from_slice(&payload).map_err(|err| Error::Serde(err.to_string()))?)),
+		53	=> Message::Encryption(EncryptionMessage::KeysDissemination(serde_json::from_slice(&payload).map_err(|err| Error::Serde(err.to_string()))?)),
+		54	=> Message::Encryption(EncryptionMessage::Complaint(serde_json::from_slice(&payload).map_err(|err| Error::Serde(err.to_string()))?)),
+		55	=> Message::Encryption(EncryptionMessage::ComplaintResponse(serde_json::from_slice(&payload).map_err(|err| Error::Serde(err.to_string()))?)),
+		56	=> Message::Encryption(EncryptionMessage::PublicKeyShare(serde_json::from_slice(&payload).map_err(|err| Error::Serde(err.to_string()))?)),
+		57	=> Message::Encryption(EncryptionMessage::SessionError(serde_json::from_slice(&payload).map_err(|err| Error::Serde(err.to_string()))?)),
+		58	=> Message::Encryption(EncryptionMessage::SessionCompleted(serde_json::from_slice(&payload).map_err(|err| Error::Serde(err.to_string()))?)),
+
+		100	=> Message::Decryption(DecryptionMessage::InitializeDecryptionSession(serde_json::from_slice(&payload).map_err(|err| Error::Serde(err.to_string()))?)),
+		101	=> Message::Decryption(DecryptionMessage::ConfirmDecryptionInitialization(serde_json::from_slice(&payload).map_err(|err| Error::Serde(err.to_string()))?)),
+		102	=> Message::Decryption(DecryptionMessage::RequestPartialDecryption(serde_json::from_slice(&payload).map_err(|err| Error::Serde(err.to_string()))?)),
+		103	=> Message::Decryption(DecryptionMessage::PartialDecryption(serde_json::from_slice(&payload).map_err(|err| Error::Serde(err.to_string()))?)),
+		104	=> Message::Decryption(DecryptionMessage::DecryptionSessionError(serde_json::from_slice(&payload).map_err(|err| Error::Serde(err.to_string()))?)),
+
+		_ => return Err(Error::Serde(format!("unknown message type {}", header.kind))),
+	})
+}
+
+/// Encrypt serialized message.
+pub fn encrypt_message(_key: &Secret, message: SerializedMessage) -> Result<SerializedMessage, Error> {
+	Ok(message) // TODO: implement me
+}
+
+/// Decrypt serialized message.
+pub fn decrypt_message(_key: &Secret, payload: Vec<u8>) -> Result<Vec<u8>, Error> {
+	Ok(payload) // TODO: implement me
+}
+
+/// Compute shared encryption key.
+pub fn compute_shared_key(self_secret: &Secret, other_public: &Public) -> Result<Secret, Error> {
+	Ok(agree(self_secret, other_public)?)
+}
+
+/// Serialize message header.
+fn serialize_header(header: &MessageHeader) -> Result<Vec<u8>, Error> {
+	let mut buffer = Vec::with_capacity(MESSAGE_HEADER_SIZE);
+	buffer.write_u8(header.version)?;
+	buffer.write_u8(header.kind)?;
+	buffer.write_u16::<LittleEndian>(header.size)?;
+	Ok(buffer)
+}
+
+/// Deserialize message header.
+pub fn deserialize_header(data: &[u8]) -> Result<MessageHeader, Error> {
+	let mut reader = Cursor::new(data);
+	Ok(MessageHeader {
+		version: reader.read_u8()?,
+		kind: reader.read_u8()?,
+		size: reader.read_u16::<LittleEndian>()?,
+	})
+}
+
+#[cfg(test)]
+pub mod tests {
+	use std::io;
+	use ethkey::{KeyPair, Public};
+	use key_server_cluster::message::Message;
+	use super::{MESSAGE_HEADER_SIZE, MessageHeader, serialize_message, serialize_header, deserialize_header};
+
+	pub struct TestIo {
+		self_key_pair: KeyPair,
+		peer_public: Public,
+		input_buffer: io::Cursor<Vec<u8>>,
+		output_buffer: Vec<u8>,
+		expected_output_buffer: Vec<u8>,
+	}
+
+	impl TestIo {
+		pub fn new(self_key_pair: KeyPair, peer_public: Public) -> Self {
+			TestIo {
+				self_key_pair: self_key_pair,
+				peer_public: peer_public,
+				input_buffer: io::Cursor::new(Vec::new()),
+				output_buffer: Vec::new(),
+				expected_output_buffer: Vec::new(),
+			}
+		}
+
+		pub fn self_key_pair(&self) -> &KeyPair {
+			&self.self_key_pair
+		}
+
+		pub fn peer_public(&self) -> &Public {
+			&self.peer_public
+		}
+
+		pub fn add_input_message(&mut self, message: Message) {
+			let serialized_message = serialize_message(message).unwrap();
+			let serialized_message: Vec<_> = serialized_message.into();
+			let input_buffer = self.input_buffer.get_mut();
+			for b in serialized_message {
+				input_buffer.push(b);
+			}
+		}
+
+		pub fn add_output_message(&mut self, message: Message) {
+			let serialized_message = serialize_message(message).unwrap();
+			let serialized_message: Vec<_> = serialized_message.into();
+			self.expected_output_buffer.extend(serialized_message);
+		}
+
+		pub fn assert_output(&self) {
+			assert_eq!(self.output_buffer, self.expected_output_buffer);
+		}
+	}
+
+	impl io::Read for TestIo {
+		fn read(&mut self, buf: &mut [u8]) -> io::Result<usize> {
+			io::Read::read(&mut self.input_buffer, buf)
+		}
+	}
+
+	impl io::Write for TestIo {
+		fn write(&mut self, buf: &[u8]) -> io::Result<usize> {
+			io::Write::write(&mut self.output_buffer, buf)
+		}
+
+		fn flush(&mut self) -> io::Result<()> {
+			io::Write::flush(&mut self.output_buffer)
+		}
+	}
+
+	#[test]
+	fn header_serialization_works() {
+		let header = MessageHeader {
+			kind: 1,
+			version: 2,
+			size: 3,
+		};
+
+		let serialized_header = serialize_header(&header).unwrap();
+		assert_eq!(serialized_header.len(), MESSAGE_HEADER_SIZE);
+
+		let deserialized_header = deserialize_header(&serialized_header).unwrap();
+		assert_eq!(deserialized_header, header);
+	}
+}

secret_store/src/key_server_cluster/io/mod.rs

@@ -0,0 +1,34 @@
+// Copyright 2015-2017 Parity Technologies (UK) Ltd.
+// This file is part of Parity.
+
+// Parity is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// Parity is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
+
+mod deadline;
+mod handshake;
+mod message;
+mod read_header;
+mod read_payload;
+mod read_message;
+mod shared_tcp_stream;
+mod write_message;
+
+pub use self::deadline::{deadline, Deadline, DeadlineStatus};
+pub use self::handshake::{handshake, accept_handshake, Handshake, HandshakeResult};
+pub use self::message::{MessageHeader, SerializedMessage, serialize_message, deserialize_message,
+	encrypt_message, compute_shared_key};
+pub use self::read_header::{read_header, ReadHeader};
+pub use self::read_payload::{read_payload, read_encrypted_payload, ReadPayload};
+pub use self::read_message::{read_message, read_encrypted_message, ReadMessage};
+pub use self::shared_tcp_stream::SharedTcpStream;
+pub use self::write_message::{write_message, write_encrypted_message, WriteMessage};

secret_store/src/key_server_cluster/io/read_header.rs

@@ -0,0 +1,44 @@
+// Copyright 2015-2017 Parity Technologies (UK) Ltd.
+// This file is part of Parity.
+
+// Parity is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// Parity is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
+
+use std::io;
+use futures::{Future, Poll, Async};
+use tokio_core::io::{ReadExact, read_exact};
+use key_server_cluster::Error;
+use key_server_cluster::io::message::{MESSAGE_HEADER_SIZE, MessageHeader, deserialize_header};
+
+/// Create future for read single message header from the stream.
+pub fn read_header<A>(a: A) -> ReadHeader<A> where A: io::Read {
+	ReadHeader {
+		reader: read_exact(a, [0; MESSAGE_HEADER_SIZE]),
+	}
+}
+
+/// Future for read single message header from the stream.
+pub struct ReadHeader<A> {
+	reader: ReadExact<A, [u8; MESSAGE_HEADER_SIZE]>,
+}
+
+impl<A> Future for ReadHeader<A> where A: io::Read {
+	type Item = (A, Result<MessageHeader, Error>);
+	type Error = io::Error;
+
+	fn poll(&mut self) -> Poll<Self::Item, Self::Error> {
+		let (read, data) = try_ready!(self.reader.poll());
+		let header = deserialize_header(&data);
+		Ok(Async::Ready((read, header)))
+	}
+}

secret_store/src/key_server_cluster/io/read_message.rs

@@ -0,0 +1,86 @@
+// Copyright 2015-2017 Parity Technologies (UK) Ltd.
+// This file is part of Parity.
+
+// Parity is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// Parity is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
+
+use std::io;
+use futures::{Poll, Future, Async};
+use ethkey::Secret;
+use key_server_cluster::Error;
+use key_server_cluster::message::Message;
+use key_server_cluster::io::{read_header, ReadHeader, read_payload, read_encrypted_payload, ReadPayload};
+
+/// Create future for read single message from the stream.
+pub fn read_message<A>(a: A) -> ReadMessage<A> where A: io::Read {
+	ReadMessage {
+		key: None,
+		state: ReadMessageState::ReadHeader(read_header(a)),
+	}
+}
+
+/// Create future for read single encrypted message from the stream.
+pub fn read_encrypted_message<A>(a: A, key: Secret) -> ReadMessage<A> where A: io::Read {
+	ReadMessage {
+		key: Some(key),
+		state: ReadMessageState::ReadHeader(read_header(a)),
+	}
+}
+
+enum ReadMessageState<A> {
+	ReadHeader(ReadHeader<A>),
+	ReadPayload(ReadPayload<A>),
+	Finished,
+}
+
+/// Future for read single message from the stream.
+pub struct ReadMessage<A> {
+	key: Option<Secret>,
+	state: ReadMessageState<A>,
+}
+
+impl<A> Future for ReadMessage<A> where A: io::Read {
+	type Item = (A, Result<Message, Error>);
+	type Error = io::Error;
+
+	fn poll(&mut self) -> Poll<Self::Item, Self::Error> {
+		let (next, result) = match self.state {
+			ReadMessageState::ReadHeader(ref mut future) => {
+				let (read, header) = try_ready!(future.poll());
+				let header = match header {
+					Ok(header) => header,
+					Err(err) => return Ok((read, Err(err)).into()),
+				};
+
+				let future = match self.key.take() {
+					Some(key) => read_encrypted_payload(read, header, key),
+					None => read_payload(read, header),
+				};
+				let next = ReadMessageState::ReadPayload(future);
+				(next, Async::NotReady)
+			},
+			ReadMessageState::ReadPayload(ref mut future) => {
+				let (read, payload) = try_ready!(future.poll());
+				(ReadMessageState::Finished, Async::Ready((read, payload)))
+			},
+			ReadMessageState::Finished => panic!("poll ReadMessage after it's done"),
+		};
+
+		self.state = next;
+		match result {
+			// by polling again, we register new future
+			Async::NotReady => self.poll(),
+			result => Ok(result)
+		}
+	}
+}

secret_store/src/key_server_cluster/io/read_payload.rs

@@ -0,0 +1,64 @@
+// Copyright 2015-2017 Parity Technologies (UK) Ltd.
+// This file is part of Parity.
+
+// Parity is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// Parity is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
+
+use std::io;
+use futures::{Poll, Future};
+use tokio_core::io::{read_exact, ReadExact};
+use ethkey::Secret;
+use key_server_cluster::Error;
+use key_server_cluster::message::Message;
+use key_server_cluster::io::message::{MessageHeader, deserialize_message, decrypt_message};
+
+/// Create future for read single message payload from the stream.
+pub fn read_payload<A>(a: A, header: MessageHeader) -> ReadPayload<A> where A: io::Read {
+	ReadPayload {
+		reader: read_exact(a, vec![0; header.size as usize]),
+		header: header,
+		key: None,
+	}
+}
+
+/// Create future for read single encrypted message payload from the stream.
+pub fn read_encrypted_payload<A>(a: A, header: MessageHeader, key: Secret) -> ReadPayload<A> where A: io::Read {
+	ReadPayload {
+		reader: read_exact(a, vec![0; header.size as usize]),
+		header: header,
+		key: Some(key),
+	}
+}
+
+/// Future for read single message payload from the stream.
+pub struct ReadPayload<A> {
+	reader: ReadExact<A, Vec<u8>>,
+	header: MessageHeader,
+	key: Option<Secret>,
+}
+
+impl<A> Future for ReadPayload<A> where A: io::Read {
+	type Item = (A, Result<Message, Error>);
+	type Error = io::Error;
+
+	fn poll(&mut self) -> Poll<Self::Item, Self::Error> {
+		let (read, data) = try_ready!(self.reader.poll());
+		let payload = if let Some(key) = self.key.take() {
+			decrypt_message(&key, data)
+				.and_then(|data| deserialize_message(&self.header, data))
+		} else {
+			deserialize_message(&self.header, data)
+		};
+		Ok((read, payload).into())
+	}
+}

secret_store/src/key_server_cluster/io/shared_tcp_stream.rs

@@ -0,0 +1,60 @@
+// Copyright 2015-2017 Parity Technologies (UK) Ltd.
+// This file is part of Parity.
+
+// Parity is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// Parity is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
+
+use std::sync::Arc;
+use std::io::{Read, Write, Error};
+use tokio_core::net::TcpStream;
+
+/// Read+Write implementation for Arc<TcpStream>.
+pub struct SharedTcpStream {
+	io: Arc<TcpStream>,
+}
+
+impl SharedTcpStream {
+	pub fn new(a: Arc<TcpStream>) -> Self {
+		SharedTcpStream {
+			io: a,
+		}
+	}
+}
+
+impl From<TcpStream> for SharedTcpStream {
+	fn from(a: TcpStream) -> Self {
+		SharedTcpStream::new(Arc::new(a))
+	}
+}
+
+impl Read for SharedTcpStream {
+	fn read(&mut self, buf: &mut [u8]) -> Result<usize, Error> {
+		Read::read(&mut (&*self.io as &TcpStream), buf)
+	}
+}
+
+impl Write for SharedTcpStream {
+	fn write(&mut self, buf: &[u8]) -> Result<usize, Error> {
+		Write::write(&mut (&*self.io as &TcpStream), buf)
+	}
+
+	fn flush(&mut self) -> Result<(), Error> {
+		Write::flush(&mut (&*self.io as &TcpStream))
+	}
+}
+
+impl Clone for SharedTcpStream {
+	fn clone(&self) -> Self {
+		SharedTcpStream::new(self.io.clone())
+	}
+}

secret_store/src/key_server_cluster/io/write_message.rs

@@ -0,0 +1,70 @@
+// Copyright 2015-2017 Parity Technologies (UK) Ltd.
+// This file is part of Parity.
+
+// Parity is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// Parity is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
+
+use std::io;
+use futures::{Future, Poll};
+use tokio_core::io::{WriteAll, write_all};
+use ethkey::Secret;
+use key_server_cluster::message::Message;
+use key_server_cluster::io::{serialize_message, encrypt_message};
+
+/// Write plain message to the channel.
+pub fn write_message<A>(a: A, message: Message) -> WriteMessage<A> where A: io::Write {
+	let (error, future) = match serialize_message(message)
+		.map_err(|e| io::Error::new(io::ErrorKind::Other, e.to_string())) {
+		Ok(message) => (None, write_all(a, message.into())),
+		Err(error) => (Some(error), write_all(a, Vec::new())),
+	};
+	WriteMessage {
+		error: error,
+		future: future,
+	}
+}
+
+/// Write encrypted message to the channel.
+pub fn write_encrypted_message<A>(a: A, key: &Secret, message: Message) -> WriteMessage<A> where A: io::Write {
+	let (error, future) = match serialize_message(message)
+		.and_then(|message| encrypt_message(key, message))
+		.map_err(|e| io::Error::new(io::ErrorKind::Other, e.to_string())) {
+		Ok(message) => (None, write_all(a, message.into())),
+		Err(error) => (Some(error), write_all(a, Vec::new())),
+	};
+
+
+	WriteMessage {
+		error: error,
+		future: future,
+	}
+}
+
+/// Future message write.
+pub struct WriteMessage<A> {
+	error: Option<io::Error>,
+	future: WriteAll<A, Vec<u8>>,
+}
+
+impl<A> Future for WriteMessage<A> where A: io::Write {
+	type Item = (A, Vec<u8>);
+	type Error = io::Error;
+
+	fn poll(&mut self) -> Poll<Self::Item, Self::Error> {
+		if let Some(err) = self.error.take() {
+			return Err(err);
+		}
+
+		self.future.poll()
+	}
+}

secret_store/src/key_server_cluster/math.rs

@@ -160,7 +160,7 @@ pub fn compute_joint_secret<'a, I>(mut secret_coeffs: I) -> Result<Secret, Error
 }
 
 /// Encrypt secret with joint public key.
-pub fn encrypt_secret(secret: Public, joint_public: &Public) -> Result<EncryptedSecret, Error> {
+pub fn encrypt_secret(secret: &Public, joint_public: &Public) -> Result<EncryptedSecret, Error> {
 	// this is performed by KS-cluster client (or KS master)
 	let key_pair = Random.generate()?;
 
@@ -171,7 +171,7 @@ pub fn encrypt_secret(secret: Public, joint_public: &Public) -> Result<Encrypted
 	// M + k * y
 	let mut encrypted_point = joint_public.clone();
 	math::public_mul_secret(&mut encrypted_point, key_pair.secret())?;
-	math::public_add(&mut encrypted_point, &secret)?;
+	math::public_add(&mut encrypted_point, secret)?;
 
 	Ok(EncryptedSecret {
 		common_point: common_point,
@@ -181,7 +181,11 @@ pub fn encrypt_secret(secret: Public, joint_public: &Public) -> Result<Encrypted
 
 /// Compute shadow for the node.
 pub fn compute_node_shadow<'a, I>(node_number: &Secret, node_secret_share: &Secret, mut other_nodes_numbers: I) -> Result<Secret, Error> where I: Iterator<Item=&'a Secret> {
-	let other_node_number = other_nodes_numbers.next().expect("compute_node_shadow is called when at least two nodes are required to decrypt secret; qed");
+	let other_node_number = match other_nodes_numbers.next() {
+		Some(other_node_number) => other_node_number,
+		None => return Ok(node_secret_share.clone()),
+	};
+
 	let mut shadow = node_number.clone();
 	shadow.sub(other_node_number)?;
 	shadow.inv()?;
@@ -231,17 +235,24 @@ pub fn compute_joint_shadow_point_test<'a, I>(access_key: &Secret, common_point:
 }
 
 /// Decrypt data using joint shadow point.
-pub fn decrypt_with_joint_shadow(access_key: &Secret, encrypted_point: &Public, joint_shadow_point: &Public) -> Result<Public, Error> {
+pub fn decrypt_with_joint_shadow(threshold: usize, access_key: &Secret, encrypted_point: &Public, joint_shadow_point: &Public) -> Result<Public, Error> {
 	let mut inv_access_key = access_key.clone();
 	inv_access_key.inv()?;
 
-	let mut decrypted_point = joint_shadow_point.clone();
+	let mut mul = joint_shadow_point.clone();
-	math::public_mul_secret(&mut decrypted_point, &inv_access_key)?;
+	math::public_mul_secret(&mut mul, &inv_access_key)?;
-	math::public_add(&mut decrypted_point, encrypted_point)?;
+
+	let mut decrypted_point = encrypted_point.clone();
+	if threshold % 2 != 0 {
+		math::public_add(&mut decrypted_point, &mul)?;
+	} else {
+		math::public_sub(&mut decrypted_point, &mul)?;
+	}
 
 	Ok(decrypted_point)
 }
 
+#[cfg(test)]
 /// Decrypt data using joint secret (version for tests).
 pub fn decrypt_with_joint_secret(encrypted_point: &Public, common_point: &Public, joint_secret: &Secret) -> Result<Public, Error> {
 	let mut common_point_mul = common_point.clone();
@@ -262,7 +273,7 @@ pub mod tests {
 		// === PART2: encryption using joint public key ===
 
 		// the next line is executed on KeyServer-client
-		let encrypted_secret = encrypt_secret(document_secret_plain.clone(), &joint_public).unwrap();
+		let encrypted_secret = encrypt_secret(&document_secret_plain, &joint_public).unwrap();
 
 		// === PART3: decryption ===
 
@@ -285,7 +296,7 @@ pub mod tests {
 		assert_eq!(joint_shadow_point, joint_shadow_point_test);
 
 		// decrypt encrypted secret using joint shadow point
-		let document_secret_decrypted = decrypt_with_joint_shadow(&access_key, &encrypted_secret.encrypted_point, &joint_shadow_point).unwrap();
+		let document_secret_decrypted = decrypt_with_joint_shadow(t, &access_key, &encrypted_secret.encrypted_point, &joint_shadow_point).unwrap();
 
 		// decrypt encrypted secret using joint secret [just for test]
 		let document_secret_decrypted_test = match joint_secret {
@@ -298,7 +309,8 @@ pub mod tests {
 
 	#[test]
 	fn full_encryption_math_session() {
-		let test_cases = [(1, 3)];
+		let test_cases = [(0, 2), (1, 2), (1, 3), (2, 3), (1, 4), (2, 4), (3, 4), (1, 5), (2, 5), (3, 5), (4, 5),
+			(1, 10), (2, 10), (3, 10), (4, 10), (5, 10), (6, 10), (7, 10), (8, 10), (9, 10)];
 		for &(t, n) in &test_cases {
 			// === PART1: DKG ===
 			

secret_store/src/key_server_cluster/message.rs

@@ -14,13 +14,42 @@
 // You should have received a copy of the GNU General Public License
 // along with Parity.  If not, see <http://www.gnu.org/licenses/>.
 
+use std::fmt;
 use std::collections::{BTreeSet, BTreeMap};
-use ethkey::{Public, Secret, Signature};
+use ethkey::Secret;
-use key_server_cluster::{NodeId, SessionId};
+use key_server_cluster::SessionId;
+use super::{SerializableH256, SerializablePublic, SerializableSecret, SerializableSignature};
+
+pub type MessageSessionId = SerializableH256;
+pub type MessageNodeId = SerializablePublic;
 
 #[derive(Clone, Debug)]
-/// All possible messages that can be sent during DKG.
+/// All possible messages that can be sent during encryption/decryption sessions.
 pub enum Message {
+	/// Cluster message.
+	Cluster(ClusterMessage),
+	/// Encryption message.
+	Encryption(EncryptionMessage),
+	/// Decryption message.
+	Decryption(DecryptionMessage),
+}
+
+#[derive(Clone, Debug)]
+/// All possible cluster-level messages.
+pub enum ClusterMessage {
+	/// Introduce node public key.
+	NodePublicKey(NodePublicKey),
+	/// Confirm that node owns its private key.
+	NodePrivateKeySignature(NodePrivateKeySignature),
+	/// Keep alive message.
+	KeepAlive(KeepAlive),
+	/// Keep alive message response.
+	KeepAliveResponse(KeepAliveResponse),
+}
+
+#[derive(Clone, Debug)]
+/// All possible messages that can be sent during encryption session.
+pub enum EncryptionMessage {
 	/// Initialize new DKG session.
 	InitializeSession(InitializeSession),
 	/// Confirm DKG session initialization.
@@ -35,7 +64,15 @@ pub enum Message {
 	ComplaintResponse(ComplaintResponse),
 	/// Broadcast self public key portion.
 	PublicKeyShare(PublicKeyShare),
+	/// When session error has occured.
+	SessionError(SessionError),
+	/// When session is completed.
+	SessionCompleted(SessionCompleted),
+}
 
+#[derive(Clone, Debug)]
+/// All possible messages that can be sent during decryption session.
+pub enum DecryptionMessage {
 	/// Initialize decryption session.
 	InitializeDecryptionSession(InitializeDecryptionSession),
 	/// Confirm/reject decryption session initialization.
@@ -44,125 +81,272 @@ pub enum Message {
 	RequestPartialDecryption(RequestPartialDecryption),
 	/// Partial decryption is completed
 	PartialDecryption(PartialDecryption),
+	/// When decryption session error has occured.
+	DecryptionSessionError(DecryptionSessionError),
 }
 
-#[derive(Clone, Debug)]
+#[derive(Clone, Debug, Serialize, Deserialize)]
+/// Introduce node public key.
+pub struct NodePublicKey {
+	/// Node identifier (aka node public key).
+	pub node_id: MessageNodeId,
+	/// Data, which must be signed by peer to prove that he owns the corresponding private key. 
+	pub confirmation_plain: SerializableH256,
+}
+
+#[derive(Clone, Debug, Serialize, Deserialize)]
+/// Confirm that node owns the private key of previously passed public key (aka node id).
+pub struct NodePrivateKeySignature {
+	/// Previously passed `confirmation_plain`, signed with node private key.
+	pub confirmation_signed: SerializableSignature,
+}
+
+
+#[derive(Clone, Debug, Serialize, Deserialize)]
+/// Ask if the node is still alive.
+pub struct KeepAlive {
+}
+
+#[derive(Clone, Debug, Serialize, Deserialize)]
+/// Confirm that the node is still alive.
+pub struct KeepAliveResponse {
+}
+
+#[derive(Clone, Debug, Serialize, Deserialize)]
 /// Initialize new DKG session.
 pub struct InitializeSession {
 	/// Session Id.
-	pub session: SessionId,
+	pub session: MessageSessionId,
 	/// Derived generation point. Starting from originator, every node must multiply this
 	/// point by random scalar (unknown by other nodes). At the end of initialization
 	/// `point` will be some (k1 * k2 * ... * kn) * G = `point` where `(k1 * k2 * ... * kn)`
 	/// is unknown for every node.
-	pub derived_point: Public,
+	pub derived_point: SerializablePublic,
 }
 
-#[derive(Clone, Debug)]
+#[derive(Clone, Debug, Serialize, Deserialize)]
 /// Confirm DKG session initialization.
 pub struct ConfirmInitialization {
 	/// Session Id.
-	pub session: SessionId,
+	pub session: MessageSessionId,
 	/// Derived generation point.
-	pub derived_point: Public,
+	pub derived_point: SerializablePublic,
 }
 
-#[derive(Clone, Debug)]
+#[derive(Clone, Debug, Serialize, Deserialize)]
 /// Broadcast generated point to every other node.
 pub struct CompleteInitialization {
 	/// Session Id.
-	pub session: SessionId,
+	pub session: MessageSessionId,
 	/// All session participants along with their identification numbers.
-	pub nodes: BTreeMap<NodeId, Secret>,
+	pub nodes: BTreeMap<MessageNodeId, SerializableSecret>,
 	/// Decryption threshold. During decryption threshold-of-route.len() nodes must came to
 	/// consensus to successfully decrypt message.
 	pub threshold: usize,
 	/// Derived generation point.
-	pub derived_point: Public,
+	pub derived_point: SerializablePublic,
 }
 
-#[derive(Clone, Debug)]
+#[derive(Clone, Debug, Serialize, Deserialize)]
 /// Generated keys are sent to every node.
 pub struct KeysDissemination {
 	/// Session Id.
-	pub session: SessionId,
+	pub session: MessageSessionId,
 	/// Secret 1.
-	pub secret1: Secret,
+	pub secret1: SerializableSecret,
 	/// Secret 2.
-	pub secret2: Secret,
+	pub secret2: SerializableSecret,
 	/// Public values.
-	pub publics: Vec<Public>,
+	pub publics: Vec<SerializablePublic>,
 }
 
-#[derive(Clone, Debug)]
+#[derive(Clone, Debug, Serialize, Deserialize)]
 /// Complaint against node is broadcasted.
 pub struct Complaint {
 	/// Session Id.
-	pub session: SessionId,
+	pub session: MessageSessionId,
 	/// Public values.
-	pub against: NodeId,
+	pub against: MessageNodeId,
 }
 
-#[derive(Clone, Debug)]
+#[derive(Clone, Debug, Serialize, Deserialize)]
 /// Node is responding to complaint.
 pub struct ComplaintResponse {
 	/// Session Id.
-	pub session: SessionId,
+	pub session: MessageSessionId,
 	/// Secret 1.
-	pub secret1: Secret,
+	pub secret1: SerializableSecret,
 	/// Secret 2.
-	pub secret2: Secret,
+	pub secret2: SerializableSecret,
 }
 
-#[derive(Clone, Debug)]
+#[derive(Clone, Debug, Serialize, Deserialize)]
 /// Node is sharing its public key share.
 pub struct PublicKeyShare {
 	/// Session Id.
-	pub session: SessionId,
+	pub session: MessageSessionId,
 	/// Public key share.
-	pub public_share: Public,
+	pub public_share: SerializablePublic,
 }
 
-#[derive(Clone, Debug)]
+#[derive(Clone, Debug, Serialize, Deserialize)]
+/// When session error has occured.
+pub struct SessionError {
+	/// Session Id.
+	pub session: MessageSessionId,
+	/// Public key share.
+	pub error: String,
+}
+
+#[derive(Clone, Debug, Serialize, Deserialize)]
+/// When session is completed.
+pub struct SessionCompleted {
+	/// Session Id.
+	pub session: MessageSessionId,
+	/// Common (shared) encryption point.
+	pub common_point: SerializablePublic,
+	/// Encrypted point.
+	pub encrypted_point: SerializablePublic,
+}
+
+#[derive(Clone, Debug, Serialize, Deserialize)]
 /// Node is requested to decrypt data, encrypted in given session.
 pub struct InitializeDecryptionSession {
 	/// Encryption session Id.
-	pub session: SessionId,
+	pub session: MessageSessionId,
 	/// Decryption session Id.
-	pub sub_session: Secret,
+	pub sub_session: SerializableSecret,
 	/// Requestor signature.
-	pub requestor_signature: Signature,
+	pub requestor_signature: SerializableSignature,
 }
 
-#[derive(Clone, Debug)]
+#[derive(Clone, Debug, Serialize, Deserialize)]
 /// Node is responding to decryption request.
 pub struct ConfirmDecryptionInitialization {
 	/// Encryption session Id.
-	pub session: SessionId,
+	pub session: MessageSessionId,
 	/// Decryption session Id.
-	pub sub_session: Secret,
+	pub sub_session: SerializableSecret,
 	/// Is node confirmed to make a decryption?.
 	pub is_confirmed: bool,
 }
 
-#[derive(Clone, Debug)]
+#[derive(Clone, Debug, Serialize, Deserialize)]
 /// Node is requested to do a partial decryption.
 pub struct RequestPartialDecryption {
 	/// Encryption session Id.
-	pub session: SessionId,
+	pub session: MessageSessionId,
 	/// Decryption session Id.
-	pub sub_session: Secret,
+	pub sub_session: SerializableSecret,
 	/// Nodes that are agreed to do a decryption.
-	pub nodes: BTreeSet<NodeId>,
+	pub nodes: BTreeSet<MessageNodeId>,
 }
 
-#[derive(Clone, Debug)]
+#[derive(Clone, Debug, Serialize, Deserialize)]
 /// Node has partially decrypted the secret.
 pub struct PartialDecryption {
 	/// Encryption session Id.
-	pub session: SessionId,
+	pub session: MessageSessionId,
 	/// Decryption session Id.
-	pub sub_session: Secret,
+	pub sub_session: SerializableSecret,
 	/// Partially decrypted secret.
-	pub shadow_point: Public,
+	pub shadow_point: SerializablePublic,
+}
+
+#[derive(Clone, Debug, Serialize, Deserialize)]
+/// When decryption session error has occured.
+pub struct DecryptionSessionError {
+	/// Encryption session Id.
+	pub session: MessageSessionId,
+	/// Decryption session Id.
+	pub sub_session: SerializableSecret,
+	/// Public key share.
+	pub error: String,
+}
+
+impl EncryptionMessage {
+	pub fn session_id(&self) -> &SessionId {
+		match *self {
+			EncryptionMessage::InitializeSession(ref msg) => &msg.session,
+			EncryptionMessage::ConfirmInitialization(ref msg) => &msg.session,
+			EncryptionMessage::CompleteInitialization(ref msg) => &msg.session,
+			EncryptionMessage::KeysDissemination(ref msg) => &msg.session,
+			EncryptionMessage::Complaint(ref msg) => &msg.session,
+			EncryptionMessage::ComplaintResponse(ref msg) => &msg.session,
+			EncryptionMessage::PublicKeyShare(ref msg) => &msg.session,
+			EncryptionMessage::SessionError(ref msg) => &msg.session,
+			EncryptionMessage::SessionCompleted(ref msg) => &msg.session,
+		}
+	}
+}
+
+impl DecryptionMessage {
+	pub fn session_id(&self) -> &SessionId {
+		match *self {
+			DecryptionMessage::InitializeDecryptionSession(ref msg) => &msg.session,
+			DecryptionMessage::ConfirmDecryptionInitialization(ref msg) => &msg.session,
+			DecryptionMessage::RequestPartialDecryption(ref msg) => &msg.session,
+			DecryptionMessage::PartialDecryption(ref msg) => &msg.session,
+			DecryptionMessage::DecryptionSessionError(ref msg) => &msg.session,
+		}
+	}
+
+	pub fn sub_session_id(&self) -> &Secret {
+		match *self {
+			DecryptionMessage::InitializeDecryptionSession(ref msg) => &msg.sub_session,
+			DecryptionMessage::ConfirmDecryptionInitialization(ref msg) => &msg.sub_session,
+			DecryptionMessage::RequestPartialDecryption(ref msg) => &msg.sub_session,
+			DecryptionMessage::PartialDecryption(ref msg) => &msg.sub_session,
+			DecryptionMessage::DecryptionSessionError(ref msg) => &msg.sub_session,
+		}
+	}
+}
+
+impl fmt::Display for Message {
+	fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+		match *self {
+			Message::Cluster(ref message) => write!(f, "Cluster.{}", message),
+			Message::Encryption(ref message) => write!(f, "Encryption.{}", message),
+			Message::Decryption(ref message) => write!(f, "Decryption.{}", message),
+		}
+	}
+}
+
+impl fmt::Display for ClusterMessage {
+	fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+		match *self {
+			ClusterMessage::NodePublicKey(_) => write!(f, "NodePublicKey"),
+			ClusterMessage::NodePrivateKeySignature(_) => write!(f, "NodePrivateKeySignature"),
+			ClusterMessage::KeepAlive(_) => write!(f, "KeepAlive"),
+			ClusterMessage::KeepAliveResponse(_) => write!(f, "KeepAliveResponse"),
+		}
+	}
+}
+
+impl fmt::Display for EncryptionMessage {
+	fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+		match *self {
+			EncryptionMessage::InitializeSession(_) => write!(f, "InitializeSession"),
+			EncryptionMessage::ConfirmInitialization(_) => write!(f, "ConfirmInitialization"),
+			EncryptionMessage::CompleteInitialization(_) => write!(f, "CompleteInitialization"),
+			EncryptionMessage::KeysDissemination(_) => write!(f, "KeysDissemination"),
+			EncryptionMessage::Complaint(_) => write!(f, "Complaint"),
+			EncryptionMessage::ComplaintResponse(_) => write!(f, "ComplaintResponse"),
+			EncryptionMessage::PublicKeyShare(_) => write!(f, "PublicKeyShare"),
+			EncryptionMessage::SessionError(ref msg) => write!(f, "SessionError({})", msg.error),
+			EncryptionMessage::SessionCompleted(_) => write!(f, "SessionCompleted"),
+		}
+	}
+}
+
+impl fmt::Display for DecryptionMessage {
+	fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+		match *self {
+			DecryptionMessage::InitializeDecryptionSession(_) => write!(f, "InitializeDecryptionSession"),
+			DecryptionMessage::ConfirmDecryptionInitialization(_) => write!(f, "ConfirmDecryptionInitialization"),
+			DecryptionMessage::RequestPartialDecryption(_) => write!(f, "RequestPartialDecryption"),
+			DecryptionMessage::PartialDecryption(_) => write!(f, "PartialDecryption"),
+			DecryptionMessage::DecryptionSessionError(_) => write!(f, "DecryptionSessionError"),
+		}
+	}
 }

secret_store/src/key_server_cluster/mod.rs

@@ -14,21 +14,36 @@
 // You should have received a copy of the GNU General Public License
 // along with Parity.  If not, see <http://www.gnu.org/licenses/>.
 
-#![allow(dead_code)] // TODO: remove me
+use std::fmt;
-
+use std::io::Error as IoError;
-use std::collections::BTreeMap;
+use ethkey;
-use ethkey::{self, Public, Secret, Signature};
+use ethcrypto;
 use super::types::all::DocumentAddress;
 
-pub use super::acl_storage::AclStorage;
+pub use super::types::all::{NodeId, EncryptionConfiguration};
+pub use super::acl_storage::{AclStorage, DummyAclStorage};
+pub use super::key_storage::{KeyStorage, DocumentKeyShare};
+pub use super::serialization::{SerializableSignature, SerializableH256, SerializableSecret, SerializablePublic};
+pub use self::cluster::{ClusterCore, ClusterConfiguration, ClusterClient};
+pub use self::encryption_session::Session as EncryptionSession;
+pub use self::decryption_session::Session as DecryptionSession;
+
+#[cfg(test)]
+pub use super::key_storage::tests::DummyKeyStorage;
 
-pub type NodeId = Public;
 pub type SessionId = DocumentAddress;
-pub type SessionIdSignature = Signature;
 
-#[derive(Debug, PartialEq)]
+#[derive(Clone, Debug, PartialEq)]
 /// Errors which can occur during encryption/decryption session
 pub enum Error {
+	/// Invalid node address has been passed.
+	InvalidNodeAddress,
+	/// Invalid node id has been passed.
+	InvalidNodeId,
+	/// Session with the given id already exists.
+	DuplicateSessionId,
+	/// Session with the given id is unknown.
+	InvalidSessionId,
 	/// Invalid number of nodes.
 	/// There must be at least two nodes participating in encryption.
 	/// There must be at least one node participating in decryption.
@@ -39,28 +54,24 @@ pub enum Error {
 	/// Threshold value must be in [0; n - 1], where n is a number of nodes participating in the encryption.
 	InvalidThreshold,
 	/// Current state of encryption/decryption session does not allow to proceed request.
+	/// Reschedule this request for later processing.
+	TooEarlyForRequest,
+	/// Current state of encryption/decryption session does not allow to proceed request.
 	/// This means that either there is some comm-failure or node is misbehaving/cheating.
 	InvalidStateForRequest,
-	/// Some data in passed message was recognized as invalid.
+	/// Message or some data in the message was recognized as invalid.
 	/// This means that node is misbehaving/cheating.
 	InvalidMessage,
+	/// Connection to node, required for this session is not established.
+	NodeDisconnected,
 	/// Cryptographic error.
 	EthKey(String),
-}
+	/// I/O error has occured.
-
+	Io(String),
-#[derive(Debug, Clone)]
+	/// Deserialization error has occured.
-/// Data, which is stored on every node after DKG && encryption is completed.
+	Serde(String),
-pub struct EncryptedData {
+	/// Key storage error.
-	/// Decryption threshold (at least threshold + 1 nodes are required to decrypt data).
+	KeyStorage(String),
-	threshold: usize,
-	/// Nodes ids numbers.
-	id_numbers: BTreeMap<NodeId, Secret>,
-	/// Node secret share.
-	secret_share: Secret,
-	/// Common (shared) encryption point.
-	common_point: Public,
-	/// Encrypted point.
-	encrypted_point: Public,
 }
 
 impl From<ethkey::Error> for Error {
@@ -69,8 +80,50 @@ impl From<ethkey::Error> for Error {
 	}
 }
 
+impl From<ethcrypto::Error> for Error {
+	fn from(err: ethcrypto::Error) -> Self {
+		Error::EthKey(err.into())
+	}
+}
+
+impl From<IoError> for Error {
+	fn from(err: IoError) -> Self {
+		Error::Io(err.to_string())
+	}
+}
+
+impl fmt::Display for Error {
+	fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+		match *self {
+			Error::InvalidNodeAddress => write!(f, "invalid node address has been passed"),
+			Error::InvalidNodeId => write!(f, "invalid node id has been passed"),
+			Error::DuplicateSessionId => write!(f, "session with the same id is already registered"),
+			Error::InvalidSessionId => write!(f, "invalid session id has been passed"),
+			Error::InvalidNodesCount => write!(f, "invalid nodes count"),
+			Error::InvalidNodesConfiguration => write!(f, "invalid nodes configuration"),
+			Error::InvalidThreshold => write!(f, "invalid threshold value has been passed"),
+			Error::TooEarlyForRequest => write!(f, "session is not yet ready to process this request"),
+			Error::InvalidStateForRequest => write!(f, "session is in invalid state for processing this request"),
+			Error::InvalidMessage => write!(f, "invalid message is received"),
+			Error::NodeDisconnected => write!(f, "node required for this operation is currently disconnected"),
+			Error::EthKey(ref e) => write!(f, "cryptographic error {}", e),
+			Error::Io(ref e) => write!(f, "i/o error {}", e),
+			Error::Serde(ref e) => write!(f, "serde error {}", e),
+			Error::KeyStorage(ref e) => write!(f, "key storage error {}", e),
+		}
+	}
+}
+
+impl Into<String> for Error {
+	fn into(self) -> String {
+		format!("{}", self)
+	}
+}
+
 mod cluster;
 mod decryption_session;
 mod encryption_session;
+mod io;
 mod math;
 mod message;
+mod net;

secret_store/src/key_server_cluster/net/accept_connection.rs

@@ -0,0 +1,63 @@
+// Copyright 2015-2017 Parity Technologies (UK) Ltd.
+// This file is part of Parity.
+
+// Parity is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// Parity is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
+
+use std::io;
+use std::net::SocketAddr;
+use std::time::Duration;
+use std::collections::BTreeSet;
+use futures::{Future, Poll};
+use tokio_core::reactor::Handle;
+use tokio_core::net::TcpStream;
+use ethkey::KeyPair;
+use key_server_cluster::{Error, NodeId};
+use key_server_cluster::io::{accept_handshake, Handshake, Deadline, deadline};
+use key_server_cluster::net::Connection;
+
+/// Create future for accepting incoming connection.
+pub fn accept_connection(address: SocketAddr, stream: TcpStream, handle: &Handle, self_key_pair: KeyPair, trusted_nodes: BTreeSet<NodeId>) -> Deadline<AcceptConnection> {
+	let accept = AcceptConnection {
+		handshake: accept_handshake(stream, self_key_pair, trusted_nodes),
+		address: address,
+	};
+
+	deadline(Duration::new(5, 0), handle, accept).expect("Failed to create timeout")
+}
+
+/// Future for accepting incoming connection.
+pub struct AcceptConnection {
+	handshake: Handshake<TcpStream>,
+	address: SocketAddr,
+}
+
+impl Future for AcceptConnection {
+	type Item = Result<Connection, Error>;
+	type Error = io::Error;
+
+	fn poll(&mut self) -> Poll<Self::Item, Self::Error> {
+		let (stream, result) = try_ready!(self.handshake.poll());
+		let result = match result {
+			Ok(result) => result,
+			Err(err) => return Ok(Err(err).into()),
+		};
+		let connection = Connection {
+			stream: stream.into(),
+			address: self.address,
+			node_id: result.node_id,
+			key: result.shared_key,
+		};
+		Ok(Ok(connection).into())
+	}
+}

secret_store/src/key_server_cluster/net/connect.rs

@@ -0,0 +1,90 @@
+// Copyright 2015-2017 Parity Technologies (UK) Ltd.
+// This file is part of Parity.
+
+// Parity is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// Parity is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
+
+use std::collections::BTreeSet;
+use std::io;
+use std::time::Duration;
+use std::net::SocketAddr;
+use futures::{Future, Poll, Async};
+use tokio_core::reactor::Handle;
+use tokio_core::net::{TcpStream, TcpStreamNew};
+use ethkey::KeyPair;
+use key_server_cluster::{Error, NodeId};
+use key_server_cluster::io::{handshake, Handshake, Deadline, deadline};
+use key_server_cluster::net::Connection;
+
+/// Create future for connecting to other node.
+pub fn connect(address: &SocketAddr, handle: &Handle, self_key_pair: KeyPair, trusted_nodes: BTreeSet<NodeId>) -> Deadline<Connect> {
+	let connect = Connect {
+		state: ConnectState::TcpConnect(TcpStream::connect(address, handle)),
+		address: address.clone(),
+		self_key_pair: self_key_pair,
+		trusted_nodes: trusted_nodes,
+	};
+
+	deadline(Duration::new(5, 0), handle, connect).expect("Failed to create timeout")
+}
+
+enum ConnectState {
+	TcpConnect(TcpStreamNew),
+	Handshake(Handshake<TcpStream>),
+	Connected,
+}
+
+/// Future for connecting to other node.
+pub struct Connect {
+	state: ConnectState,
+	address: SocketAddr,
+	self_key_pair: KeyPair,
+	trusted_nodes: BTreeSet<NodeId>,
+}
+
+impl Future for Connect {
+	type Item = Result<Connection, Error>;
+	type Error = io::Error;
+
+	fn poll(&mut self) -> Poll<Self::Item, Self::Error> {
+		let (next, result) = match self.state {
+			ConnectState::TcpConnect(ref mut future) => {
+				let stream = try_ready!(future.poll());
+				let handshake = handshake(stream, self.self_key_pair.clone(), self.trusted_nodes.clone());
+				(ConnectState::Handshake(handshake), Async::NotReady)
+			},
+			ConnectState::Handshake(ref mut future) => {
+				let (stream, result) = try_ready!(future.poll());
+				let result = match result {
+					Ok(result) => result,
+					Err(err) => return Ok(Async::Ready(Err(err))),
+				};
+				let connection = Connection {
+					stream: stream.into(),
+					address: self.address,
+					node_id: result.node_id,
+					key: result.shared_key,
+				};
+				(ConnectState::Connected, Async::Ready(Ok(connection)))
+			},
+			ConnectState::Connected => panic!("poll Connect after it's done"),
+		};
+
+		self.state = next;
+		match result {
+			// by polling again, we register new future
+			Async::NotReady => self.poll(),
+			result => Ok(result)
+		}
+	}
+}

secret_store/src/key_server_cluster/net/connection.rs

@@ -0,0 +1,32 @@
+// Copyright 2015-2017 Parity Technologies (UK) Ltd.
+// This file is part of Parity.
+
+// Parity is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// Parity is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
+
+use std::net;
+use ethkey::Secret;
+use key_server_cluster::NodeId;
+use key_server_cluster::io::SharedTcpStream;
+
+/// Established connection data
+pub struct Connection {
+	/// Peer address.
+	pub address: net::SocketAddr,
+	/// Connection stream.
+	pub stream: SharedTcpStream,
+	/// Peer node id.
+	pub node_id: NodeId,
+	/// Encryption key.
+	pub key: Secret,
+}

secret_store/src/key_server_cluster/net/mod.rs

@@ -0,0 +1,23 @@
+// Copyright 2015-2017 Parity Technologies (UK) Ltd.
+// This file is part of Parity.
+
+// Parity is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// Parity is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
+
+mod accept_connection;
+mod connect;
+mod connection;
+
+pub use self::accept_connection::{AcceptConnection, accept_connection};
+pub use self::connect::{Connect, connect};
+pub use self::connection::Connection;

secret_store/src/key_storage.rs

@@ -15,15 +15,34 @@
 // along with Parity.  If not, see <http://www.gnu.org/licenses/>.
 
 use std::path::PathBuf;
+use std::collections::BTreeMap;
+use serde_json;
+use ethkey::{Secret, Public};
 use util::Database;
-use types::all::{Error, ServiceConfiguration, DocumentAddress, DocumentKey};
+use types::all::{Error, ServiceConfiguration, DocumentAddress, NodeId};
+use serialization::{SerializablePublic, SerializableSecret};
+
+#[derive(Debug, Clone, PartialEq)]
+/// Encrypted key share, stored by key storage on the single key server.
+pub struct DocumentKeyShare {
+	/// Decryption threshold (at least threshold + 1 nodes are required to decrypt data).
+	pub threshold: usize,
+	/// Nodes ids numbers.
+	pub id_numbers: BTreeMap<NodeId, Secret>,
+	/// Node secret share.
+	pub secret_share: Secret,
+	/// Common (shared) encryption point.
+	pub common_point: Public,
+	/// Encrypted point.
+	pub encrypted_point: Public,
+}
 
 /// Document encryption keys storage
 pub trait KeyStorage: Send + Sync {
 	/// Insert document encryption key
-	fn insert(&self, document: DocumentAddress, key: DocumentKey) -> Result<(), Error>;
+	fn insert(&self, document: DocumentAddress, key: DocumentKeyShare) -> Result<(), Error>;
 	/// Get document encryption key
-	fn get(&self, document: &DocumentAddress) -> Result<DocumentKey, Error>;
+	fn get(&self, document: &DocumentAddress) -> Result<DocumentKeyShare, Error>;
 }
 
 /// Persistent document encryption keys storage
@@ -31,6 +50,21 @@ pub struct PersistentKeyStorage {
 	db: Database,
 }
 
+#[derive(Serialize, Deserialize)]
+/// Encrypted key share, as it is stored by key storage on the single key server.
+struct SerializableDocumentKeyShare {
+	/// Decryption threshold (at least threshold + 1 nodes are required to decrypt data).
+	pub threshold: usize,
+	/// Nodes ids numbers.
+	pub id_numbers: BTreeMap<SerializablePublic, SerializableSecret>,
+	/// Node secret share.
+	pub secret_share: SerializableSecret,
+	/// Common (shared) encryption point.
+	pub common_point: SerializablePublic,
+	/// Encrypted point.
+	pub encrypted_point: SerializablePublic,
+}
+
 impl PersistentKeyStorage {
 	/// Create new persistent document encryption keys storage
 	pub fn new(config: &ServiceConfiguration) -> Result<Self, Error> {
@@ -45,41 +79,71 @@ impl PersistentKeyStorage {
 }
 
 impl KeyStorage for PersistentKeyStorage {
-	fn insert(&self, document: DocumentAddress, key: DocumentKey) -> Result<(), Error> {
+	fn insert(&self, document: DocumentAddress, key: DocumentKeyShare) -> Result<(), Error> {
+		let key: SerializableDocumentKeyShare = key.into();
+		let key = serde_json::to_vec(&key).map_err(|e| Error::Database(e.to_string()))?;
 		let mut batch = self.db.transaction();
 		batch.put(None, &document, &key);
 		self.db.write(batch).map_err(Error::Database)
 	}
 
-	fn get(&self, document: &DocumentAddress) -> Result<DocumentKey, Error> {
+	fn get(&self, document: &DocumentAddress) -> Result<DocumentKeyShare, Error> {
 		self.db.get(None, document)
 			.map_err(Error::Database)?
 			.ok_or(Error::DocumentNotFound)
 			.map(|key| key.to_vec())
+			.and_then(|key| serde_json::from_slice::<SerializableDocumentKeyShare>(&key).map_err(|e| Error::Database(e.to_string())))
+			.map(Into::into)
+	}
+}
+
+impl From<DocumentKeyShare> for SerializableDocumentKeyShare {
+	fn from(key: DocumentKeyShare) -> Self {
+		SerializableDocumentKeyShare {
+			threshold: key.threshold,
+			id_numbers: key.id_numbers.into_iter().map(|(k, v)| (k.into(), v.into())).collect(),
+			secret_share: key.secret_share.into(),
+			common_point: key.common_point.into(),
+			encrypted_point: key.encrypted_point.into(),
+		}
+	}
+}
+
+impl From<SerializableDocumentKeyShare> for DocumentKeyShare {
+	fn from(key: SerializableDocumentKeyShare) -> Self {
+		DocumentKeyShare {
+			threshold: key.threshold,
+			id_numbers: key.id_numbers.into_iter().map(|(k, v)| (k.into(), v.into())).collect(),
+			secret_share: key.secret_share.into(),
+			common_point: key.common_point.into(),
+			encrypted_point: key.encrypted_point.into(),
+		}
 	}
 }
 
 #[cfg(test)]
 pub mod tests {
-	use std::collections::HashMap;
+	use std::collections::{BTreeMap, HashMap};
 	use parking_lot::RwLock;
 	use devtools::RandomTempPath;
-	use super::super::types::all::{Error, ServiceConfiguration, DocumentAddress, DocumentKey};
+	use ethkey::{Random, Generator};
-	use super::{KeyStorage, PersistentKeyStorage};
+	use super::super::types::all::{Error, NodeAddress, ServiceConfiguration, ClusterConfiguration,
+		DocumentAddress, EncryptionConfiguration};
+	use super::{KeyStorage, PersistentKeyStorage, DocumentKeyShare};
 
 	#[derive(Default)]
 	/// In-memory document encryption keys storage
 	pub struct DummyKeyStorage {
-		keys: RwLock<HashMap<DocumentAddress, DocumentKey>>,
+		keys: RwLock<HashMap<DocumentAddress, DocumentKeyShare>>,
 	}
 
 	impl KeyStorage for DummyKeyStorage {
-		fn insert(&self, document: DocumentAddress, key: DocumentKey) -> Result<(), Error> {
+		fn insert(&self, document: DocumentAddress, key: DocumentKeyShare) -> Result<(), Error> {
 			self.keys.write().insert(document, key);
 			Ok(())
 		}
 
-		fn get(&self, document: &DocumentAddress) -> Result<DocumentKey, Error> {
+		fn get(&self, document: &DocumentAddress) -> Result<DocumentKeyShare, Error> {
 			self.keys.read().get(document).cloned().ok_or(Error::DocumentNotFound)
 		}
 	}
@@ -88,15 +152,46 @@ pub mod tests {
 	fn persistent_key_storage() {
 		let path = RandomTempPath::create_dir();
 		let config = ServiceConfiguration {
-			listener_addr: "0.0.0.0".to_owned(),
+			listener_address: NodeAddress {
-			listener_port: 8082,
+				address: "0.0.0.0".to_owned(),
+				port: 8082,
+			},
 			data_path: path.as_str().to_owned(),
+			cluster_config: ClusterConfiguration {
+				threads: 1,
+				self_private: (**Random.generate().unwrap().secret().clone()).into(),
+				listener_address: NodeAddress {
+					address: "0.0.0.0".to_owned(),
+					port: 8083,
+				},
+				nodes: BTreeMap::new(),
+				allow_connecting_to_higher_nodes: false,
+				encryption_config: EncryptionConfiguration {
+					key_check_timeout_ms: 10,
+				},
+			},
 		};
 		
 		let key1 = DocumentAddress::from(1);
-		let value1: DocumentKey = vec![0x77, 0x88];
+		let value1 = DocumentKeyShare {
+			threshold: 100,
+			id_numbers: vec![
+				(Random.generate().unwrap().public().clone(), Random.generate().unwrap().secret().clone())
+			].into_iter().collect(),
+			secret_share: Random.generate().unwrap().secret().clone(),
+			common_point: Random.generate().unwrap().public().clone(),
+			encrypted_point: Random.generate().unwrap().public().clone(),
+		};
 		let key2 = DocumentAddress::from(2);
-		let value2: DocumentKey = vec![0x11, 0x22];
+		let value2 = DocumentKeyShare {
+			threshold: 200,
+			id_numbers: vec![
+				(Random.generate().unwrap().public().clone(), Random.generate().unwrap().secret().clone())
+			].into_iter().collect(),
+			secret_share: Random.generate().unwrap().secret().clone(),
+			common_point: Random.generate().unwrap().public().clone(),
+			encrypted_point: Random.generate().unwrap().public().clone(),
+		};
 		let key3 = DocumentAddress::from(3);
 
 		let key_storage = PersistentKeyStorage::new(&config).unwrap();

secret_store/src/lib.rs

@@ -14,10 +14,22 @@
 // You should have received a copy of the GNU General Public License
 // along with Parity.  If not, see <http://www.gnu.org/licenses/>.
 
+extern crate byteorder;
 #[macro_use]
 extern crate log;
+#[macro_use]
+extern crate futures;
+extern crate futures_cpupool;
 extern crate hyper;
 extern crate parking_lot;
+extern crate rustc_serialize;
+extern crate serde;
+extern crate serde_json;
+#[macro_use]
+extern crate serde_derive;
+extern crate tokio_core;
+extern crate tokio_service;
+extern crate tokio_proto;
 extern crate url;
 
 extern crate ethcore_devtools as devtools;
@@ -38,16 +50,19 @@ mod acl_storage;
 mod http_listener;
 mod key_server;
 mod key_storage;
+mod serialization;
 
 pub use types::all::{DocumentAddress, DocumentKey, DocumentEncryptedKey, RequestSignature, Public,
-	Error, ServiceConfiguration};
+	Error, NodeAddress, ServiceConfiguration, ClusterConfiguration, EncryptionConfiguration};
 pub use traits::{KeyServer};
 
 /// Start new key server instance
 pub fn start(config: ServiceConfiguration) -> Result<Box<KeyServer>, Error> {
-	let acl_storage = acl_storage::DummyAclStorage::default();
+	use std::sync::Arc;
-	let key_storage = key_storage::PersistentKeyStorage::new(&config)?;
+
-	let key_server = key_server::KeyServerImpl::new(acl_storage, key_storage);
+	let acl_storage = Arc::new(acl_storage::DummyAclStorage::default());
+	let key_storage = Arc::new(key_storage::PersistentKeyStorage::new(&config)?);
+	let key_server = key_server::KeyServerImpl::new(&config.cluster_config, acl_storage, key_storage)?;
 	let listener = http_listener::KeyServerHttpListener::start(config, key_server)?;
 	Ok(Box::new(listener))
 }

secret_store/src/serialization.rs

@@ -0,0 +1,260 @@
+// Copyright 2015-2017 Parity Technologies (UK) Ltd.
+// This file is part of Parity.
+
+// Parity is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// Parity is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
+
+use std::fmt;
+use std::cmp::{Ord, PartialOrd, Ordering};
+use std::ops::Deref;
+use rustc_serialize::hex::ToHex;
+use serde::{Serialize, Deserialize, Serializer, Deserializer};
+use serde::de::{Visitor, Error as SerdeError};
+use ethkey::{Public, Secret, Signature};
+use util::H256;
+
+#[derive(Clone, Debug)]
+/// Serializable Signature.
+pub struct SerializableSignature(Signature);
+
+impl<T> From<T> for SerializableSignature where Signature: From<T> {
+	fn from(s: T) -> SerializableSignature {
+		SerializableSignature(s.into())
+	}
+}
+
+impl Into<Signature> for SerializableSignature {
+	fn into(self) -> Signature {
+		self.0
+	}
+}
+
+impl Deref for SerializableSignature {
+	type Target = Signature;
+
+	fn deref(&self) -> &Signature {
+		&self.0
+	}
+}
+
+impl Serialize for SerializableSignature {
+	fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error> where S: Serializer {
+		serializer.serialize_str(&(*self.0).to_hex())
+	}
+}
+
+impl Deserialize for SerializableSignature {
+	fn deserialize<D>(deserializer: D) -> Result<Self, D::Error> where D: Deserializer {
+		struct HashVisitor;
+
+		impl Visitor for HashVisitor {
+			type Value = SerializableSignature;
+
+			fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
+				write!(formatter, "a hex-encoded Signature")
+			}
+
+			fn visit_str<E>(self, value: &str) -> Result<Self::Value, E> where E: SerdeError {
+				value.parse().map(|s| SerializableSignature(s)).map_err(SerdeError::custom)
+			}
+
+			fn visit_string<E>(self, value: String) -> Result<Self::Value, E> where E: SerdeError {
+				self.visit_str(value.as_ref())
+			}
+		}
+
+		deserializer.deserialize(HashVisitor)
+	}
+}
+
+#[derive(Clone, Debug)]
+/// Serializable H256.
+pub struct SerializableH256(H256);
+
+impl<T> From<T> for SerializableH256 where H256: From<T> {
+	fn from(s: T) -> SerializableH256 {
+		SerializableH256(s.into())
+	}
+}
+
+impl Into<H256> for SerializableH256 {
+	fn into(self) -> H256 {
+		self.0
+	}
+}
+
+impl Deref for SerializableH256 {
+	type Target = H256;
+
+	fn deref(&self) -> &H256 {
+		&self.0
+	}
+}
+
+impl Serialize for SerializableH256 {
+	fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error> where S: Serializer {
+		serializer.serialize_str(&(*self.0).to_hex())
+	}
+}
+
+impl Deserialize for SerializableH256 {
+	fn deserialize<D>(deserializer: D) -> Result<Self, D::Error> where D: Deserializer {
+		struct HashVisitor;
+
+		impl Visitor for HashVisitor {
+			type Value = SerializableH256;
+
+			fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
+				write!(formatter, "a hex-encoded H256")
+			}
+
+			fn visit_str<E>(self, value: &str) -> Result<Self::Value, E> where E: SerdeError {
+				value.parse().map(|s| SerializableH256(s)).map_err(SerdeError::custom)
+			}
+
+			fn visit_string<E>(self, value: String) -> Result<Self::Value, E> where E: SerdeError {
+				self.visit_str(value.as_ref())
+			}
+		}
+
+		deserializer.deserialize(HashVisitor)
+	}
+}
+
+#[derive(Clone, Debug)]
+/// Serializable EC scalar/secret key.
+pub struct SerializableSecret(Secret);
+
+impl<T> From<T> for SerializableSecret where Secret: From<T> {
+	fn from(s: T) -> SerializableSecret {
+		SerializableSecret(s.into())
+	}
+}
+
+impl Into<Secret> for SerializableSecret {
+	fn into(self) -> Secret {
+		self.0
+	}
+}
+
+impl Deref for SerializableSecret {
+	type Target = Secret;
+
+	fn deref(&self) -> &Secret {
+		&self.0
+	}
+}
+
+impl Serialize for SerializableSecret {
+	fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error> where S: Serializer {
+		serializer.serialize_str(&(*self.0).to_hex())
+	}
+}
+
+impl Deserialize for SerializableSecret {
+	fn deserialize<D>(deserializer: D) -> Result<Self, D::Error> where D: Deserializer {
+		struct HashVisitor;
+
+		impl Visitor for HashVisitor {
+			type Value = SerializableSecret;
+
+			fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
+				write!(formatter, "a hex-encoded EC scalar")
+			}
+
+			fn visit_str<E>(self, value: &str) -> Result<Self::Value, E> where E: SerdeError {
+				value.parse().map(|s| SerializableSecret(s)).map_err(SerdeError::custom)
+			}
+
+			fn visit_string<E>(self, value: String) -> Result<Self::Value, E> where E: SerdeError {
+				self.visit_str(value.as_ref())
+			}
+		}
+
+		deserializer.deserialize(HashVisitor)
+	}
+}
+
+#[derive(Clone, Debug)]
+/// Serializable EC point/public key.
+pub struct SerializablePublic(Public);
+
+impl<T> From<T> for SerializablePublic where Public: From<T> {
+	fn from(p: T) -> SerializablePublic {
+		SerializablePublic(p.into())
+	}
+}
+
+impl Into<Public> for SerializablePublic {
+	fn into(self) -> Public {
+		self.0
+	}
+}
+
+impl Deref for SerializablePublic {
+	type Target = Public;
+
+	fn deref(&self) -> &Public {
+		&self.0
+	}
+}
+
+impl Eq for SerializablePublic { }
+
+impl PartialEq for SerializablePublic {
+	fn eq(&self, other: &SerializablePublic) -> bool {
+		self.0.eq(&other.0)
+	}
+}
+
+impl Ord for SerializablePublic {
+	fn cmp(&self, other: &SerializablePublic) -> Ordering {
+		self.0.cmp(&other.0)
+	}
+}
+
+impl PartialOrd for SerializablePublic {
+	fn partial_cmp(&self, other: &SerializablePublic) -> Option<Ordering> {
+		self.0.partial_cmp(&other.0)
+	}
+}
+
+impl Serialize for SerializablePublic {
+	fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error> where S: Serializer {
+		serializer.serialize_str(&(*self.0).to_hex())
+	}
+}
+
+impl Deserialize for SerializablePublic {
+	fn deserialize<D>(deserializer: D) -> Result<Self, D::Error> where D: Deserializer {
+		struct HashVisitor;
+
+		impl Visitor for HashVisitor {
+			type Value = SerializablePublic;
+
+			fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
+				write!(formatter, "a hex-encoded EC point")
+			}
+
+			fn visit_str<E>(self, value: &str) -> Result<Self::Value, E> where E: SerdeError {
+				value.parse().map(|s| SerializablePublic(s)).map_err(SerdeError::custom)
+			}
+
+			fn visit_string<E>(self, value: String) -> Result<Self::Value, E> where E: SerdeError {
+				self.visit_str(value.as_ref())
+			}
+		}
+
+		deserializer.deserialize(HashVisitor)
+	}
+}

secret_store/src/traits.rs

@@ -19,6 +19,8 @@ use types::all::{Error, RequestSignature, DocumentAddress, DocumentEncryptedKey}
 #[ipc(client_ident="RemoteKeyServer")]
 /// Secret store key server
 pub trait KeyServer: Send + Sync {
+	/// Generate encryption key for given document.
+	fn generate_document_key(&self, signature: &RequestSignature, document: &DocumentAddress, threshold: usize) -> Result<DocumentEncryptedKey, Error>;
 	/// Request encryption key of given document for given requestor
 	fn document_key(&self, signature: &RequestSignature, document: &DocumentAddress) -> Result<DocumentEncryptedKey, Error>;
 }

secret_store/src/types/all.rs

@@ -15,10 +15,14 @@
 // along with Parity.  If not, see <http://www.gnu.org/licenses/>.
 
 use std::fmt;
+use std::collections::BTreeMap;
 
 use ethkey;
 use util;
+use key_server_cluster;
 
+/// Node id.
+pub type NodeId = ethkey::Public;
 /// Document address type.
 pub type DocumentAddress = util::H256;
 /// Document key type.
@@ -46,16 +50,53 @@ pub enum Error {
 	Internal(String),
 }
 
+#[derive(Debug)]
+#[binary]
+/// Secret store configuration
+pub struct NodeAddress {
+	/// IP address.
+	pub address: String,
+	/// IP port.
+	pub port: u16,
+}
+
 #[derive(Debug)]
 #[binary]
 /// Secret store configuration
 pub struct ServiceConfiguration {
-	/// Interface to listen to
+	/// HTTP listener address.
-	pub listener_addr: String,
+	pub listener_address: NodeAddress,
-	/// Port to listen to
-	pub listener_port: u16,
 	/// Data directory path for secret store
 	pub data_path: String,
+	/// Cluster configuration.
+	pub cluster_config: ClusterConfiguration,
+}
+
+#[derive(Debug)]
+#[binary]
+/// Key server cluster configuration
+pub struct ClusterConfiguration {
+	/// Number of threads reserved by cluster.
+	pub threads: usize,
+	/// Private key this node holds.
+	pub self_private: Vec<u8>, // holds ethkey::Secret
+	/// This node address.
+	pub listener_address: NodeAddress,
+	/// All cluster nodes addresses.
+	pub nodes: BTreeMap<ethkey::Public, NodeAddress>,
+	/// Allow outbound connections to 'higher' nodes.
+	/// This is useful for tests, but slower a bit for production.
+	pub allow_connecting_to_higher_nodes: bool,
+	/// Encryption session configuration.
+	pub encryption_config: EncryptionConfiguration,
+}
+
+#[derive(Clone, Debug)]
+#[binary]
+/// Encryption parameters.
+pub struct EncryptionConfiguration {
+	/// Key check timeout.
+	pub key_check_timeout_ms: u64,
 }
 
 impl fmt::Display for Error {
@@ -70,6 +111,18 @@ impl fmt::Display for Error {
 	}
 }
 
+impl From<ethkey::Error> for Error {
+	fn from(err: ethkey::Error) -> Self {
+		Error::Internal(err.into())
+	}
+}
+
+impl From<key_server_cluster::Error> for Error {
+	fn from(err: key_server_cluster::Error) -> Self {
+		Error::Internal(err.into())
+	}
+}
+
 impl Into<String> for Error {
 	fn into(self) -> String {
 		format!("{}", self)