Merge pull request #1887 from ethcore/stable-staging

Backports to stable

Cargo.lock

@@ -1,6 +1,6 @@
 [root]
 name = "parity"
-version = "1.2.0"
+version = "1.2.4"
 dependencies = [
  "ansi_term 0.7.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "clippy 0.0.77 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -16,11 +16,11 @@ dependencies = [
  "ethcore-ipc-nano 1.2.0",
  "ethcore-rpc 1.2.0",
  "ethcore-signer 1.2.0",
- "ethcore-util 1.2.0",
+ "ethcore-util 1.2.4",
  "ethsync 1.2.0",
  "fdlimit 0.1.0",
  "hyper 0.8.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "json-ipc-server 0.2.3 (git+https://github.com/ethcore/json-ipc-server.git)",
+ "json-ipc-server 0.2.4 (git+https://github.com/ethcore/json-ipc-server.git)",
  "log 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "num_cpus 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",
  "number_prefix 0.2.5 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -104,14 +104,17 @@ version = "0.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
-name = "byteorder"
-version = "0.5.2"
+name = "bytes"
+version = "0.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "bytes"
-version = "0.3.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
+version = "0.4.0-dev"
+source = "git+https://github.com/carllerche/bytes#6529f6392a9717585b8d67e1db96e6fa0fb6cb1f"
+dependencies = [
+ "stable-heap 0.1.0 (git+https://github.com/carllerche/stable-heap?rev=3c5cd1ca47)",
+]
 
 [[package]]
 name = "cfg-if"
@@ -164,7 +167,7 @@ version = "0.2.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "time 0.1.35 (registry+https://github.com/rust-lang/crates.io-index)",
- "url 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "url 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -257,10 +260,11 @@ dependencies = [
  "ethcore-devtools 1.2.0",
  "ethcore-ipc 1.2.0",
  "ethcore-ipc-codegen 1.2.0",
- "ethcore-util 1.2.0",
+ "ethcore-util 1.2.4",
  "ethjson 0.1.0",
  "ethstore 0.1.0",
  "heapsize 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "hyper 0.9.4 (git+https://github.com/ethcore/hyper)",
  "lazy_static 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "num_cpus 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -277,22 +281,22 @@ version = "1.2.0"
 dependencies = [
  "clippy 0.0.77 (registry+https://github.com/rust-lang/crates.io-index)",
  "ethcore-rpc 1.2.0",
- "ethcore-util 1.2.0",
- "hyper 0.9.3 (git+https://github.com/ethcore/hyper)",
+ "ethcore-util 1.2.4",
+ "hyper 0.9.4 (git+https://github.com/ethcore/hyper)",
  "jsonrpc-core 2.0.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "jsonrpc-http-server 5.1.0 (git+https://github.com/ethcore/jsonrpc-http-server.git)",
  "log 0.3.6 (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 0.3.0 (git+https://github.com/ethcore/parity-dapps-rs.git)",
- "parity-dapps-builtins 0.5.1 (git+https://github.com/ethcore/parity-dapps-builtins-rs.git)",
- "parity-dapps-status 0.5.0 (git+https://github.com/ethcore/parity-dapps-status-rs.git)",
- "parity-dapps-wallet 0.6.1 (git+https://github.com/ethcore/parity-dapps-wallet-rs.git)",
+ "parity-dapps 0.6.0 (git+https://github.com/ethcore/parity-ui.git)",
+ "parity-dapps-home 0.6.0 (git+https://github.com/ethcore/parity-ui.git)",
+ "parity-dapps-status 0.6.0 (git+https://github.com/ethcore/parity-ui.git)",
+ "parity-dapps-wallet 0.6.0 (git+https://github.com/ethcore/parity-ui.git)",
  "rustc-serialize 0.3.19 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 0.7.9 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_codegen 0.7.9 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_json 0.7.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "syntex 0.33.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "url 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "url 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -307,7 +311,7 @@ name = "ethcore-ipc"
 version = "1.2.0"
 dependencies = [
  "ethcore-devtools 1.2.0",
- "ethcore-util 1.2.0",
+ "ethcore-util 1.2.4",
  "nanomsg 0.5.1 (git+https://github.com/ethcore/nanomsg.rs.git)",
  "semver 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -341,10 +345,10 @@ dependencies = [
  "ethash 1.2.0",
  "ethcore 1.2.0",
  "ethcore-devtools 1.2.0",
- "ethcore-util 1.2.0",
+ "ethcore-util 1.2.4",
  "ethjson 0.1.0",
  "ethsync 1.2.0",
- "json-ipc-server 0.2.3 (git+https://github.com/ethcore/json-ipc-server.git)",
+ "json-ipc-server 0.2.4 (git+https://github.com/ethcore/json-ipc-server.git)",
  "jsonrpc-core 2.0.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "jsonrpc-http-server 5.1.0 (git+https://github.com/ethcore/jsonrpc-http-server.git)",
  "log 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -363,19 +367,20 @@ dependencies = [
  "clippy 0.0.77 (registry+https://github.com/rust-lang/crates.io-index)",
  "env_logger 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "ethcore-rpc 1.2.0",
- "ethcore-util 1.2.0",
+ "ethcore-util 1.2.4",
  "jsonrpc-core 2.0.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "parity-minimal-sysui 0.1.0 (git+https://github.com/ethcore/parity-dapps-minimal-sysui-rs.git)",
+ "parity-dapps-signer 0.6.0 (git+https://github.com/ethcore/parity-ui.git)",
  "rand 0.3.14 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc_version 0.1.7 (registry+https://github.com/rust-lang/crates.io-index)",
- "ws 0.5.1 (git+https://github.com/ethcore/ws-rs.git)",
+ "ws 0.5.2 (git+https://github.com/ethcore/ws-rs.git?branch=mio-upstream-stable)",
 ]
 
 [[package]]
 name = "ethcore-util"
-version = "1.2.0"
+version = "1.2.4"
 dependencies = [
+ "ansi_term 0.7.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "arrayvec 0.3.16 (registry+https://github.com/rust-lang/crates.io-index)",
  "bigint 0.1.0",
  "chrono 0.2.22 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -412,7 +417,7 @@ dependencies = [
 name = "ethjson"
 version = "0.1.0"
 dependencies = [
- "ethcore-util 1.2.0",
+ "ethcore-util 1.2.4",
  "rustc-serialize 0.3.19 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 0.7.9 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_codegen 0.7.9 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -454,7 +459,7 @@ dependencies = [
  "clippy 0.0.77 (registry+https://github.com/rust-lang/crates.io-index)",
  "env_logger 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "ethcore 1.2.0",
- "ethcore-util 1.2.0",
+ "ethcore-util 1.2.4",
  "heapsize 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand 0.3.14 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -546,23 +551,22 @@ dependencies = [
 
 [[package]]
 name = "hyper"
-version = "0.9.3"
-source = "git+https://github.com/ethcore/hyper#dbb4cf160ebf242f7f0459d547c40e9e6877ccf4"
+version = "0.9.4"
+source = "git+https://github.com/ethcore/hyper#9e346c1d4bc30cd4142dea9d8a0b117d30858ca4"
 dependencies = [
  "cookie 0.2.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "httparse 1.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "language-tags 0.2.2 (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)",
- "mio 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "rotor 0.6.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rotor 0.6.3 (git+https://github.com/ethcore/rotor)",
  "rustc-serialize 0.3.19 (registry+https://github.com/rust-lang/crates.io-index)",
- "spmc 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "spmc 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "time 0.1.35 (registry+https://github.com/rust-lang/crates.io-index)",
  "traitobject 0.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "typeable 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "unicase 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "url 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "url 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "vecio 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -595,8 +599,8 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "json-ipc-server"
-version = "0.2.3"
-source = "git+https://github.com/ethcore/json-ipc-server.git#bfe16b66b2e9412d153b1ea53bc078d74037da7f"
+version = "0.2.4"
+source = "git+https://github.com/ethcore/json-ipc-server.git#56b6307130710ebc73cb9be087b6ed0b6c400bcf"
 dependencies = [
  "bytes 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "env_logger 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -604,7 +608,7 @@ dependencies = [
  "lazy_static 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "mio 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "miow 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "miow 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "slab 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -630,9 +634,9 @@ dependencies = [
 [[package]]
 name = "jsonrpc-http-server"
 version = "5.1.0"
-source = "git+https://github.com/ethcore/jsonrpc-http-server.git#0c99d308bc15e8fae50642eff77a3e1fd7610652"
+source = "git+https://github.com/ethcore/jsonrpc-http-server.git#e59c2fbaca499620874023755cb91f05b858ffe7"
 dependencies = [
- "hyper 0.9.3 (git+https://github.com/ethcore/hyper)",
+ "hyper 0.9.4 (git+https://github.com/ethcore/hyper)",
  "jsonrpc-core 2.0.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "unicase 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -712,31 +716,15 @@ dependencies = [
  "unicase 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
-[[package]]
-name = "mio"
-version = "0.5.0"
-source = "git+https://github.com/carllerche/mio.git#f4aa49a9d2c4507fb33a4533d5238e0365f67c99"
-dependencies = [
- "bytes 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.12 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "miow 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "net2 0.2.23 (registry+https://github.com/rust-lang/crates.io-index)",
- "nix 0.5.0-pre (git+https://github.com/carllerche/nix-rust?rev=c4257f8a76)",
- "slab 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "time 0.1.35 (registry+https://github.com/rust-lang/crates.io-index)",
- "winapi 0.2.6 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "mio"
 version = "0.5.1"
-source = "git+https://github.com/ethcore/mio?branch=v0.5.x#1fc881771fb8c2517317b4f805d7b88235be422b"
+source = "git+https://github.com/ethcore/mio?branch=v0.5.x#3842d3b250ffd7bd9b16f9586b875ddcbac2b0dd"
 dependencies = [
  "bytes 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.12 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "miow 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "miow 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "net2 0.2.23 (registry+https://github.com/rust-lang/crates.io-index)",
  "nix 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "slab 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -752,7 +740,7 @@ dependencies = [
  "bytes 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.12 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "miow 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "miow 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "net2 0.2.23 (registry+https://github.com/rust-lang/crates.io-index)",
  "nix 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "slab 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -760,9 +748,24 @@ dependencies = [
  "winapi 0.2.6 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "mio"
+version = "0.6.0-dev"
+source = "git+https://github.com/carllerche/mio?rev=62ec763c9cc34d8a452ed0392c575c50ddd5fc8d#62ec763c9cc34d8a452ed0392c575c50ddd5fc8d"
+dependencies = [
+ "kernel32-sys 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.12 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "miow 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "net2 0.2.23 (registry+https://github.com/rust-lang/crates.io-index)",
+ "nix 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "slab 0.2.0 (git+https://github.com/carllerche/slab?rev=5476efcafb)",
+ "winapi 0.2.6 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "miow"
-version = "0.1.2"
+version = "0.1.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "kernel32-sys 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -801,15 +804,6 @@ dependencies = [
  "ws2_32-sys 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
-[[package]]
-name = "nix"
-version = "0.5.0-pre"
-source = "git+https://github.com/carllerche/nix-rust?rev=c4257f8a76#c4257f8a76b69b0d2e9a001d83e4bef67c03b23f"
-dependencies = [
- "bitflags 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.12 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "nix"
 version = "0.5.0"
@@ -819,6 +813,19 @@ dependencies = [
  "libc 0.2.12 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "nix"
+version = "0.6.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "bitflags 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cfg-if 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.12 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rustc_version 0.1.7 (registry+https://github.com/rust-lang/crates.io-index)",
+ "semver 0.1.20 (registry+https://github.com/rust-lang/crates.io-index)",
+ "void 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "nodrop"
 version = "0.1.6"
@@ -921,8 +928,8 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "parity-dapps"
-version = "0.3.0"
-source = "git+https://github.com/ethcore/parity-dapps-rs.git#8cc812c26c903cf5764ce0f4cc3f2a7c3ddb0dc2"
+version = "0.6.0"
+source = "git+https://github.com/ethcore/parity-ui.git#7120546d08d4d9eb648e255c04935002223d362f"
 dependencies = [
  "aster 0.17.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "glob 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -934,34 +941,37 @@ dependencies = [
 ]
 
 [[package]]
-name = "parity-dapps-builtins"
-version = "0.5.1"
-source = "git+https://github.com/ethcore/parity-dapps-builtins-rs.git#650b0d94d076635904b86c1fd45c5f4a2061463f"
+name = "parity-dapps-home"
+version = "0.6.0"
+source = "git+https://github.com/ethcore/parity-ui.git#7120546d08d4d9eb648e255c04935002223d362f"
 dependencies = [
- "parity-dapps 0.3.0 (git+https://github.com/ethcore/parity-dapps-rs.git)",
+ "parity-dapps 0.6.0 (git+https://github.com/ethcore/parity-ui.git)",
+]
+
+[[package]]
+name = "parity-dapps-signer"
+version = "0.6.0"
+source = "git+https://github.com/ethcore/parity-ui.git#7120546d08d4d9eb648e255c04935002223d362f"
+dependencies = [
+ "parity-dapps 0.6.0 (git+https://github.com/ethcore/parity-ui.git)",
 ]
 
 [[package]]
 name = "parity-dapps-status"
-version = "0.5.0"
-source = "git+https://github.com/ethcore/parity-dapps-status-rs.git#0cdd3512004e403aff7da3b8c16ba0bf5d6c911c"
+version = "0.6.0"
+source = "git+https://github.com/ethcore/parity-ui.git#7120546d08d4d9eb648e255c04935002223d362f"
 dependencies = [
- "parity-dapps 0.3.0 (git+https://github.com/ethcore/parity-dapps-rs.git)",
+ "parity-dapps 0.6.0 (git+https://github.com/ethcore/parity-ui.git)",
 ]
 
 [[package]]
 name = "parity-dapps-wallet"
-version = "0.6.1"
-source = "git+https://github.com/ethcore/parity-dapps-wallet-rs.git#8923d4c73359c75ce04f0639bbcde46adb846b81"
+version = "0.6.0"
+source = "git+https://github.com/ethcore/parity-ui.git#7120546d08d4d9eb648e255c04935002223d362f"
 dependencies = [
- "parity-dapps 0.3.0 (git+https://github.com/ethcore/parity-dapps-rs.git)",
+ "parity-dapps 0.6.0 (git+https://github.com/ethcore/parity-ui.git)",
 ]
 
-[[package]]
-name = "parity-minimal-sysui"
-version = "0.1.0"
-source = "git+https://github.com/ethcore/parity-dapps-minimal-sysui-rs.git#3c6ad40680126a760eb867b07b506ea996819ce3"
-
 [[package]]
 name = "phf"
 version = "0.7.14"
@@ -1057,7 +1067,7 @@ dependencies = [
 
 [[package]]
 name = "quick-error"
-version = "0.2.2"
+version = "1.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
@@ -1103,7 +1113,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 [[package]]
 name = "rocksdb"
 version = "0.4.5"
-source = "git+https://github.com/ethcore/rust-rocksdb#6f3c68f5f075433d206be4af6a620651cd9f8541"
+source = "git+https://github.com/ethcore/rust-rocksdb#6472a9dce16c267a3acec2ee6fd01d1bf8de4913"
 dependencies = [
  "libc 0.2.12 (registry+https://github.com/rust-lang/crates.io-index)",
  "rocksdb-sys 0.3.0 (git+https://github.com/ethcore/rust-rocksdb)",
@@ -1112,7 +1122,7 @@ dependencies = [
 [[package]]
 name = "rocksdb-sys"
 version = "0.3.0"
-source = "git+https://github.com/ethcore/rust-rocksdb#6f3c68f5f075433d206be4af6a620651cd9f8541"
+source = "git+https://github.com/ethcore/rust-rocksdb#6472a9dce16c267a3acec2ee6fd01d1bf8de4913"
 dependencies = [
  "gcc 0.3.28 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.12 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1121,12 +1131,11 @@ dependencies = [
 [[package]]
 name = "rotor"
 version = "0.6.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
+source = "git+https://github.com/ethcore/rotor#e63d45137b2eb66d1e085a7c6321a5db8b187576"
 dependencies = [
  "log 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "mio 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "quick-error 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "time 0.1.35 (registry+https://github.com/rust-lang/crates.io-index)",
+ "mio 0.5.1 (git+https://github.com/ethcore/mio?branch=v0.5.x)",
+ "quick-error 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "void 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -1215,11 +1224,8 @@ dependencies = [
 
 [[package]]
 name = "sha1"
-version = "0.1.1"
+version = "0.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "byteorder 0.5.2 (registry+https://github.com/rust-lang/crates.io-index)",
-]
 
 [[package]]
 name = "sha3"
@@ -1233,6 +1239,11 @@ name = "slab"
 version = "0.1.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
+name = "slab"
+version = "0.2.0"
+source = "git+https://github.com/carllerche/slab?rev=5476efcafb#5476efcafbc5ef4d7315b1bea3f756d8a1fe975e"
+
 [[package]]
 name = "slab"
 version = "0.2.0"
@@ -1249,9 +1260,14 @@ dependencies = [
 
 [[package]]
 name = "spmc"
-version = "0.2.0"
+version = "0.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
+name = "stable-heap"
+version = "0.1.0"
+source = "git+https://github.com/carllerche/stable-heap?rev=3c5cd1ca47#3c5cd1ca4706f167a1de85658b5af0d6d3e65165"
+
 [[package]]
 name = "strsim"
 version = "0.3.0"
@@ -1408,7 +1424,7 @@ dependencies = [
 
 [[package]]
 name = "url"
-version = "1.0.0"
+version = "1.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "idna 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1472,16 +1488,17 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "ws"
-version = "0.5.1"
-source = "git+https://github.com/ethcore/ws-rs.git#d5745df8ea1ab82cd2b844f15ca1ac759e7aa9f5"
+version = "0.5.2"
+source = "git+https://github.com/ethcore/ws-rs.git?branch=mio-upstream-stable#afbff59776ce16ccec5ee9e218b8891830ee6fdf"
 dependencies = [
+ "bytes 0.4.0-dev (git+https://github.com/carllerche/bytes)",
  "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)",
- "mio 0.5.0 (git+https://github.com/carllerche/mio.git)",
+ "mio 0.6.0-dev (git+https://github.com/carllerche/mio?rev=62ec763c9cc34d8a452ed0392c575c50ddd5fc8d)",
  "rand 0.3.14 (registry+https://github.com/rust-lang/crates.io-index)",
- "sha1 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "slab 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "url 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "sha1 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "slab 0.2.0 (git+https://github.com/carllerche/slab?rev=5476efcafb)",
+ "url 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]

Cargo.toml

@@ -1,7 +1,7 @@
 [package]
 description = "Ethcore client."
 name = "parity"
-version = "1.2.0"
+version = "1.2.4"
 license = "GPL-3.0"
 authors = ["Ethcore <admin@ethcore.io>"]
 build = "build.rs"
@@ -47,9 +47,11 @@ version = "0.8"
 default-features = false
 
 [features]
-default = ["rpc", "dapps", "ethcore-signer"]
-rpc = ["ethcore-rpc"]
+default = ["rpc", "ethcore-signer", "ui", "use-precompiled-js"]
+ui = ["dapps", "ethcore-signer/ui"]
+use-precompiled-js = ["ethcore-dapps/use-precompiled-js", "ethcore-signer/use-precompiled-js"]
 dapps = ["ethcore-dapps"]
+rpc = ["ethcore-rpc"]
 dev = ["clippy", "ethcore/dev", "ethcore-util/dev", "ethsync/dev", "ethcore-rpc/dev",
 "ethcore-dapps/dev", "ethcore-signer/dev"]
 travis-beta = ["ethcore/json-tests"]

README.md

@@ -31,7 +31,7 @@ In a near-future release, it will be easy to install Dapps and use them through
 If you run into an issue while using parity, feel free to file one in this repository
 or hop on our [gitter chat room]([gitter-url]) to ask a question. We are glad to help!
 
-Parity's current release is 1.1. You can download it at https://ethcore.io/parity.html or follow the instructions
+Parity's current release is 1.2. You can download it at https://ethcore.io/parity.html or follow the instructions
 below to build from source.
 
 ----

appveyor.yml

@@ -1,13 +1,27 @@
 environment:
   matrix:
   - TARGET: x86_64-pc-windows-msvc
+  cert:
+    secure: ESPpYVVAMG1fbJx6kq4ct/g9SQTXac4Hs6xXr6Oh4Zrk2dwYglNjxmzErdPnvu7gs/gekzrJ6KEQHYRc+5+4dKg6rRADQ681NLVx9vOggBs=
+  certpass:
+    secure: 0BgXJqxq9Ei34/hZ7121FQ==
+  keyfile: C:\users\appveyor\Certificates.p12
+
+branches:
+  only:
+    - master
+    - /^beta-.*$/
+    - /^stable-.*$/
+    - /^beta$/
+    - /^stable$/
+
 install:
   - git submodule update --init --recursive
   - ps: Start-FileDownload "https://static.rust-lang.org/dist/rust-1.9.0-x86_64-pc-windows-msvc.exe"
   - ps: Start-FileDownload "https://github.com/ethcore/win-build/raw/master/SimpleFC.dll" -FileName nsis\SimpleFC.dll
   - ps: Start-FileDownload "https://github.com/ethcore/win-build/raw/master/vc_redist.x64.exe" -FileName nsis\vc_redist.x64.exe
   - rust-1.9.0-x86_64-pc-windows-msvc.exe /VERYSILENT /NORESTART /DIR="C:\Program Files (x86)\Rust"
-  - SET PATH=%PATH%;C:\Program Files (x86)\Rust\bin;C:\Program Files (x86)\NSIS
+  - SET PATH=%PATH%;C:\Program Files (x86)\Rust\bin;C:\Program Files (x86)\NSIS;C:\Program Files (x86)\Microsoft SDKs\Windows\v7.1A\Bin
   - rustc -V
   - cargo -V
 
@@ -18,11 +32,18 @@ test_script:
 
 after_test:
   - cargo build --verbose --release
+  - ps: if($env:cert) { Start-FileDownload $env:cert -FileName $env:keyfile }
+  - ps: if($env:cert) { signtool sign /f $env:keyfile /p $env:certpass target\release\parity.exe }
   - makensis.exe nsis\installer.nsi
+  - ps: if($env:cert) { signtool sign /f $env:keyfile /p $env:certpass nsis\installer.exe }
 
 artifacts:
   - path: nsis\installer.exe
     name: Windows Installer (x86_64)
+  - path: target\release\parity.exe
+    name: Windows Executable (x86_64)
+  - path: target\release\parity.pdb
+    name: Windows Executable Debug Symbols (x86_64)
 
 cache:
   - target

dapps/Cargo.toml

@@ -20,13 +20,11 @@ serde_json = "0.7.0"
 serde_macros = { version = "0.7.0", optional = true }
 ethcore-rpc = { path = "../rpc" }
 ethcore-util = { path = "../util" }
-parity-dapps = { git = "https://github.com/ethcore/parity-dapps-rs.git", version = "0.3" }
+parity-dapps = { git = "https://github.com/ethcore/parity-ui.git", version = "0.6" }
 # List of apps
-parity-dapps-status = { git = "https://github.com/ethcore/parity-dapps-status-rs.git", version = "0.5.0" }
-parity-dapps-builtins = { git = "https://github.com/ethcore/parity-dapps-builtins-rs.git", version = "0.5.0" }
-parity-dapps-wallet = { git = "https://github.com/ethcore/parity-dapps-wallet-rs.git", version = "0.6.0", optional = true }
-parity-dapps-dao = { git = "https://github.com/ethcore/parity-dapps-dao-rs.git", version = "0.4.0", optional = true }
-parity-dapps-makerotc = { git = "https://github.com/ethcore/parity-dapps-makerotc-rs.git", version = "0.3.0", optional = true }
+parity-dapps-status = { git = "https://github.com/ethcore/parity-ui.git", version = "0.6" }
+parity-dapps-home = { git = "https://github.com/ethcore/parity-ui.git", version = "0.6" }
+parity-dapps-wallet = { git = "https://github.com/ethcore/parity-ui.git", version = "0.6", optional = true }
 mime_guess = { version = "1.6.1" }
 clippy = { version = "0.0.77", optional = true}
 
@@ -39,3 +37,9 @@ default = ["serde_codegen", "extra-dapps"]
 extra-dapps = ["parity-dapps-wallet"]
 nightly = ["serde_macros"]
 dev = ["clippy", "ethcore-rpc/dev", "ethcore-util/dev"]
+
+use-precompiled-js = [
+	"parity-dapps-status/use-precompiled-js",
+	"parity-dapps-home/use-precompiled-js",
+	"parity-dapps-wallet/use-precompiled-js"
+]

dapps/src/apps/mod.rs

@@ -22,7 +22,7 @@ use parity_dapps::WebApp;
 mod fs;
 
 extern crate parity_dapps_status;
-extern crate parity_dapps_builtins;
+extern crate parity_dapps_home;
 
 pub const DAPPS_DOMAIN : &'static str = ".parity";
 pub const RPC_PATH : &'static str =  "rpc";
@@ -34,7 +34,7 @@ pub fn main_page() -> &'static str {
 }
 
 pub fn utils() -> Box<Endpoint> {
-	Box::new(PageEndpoint::with_prefix(parity_dapps_builtins::App::default(), UTILS_PATH.to_owned()))
+	Box::new(PageEndpoint::with_prefix(parity_dapps_home::App::default(), UTILS_PATH.to_owned()))
 }
 
 pub fn all_endpoints(dapps_path: String) -> Endpoints {
@@ -44,7 +44,7 @@ pub fn all_endpoints(dapps_path: String) -> Endpoints {
 	// because we use Cross-Origin LocalStorage.
 	// TODO [ToDr] Account naming should be moved to parity.
 	pages.insert("home".into(), Box::new(
-		PageEndpoint::new_safe_to_embed(parity_dapps_builtins::App::default())
+		PageEndpoint::new_safe_to_embed(parity_dapps_home::App::default())
 	));
 	pages.insert("proxy".into(), ProxyPac::boxed());
 	insert::<parity_dapps_status::App>(&mut pages, "parity");
@@ -52,8 +52,6 @@ pub fn all_endpoints(dapps_path: String) -> Endpoints {
 
 	// Optional dapps
 	wallet_page(&mut pages);
-	daodapp_page(&mut pages);
-	makerotc_page(&mut pages);
 
 	pages
 }
@@ -66,22 +64,6 @@ fn wallet_page(pages: &mut Endpoints) {
 #[cfg(not(feature = "parity-dapps-wallet"))]
 fn wallet_page(_pages: &mut Endpoints) {}
 
-#[cfg(feature = "parity-dapps-dao")]
-fn daodapp_page(pages: &mut Endpoints) {
-	extern crate parity_dapps_dao;
-	insert::<parity_dapps_dao::App>(pages, "dao");
-}
-#[cfg(not(feature = "parity-dapps-dao"))]
-fn daodapp_page(_pages: &mut Endpoints) {}
-
-#[cfg(feature = "parity-dapps-makerotc")]
-fn makerotc_page(pages: &mut Endpoints) {
-	extern crate parity_dapps_makerotc;
-	insert::<parity_dapps_makerotc::App>(pages, "makerotc");
-}
-#[cfg(not(feature = "parity-dapps-makerotc"))]
-fn makerotc_page(_pages: &mut Endpoints) {}
-
 fn insert<T : WebApp + Default + 'static>(pages: &mut Endpoints, id: &str) {
 	pages.insert(id.to_owned(), Box::new(PageEndpoint::new(T::default())));
 }

dapps/src/endpoint.rs

@@ -42,11 +42,11 @@ pub struct EndpointInfo {
 pub trait Endpoint : Send + Sync {
 	fn info(&self) -> Option<&EndpointInfo> { None }
 
-	fn to_handler(&self, path: EndpointPath) -> Box<server::Handler<HttpStream>>;
+	fn to_handler(&self, path: EndpointPath) -> Box<server::Handler<HttpStream> + Send>;
 }
 
 pub type Endpoints = BTreeMap<String, Box<Endpoint>>;
-pub type Handler = server::Handler<HttpStream>;
+pub type Handler = server::Handler<HttpStream> + Send;
 
 pub struct ContentHandler {
 	content: String,
@@ -65,7 +65,7 @@ impl ContentHandler {
 }
 
 impl server::Handler<HttpStream> for ContentHandler {
-	fn on_request(&mut self, _request: server::Request) -> Next {
+	fn on_request(&mut self, _request: server::Request<HttpStream>) -> Next {
 		Next::write()
 	}
 

dapps/src/lib.rs

@@ -132,9 +132,16 @@ impl Server {
 				special.clone(),
 				authorization.clone(),
 			))
-			.map(|l| Server {
-				server: Some(l),
-				panic_handler: panic_handler,
+			.map(|(l, srv)| {
+
+				::std::thread::spawn(move || {
+					srv.run();
+				});
+
+				Server {
+					server: Some(l),
+					panic_handler: panic_handler,
+				}
 			})
 			.map_err(ServerError::from)
 	}

dapps/src/page/handler.rs

@@ -86,7 +86,7 @@ impl<T: Dapp> PageHandler<T> {
 }
 
 impl<T: Dapp> server::Handler<HttpStream> for PageHandler<T> {
-	fn on_request(&mut self, req: server::Request) -> Next {
+	fn on_request(&mut self, req: server::Request<HttpStream>) -> Next {
 		self.file = match *req.uri() {
 			RequestUri::AbsolutePath(ref path) => {
 				self.app.file(&self.extract_path(path))

dapps/src/router/auth.rs

@@ -27,13 +27,13 @@ pub enum Authorized {
 	/// Authorization was successful.
 	Yes,
 	/// Unsuccessful authorization. Handler for further work is returned.
-	No(Box<server::Handler<HttpStream>>),
+	No(Box<server::Handler<HttpStream> + Send>),
 }
 
 /// Authorization interface
 pub trait Authorization : Send + Sync {
 	/// Checks if authorization is valid.
-	fn is_authorized(&self, req: &server::Request)-> Authorized;
+	fn is_authorized(&self, req: &server::Request<HttpStream>)-> Authorized;
 }
 
 /// HTTP Basic Authorization handler
@@ -45,13 +45,13 @@ pub struct HttpBasicAuth {
 pub struct NoAuth;
 
 impl Authorization for NoAuth {
-	fn is_authorized(&self, _req: &server::Request)-> Authorized {
+	fn is_authorized(&self, _req: &server::Request<HttpStream>)-> Authorized {
 		Authorized::Yes
 	}
 }
 
 impl Authorization for HttpBasicAuth {
-	fn is_authorized(&self, req: &server::Request) -> Authorized {
+	fn is_authorized(&self, req: &server::Request<HttpStream>) -> Authorized {
 		let auth = self.check_auth(&req);
 
 		match auth {
@@ -89,7 +89,7 @@ impl HttpBasicAuth {
 		self.users.get(&username.to_owned()).map_or(false, |pass| pass == password)
 	}
 
-	fn check_auth(&self, req: &server::Request) -> Access {
+	fn check_auth(&self, req: &server::Request<HttpStream>) -> Access {
 		match req.headers().get::<header::Authorization<header::Basic>>() {
 			Some(&header::Authorization(
 				header::Basic { ref username, password: Some(ref password) }
@@ -105,7 +105,7 @@ pub struct UnauthorizedHandler {
 }
 
 impl server::Handler<HttpStream> for UnauthorizedHandler {
-	fn on_request(&mut self, _request: server::Request) -> Next {
+	fn on_request(&mut self, _request: server::Request<HttpStream>) -> Next {
 		Next::write()
 	}
 
@@ -141,7 +141,7 @@ impl server::Handler<HttpStream> for UnauthorizedHandler {
 pub struct AuthRequiredHandler;
 
 impl server::Handler<HttpStream> for AuthRequiredHandler {
-	fn on_request(&mut self, _request: server::Request) -> Next {
+	fn on_request(&mut self, _request: server::Request<HttpStream>) -> Next {
 		Next::write()
 	}
 

dapps/src/router/mod.rs

@@ -49,12 +49,12 @@ pub struct Router<A: Authorization + 'static> {
 	endpoints: Arc<Endpoints>,
 	special: Arc<HashMap<SpecialEndpoint, Box<Endpoint>>>,
 	authorization: Arc<A>,
-	handler: Box<server::Handler<HttpStream>>,
+	handler: Box<server::Handler<HttpStream> + Send>,
 }
 
 impl<A: Authorization + 'static> server::Handler<HttpStream> for Router<A> {
 
-	fn on_request(&mut self, req: server::Request) -> Next {
+	fn on_request(&mut self, req: server::Request<HttpStream>) -> Next {
 		// Check authorization
 		let auth = self.authorization.is_authorized(&req);
 
@@ -124,7 +124,7 @@ impl<A: Authorization> Router<A> {
 	}
 }
 
-fn extract_url(req: &server::Request) -> Option<Url> {
+fn extract_url(req: &server::Request<HttpStream>) -> Option<Url> {
 	match *req.uri() {
 		uri::RequestUri::AbsoluteUri(ref url) => {
 			match Url::from_generic_url(url.clone()) {

dapps/src/router/redirect.rs

@@ -33,7 +33,7 @@ impl Redirection {
 }
 
 impl server::Handler<HttpStream> for Redirection {
-	fn on_request(&mut self, _request: server::Request) -> Next {
+	fn on_request(&mut self, _request: server::Request<HttpStream>) -> Next {
 		Next::write()
 	}
 

db/src/database.rs

@@ -26,12 +26,6 @@ use std::mem;
 use ipc::binary::BinaryConvertError;
 use std::collections::{VecDeque, HashMap, BTreeMap};
 
-impl From<String> for Error {
-	fn from(s: String) -> Error {
-		Error::RocksDb(s)
-	}
-}
-
 enum WriteCacheEntry {
 	Remove,
 	Write(Vec<u8>),

db/src/traits.rs

@@ -31,8 +31,8 @@ pub struct KeyValue {
 	pub value: Vec<u8>,
 }
 
-	#[derive(Debug, Binary)]
-	pub enum Error {
+#[derive(Debug, Binary)]
+pub enum Error {
 	AlreadyOpen,
 	IsClosed,
 	RocksDb(String),
@@ -41,6 +41,12 @@ pub struct KeyValue {
 	UncommitedTransactions,
 }
 
+impl From<String> for Error {
+	fn from(s: String) -> Error {
+		Error::RocksDb(s)
+	}
+}
+
 /// Database configuration
 #[derive(Binary)]
 pub struct DatabaseConfig {
@@ -68,7 +74,7 @@ impl DatabaseConfig {
 	}
 }
 
-	pub trait DatabaseService : Sized {
+pub trait DatabaseService : Sized {
 	/// Opens database in the specified path
 	fn open(&self, config: DatabaseConfig, path: String) -> Result<(), Error>;
 

docker/centos/Dockerfile

@@ -2,24 +2,28 @@ FROM centos:latest
 WORKDIR /build
 # install tools and dependencies
 RUN yum -y update&& \
-    yum install -y git make gcc-c++ gcc file 
+    yum install -y git make gcc-c++ gcc file binutils
 # install rustup
 RUN curl -sSf https://static.rust-lang.org/rustup.sh -o rustup.sh &&\
 ls&&\ 
  sh rustup.sh -s -- --disable-sudo
 # show backtraces
 ENV RUST_BACKTRACE 1
+# set compiler
 ENV CXX g++
 ENV CC gcc
+# show tools
 RUN rustc -vV && \
 cargo -V && \
 gcc -v &&\
 g++ -v
-# git clone parity
+# build parity
 RUN git clone https://github.com/ethcore/parity && \
 	cd parity&&\
+	git checkout beta && \
+        git pull && \
         ls -a&&\
         cargo build --release --verbose && \
 	ls /build/parity/target/release/parity &&	\
-	file /build/parity/target/release/parity && \
+	strip /build/parity/target/release/parity
 RUN file /build/parity/target/release/parity

docker/ubuntu-aarch64/Dockerfile

@@ -0,0 +1,49 @@
+FROM ubuntu:14.04
+WORKDIR /build
+# install tools and dependencies
+RUN apt-get -y update && \
+        apt-get install -y --force-yes --no-install-recommends \
+        curl git make g++ gcc-aarch64-linux-gnu g++-aarch64-linux-gnu \
+        libc6-arm64-cross libc6-dev-arm64-cross wget file ca-certificates \
+        binutils-aarch64-linux-gnu \
+        && \
+    apt-get clean
+
+# install rustup
+RUN curl https://sh.rustup.rs -sSf | sh -s -- -y
+
+# rustup directory
+ENV PATH /root/.cargo/bin:$PATH
+
+ENV RUST_TARGETS="aarch64-unknown-linux-gnu"
+
+# multirust add arm--linux-gnuabhf toolchain
+RUN rustup target add aarch64-unknown-linux-gnu
+
+# show backtraces
+ENV RUST_BACKTRACE 1
+
+# set compilers
+ENV CXX aarch64-linux-gnu-g++
+ENV CC aarch64-linux-gnu-gcc
+
+# show tools
+ RUN rustc -vV && \
+ cargo -V && \
+ gcc -v &&\
+ g++ -v
+
+# build parity
+RUN git clone https://github.com/ethcore/parity && \
+        cd parity && \
+        git checkout beta && \
+        git pull && \
+        mkdir -p .cargo && \
+        echo '[target.aarch64-unknown-linux-gnu]\n\
+        linker = "aarch64-linux-gnu-gcc"\n'\
+        >>.cargo/config && \
+        cat .cargo/config && \
+        cargo build --target aarch64-unknown-linux-gnu --release --verbose && \
+        ls /build/parity/target/aarch64-unknown-linux-gnu/release/parity &&     \
+        /usr/bin/aarch64-linux-gnu-strip /build/parity/target/aarch64-unknown-linux-gnu/release/parity
+RUN file /build/parity/target/aarch64-unknown-linux-gnu/release/parity

docker/ubuntu-arm/Dockerfile

@@ -2,11 +2,11 @@ FROM ubuntu:14.04
 WORKDIR /build
 # install tools and dependencies
 RUN apt-get -y update && \
-	apt-get install -y --force-yes --no-install-recommends \
-	curl git make g++ gcc-arm-linux-gnueabihf g++-arm-linux-gnueabihf \
-	libc6-dev-armhf-cross wget file ca-certificates \
-	binutils-arm-linux-gnueabihf \
-	&& \
+        apt-get install -y --force-yes --no-install-recommends \
+        curl git make g++ gcc-arm-linux-gnueabihf g++-arm-linux-gnueabihf \
+        libc6-dev-armhf-cross wget file ca-certificates \
+        binutils-arm-linux-gnueabihf \
+        && \
     apt-get clean
 
 # install rustup
@@ -18,33 +18,32 @@ ENV PATH /root/.cargo/bin:$PATH
 ENV RUST_TARGETS="arm-unknown-linux-gnueabihf"
 
 # multirust add arm--linux-gnuabhf toolchain
-RUN rustup target add stable arm-unknown-linux-gnueabihf
+RUN rustup target add armv7-unknown-linux-gnueabihf
 
 # show backtraces
 ENV RUST_BACKTRACE 1
+
 # set compilers
 ENV CXX arm-linux-gnueabihf-g++
 ENV CC arm-linux-gnueabihf-gcc
+
+# show tools
+ RUN rustc -vV && \
+ cargo -V && \
+ gcc -v &&\
+ g++ -v
+
 # build parity
 RUN git clone https://github.com/ethcore/parity && \
-	cd parity && \
-	git checkout master && \
-	wget https://github.com/nix-rust/nix/archive/v0.5.0.tar.gz && \
-	tar -xf v0.5.0.tar.gz && \
-	rm -rf v0.5.0.tar.gz && \
-	wget https://github.com/thkaw/mio/archive/v0.5.x.tar.gz && \
-	tar -xf v0.5.x.tar.gz && \
-	rm -rf v0.5.x.tar.gz && \
-	mkdir -p .cargo && \
-  	echo 'paths = ["nix-0.5.0","mio-0.5.x"]\n\
-	[target.arm-unknown-linux-gnueabihf]\n\
-	linker = "arm-linux-gnueabihf-gcc"\n'\
-	>>.cargo/config && \
-	cat .cargo/config && \
-	rustc -vV && \
-	cargo -V && \
-	cargo build --target arm-unknown-linux-gnueabihf --release --verbose && \
-	ls /build/parity/target/arm-unknown-linux-gnueabihf/release/parity &&	\
-	file /build/parity/target/arm-unknown-linux-gnueabihf/release/parity && \
-	/usr/bin/arm-linux-gnueabihf-strip /build/parity/target/arm-unknown-linux-gnueabihf/release/parity
-RUN file /build/parity/target/arm-unknown-linux-gnueabihf/release/parity
+        cd parity && \
+        git checkout beta && \
+        git pull && \
+        mkdir -p .cargo && \
+        echo '[target.armv7-unknown-linux-gnueabihf]\n\
+        linker = "arm-linux-gnueabihf-gcc"\n'\
+        >>.cargo/config && \
+        cat .cargo/config && \
+        cargo build --target armv7-unknown-linux-gnueabihf --release --verbose && \
+        ls /build/parity/target/armv7-unknown-linux-gnueabihf/release/parity && \
+        /usr/bin/arm-linux-gnueabihf-strip /build/parity/target/armv7-unknown-linux-gnueabihf/release/parity
+RUN file /build/parity/target/armv7-unknown-linux-gnueabihf/release/parity

docker/ubuntu-jit/Dockerfile

@@ -1,31 +1,33 @@
 FROM ubuntu:14.04
-
+WORKDIR /build
 # install tools and dependencies
 RUN apt-get update && \
-	apt-get install -y \
-	# make
-	build-essential \
-	# add-apt-repository
-	software-properties-common \
-	curl \
-	wget \
-	git \
-	g++ \
-	# evmjit dependencies
-	zlib1g-dev \
-	libedit-dev
+        apt-get install -y \
+        # make
+        build-essential \
+        # add-apt-repository
+        software-properties-common \
+        curl \
+        wget \
+        git \
+        g++ \
+        binutils \
+        file \
+        # evmjit dependencies
+        zlib1g-dev \
+        libedit-dev
 
-# cmake, llvm and rocksdb ppas. then update ppas
+# cmake and llvm ppas. then update ppas
 RUN add-apt-repository -y "ppa:george-edison55/cmake-3.x" && \
-	add-apt-repository "deb http://llvm.org/apt/trusty/ llvm-toolchain-trusty-3.7 main" && \
-	apt-get update && \
-	apt-get install -y --force-yes cmake llvm-3.7-dev
+        add-apt-repository "deb http://llvm.org/apt/trusty/ llvm-toolchain-trusty-3.7 main" && \
+        apt-get update && \
+        apt-get install -y --force-yes cmake llvm-3.7-dev
 
 # install evmjit
 RUN git clone https://github.com/debris/evmjit && \
-	cd evmjit && \
-	mkdir build && cd build && \
-	cmake .. && make && make install && cd
+        cd evmjit && \
+        mkdir build && cd build && \
+        cmake .. && make && make install && cd
 
 # install rustup
 RUN curl https://sh.rustup.rs -sSf | sh -s -- -y
@@ -36,7 +38,18 @@ ENV PATH /root/.cargo/bin:$PATH
 # show backtraces
 ENV RUST_BACKTRACE 1
 
+# show tools
+RUN rustc -vV && \
+cargo -V && \
+gcc -v &&\
+g++ -v
+
 # build parity
 RUN git clone https://github.com/ethcore/parity && \
-	cd parity && \
-	cargo build --release --features ethcore/jit
+        cd parity && \
+        git checkout beta && \
+        git pull && \
+        cargo build --release --features ethcore/jit --verbose && \
+        ls /build/parity/target/release/parity &&       \
+        strip /build/parity/target/release/parity
+RUN file /build/parity/target/release/parity

docker/ubuntu/Dockerfile

@@ -1,12 +1,13 @@
 FROM ubuntu:14.04
-
+WORKDIR /build
 # install tools and dependencies
 RUN apt-get update && \
-	apt-get install -y \
-	g++ \
-	curl \
-	git \
-	make
+        apt-get install -y \
+        g++ \
+        curl \
+        git \
+        file \
+        binutils
 
 # install rustup
 RUN curl https://sh.rustup.rs -sSf | sh -s -- -y
@@ -17,7 +18,18 @@ ENV PATH /root/.cargo/bin:$PATH
 # show backtraces
 ENV RUST_BACKTRACE 1
 
+# show tools
+RUN rustc -vV && \
+cargo -V && \
+gcc -v &&\
+g++ -v
+
 # build parity
 RUN git clone https://github.com/ethcore/parity && \
-	cd parity && \
-	cargo build --release
+        cd parity && \
+        git checkout beta && \
+        git pull && \
+        cargo build --release --verbose && \
+        ls /build/parity/target/release/parity && \
+        strip /build/parity/target/release/parity
+RUN file /build/parity/target/release/parity

ethcore/Cargo.toml

@@ -32,6 +32,10 @@ bloomchain = "0.1"
 rayon = "0.3.1"
 ethstore = { path = "../ethstore" }
 
+[dependencies.hyper]
+git = "https://github.com/ethcore/hyper"
+default-features = false
+
 [features]
 jit = ["evmjit"]
 evm-debug = []

ethcore/res/ethereum/daohardfork_test.json

@@ -0,0 +1,162 @@
+{
+	"name": "DAO hard-fork consensus test",
+	"engine": {
+		"Ethash": {
+			"params": {
+				"gasLimitBoundDivisor": "0x0400",
+				"minimumDifficulty": "0x020000",
+				"difficultyBoundDivisor": "0x0800",
+				"durationLimit": "0x0d",
+				"blockReward": "0x4563918244F40000",
+				"registrar" : "0xc6d9d2cd449a754c494264e1809c50e34d64562b",
+				"frontierCompatibilityModeLimit": "0x5",
+				"daoHardforkTransition": "0x8",
+				"daoHardforkBeneficiary": "0xbf4ed7b27f1d666546e30d74d50d173d20bca754",
+				"daoHardforkAccounts": [  
+					"0xd4fe7bc31cedb7bfb8a345f31e668033056b2728",
+					"0xb3fb0e5aba0e20e5c49d252dfd30e102b171a425",
+					"0x2c19c7f9ae8b751e37aeb2d93a699722395ae18f",
+					"0xecd135fa4f61a655311e86238c92adcd779555d2",
+					"0x1975bd06d486162d5dc297798dfc41edd5d160a7",
+					"0xa3acf3a1e16b1d7c315e23510fdd7847b48234f6",
+					"0x319f70bab6845585f412ec7724b744fec6095c85",
+					"0x06706dd3f2c9abf0a21ddcc6941d9b86f0596936",
+					"0x5c8536898fbb74fc7445814902fd08422eac56d0",
+					"0x6966ab0d485353095148a2155858910e0965b6f9",
+					"0x779543a0491a837ca36ce8c635d6154e3c4911a6",
+					"0x2a5ed960395e2a49b1c758cef4aa15213cfd874c",
+					"0x5c6e67ccd5849c0d29219c4f95f1a7a93b3f5dc5",
+					"0x9c50426be05db97f5d64fc54bf89eff947f0a321",
+					"0x200450f06520bdd6c527622a273333384d870efb",
+					"0xbe8539bfe837b67d1282b2b1d61c3f723966f049",
+					"0x6b0c4d41ba9ab8d8cfb5d379c69a612f2ced8ecb",
+					"0xf1385fb24aad0cd7432824085e42aff90886fef5",
+					"0xd1ac8b1ef1b69ff51d1d401a476e7e612414f091",
+					"0x8163e7fb499e90f8544ea62bbf80d21cd26d9efd",
+					"0x51e0ddd9998364a2eb38588679f0d2c42653e4a6",
+					"0x627a0a960c079c21c34f7612d5d230e01b4ad4c7",
+					"0xf0b1aa0eb660754448a7937c022e30aa692fe0c5",
+					"0x24c4d950dfd4dd1902bbed3508144a54542bba94",
+					"0x9f27daea7aca0aa0446220b98d028715e3bc803d",
+					"0xa5dc5acd6a7968a4554d89d65e59b7fd3bff0f90",
+					"0xd9aef3a1e38a39c16b31d1ace71bca8ef58d315b",
+					"0x63ed5a272de2f6d968408b4acb9024f4cc208ebf",
+					"0x6f6704e5a10332af6672e50b3d9754dc460dfa4d",
+					"0x77ca7b50b6cd7e2f3fa008e24ab793fd56cb15f6",
+					"0x492ea3bb0f3315521c31f273e565b868fc090f17",
+					"0x0ff30d6de14a8224aa97b78aea5388d1c51c1f00",
+					"0x9ea779f907f0b315b364b0cfc39a0fde5b02a416",
+					"0xceaeb481747ca6c540a000c1f3641f8cef161fa7",
+					"0xcc34673c6c40e791051898567a1222daf90be287",
+					"0x579a80d909f346fbfb1189493f521d7f48d52238",
+					"0xe308bd1ac5fda103967359b2712dd89deffb7973",
+					"0x4cb31628079fb14e4bc3cd5e30c2f7489b00960c",
+					"0xac1ecab32727358dba8962a0f3b261731aad9723",
+					"0x4fd6ace747f06ece9c49699c7cabc62d02211f75",
+					"0x440c59b325d2997a134c2c7c60a8c61611212bad",
+					"0x4486a3d68fac6967006d7a517b889fd3f98c102b",
+					"0x9c15b54878ba618f494b38f0ae7443db6af648ba",
+					"0x27b137a85656544b1ccb5a0f2e561a5703c6a68f",
+					"0x21c7fdb9ed8d291d79ffd82eb2c4356ec0d81241",
+					"0x23b75c2f6791eef49c69684db4c6c1f93bf49a50",
+					"0x1ca6abd14d30affe533b24d7a21bff4c2d5e1f3b",
+					"0xb9637156d330c0d605a791f1c31ba5890582fe1c",
+					"0x6131c42fa982e56929107413a9d526fd99405560",
+					"0x1591fc0f688c81fbeb17f5426a162a7024d430c2",
+					"0x542a9515200d14b68e934e9830d91645a980dd7a",
+					"0xc4bbd073882dd2add2424cf47d35213405b01324",
+					"0x782495b7b3355efb2833d56ecb34dc22ad7dfcc4",
+					"0x58b95c9a9d5d26825e70a82b6adb139d3fd829eb",
+					"0x3ba4d81db016dc2890c81f3acec2454bff5aada5",
+					"0xb52042c8ca3f8aa246fa79c3feaa3d959347c0ab",
+					"0xe4ae1efdfc53b73893af49113d8694a057b9c0d1",
+					"0x3c02a7bc0391e86d91b7d144e61c2c01a25a79c5",
+					"0x0737a6b837f97f46ebade41b9bc3e1c509c85c53",
+					"0x97f43a37f595ab5dd318fb46e7a155eae057317a",
+					"0x52c5317c848ba20c7504cb2c8052abd1fde29d03",
+					"0x4863226780fe7c0356454236d3b1c8792785748d",
+					"0x5d2b2e6fcbe3b11d26b525e085ff818dae332479",
+					"0x5f9f3392e9f62f63b8eac0beb55541fc8627f42c",
+					"0x057b56736d32b86616a10f619859c6cd6f59092a",
+					"0x9aa008f65de0b923a2a4f02012ad034a5e2e2192",
+					"0x304a554a310c7e546dfe434669c62820b7d83490",
+					"0x914d1b8b43e92723e64fd0a06f5bdb8dd9b10c79",
+					"0x4deb0033bb26bc534b197e61d19e0733e5679784",
+					"0x07f5c1e1bc2c93e0402f23341973a0e043f7bf8a",
+					"0x35a051a0010aba705c9008d7a7eff6fb88f6ea7b",
+					"0x4fa802324e929786dbda3b8820dc7834e9134a2a",
+					"0x9da397b9e80755301a3b32173283a91c0ef6c87e",
+					"0x8d9edb3054ce5c5774a420ac37ebae0ac02343c6",
+					"0x0101f3be8ebb4bbd39a2e3b9a3639d4259832fd9",
+					"0x5dc28b15dffed94048d73806ce4b7a4612a1d48f",
+					"0xbcf899e6c7d9d5a215ab1e3444c86806fa854c76",
+					"0x12e626b0eebfe86a56d633b9864e389b45dcb260",
+					"0xa2f1ccba9395d7fcb155bba8bc92db9bafaeade7",
+					"0xec8e57756626fdc07c63ad2eafbd28d08e7b0ca5",
+					"0xd164b088bd9108b60d0ca3751da4bceb207b0782",
+					"0x6231b6d0d5e77fe001c2a460bd9584fee60d409b",
+					"0x1cba23d343a983e9b5cfd19496b9a9701ada385f",
+					"0xa82f360a8d3455c5c41366975bde739c37bfeb8a",
+					"0x9fcd2deaff372a39cc679d5c5e4de7bafb0b1339",
+					"0x005f5cee7a43331d5a3d3eec71305925a62f34b6",
+					"0x0e0da70933f4c7849fc0d203f5d1d43b9ae4532d",
+					"0xd131637d5275fd1a68a3200f4ad25c71a2a9522e",
+					"0xbc07118b9ac290e4622f5e77a0853539789effbe",
+					"0x47e7aa56d6bdf3f36be34619660de61275420af8",
+					"0xacd87e28b0c9d1254e868b81cba4cc20d9a32225",
+					"0xadf80daec7ba8dcf15392f1ac611fff65d94f880",
+					"0x5524c55fb03cf21f549444ccbecb664d0acad706",
+					"0x40b803a9abce16f50f36a77ba41180eb90023925",
+					"0xfe24cdd8648121a43a7c86d289be4dd2951ed49f",
+					"0x17802f43a0137c506ba92291391a8a8f207f487d",
+					"0x253488078a4edf4d6f42f113d1e62836a942cf1a",
+					"0x86af3e9626fce1957c82e88cbf04ddf3a2ed7915",
+					"0xb136707642a4ea12fb4bae820f03d2562ebff487",
+					"0xdbe9b615a3ae8709af8b93336ce9b477e4ac0940",
+					"0xf14c14075d6c4ed84b86798af0956deef67365b5",
+					"0xca544e5c4687d109611d0f8f928b53a25af72448",
+					"0xaeeb8ff27288bdabc0fa5ebb731b6f409507516c",
+					"0xcbb9d3703e651b0d496cdefb8b92c25aeb2171f7",
+					"0x6d87578288b6cb5549d5076a207456a1f6a63dc0",
+					"0xb2c6f0dfbb716ac562e2d85d6cb2f8d5ee87603e",
+					"0xaccc230e8a6e5be9160b8cdf2864dd2a001c28b6",
+					"0x2b3455ec7fedf16e646268bf88846bd7a2319bb2",
+					"0x4613f3bca5c44ea06337a9e439fbc6d42e501d0a",
+					"0xd343b217de44030afaa275f54d31a9317c7f441e",
+					"0x84ef4b2357079cd7a7c69fd7a37cd0609a679106",
+					"0xda2fef9e4a3230988ff17df2165440f37e8b1708",
+					"0xf4c64518ea10f995918a454158c6b61407ea345c",
+					"0x7602b46df5390e432ef1c307d4f2c9ff6d65cc97",
+					"0xbb9bc244d798123fde783fcc1c72d3bb8c189413",
+					"0x807640a13483f8ac783c557fcdf27be11ea4ac7a"
+				]
+			}
+		}
+	},
+	"params": {
+		"accountStartNonce": "0x00",
+		"maximumExtraDataSize": "0x20",
+		"minGasLimit": "0x1388",
+		"networkID" : "0x1"
+	},
+	"genesis": {
+		"seal": {
+			"ethereum": {
+				"nonce": "0x0000000000000042",
+				"mixHash": "0x0000000000000000000000000000000000000000000000000000000000000000"
+			}
+		},
+		"difficulty": "0x400000000",
+		"author": "0x0000000000000000000000000000000000000000",
+		"timestamp": "0x00",
+		"parentHash": "0x0000000000000000000000000000000000000000000000000000000000000000",
+		"extraData": "0x11bbe8db4e347b4e8c937c1c8370e4b5ed33adb3db69cbdb7a38e1e50b1b82fa",
+		"gasLimit": "0x1388"
+	},
+	"accounts": {
+		"0000000000000000000000000000000000000001": { "builtin": { "name": "ecrecover", "pricing": { "linear": { "base": 3000, "word": 0 } } } },
+		"0000000000000000000000000000000000000002": { "builtin": { "name": "sha256", "pricing": { "linear": { "base": 60, "word": 12 } } } },
+		"0000000000000000000000000000000000000003": { "builtin": { "name": "ripemd160", "pricing": { "linear": { "base": 600, "word": 120 } } } },
+		"0000000000000000000000000000000000000004": { "builtin": { "name": "identity", "pricing": { "linear": { "base": 15, "word": 3 } } } }
+	}
+}

ethcore/res/ethereum/frontier-dogmatic.json

@@ -9,8 +9,7 @@
 				"durationLimit": "0x0d",
 				"blockReward": "0x4563918244F40000",
 				"registrar" : "0xc6d9d2cd449a754c494264e1809c50e34d64562b",
-				"frontierCompatibilityModeLimit": "0x118c30",
-				"daoRescueSoftFork": true
+				"frontierCompatibilityModeLimit": "0x118c30"
 			}
 		}
 	},
@@ -18,7 +17,9 @@
 		"accountStartNonce": "0x00",
 		"maximumExtraDataSize": "0x20",
 		"minGasLimit": "0x1388",
-		"networkID" : "0x1"
+		"networkID" : "0x1",
+		"forkBlock": "0x1d4c00",
+		"forkCanonHash": "0x94365e3a8c0b35089c1d1195081fe7489b528a84b22199c916180db8b28ade7f"
 	},
 	"genesis": {
 		"seal": {

ethcore/res/ethereum/frontier.json

@@ -10,7 +10,126 @@
 				"blockReward": "0x4563918244F40000",
 				"registrar" : "0xc6d9d2cd449a754c494264e1809c50e34d64562b",
 				"frontierCompatibilityModeLimit": "0x118c30",
-				"daoRescueSoftFork": false
+				"daoHardforkTransition": "0x1d4c00",
+				"daoHardforkBeneficiary": "0xbf4ed7b27f1d666546e30d74d50d173d20bca754",
+				"daoHardforkAccounts": [  
+					"0xd4fe7bc31cedb7bfb8a345f31e668033056b2728",
+					"0xb3fb0e5aba0e20e5c49d252dfd30e102b171a425",
+					"0x2c19c7f9ae8b751e37aeb2d93a699722395ae18f",
+					"0xecd135fa4f61a655311e86238c92adcd779555d2",
+					"0x1975bd06d486162d5dc297798dfc41edd5d160a7",
+					"0xa3acf3a1e16b1d7c315e23510fdd7847b48234f6",
+					"0x319f70bab6845585f412ec7724b744fec6095c85",
+					"0x06706dd3f2c9abf0a21ddcc6941d9b86f0596936",
+					"0x5c8536898fbb74fc7445814902fd08422eac56d0",
+					"0x6966ab0d485353095148a2155858910e0965b6f9",
+					"0x779543a0491a837ca36ce8c635d6154e3c4911a6",
+					"0x2a5ed960395e2a49b1c758cef4aa15213cfd874c",
+					"0x5c6e67ccd5849c0d29219c4f95f1a7a93b3f5dc5",
+					"0x9c50426be05db97f5d64fc54bf89eff947f0a321",
+					"0x200450f06520bdd6c527622a273333384d870efb",
+					"0xbe8539bfe837b67d1282b2b1d61c3f723966f049",
+					"0x6b0c4d41ba9ab8d8cfb5d379c69a612f2ced8ecb",
+					"0xf1385fb24aad0cd7432824085e42aff90886fef5",
+					"0xd1ac8b1ef1b69ff51d1d401a476e7e612414f091",
+					"0x8163e7fb499e90f8544ea62bbf80d21cd26d9efd",
+					"0x51e0ddd9998364a2eb38588679f0d2c42653e4a6",
+					"0x627a0a960c079c21c34f7612d5d230e01b4ad4c7",
+					"0xf0b1aa0eb660754448a7937c022e30aa692fe0c5",
+					"0x24c4d950dfd4dd1902bbed3508144a54542bba94",
+					"0x9f27daea7aca0aa0446220b98d028715e3bc803d",
+					"0xa5dc5acd6a7968a4554d89d65e59b7fd3bff0f90",
+					"0xd9aef3a1e38a39c16b31d1ace71bca8ef58d315b",
+					"0x63ed5a272de2f6d968408b4acb9024f4cc208ebf",
+					"0x6f6704e5a10332af6672e50b3d9754dc460dfa4d",
+					"0x77ca7b50b6cd7e2f3fa008e24ab793fd56cb15f6",
+					"0x492ea3bb0f3315521c31f273e565b868fc090f17",
+					"0x0ff30d6de14a8224aa97b78aea5388d1c51c1f00",
+					"0x9ea779f907f0b315b364b0cfc39a0fde5b02a416",
+					"0xceaeb481747ca6c540a000c1f3641f8cef161fa7",
+					"0xcc34673c6c40e791051898567a1222daf90be287",
+					"0x579a80d909f346fbfb1189493f521d7f48d52238",
+					"0xe308bd1ac5fda103967359b2712dd89deffb7973",
+					"0x4cb31628079fb14e4bc3cd5e30c2f7489b00960c",
+					"0xac1ecab32727358dba8962a0f3b261731aad9723",
+					"0x4fd6ace747f06ece9c49699c7cabc62d02211f75",
+					"0x440c59b325d2997a134c2c7c60a8c61611212bad",
+					"0x4486a3d68fac6967006d7a517b889fd3f98c102b",
+					"0x9c15b54878ba618f494b38f0ae7443db6af648ba",
+					"0x27b137a85656544b1ccb5a0f2e561a5703c6a68f",
+					"0x21c7fdb9ed8d291d79ffd82eb2c4356ec0d81241",
+					"0x23b75c2f6791eef49c69684db4c6c1f93bf49a50",
+					"0x1ca6abd14d30affe533b24d7a21bff4c2d5e1f3b",
+					"0xb9637156d330c0d605a791f1c31ba5890582fe1c",
+					"0x6131c42fa982e56929107413a9d526fd99405560",
+					"0x1591fc0f688c81fbeb17f5426a162a7024d430c2",
+					"0x542a9515200d14b68e934e9830d91645a980dd7a",
+					"0xc4bbd073882dd2add2424cf47d35213405b01324",
+					"0x782495b7b3355efb2833d56ecb34dc22ad7dfcc4",
+					"0x58b95c9a9d5d26825e70a82b6adb139d3fd829eb",
+					"0x3ba4d81db016dc2890c81f3acec2454bff5aada5",
+					"0xb52042c8ca3f8aa246fa79c3feaa3d959347c0ab",
+					"0xe4ae1efdfc53b73893af49113d8694a057b9c0d1",
+					"0x3c02a7bc0391e86d91b7d144e61c2c01a25a79c5",
+					"0x0737a6b837f97f46ebade41b9bc3e1c509c85c53",
+					"0x97f43a37f595ab5dd318fb46e7a155eae057317a",
+					"0x52c5317c848ba20c7504cb2c8052abd1fde29d03",
+					"0x4863226780fe7c0356454236d3b1c8792785748d",
+					"0x5d2b2e6fcbe3b11d26b525e085ff818dae332479",
+					"0x5f9f3392e9f62f63b8eac0beb55541fc8627f42c",
+					"0x057b56736d32b86616a10f619859c6cd6f59092a",
+					"0x9aa008f65de0b923a2a4f02012ad034a5e2e2192",
+					"0x304a554a310c7e546dfe434669c62820b7d83490",
+					"0x914d1b8b43e92723e64fd0a06f5bdb8dd9b10c79",
+					"0x4deb0033bb26bc534b197e61d19e0733e5679784",
+					"0x07f5c1e1bc2c93e0402f23341973a0e043f7bf8a",
+					"0x35a051a0010aba705c9008d7a7eff6fb88f6ea7b",
+					"0x4fa802324e929786dbda3b8820dc7834e9134a2a",
+					"0x9da397b9e80755301a3b32173283a91c0ef6c87e",
+					"0x8d9edb3054ce5c5774a420ac37ebae0ac02343c6",
+					"0x0101f3be8ebb4bbd39a2e3b9a3639d4259832fd9",
+					"0x5dc28b15dffed94048d73806ce4b7a4612a1d48f",
+					"0xbcf899e6c7d9d5a215ab1e3444c86806fa854c76",
+					"0x12e626b0eebfe86a56d633b9864e389b45dcb260",
+					"0xa2f1ccba9395d7fcb155bba8bc92db9bafaeade7",
+					"0xec8e57756626fdc07c63ad2eafbd28d08e7b0ca5",
+					"0xd164b088bd9108b60d0ca3751da4bceb207b0782",
+					"0x6231b6d0d5e77fe001c2a460bd9584fee60d409b",
+					"0x1cba23d343a983e9b5cfd19496b9a9701ada385f",
+					"0xa82f360a8d3455c5c41366975bde739c37bfeb8a",
+					"0x9fcd2deaff372a39cc679d5c5e4de7bafb0b1339",
+					"0x005f5cee7a43331d5a3d3eec71305925a62f34b6",
+					"0x0e0da70933f4c7849fc0d203f5d1d43b9ae4532d",
+					"0xd131637d5275fd1a68a3200f4ad25c71a2a9522e",
+					"0xbc07118b9ac290e4622f5e77a0853539789effbe",
+					"0x47e7aa56d6bdf3f36be34619660de61275420af8",
+					"0xacd87e28b0c9d1254e868b81cba4cc20d9a32225",
+					"0xadf80daec7ba8dcf15392f1ac611fff65d94f880",
+					"0x5524c55fb03cf21f549444ccbecb664d0acad706",
+					"0x40b803a9abce16f50f36a77ba41180eb90023925",
+					"0xfe24cdd8648121a43a7c86d289be4dd2951ed49f",
+					"0x17802f43a0137c506ba92291391a8a8f207f487d",
+					"0x253488078a4edf4d6f42f113d1e62836a942cf1a",
+					"0x86af3e9626fce1957c82e88cbf04ddf3a2ed7915",
+					"0xb136707642a4ea12fb4bae820f03d2562ebff487",
+					"0xdbe9b615a3ae8709af8b93336ce9b477e4ac0940",
+					"0xf14c14075d6c4ed84b86798af0956deef67365b5",
+					"0xca544e5c4687d109611d0f8f928b53a25af72448",
+					"0xaeeb8ff27288bdabc0fa5ebb731b6f409507516c",
+					"0xcbb9d3703e651b0d496cdefb8b92c25aeb2171f7",
+					"0x6d87578288b6cb5549d5076a207456a1f6a63dc0",
+					"0xb2c6f0dfbb716ac562e2d85d6cb2f8d5ee87603e",
+					"0xaccc230e8a6e5be9160b8cdf2864dd2a001c28b6",
+					"0x2b3455ec7fedf16e646268bf88846bd7a2319bb2",
+					"0x4613f3bca5c44ea06337a9e439fbc6d42e501d0a",
+					"0xd343b217de44030afaa275f54d31a9317c7f441e",
+					"0x84ef4b2357079cd7a7c69fd7a37cd0609a679106",
+					"0xda2fef9e4a3230988ff17df2165440f37e8b1708",
+					"0xf4c64518ea10f995918a454158c6b61407ea345c",
+					"0x7602b46df5390e432ef1c307d4f2c9ff6d65cc97",
+					"0xbb9bc244d798123fde783fcc1c72d3bb8c189413",
+					"0x807640a13483f8ac783c557fcdf27be11ea4ac7a"
+				]
 			}
 		}
 	},
@@ -18,7 +137,9 @@
 		"accountStartNonce": "0x00",
 		"maximumExtraDataSize": "0x20",
 		"minGasLimit": "0x1388",
-		"networkID" : "0x1"
+		"networkID" : "0x1",
+		"forkBlock": "0x1d4c00",
+		"forkCanonHash": "0x4985f5ca3d2afbec36529aa96f74de3cc10a2a4a6c44f2157a57d2c6059a11bb"
 	},
 	"genesis": {
 		"seal": {

ethcore/res/ethereum/frontier_like_test.json

@@ -10,7 +10,126 @@
 				"blockReward": "0x4563918244F40000",
 				"registrar" : "0xc6d9d2cd449a754c494264e1809c50e34d64562b",
 				"frontierCompatibilityModeLimit": "0x118c30",
-				"daoRescueSoftFork": false
+				"daoHardforkTransition": "0x1d4c00",
+				"daoHardforkBeneficiary": "0xbf4ed7b27f1d666546e30d74d50d173d20bca754",
+				"daoHardforkAccounts": [  
+					"0xd4fe7bc31cedb7bfb8a345f31e668033056b2728",
+					"0xb3fb0e5aba0e20e5c49d252dfd30e102b171a425",
+					"0x2c19c7f9ae8b751e37aeb2d93a699722395ae18f",
+					"0xecd135fa4f61a655311e86238c92adcd779555d2",
+					"0x1975bd06d486162d5dc297798dfc41edd5d160a7",
+					"0xa3acf3a1e16b1d7c315e23510fdd7847b48234f6",
+					"0x319f70bab6845585f412ec7724b744fec6095c85",
+					"0x06706dd3f2c9abf0a21ddcc6941d9b86f0596936",
+					"0x5c8536898fbb74fc7445814902fd08422eac56d0",
+					"0x6966ab0d485353095148a2155858910e0965b6f9",
+					"0x779543a0491a837ca36ce8c635d6154e3c4911a6",
+					"0x2a5ed960395e2a49b1c758cef4aa15213cfd874c",
+					"0x5c6e67ccd5849c0d29219c4f95f1a7a93b3f5dc5",
+					"0x9c50426be05db97f5d64fc54bf89eff947f0a321",
+					"0x200450f06520bdd6c527622a273333384d870efb",
+					"0xbe8539bfe837b67d1282b2b1d61c3f723966f049",
+					"0x6b0c4d41ba9ab8d8cfb5d379c69a612f2ced8ecb",
+					"0xf1385fb24aad0cd7432824085e42aff90886fef5",
+					"0xd1ac8b1ef1b69ff51d1d401a476e7e612414f091",
+					"0x8163e7fb499e90f8544ea62bbf80d21cd26d9efd",
+					"0x51e0ddd9998364a2eb38588679f0d2c42653e4a6",
+					"0x627a0a960c079c21c34f7612d5d230e01b4ad4c7",
+					"0xf0b1aa0eb660754448a7937c022e30aa692fe0c5",
+					"0x24c4d950dfd4dd1902bbed3508144a54542bba94",
+					"0x9f27daea7aca0aa0446220b98d028715e3bc803d",
+					"0xa5dc5acd6a7968a4554d89d65e59b7fd3bff0f90",
+					"0xd9aef3a1e38a39c16b31d1ace71bca8ef58d315b",
+					"0x63ed5a272de2f6d968408b4acb9024f4cc208ebf",
+					"0x6f6704e5a10332af6672e50b3d9754dc460dfa4d",
+					"0x77ca7b50b6cd7e2f3fa008e24ab793fd56cb15f6",
+					"0x492ea3bb0f3315521c31f273e565b868fc090f17",
+					"0x0ff30d6de14a8224aa97b78aea5388d1c51c1f00",
+					"0x9ea779f907f0b315b364b0cfc39a0fde5b02a416",
+					"0xceaeb481747ca6c540a000c1f3641f8cef161fa7",
+					"0xcc34673c6c40e791051898567a1222daf90be287",
+					"0x579a80d909f346fbfb1189493f521d7f48d52238",
+					"0xe308bd1ac5fda103967359b2712dd89deffb7973",
+					"0x4cb31628079fb14e4bc3cd5e30c2f7489b00960c",
+					"0xac1ecab32727358dba8962a0f3b261731aad9723",
+					"0x4fd6ace747f06ece9c49699c7cabc62d02211f75",
+					"0x440c59b325d2997a134c2c7c60a8c61611212bad",
+					"0x4486a3d68fac6967006d7a517b889fd3f98c102b",
+					"0x9c15b54878ba618f494b38f0ae7443db6af648ba",
+					"0x27b137a85656544b1ccb5a0f2e561a5703c6a68f",
+					"0x21c7fdb9ed8d291d79ffd82eb2c4356ec0d81241",
+					"0x23b75c2f6791eef49c69684db4c6c1f93bf49a50",
+					"0x1ca6abd14d30affe533b24d7a21bff4c2d5e1f3b",
+					"0xb9637156d330c0d605a791f1c31ba5890582fe1c",
+					"0x6131c42fa982e56929107413a9d526fd99405560",
+					"0x1591fc0f688c81fbeb17f5426a162a7024d430c2",
+					"0x542a9515200d14b68e934e9830d91645a980dd7a",
+					"0xc4bbd073882dd2add2424cf47d35213405b01324",
+					"0x782495b7b3355efb2833d56ecb34dc22ad7dfcc4",
+					"0x58b95c9a9d5d26825e70a82b6adb139d3fd829eb",
+					"0x3ba4d81db016dc2890c81f3acec2454bff5aada5",
+					"0xb52042c8ca3f8aa246fa79c3feaa3d959347c0ab",
+					"0xe4ae1efdfc53b73893af49113d8694a057b9c0d1",
+					"0x3c02a7bc0391e86d91b7d144e61c2c01a25a79c5",
+					"0x0737a6b837f97f46ebade41b9bc3e1c509c85c53",
+					"0x97f43a37f595ab5dd318fb46e7a155eae057317a",
+					"0x52c5317c848ba20c7504cb2c8052abd1fde29d03",
+					"0x4863226780fe7c0356454236d3b1c8792785748d",
+					"0x5d2b2e6fcbe3b11d26b525e085ff818dae332479",
+					"0x5f9f3392e9f62f63b8eac0beb55541fc8627f42c",
+					"0x057b56736d32b86616a10f619859c6cd6f59092a",
+					"0x9aa008f65de0b923a2a4f02012ad034a5e2e2192",
+					"0x304a554a310c7e546dfe434669c62820b7d83490",
+					"0x914d1b8b43e92723e64fd0a06f5bdb8dd9b10c79",
+					"0x4deb0033bb26bc534b197e61d19e0733e5679784",
+					"0x07f5c1e1bc2c93e0402f23341973a0e043f7bf8a",
+					"0x35a051a0010aba705c9008d7a7eff6fb88f6ea7b",
+					"0x4fa802324e929786dbda3b8820dc7834e9134a2a",
+					"0x9da397b9e80755301a3b32173283a91c0ef6c87e",
+					"0x8d9edb3054ce5c5774a420ac37ebae0ac02343c6",
+					"0x0101f3be8ebb4bbd39a2e3b9a3639d4259832fd9",
+					"0x5dc28b15dffed94048d73806ce4b7a4612a1d48f",
+					"0xbcf899e6c7d9d5a215ab1e3444c86806fa854c76",
+					"0x12e626b0eebfe86a56d633b9864e389b45dcb260",
+					"0xa2f1ccba9395d7fcb155bba8bc92db9bafaeade7",
+					"0xec8e57756626fdc07c63ad2eafbd28d08e7b0ca5",
+					"0xd164b088bd9108b60d0ca3751da4bceb207b0782",
+					"0x6231b6d0d5e77fe001c2a460bd9584fee60d409b",
+					"0x1cba23d343a983e9b5cfd19496b9a9701ada385f",
+					"0xa82f360a8d3455c5c41366975bde739c37bfeb8a",
+					"0x9fcd2deaff372a39cc679d5c5e4de7bafb0b1339",
+					"0x005f5cee7a43331d5a3d3eec71305925a62f34b6",
+					"0x0e0da70933f4c7849fc0d203f5d1d43b9ae4532d",
+					"0xd131637d5275fd1a68a3200f4ad25c71a2a9522e",
+					"0xbc07118b9ac290e4622f5e77a0853539789effbe",
+					"0x47e7aa56d6bdf3f36be34619660de61275420af8",
+					"0xacd87e28b0c9d1254e868b81cba4cc20d9a32225",
+					"0xadf80daec7ba8dcf15392f1ac611fff65d94f880",
+					"0x5524c55fb03cf21f549444ccbecb664d0acad706",
+					"0x40b803a9abce16f50f36a77ba41180eb90023925",
+					"0xfe24cdd8648121a43a7c86d289be4dd2951ed49f",
+					"0x17802f43a0137c506ba92291391a8a8f207f487d",
+					"0x253488078a4edf4d6f42f113d1e62836a942cf1a",
+					"0x86af3e9626fce1957c82e88cbf04ddf3a2ed7915",
+					"0xb136707642a4ea12fb4bae820f03d2562ebff487",
+					"0xdbe9b615a3ae8709af8b93336ce9b477e4ac0940",
+					"0xf14c14075d6c4ed84b86798af0956deef67365b5",
+					"0xca544e5c4687d109611d0f8f928b53a25af72448",
+					"0xaeeb8ff27288bdabc0fa5ebb731b6f409507516c",
+					"0xcbb9d3703e651b0d496cdefb8b92c25aeb2171f7",
+					"0x6d87578288b6cb5549d5076a207456a1f6a63dc0",
+					"0xb2c6f0dfbb716ac562e2d85d6cb2f8d5ee87603e",
+					"0xaccc230e8a6e5be9160b8cdf2864dd2a001c28b6",
+					"0x2b3455ec7fedf16e646268bf88846bd7a2319bb2",
+					"0x4613f3bca5c44ea06337a9e439fbc6d42e501d0a",
+					"0xd343b217de44030afaa275f54d31a9317c7f441e",
+					"0x84ef4b2357079cd7a7c69fd7a37cd0609a679106",
+					"0xda2fef9e4a3230988ff17df2165440f37e8b1708",
+					"0xf4c64518ea10f995918a454158c6b61407ea345c",
+					"0x7602b46df5390e432ef1c307d4f2c9ff6d65cc97",
+					"0xbb9bc244d798123fde783fcc1c72d3bb8c189413",
+					"0x807640a13483f8ac783c557fcdf27be11ea4ac7a"
+				]
 			}
 		}
 	},

ethcore/res/ethereum/frontier_like_test_dao_rescue.json

@@ -1,43 +0,0 @@
-{
-	"name": "Frontier (Test)",
-	"engine": {
-		"Ethash": {
-			"params": {
-				"gasLimitBoundDivisor": "0x0400",
-				"minimumDifficulty": "0x020000",
-				"difficultyBoundDivisor": "0x0800",
-				"durationLimit": "0x0d",
-				"blockReward": "0x4563918244F40000",
-				"registrar" : "0xc6d9d2cd449a754c494264e1809c50e34d64562b",
-				"frontierCompatibilityModeLimit": "0x118c30",
-				"daoRescueSoftFork": true
-			}
-		}
-	},
-	"params": {
-		"accountStartNonce": "0x00",
-		"maximumExtraDataSize": "0x20",
-		"minGasLimit": "0x1388",
-		"networkID" : "0x1"
-	},
-	"genesis": {
-		"seal": {
-			"ethereum": {
-				"nonce": "0x0000000000000042",
-				"mixHash": "0x0000000000000000000000000000000000000000000000000000000000000000"
-			}
-		},
-		"difficulty": "0x400000000",
-		"author": "0x0000000000000000000000000000000000000000",
-		"timestamp": "0x00",
-		"parentHash": "0x0000000000000000000000000000000000000000000000000000000000000000",
-		"extraData": "0x11bbe8db4e347b4e8c937c1c8370e4b5ed33adb3db69cbdb7a38e1e50b1b82fa",
-		"gasLimit": "0x1388"
-	},
-	"accounts": {
-		"0000000000000000000000000000000000000001": { "builtin": { "name": "ecrecover", "pricing": { "linear": { "base": 3000, "word": 0 } } } },
-		"0000000000000000000000000000000000000002": { "builtin": { "name": "sha256", "pricing": { "linear": { "base": 60, "word": 12 } } } },
-		"0000000000000000000000000000000000000003": { "builtin": { "name": "ripemd160", "pricing": { "linear": { "base": 600, "word": 120 } } } },
-		"0000000000000000000000000000000000000004": { "builtin": { "name": "identity", "pricing": { "linear": { "base": 15, "word": 3 } } } }
-	}
-}

ethcore/res/ethereum/frontier_test.json

@@ -9,8 +9,7 @@
 				"durationLimit": "0x0d",
 				"blockReward": "0x4563918244F40000",
 				"registrar" : "0xc6d9d2cd449a754c494264e1809c50e34d64562b",
-				"frontierCompatibilityModeLimit": "0xffffffffffffffff",
-				"daoRescueSoftFork": false
+				"frontierCompatibilityModeLimit": "0xffffffffffffffff"
 			}
 		}
 	},

ethcore/res/ethereum/homestead_test.json

@@ -9,8 +9,7 @@
 				"durationLimit": "0x0d",
 				"blockReward": "0x4563918244F40000",
 				"registrar" : "0xc6d9d2cd449a754c494264e1809c50e34d64562b",
-				"frontierCompatibilityModeLimit": 0,
-				"daoRescueSoftFork": false
+				"frontierCompatibilityModeLimit": "0x0"
 			}
 		}
 	},

ethcore/res/ethereum/homestead_test_dao_rescue.json

@@ -1,43 +0,0 @@
-{
-	"name": "Homestead (Test)",
-	"engine": {
-		"Ethash": {
-			"params": {
-				"gasLimitBoundDivisor": "0x0400",
-				"minimumDifficulty": "0x020000",
-				"difficultyBoundDivisor": "0x0800",
-				"durationLimit": "0x0d",
-				"blockReward": "0x4563918244F40000",
-				"registrar" : "0xc6d9d2cd449a754c494264e1809c50e34d64562b",
-				"frontierCompatibilityModeLimit": 0,
-				"daoRescueSoftFork": true
-			}
-		}
-	},
-	"params": {
-		"accountStartNonce": "0x00",
-		"maximumExtraDataSize": "0x20",
-		"minGasLimit": "0x1388",
-		"networkID" : "0x1"
-	},
-	"genesis": {
-		"seal": {
-			"ethereum": {
-				"nonce": "0x0000000000000042",
-				"mixHash": "0x0000000000000000000000000000000000000000000000000000000000000000"
-			}
-		},
-		"difficulty": "0x400000000",
-		"author": "0x0000000000000000000000000000000000000000",
-		"timestamp": "0x00",
-		"parentHash": "0x0000000000000000000000000000000000000000000000000000000000000000",
-		"extraData": "0x11bbe8db4e347b4e8c937c1c8370e4b5ed33adb3db69cbdb7a38e1e50b1b82fa",
-		"gasLimit": "0x1388"
-	},
-	"accounts": {
-		"0000000000000000000000000000000000000001": { "balance": "1", "builtin": { "name": "ecrecover", "pricing": { "linear": { "base": 3000, "word": 0 } } } },
-		"0000000000000000000000000000000000000002": { "balance": "1", "builtin": { "name": "sha256", "pricing": { "linear": { "base": 60, "word": 12 } } } },
-		"0000000000000000000000000000000000000003": { "balance": "1", "builtin": { "name": "ripemd160", "pricing": { "linear": { "base": 600, "word": 120 } } } },
-		"0000000000000000000000000000000000000004": { "balance": "1", "builtin": { "name": "identity", "pricing": { "linear": { "base": 15, "word": 3 } } } }
-	}
-}

ethcore/res/ethereum/morden.json

@@ -9,8 +9,7 @@
 				"durationLimit": "0x0d",
 				"blockReward": "0x4563918244F40000",
 				"registrar": "",
-				"frontierCompatibilityModeLimit": "0x789b0",
-				"daoRescueSoftFork": false
+				"frontierCompatibilityModeLimit": "0x789b0"
 			}
 		}
 	},

ethcore/res/ethereum/olympic.json

@@ -8,9 +8,7 @@
 				"difficultyBoundDivisor": "0x0800",
 				"durationLimit": "0x08",
 				"blockReward": "0x14D1120D7B160000",
-				"registrar": "5e70c0bbcd5636e0f9f9316e9f8633feb64d4050",
-				"frontierCompatibilityModeLimit": "0xffffffffffffffff",
-				"daoRescueSoftFork": false
+				"registrar": "5e70c0bbcd5636e0f9f9316e9f8633feb64d4050"
 			}
 		}
 	},

ethcore/res/null_morden.json

@@ -4,7 +4,7 @@
 		"Null": null
 	},
 	"params": {
-		"accountStartNonce": "0x0100000",
+		"accountStartNonce": "0x0",
 		"maximumExtraDataSize": "0x20",
 		"minGasLimit": "0x1388",
 		"networkID" : "0x2"

ethcore/src/account.rs

@@ -58,8 +58,8 @@ impl Account {
 			nonce: pod.nonce,
 			storage_root: SHA3_NULL_RLP,
 			storage_overlay: RefCell::new(pod.storage.into_iter().map(|(k, v)| (k, (Filth::Dirty, v))).collect()),
-			code_hash: Some(pod.code.sha3()),
-			code_cache: pod.code
+			code_hash: pod.code.as_ref().map(|c| c.sha3()),
+			code_cache: pod.code.as_ref().map_or_else(|| { warn!("POD account with unknown code is being created! Assuming no code."); vec![] }, |c| c.clone()),
 		}
 	}
 
@@ -108,6 +108,12 @@ impl Account {
 		self.code_cache = code;
 	}
 
+	/// Reset this account's code to the given code.
+	pub fn reset_code(&mut self, code: Bytes) {
+		self.code_hash = None;
+		self.init_code(code);
+	}
+
 	/// Set (and cache) the contents of the trie's storage at `key` to `value`.
 	pub fn set_storage(&mut self, key: H256, value: H256) {
 		self.storage_overlay.borrow_mut().insert(key, (Filth::Dirty, value));
@@ -336,6 +342,21 @@ mod tests {
 		assert_eq!(a.code_hash().hex(), "af231e631776a517ca23125370d542873eca1fb4d613ed9b5d5335a46ae5b7eb");
 	}
 
+	#[test]
+	fn reset_code() {
+		let mut a = Account::new_contract(69.into(), 0.into());
+		let mut db = MemoryDB::new();
+		let mut db = AccountDBMut::new(&mut db, &Address::new());
+		a.init_code(vec![0x55, 0x44, 0xffu8]);
+		assert_eq!(a.code_hash(), SHA3_EMPTY);
+		a.commit_code(&mut db);
+		assert_eq!(a.code_hash().hex(), "af231e631776a517ca23125370d542873eca1fb4d613ed9b5d5335a46ae5b7eb");
+		a.reset_code(vec![0x55]);
+		assert_eq!(a.code_hash(), SHA3_EMPTY);
+		a.commit_code(&mut db);
+		assert_eq!(a.code_hash().hex(), "37bf2238b11b68cdc8382cece82651b59d3c3988873b6e0f33d79694aa45f1be");
+	}
+
 	#[test]
 	fn rlpio() {
 		let a = Account::new(U256::from(69u8), U256::from(0u8), HashMap::new(), Bytes::new());
@@ -348,7 +369,6 @@ mod tests {
 
 	#[test]
 	fn new_account() {
-
 		let a = Account::new(U256::from(69u8), U256::from(0u8), HashMap::new(), Bytes::new());
 		assert_eq!(a.rlp().to_hex(), "f8448045a056e81f171bcc55a6ff8345e692c0f86e5b48e01b996cadc001622fb5e363b421a0c5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470");
 		assert_eq!(a.balance(), &U256::from(69u8));
@@ -359,7 +379,6 @@ mod tests {
 
 	#[test]
 	fn create_account() {
-
 		let a = Account::new(U256::from(69u8), U256::from(0u8), HashMap::new(), Bytes::new());
 		assert_eq!(a.rlp().to_hex(), "f8448045a056e81f171bcc55a6ff8345e692c0f86e5b48e01b996cadc001622fb5e363b421a0c5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470");
 	}

ethcore/src/account_provider.rs

@@ -17,9 +17,9 @@
 //! Account management.
 
 use std::fmt;
-use std::sync::RwLock;
 use std::collections::HashMap;
-use util::{Address as H160, H256, H520};
+use std::time::{Instant, Duration};
+use util::{Address as H160, H256, H520, Mutex};
 use ethstore::{SecretStore, Error as SSError, SafeAccount, EthStore};
 use ethstore::dir::{KeyDirectory};
 use ethstore::ethkey::{Address as SSAddress, Message as SSMessage, Secret as SSSecret, Random, Generator};
@@ -32,6 +32,8 @@ enum Unlock {
 	/// Account unlocked permantently can always sign message.
 	/// Use with caution.
 	Perm,
+	/// Account unlocked with a timeout
+	Timed((Instant, u32)),
 }
 
 /// Data associated with account.
@@ -126,7 +128,7 @@ impl KeyDirectory for NullDir {
 /// Account management.
 /// Responsible for unlocking accounts.
 pub struct AccountProvider {
-	unlocked: RwLock<HashMap<SSAddress, AccountData>>,
+	unlocked: Mutex<HashMap<SSAddress, AccountData>>,
 	sstore: Box<SecretStore>,
 }
 
@@ -134,7 +136,7 @@ impl AccountProvider {
 	/// Creates new account provider.
 	pub fn new(sstore: Box<SecretStore>) -> Self {
 		AccountProvider {
-			unlocked: RwLock::new(HashMap::new()),
+			unlocked: Mutex::new(HashMap::new()),
 			sstore: sstore,
 		}
 	}
@@ -142,7 +144,7 @@ impl AccountProvider {
 	/// Creates not disk backed provider.
 	pub fn transient_provider() -> Self {
 		AccountProvider {
-			unlocked: RwLock::new(HashMap::new()),
+			unlocked: Mutex::new(HashMap::new()),
 			sstore: Box::new(EthStore::open(Box::new(NullDir)).unwrap())
 		}
 	}
@@ -176,12 +178,10 @@ impl AccountProvider {
 		let _ = try!(self.sstore.sign(&account, &password, &Default::default()));
 
 		// check if account is already unlocked pernamently, if it is, do nothing
-		{
-			let unlocked = self.unlocked.read().unwrap();
-			if let Some(data) = unlocked.get(&account) {
-				if let Unlock::Perm = data.unlock {
-					return Ok(())
-				}
+		let mut unlocked = self.unlocked.lock().unwrap();
+		if let Some(data) = unlocked.get(&account) {
+			if let Unlock::Perm = data.unlock {
+				return Ok(())
 			}
 		}
 
@@ -190,7 +190,6 @@ impl AccountProvider {
 			password: password,
 		};
 
-		let mut unlocked = self.unlocked.write().unwrap();
 		unlocked.insert(account, data);
 		Ok(())
 	}
@@ -205,10 +204,15 @@ impl AccountProvider {
 		self.unlock_account(account, password, Unlock::Temp)
 	}
 
+	/// Unlocks account temporarily with a timeout.
+	pub fn unlock_account_timed<A>(&self, account: A, password: String, duration_ms: u32) -> Result<(), Error> where Address: From<A> {
+		self.unlock_account(account, password, Unlock::Timed((Instant::now(), duration_ms)))
+	}
+
 	/// Checks if given account is unlocked
 	pub fn is_unlocked<A>(&self, account: A) -> bool where Address: From<A> {
 		let account = Address::from(account).into();
-		let unlocked = self.unlocked.read().unwrap();
+		let unlocked = self.unlocked.lock().unwrap();
 		unlocked.get(&account).is_some()
 	}
 
@@ -218,15 +222,20 @@ impl AccountProvider {
 		let message = Message::from(message).into();
 
 		let data = {
-			let unlocked = self.unlocked.read().unwrap();
-			try!(unlocked.get(&account).ok_or(Error::NotUnlocked)).clone()
+			let mut unlocked = self.unlocked.lock().unwrap();
+			let data = try!(unlocked.get(&account).ok_or(Error::NotUnlocked)).clone();
+			if let Unlock::Temp = data.unlock {
+				unlocked.remove(&account).expect("data exists: so key must exist: qed");
+			}
+			if let Unlock::Timed((ref start, ref duration)) = data.unlock {
+				if start.elapsed() > Duration::from_millis(*duration as u64) {
+					unlocked.remove(&account).expect("data exists: so key must exist: qed");
+					return Err(Error::NotUnlocked);
+				}
+			}
+			data
 		};
 
-		if let Unlock::Temp = data.unlock {
-			let mut unlocked = self.unlocked.write().unwrap();
-			unlocked.remove(&account).expect("data exists: so key must exist: qed");
-		}
-
 		let signature = try!(self.sstore.sign(&account, &data.password, &message));
 		Ok(H520(signature.into()))
 	}
@@ -244,6 +253,7 @@ impl AccountProvider {
 mod tests {
 	use super::AccountProvider;
 	use ethstore::ethkey::{Generator, Random};
+	use std::time::Duration;
 
 	#[test]
 	fn unlock_account_temp() {
@@ -269,4 +279,16 @@ mod tests {
 		assert!(ap.sign(kp.address(), [0u8; 32]).is_ok());
 		assert!(ap.sign(kp.address(), [0u8; 32]).is_ok());
 	}
+
+	#[test]
+	fn unlock_account_timer() {
+		let kp = Random.generate().unwrap();
+		let ap = AccountProvider::transient_provider();
+		assert!(ap.insert_account(kp.secret().clone(), "test").is_ok());
+		assert!(ap.unlock_account_timed(kp.address(), "test1".into(), 2000).is_err());
+		assert!(ap.unlock_account_timed(kp.address(), "test".into(), 2000).is_ok());
+		assert!(ap.sign(kp.address(), [0u8; 32]).is_ok());
+		::std::thread::sleep(Duration::from_millis(2000));
+		assert!(ap.sign(kp.address(), [0u8; 32]).is_err());
+	}
 }

ethcore/src/action_params.rs

@@ -17,6 +17,7 @@
 //! Evm input params.
 use common::*;
 use ethjson;
+use types::executed::CallType;
 
 /// Transaction value
 #[derive(Clone, Debug)]
@@ -58,7 +59,10 @@ pub struct ActionParams {
 	/// Code being executed.
 	pub code: Option<Bytes>,
 	/// Input data.
-	pub data: Option<Bytes>
+	pub data: Option<Bytes>,
+	/// Type of call
+	pub call_type: CallType,
+
 }
 
 impl Default for ActionParams {
@@ -73,16 +77,18 @@ impl Default for ActionParams {
 			gas_price: U256::zero(),
 			value: ActionValue::Transfer(U256::zero()),
 			code: None,
-			data: None
+			data: None,
+			call_type: CallType::None,
 		}
 	}
 }
 
 impl From<ethjson::vm::Transaction> for ActionParams {
 	fn from(t: ethjson::vm::Transaction) -> Self {
+		let address: Address = t.address.into();
 		ActionParams {
 			code_address: Address::new(),
-			address: t.address.into(),
+			address: address,
 			sender: t.sender.into(),
 			origin: t.origin.into(),
 			code: Some(t.code.into()),
@@ -90,6 +96,7 @@ impl From<ethjson::vm::Transaction> for ActionParams {
 			gas: t.gas.into(),
 			gas_price: t.gas_price.into(),
 			value: ActionValue::Transfer(t.value.into()),
+			call_type: match address.is_zero() { true => CallType::None, false => CallType::Call },	// TODO @debris is this correct?
 		}
 	}
 }

ethcore/src/basic_authority.rs

@@ -80,7 +80,7 @@ impl Engine for BasicAuthority {
 		Schedule::new_homestead()
 	}
 
-	fn populate_from_parent(&self, header: &mut Header, parent: &Header, gas_floor_target: U256) {
+	fn populate_from_parent(&self, header: &mut Header, parent: &Header, gas_floor_target: U256, _gas_ceil_target: U256) {
 		header.difficulty = parent.difficulty;
 		header.gas_limit = {
 			let gas_limit = parent.gas_limit;
@@ -203,7 +203,6 @@ mod tests {
 			timestamp: 0,
 			difficulty: 0.into(),
 			last_hashes: vec![],
-			dao_rescue_block_gas_limit: None,
 			gas_used: 0.into(),
 			gas_limit: 0.into(),
 		});
@@ -254,7 +253,7 @@ mod tests {
 		spec.ensure_db_good(db.as_hashdb_mut());
 		let last_hashes = vec![genesis_header.hash()];
 		let vm_factory = Default::default();
-		let b = OpenBlock::new(engine.deref(), &vm_factory, false, db, &genesis_header, last_hashes, None, addr, 3141562.into(), vec![]).unwrap();
+		let b = OpenBlock::new(engine.deref(), &vm_factory, false, db, &genesis_header, last_hashes, addr, (3141562.into(), 31415620.into()), vec![]).unwrap();
 		let b = b.close_and_lock();
 		let seal = engine.generate_seal(b.block(), Some(&tap)).unwrap();
 		assert!(b.try_seal(engine.deref(), seal).is_ok());

ethcore/src/block.rs

@@ -22,7 +22,7 @@ use common::*;
 use engine::*;
 use state::*;
 use verification::PreverifiedBlock;
-use trace::Trace;
+use trace::FlatTrace;
 use evm::Factory as EvmFactory;
 
 /// A block, encoded as it is on the block chain.
@@ -41,8 +41,18 @@ impl Block {
 	pub fn is_good(b: &[u8]) -> bool {
 		UntrustedRlp::new(b).as_val::<Block>().is_ok()
 	}
+
+	/// Get the RLP-encoding of the block without the seal.
+	pub fn rlp_bytes(&self, seal: Seal) -> Bytes {
+		let mut block_rlp = RlpStream::new_list(3);
+		self.header.stream_rlp(&mut block_rlp, seal);
+		block_rlp.append(&self.transactions);
+		block_rlp.append(&self.uncles);
+		block_rlp.out()
+	}
 }
 
+
 impl Decodable for Block {
 	fn decode<D>(decoder: &D) -> Result<Self, DecoderError> where D: Decoder {
 		if decoder.as_raw().len() != try!(decoder.as_rlp().payload_info()).total() {
@@ -68,7 +78,7 @@ pub struct ExecutedBlock {
 	receipts: Vec<Receipt>,
 	transactions_set: HashSet<H256>,
 	state: State,
-	traces: Option<Vec<Trace>>,
+	traces: Option<Vec<Vec<FlatTrace>>>,
 }
 
 /// A set of references to `ExecutedBlock` fields that are publicly accessible.
@@ -84,7 +94,7 @@ pub struct BlockRefMut<'a> {
 	/// State.
 	pub state: &'a mut State,
 	/// Traces.
-	pub traces: &'a Option<Vec<Trace>>,
+	pub traces: &'a Option<Vec<Vec<FlatTrace>>>,
 }
 
 /// A set of immutable references to `ExecutedBlock` fields that are publicly accessible.
@@ -100,7 +110,7 @@ pub struct BlockRef<'a> {
 	/// State.
 	pub state: &'a State,
 	/// Traces.
-	pub traces: &'a Option<Vec<Trace>>,
+	pub traces: &'a Option<Vec<Vec<FlatTrace>>>,
 }
 
 impl ExecutedBlock {
@@ -142,9 +152,12 @@ impl ExecutedBlock {
 
 /// Trait for a object that is a `ExecutedBlock`.
 pub trait IsBlock {
-	/// Get the block associated with this object.
+	/// Get the `ExecutedBlock` associated with this object.
 	fn block(&self) -> &ExecutedBlock;
 
+	/// Get the base `Block` object associated with this.
+	fn base(&self) -> &Block { &self.block().base }
+
 	/// Get the header associated with this object's block.
 	fn header(&self) -> &Header { &self.block().base.header }
 
@@ -158,12 +171,18 @@ pub trait IsBlock {
 	fn receipts(&self) -> &Vec<Receipt> { &self.block().receipts }
 
 	/// Get all information concerning transaction tracing in this block.
-	fn traces(&self) -> &Option<Vec<Trace>> { &self.block().traces }
+	fn traces(&self) -> &Option<Vec<Vec<FlatTrace>>> { &self.block().traces }
 
 	/// Get all uncles in this block.
 	fn uncles(&self) -> &Vec<Header> { &self.block().base.uncles }
 }
 
+/// Trait for a object that has a state database.
+pub trait Drain {
+	/// Drop this object and return the underlieing database.
+	fn drain(self) -> Box<JournalDB>;
+}
+
 impl IsBlock for ExecutedBlock {
 	fn block(&self) -> &ExecutedBlock { self }
 }
@@ -177,7 +196,6 @@ pub struct OpenBlock<'x> {
 	engine: &'x Engine,
 	vm_factory: &'x EvmFactory,
 	last_hashes: LastHashes,
-	dao_rescue_block_gas_limit: Option<U256>,
 }
 
 /// Just like `OpenBlock`, except that we've applied `Engine::on_close_block`, finished up the non-seal header fields,
@@ -189,7 +207,6 @@ pub struct ClosedBlock {
 	block: ExecutedBlock,
 	uncle_bytes: Bytes,
 	last_hashes: LastHashes,
-	dao_rescue_block_gas_limit: Option<U256>,
 	unclosed_state: State,
 }
 
@@ -220,9 +237,8 @@ impl<'x> OpenBlock<'x> {
 		db: Box<JournalDB>,
 		parent: &Header,
 		last_hashes: LastHashes,
-		dao_rescue_block_gas_limit: Option<U256>,
 		author: Address,
-		gas_floor_target: U256,
+		gas_range_target: (U256, U256),
 		extra_data: Bytes,
 	) -> Result<Self, Error> {
 		let state = try!(State::from_existing(db, parent.state_root().clone(), engine.account_start_nonce()));
@@ -231,7 +247,6 @@ impl<'x> OpenBlock<'x> {
 			engine: engine,
 			vm_factory: vm_factory,
 			last_hashes: last_hashes,
-			dao_rescue_block_gas_limit: dao_rescue_block_gas_limit,
 		};
 
 		r.block.base.header.parent_hash = parent.hash();
@@ -241,7 +256,7 @@ impl<'x> OpenBlock<'x> {
 		r.block.base.header.extra_data = extra_data;
 		r.block.base.header.note_dirty();
 
-		engine.populate_from_parent(&mut r.block.base.header, parent, gas_floor_target);
+		engine.populate_from_parent(&mut r.block.base.header, parent, gas_range_target.0, gas_range_target.1);
 		engine.on_new_block(&mut r.block);
 		Ok(r)
 	}
@@ -288,7 +303,6 @@ impl<'x> OpenBlock<'x> {
 	/// Get the environment info concerning this block.
 	pub fn env_info(&self) -> EnvInfo {
 		// TODO: memoise.
-		const SOFT_FORK_BLOCK: u64 = 1775000;
 		EnvInfo {
 			number: self.block.base.header.number,
 			author: self.block.base.header.author.clone(),
@@ -297,7 +311,6 @@ impl<'x> OpenBlock<'x> {
 			last_hashes: self.last_hashes.clone(),		// TODO: should be a reference.
 			gas_used: self.block.receipts.last().map_or(U256::zero(), |r| r.gas_used),
 			gas_limit: self.block.base.header.gas_limit.clone(),
-			dao_rescue_block_gas_limit: if self.block.base.header.number == SOFT_FORK_BLOCK { Some(self.block.base.header.gas_limit) } else { self.dao_rescue_block_gas_limit },
 		}
 	}
 
@@ -316,7 +329,7 @@ impl<'x> OpenBlock<'x> {
 				self.block.transactions_set.insert(h.unwrap_or_else(||t.hash()));
 				self.block.base.transactions.push(t);
 				let t = outcome.trace;
-				self.block.traces.as_mut().map(|traces| traces.push(t.expect("self.block.traces.is_some(): so we must be tracing: qed")));
+				self.block.traces.as_mut().map(|traces| traces.push(t));
 				self.block.receipts.push(outcome.receipt);
 				Ok(&self.block.receipts.last().unwrap())
 			}
@@ -344,7 +357,6 @@ impl<'x> OpenBlock<'x> {
 			block: s.block,
 			uncle_bytes: uncle_bytes,
 			last_hashes: s.last_hashes,
-			dao_rescue_block_gas_limit: s.dao_rescue_block_gas_limit,
 			unclosed_state: unclosed_state,
 		}
 	}
@@ -404,7 +416,6 @@ impl ClosedBlock {
 			engine: engine,
 			vm_factory: vm_factory,
 			last_hashes: self.last_hashes,
-			dao_rescue_block_gas_limit: self.dao_rescue_block_gas_limit,
 		}
 	}
 }
@@ -436,9 +447,11 @@ impl LockedBlock {
 			_ => Ok(SealedBlock { block: s.block, uncle_bytes: s.uncle_bytes }),
 		}
 	}
+}
 
+impl Drain for LockedBlock {
 	/// Drop this object and return the underlieing database.
-	pub fn drain(self) -> Box<JournalDB> { self.block.state.drop().1 }
+	fn drain(self) -> Box<JournalDB> { self.block.state.drop().1 }
 }
 
 impl SealedBlock {
@@ -450,9 +463,11 @@ impl SealedBlock {
 		block_rlp.append_raw(&self.uncle_bytes, 1);
 		block_rlp.out()
 	}
+}
 
+impl Drain for SealedBlock {
 	/// Drop this object and return the underlieing database.
-	pub fn drain(self) -> Box<JournalDB> { self.block.state.drop().1 }
+	fn drain(self) -> Box<JournalDB> { self.block.state.drop().1 }
 }
 
 impl IsBlock for SealedBlock {
@@ -470,7 +485,6 @@ pub fn enact(
 	db: Box<JournalDB>,
 	parent: &Header,
 	last_hashes: LastHashes,
-	dao_rescue_block_gas_limit: Option<U256>,
 	vm_factory: &EvmFactory
 ) -> Result<LockedBlock, Error> {
 	{
@@ -480,10 +494,12 @@ pub fn enact(
 		}
 	}
 
-	let mut b = try!(OpenBlock::new(engine, vm_factory, tracing, db, parent, last_hashes, dao_rescue_block_gas_limit, header.author().clone(), 3141562.into(), header.extra_data().clone()));
+	let mut b = try!(OpenBlock::new(engine, vm_factory, tracing, db, parent, last_hashes, Address::new(), (3141562.into(), 31415620.into()), vec![]));
 	b.set_difficulty(*header.difficulty());
 	b.set_gas_limit(*header.gas_limit());
 	b.set_timestamp(header.timestamp());
+	b.set_author(header.author().clone());
+	b.set_extra_data(header.extra_data().clone()).unwrap_or_else(|e| warn!("Couldn't set extradata: {}. Ignoring.", e));
 	for t in transactions { try!(b.push_transaction(t.clone(), None)); }
 	for u in uncles { try!(b.push_uncle(u.clone())); }
 	Ok(b.close_and_lock())
@@ -498,12 +514,11 @@ pub fn enact_bytes(
 	db: Box<JournalDB>,
 	parent: &Header,
 	last_hashes: LastHashes,
-	dao_rescue_block_gas_limit: Option<U256>,
 	vm_factory: &EvmFactory
 ) -> Result<LockedBlock, Error> {
 	let block = BlockView::new(block_bytes);
 	let header = block.header();
-	enact(&header, &block.transactions(), &block.uncles(), engine, tracing, db, parent, last_hashes, dao_rescue_block_gas_limit, vm_factory)
+	enact(&header, &block.transactions(), &block.uncles(), engine, tracing, db, parent, last_hashes, vm_factory)
 }
 
 /// Enact the block given by `block_bytes` using `engine` on the database `db` with given `parent` block header
@@ -515,11 +530,10 @@ pub fn enact_verified(
 	db: Box<JournalDB>,
 	parent: &Header,
 	last_hashes: LastHashes,
-	dao_rescue_block_gas_limit: Option<U256>,
 	vm_factory: &EvmFactory
 ) -> Result<LockedBlock, Error> {
 	let view = BlockView::new(&block.bytes);
-	enact(&block.header, &block.transactions, &view.uncles(), engine, tracing, db, parent, last_hashes, dao_rescue_block_gas_limit, vm_factory)
+	enact(&block.header, &block.transactions, &view.uncles(), engine, tracing, db, parent, last_hashes, vm_factory)
 }
 
 /// Enact the block given by `block_bytes` using `engine` on the database `db` with given `parent` block header. Seal the block aferwards
@@ -531,11 +545,10 @@ pub fn enact_and_seal(
 	db: Box<JournalDB>,
 	parent: &Header,
 	last_hashes: LastHashes,
-	dao_rescue_block_gas_limit: Option<U256>,
 	vm_factory: &EvmFactory
 ) -> Result<SealedBlock, Error> {
 	let header = BlockView::new(block_bytes).header_view();
-	Ok(try!(try!(enact_bytes(block_bytes, engine, tracing, db, parent, last_hashes, dao_rescue_block_gas_limit, vm_factory)).seal(engine, header.seal())))
+	Ok(try!(try!(enact_bytes(block_bytes, engine, tracing, db, parent, last_hashes, vm_factory)).seal(engine, header.seal())))
 }
 
 #[cfg(test)]
@@ -555,7 +568,7 @@ mod tests {
 		spec.ensure_db_good(db.as_hashdb_mut());
 		let last_hashes = vec![genesis_header.hash()];
 		let vm_factory = Default::default();
-		let b = OpenBlock::new(engine.deref(), &vm_factory, false, db, &genesis_header, last_hashes, None, Address::zero(), 3141562.into(), vec![]).unwrap();
+		let b = OpenBlock::new(engine.deref(), &vm_factory, false, db, &genesis_header, last_hashes, Address::zero(), (3141562.into(), 31415620.into()), vec![]).unwrap();
 		let b = b.close_and_lock();
 		let _ = b.seal(engine.deref(), vec![]);
 	}
@@ -571,7 +584,7 @@ mod tests {
 		let mut db = db_result.take();
 		spec.ensure_db_good(db.as_hashdb_mut());
 		let vm_factory = Default::default();
-		let b = OpenBlock::new(engine.deref(), &vm_factory, false, db, &genesis_header, vec![genesis_header.hash()], None, Address::zero(), 3141562.into(), vec![]).unwrap()
+		let b = OpenBlock::new(engine.deref(), &vm_factory, false, db, &genesis_header, vec![genesis_header.hash()], Address::zero(), (3141562.into(), 31415620.into()), vec![]).unwrap()
 			.close_and_lock().seal(engine.deref(), vec![]).unwrap();
 		let orig_bytes = b.rlp_bytes();
 		let orig_db = b.drain();
@@ -579,7 +592,7 @@ mod tests {
 		let mut db_result = get_temp_journal_db();
 		let mut db = db_result.take();
 		spec.ensure_db_good(db.as_hashdb_mut());
-		let e = enact_and_seal(&orig_bytes, engine.deref(), false, db, &genesis_header, vec![genesis_header.hash()], None, &Default::default()).unwrap();
+		let e = enact_and_seal(&orig_bytes, engine.deref(), false, db, &genesis_header, vec![genesis_header.hash()], &Default::default()).unwrap();
 
 		assert_eq!(e.rlp_bytes(), orig_bytes);
 
@@ -599,7 +612,7 @@ mod tests {
 		let mut db = db_result.take();
 		spec.ensure_db_good(db.as_hashdb_mut());
 		let vm_factory = Default::default();
-		let mut open_block = OpenBlock::new(engine.deref(), &vm_factory, false, db, &genesis_header, vec![genesis_header.hash()], None, Address::zero(), 3141562.into(), vec![]).unwrap();
+		let mut open_block = OpenBlock::new(engine.deref(), &vm_factory, false, db, &genesis_header, vec![genesis_header.hash()], Address::zero(), (3141562.into(), 31415620.into()), vec![]).unwrap();
 		let mut uncle1_header = Header::new();
 		uncle1_header.extra_data = b"uncle1".to_vec();
 		let mut uncle2_header = Header::new();
@@ -614,7 +627,7 @@ mod tests {
 		let mut db_result = get_temp_journal_db();
 		let mut db = db_result.take();
 		spec.ensure_db_good(db.as_hashdb_mut());
-		let e = enact_and_seal(&orig_bytes, engine.deref(), false, db, &genesis_header, vec![genesis_header.hash()], None, &Default::default()).unwrap();
+		let e = enact_and_seal(&orig_bytes, engine.deref(), false, db, &genesis_header, vec![genesis_header.hash()], &Default::default()).unwrap();
 
 		let bytes = e.rlp_bytes();
 		assert_eq!(bytes, orig_bytes);

ethcore/src/blockchain/blockchain.rs

@@ -30,7 +30,7 @@ use blockchain::best_block::BestBlock;
 use types::tree_route::TreeRoute;
 use blockchain::update::ExtrasUpdate;
 use blockchain::{CacheSize, ImportRoute, Config};
-use db::{Writable, Readable, CacheUpdatePolicy};
+use db::{Writable, Readable, CacheUpdatePolicy, Key};
 
 const LOG_BLOOMS_LEVELS: usize = 3;
 const LOG_BLOOMS_ELEMENTS_PER_INDEX: usize = 16;
@@ -295,7 +295,34 @@ impl BlockChain {
 
 		// load best block
 		let best_block_hash = match bc.extras_db.get(b"best").unwrap() {
-			Some(best) => H256::from_slice(&best),
+			Some(best) => {
+				let best = H256::from_slice(&best);
+				let mut b = best.clone();
+				let mut removed = 0;
+				let mut best_num = 0;
+				while !bc.blocks_db.get(&b).unwrap().is_some() {
+					// track back to the best block we have in the blocks database
+					let extras: BlockDetails = bc.extras_db.read(&b).unwrap();
+					type DetailsKey = Key<BlockDetails, Target=H264>;
+					bc.extras_db.delete(&(DetailsKey::key(&b))).unwrap();
+					b = extras.parent;
+					best_num = extras.number;
+					removed += 1;
+				}
+				if b != best {
+					let batch = DBTransaction::new();
+					let range = (best_num + 1) as bc::Number .. (best_num + removed) as bc::Number;
+					let chain = bc::group::BloomGroupChain::new(bc.blooms_config, &bc);
+					let changes = chain.replace(&range, vec![]);
+					for (k, v) in changes.into_iter() {
+						batch.write(&LogGroupPosition::from(k), &BloomGroup::from(v));
+					}
+					batch.put(b"best", &b).unwrap();
+					bc.extras_db.write(batch).unwrap();
+					info!("Restored mismatched best block. Was: {}, new: {}", best.hex(), b.hex());
+				}
+				b
+			}
 			None => {
 				// best block does not exist
 				// we need to insert genesis into the cache
@@ -461,7 +488,6 @@ impl BlockChain {
 	/// Applies extras update.
 	fn apply_update(&self, update: ExtrasUpdate) {
 		let batch = DBTransaction::new();
-		batch.put(b"best", &update.info.hash).unwrap();
 
 		{
 			for hash in update.block_details.keys().cloned() {
@@ -484,14 +510,12 @@ impl BlockChain {
 
 		// These cached values must be updated last and togeterh
 		{
-			let mut best_block = self.best_block.write().unwrap();
-			let mut write_hashes = self.block_hashes.write().unwrap();
-			let mut write_txs = self.transaction_addresses.write().unwrap();
-
 			// update best block
 			match update.info.location {
 				BlockLocation::Branch => (),
 				_ => {
+					batch.put(b"best", &update.info.hash).unwrap();
+					let mut best_block = self.best_block.write().unwrap();
 					*best_block = BestBlock {
 						hash: update.info.hash,
 						number: update.info.number,
@@ -500,8 +524,11 @@ impl BlockChain {
 				}
 			}
 
-			batch.extend_with_cache(write_hashes.deref_mut(), update.block_hashes, CacheUpdatePolicy::Remove);
-			batch.extend_with_cache(write_txs.deref_mut(), update.transactions_addresses, CacheUpdatePolicy::Remove);
+			let mut write_hashes = self.block_hashes.write().unwrap();
+			let mut write_txs = self.transaction_addresses.write().unwrap();
+
+			batch.extend_with_cache(&mut *write_hashes, update.block_hashes, CacheUpdatePolicy::Remove);
+			batch.extend_with_cache(&mut *write_txs, update.transactions_addresses, CacheUpdatePolicy::Remove);
 
 			// update extras database
 			self.extras_db.write(batch).unwrap();
@@ -1162,4 +1189,31 @@ mod tests {
 		assert_eq!(blocks_b2, vec![2]);
 		assert_eq!(blocks_ba, vec![3]);
 	}
+
+	#[test]
+	fn test_best_block_update() {
+		let mut canon_chain = ChainGenerator::default();
+		let mut finalizer = BlockFinalizer::default();
+		let genesis = canon_chain.generate(&mut finalizer).unwrap();
+
+		let temp = RandomTempPath::new();
+
+		{
+			let bc = BlockChain::new(Config::default(), &genesis, temp.as_path());
+			let uncle = canon_chain.fork(1).generate(&mut finalizer.fork()).unwrap();
+
+			// create a longer fork
+			for _ in 0..5 {
+				let canon_block = canon_chain.generate(&mut finalizer).unwrap();
+				bc.insert_block(&canon_block, vec![]);
+			}
+
+			assert_eq!(bc.best_block_number(), 5);
+			bc.insert_block(&uncle, vec![]);
+		}
+
+		// re-loading the blockchain should load the correct best block.
+		let bc = BlockChain::new(Config::default(), &genesis, temp.as_path());
+		assert_eq!(bc.best_block_number(), 5);
+	}
 }

ethcore/src/blooms/bloom.rs

@@ -20,7 +20,7 @@ use util::HeapSizeOf;
 use basic_types::LogBloom;
 
 /// Helper structure representing bloom of the trace.
-#[derive(Clone)]
+#[derive(Debug, Clone)]
 pub struct Bloom(LogBloom);
 
 impl From<LogBloom> for Bloom {

ethcore/src/blooms/bloom_group.rs

@@ -20,7 +20,7 @@ use util::HeapSizeOf;
 use super::Bloom;
 
 /// Represents group of X consecutive blooms.
-#[derive(Clone)]
+#[derive(Debug, Clone)]
 pub struct BloomGroup {
 	blooms: Vec<Bloom>,
 }

ethcore/src/client/client.rs

@@ -16,21 +16,22 @@
 
 //! Blockchain database client.
 
-use std::marker::PhantomData;
 use std::path::PathBuf;
 use std::sync::atomic::{AtomicUsize, Ordering as AtomicOrdering};
 use util::*;
 use util::panics::*;
 use views::BlockView;
-use error::{Error, ImportError, ExecutionError, BlockError, ImportResult};
+use error::{ImportError, ExecutionError, BlockError, ImportResult};
 use header::{BlockNumber, Header};
 use state::State;
 use spec::Spec;
+use basic_types::Seal;
 use engine::Engine;
 use views::HeaderView;
 use service::{NetSyncMessage, SyncMessage};
 use env_info::LastHashes;
-use verification::*;
+use verification;
+use verification::{PreverifiedBlock, Verifier};
 use block::*;
 use transaction::{LocalizedTransaction, SignedTransaction, Action};
 use blockchain::extras::TransactionAddress;
@@ -38,7 +39,8 @@ use filter::Filter;
 use log_entry::LocalizedLogEntry;
 use block_queue::{BlockQueue, BlockQueueInfo};
 use blockchain::{BlockChain, BlockProvider, TreeRoute, ImportRoute};
-use client::{BlockID, TransactionID, UncleID, TraceId, ClientConfig, BlockChainClient, MiningBlockChainClient, TraceFilter, CallAnalytics};
+use client::{BlockID, TransactionID, UncleID, TraceId, ClientConfig, DatabaseCompactionProfile,
+	BlockChainClient, MiningBlockChainClient, TraceFilter, CallAnalytics };
 use client::Error as ClientError;
 use env_info::EnvInfo;
 use executive::{Executive, Executed, TransactOptions, contract_address};
@@ -46,10 +48,13 @@ use receipt::LocalizedReceipt;
 pub use blockchain::CacheSize as BlockChainCacheSize;
 use trace::{TraceDB, ImportRequest as TraceImportRequest, LocalizedTrace, Database as TraceDatabase};
 use trace;
+use trace::FlatTransactionTraces;
+
+// re-export
 pub use types::blockchain_info::BlockChainInfo;
 pub use types::block_status::BlockStatus;
 use evm::Factory as EvmFactory;
-use miner::{Miner, MinerService, TransactionImportResult, AccountDetails};
+use miner::{Miner, MinerService};
 
 const MAX_TX_QUEUE_SIZE: usize = 4096;
 
@@ -83,7 +88,7 @@ impl ClientReport {
 
 /// Blockchain database client backed by a persistent database. Owns and manages a blockchain and a block queue.
 /// Call `import_block()` to import a block asynchronously; `flush_queue()` flushes the queue.
-pub struct Client<V = CanonVerifier> where V: Verifier {
+pub struct Client {
 	chain: Arc<BlockChain>,
 	tracedb: Arc<TraceDB<BlockChain>>,
 	engine: Arc<Box<Engine>>,
@@ -92,7 +97,7 @@ pub struct Client<V = CanonVerifier> where V: Verifier {
 	report: RwLock<ClientReport>,
 	import_lock: Mutex<()>,
 	panic_handler: Arc<PanicHandler>,
-	verifier: PhantomData<V>,
+	verifier: Box<Verifier>,
 	vm_factory: Arc<EvmFactory>,
 	miner: Arc<Miner>,
 	io_channel: IoChannel<NetSyncMessage>,
@@ -107,13 +112,6 @@ const HISTORY: u64 = 1200;
 // of which you actually want force an upgrade.
 const CLIENT_DB_VER_STR: &'static str = "5.3";
 
-impl Client<CanonVerifier> {
-	/// Create a new client with given spec and DB path.
-	pub fn new(config: ClientConfig, spec: Spec, path: &Path, miner: Arc<Miner>, message_channel: IoChannel<NetSyncMessage> ) -> Result<Arc<Client>, ClientError> {
-		Client::<CanonVerifier>::new_with_verifier(config, spec, path, miner, message_channel)
-	}
-}
-
 /// Get the path for the databases given the root path and information on the databases.
 pub fn get_db_path(path: &Path, pruning: journaldb::Algorithm, genesis_hash: H256) -> PathBuf {
 	let mut dir = path.to_path_buf();
@@ -131,25 +129,35 @@ pub fn append_path(path: &Path, item: &str) -> String {
 	p.to_str().unwrap().to_owned()
 }
 
-impl<V> Client<V> where V: Verifier {
+impl Client {
 	///  Create a new client with given spec and DB path and custom verifier.
-	pub fn new_with_verifier(
+	pub fn new(
 		config: ClientConfig,
 		spec: Spec,
 		path: &Path,
 		miner: Arc<Miner>,
 		message_channel: IoChannel<NetSyncMessage>)
-		-> Result<Arc<Client<V>>, ClientError>
+		-> Result<Arc<Client>, ClientError>
 	{
 		let path = get_db_path(path, config.pruning, spec.genesis_header().hash());
 		let gb = spec.genesis_block();
 		let chain = Arc::new(BlockChain::new(config.blockchain, &gb, &path));
 		let tracedb = Arc::new(try!(TraceDB::new(config.tracing, &path, chain.clone())));
 
+		let mut state_db_config = match config.db_cache_size {
+			None => DatabaseConfig::default(),
+			Some(cache_size) => DatabaseConfig::with_cache(cache_size),
+		};
+
+		if config.db_compaction == DatabaseCompactionProfile::HDD {
+			state_db_config = state_db_config.compaction(CompactionProfile::hdd());
+		}
+
 		let mut state_db = journaldb::new(
 			&append_path(&path, "state"),
 			config.pruning,
-			config.db_cache_size);
+			state_db_config
+		);
 
 		if state_db.is_empty() && spec.ensure_db_good(state_db.as_hashdb_mut()) {
 			state_db.commit(0, &spec.genesis_header().hash(), None).expect("Error commiting genesis state to state DB");
@@ -170,7 +178,7 @@ impl<V> Client<V> where V: Verifier {
 			report: RwLock::new(Default::default()),
 			import_lock: Mutex::new(()),
 			panic_handler: panic_handler,
-			verifier: PhantomData,
+			verifier: verification::new(config.verifier_type),
 			vm_factory: Arc::new(EvmFactory::new(config.vm_type)),
 			miner: miner,
 			io_channel: message_channel,
@@ -212,7 +220,7 @@ impl<V> Client<V> where V: Verifier {
 		}
 
 		// Verify Block Family
-		let verify_family_result = V::verify_block_family(&header, &block.bytes, engine, self.chain.deref());
+		let verify_family_result = self.verifier.verify_block_family(&header, &block.bytes, engine, self.chain.deref());
 		if let Err(e) = verify_family_result {
 			warn!(target: "client", "Stage 3 block verification failed for #{} ({})\nError: {:?}", header.number(), header.hash(), e);
 			return Err(());
@@ -230,7 +238,7 @@ impl<V> Client<V> where V: Verifier {
 		let last_hashes = self.build_last_hashes(header.parent_hash.clone());
 		let db = self.state_db.lock().unwrap().boxed_clone();
 
-		let enact_result = enact_verified(&block, engine, self.tracedb.tracing_enabled(), db, &parent, last_hashes, self.dao_rescue_block_gas_limit(header.parent_hash.clone()), &self.vm_factory);
+		let enact_result = enact_verified(&block, engine, self.tracedb.tracing_enabled(), db, &parent, last_hashes, &self.vm_factory);
 		if let Err(e) = enact_result {
 			warn!(target: "client", "Block import failed for #{} ({})\nError: {:?}", header.number(), header.hash(), e);
 			return Err(());
@@ -238,7 +246,7 @@ impl<V> Client<V> where V: Verifier {
 
 		// Final Verification
 		let locked_block = enact_result.unwrap();
-		if let Err(e) = V::verify_block_final(&header, locked_block.block().header()) {
+		if let Err(e) = self.verifier.verify_block_final(&header, locked_block.block().header()) {
 			warn!(target: "client", "Stage 4 block verification failed for #{} ({})\nError: {:?}", header.number(), header.hash(), e);
 			return Err(());
 		}
@@ -246,7 +254,7 @@ impl<V> Client<V> where V: Verifier {
 		Ok(locked_block)
 	}
 
-	fn calculate_enacted_retracted(&self, import_results: Vec<ImportRoute>) -> (Vec<H256>, Vec<H256>) {
+	fn calculate_enacted_retracted(&self, import_results: &[ImportRoute]) -> (Vec<H256>, Vec<H256>) {
 		fn map_to_vec(map: Vec<(H256, bool)>) -> Vec<H256> {
 			map.into_iter().map(|(k, _v)| k).collect()
 		}
@@ -256,12 +264,12 @@ impl<V> Client<V> where V: Verifier {
 		// could be retracted in import `k+1`. This is why to understand if after all inserts
 		// the block is enacted or retracted we iterate over all routes and at the end final state
 		// will be in the hashmap
-		let map = import_results.into_iter().fold(HashMap::new(), |mut map, route| {
-			for hash in route.enacted {
-				map.insert(hash, true);
+		let map = import_results.iter().fold(HashMap::new(), |mut map, route| {
+			for hash in &route.enacted {
+				map.insert(hash.clone(), true);
 			}
-			for hash in route.retracted {
-				map.insert(hash, false);
+			for hash in &route.retracted {
+				map.insert(hash.clone(), false);
 			}
 			map
 		});
@@ -284,8 +292,6 @@ impl<V> Client<V> where V: Verifier {
 		let _timer = PerfTimer::new("import_verified_blocks");
 		let blocks = self.block_queue.drain(max_blocks_to_import);
 
-		let original_best = self.chain_info().best_block_hash;
-
 		for block in blocks {
 			let header = &block.header;
 
@@ -296,38 +302,12 @@ impl<V> Client<V> where V: Verifier {
 			let closed_block = self.check_and_close_block(&block);
 			if let Err(_) = closed_block {
 				invalid_blocks.insert(header.hash());
-				break;
+				continue;
 			}
+			let closed_block = closed_block.unwrap();
 			imported_blocks.push(header.hash());
 
-			// Are we committing an era?
-			let ancient = if header.number() >= HISTORY {
-				let n = header.number() - HISTORY;
-				Some((n, self.chain.block_hash(n).unwrap()))
-			} else {
-				None
-			};
-
-			// Commit results
-			let closed_block = closed_block.unwrap();
-			let receipts = closed_block.block().receipts().clone();
-			let traces = From::from(closed_block.block().traces().clone().unwrap_or_else(Vec::new));
-
-			closed_block.drain()
-				.commit(header.number(), &header.hash(), ancient)
-				.expect("State DB commit failed.");
-
-			// And update the chain after commit to prevent race conditions
-			// (when something is in chain but you are not able to fetch details)
-			let route = self.chain.insert_block(&block.bytes, receipts);
-			self.tracedb.import(TraceImportRequest {
-				traces: traces,
-				block_hash: header.hash(),
-				block_number: header.number(),
-				enacted: route.enacted.clone(),
-				retracted: route.retracted.len()
-			});
-
+			let route = self.commit_block(closed_block, &header.hash(), &block.bytes);
 			import_results.push(route);
 
 			self.report.write().unwrap().accrue_block(&block);
@@ -348,7 +328,7 @@ impl<V> Client<V> where V: Verifier {
 
 		{
 			if !imported_blocks.is_empty() && self.block_queue.queue_info().is_empty() {
-				let (enacted, retracted) = self.calculate_enacted_retracted(import_results);
+				let (enacted, retracted) = self.calculate_enacted_retracted(&import_results);
 
 				if self.queue_info().is_empty() {
 					self.miner.chain_new_blocks(self, &imported_blocks, &invalid_blocks, &enacted, &retracted);
@@ -359,29 +339,57 @@ impl<V> Client<V> where V: Verifier {
 					invalid: invalid_blocks,
 					enacted: enacted,
 					retracted: retracted,
-				})).unwrap();
-			}
-		}
-
-		{
-			if self.chain_info().best_block_hash != original_best {
-				self.miner.update_sealing(self);
+					sealed: Vec::new(),
+				})).unwrap_or_else(|e| warn!("Error sending IO notification: {:?}", e));
 			}
 		}
 
 		imported
 	}
 
+	fn commit_block<B>(&self, block: B, hash: &H256, block_data: &Bytes) -> ImportRoute where B: IsBlock + Drain {
+		let number = block.header().number();
+		// Are we committing an era?
+		let ancient = if number >= HISTORY {
+			let n = number - HISTORY;
+			Some((n, self.chain.block_hash(n).unwrap()))
+		} else {
+			None
+		};
+
+		// Commit results
+		let receipts = block.receipts().to_owned();
+		let traces = block.traces().clone().unwrap_or_else(Vec::new);
+		let traces: Vec<FlatTransactionTraces> = traces.into_iter()
+			.map(Into::into)
+			.collect();
+
+		//let traces = From::from(block.traces().clone().unwrap_or_else(Vec::new));
+
+		// CHECK! I *think* this is fine, even if the state_root is equal to another
+		// already-imported block of the same number.
+		// TODO: Prove it with a test.
+		block.drain().commit(number, hash, ancient).expect("State DB commit failed.");
+
+		// And update the chain after commit to prevent race conditions
+		// (when something is in chain but you are not able to fetch details)
+		let route = self.chain.insert_block(block_data, receipts);
+		self.tracedb.import(TraceImportRequest {
+			traces: traces.into(),
+			block_hash: hash.clone(),
+			block_number: number,
+			enacted: route.enacted.clone(),
+			retracted: route.retracted.len()
+		});
+		route
+	}
+
 	/// Import transactions from the IO queue
 	pub fn import_queued_transactions(&self, transactions: &[Bytes]) -> usize {
 		let _timer = PerfTimer::new("import_queued_transactions");
 		self.queue_transactions.fetch_sub(transactions.len(), AtomicOrdering::SeqCst);
-		let fetch_account = |a: &Address| AccountDetails {
-			nonce: self.latest_nonce(a),
-			balance: self.latest_balance(a),
-		};
-		let tx = transactions.iter().filter_map(|bytes| UntrustedRlp::new(&bytes).as_val().ok()).collect();
-		let results = self.miner.import_transactions(self, tx, fetch_account);
+		let txs = transactions.iter().filter_map(|bytes| UntrustedRlp::new(&bytes).as_val().ok()).collect();
+		let results = self.miner.import_external_transactions(self, txs);
 		results.len()
 	}
 
@@ -391,8 +399,10 @@ impl<V> Client<V> where V: Verifier {
 	/// Otherwise, this can fail (but may not) if the DB prunes state.
 	pub fn state_at(&self, id: BlockID) -> Option<State> {
 		// fast path for latest state.
-		if let BlockID::Latest = id.clone() {
-			return Some(self.state())
+		match id.clone() {
+			BlockID::Pending => return self.miner.pending_state().or_else(|| Some(self.state())),
+			BlockID::Latest => return Some(self.state()),
+			_ => {},
 		}
 
 		let block_number = match self.block_number(id.clone()) {
@@ -449,7 +459,7 @@ impl<V> Client<V> where V: Verifier {
 			BlockID::Number(number) => Some(number),
 			BlockID::Hash(ref hash) => self.chain.block_number(hash),
 			BlockID::Earliest => Some(0),
-			BlockID::Latest => Some(self.chain.best_block_number())
+			BlockID::Latest | BlockID::Pending => Some(self.chain.best_block_number()),
 		}
 	}
 
@@ -458,7 +468,7 @@ impl<V> Client<V> where V: Verifier {
 			BlockID::Hash(hash) => Some(hash),
 			BlockID::Number(number) => chain.block_hash(number),
 			BlockID::Earliest => chain.block_hash(0),
-			BlockID::Latest => Some(chain.best_block_hash())
+			BlockID::Latest | BlockID::Pending => Some(chain.best_block_hash()),
 		}
 	}
 
@@ -473,7 +483,7 @@ impl<V> Client<V> where V: Verifier {
 	}
 }
 
-impl<V> BlockChainClient for Client<V> where V: Verifier {
+impl BlockChainClient for Client {
 	fn call(&self, t: &SignedTransaction, analytics: CallAnalytics) -> Result<Executed, ExecutionError> {
 		let header = self.block_header(BlockID::Latest).unwrap();
 		let view = HeaderView::new(&header);
@@ -486,7 +496,6 @@ impl<V> BlockChainClient for Client<V> where V: Verifier {
 			last_hashes: last_hashes,
 			gas_used: U256::zero(),
 			gas_limit: U256::max_value(),
-			dao_rescue_block_gas_limit: self.dao_rescue_block_gas_limit(view.parent_hash()),
 		};
 		// that's just a copy of the state.
 		let mut state = self.state();
@@ -512,9 +521,6 @@ impl<V> BlockChainClient for Client<V> where V: Verifier {
 		ret
 	}
 
-	fn vm_factory(&self) -> &EvmFactory {
-		&self.vm_factory
-	}
 
 	fn block_header(&self, id: BlockID) -> Option<Bytes> {
 		Self::block_hash(&self.chain, id).and_then(|hash| self.chain.block(&hash).map(|bytes| BlockView::new(&bytes).rlp().at(0).as_raw().to_vec()))
@@ -533,6 +539,11 @@ impl<V> BlockChainClient for Client<V> where V: Verifier {
 	}
 
 	fn block(&self, id: BlockID) -> Option<Bytes> {
+		if let &BlockID::Pending = &id {
+			if let Some(block) = self.miner.pending_block() { 
+				return Some(block.rlp_bytes(Seal::Without));
+			}
+		}
 		Self::block_hash(&self.chain, id).and_then(|hash| {
 			self.chain.block(&hash)
 		})
@@ -547,6 +558,11 @@ impl<V> BlockChainClient for Client<V> where V: Verifier {
 	}
 
 	fn block_total_difficulty(&self, id: BlockID) -> Option<U256> {
+		if let &BlockID::Pending = &id {
+			if let Some(block) = self.miner.pending_block() {
+				return Some(*block.header.difficulty() + self.block_total_difficulty(BlockID::Latest).expect("blocks in chain have details; qed"));
+			} 
+		}
 		Self::block_hash(&self.chain, id).and_then(|hash| self.chain.block_details(&hash)).map(|d| d.total_difficulty)
 	}
 
@@ -767,14 +783,6 @@ impl<V> BlockChainClient for Client<V> where V: Verifier {
 		self.build_last_hashes(self.chain.best_block_hash())
 	}
 
-	fn import_transactions(&self, transactions: Vec<SignedTransaction>) -> Vec<Result<TransactionImportResult, Error>> {
-		let fetch_account = |a: &Address| AccountDetails {
-			nonce: self.latest_nonce(a),
-			balance: self.latest_balance(a),
-		};
-		self.miner.import_transactions(self, transactions, fetch_account)
-	}
-
 	fn queue_transactions(&self, transactions: Vec<Bytes>) {
 		if self.queue_transactions.load(AtomicOrdering::Relaxed) > MAX_TX_QUEUE_SIZE {
 			debug!("Ignoring {} transactions: queue is full", transactions.len());
@@ -791,13 +799,13 @@ impl<V> BlockChainClient for Client<V> where V: Verifier {
 		}
 	}
 
-	fn all_transactions(&self) -> Vec<SignedTransaction> {
-		self.miner.all_transactions()
+	fn pending_transactions(&self) -> Vec<SignedTransaction> {
+		self.miner.pending_transactions()
 	}
 }
 
-impl<V> MiningBlockChainClient for Client<V> where V: Verifier {
-	fn prepare_open_block(&self, author: Address, gas_floor_target: U256, extra_data: Bytes) -> OpenBlock {
+impl MiningBlockChainClient for Client {
+	fn prepare_open_block(&self, author: Address, gas_range_target: (U256, U256), extra_data: Bytes) -> OpenBlock {
 		let engine = self.engine.deref().deref();
 		let h = self.chain.best_block_hash();
 
@@ -808,9 +816,8 @@ impl<V> MiningBlockChainClient for Client<V> where V: Verifier {
 			self.state_db.lock().unwrap().boxed_clone(),
 			&self.chain.block_header(&h).expect("h is best block hash: so it's header must exist: qed"),
 			self.build_last_hashes(h.clone()),
-			self.dao_rescue_block_gas_limit(h.clone()),
 			author,
-			gas_floor_target,
+			gas_range_target,
 			extra_data,
 		).expect("OpenBlock::new only fails if parent state root invalid; state root of best block's header is never invalid; qed");
 
@@ -826,6 +833,37 @@ impl<V> MiningBlockChainClient for Client<V> where V: Verifier {
 
 		open_block
 	}
+
+	fn vm_factory(&self) -> &EvmFactory {
+		&self.vm_factory
+	}
+
+	fn import_sealed_block(&self, block: SealedBlock) -> ImportResult {
+		let _import_lock = self.import_lock.lock();
+		let _timer = PerfTimer::new("import_sealed_block");
+
+		let h = block.header().hash();
+		let number = block.header().number();
+
+		let block_data = block.rlp_bytes();
+		let route = self.commit_block(block, &h, &block_data);
+		trace!(target: "client", "Imported sealed block #{} ({})", number, h);
+
+		{
+			let (enacted, retracted) = self.calculate_enacted_retracted(&[route]);
+			self.miner.chain_new_blocks(self, &[h.clone()], &[], &enacted, &retracted);
+
+			self.io_channel.send(NetworkIoMessage::User(SyncMessage::NewChainBlocks {
+				imported: vec![h.clone()],
+				invalid: vec![],
+				enacted: enacted,
+				retracted: retracted,
+				sealed: vec![h.clone()],
+			})).unwrap_or_else(|e| warn!("Error sending IO notification: {:?}", e));
+		}
+
+		Ok(h)
+	}
 }
 
 impl MayPanic for Client {

ethcore/src/client/config.rs

@@ -18,8 +18,22 @@ pub use block_queue::BlockQueueConfig;
 pub use blockchain::Config as BlockChainConfig;
 pub use trace::{Config as TraceConfig, Switch};
 pub use evm::VMType;
+pub use verification::VerifierType;
 use util::journaldb;
 
+/// Client state db compaction profile
+#[derive(Debug, PartialEq)]
+pub enum DatabaseCompactionProfile {
+	/// Default compaction profile
+	Default,
+	/// HDD or other slow storage io compaction profile
+	HDD,
+}
+
+impl Default for DatabaseCompactionProfile {
+	fn default() -> Self { DatabaseCompactionProfile::Default }
+}
+
 /// Client configuration. Includes configs for all sub-systems.
 #[derive(Debug, Default)]
 pub struct ClientConfig {
@@ -37,4 +51,8 @@ pub struct ClientConfig {
 	pub name: String,
 	/// State db cache-size if not default
 	pub db_cache_size: Option<usize>,
+	/// State db compaction profile
+	pub db_compaction: DatabaseCompactionProfile,
+	/// Type of block verifier used by client.
+	pub verifier_type: VerifierType,
 }

ethcore/src/client/error.rs

@@ -1,4 +1,5 @@
 use trace::Error as TraceError;
+use util::UtilError;
 use std::fmt::{Display, Formatter, Error as FmtError};
 
 /// Client configuration errors.
@@ -6,6 +7,10 @@ use std::fmt::{Display, Formatter, Error as FmtError};
 pub enum Error {
 	/// TraceDB configuration error.
 	Trace(TraceError),
+	/// Database error
+	Database(String),
+	/// Util error
+	Util(UtilError),
 }
 
 impl From<TraceError> for Error {
@@ -14,10 +19,18 @@ impl From<TraceError> for Error {
 	}
 }
 
+impl From<UtilError> for Error {
+	fn from(err: UtilError) -> Self {
+		Error::Util(err)
+	}
+}
+
 impl Display for Error {
 	fn fmt(&self, f: &mut Formatter) -> Result<(), FmtError> {
 		match *self {
-			Error::Trace(ref err) => write!(f, "{}", err)
+			Error::Trace(ref err) => write!(f, "{}", err),
+			Error::Util(ref err) => write!(f, "{}", err),
+			Error::Database(ref s) => write!(f, "Database error: {}", s),
 		}
 	}
 }

ethcore/src/client/mod.rs

@@ -23,7 +23,7 @@ mod test_client;
 mod trace;
 
 pub use self::client::*;
-pub use self::config::{ClientConfig, BlockQueueConfig, BlockChainConfig, Switch, VMType};
+pub use self::config::{ClientConfig, DatabaseCompactionProfile, BlockQueueConfig, BlockChainConfig, Switch, VMType};
 pub use self::error::Error;
 pub use types::ids::*;
 pub use self::test_client::{TestBlockChainClient, EachBlockWith};
@@ -37,18 +37,16 @@ use util::numbers::U256;
 use util::Itertools;
 use blockchain::TreeRoute;
 use block_queue::BlockQueueInfo;
-use block::OpenBlock;
+use block::{OpenBlock, SealedBlock};
 use header::{BlockNumber, Header};
 use transaction::{LocalizedTransaction, SignedTransaction};
 use log_entry::LocalizedLogEntry;
 use filter::Filter;
-use views::{HeaderView, BlockView};
+use views::{BlockView};
 use error::{ImportResult, ExecutionError};
 use receipt::LocalizedReceipt;
 use trace::LocalizedTrace;
 use evm::Factory as EvmFactory;
-use miner::{TransactionImportResult};
-use error::Error as EthError;
 
 /// Options concerning what analytics we run on the call.
 #[derive(Eq, PartialEq, Default, Clone, Copy, Debug)]
@@ -172,9 +170,6 @@ pub trait BlockChainClient : Sync + Send {
 	// TODO: should be able to accept blockchain location for call.
 	fn call(&self, t: &SignedTransaction, analytics: CallAnalytics) -> Result<Executed, ExecutionError>;
 
-	/// Returns EvmFactory.
-	fn vm_factory(&self) -> &EvmFactory;
-
 	/// Returns traces matching given filter.
 	fn filter_traces(&self, filter: TraceFilter) -> Option<Vec<LocalizedTrace>>;
 
@@ -190,14 +185,11 @@ pub trait BlockChainClient : Sync + Send {
 	/// Get last hashes starting from best block.
 	fn last_hashes(&self) -> LastHashes;
 
-	/// import transactions from network/other 3rd party
-	fn import_transactions(&self, transactions: Vec<SignedTransaction>) -> Vec<Result<TransactionImportResult, EthError>>;
-
 	/// Queue transactions for importing.
 	fn queue_transactions(&self, transactions: Vec<Bytes>);
 
 	/// list all transactions
-	fn all_transactions(&self) -> Vec<SignedTransaction>;
+	fn pending_transactions(&self) -> Vec<SignedTransaction>;
 
 	/// Get the gas price distribution.
 	fn gas_price_statistics(&self, sample_size: usize, distribution_size: usize) -> Result<Vec<U256>, ()> {
@@ -224,33 +216,17 @@ pub trait BlockChainClient : Sync + Send {
 			Err(())
 		}
 	}
-
-	/// Get `Some` gas limit of SOFT_FORK_BLOCK, or `None` if chain is not yet that long.
-	fn dao_rescue_block_gas_limit(&self, chain_hash: H256) -> Option<U256> {
-		const SOFT_FORK_BLOCK: u64 = 1775000;
-		// shortcut if the canon chain is already known.
-		if self.chain_info().best_block_number > SOFT_FORK_BLOCK + 1000 {
-			return self.block_header(BlockID::Number(SOFT_FORK_BLOCK)).map(|header| HeaderView::new(&header).gas_limit());
-		}
-		// otherwise check according to `chain_hash`.
-		if let Some(mut header) = self.block_header(BlockID::Hash(chain_hash)) {
-			if HeaderView::new(&header).number() < SOFT_FORK_BLOCK {
-				None
-			} else {
-				while HeaderView::new(&header).number() != SOFT_FORK_BLOCK {
-					header = self.block_header(BlockID::Hash(HeaderView::new(&header).parent_hash())).expect("chain is complete; parent of chain entry must be in chain; qed");
-				}
-				Some(HeaderView::new(&header).gas_limit())
-			}
-		} else {
-			None
-		}
-	}	
 }
 
 /// Extended client interface used for mining
 pub trait MiningBlockChainClient : BlockChainClient {
 	/// Returns OpenBlock prepared for closing.
-	fn prepare_open_block(&self, author: Address, gas_floor_target: U256, extra_data: Bytes)
+	fn prepare_open_block(&self, author: Address, gas_range_target: (U256, U256), extra_data: Bytes)
 		-> OpenBlock;
+
+	/// Returns EvmFactory.
+	fn vm_factory(&self) -> &EvmFactory;
+
+	/// Import sealed block. Skips all verifications.
+	fn import_sealed_block(&self, block: SealedBlock) -> ImportResult;
 }

ethcore/src/client/test_client.rs

@@ -20,7 +20,8 @@ use std::sync::atomic::{AtomicUsize, Ordering as AtomicOrder};
 use util::*;
 use transaction::{Transaction, LocalizedTransaction, SignedTransaction, Action};
 use blockchain::TreeRoute;
-use client::{BlockChainClient, MiningBlockChainClient, BlockChainInfo, BlockStatus, BlockID, TransactionID, UncleID, TraceId, TraceFilter, LastHashes, CallAnalytics};
+use client::{BlockChainClient, MiningBlockChainClient, BlockChainInfo, BlockStatus, BlockID,
+	TransactionID, UncleID, TraceId, TraceFilter, LastHashes, CallAnalytics };
 use header::{Header as BlockHeader, BlockNumber};
 use filter::Filter;
 use log_entry::LocalizedLogEntry;
@@ -29,16 +30,14 @@ use blockchain::extras::BlockReceipts;
 use error::{ImportResult};
 use evm::Factory as EvmFactory;
 use miner::{Miner, MinerService};
+use spec::Spec;
 
 use block_queue::BlockQueueInfo;
-use block::OpenBlock;
+use block::{OpenBlock, SealedBlock};
 use executive::Executed;
 use error::{ExecutionError};
 use trace::LocalizedTrace;
 
-use miner::{TransactionImportResult, AccountDetails};
-use error::Error as EthError;
-
 /// Test client.
 pub struct TestBlockChainClient {
 	/// Blocks.
@@ -67,6 +66,8 @@ pub struct TestBlockChainClient {
 	pub queue_size: AtomicUsize,
 	/// Miner
 	pub miner: Arc<Miner>,
+	/// Test spec
+	spec: Spec,
 }
 
 #[derive(Clone)]
@@ -105,7 +106,8 @@ impl TestBlockChainClient {
 			execution_result: RwLock::new(None),
 			receipts: RwLock::new(HashMap::new()),
 			queue_size: AtomicUsize::new(0),
-			miner: Arc::new(Miner::default()),
+			miner: Arc::new(Miner::with_spec(Spec::new_test())),
+			spec: Spec::new_test(),
 		};
 		client.add_blocks(1, EachBlockWith::Nothing); // add genesis block
 		client.genesis_hash = client.last_hash.read().unwrap().clone();
@@ -234,13 +236,21 @@ impl TestBlockChainClient {
 			BlockID::Hash(hash) => Some(hash),
 			BlockID::Number(n) => self.numbers.read().unwrap().get(&(n as usize)).cloned(),
 			BlockID::Earliest => self.numbers.read().unwrap().get(&0).cloned(),
-			BlockID::Latest => self.numbers.read().unwrap().get(&(self.numbers.read().unwrap().len() - 1)).cloned()
+			BlockID::Latest | BlockID::Pending => self.numbers.read().unwrap().get(&(self.numbers.read().unwrap().len() - 1)).cloned()
 		}
 	}
 }
 
 impl MiningBlockChainClient for TestBlockChainClient {
-	fn prepare_open_block(&self, _author: Address, _gas_floor_target: U256, _extra_data: Bytes) -> OpenBlock {
+	fn prepare_open_block(&self, _author: Address, _gas_range_target: (U256, U256), _extra_data: Bytes) -> OpenBlock {
+		unimplemented!();
+	}
+	
+	fn vm_factory(&self) -> &EvmFactory {
+		unimplemented!();
+	}
+
+	fn import_sealed_block(&self, _block: SealedBlock) -> ImportResult {
 		unimplemented!();
 	}
 }
@@ -260,11 +270,15 @@ impl BlockChainClient for TestBlockChainClient {
 
 	fn nonce(&self, address: &Address, id: BlockID) -> Option<U256> {
 		match id {
-			BlockID::Latest => Some(self.nonces.read().unwrap().get(address).cloned().unwrap_or_else(U256::zero)),
+			BlockID::Latest => Some(self.nonces.read().unwrap().get(address).cloned().unwrap_or(self.spec.params.account_start_nonce)),
 			_ => None,
 		}
 	}
 
+	fn latest_nonce(&self, address: &Address) -> U256 {
+		self.nonce(address, BlockID::Latest).unwrap()
+	}
+
 	fn code(&self, address: &Address) -> Option<Bytes> {
 		self.code.read().unwrap().get(address).cloned()
 	}
@@ -277,6 +291,10 @@ impl BlockChainClient for TestBlockChainClient {
 		}
 	}
 
+	fn latest_balance(&self, address: &Address) -> U256 {
+		self.balance(address, BlockID::Latest).unwrap()
+	}
+
 	fn storage_at(&self, address: &Address, position: &H256, id: BlockID) -> Option<H256> {
 		if let BlockID::Latest = id {
 			Some(self.storage.read().unwrap().get(&(address.clone(), position.clone())).cloned().unwrap_or_else(H256::new))
@@ -462,10 +480,6 @@ impl BlockChainClient for TestBlockChainClient {
 		}
 	}
 
-	fn vm_factory(&self) -> &EvmFactory {
-		unimplemented!();
-	}
-
 	fn filter_traces(&self, _filter: TraceFilter) -> Option<Vec<LocalizedTrace>> {
 		unimplemented!();
 	}
@@ -482,24 +496,13 @@ impl BlockChainClient for TestBlockChainClient {
 		unimplemented!();
 	}
 
-	fn import_transactions(&self, transactions: Vec<SignedTransaction>) -> Vec<Result<TransactionImportResult, EthError>> {
-		let nonces = self.nonces.read().unwrap();
-		let balances = self.balances.read().unwrap();
-		let fetch_account = |a: &Address| AccountDetails {
-			nonce: nonces[a],
-			balance: balances[a],
-		};
-
-		self.miner.import_transactions(self, transactions, &fetch_account)
-	}
-
 	fn queue_transactions(&self, transactions: Vec<Bytes>) {
 		// import right here
-		let tx = transactions.into_iter().filter_map(|bytes| UntrustedRlp::new(&bytes).as_val().ok()).collect();
-		self.import_transactions(tx);
+		let txs = transactions.into_iter().filter_map(|bytes| UntrustedRlp::new(&bytes).as_val().ok()).collect();
+		self.miner.import_external_transactions(self, txs);
 	}
 
-	fn all_transactions(&self) -> Vec<SignedTransaction> {
-		self.miner.all_transactions()
+	fn pending_transactions(&self) -> Vec<SignedTransaction> {
+		self.miner.pending_transactions()
 	}
 }

ethcore/src/engine.rs

@@ -96,7 +96,7 @@ pub trait Engine : Sync + Send {
 
 	/// Don't forget to call Super::populate_from_parent when subclassing & overriding.
 	// TODO: consider including State in the params.
-	fn populate_from_parent(&self, header: &mut Header, parent: &Header, _gas_floor_target: U256) {
+	fn populate_from_parent(&self, header: &mut Header, parent: &Header, _gas_floor_target: U256, _gas_ceil_target: U256) {
 		header.difficulty = parent.difficulty;
 		header.gas_limit = parent.gas_limit;
 		header.note_dirty();

ethcore/src/env_info.rs

@@ -39,9 +39,6 @@ pub struct EnvInfo {
 	pub last_hashes: LastHashes,
 	/// The gas used.
 	pub gas_used: U256,
-
-	/// Block gas limit at DAO rescue block SOFT_FORK_BLOCK or None if not yet there.
-	pub dao_rescue_block_gas_limit: Option<U256>,
 }
 
 impl Default for EnvInfo {
@@ -54,7 +51,6 @@ impl Default for EnvInfo {
 			gas_limit: 0.into(),
 			last_hashes: vec![],
 			gas_used: 0.into(),
-			dao_rescue_block_gas_limit: None,
 		}
 	}
 }
@@ -70,7 +66,6 @@ impl From<ethjson::vm::Env> for EnvInfo {
 			timestamp: e.timestamp.into(),
 			last_hashes: (1..cmp::min(number + 1, 257)).map(|i| format!("{}", number - i).as_bytes().sha3()).collect(),
 			gas_used: U256::zero(),
-			dao_rescue_block_gas_limit: None,
 		}
 	}
 }

ethcore/src/error.rs

@@ -58,8 +58,6 @@ pub enum TransactionError {
 	},
 	/// Transaction's gas limit (aka gas) is invalid.
 	InvalidGasLimit(OutOfBounds<U256>),
-	/// Transaction is invalid for some other reason.
-	DAORescue,
 }
 
 impl fmt::Display for TransactionError {
@@ -78,7 +76,6 @@ impl fmt::Display for TransactionError {
 			GasLimitExceeded { limit, got } =>
 				format!("Gas limit exceeded. Limit={}, Given={}", limit, got),
 			InvalidGasLimit(ref err) => format!("Invalid gas limit. {}", err),
-			DAORescue => "Transaction is invalid due to the DAO rescue.".into(),
 		};
 
 		f.write_fmt(format_args!("Transaction error ({})", msg))

ethcore/src/ethereum/ethash.rs

@@ -14,9 +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/>.
 
-extern crate ethash;
-
-use self::ethash::{quick_get_difficulty, EthashManager, H256 as EH256};
+use ethash::{quick_get_difficulty, EthashManager, H256 as EH256};
 use common::*;
 use block::*;
 use spec::CommonParams;
@@ -41,8 +39,12 @@ pub struct EthashParams {
 	pub registrar: Address,
 	/// Homestead transition block number.
 	pub frontier_compatibility_mode_limit: u64,
-	/// Enable the soft-fork logic.
-	pub dao_rescue_soft_fork: bool,
+	/// DAO hard-fork transition block (X).
+	pub dao_hardfork_transition: u64,
+	/// DAO hard-fork refund contract address (C).
+	pub dao_hardfork_beneficiary: Address,
+	/// DAO hard-fork DAO accounts list (L) 
+	pub dao_hardfork_accounts: Vec<Address>,
 }
 
 impl From<ethjson::spec::EthashParams> for EthashParams {
@@ -53,9 +55,11 @@ impl From<ethjson::spec::EthashParams> for EthashParams {
 			difficulty_bound_divisor: p.difficulty_bound_divisor.into(),
 			duration_limit: p.duration_limit.into(),
 			block_reward: p.block_reward.into(),
-			registrar: p.registrar.into(),
-			frontier_compatibility_mode_limit: p.frontier_compatibility_mode_limit.into(),
-			dao_rescue_soft_fork: p.dao_rescue_soft_fork.into(),
+			registrar: p.registrar.map(Into::into).unwrap_or(Address::new()),
+			frontier_compatibility_mode_limit: p.frontier_compatibility_mode_limit.map(Into::into).unwrap_or(0),
+			dao_hardfork_transition: p.dao_hardfork_transition.map(Into::into).unwrap_or(0x7fffffffffffffff),
+			dao_hardfork_beneficiary: p.dao_hardfork_beneficiary.map(Into::into).unwrap_or(Address::new()),
+			dao_hardfork_accounts: p.dao_hardfork_accounts.unwrap_or(vec![]).into_iter().map(Into::into).collect(),
 		}
 	}
 }
@@ -104,29 +108,47 @@ impl Engine for Ethash {
 		if env_info.number < self.ethash_params.frontier_compatibility_mode_limit {
 			Schedule::new_frontier()
 		} else {
-			let mut s = Schedule::new_homestead();
-			if self.ethash_params.dao_rescue_soft_fork {
-				s.reject_dao_transactions = env_info.dao_rescue_block_gas_limit.map_or(false, |x| x <= 4_000_000.into());
-			}
-			s
+			Schedule::new_homestead()
 		}
 	}
 
-	fn populate_from_parent(&self, header: &mut Header, parent: &Header, gas_floor_target: U256) {
+	fn populate_from_parent(&self, header: &mut Header, parent: &Header, gas_floor_target: U256, gas_ceil_target: U256) {
 		header.difficulty = self.calculate_difficuty(header, parent);
 		header.gas_limit = {
 			let gas_limit = parent.gas_limit;
 			let bound_divisor = self.ethash_params.gas_limit_bound_divisor;
 			if gas_limit < gas_floor_target {
 				min(gas_floor_target, gas_limit + gas_limit / bound_divisor - 1.into())
+			} else if gas_limit > gas_ceil_target {
+				max(gas_ceil_target, gas_limit - gas_limit / bound_divisor + 1.into())
 			} else {
-				max(gas_floor_target, gas_limit - gas_limit / bound_divisor + 1.into() + (header.gas_used * 6.into() / 5.into()) / bound_divisor)
+				min(gas_ceil_target,
+					max(gas_floor_target,
+						gas_limit - gas_limit / bound_divisor + 1.into() +
+							(header.gas_used * 6.into() / 5.into()) / bound_divisor))
 			}
 		};
+		if header.number >= self.ethash_params.dao_hardfork_transition &&
+			header.number <= self.ethash_params.dao_hardfork_transition + 9 {
+			header.extra_data = b"dao-hard-fork"[..].to_owned();
+		}  
 		header.note_dirty();
 //		info!("ethash: populate_from_parent #{}: difficulty={} and gas_limit={}", header.number, header.difficulty, header.gas_limit);
 	}
 
+	fn on_new_block(&self, block: &mut ExecutedBlock) {
+		if block.fields().header.number == self.ethash_params.dao_hardfork_transition {
+			// TODO: enable trigger function maybe?
+//			if block.fields().header.gas_limit <= 4_000_000.into() {
+				let mut state = block.fields_mut().state;
+				for child in self.ethash_params.dao_hardfork_accounts.iter() {
+					let b = state.balance(child);
+					state.transfer_balance(child, &self.ethash_params.dao_hardfork_beneficiary, &b);
+				}
+//			}
+		}
+	}
+
 	/// Apply the block reward on finalisation of the block.
 	/// This assumes that all uncles are valid uncles (i.e. of at least one generation before the current).
 	fn on_close_block(&self, block: &mut ExecutedBlock) {
@@ -168,6 +190,17 @@ impl Engine for Ethash {
 		if difficulty < header.difficulty {
 			return Err(From::from(BlockError::InvalidProofOfWork(OutOfBounds { min: Some(header.difficulty), max: None, found: difficulty })));
 		}
+
+		if header.number >= self.ethash_params.dao_hardfork_transition &&
+			header.number <= self.ethash_params.dao_hardfork_transition + 9 &&
+			header.extra_data[..] != b"dao-hard-fork"[..] {
+			return Err(From::from(BlockError::ExtraDataOutOfBounds(OutOfBounds { min: None, max: None, found: 0 })));
+		}
+
+		if header.gas_limit > 0x7fffffffffffffffu64.into() {
+			return Err(From::from(BlockError::InvalidGasLimit(OutOfBounds { min: None, max: Some(0x7fffffffffffffffu64.into()), found: header.gas_limit })));
+		}  
+		
 		Ok(())
 	}
 
@@ -237,8 +270,7 @@ impl Ethash {
 		let mut target = if header.number < frontier_limit {
 			if header.timestamp >= parent.timestamp + duration_limit {
 				parent.difficulty - (parent.difficulty / difficulty_bound_divisor)
-			}
-			else {
+			} else {
 				parent.difficulty + (parent.difficulty / difficulty_bound_divisor)
 			}
 		}
@@ -323,7 +355,7 @@ mod tests {
 		spec.ensure_db_good(db.as_hashdb_mut());
 		let last_hashes = vec![genesis_header.hash()];
 		let vm_factory = Default::default();
-		let b = OpenBlock::new(engine.deref(), &vm_factory, false, db, &genesis_header, last_hashes, None, Address::zero(), 3141562.into(), vec![]).unwrap();
+		let b = OpenBlock::new(engine.deref(), &vm_factory, false, db, &genesis_header, last_hashes, Address::zero(), (3141562.into(), 31415620.into()), vec![]).unwrap();
 		let b = b.close();
 		assert_eq!(b.state().balance(&Address::zero()), U256::from_str("4563918244f40000").unwrap());
 	}
@@ -338,7 +370,7 @@ mod tests {
 		spec.ensure_db_good(db.as_hashdb_mut());
 		let last_hashes = vec![genesis_header.hash()];
 		let vm_factory = Default::default();
-		let mut b = OpenBlock::new(engine.deref(), &vm_factory, false, db, &genesis_header, last_hashes, None, Address::zero(), 3141562.into(), vec![]).unwrap();
+		let mut b = OpenBlock::new(engine.deref(), &vm_factory, false, db, &genesis_header, last_hashes, Address::zero(), (3141562.into(), 31415620.into()), vec![]).unwrap();
 		let mut uncle = Header::new();
 		let uncle_author = address_from_hex("ef2d6d194084c2de36e0dabfce45d046b37d1106");
 		uncle.author = uncle_author.clone();
@@ -367,7 +399,6 @@ mod tests {
 			last_hashes: vec![],
 			gas_used: 0.into(),
 			gas_limit: 0.into(),
-			dao_rescue_block_gas_limit: None,
 		});
 
 		assert!(schedule.stack_limit > 0);
@@ -380,7 +411,6 @@ mod tests {
 			last_hashes: vec![],
 			gas_used: 0.into(),
 			gas_limit: 0.into(),
-			dao_rescue_block_gas_limit: None,
 		});
 
 		assert!(!schedule.have_delegate_call);

ethcore/src/ethereum/mod.rs

@@ -33,11 +33,13 @@ use super::spec::*;
 pub fn new_olympic() -> Spec { Spec::load(include_bytes!("../../res/ethereum/olympic.json")) }
 
 /// Create a new Frontier mainnet chain spec.
-pub fn new_frontier(dao_rescue: bool) -> Spec {
-	Spec::load(match dao_rescue {
-		true => include_bytes!("../../res/ethereum/frontier_dao_rescue.json"),
-		false => include_bytes!("../../res/ethereum/frontier.json"),
-	})
+pub fn new_frontier() -> Spec {
+	Spec::load(include_bytes!("../../res/ethereum/frontier.json"))
+}
+
+/// Create a new Frontier mainnet chain spec without the DAO hardfork.
+pub fn new_frontier_dogmatic() -> Spec {
+	Spec::load(include_bytes!("../../res/ethereum/frontier-dogmatic.json"))
 }
 
 /// Create a new Frontier chain spec as though it never changes to Homestead.
@@ -46,6 +48,9 @@ pub fn new_frontier_test() -> Spec { Spec::load(include_bytes!("../../res/ethere
 /// Create a new Homestead chain spec as though it never changed from Frontier.
 pub fn new_homestead_test() -> Spec { Spec::load(include_bytes!("../../res/ethereum/homestead_test.json")) }
 
+/// Create a new Frontier/Homestead/DAO chain spec with transition points at #5 and #8.
+pub fn new_daohardfork_test() -> Spec { Spec::load(include_bytes!("../../res/ethereum/daohardfork_test.json")) }
+
 /// Create a new Frontier main net chain spec without genesis accounts.
 pub fn new_mainnet_like() -> Spec { Spec::load(include_bytes!("../../res/ethereum/frontier_like_test.json")) }
 
@@ -89,7 +94,7 @@ mod tests {
 
 	#[test]
 	fn frontier() {
-		let frontier = new_frontier(true);
+		let frontier = new_frontier();
 
 		assert_eq!(frontier.state_root(), H256::from_str("d7f8974fb5ac78d9ac099b9ad5018bedc2ce0a72dad1827a1709da30580f0544").unwrap());
 		let genesis = frontier.genesis_block();

ethcore/src/evm/ext.rs

@@ -18,6 +18,7 @@
 
 use util::common::*;
 use evm::{self, Schedule};
+use types::executed::CallType;
 use env_info::*;
 
 /// Result of externalities create function.
@@ -69,13 +70,15 @@ pub trait Ext {
 	/// and true if subcall was successfull.
 	#[cfg_attr(feature="dev", allow(too_many_arguments))]
 	fn call(&mut self,
-			gas: &U256,
-			sender_address: &Address,
-			receive_address: &Address,
-			value: Option<U256>,
-			data: &[u8],
-			code_address: &Address,
-			output: &mut [u8]) -> MessageCallResult;
+		gas: &U256,
+		sender_address: &Address,
+		receive_address: &Address,
+		value: Option<U256>,
+		data: &[u8],
+		code_address: &Address,
+		output: &mut [u8],
+		call_type: CallType
+	) -> MessageCallResult;
 
 	/// Returns code at given address
 	fn extcode(&self, address: &Address) -> Bytes;

ethcore/src/evm/interpreter.rs

@@ -20,6 +20,7 @@ use common::*;
 use super::instructions as instructions;
 use super::instructions::{Instruction, get_info};
 use std::marker::Copy;
+use types::executed::CallType;
 use evm::{self, MessageCallResult, ContractCreateResult, GasLeft};
 
 #[cfg(not(feature = "evm-debug"))]
@@ -648,16 +649,16 @@ impl Interpreter {
 				});
 
 				// Get sender & receive addresses, check if we have balance
-				let (sender_address, receive_address, has_balance) = match instruction {
+				let (sender_address, receive_address, has_balance, call_type) = match instruction {
 					instructions::CALL => {
 						let has_balance = ext.balance(&params.address) >= value.unwrap();
-						(&params.address, &code_address, has_balance)
+						(&params.address, &code_address, has_balance, CallType::Call)
 					},
 					instructions::CALLCODE => {
 						let has_balance = ext.balance(&params.address) >= value.unwrap();
-						(&params.address, &params.address, has_balance)
+						(&params.address, &params.address, has_balance, CallType::CallCode)
 					},
-					instructions::DELEGATECALL => (&params.sender, &params.address, true),
+					instructions::DELEGATECALL => (&params.sender, &params.address, true, CallType::DelegateCall),
 					_ => panic!(format!("Unexpected instruction {} in CALL branch.", instruction))
 				};
 
@@ -672,7 +673,7 @@ impl Interpreter {
 					// and we don't want to copy
 					let input = unsafe { ::std::mem::transmute(self.mem.read_slice(in_off, in_size)) };
 					let output = self.mem.writeable_slice(out_off, out_size);
-					ext.call(&call_gas, sender_address, receive_address, value, input, &code_address, output)
+					ext.call(&call_gas, sender_address, receive_address, value, input, &code_address, output, call_type)
 				};
 
 				return match call_result {

ethcore/src/evm/schedule.rs

@@ -80,8 +80,6 @@ pub struct Schedule {
 	pub tx_data_non_zero_gas: usize,
 	/// Gas price for copying memory
 	pub copy_gas: usize,
-	/// DAO Rescue softfork block
-	pub reject_dao_transactions: bool,
 }
 
 impl Schedule {
@@ -128,7 +126,6 @@ impl Schedule {
 			tx_data_zero_gas: 4,
 			tx_data_non_zero_gas: 68,
 			copy_gas: 3,	
-			reject_dao_transactions: false,
 		}
 	}
 }

ethcore/src/evm/tests.rs

@@ -15,6 +15,7 @@
 // along with Parity.  If not, see <http://www.gnu.org/licenses/>.
 
 use common::*;
+use types::executed::CallType;
 use evm::{self, Ext, Schedule, Factory, GasLeft, VMType, ContractCreateResult, MessageCallResult};
 use std::fmt::Debug;
 
@@ -36,7 +37,7 @@ struct FakeCall {
 	receive_address: Option<Address>,
 	value: Option<U256>,
 	data: Bytes,
-	code_address: Option<Address>
+	code_address: Option<Address>,
 }
 
 /// Fake externalities test structure.
@@ -119,7 +120,9 @@ impl Ext for FakeExt {
 			value: Option<U256>,
 			data: &[u8],
 			code_address: &Address,
-			_output: &mut [u8]) -> MessageCallResult {
+			_output: &mut [u8],
+			_call_type: CallType
+		) -> MessageCallResult {
 
 		self.calls.insert(FakeCall {
 			call_type: FakeCallType::Call,

ethcore/src/executive.rs

@@ -18,10 +18,11 @@
 use common::*;
 use state::*;
 use engine::*;
+use types::executed::CallType;
 use evm::{self, Ext, Factory, Finalize};
 use externalities::*;
 use substate::*;
-use trace::{Trace, Tracer, NoopTracer, ExecutiveTracer, VMTrace, VMTracer, ExecutiveVMTracer, NoopVMTracer};
+use trace::{FlatTrace, Tracer, NoopTracer, ExecutiveTracer, VMTrace, VMTracer, ExecutiveVMTracer, NoopVMTracer};
 use crossbeam;
 pub use types::executed::{Executed, ExecutionResult};
 
@@ -97,11 +98,11 @@ impl<'a> Executive<'a> {
 		let check = options.check_nonce;
 		match options.tracing {
 			true => match options.vm_tracing {
-				true => self.transact_with_tracer(t, check, ExecutiveTracer::default(), ExecutiveVMTracer::default()),
+				true => self.transact_with_tracer(t, check, ExecutiveTracer::default(), ExecutiveVMTracer::toplevel()),
 				false => self.transact_with_tracer(t, check, ExecutiveTracer::default(), NoopVMTracer),
 			},
 			false => match options.vm_tracing {
-				true => self.transact_with_tracer(t, check, NoopTracer, ExecutiveVMTracer::default()),
+				true => self.transact_with_tracer(t, check, NoopTracer, ExecutiveVMTracer::toplevel()),
 				false => self.transact_with_tracer(t, check, NoopTracer, NoopVMTracer),
 			},
 		}
@@ -173,6 +174,7 @@ impl<'a> Executive<'a> {
 					value: ActionValue::Transfer(t.value),
 					code: Some(t.data.clone()),
 					data: None,
+					call_type: CallType::None,
 				};
 				(self.create(params, &mut substate, &mut tracer, &mut vm_tracer), vec![])
 			},
@@ -187,6 +189,7 @@ impl<'a> Executive<'a> {
 					value: ActionValue::Transfer(t.value),
 					code: self.state.code(address),
 					data: Some(t.data.clone()),
+					call_type: CallType::Call,
 				};
 				// TODO: move output upstream
 				let mut out = vec![];
@@ -195,7 +198,7 @@ impl<'a> Executive<'a> {
 		};
 
 		// finalize here!
-		Ok(try!(self.finalize(t, substate, gas_left, output, tracer.traces().pop(), vm_tracer.drain())))
+		Ok(try!(self.finalize(t, substate, gas_left, output, tracer.traces(), vm_tracer.drain())))
 	}
 
 	fn exec_vm<T, V>(
@@ -248,8 +251,6 @@ impl<'a> Executive<'a> {
 		}
 		trace!("Executive::call(params={:?}) self.env_info={:?}", params, self.info);
 
-		let delegate_call = params.code_address != params.address;
-
 		if self.engine.is_builtin(&params.code_address) {
 			// if destination is builtin, try to execute it
 
@@ -275,20 +276,15 @@ impl<'a> Executive<'a> {
 							trace_info,
 							cost,
 							trace_output,
-							self.depth,
-							vec![],
-							delegate_call
+							vec![]
 						);
 					}
-
 					Ok(params.gas - cost)
 				},
 				// just drain the whole gas
 				false => {
 					self.state.revert_snapshot();
-
-					tracer.trace_failed_call(trace_info, self.depth, vec![], delegate_call);
-
+					tracer.trace_failed_call(trace_info, vec![]);
 					Err(evm::Error::OutOfGas)
 				}
 			}
@@ -320,11 +316,9 @@ impl<'a> Executive<'a> {
 						trace_info,
 						gas - gas_left,
 						trace_output,
-						self.depth,
-						traces,
-						delegate_call
+						traces
 					),
-					_ => tracer.trace_failed_call(trace_info, self.depth, traces, delegate_call),
+					_ => tracer.trace_failed_call(trace_info, traces),
 				};
 
 				trace!(target: "executive", "substate={:?}; unconfirmed_substate={:?}\n", substate, unconfirmed_substate);
@@ -336,7 +330,7 @@ impl<'a> Executive<'a> {
 				// otherwise it's just a basic transaction, only do tracing, if necessary.
 				self.state.clear_snapshot();
 
-				tracer.trace_call(trace_info, U256::zero(), trace_output, self.depth, vec![], delegate_call);
+				tracer.trace_call(trace_info, U256::zero(), trace_output, vec![]);
 				Ok(params.gas)
 			}
 		}
@@ -387,10 +381,9 @@ impl<'a> Executive<'a> {
 				gas - gas_left,
 				trace_output,
 				created,
-				self.depth,
 				subtracer.traces()
 			),
-			_ => tracer.trace_failed_create(trace_info, self.depth, subtracer.traces())
+			_ => tracer.trace_failed_create(trace_info, subtracer.traces())
 		};
 
 		self.enact_result(&res, substate, unconfirmed_substate);
@@ -404,7 +397,7 @@ impl<'a> Executive<'a> {
 		substate: Substate,
 		result: evm::Result<U256>,
 		output: Bytes,
-		trace: Option<Trace>,
+		trace: Vec<FlatTrace>,
 		vm_trace: Option<VMTrace>
 	) -> ExecutionResult {
 		let schedule = self.engine.schedule(self.info);
@@ -496,8 +489,9 @@ mod tests {
 	use substate::*;
 	use tests::helpers::*;
 	use trace::trace;
-	use trace::{Trace, Tracer, NoopTracer, ExecutiveTracer};
+	use trace::{FlatTrace, Tracer, NoopTracer, ExecutiveTracer};
 	use trace::{VMTrace, VMOperation, VMExecutedOperation, MemoryDiff, StorageDiff, VMTracer, NoopVMTracer, ExecutiveVMTracer};
+	use types::executed::CallType;
 
 	#[test]
 	fn test_contract_address() {
@@ -631,6 +625,7 @@ mod tests {
 		params.gas = U256::from(100_000);
 		params.code = Some(code.clone());
 		params.value = ActionValue::Transfer(U256::from(100));
+		params.call_type = CallType::Call;
 		let mut state_result = get_temp_state();
 		let mut state = state_result.reference_mut();
 		state.add_balance(&sender, &U256::from(100));
@@ -638,7 +633,7 @@ mod tests {
 		let engine = TestEngine::new(5);
 		let mut substate = Substate::new();
 		let mut tracer = ExecutiveTracer::default();
-		let mut vm_tracer = ExecutiveVMTracer::default();
+		let mut vm_tracer = ExecutiveVMTracer::toplevel();
 
 		let gas_left = {
 			let mut ex = Executive::new(&mut state, &info, &engine, &factory);
@@ -648,35 +643,37 @@ mod tests {
 
 		assert_eq!(gas_left, U256::from(44_752));
 
-		let expected_trace = vec![ Trace {
-			depth: 0,
+		let expected_trace = vec![FlatTrace {
+			trace_address: Default::default(),
+			subtraces: 1,
 			action: trace::Action::Call(trace::Call {
 				from: "cd1722f3947def4cf144679da39c4c32bdc35681".into(),
 				to: "b010143a42d5980c7e5ef0e4a4416dc098a4fed3".into(),
 				value: 100.into(),
 				gas: 100000.into(),
 				input: vec![],
+				call_type: CallType::Call,
 			}),
 			result: trace::Res::Call(trace::CallResult {
 				gas_used: U256::from(55_248),
 				output: vec![],
 			}),
-			subs: vec![Trace {
-				depth: 1,
-				action: trace::Action::Create(trace::Create {
-					from: "b010143a42d5980c7e5ef0e4a4416dc098a4fed3".into(),
-					value: 23.into(),
-					gas: 67979.into(),
-					init: vec![96, 16, 128, 96, 12, 96, 0, 57, 96, 0, 243, 0, 96, 0, 53, 84, 21, 96, 9, 87, 0, 91, 96, 32, 53, 96, 0, 53, 85]
-				}),
-				result: trace::Res::Create(trace::CreateResult {
-					gas_used: U256::from(3224),
-					address: Address::from_str("c6d80f262ae5e0f164e5fde365044d7ada2bfa34").unwrap(),
-					code: vec![96, 0, 53, 84, 21, 96, 9, 87, 0, 91, 96, 32, 53, 96, 0, 53]
-				}),
-				subs: vec![]
-			}]
+		}, FlatTrace {
+			trace_address: vec![0].into_iter().collect(),
+			subtraces: 0,
+			action: trace::Action::Create(trace::Create {
+				from: "b010143a42d5980c7e5ef0e4a4416dc098a4fed3".into(),
+				value: 23.into(),
+				gas: 67979.into(),
+				init: vec![96, 16, 128, 96, 12, 96, 0, 57, 96, 0, 243, 0, 96, 0, 53, 84, 21, 96, 9, 87, 0, 91, 96, 32, 53, 96, 0, 53, 85]
+			}),
+			result: trace::Res::Create(trace::CreateResult {
+				gas_used: U256::from(3224),
+				address: Address::from_str("c6d80f262ae5e0f164e5fde365044d7ada2bfa34").unwrap(),
+				code: vec![96, 0, 53, 84, 21, 96, 9, 87, 0, 91, 96, 32, 53, 96, 0, 53]
+			}),
 		}];
+
 		assert_eq!(tracer.traces(), expected_trace);
 
 		let expected_vm_trace = VMTrace {
@@ -695,7 +692,7 @@ mod tests {
 			],
 			subs: vec![
 				VMTrace {
-					parent_step: 7,
+					parent_step: 6,
 					code: vec![96, 16, 128, 96, 12, 96, 0, 57, 96, 0, 243, 0, 96, 0, 53, 84, 21, 96, 9, 87, 0, 91, 96, 32, 53, 96, 0, 53, 85],
 					operations: vec![
 						VMOperation { pc: 0, instruction: 96, gas_cost: 3.into(), executed: Some(VMExecutedOperation { gas_used: 67976.into(), stack_push: vec_into![16], mem_diff: None, store_diff: None }) },
@@ -745,7 +742,7 @@ mod tests {
 		let engine = TestEngine::new(5);
 		let mut substate = Substate::new();
 		let mut tracer = ExecutiveTracer::default();
-		let mut vm_tracer = ExecutiveVMTracer::default();
+		let mut vm_tracer = ExecutiveVMTracer::toplevel();
 
 		let gas_left = {
 			let mut ex = Executive::new(&mut state, &info, &engine, &factory);
@@ -754,8 +751,9 @@ mod tests {
 
 		assert_eq!(gas_left, U256::from(96_776));
 
-		let expected_trace = vec![Trace {
-			depth: 0,
+		let expected_trace = vec![FlatTrace {
+			trace_address: Default::default(),
+			subtraces: 0,
 			action: trace::Action::Create(trace::Create {
 				from: params.sender,
 				value: 100.into(),
@@ -767,8 +765,8 @@ mod tests {
 				address: params.address,
 				code: vec![96, 0, 53, 84, 21, 96, 9, 87, 0, 91, 96, 32, 53, 96, 0, 53]
 			}),
-			subs: vec![]
 		}];
+
 		assert_eq!(tracer.traces(), expected_trace);
 
 		let expected_vm_trace = VMTrace {

ethcore/src/externalities.rs

@@ -21,6 +21,7 @@ use engine::*;
 use executive::*;
 use evm::{self, Schedule, Ext, ContractCreateResult, MessageCallResult, Factory};
 use substate::*;
+use types::executed::CallType;
 use trace::{Tracer, VMTracer};
 
 /// Policy for handling output data on `RETURN` opcode.
@@ -148,6 +149,7 @@ impl<'a, T, V> Ext for Externalities<'a, T, V> where T: 'a + Tracer, V: 'a + VMT
 			value: ActionValue::Transfer(*value),
 			code: Some(code.to_vec()),
 			data: None,
+			call_type: CallType::None,
 		};
 
 		self.state.inc_nonce(&self.origin_info.address);
@@ -170,7 +172,8 @@ impl<'a, T, V> Ext for Externalities<'a, T, V> where T: 'a + Tracer, V: 'a + VMT
 		value: Option<U256>,
 		data: &[u8],
 		code_address: &Address,
-		output: &mut [u8]
+		output: &mut [u8],
+		call_type: CallType
 	) -> MessageCallResult {
 		trace!(target: "externalities", "call");
 
@@ -184,6 +187,7 @@ impl<'a, T, V> Ext for Externalities<'a, T, V> where T: 'a + Tracer, V: 'a + VMT
 			gas_price: self.origin_info.gas_price,
 			code: self.state.code(code_address),
 			data: Some(data.to_vec()),
+			call_type: call_type,
 		};
 
 		if let Some(value) = value {
@@ -262,6 +266,8 @@ impl<'a, T, V> Ext for Externalities<'a, T, V> where T: 'a + Tracer, V: 'a + VMT
 			trace!("Suiciding {} -> {} (xfer: {})", address, refund_address, balance);
 			self.state.transfer_balance(&address, refund_address, &balance);
 		}
+
+		self.tracer.trace_suicide(address, balance, refund_address.clone());
 		self.substate.suicides.insert(address);
 	}
 
@@ -300,6 +306,7 @@ mod tests {
 	use tests::helpers::*;
 	use super::*;
 	use trace::{NoopTracer, NoopVMTracer};
+	use types::executed::CallType;
 
 	fn get_test_origin() -> OriginInfo {
 		OriginInfo {
@@ -319,7 +326,6 @@ mod tests {
 			last_hashes: vec![],
 			gas_used: 0.into(),
 			gas_limit: 0.into(),
-			dao_rescue_block_gas_limit: None,
 		}
 	}
 
@@ -419,7 +425,9 @@ mod tests {
 			Some(U256::from_str("0000000000000000000000000000000000000000000000000000000000150000").unwrap()),
 			&[],
 			&Address::new(),
-			&mut output);
+			&mut output,
+			CallType::Call
+		);
 	}
 
 	#[test]

ethcore/src/json_tests/chain.rs

@@ -22,6 +22,7 @@ use tests::helpers::*;
 use devtools::*;
 use spec::Genesis;
 use ethjson;
+use ethjson::blockchain::BlockChain;
 use miner::Miner;
 
 pub fn json_chain_test(json_data: &[u8], era: ChainEra) -> Vec<String> {
@@ -41,20 +42,29 @@ pub fn json_chain_test(json_data: &[u8], era: ChainEra) -> Vec<String> {
 
 			flush!("   - {}...", name);
 
-			let mut spec = match era {
-				ChainEra::Frontier => ethereum::new_frontier_test(),
-				ChainEra::Homestead => ethereum::new_homestead_test(),
+			let spec = |blockchain: &BlockChain| {
+				let genesis = Genesis::from(blockchain.genesis());
+				let state = From::from(blockchain.pre_state.clone());
+				let mut spec = match era {
+					ChainEra::Frontier => ethereum::new_frontier_test(),
+					ChainEra::Homestead => ethereum::new_homestead_test(),
+					ChainEra::DaoHardfork => ethereum::new_daohardfork_test(),
+				};
+				spec.set_genesis_state(state);
+				spec.overwrite_genesis_params(genesis);
+				assert!(spec.is_state_root_valid());
+				spec
 			};
 
-			let genesis = Genesis::from(blockchain.genesis());
-			let state = From::from(blockchain.pre_state.clone());
-			spec.set_genesis_state(state);
-			spec.overwrite_genesis_params(genesis);
-			assert!(spec.is_state_root_valid());
-
 			let temp = RandomTempPath::new();
 			{
-				let client = Client::new(ClientConfig::default(), spec, temp.as_path(), Arc::new(Miner::default()), IoChannel::disconnected()).unwrap();
+				let client = Client::new(
+					ClientConfig::default(),
+					spec(&blockchain),
+					temp.as_path(),
+					Arc::new(Miner::with_spec(spec(&blockchain))),
+					IoChannel::disconnected()
+				).unwrap();
 				for b in &blockchain.blocks_rlp() {
 					if Block::is_good(&b) {
 						let _ = client.import_block(b.clone());
@@ -75,26 +85,43 @@ pub fn json_chain_test(json_data: &[u8], era: ChainEra) -> Vec<String> {
 	failed
 }
 
-fn do_json_test(json_data: &[u8]) -> Vec<String> {
-	json_chain_test(json_data, ChainEra::Frontier)
+mod frontier_era_tests {
+	use tests::helpers::*;
+	use super::json_chain_test;
+
+	fn do_json_test(json_data: &[u8]) -> Vec<String> {
+		json_chain_test(json_data, ChainEra::Frontier)
+	}
+
+	declare_test!{BlockchainTests_bcBlockGasLimitTest, "BlockchainTests/bcBlockGasLimitTest"}
+	declare_test!{BlockchainTests_bcForkBlockTest, "BlockchainTests/bcForkBlockTest"}
+	declare_test!{BlockchainTests_bcForkStressTest, "BlockchainTests/bcForkStressTest"}
+	declare_test!{BlockchainTests_bcForkUncle, "BlockchainTests/bcForkUncle"}
+	declare_test!{BlockchainTests_bcGasPricerTest, "BlockchainTests/bcGasPricerTest"}
+	declare_test!{BlockchainTests_bcInvalidHeaderTest, "BlockchainTests/bcInvalidHeaderTest"}
+	// TODO [ToDr] Ignored because of incorrect JSON (https://github.com/ethereum/tests/pull/113)
+	declare_test!{ignore => BlockchainTests_bcInvalidRLPTest, "BlockchainTests/bcInvalidRLPTest"}
+	declare_test!{BlockchainTests_bcMultiChainTest, "BlockchainTests/bcMultiChainTest"}
+	declare_test!{BlockchainTests_bcRPC_API_Test, "BlockchainTests/bcRPC_API_Test"}
+	declare_test!{BlockchainTests_bcStateTest, "BlockchainTests/bcStateTest"}
+	declare_test!{BlockchainTests_bcTotalDifficultyTest, "BlockchainTests/bcTotalDifficultyTest"}
+	declare_test!{BlockchainTests_bcUncleHeaderValiditiy, "BlockchainTests/bcUncleHeaderValiditiy"}
+	declare_test!{BlockchainTests_bcUncleTest, "BlockchainTests/bcUncleTest"}
+	declare_test!{BlockchainTests_bcValidBlockTest, "BlockchainTests/bcValidBlockTest"}
+	declare_test!{BlockchainTests_bcWalletTest, "BlockchainTests/bcWalletTest"}
+
+	declare_test!{BlockchainTests_RandomTests_bl10251623GO, "BlockchainTests/RandomTests/bl10251623GO"}
+	declare_test!{BlockchainTests_RandomTests_bl201507071825GO, "BlockchainTests/RandomTests/bl201507071825GO"}
 }
 
-declare_test!{BlockchainTests_bcBlockGasLimitTest, "BlockchainTests/bcBlockGasLimitTest"}
-declare_test!{BlockchainTests_bcForkBlockTest, "BlockchainTests/bcForkBlockTest"}
-declare_test!{BlockchainTests_bcForkStressTest, "BlockchainTests/bcForkStressTest"}
-declare_test!{BlockchainTests_bcForkUncle, "BlockchainTests/bcForkUncle"}
-declare_test!{BlockchainTests_bcGasPricerTest, "BlockchainTests/bcGasPricerTest"}
-declare_test!{BlockchainTests_bcInvalidHeaderTest, "BlockchainTests/bcInvalidHeaderTest"}
-// TODO [ToDr] Ignored because of incorrect JSON (https://github.com/ethereum/tests/pull/113)
-declare_test!{ignore => BlockchainTests_bcInvalidRLPTest, "BlockchainTests/bcInvalidRLPTest"}
-declare_test!{BlockchainTests_bcMultiChainTest, "BlockchainTests/bcMultiChainTest"}
-declare_test!{BlockchainTests_bcRPC_API_Test, "BlockchainTests/bcRPC_API_Test"}
-declare_test!{BlockchainTests_bcStateTest, "BlockchainTests/bcStateTest"}
-declare_test!{BlockchainTests_bcTotalDifficultyTest, "BlockchainTests/bcTotalDifficultyTest"}
-declare_test!{BlockchainTests_bcUncleHeaderValiditiy, "BlockchainTests/bcUncleHeaderValiditiy"}
-declare_test!{BlockchainTests_bcUncleTest, "BlockchainTests/bcUncleTest"}
-declare_test!{BlockchainTests_bcValidBlockTest, "BlockchainTests/bcValidBlockTest"}
-declare_test!{BlockchainTests_bcWalletTest, "BlockchainTests/bcWalletTest"}
+mod daohardfork_tests {
+	use tests::helpers::*;
+	use super::json_chain_test;
 
-declare_test!{BlockchainTests_RandomTests_bl10251623GO, "BlockchainTests/RandomTests/bl10251623GO"}
-declare_test!{BlockchainTests_RandomTests_bl201507071825GO, "BlockchainTests/RandomTests/bl201507071825GO"}
+	fn do_json_test(json_data: &[u8]) -> Vec<String> {
+		json_chain_test(json_data, ChainEra::DaoHardfork)
+	}
+
+	declare_test!{BlockchainTests_TestNetwork_bcSimpleTransitionTest, "BlockchainTests/TestNetwork/bcSimpleTransitionTest"}
+	declare_test!{BlockchainTests_TestNetwork_bcTheDaoTest, "BlockchainTests/TestNetwork/bcTheDaoTest"}
+}

ethcore/src/json_tests/executive.rs

@@ -22,6 +22,7 @@ use evm;
 use evm::{Schedule, Ext, Factory, Finalize, VMType, ContractCreateResult, MessageCallResult};
 use externalities::*;
 use substate::*;
+use types::executed::CallType;
 use tests::helpers::*;
 use ethjson;
 use trace::{Tracer, NoopTracer};
@@ -109,13 +110,15 @@ impl<'a, T, V> Ext for TestExt<'a, T, V> where T: Tracer, V: VMTracer {
 	}
 
 	fn call(&mut self,
-			gas: &U256,
-			_sender_address: &Address,
-			receive_address: &Address,
-			value: Option<U256>,
-			data: &[u8],
-			_code_address: &Address,
-			_output: &mut [u8]) -> MessageCallResult {
+		gas: &U256,
+		_sender_address: &Address,
+		receive_address: &Address,
+		value: Option<U256>,
+		data: &[u8],
+		_code_address: &Address,
+		_output: &mut [u8],
+		_call_type: CallType
+	) -> MessageCallResult {
 		self.callcreates.push(CallCreate {
 			data: data.to_vec(),
 			destination: Some(receive_address.clone()),

ethcore/src/json_tests/state.rs

@@ -30,8 +30,9 @@ pub fn json_chain_test(json_data: &[u8], era: ChainEra) -> Vec<String> {
 	let mut failed = Vec::new();
 	let engine = match era {
 		ChainEra::Frontier => ethereum::new_mainnet_like().engine,
-		ChainEra::Homestead => ethereum::new_homestead_test().engine
-	};
+		ChainEra::Homestead => ethereum::new_homestead_test().engine,
+		ChainEra::DaoHardfork => ethereum::new_daohardfork_test().engine,
+};
 
 	for (name, test) in tests.into_iter() {
 		let mut fail = false;

ethcore/src/lib.rs

@@ -91,6 +91,8 @@ extern crate ethjson;
 extern crate bloomchain;
 #[macro_use] extern crate ethcore_ipc as ipc;
 extern crate rayon;
+extern crate hyper;
+extern crate ethash;
 pub extern crate ethstore;
 
 #[cfg(test)] extern crate ethcore_devtools as devtools;

ethcore/src/miner/external.rs

@@ -15,9 +15,9 @@
 // along with Parity.  If not, see <http://www.gnu.org/licenses/>.
 
 use std::collections::HashMap;
-use std::sync::{Arc, RwLock};
-use util::numbers::U256;
-use util::hash::H256;
+use std::sync::{Arc};
+use std::time::{Instant, Duration};
+use util::{Mutex, U256, H256};
 
 /// External miner interface.
 pub trait ExternalMinerService: Send + Sync {
@@ -26,50 +26,50 @@ pub trait ExternalMinerService: Send + Sync {
 
 	/// Total hashrate.
 	fn hashrate(&self) -> U256;
-
-	/// Returns true if external miner is mining.
-	fn is_mining(&self) -> bool;
 }
 
 /// External Miner.
 pub struct ExternalMiner {
-	hashrates: Arc<RwLock<HashMap<H256, U256>>>,
+	hashrates: Arc<Mutex<HashMap<H256, (Instant, U256)>>>,
 }
 
 impl Default for ExternalMiner {
 	fn default() -> Self {
 		ExternalMiner {
-			hashrates: Arc::new(RwLock::new(HashMap::new())),
+			hashrates: Arc::new(Mutex::new(HashMap::new())),
 		}
 	}
 }
 
 impl ExternalMiner {
 	/// Creates new external miner with prefilled hashrates.
-	pub fn new(hashrates: Arc<RwLock<HashMap<H256, U256>>>) -> Self {
+	pub fn new(hashrates: Arc<Mutex<HashMap<H256, (Instant, U256)>>>) -> Self {
 		ExternalMiner {
-			hashrates: hashrates
+			hashrates: hashrates,
 		}
 	}
 }
 
+const ENTRY_TIMEOUT: u64 = 2;
+
 impl ExternalMinerService for ExternalMiner {
 	fn submit_hashrate(&self, hashrate: U256, id: H256) {
-		self.hashrates.write().unwrap().insert(id, hashrate);
+		self.hashrates.lock().unwrap().insert(id, (Instant::now() + Duration::from_secs(ENTRY_TIMEOUT), hashrate));
 	}
 
 	fn hashrate(&self) -> U256 {
-		self.hashrates.read().unwrap().iter().fold(U256::from(0), |sum, (_, v)| sum + *v)
-	}
-
-	fn is_mining(&self) -> bool {
-		!self.hashrates.read().unwrap().is_empty()
+		let mut hashrates = self.hashrates.lock().unwrap();
+		let h = hashrates.drain().filter(|&(_, (t, _))| t > Instant::now()).collect();
+		*hashrates = h;
+		hashrates.iter().fold(U256::from(0), |sum, (_, &(_, v))| sum + v)
 	}
 }
 
 #[cfg(test)]
 mod tests {
 	use super::*;
+	use std::thread::sleep;
+	use std::time::Duration;
 	use util::{H256, U256};
 
 	fn miner() -> ExternalMiner {
@@ -77,16 +77,18 @@ mod tests {
 	}
 
 	#[test]
-	fn should_return_that_is_mining_if_there_is_at_least_one_entry() {
+	fn it_should_forget_old_hashrates() {
 		// given
 		let m = miner();
-		assert_eq!(m.is_mining(), false);
+		assert_eq!(m.hashrate(), U256::from(0));
+		m.submit_hashrate(U256::from(10), H256::from(1));
+		assert_eq!(m.hashrate(), U256::from(10));
 
 		// when
-		m.submit_hashrate(U256::from(10), H256::from(1));
+		sleep(Duration::from_secs(3));
 
 		// then
-		assert_eq!(m.is_mining(), true);
+		assert_eq!(m.hashrate(), U256::from(0));
 	}
 
 	#[test]

ethcore/src/miner/miner.rs

@@ -15,85 +15,133 @@
 // along with Parity.  If not, see <http://www.gnu.org/licenses/>.
 
 use rayon::prelude::*;
-use std::sync::atomic::AtomicBool;
+use std::time::{Instant, Duration};
 
 use util::*;
+use util::Colour::White;
 use account_provider::AccountProvider;
 use views::{BlockView, HeaderView};
+use state::State;
 use client::{MiningBlockChainClient, Executive, Executed, EnvInfo, TransactOptions, BlockID, CallAnalytics};
-use block::{ClosedBlock, IsBlock};
+use block::{ClosedBlock, IsBlock, Block};
 use error::*;
 use transaction::SignedTransaction;
 use receipt::{Receipt};
 use spec::Spec;
 use engine::Engine;
 use miner::{MinerService, MinerStatus, TransactionQueue, AccountDetails, TransactionImportResult, TransactionOrigin};
+use miner::work_notify::WorkPoster;
+
+/// Different possible definitions for pending transaction set.
+#[derive(Debug)]
+pub enum PendingSet {
+	/// Always just the transactions in the queue. These have had only cheap checks.
+	AlwaysQueue,
+	/// Always just the transactions in the sealing block. These have had full checks but
+	/// may be empty if the node is not actively mining or has force_sealing enabled.
+	AlwaysSealing,
+	/// Try the sealing block, but if it is not currently sealing, fallback to the queue.
+	SealingOrElseQueue,
+}
+
+/// Configures the behaviour of the miner.
+#[derive(Debug)]
+pub struct MinerOptions {
+	/// URLs to notify when there is new work.
+	pub new_work_notify: Vec<String>,
+	/// Force the miner to reseal, even when nobody has asked for work.
+	pub force_sealing: bool,
+	/// Reseal on receipt of new external transactions.
+	pub reseal_on_external_tx: bool,
+	/// Reseal on receipt of new local transactions.
+	pub reseal_on_own_tx: bool,
+	/// Minimum period between transaction-inspired reseals.
+	pub reseal_min_period: Duration,
+	/// Maximum amount of gas to bother considering for block insertion.
+	pub tx_gas_limit: U256,
+	/// Maximum size of the transaction queue.
+	pub tx_queue_size: usize,
+	/// Whether we should fallback to providing all the queue's transactions or just pending.
+	pub pending_set: PendingSet,
+	/// How many historical work packages can we store before running out?
+	pub work_queue_size: usize,
+	/// Can we submit two different solutions for the same block and expect both to result in an import?
+	pub enable_resubmission: bool,
+}
+
+impl Default for MinerOptions {
+	fn default() -> Self {
+		MinerOptions {
+			new_work_notify: vec![],
+			force_sealing: false,
+			reseal_on_external_tx: true,
+			reseal_on_own_tx: true,
+			tx_gas_limit: !U256::zero(),
+			tx_queue_size: 1024,
+			pending_set: PendingSet::AlwaysQueue,
+			reseal_min_period: Duration::from_secs(0),
+			work_queue_size: 20,
+			enable_resubmission: true,
+		}
+	}
+}
+
+struct SealingWork {
+	queue: UsingQueue<ClosedBlock>,
+	enabled: bool,
+}
 
 /// Keeps track of transactions using priority queue and holds currently mined block.
 pub struct Miner {
 	// NOTE [ToDr]  When locking always lock in this order!
 	transaction_queue: Mutex<TransactionQueue>,
-	sealing_work: Mutex<UsingQueue<ClosedBlock>>,
-
-	// for sealing...
-	force_sealing: bool,
-	sealing_enabled: AtomicBool,
+	sealing_work: Mutex<SealingWork>,
+	next_allowed_reseal: Mutex<Instant>,
 	sealing_block_last_request: Mutex<u64>,
-	gas_floor_target: RwLock<U256>,
+	// for sealing...
+	options: MinerOptions,
+	gas_range_target: RwLock<(U256, U256)>,
 	author: RwLock<Address>,
 	extra_data: RwLock<Bytes>,
 	spec: Spec,
 
 	accounts: Option<Arc<AccountProvider>>,
-}
-
-impl Default for Miner {
-	fn default() -> Miner {
-		Miner {
-			transaction_queue: Mutex::new(TransactionQueue::new()),
-			force_sealing: false,
-			sealing_enabled: AtomicBool::new(false),
-			sealing_block_last_request: Mutex::new(0),
-			sealing_work: Mutex::new(UsingQueue::new(5)),
-			gas_floor_target: RwLock::new(U256::zero()),
-			author: RwLock::new(Address::default()),
-			extra_data: RwLock::new(Vec::new()),
-			accounts: None,
-			spec: Spec::new_test(),
-		}
-	}
+	work_poster: Option<WorkPoster>,
 }
 
 impl Miner {
-	/// Creates new instance of miner
-	pub fn new(force_sealing: bool, spec: Spec) -> Arc<Miner> {
-		Arc::new(Miner {
+	/// Creates new instance of miner without accounts, but with given spec.
+	pub fn with_spec(spec: Spec) -> Miner {
+		Miner {
 			transaction_queue: Mutex::new(TransactionQueue::new()),
-			force_sealing: force_sealing,
-			sealing_enabled: AtomicBool::new(force_sealing),
+			options: Default::default(),
+			next_allowed_reseal: Mutex::new(Instant::now()),
 			sealing_block_last_request: Mutex::new(0),
-			sealing_work: Mutex::new(UsingQueue::new(5)),
-			gas_floor_target: RwLock::new(U256::zero()),
+			sealing_work: Mutex::new(SealingWork{queue: UsingQueue::new(20), enabled: false}),
+			gas_range_target: RwLock::new((U256::zero(), U256::zero())),
 			author: RwLock::new(Address::default()),
 			extra_data: RwLock::new(Vec::new()),
 			accounts: None,
 			spec: spec,
-		})
+			work_poster: None,
+		}
 	}
 
 	/// Creates new instance of miner
-	pub fn with_accounts(force_sealing: bool, spec: Spec, accounts: Arc<AccountProvider>) -> Arc<Miner> {
+	pub fn new(options: MinerOptions, spec: Spec, accounts: Option<Arc<AccountProvider>>) -> Arc<Miner> {
+		let work_poster = if !options.new_work_notify.is_empty() { Some(WorkPoster::new(&options.new_work_notify)) } else { None };
 		Arc::new(Miner {
-			transaction_queue: Mutex::new(TransactionQueue::new()),
-			force_sealing: force_sealing,
-			sealing_enabled: AtomicBool::new(force_sealing),
+			transaction_queue: Mutex::new(TransactionQueue::with_limits(options.tx_queue_size, options.tx_gas_limit)),
+			next_allowed_reseal: Mutex::new(Instant::now()),
 			sealing_block_last_request: Mutex::new(0),
-			sealing_work: Mutex::new(UsingQueue::new(5)),
-			gas_floor_target: RwLock::new(U256::zero()),
+			sealing_work: Mutex::new(SealingWork{queue: UsingQueue::new(options.work_queue_size), enabled: options.force_sealing || !options.new_work_notify.is_empty()}),
+			gas_range_target: RwLock::new((U256::zero(), U256::zero())),
 			author: RwLock::new(Address::default()),
 			extra_data: RwLock::new(Vec::new()),
-			accounts: Some(accounts),
+			options: options,
+			accounts: accounts,
 			spec: spec,
+			work_poster: work_poster,
 		})
 	}
 
@@ -101,15 +149,30 @@ impl Miner {
 		self.spec.engine.deref()
 	}
 
+	fn forced_sealing(&self) -> bool {
+		self.options.force_sealing || !self.options.new_work_notify.is_empty()
+	}
+
+	/// Get `Some` `clone()` of the current pending block's state or `None` if we're not sealing.
+	pub fn pending_state(&self) -> Option<State> {
+		self.sealing_work.lock().unwrap().queue.peek_last_ref().map(|b| b.block().fields().state.clone())
+	}
+
+	/// Get `Some` `clone()` of the current pending block's state or `None` if we're not sealing.
+	pub fn pending_block(&self) -> Option<Block> {
+		self.sealing_work.lock().unwrap().queue.peek_last_ref().map(|b| b.base().clone())
+	}
+
 	/// Prepares new block for sealing including top transactions from queue.
 	#[cfg_attr(feature="dev", allow(match_same_arms))]
 	#[cfg_attr(feature="dev", allow(cyclomatic_complexity))]
 	fn prepare_sealing(&self, chain: &MiningBlockChainClient) {
 		trace!(target: "miner", "prepare_sealing: entering");
 
-		let (transactions, mut open_block) = {
+		let (transactions, mut open_block, original_work_hash) = {
 			let transactions = {self.transaction_queue.lock().unwrap().top_transactions()};
 			let mut sealing_work = self.sealing_work.lock().unwrap();
+			let last_work_hash = sealing_work.queue.peek_last_ref().map(|pb| pb.block().fields().header.hash());
 			let best_hash = chain.best_block_header().sha3();
 /*
 			// check to see if last ClosedBlock in would_seals is actually same parent block.
@@ -119,7 +182,7 @@ impl Miner {
 			//   otherwise, leave everything alone.
 			// otherwise, author a fresh block.
 */
-			let open_block = match sealing_work.pop_if(|b| b.block().fields().header.parent_hash() == &best_hash) {
+			let open_block = match sealing_work.queue.pop_if(|b| b.block().fields().header.parent_hash() == &best_hash) {
 				Some(old_block) => {
 					trace!(target: "miner", "Already have previous work; updating and returning");
 					// add transactions to old_block
@@ -131,12 +194,12 @@ impl Miner {
 					trace!(target: "miner", "No existing work - making new block");
 					chain.prepare_open_block(
 						self.author(),
-						self.gas_floor_target(),
+						(self.gas_floor_target(), self.gas_ceil_target()),
 						self.extra_data()
 					)
 				}
 			};
-			(transactions, open_block)
+			(transactions, open_block, last_work_hash)
 		};
 
 		let mut invalid_transactions = HashSet::new();
@@ -146,17 +209,23 @@ impl Miner {
 			let hash = tx.hash();
 			match open_block.push_transaction(tx, None) {
 				Err(Error::Execution(ExecutionError::BlockGasLimitReached { gas_limit, gas_used, .. })) => {
-					trace!(target: "miner", "Skipping adding transaction to block because of gas limit: {:?}", hash);
+					debug!(target: "miner", "Skipping adding transaction to block because of gas limit: {:?}", hash);
 					// Exit early if gas left is smaller then min_tx_gas
 					let min_tx_gas: U256 = 21000.into();	// TODO: figure this out properly.
 					if gas_limit - gas_used < min_tx_gas {
 						break;
 					}
 				},
-				Err(Error::Transaction(TransactionError::AlreadyImported)) => {}	// already have transaction - ignore
+				// Invalid nonce error can happen only if previous transaction is skipped because of gas limit.
+				// If there is errornous state of transaction queue it will be fixed when next block is imported.
+				Err(Error::Execution(ExecutionError::InvalidNonce { .. })) => {
+					debug!(target: "miner", "Skipping adding transaction to block because of invalid nonce: {:?}", hash);
+				},
+				// already have transaction - ignore
+				Err(Error::Transaction(TransactionError::AlreadyImported)) => {},
 				Err(e) => {
 					invalid_transactions.insert(hash);
-					trace!(target: "miner",
+					debug!(target: "miner",
 						   "Error adding transaction to block: number={}. transaction_hash={:?}, Error: {:?}",
 						   block_number, hash, e);
 				},
@@ -202,13 +271,31 @@ impl Miner {
 			}
 		}
 
-		let mut sealing_work = self.sealing_work.lock().unwrap();
-		if sealing_work.peek_last_ref().map_or(true, |pb| pb.block().fields().header.hash() != block.block().fields().header.hash()) {
-			trace!(target: "miner", "Pushing a new, refreshed or borrowed pending {}...", block.block().fields().header.hash());
-			sealing_work.push(block);
+		let (work, is_new) = {
+			let mut sealing_work = self.sealing_work.lock().unwrap();
+			let last_work_hash = sealing_work.queue.peek_last_ref().map(|pb| pb.block().fields().header.hash());
+			trace!(target: "miner", "Checking whether we need to reseal: orig={:?} last={:?}, this={:?}", original_work_hash, last_work_hash, block.block().fields().header.hash());
+			let (work, is_new) = if last_work_hash.map_or(true, |h| h != block.block().fields().header.hash()) {
+				trace!(target: "miner", "Pushing a new, refreshed or borrowed pending {}...", block.block().fields().header.hash());
+				let pow_hash = block.block().fields().header.hash();
+				let number = block.block().fields().header.number();
+				let difficulty = *block.block().fields().header.difficulty();
+				let is_new = original_work_hash.map_or(true, |h| block.block().fields().header.hash() != h);
+				sealing_work.queue.push(block);
+				// If push notifications are enabled we assume all work items are used.
+				if self.work_poster.is_some() && is_new {
+					sealing_work.queue.use_last_ref();
+				}
+				(Some((pow_hash, difficulty, number)), is_new)
+			} else {
+				(None, false)
+			};
+			trace!(target: "miner", "prepare_sealing: leaving (last={:?})", sealing_work.queue.peek_last_ref().map(|b| b.block().fields().header.hash()));
+			(work, is_new)
+		};
+		if is_new {
+			work.map(|(pow_hash, difficulty, number)| self.work_poster.as_ref().map(|ref p| p.notify(pow_hash, difficulty, number)));
 		}
-
-		trace!(target: "miner", "prepare_sealing: leaving (last={:?})", sealing_work.peek_last_ref().map(|b| b.block().fields().header.hash()));
 	}
 
 	fn update_gas_limit(&self, chain: &MiningBlockChainClient) {
@@ -220,10 +307,22 @@ impl Miner {
 	/// Returns true if we had to prepare new pending block
 	fn enable_and_prepare_sealing(&self, chain: &MiningBlockChainClient) -> bool {
 		trace!(target: "miner", "enable_and_prepare_sealing: entering");
-		let have_work = self.sealing_work.lock().unwrap().peek_last_ref().is_some();
-		trace!(target: "miner", "enable_and_prepare_sealing: have_work={}", have_work);
-		if !have_work {
-			self.sealing_enabled.store(true, atomic::Ordering::Relaxed);
+		let prepare_new = {
+			let mut sealing_work = self.sealing_work.lock().unwrap();
+			let have_work = sealing_work.queue.peek_last_ref().is_some();
+			trace!(target: "miner", "enable_and_prepare_sealing: have_work={}", have_work);
+			if !have_work {
+				sealing_work.enabled = true;
+				true
+			} else {
+				false
+			}
+		};
+		if prepare_new {
+			// --------------------------------------------------------------------------
+			// | NOTE Code below requires transaction_queue and sealing_work locks.     |
+			// | Make sure to release the locks before calling that method.             |
+			// --------------------------------------------------------------------------
 			self.prepare_sealing(chain);
 		}
 		let mut sealing_block_last_request = self.sealing_block_last_request.lock().unwrap();
@@ -233,9 +332,25 @@ impl Miner {
 			*sealing_block_last_request = best_number;
 		}
 
-		// Return if
-		!have_work
+		// Return if we restarted 
+		prepare_new
 	}
+
+	fn add_transactions_to_queue(&self, chain: &MiningBlockChainClient, transactions: Vec<SignedTransaction>, origin: TransactionOrigin, transaction_queue: &mut TransactionQueue) ->
+		Vec<Result<TransactionImportResult, Error>> {
+
+		let fetch_account = |a: &Address| AccountDetails {
+			nonce: chain.latest_nonce(a),
+			balance: chain.latest_balance(a),
+		};
+
+		transactions.into_iter()
+			.map(|tx| transaction_queue.add(tx, &fetch_account, origin))
+			.collect()
+	}
+
+	/// Are we allowed to do a non-mandatory reseal?
+	fn tx_reseal_allowed(&self) -> bool { Instant::now() > *self.next_allowed_reseal.lock().unwrap() }
 }
 
 const SEALING_TIMEOUT_IN_BLOCKS : u64 = 5;
@@ -244,6 +359,10 @@ impl MinerService for Miner {
 
 	fn clear_and_reset(&self, chain: &MiningBlockChainClient) {
 		self.transaction_queue.lock().unwrap().clear();
+		// --------------------------------------------------------------------------
+		// | NOTE Code below requires transaction_queue and sealing_work locks.     |
+		// | Make sure to release the locks before calling that method.             |
+		// --------------------------------------------------------------------------
 		self.update_sealing(chain);
 	}
 
@@ -253,13 +372,13 @@ impl MinerService for Miner {
 		MinerStatus {
 			transactions_in_pending_queue: status.pending,
 			transactions_in_future_queue: status.future,
-			transactions_in_pending_block: sealing_work.peek_last_ref().map_or(0, |b| b.transactions().len()),
+			transactions_in_pending_block: sealing_work.queue.peek_last_ref().map_or(0, |b| b.transactions().len()),
 		}
 	}
 
 	fn call(&self, chain: &MiningBlockChainClient, t: &SignedTransaction, analytics: CallAnalytics) -> Result<Executed, ExecutionError> {
 		let sealing_work = self.sealing_work.lock().unwrap();
-		match sealing_work.peek_last_ref() {
+		match sealing_work.queue.peek_last_ref() {
 			Some(work) => {
 				let block = work.block();
 
@@ -274,7 +393,6 @@ impl MinerService for Miner {
 					last_hashes: last_hashes,
 					gas_used: U256::zero(),
 					gas_limit: U256::max_value(),
-					dao_rescue_block_gas_limit: chain.dao_rescue_block_gas_limit(header.parent_hash().clone()),
 				};
 				// that's just a copy of the state.
 				let mut state = block.state().clone();
@@ -307,7 +425,7 @@ impl MinerService for Miner {
 
 	fn balance(&self, chain: &MiningBlockChainClient, address: &Address) -> U256 {
 		let sealing_work = self.sealing_work.lock().unwrap();
-		sealing_work.peek_last_ref().map_or_else(
+		sealing_work.queue.peek_last_ref().map_or_else(
 			|| chain.latest_balance(address),
 			|b| b.block().fields().state.balance(address)
 		)
@@ -315,7 +433,7 @@ impl MinerService for Miner {
 
 	fn storage_at(&self, chain: &MiningBlockChainClient, address: &Address, position: &H256) -> H256 {
 		let sealing_work = self.sealing_work.lock().unwrap();
-		sealing_work.peek_last_ref().map_or_else(
+		sealing_work.queue.peek_last_ref().map_or_else(
 			|| chain.latest_storage_at(address, position),
 			|b| b.block().fields().state.storage_at(address, position)
 		)
@@ -323,12 +441,12 @@ impl MinerService for Miner {
 
 	fn nonce(&self, chain: &MiningBlockChainClient, address: &Address) -> U256 {
 		let sealing_work = self.sealing_work.lock().unwrap();
-		sealing_work.peek_last_ref().map_or_else(|| chain.latest_nonce(address), |b| b.block().fields().state.nonce(address))
+		sealing_work.queue.peek_last_ref().map_or_else(|| chain.latest_nonce(address), |b| b.block().fields().state.nonce(address))
 	}
 
 	fn code(&self, chain: &MiningBlockChainClient, address: &Address) -> Option<Bytes> {
 		let sealing_work = self.sealing_work.lock().unwrap();
-		sealing_work.peek_last_ref().map_or_else(|| chain.code(address), |b| b.block().fields().state.code(address))
+		sealing_work.queue.peek_last_ref().map_or_else(|| chain.code(address), |b| b.block().fields().state.code(address))
 	}
 
 	fn set_author(&self, author: Address) {
@@ -341,7 +459,11 @@ impl MinerService for Miner {
 
 	/// Set the gas limit we wish to target when sealing a new block.
 	fn set_gas_floor_target(&self, target: U256) {
-		*self.gas_floor_target.write().unwrap() = target;
+		self.gas_range_target.write().unwrap().0 = target;
+	}
+
+	fn set_gas_ceil_target(&self, target: U256) {
+		self.gas_range_target.write().unwrap().1 = target;
 	}
 
 	fn set_minimal_gas_price(&self, min_gas_price: U256) {
@@ -358,7 +480,7 @@ impl MinerService for Miner {
 	}
 
 	fn sensible_gas_limit(&self) -> U256 {
-		*self.gas_floor_target.read().unwrap() / 5.into()
+		self.gas_range_target.read().unwrap().0 / 5.into()
 	}
 
 	fn transactions_limit(&self) -> usize {
@@ -369,6 +491,10 @@ impl MinerService for Miner {
 		self.transaction_queue.lock().unwrap().set_limit(limit)
 	}
 
+	fn set_tx_gas_limit(&self, limit: U256) {
+		self.transaction_queue.lock().unwrap().set_tx_gas_limit(limit)
+	}
+
 	/// Get the author that we will seal blocks as.
 	fn author(&self) -> Address {
 		*self.author.read().unwrap()
@@ -381,30 +507,39 @@ impl MinerService for Miner {
 
 	/// Get the gas limit we wish to target when sealing a new block.
 	fn gas_floor_target(&self) -> U256 {
-		*self.gas_floor_target.read().unwrap()
+		self.gas_range_target.read().unwrap().0
 	}
 
-	fn import_transactions<T>(&self, chain: &MiningBlockChainClient, transactions: Vec<SignedTransaction>, fetch_account: T) ->
-		Vec<Result<TransactionImportResult, Error>>
-		where T: Fn(&Address) -> AccountDetails {
-		let results: Vec<Result<TransactionImportResult, Error>> = {
+	/// Get the gas limit we wish to target when sealing a new block.
+	fn gas_ceil_target(&self) -> U256 {
+		self.gas_range_target.read().unwrap().1
+	}
+
+	fn import_external_transactions(&self, chain: &MiningBlockChainClient, transactions: Vec<SignedTransaction>) ->
+		Vec<Result<TransactionImportResult, Error>> {
+
+		let results = {
 			let mut transaction_queue = self.transaction_queue.lock().unwrap();
-			transactions.into_iter()
-				.map(|tx| transaction_queue.add(tx, &fetch_account, TransactionOrigin::External))
-				.collect()
+			self.add_transactions_to_queue(
+				chain, transactions, TransactionOrigin::External, &mut transaction_queue
+			)
 		};
-		if !results.is_empty() {
+
+		if !results.is_empty() && self.options.reseal_on_external_tx &&	self.tx_reseal_allowed() {
+			// --------------------------------------------------------------------------
+			// | NOTE Code below requires transaction_queue and sealing_work locks.     |
+			// | Make sure to release the locks before calling that method.             |
+			// --------------------------------------------------------------------------
 			self.update_sealing(chain);
 		}
 		results
 	}
 
-	fn import_own_transaction<T>(
+	fn import_own_transaction(
 		&self,
 		chain: &MiningBlockChainClient,
 		transaction: SignedTransaction,
-		fetch_account: T
-	) -> Result<TransactionImportResult, Error> where T: Fn(&Address) -> AccountDetails {
+	) -> Result<TransactionImportResult, Error> {
 
 		let hash = transaction.hash();
 		trace!(target: "own_tx", "Importing transaction: {:?}", transaction);
@@ -412,7 +547,7 @@ impl MinerService for Miner {
 		let imported = {
 			// Be sure to release the lock before we call enable_and_prepare_sealing
 			let mut transaction_queue = self.transaction_queue.lock().unwrap();
-			let import = transaction_queue.add(transaction, &fetch_account, TransactionOrigin::Local);
+			let import = self.add_transactions_to_queue(chain, vec![transaction], TransactionOrigin::Local, &mut transaction_queue).pop().unwrap();
 
 			match import {
 				Ok(ref res) => {
@@ -428,7 +563,11 @@ impl MinerService for Miner {
 			import
 		};
 
-		if imported.is_ok() {
+		// --------------------------------------------------------------------------
+		// | NOTE Code below requires transaction_queue and sealing_work locks.     |
+		// | Make sure to release the locks before calling that method.             |
+		// --------------------------------------------------------------------------
+		if imported.is_ok() && self.options.reseal_on_own_tx && self.tx_reseal_allowed() {
 			// Make sure to do it after transaction is imported and lock is droped.
 			// We need to create pending block and enable sealing
 			let prepared = self.enable_and_prepare_sealing(chain);
@@ -442,26 +581,6 @@ impl MinerService for Miner {
 		imported
 	}
 
-	fn pending_transactions_hashes(&self) -> Vec<H256> {
-		let queue = self.transaction_queue.lock().unwrap();
-		match (self.sealing_enabled.load(atomic::Ordering::Relaxed), self.sealing_work.lock().unwrap().peek_last_ref()) {
-			(true, Some(pending)) => pending.transactions().iter().map(|t| t.hash()).collect(),
-			_ => {
-				queue.pending_hashes()
-			}
-		}
-	}
-
-	fn transaction(&self, hash: &H256) -> Option<SignedTransaction> {
-		let queue = self.transaction_queue.lock().unwrap();
-		match (self.sealing_enabled.load(atomic::Ordering::Relaxed), self.sealing_work.lock().unwrap().peek_last_ref()) {
-			(true, Some(pending)) => pending.transactions().iter().find(|t| &t.hash() == hash).cloned(),
-			_ => {
-				queue.find(hash)
-			}
-		}
-	}
-
 	fn all_transactions(&self) -> Vec<SignedTransaction> {
 		let queue = self.transaction_queue.lock().unwrap();
 		queue.top_transactions()
@@ -469,17 +588,47 @@ impl MinerService for Miner {
 
 	fn pending_transactions(&self) -> Vec<SignedTransaction> {
 		let queue = self.transaction_queue.lock().unwrap();
+		let sw = self.sealing_work.lock().unwrap();
 		// TODO: should only use the sealing_work when it's current (it could be an old block)
-		match (self.sealing_enabled.load(atomic::Ordering::Relaxed), self.sealing_work.lock().unwrap().peek_last_ref()) {
-			(true, Some(pending)) => pending.transactions().clone(),
-			_ => {
-				queue.top_transactions()
-			}
+		let sealing_set = match sw.enabled {
+			true => sw.queue.peek_last_ref(),
+			false => None,
+		};
+		match (&self.options.pending_set, sealing_set) {
+			(&PendingSet::AlwaysQueue, _) | (&PendingSet::SealingOrElseQueue, None) => queue.top_transactions(),
+			(_, sealing) => sealing.map_or_else(Vec::new, |s| s.transactions().clone()),
+		}
+	}
+
+	fn pending_transactions_hashes(&self) -> Vec<H256> {
+		let queue = self.transaction_queue.lock().unwrap();
+		let sw = self.sealing_work.lock().unwrap();
+		let sealing_set = match sw.enabled {
+			true => sw.queue.peek_last_ref(),
+			false => None,
+		};
+		match (&self.options.pending_set, sealing_set) {
+			(&PendingSet::AlwaysQueue, _) | (&PendingSet::SealingOrElseQueue, None) => queue.pending_hashes(),
+			(_, sealing) => sealing.map_or_else(Vec::new, |s| s.transactions().iter().map(|t| t.hash()).collect()),
+		}
+	}
+
+	fn transaction(&self, hash: &H256) -> Option<SignedTransaction> {
+		let queue = self.transaction_queue.lock().unwrap();
+		let sw = self.sealing_work.lock().unwrap();
+		let sealing_set = match sw.enabled {
+			true => sw.queue.peek_last_ref(),
+			false => None,
+		};
+		match (&self.options.pending_set, sealing_set) {
+			(&PendingSet::AlwaysQueue, _) | (&PendingSet::SealingOrElseQueue, None) => queue.find(hash),
+			(_, sealing) => sealing.and_then(|s| s.transactions().iter().find(|t| &t.hash() == hash).cloned()),
 		}
 	}
 
 	fn pending_receipts(&self) -> BTreeMap<H256, Receipt> {
-		match (self.sealing_enabled.load(atomic::Ordering::Relaxed), self.sealing_work.lock().unwrap().peek_last_ref()) {
+		let sealing_work = self.sealing_work.lock().unwrap();
+		match (sealing_work.enabled, sealing_work.queue.peek_last_ref()) {
 			(true, Some(pending)) => {
 				let hashes = pending.transactions()
 					.iter()
@@ -498,66 +647,94 @@ impl MinerService for Miner {
 	}
 
 	fn update_sealing(&self, chain: &MiningBlockChainClient) {
-		if self.sealing_enabled.load(atomic::Ordering::Relaxed) {
-			let current_no = chain.chain_info().best_block_number;
+		trace!(target: "miner", "update_sealing");
+		let requires_reseal = {
 			let has_local_transactions = self.transaction_queue.lock().unwrap().has_local_pending_transactions();
-			let last_request = *self.sealing_block_last_request.lock().unwrap();
-			let should_disable_sealing = !self.force_sealing
-				&& !has_local_transactions
-				&& current_no > last_request
-				&& current_no - last_request > SEALING_TIMEOUT_IN_BLOCKS;
+			let mut sealing_work = self.sealing_work.lock().unwrap();
+			if sealing_work.enabled {
+				trace!(target: "miner", "update_sealing: sealing enabled");
+				let current_no = chain.chain_info().best_block_number;
+				let last_request = *self.sealing_block_last_request.lock().unwrap();
+				let should_disable_sealing = !self.forced_sealing()
+					&& !has_local_transactions
+					&& current_no > last_request
+					&& current_no - last_request > SEALING_TIMEOUT_IN_BLOCKS;
 
-			if should_disable_sealing {
-				trace!(target: "miner", "Miner sleeping (current {}, last {})", current_no, last_request);
-				self.sealing_enabled.store(false, atomic::Ordering::Relaxed);
-				self.sealing_work.lock().unwrap().reset();
+				trace!(target: "miner", "update_sealing: should_disable_sealing={}; current_no={}, last_request={}", should_disable_sealing, current_no, last_request);
+
+				if should_disable_sealing {
+					trace!(target: "miner", "Miner sleeping (current {}, last {})", current_no, last_request);
+					sealing_work.enabled = false;
+					sealing_work.queue.reset();
+					false
+				} else {
+					// sealing enabled and we don't want to sleep.
+					*self.next_allowed_reseal.lock().unwrap() = Instant::now() + self.options.reseal_min_period;
+					true
+				}
 			} else {
-				self.prepare_sealing(chain);
+				// sealing is disabled.
+				false
 			}
+		};
+		
+		if requires_reseal {
+			// --------------------------------------------------------------------------
+			// | NOTE Code below requires transaction_queue and sealing_work locks.     |
+			// | Make sure to release the locks before calling that method.             |
+			// --------------------------------------------------------------------------
+			self.prepare_sealing(chain);
 		}
 	}
 
+	fn is_sealing(&self) -> bool {
+		self.sealing_work.lock().unwrap().queue.is_in_use()
+	}
+
 	fn map_sealing_work<F, T>(&self, chain: &MiningBlockChainClient, f: F) -> Option<T> where F: FnOnce(&ClosedBlock) -> T {
 		trace!(target: "miner", "map_sealing_work: entering");
 		self.enable_and_prepare_sealing(chain);
 		trace!(target: "miner", "map_sealing_work: sealing prepared");
 		let mut sealing_work = self.sealing_work.lock().unwrap();
-		let ret = sealing_work.use_last_ref();
+		let ret = sealing_work.queue.use_last_ref();
 		trace!(target: "miner", "map_sealing_work: leaving use_last_ref={:?}", ret.as_ref().map(|b| b.block().fields().header.hash()));
 		ret.map(f)
 	}
 
 	fn submit_seal(&self, chain: &MiningBlockChainClient, pow_hash: H256, seal: Vec<Bytes>) -> Result<(), Error> {
-		if let Some(b) = self.sealing_work.lock().unwrap().take_used_if(|b| &b.hash() == &pow_hash) {
-			match b.lock().try_seal(self.engine(), seal) {
-				Err(_) => {
-					info!(target: "miner", "Mined block rejected, PoW was invalid.");
-					Err(Error::PowInvalid)
-				}
-				Ok(sealed) => {
-					info!(target: "miner", "New block mined, hash: {}", sealed.header().hash());
-					// TODO: commit DB from `sealed.drain` and make a VerifiedBlock to skip running the transactions twice.
-					let b = sealed.rlp_bytes();
-					let h = b.sha3();
-					try!(chain.import_block(b));
-					info!("Block {} submitted and imported.", h);
-					Ok(())
-				}
-			}
+		let result = if let Some(b) = self.sealing_work.lock().unwrap().queue.get_used_if(if self.options.enable_resubmission { GetAction::Clone } else { GetAction::Take }, |b| &b.hash() == &pow_hash) {
+			b.lock().try_seal(self.engine(), seal).or_else(|_| {
+				warn!(target: "miner", "Mined solution rejected: Invalid.");
+				Err(Error::PowInvalid)
+			})
 		} else {
-			info!(target: "miner", "Mined block rejected, PoW hash invalid or out of date.");
+			warn!(target: "miner", "Mined solution rejected: Block unknown or out of date.");
 			Err(Error::PowHashInvalid)
-		}
+		};
+		result.and_then(|sealed| {
+			let n = sealed.header().number();
+			let h = sealed.header().hash();
+			try!(chain.import_sealed_block(sealed));
+			info!(target: "miner", "Mined block imported OK. #{}: {}", paint(White.bold(), format!("{}", n)), paint(White.bold(), h.hex()));
+			Ok(())
+		})
 	}
 
 	fn chain_new_blocks(&self, chain: &MiningBlockChainClient, _imported: &[H256], _invalid: &[H256], enacted: &[H256], retracted: &[H256]) {
+		trace!(target: "miner", "chain_new_blocks");
+
 		fn fetch_transactions(chain: &MiningBlockChainClient, hash: &H256) -> Vec<SignedTransaction> {
 			let block = chain
 				.block(BlockID::Hash(*hash))
 				// Client should send message after commit to db and inserting to chain.
 				.expect("Expected in-chain blocks.");
 			let block = BlockView::new(&block);
-			block.transactions()
+			let txs = block.transactions();
+			// populate sender
+			for tx in &txs {
+				let _sender = tx.sender();
+			}
+			txs
 		}
 
 		// 1. We ignore blocks that were `imported` (because it means that they are not in canon-chain, and transactions
@@ -574,14 +751,9 @@ impl MinerService for Miner {
 				.par_iter()
 				.map(|h| fetch_transactions(chain, h));
 			out_of_chain.for_each(|txs| {
-				// populate sender
-				for tx in &txs {
-					let _sender = tx.sender();
-				}
-				let _ = self.import_transactions(chain, txs, |a| AccountDetails {
-					nonce: chain.latest_nonce(a),
-					balance: chain.latest_balance(a),
-				});
+				let mut transaction_queue = self.transaction_queue.lock().unwrap();
+				let _ = self.add_transactions_to_queue(chain, txs, TransactionOrigin::External,
+													   &mut transaction_queue);
 			});
 		}
 
@@ -605,7 +777,13 @@ impl MinerService for Miner {
 			});
 		}
 
-		self.update_sealing(chain);
+		if enacted.len() > 0 {
+			// --------------------------------------------------------------------------
+			// | NOTE Code below requires transaction_queue and sealing_work locks.     |
+			// | Make sure to release the locks before calling that method.             |
+			// --------------------------------------------------------------------------
+			self.update_sealing(chain);
+		}
 	}
 }
 
@@ -617,6 +795,7 @@ mod tests {
 	use util::*;
 	use client::{TestBlockChainClient, EachBlockWith};
 	use block::*;
+	use spec::Spec;
 
 	// TODO [ToDr] To uncomment` when TestBlockChainClient can actually return a ClosedBlock.
 	#[ignore]
@@ -624,7 +803,7 @@ mod tests {
 	fn should_prepare_block_to_seal() {
 		// given
 		let client = TestBlockChainClient::default();
-		let miner = Miner::default();
+		let miner = Miner::with_spec(Spec::new_test());
 
 		// when
 		let sealing_work = miner.map_sealing_work(&client, |_| ());
@@ -636,7 +815,7 @@ mod tests {
 	fn should_still_work_after_a_couple_of_blocks() {
 		// given
 		let client = TestBlockChainClient::default();
-		let miner = Miner::default();
+		let miner = Miner::with_spec(Spec::new_test());
 
 		let res = miner.map_sealing_work(&client, |b| b.block().fields().header.hash());
 		assert!(res.is_some());

ethcore/src/miner/mod.rs

@@ -28,11 +28,12 @@
 //! extern crate ethcore;
 //! use std::env;
 //! use util::network::{NetworkService, NetworkConfiguration};
+//! use ethcore::ethereum;
 //! use ethcore::client::{Client, ClientConfig};
 //! use ethcore::miner::{Miner, MinerService};
 //!
 //! fn main() {
-//!		let miner: Miner = Miner::default();
+//!		let miner: Miner = Miner::with_spec(ethereum::new_frontier());
 //!		// get status
 //!		assert_eq!(miner.status().transactions_in_pending_queue, 0);
 //!
@@ -44,9 +45,10 @@
 mod miner;
 mod external;
 mod transaction_queue;
+mod work_notify;
 
 pub use self::transaction_queue::{TransactionQueue, AccountDetails, TransactionImportResult, TransactionOrigin};
-pub use self::miner::{Miner};
+pub use self::miner::{Miner, MinerOptions, PendingSet};
 pub use self::external::{ExternalMiner, ExternalMinerService};
 
 use std::collections::BTreeMap;
@@ -81,27 +83,35 @@ pub trait MinerService : Send + Sync {
 	/// Set minimal gas price of transaction to be accepted for mining.
 	fn set_minimal_gas_price(&self, min_gas_price: U256);
 
-	/// Get the gas limit we wish to target when sealing a new block.
+	/// Get the lower bound of the gas limit we wish to target when sealing a new block.
 	fn gas_floor_target(&self) -> U256;
 
-	/// Set the gas limit we wish to target when sealing a new block.
+	/// Get the upper bound of the gas limit we wish to target when sealing a new block.
+	fn gas_ceil_target(&self) -> U256;
+
+	// TODO: coalesce into single set_range function.
+	/// Set the lower bound of gas limit we wish to target when sealing a new block.
 	fn set_gas_floor_target(&self, target: U256);
 
+	/// Set the upper bound of gas limit we wish to target when sealing a new block.
+	fn set_gas_ceil_target(&self, target: U256);
+
 	/// Get current transactions limit in queue.
 	fn transactions_limit(&self) -> usize;
 
 	/// Set maximal number of transactions kept in the queue (both current and future).
 	fn set_transactions_limit(&self, limit: usize);
 
+	/// Set maximum amount of gas allowed for any single transaction to mine.
+	fn set_tx_gas_limit(&self, limit: U256);
+
 	/// Imports transactions to transaction queue.
-	fn import_transactions<T>(&self, chain: &MiningBlockChainClient, transactions: Vec<SignedTransaction>, fetch_account: T) ->
-		Vec<Result<TransactionImportResult, Error>>
-		where T: Fn(&Address) -> AccountDetails, Self: Sized;
+	fn import_external_transactions(&self, chain: &MiningBlockChainClient, transactions: Vec<SignedTransaction>) ->
+		Vec<Result<TransactionImportResult, Error>>;
 
 	/// Imports own (node owner) transaction to queue.
-	fn import_own_transaction<T>(&self, chain: &MiningBlockChainClient, transaction: SignedTransaction, fetch_account: T) ->
-		Result<TransactionImportResult, Error>
-		where T: Fn(&Address) -> AccountDetails, Self: Sized;
+	fn import_own_transaction(&self, chain: &MiningBlockChainClient, transaction: SignedTransaction) ->
+		Result<TransactionImportResult, Error>;
 
 	/// Returns hashes of transactions currently in pending
 	fn pending_transactions_hashes(&self) -> Vec<H256>;
@@ -138,6 +148,9 @@ pub trait MinerService : Send + Sync {
 	/// Returns highest transaction nonce for given address.
 	fn last_nonce(&self, address: &Address) -> Option<U256>;
 
+	/// Is it currently sealing?
+	fn is_sealing(&self) -> bool;
+
 	/// Suggested gas price.
 	fn sensible_gas_price(&self) -> U256 { 20000000000u64.into() }
 

ethcore/src/miner/transaction_queue.rs

@@ -334,6 +334,8 @@ const GAS_LIMIT_HYSTERESIS: usize = 10; // %
 pub struct TransactionQueue {
 	/// Gas Price threshold for transactions that can be imported to this queue (defaults to 0)
 	minimal_gas_price: U256,
+	/// The maximum amount of gas any individual transaction may use.
+	tx_gas_limit: U256,
 	/// Current gas limit (block gas limit * factor). Transactions above the limit will not be accepted (default to !0)
 	gas_limit: U256,
 	/// Priority queue for transactions that can go to block
@@ -355,11 +357,11 @@ impl Default for TransactionQueue {
 impl TransactionQueue {
 	/// Creates new instance of this Queue
 	pub fn new() -> Self {
-		Self::with_limit(1024)
+		Self::with_limits(1024, !U256::zero())
 	}
 
 	/// Create new instance of this Queue with specified limits
-	pub fn with_limit(limit: usize) -> Self {
+	pub fn with_limits(limit: usize, tx_gas_limit: U256) -> Self {
 		let current = TransactionSet {
 			by_priority: BTreeSet::new(),
 			by_address: Table::new(),
@@ -374,6 +376,7 @@ impl TransactionQueue {
 
 		TransactionQueue {
 			minimal_gas_price: U256::zero(),
+			tx_gas_limit: tx_gas_limit,
 			gas_limit: !U256::zero(),
 			current: current,
 			future: future,
@@ -418,6 +421,12 @@ impl TransactionQueue {
 		};
 	}
 
+	/// Set the new limit for the amount of gas any individual transaction may have.
+	/// Any transaction already imported to the queue is not affected.
+	pub fn set_tx_gas_limit(&mut self, limit: U256) {
+		self.tx_gas_limit = limit;
+	}
+
 	/// Returns current status for this queue
 	pub fn status(&self) -> TransactionQueueStatus {
 		TransactionQueueStatus {
@@ -430,12 +439,14 @@ impl TransactionQueue {
 	pub fn add<T>(&mut self, tx: SignedTransaction, fetch_account: &T, origin: TransactionOrigin) -> Result<TransactionImportResult, Error>
 	where T: Fn(&Address) -> AccountDetails {
 
-		trace!(target: "miner", "Importing: {:?}", tx.hash());
+		trace!(target: "txqueue", "Importing: {:?}", tx.hash());
 
-		if tx.gas_price < self.minimal_gas_price {
-			trace!(target: "miner",
+		if tx.gas_price < self.minimal_gas_price && origin != TransactionOrigin::Local {
+			trace!(target: "txqueue",
 				"Dropping transaction below minimal gas price threshold: {:?} (gp: {} < {})",
-				tx.hash(), tx.gas_price, self.minimal_gas_price
+				tx.hash(),
+				tx.gas_price,
+				self.minimal_gas_price
 			);
 
 			return Err(Error::Transaction(TransactionError::InsufficientGasPrice {
@@ -446,10 +457,13 @@ impl TransactionQueue {
 
 		try!(tx.check_low_s());
 
-		if tx.gas > self.gas_limit {
-			trace!(target: "miner",
-				"Dropping transaction above gas limit: {:?} ({} > {})",
-				tx.hash(), tx.gas, self.gas_limit
+		if tx.gas > self.gas_limit || tx.gas > self.tx_gas_limit {
+			trace!(target: "txqueue",
+				"Dropping transaction above gas limit: {:?} ({} > min({}, {}))",
+				tx.hash(),
+				tx.gas,
+				self.gas_limit,
+				self.tx_gas_limit
 			);
 
 			return Err(Error::Transaction(TransactionError::GasLimitExceeded {
@@ -463,8 +477,13 @@ impl TransactionQueue {
 
 		let cost = vtx.transaction.value + vtx.transaction.gas_price * vtx.transaction.gas;
 		if client_account.balance < cost {
-			trace!(target: "miner", "Dropping transaction without sufficient balance: {:?} ({} < {})",
-				vtx.hash(), client_account.balance, cost);
+			trace!(target: "txqueue",
+				"Dropping transaction without sufficient balance: {:?} ({} < {})",
+				vtx.hash(),
+				client_account.balance,
+				cost
+			);
+
 			return Err(Error::Transaction(TransactionError::InsufficientBalance {
 				cost: cost,
 				balance: client_account.balance
@@ -546,7 +565,7 @@ impl TransactionQueue {
 			if k >= current_nonce {
 				self.future.insert(*sender, k, order.update_height(k, current_nonce));
 			} else {
-				trace!(target: "miner", "Removing old transaction: {:?} (nonce: {} < {})", order.hash, k, current_nonce);
+				trace!(target: "txqueue", "Removing old transaction: {:?} (nonce: {} < {})", order.hash, k, current_nonce);
 				// Remove the transaction completely
 				self.by_hash.remove(&order.hash).expect("All transactions in `future` are also in `by_hash`");
 			}
@@ -567,7 +586,7 @@ impl TransactionQueue {
 			if k >= current_nonce {
 				self.future.insert(*sender, k, order.update_height(k, current_nonce));
 			} else {
-				trace!(target: "miner", "Removing old transaction: {:?} (nonce: {} < {})", order.hash, k, current_nonce);
+				trace!(target: "txqueue", "Removing old transaction: {:?} (nonce: {} < {})", order.hash, k, current_nonce);
 				self.by_hash.remove(&order.hash).expect("All transactions in `future` are also in `by_hash`");
 			}
 		}
@@ -655,7 +674,7 @@ impl TransactionQueue {
 
 		if self.by_hash.get(&tx.hash()).is_some() {
 			// Transaction is already imported.
-			trace!(target: "miner", "Dropping already imported transaction: {:?}", tx.hash());
+			trace!(target: "txqueue", "Dropping already imported transaction: {:?}", tx.hash());
 			return Err(TransactionError::AlreadyImported);
 		}
 
@@ -672,7 +691,7 @@ impl TransactionQueue {
 		// nonce height would result in overflow.
 		if nonce < state_nonce {
 			// Droping transaction
-			trace!(target: "miner", "Dropping old transaction: {:?} (nonce: {} < {})", tx.hash(), nonce, next_nonce);
+			trace!(target: "txqueue", "Dropping old transaction: {:?} (nonce: {} < {})", tx.hash(), nonce, next_nonce);
 			return Err(TransactionError::Old);
 		} else if nonce > next_nonce {
 			// We have a gap - put to future.
@@ -708,7 +727,7 @@ impl TransactionQueue {
 		// Trigger error if the transaction we are importing was removed.
 		try!(check_if_removed(&address, &nonce, removed));
 
-		trace!(target: "miner", "status: {:?}", self.status());
+		trace!(target: "txqueue", "status: {:?}", self.status());
 		Ok(TransactionImportResult::Current)
 	}
 
@@ -1036,7 +1055,7 @@ mod test {
 	}
 
 	#[test]
-	fn should_not_import_transaction_below_min_gas_price_threshold() {
+	fn should_not_import_transaction_below_min_gas_price_threshold_if_external() {
 		// given
 		let mut txq = TransactionQueue::new();
 		let tx = new_tx();
@@ -1055,6 +1074,23 @@ mod test {
 		assert_eq!(stats.future, 0);
 	}
 
+	#[test]
+	fn should_import_transaction_below_min_gas_price_threshold_if_local() {
+		// given
+		let mut txq = TransactionQueue::new();
+		let tx = new_tx();
+		txq.set_minimal_gas_price(tx.gas_price + U256::one());
+
+		// when
+		let res = txq.add(tx, &default_nonce, TransactionOrigin::Local);
+
+		// then
+		assert_eq!(res.unwrap(), TransactionImportResult::Current);
+		let stats = txq.status();
+		assert_eq!(stats.pending, 1);
+		assert_eq!(stats.future, 0);
+	}
+
 	#[test]
 	fn should_reject_incorectly_signed_transaction() {
 		// given
@@ -1288,7 +1324,7 @@ mod test {
 	#[test]
 	fn should_drop_old_transactions_when_hitting_the_limit() {
 		// given
-		let mut txq = TransactionQueue::with_limit(1);
+		let mut txq = TransactionQueue::with_limits(1, !U256::zero());
 		let (tx, tx2) = new_txs(U256::one());
 		let sender = tx.sender().unwrap();
 		let nonce = tx.nonce;
@@ -1310,7 +1346,7 @@ mod test {
 	#[test]
 	fn should_return_correct_nonces_when_dropped_because_of_limit() {
 		// given
-		let mut txq = TransactionQueue::with_limit(2);
+		let mut txq = TransactionQueue::with_limits(2, !U256::zero());
 		let tx = new_tx();
 		let (tx1, tx2) = new_txs(U256::one());
 		let sender = tx1.sender().unwrap();
@@ -1331,7 +1367,7 @@ mod test {
 
 	#[test]
 	fn should_limit_future_transactions() {
-		let mut txq = TransactionQueue::with_limit(1);
+		let mut txq = TransactionQueue::with_limits(1, !U256::zero());
 		txq.current.set_limit(10);
 		let (tx1, tx2) = new_txs_with_gas_price_diff(U256::from(4), U256::from(1));
 		let (tx3, tx4) = new_txs_with_gas_price_diff(U256::from(4), U256::from(2));
@@ -1591,7 +1627,7 @@ mod test {
 	#[test]
 	fn should_keep_right_order_in_future() {
 		// given
-		let mut txq = TransactionQueue::with_limit(1);
+		let mut txq = TransactionQueue::with_limits(1, !U256::zero());
 		let (tx1, tx2) = new_txs(U256::from(1));
 		let prev_nonce = |a: &Address| AccountDetails { nonce: default_nonce(a).nonce - U256::one(), balance:
 			default_nonce(a).balance };

ethcore/src/miner/work_notify.rs

@@ -0,0 +1,115 @@
+// Copyright 2015, 2016 Ethcore (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 hyper;
+
+use hyper::header::ContentType;
+use hyper::method::Method;
+use hyper::client::{Request, Response, Client};
+use hyper::{Next};
+use hyper::net::HttpStream;
+use ethash::SeedHashCompute;
+use hyper::Url;
+use util::*;
+use ethereum::ethash::Ethash;
+
+pub struct WorkPoster {
+	urls: Vec<Url>,
+	client: Mutex<Client<PostHandler>>,
+	seed_compute: Mutex<SeedHashCompute>,
+}
+
+impl WorkPoster {
+	pub fn new(urls: &[String]) -> Self {
+		let urls = urls.into_iter().filter_map(|u| {
+			match Url::parse(&u) {
+				Ok(url) => Some(url),
+				Err(e) => {
+					warn!("Error parsing URL {} : {}", u, e);
+					None
+				}
+			}
+		}).collect();
+		let client = WorkPoster::create_client();
+		WorkPoster {
+			client: Mutex::new(client),
+			urls: urls,
+			seed_compute: Mutex::new(SeedHashCompute::new()),
+		}
+	}
+
+	fn create_client() -> Client<PostHandler> {
+		let client = Client::<PostHandler>::configure()
+			.keep_alive(true)
+			.build().expect("Error creating HTTP client") as Client<PostHandler>;
+		client
+	}
+
+	pub fn notify(&self, pow_hash: H256, difficulty: U256, number: u64) {
+		// TODO: move this to engine
+		let target = Ethash::difficulty_to_boundary(&difficulty);
+		let seed_hash = &self.seed_compute.lock().unwrap().get_seedhash(number);
+		let seed_hash = H256::from_slice(&seed_hash[..]);
+		let body = format!(r#"{{ "result": ["0x{}","0x{}","0x{}","0x{:x}"] }}"#,
+			pow_hash.hex(), seed_hash.hex(), target.hex(), number);
+		let mut client = self.client.lock().unwrap();
+		for u in &self.urls {
+			if let Err(e) = client.request(u.clone(), PostHandler { body: body.clone() }) {
+				warn!("Error sending HTTP notification to {} : {}, retrying", u, e);
+				// TODO: remove this once https://github.com/hyperium/hyper/issues/848 is fixed
+				*client = WorkPoster::create_client();
+				if let Err(e) = client.request(u.clone(), PostHandler { body: body.clone() }) {
+					warn!("Error sending HTTP notification to {} : {}", u, e);
+				}
+			}
+		}
+	}
+}
+
+struct PostHandler {
+	body: String,
+}
+
+impl hyper::client::Handler<HttpStream> for PostHandler {
+	fn on_request(&mut self, request: &mut Request) -> Next {
+		request.set_method(Method::Post);
+		request.headers_mut().set(ContentType::json());
+		Next::write()
+	}
+
+	fn on_request_writable(&mut self, encoder: &mut hyper::Encoder<HttpStream>) -> Next {
+		if let Err(e) = encoder.write_all(self.body.as_bytes()) {
+			trace!("Error posting work data: {}", e);
+		}
+		encoder.close();
+		Next::read()
+
+	}
+
+	fn on_response(&mut self, _response: Response) -> Next {
+		Next::end()
+	}
+
+	fn on_response_readable(&mut self, _decoder: &mut hyper::Decoder<HttpStream>) -> Next {
+        Next::end()
+	}
+
+    fn on_error(&mut self, err: hyper::Error) -> Next {
+		trace!("Error posting work data: {}", err);
+		Next::end()
+    }
+}
+

ethcore/src/pod_account.rs

@@ -28,8 +28,8 @@ pub struct PodAccount {
 	pub balance: U256,
 	/// The nonce of the account.
 	pub nonce: U256,
-	/// The code of the account.
-	pub code: Bytes,
+	/// The code of the account or `None` in the special case that it is unknown.
+	pub code: Option<Bytes>,
 	/// The storage of the account.
 	pub storage: BTreeMap<H256, H256>,
 }
@@ -38,7 +38,7 @@ impl PodAccount {
 	/// Construct new object.
 	#[cfg(test)]
 	pub fn new(balance: U256, nonce: U256, code: Bytes, storage: BTreeMap<H256, H256>) -> PodAccount {
-		PodAccount { balance: balance, nonce: nonce, code: code, storage: storage }
+		PodAccount { balance: balance, nonce: nonce, code: Some(code), storage: storage }
 	}
 
 	/// Convert Account to a PodAccount.
@@ -48,7 +48,7 @@ impl PodAccount {
 			balance: *acc.balance(),
 			nonce: *acc.nonce(),
 			storage: acc.storage_overlay().iter().fold(BTreeMap::new(), |mut m, (k, &(_, ref v))| {m.insert(k.clone(), v.clone()); m}),
-			code: acc.code().unwrap().to_vec(),
+			code: acc.code().map(|x| x.to_vec()),
 		}
 	}
 
@@ -58,14 +58,15 @@ impl PodAccount {
 		stream.append(&self.nonce);
 		stream.append(&self.balance);
 		stream.append(&sec_trie_root(self.storage.iter().map(|(k, v)| (k.to_vec(), encode(&U256::from(v.as_slice())).to_vec())).collect()));
-		stream.append(&self.code.sha3());
+		stream.append(&self.code.as_ref().unwrap_or(&vec![]).sha3());
 		stream.out()
 	}
 
 	/// Place additional data into given hash DB.
 	pub fn insert_additional(&self, db: &mut AccountDBMut) {
-		if !self.code.is_empty() {
-			db.insert(&self.code);
+		match self.code {
+			Some(ref c) if !c.is_empty() => { db.insert(c); }
+			_ => {}
 		}
 		let mut r = H256::new();
 		let mut t = SecTrieDBMut::new(db, &mut r);
@@ -80,7 +81,7 @@ impl From<ethjson::blockchain::Account> for PodAccount {
 		PodAccount {
 			balance: a.balance.into(),
 			nonce: a.nonce.into(),
-			code: a.code.into(),
+			code: Some(a.code.into()),
 			storage: a.storage.into_iter().map(|(key, value)| {
 				let key: U256 = key.into();
 				let value: U256 = value.into();
@@ -95,7 +96,7 @@ impl From<ethjson::spec::Account> for PodAccount {
 		PodAccount {
 			balance: a.balance.map_or_else(U256::zero, Into::into),
 			nonce: a.nonce.map_or_else(U256::zero, Into::into),
-			code: vec![],
+			code: Some(vec![]),
 			storage: BTreeMap::new()
 		}
 	}
@@ -103,7 +104,13 @@ impl From<ethjson::spec::Account> for PodAccount {
 
 impl fmt::Display for PodAccount {
 	fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-		write!(f, "(bal={}; nonce={}; code={} bytes, #{}; storage={} items)", self.balance, self.nonce, self.code.len(), self.code.sha3(), self.storage.len())
+		write!(f, "(bal={}; nonce={}; code={} bytes, #{}; storage={} items)",
+			self.balance,
+			self.nonce,
+			self.code.as_ref().map_or(0, |c| c.len()),
+			self.code.as_ref().map_or_else(H256::new, |c| c.sha3()),
+			self.storage.len()
+		)
 	}
 }
 
@@ -114,13 +121,13 @@ pub fn diff_pod(pre: Option<&PodAccount>, post: Option<&PodAccount>) -> Option<A
 		(None, Some(x)) => Some(AccountDiff {
 			balance: Diff::Born(x.balance),
 			nonce: Diff::Born(x.nonce),
-			code: Diff::Born(x.code.clone()),
+			code: Diff::Born(x.code.as_ref().expect("account is newly created; newly created accounts must be given code; all caches should remain in place; qed").clone()),
 			storage: x.storage.iter().map(|(k, v)| (k.clone(), Diff::Born(v.clone()))).collect(),
 		}),
 		(Some(x), None) => Some(AccountDiff {
 			balance: Diff::Died(x.balance),
 			nonce: Diff::Died(x.nonce),
-			code: Diff::Died(x.code.clone()),
+			code: Diff::Died(x.code.as_ref().expect("account is deleted; only way to delete account is running SUICIDE; account must have had own code cached to make operation; all caches should remain in place; qed").clone()),
 			storage: x.storage.iter().map(|(k, v)| (k.clone(), Diff::Died(v.clone()))).collect(),
 		}),
 		(Some(pre), Some(post)) => {
@@ -130,7 +137,10 @@ pub fn diff_pod(pre: Option<&PodAccount>, post: Option<&PodAccount>) -> Option<A
 			let r = AccountDiff {
 				balance: Diff::new(pre.balance, post.balance),
 				nonce: Diff::new(pre.nonce, post.nonce),
-				code: Diff::new(pre.code.clone(), post.code.clone()),
+				code: match (pre.code.clone(), post.code.clone()) {
+					(Some(pre_code), Some(post_code)) => Diff::new(pre_code, post_code),
+					_ => Diff::Same,
+				},
 				storage: storage.into_iter().map(|k|
 					(k.clone(), Diff::new(
 						pre.storage.get(&k).cloned().unwrap_or_else(H256::new),
@@ -156,7 +166,7 @@ mod test {
 
 	#[test]
 	fn existence() {
-		let a = PodAccount{balance: 69.into(), nonce: 0.into(), code: vec![], storage: map![]};
+		let a = PodAccount{balance: 69.into(), nonce: 0.into(), code: Some(vec![]), storage: map![]};
 		assert_eq!(diff_pod(Some(&a), Some(&a)), None);
 		assert_eq!(diff_pod(None, Some(&a)), Some(AccountDiff{
 			balance: Diff::Born(69.into()),
@@ -168,8 +178,8 @@ mod test {
 
 	#[test]
 	fn basic() {
-		let a = PodAccount{balance: 69.into(), nonce: 0.into(), code: vec![], storage: map![]};
-		let b = PodAccount{balance: 42.into(), nonce: 1.into(), code: vec![], storage: map![]};
+		let a = PodAccount{balance: 69.into(), nonce: 0.into(), code: Some(vec![]), storage: map![]};
+		let b = PodAccount{balance: 42.into(), nonce: 1.into(), code: Some(vec![]), storage: map![]};
 		assert_eq!(diff_pod(Some(&a), Some(&b)), Some(AccountDiff {
 			balance: Diff::Changed(69.into(), 42.into()),
 			nonce: Diff::Changed(0.into(), 1.into()),
@@ -180,8 +190,8 @@ mod test {
 
 	#[test]
 	fn code() {
-		let a = PodAccount{balance: 0.into(), nonce: 0.into(), code: vec![], storage: map![]};
-		let b = PodAccount{balance: 0.into(), nonce: 1.into(), code: vec![0], storage: map![]};
+		let a = PodAccount{balance: 0.into(), nonce: 0.into(), code: Some(vec![]), storage: map![]};
+		let b = PodAccount{balance: 0.into(), nonce: 1.into(), code: Some(vec![0]), storage: map![]};
 		assert_eq!(diff_pod(Some(&a), Some(&b)), Some(AccountDiff {
 			balance: Diff::Same,
 			nonce: Diff::Changed(0.into(), 1.into()),
@@ -195,13 +205,13 @@ mod test {
 		let a = PodAccount {
 			balance: 0.into(),
 			nonce: 0.into(),
-			code: vec![],
+			code: Some(vec![]),
 			storage: map_into![1 => 1, 2 => 2, 3 => 3, 4 => 4, 5 => 0, 6 => 0, 7 => 0]
 		};
 		let b = PodAccount {
 			balance: 0.into(),
 			nonce: 0.into(),
-			code: vec![],
+			code: Some(vec![]),
 			storage: map_into![1 => 1, 2 => 3, 3 => 0, 5 => 0, 7 => 7, 8 => 0, 9 => 9]
 		};
 		assert_eq!(diff_pod(Some(&a), Some(&b)), Some(AccountDiff {

ethcore/src/service.rs

@@ -17,6 +17,7 @@
 //! Creates and registers client and network services.
 
 use util::*;
+use util::Colour::{Yellow, White};
 use util::panics::*;
 use spec::Spec;
 use error::*;
@@ -36,6 +37,8 @@ pub enum SyncMessage {
 		retracted: Vec<H256>,
 		/// Hashes of blocks that are now included in cannonical chain
 		enacted: Vec<H256>,
+		/// Hashes of blocks that are sealed by this node
+		sealed: Vec<H256>,
 	},
 	/// Best Block Hash in chain has been changed
 	NewChainHead,
@@ -69,8 +72,7 @@ impl ClientService {
 			try!(net_service.start());
 		}
 
-		info!("Starting {}", net_service.host_info());
-		info!("Configured for {} using {:?} engine", spec.name, spec.engine.name());
+		info!("Configured for {} using {} engine", paint(White.bold(), spec.name.clone()), paint(Yellow.bold(), spec.engine.name().to_owned()));
 		let client = try!(Client::new(config, spec, db_path, miner, net_service.io().channel()));
 		panic_handler.forward_from(client.deref());
 		let client_io = Arc::new(ClientIoHandler {
@@ -159,9 +161,15 @@ mod tests {
 
 	#[test]
 	fn it_can_be_started() {
-		let spec = get_test_spec();
 		let temp_path = RandomTempPath::new();
-		let service = ClientService::start(ClientConfig::default(), spec, NetworkConfiguration::new_local(), &temp_path.as_path(), Arc::new(Miner::default()), false);
+		let service = ClientService::start(
+			ClientConfig::default(),
+			get_test_spec(),
+			NetworkConfiguration::new_local(),
+			&temp_path.as_path(),
+			Arc::new(Miner::with_spec(get_test_spec())),
+			false
+		);
 		assert!(service.is_ok());
 	}
 }

ethcore/src/spec/spec.rs

@@ -38,6 +38,8 @@ pub struct CommonParams {
 	pub network_id: U256,
 	/// Minimum gas limit.
 	pub min_gas_limit: U256,
+	/// Fork block to check.
+	pub fork_block: Option<(BlockNumber, H256)>,
 }
 
 impl From<ethjson::spec::Params> for CommonParams {
@@ -47,6 +49,7 @@ impl From<ethjson::spec::Params> for CommonParams {
 			maximum_extra_data_size: p.maximum_extra_data_size.into(),
 			network_id: p.network_id.into(),
 			min_gas_limit: p.min_gas_limit.into(),
+			fork_block: if let (Some(n), Some(h)) = (p.fork_block, p.fork_hash) { Some((n.into(), h.into())) } else { None },
 		}
 	}
 }
@@ -148,6 +151,9 @@ impl Spec {
 	/// Get the configured Network ID.
 	pub fn network_id(&self) -> U256 { self.params.network_id }
 
+	/// Get the configured network fork block.
+	pub fn fork_block(&self) -> Option<(BlockNumber, H256)> { self.params.fork_block }
+
 	/// Get the header of the genesis block.
 	pub fn genesis_header(&self) -> Header {
 		Header {

ethcore/src/state.rs

@@ -19,7 +19,7 @@ use engine::Engine;
 use executive::{Executive, TransactOptions};
 use evm::Factory as EvmFactory;
 use account_db::*;
-use trace::Trace;
+use trace::FlatTrace;
 use pod_account::*;
 use pod_state::{self, PodState};
 use types::state_diff::StateDiff;
@@ -29,7 +29,7 @@ pub struct ApplyOutcome {
 	/// The receipt for the applied transaction.
 	pub receipt: Receipt,
 	/// The trace for the applied transaction, if None if tracing is disabled.
-	pub trace: Option<Trace>,
+	pub trace: Vec<FlatTrace>,
 }
 
 /// Result type for the execution ("application") of a transaction.
@@ -167,7 +167,7 @@ impl State {
 
 	/// Get the nonce of account `a`.
 	pub fn nonce(&self, a: &Address) -> U256 {
-		self.get(a, false).as_ref().map_or(U256::zero(), |account| *account.nonce())
+		self.get(a, false).as_ref().map_or(self.account_start_nonce, |account| *account.nonce())
 	}
 
 	/// Mutate storage of account `address` so that it is `value` for `key`.
@@ -208,12 +208,17 @@ impl State {
 		self.require(a, false).set_storage(key, value)
 	}
 
-	/// Initialise the code of account `a` so that it is `value` for `key`.
+	/// Initialise the code of account `a` so that it is `code`.
 	/// NOTE: Account should have been created with `new_contract`.
 	pub fn init_code(&mut self, a: &Address, code: Bytes) {
 		self.require_or_from(a, true, || Account::new_contract(0.into(), self.account_start_nonce), |_|{}).init_code(code);
 	}
 
+	/// Reset the code of account `a` so that it is `code`.
+	pub fn reset_code(&mut self, a: &Address, code: Bytes) {
+		self.require_or_from(a, true, || Account::new_contract(0.into(), self.account_start_nonce), |_|{}).reset_code(code);
+	}
+
 	/// Execute a given transaction.
 	/// This will change the state accordingly.
 	pub fn apply(&mut self, env_info: &EnvInfo, engine: &Engine, vm_factory: &EvmFactory, t: &SignedTransaction, tracing: bool) -> ApplyResult {
@@ -222,30 +227,6 @@ impl State {
 		let options = TransactOptions { tracing: tracing, vm_tracing: false, check_nonce: true };
 		let e = try!(Executive::new(self, env_info, engine, vm_factory).transact(t, options));
 
-		let broken_dao = H256::from("6a5d24750f78441e56fec050dc52fe8e911976485b7472faac7464a176a67caa");
-
-		// dao attack soft fork
-		if engine.schedule(&env_info).reject_dao_transactions {
-			let whitelisted = if let Action::Call(to) = t.action {
-				to == Address::from("Da4a4626d3E16e094De3225A751aAb7128e96526") ||
-				to == Address::from("2ba9D006C1D72E67A70b5526Fc6b4b0C0fd6D334")
-			} else { false };
-			if !whitelisted {
-				// collect all the addresses which have changed.
-				let addresses = self.cache.borrow().iter().map(|(addr, _)| addr.clone()).collect::<Vec<_>>();
-
-				for a in &addresses {
-					if self.code(a).map_or(false, |c| c.sha3() == broken_dao) {
-						// Figure out if the balance has been reduced.
-						let maybe_original = SecTrieDB::new(self.db.as_hashdb(), &self.root).expect(SEC_TRIE_DB_UNWRAP_STR).get(&a).map(Account::from_rlp);
-						if maybe_original.map_or(false, |original| *original.balance() > self.balance(a)) {
-							return Err(Error::Transaction(TransactionError::DAORescue));
-						}
-					}
-				}
-			}
-		}
-
 		// TODO uncomment once to_pod() works correctly.
 //		trace!("Applied transaction. Diff:\n{}\n", state_diff::diff_pod(&old, &self.to_pod()));
 		self.commit();
@@ -408,7 +389,8 @@ use spec::*;
 use transaction::*;
 use util::log::init_log;
 use trace::trace;
-use trace::trace::{Trace};
+use trace::FlatTrace;
+use types::executed::CallType;
 
 #[test]
 fn should_apply_create_transaction() {
@@ -433,8 +415,9 @@ fn should_apply_create_transaction() {
 	state.add_balance(t.sender().as_ref().unwrap(), &(100.into()));
 	let vm_factory = Default::default();
 	let result = state.apply(&info, &engine, &vm_factory, &t, true).unwrap();
-	let expected_trace = Some(Trace {
-		depth: 0,
+	let expected_trace = vec![FlatTrace {
+		trace_address: Default::default(),
+		subtraces: 0,
 		action: trace::Action::Create(trace::Create {
 			from: "9cce34f7ab185c7aba1b7c8140d620b4bda941d6".into(),
 			value: 100.into(),
@@ -446,8 +429,7 @@ fn should_apply_create_transaction() {
 			address: Address::from_str("8988167e088c87cd314df6d3c2b83da5acb93ace").unwrap(),
 			code: vec![96, 0, 53, 84, 21, 96, 9, 87, 0, 91, 96, 32, 53, 96, 0, 53]
 		}),
-		subs: vec![]
-	});
+	}];
 
 	assert_eq!(result.trace, expected_trace);
 }
@@ -494,8 +476,8 @@ fn should_trace_failed_create_transaction() {
 	state.add_balance(t.sender().as_ref().unwrap(), &(100.into()));
 	let vm_factory = Default::default();
 	let result = state.apply(&info, &engine, &vm_factory, &t, true).unwrap();
-	let expected_trace = Some(Trace {
-		depth: 0,
+	let expected_trace = vec![FlatTrace {
+		trace_address: Default::default(),
 		action: trace::Action::Create(trace::Create {
 			from: "9cce34f7ab185c7aba1b7c8140d620b4bda941d6".into(),
 			value: 100.into(),
@@ -503,8 +485,8 @@ fn should_trace_failed_create_transaction() {
 			init: vec![91, 96, 0, 86],
 		}),
 		result: trace::Res::FailedCreate,
-		subs: vec![]
-	});
+		subtraces: 0
+	}];
 
 	assert_eq!(result.trace, expected_trace);
 }
@@ -533,21 +515,22 @@ fn should_trace_call_transaction() {
 	state.add_balance(t.sender().as_ref().unwrap(), &(100.into()));
 	let vm_factory = Default::default();
 	let result = state.apply(&info, &engine, &vm_factory, &t, true).unwrap();
-	let expected_trace = Some(Trace {
-		depth: 0,
+	let expected_trace = vec![FlatTrace {
+		trace_address: Default::default(),
 		action: trace::Action::Call(trace::Call {
 			from: "9cce34f7ab185c7aba1b7c8140d620b4bda941d6".into(),
 			to: 0xa.into(),
 			value: 100.into(),
 			gas: 79000.into(),
 			input: vec![],
+			call_type: CallType::Call,
 		}),
 		result: trace::Res::Call(trace::CallResult {
 			gas_used: U256::from(3),
 			output: vec![]
 		}),
-		subs: vec![]
-	});
+		subtraces: 0,
+	}];
 
 	assert_eq!(result.trace, expected_trace);
 }
@@ -575,21 +558,22 @@ fn should_trace_basic_call_transaction() {
 	state.add_balance(t.sender().as_ref().unwrap(), &(100.into()));
 	let vm_factory = Default::default();
 	let result = state.apply(&info, &engine, &vm_factory, &t, true).unwrap();
-	let expected_trace = Some(Trace {
-		depth: 0,
+	let expected_trace = vec![FlatTrace {
+		trace_address: Default::default(),
 		action: trace::Action::Call(trace::Call {
 			from: "9cce34f7ab185c7aba1b7c8140d620b4bda941d6".into(),
 			to: 0xa.into(),
 			value: 100.into(),
 			gas: 79000.into(),
 			input: vec![],
+			call_type: CallType::Call,
 		}),
 		result: trace::Res::Call(trace::CallResult {
 			gas_used: U256::from(0),
 			output: vec![]
 		}),
-		subs: vec![]
-	});
+		subtraces: 0,
+	}];
 
 	assert_eq!(result.trace, expected_trace);
 }
@@ -617,21 +601,24 @@ fn should_trace_call_transaction_to_builtin() {
 	let vm_factory = Default::default();
 	let result = state.apply(&info, engine.deref(), &vm_factory, &t, true).unwrap();
 
-	assert_eq!(result.trace, Some(Trace {
-		depth: 0,
+	let expected_trace = vec![FlatTrace {
+		trace_address: Default::default(),
 		action: trace::Action::Call(trace::Call {
 			from: "9cce34f7ab185c7aba1b7c8140d620b4bda941d6".into(),
 			to: "0000000000000000000000000000000000000001".into(),
 			value: 0.into(),
 			gas: 79_000.into(),
 			input: vec![],
+			call_type: CallType::Call,
 		}),
 		result: trace::Res::Call(trace::CallResult {
 			gas_used: U256::from(3000),
 			output: vec![]
 		}),
-		subs: vec![]
-	}));
+		subtraces: 0,
+	}];
+
+	assert_eq!(result.trace, expected_trace);
 }
 
 #[test]
@@ -658,21 +645,23 @@ fn should_not_trace_subcall_transaction_to_builtin() {
 	let vm_factory = Default::default();
 	let result = state.apply(&info, engine.deref(), &vm_factory, &t, true).unwrap();
 
-	let expected_trace = Some(Trace {
-		depth: 0,
+	let expected_trace = vec![FlatTrace {
+		trace_address: Default::default(),
 		action: trace::Action::Call(trace::Call {
 			from: "9cce34f7ab185c7aba1b7c8140d620b4bda941d6".into(),
 			to: 0xa.into(),
 			value: 0.into(),
 			gas: 79000.into(),
 			input: vec![],
+			call_type: CallType::Call,
 		}),
 		result: trace::Res::Call(trace::CallResult {
 			gas_used: U256::from(28_061),
 			output: vec![]
 		}),
-		subs: vec![]
-	});
+		subtraces: 0,
+	}];
+
 	assert_eq!(result.trace, expected_trace);
 }
 
@@ -701,21 +690,38 @@ fn should_not_trace_callcode() {
 	let vm_factory = Default::default();
 	let result = state.apply(&info, engine.deref(), &vm_factory, &t, true).unwrap();
 
-	let expected_trace = Some(Trace {
-		depth: 0,
+	let expected_trace = vec![FlatTrace {
+		trace_address: Default::default(),
+		subtraces: 1,
 		action: trace::Action::Call(trace::Call {
 			from: "9cce34f7ab185c7aba1b7c8140d620b4bda941d6".into(),
 			to: 0xa.into(),
 			value: 0.into(),
 			gas: 79000.into(),
 			input: vec![],
+			call_type: CallType::Call,
 		}),
 		result: trace::Res::Call(trace::CallResult {
-			gas_used: U256::from(64),
+			gas_used: 64.into(),
 			output: vec![]
 		}),
-		subs: vec![]
-	});
+	}, FlatTrace {
+		trace_address: vec![0].into_iter().collect(),
+		subtraces: 0,
+		action: trace::Action::Call(trace::Call {
+			from: 0xa.into(),
+			to: 0xa.into(),
+			value: 0.into(),
+			gas: 4096.into(),
+			input: vec![],
+			call_type: CallType::CallCode,
+		}),
+		result: trace::Res::Call(trace::CallResult {
+			gas_used: 3.into(),
+			output: vec![],
+		}),
+	}];
+
 	assert_eq!(result.trace, expected_trace);
 }
 
@@ -747,21 +753,38 @@ fn should_not_trace_delegatecall() {
 	let vm_factory = Default::default();
 	let result = state.apply(&info, engine.deref(), &vm_factory, &t, true).unwrap();
 
-	let expected_trace = Some(Trace {
-		depth: 0,
+	let expected_trace = vec![FlatTrace {
+		trace_address: Default::default(),
+		subtraces: 1,
 		action: trace::Action::Call(trace::Call {
 			from: "9cce34f7ab185c7aba1b7c8140d620b4bda941d6".into(),
 			to: 0xa.into(),
 			value: 0.into(),
 			gas: 79000.into(),
 			input: vec![],
+			call_type: CallType::Call,
 		}),
 		result: trace::Res::Call(trace::CallResult {
 			gas_used: U256::from(61),
 			output: vec![]
 		}),
-		subs: vec![]
-	});
+	}, FlatTrace {
+		trace_address: vec![0].into_iter().collect(),
+		subtraces: 0,
+		action: trace::Action::Call(trace::Call {
+			from: "9cce34f7ab185c7aba1b7c8140d620b4bda941d6".into(),
+			to: 0xa.into(),
+			value: 0.into(),
+			gas: 32768.into(),
+			input: vec![],
+			call_type: CallType::DelegateCall,
+		}),
+		result: trace::Res::Call(trace::CallResult {
+			gas_used: 3.into(),
+			output: vec![],
+		}),
+	}];
+
 	assert_eq!(result.trace, expected_trace);
 }
 
@@ -789,20 +812,19 @@ fn should_trace_failed_call_transaction() {
 	state.add_balance(t.sender().as_ref().unwrap(), &(100.into()));
 	let vm_factory = Default::default();
 	let result = state.apply(&info, &engine, &vm_factory, &t, true).unwrap();
-	let expected_trace = Some(Trace {
-		depth: 0,
+	let expected_trace = vec![FlatTrace {
+		trace_address: Default::default(),
 		action: trace::Action::Call(trace::Call {
 			from: "9cce34f7ab185c7aba1b7c8140d620b4bda941d6".into(),
 			to: 0xa.into(),
 			value: 100.into(),
 			gas: 79000.into(),
 			input: vec![],
+			call_type: CallType::Call,
 		}),
 		result: trace::Res::FailedCall,
-		subs: vec![]
-	});
-
-	println!("trace: {:?}", result.trace);
+		subtraces: 0,
+	}];
 
 	assert_eq!(result.trace, expected_trace);
 }
@@ -832,35 +854,38 @@ fn should_trace_call_with_subcall_transaction() {
 	state.add_balance(t.sender().as_ref().unwrap(), &(100.into()));
 	let vm_factory = Default::default();
 	let result = state.apply(&info, &engine, &vm_factory, &t, true).unwrap();
-	let expected_trace = Some(Trace {
-		depth: 0,
+
+	let expected_trace = vec![FlatTrace {
+		trace_address: Default::default(),
+		subtraces: 1,
 		action: trace::Action::Call(trace::Call {
 			from: "9cce34f7ab185c7aba1b7c8140d620b4bda941d6".into(),
 			to: 0xa.into(),
 			value: 100.into(),
 			gas: 79000.into(),
 			input: vec![],
+			call_type: CallType::Call,
 		}),
 		result: trace::Res::Call(trace::CallResult {
 			gas_used: U256::from(69),
 			output: vec![]
 		}),
-		subs: vec![Trace {
-			depth: 1,
-			action: trace::Action::Call(trace::Call {
-				from: 0xa.into(),
-				to: 0xb.into(),
-				value: 0.into(),
-				gas: 78934.into(),
-				input: vec![],
-			}),
-			result: trace::Res::Call(trace::CallResult {
-				gas_used: U256::from(3),
-				output: vec![]
-			}),
-			subs: vec![]
-		}]
-	});
+	}, FlatTrace {
+		trace_address: vec![0].into_iter().collect(),
+		subtraces: 0,
+		action: trace::Action::Call(trace::Call {
+			from: 0xa.into(),
+			to: 0xb.into(),
+			value: 0.into(),
+			gas: 78934.into(),
+			input: vec![],
+			call_type: CallType::Call,
+		}),
+		result: trace::Res::Call(trace::CallResult {
+			gas_used: U256::from(3),
+			output: vec![]
+		}),
+	}];
 
 	assert_eq!(result.trace, expected_trace);
 }
@@ -889,32 +914,34 @@ fn should_trace_call_with_basic_subcall_transaction() {
 	state.add_balance(t.sender().as_ref().unwrap(), &(100.into()));
 	let vm_factory = Default::default();
 	let result = state.apply(&info, &engine, &vm_factory, &t, true).unwrap();
-	let expected_trace = Some(Trace {
-		depth: 0,
+	let expected_trace = vec![FlatTrace {
+		trace_address: Default::default(),
+		subtraces: 1,
 		action: trace::Action::Call(trace::Call {
 			from: "9cce34f7ab185c7aba1b7c8140d620b4bda941d6".into(),
 			to: 0xa.into(),
 			value: 100.into(),
 			gas: 79000.into(),
 			input: vec![],
+			call_type: CallType::Call,
 		}),
 		result: trace::Res::Call(trace::CallResult {
 			gas_used: U256::from(31761),
 			output: vec![]
 		}),
-		subs: vec![Trace {
-			depth: 1,
-			action: trace::Action::Call(trace::Call {
-				from: 0xa.into(),
-				to: 0xb.into(),
-				value: 69.into(),
-				gas: 2300.into(),
-				input: vec![],
-			}),
-			result: trace::Res::Call(trace::CallResult::default()),
-			subs: vec![]
-		}]
-	});
+	}, FlatTrace {
+		trace_address: vec![0].into_iter().collect(),
+		subtraces: 0,
+		action: trace::Action::Call(trace::Call {
+			from: 0xa.into(),
+			to: 0xb.into(),
+			value: 69.into(),
+			gas: 2300.into(),
+			input: vec![],
+			call_type: CallType::Call,
+		}),
+		result: trace::Res::Call(trace::CallResult::default()),
+	}];
 
 	assert_eq!(result.trace, expected_trace);
 }
@@ -943,21 +970,22 @@ fn should_not_trace_call_with_invalid_basic_subcall_transaction() {
 	state.add_balance(t.sender().as_ref().unwrap(), &(100.into()));
 	let vm_factory = Default::default();
 	let result = state.apply(&info, &engine, &vm_factory, &t, true).unwrap();
-	let expected_trace = Some(Trace {
-		depth: 0,
+	let expected_trace = vec![FlatTrace {
+		trace_address: Default::default(),
+		subtraces: 0,
 		action: trace::Action::Call(trace::Call {
 			from: "9cce34f7ab185c7aba1b7c8140d620b4bda941d6".into(),
 			to: 0xa.into(),
 			value: 100.into(),
 			gas: 79000.into(),
 			input: vec![],
+			call_type: CallType::Call,
 		}),
 		result: trace::Res::Call(trace::CallResult {
 			gas_used: U256::from(31761),
 			output: vec![]
 		}),
-		subs: vec![]
-	});
+	}];
 
 	assert_eq!(result.trace, expected_trace);
 }
@@ -987,32 +1015,34 @@ fn should_trace_failed_subcall_transaction() {
 	state.add_balance(t.sender().as_ref().unwrap(), &(100.into()));
 	let vm_factory = Default::default();
 	let result = state.apply(&info, &engine, &vm_factory, &t, true).unwrap();
-	let expected_trace = Some(Trace {
-		depth: 0,
+	let expected_trace = vec![FlatTrace {
+		trace_address: Default::default(),
+		subtraces: 1,
 		action: trace::Action::Call(trace::Call {
 			from: "9cce34f7ab185c7aba1b7c8140d620b4bda941d6".into(),
 			to: 0xa.into(),
 			value: 100.into(),
 			gas: 79000.into(),
 			input: vec![],
+			call_type: CallType::Call,
 		}),
 		result: trace::Res::Call(trace::CallResult {
 			gas_used: U256::from(79_000),
 			output: vec![]
 		}),
-		subs: vec![Trace {
-			depth: 1,
-			action: trace::Action::Call(trace::Call {
-				from: 0xa.into(),
-				to: 0xb.into(),
-				value: 0.into(),
-				gas: 78934.into(),
-				input: vec![],
-			}),
-			result: trace::Res::FailedCall,
-			subs: vec![]
-		}]
-	});
+	}, FlatTrace {
+		trace_address: vec![0].into_iter().collect(),
+		subtraces: 0,
+		action: trace::Action::Call(trace::Call {
+			from: 0xa.into(),
+			to: 0xb.into(),
+			value: 0.into(),
+			gas: 78934.into(),
+			input: vec![],
+			call_type: CallType::Call,
+		}),
+		result: trace::Res::FailedCall,
+	}];
 
 	assert_eq!(result.trace, expected_trace);
 }
@@ -1043,49 +1073,52 @@ fn should_trace_call_with_subcall_with_subcall_transaction() {
 	state.add_balance(t.sender().as_ref().unwrap(), &(100.into()));
 	let vm_factory = Default::default();
 	let result = state.apply(&info, &engine, &vm_factory, &t, true).unwrap();
-	let expected_trace = Some(Trace {
-		depth: 0,
+	let expected_trace = vec![FlatTrace {
+		trace_address: Default::default(),
+		subtraces: 1,
 		action: trace::Action::Call(trace::Call {
 			from: "9cce34f7ab185c7aba1b7c8140d620b4bda941d6".into(),
 			to: 0xa.into(),
 			value: 100.into(),
 			gas: 79000.into(),
 			input: vec![],
+			call_type: CallType::Call,
 		}),
 		result: trace::Res::Call(trace::CallResult {
 			gas_used: U256::from(135),
 			output: vec![]
 		}),
-		subs: vec![Trace {
-			depth: 1,
-			action: trace::Action::Call(trace::Call {
-				from: 0xa.into(),
-				to: 0xb.into(),
-				value: 0.into(),
-				gas: 78934.into(),
-				input: vec![],
-			}),
-			result: trace::Res::Call(trace::CallResult {
-				gas_used: U256::from(69),
-				output: vec![]
-			}),
-			subs: vec![Trace {
-				depth: 2,
-				action: trace::Action::Call(trace::Call {
-					from: 0xb.into(),
-					to: 0xc.into(),
-					value: 0.into(),
-					gas: 78868.into(),
-					input: vec![],
-				}),
-				result: trace::Res::Call(trace::CallResult {
-					gas_used: U256::from(3),
-					output: vec![]
-				}),
-				subs: vec![]
-			}]
-		}]
-	});
+	}, FlatTrace {
+		trace_address: vec![0].into_iter().collect(),
+		subtraces: 1,
+		action: trace::Action::Call(trace::Call {
+			from: 0xa.into(),
+			to: 0xb.into(),
+			value: 0.into(),
+			gas: 78934.into(),
+			input: vec![],
+			call_type: CallType::Call,
+		}),
+		result: trace::Res::Call(trace::CallResult {
+			gas_used: U256::from(69),
+			output: vec![]
+		}),
+	}, FlatTrace {
+		trace_address: vec![0, 0].into_iter().collect(),
+		subtraces: 0,
+		action: trace::Action::Call(trace::Call {
+			from: 0xb.into(),
+			to: 0xc.into(),
+			value: 0.into(),
+			gas: 78868.into(),
+			input: vec![],
+			call_type: CallType::Call,
+		}),
+		result: trace::Res::Call(trace::CallResult {
+			gas_used: U256::from(3),
+			output: vec![]
+		}),
+	}];
 
 	assert_eq!(result.trace, expected_trace);
 }
@@ -1116,46 +1149,104 @@ fn should_trace_failed_subcall_with_subcall_transaction() {
 	state.add_balance(t.sender().as_ref().unwrap(), &(100.into()));
 	let vm_factory = Default::default();
 	let result = state.apply(&info, &engine, &vm_factory, &t, true).unwrap();
-	let expected_trace = Some(Trace {
-		depth: 0,
+
+	let expected_trace = vec![FlatTrace {
+		trace_address: Default::default(),
+		subtraces: 1,
 		action: trace::Action::Call(trace::Call {
 			from: "9cce34f7ab185c7aba1b7c8140d620b4bda941d6".into(),
 			to: 0xa.into(),
 			value: 100.into(),
 			gas: 79000.into(),
 			input: vec![],
+			call_type: CallType::Call,
 		}),
 		result: trace::Res::Call(trace::CallResult {
 			gas_used: U256::from(79_000),
 			output: vec![]
-		}),
-		subs: vec![Trace {
-			depth: 1,
+		})
+	}, FlatTrace {
+		trace_address: vec![0].into_iter().collect(),
+		subtraces: 1,
 			action: trace::Action::Call(trace::Call {
-				from: 0xa.into(),
-				to: 0xb.into(),
-				value: 0.into(),
-				gas: 78934.into(),
-				input: vec![],
-			}),
-			result: trace::Res::FailedCall,
-			subs: vec![Trace {
-				depth: 2,
-				action: trace::Action::Call(trace::Call {
-				from: 0xb.into(),
-				to: 0xc.into(),
-				value: 0.into(),
-				gas: 78868.into(),
-				input: vec![],
-				}),
-				result: trace::Res::Call(trace::CallResult {
-					gas_used: U256::from(3),
-					output: vec![]
-				}),
-				subs: vec![]
-			}]
-		}]
-	});
+			from: 0xa.into(),
+			to: 0xb.into(),
+			value: 0.into(),
+			gas: 78934.into(),
+			input: vec![],
+			call_type: CallType::Call,
+		}),
+		result: trace::Res::FailedCall,
+	}, FlatTrace {
+		trace_address: vec![0, 0].into_iter().collect(),
+		subtraces: 0,
+		action: trace::Action::Call(trace::Call {
+			from: 0xb.into(),
+			to: 0xc.into(),
+			value: 0.into(),
+			gas: 78868.into(),
+			call_type: CallType::Call,
+			input: vec![],
+		}),
+		result: trace::Res::Call(trace::CallResult {
+			gas_used: U256::from(3),
+			output: vec![]
+		}),
+	}];
+
+	assert_eq!(result.trace, expected_trace);
+}
+
+#[test]
+fn should_trace_suicide() {
+	init_log();
+
+	let temp = RandomTempPath::new();
+	let mut state = get_temp_state_in(temp.as_path());
+
+	let mut info = EnvInfo::default();
+	info.gas_limit = 1_000_000.into();
+	let engine = TestEngine::new(5);
+
+	let t = Transaction {
+		nonce: 0.into(),
+		gas_price: 0.into(),
+		gas: 100_000.into(),
+		action: Action::Call(0xa.into()),
+		value: 100.into(),
+		data: vec![],
+	}.sign(&"".sha3());
+
+	state.init_code(&0xa.into(), FromHex::from_hex("73000000000000000000000000000000000000000bff").unwrap());
+	state.add_balance(&0xa.into(), &50.into());
+	state.add_balance(t.sender().as_ref().unwrap(), &100.into());
+	let vm_factory = Default::default();
+	let result = state.apply(&info, &engine, &vm_factory, &t, true).unwrap();
+	let expected_trace = vec![FlatTrace {
+		trace_address: Default::default(),
+		subtraces: 1,
+		action: trace::Action::Call(trace::Call {
+			from: "9cce34f7ab185c7aba1b7c8140d620b4bda941d6".into(),
+			to: 0xa.into(),
+			value: 100.into(),
+			gas: 79000.into(),
+			input: vec![],
+			call_type: CallType::Call,
+		}),
+		result: trace::Res::Call(trace::CallResult {
+			gas_used: 3.into(),
+			output: vec![]
+		}),
+	}, FlatTrace {
+		trace_address: vec![0].into_iter().collect(),
+		subtraces: 0,
+		action: trace::Action::Suicide(trace::Suicide {
+			address: 0xa.into(),
+			refund_address: 0xb.into(),
+			balance: 150.into(),
+		}),
+		result: trace::Res::None,
+	}];
 
 	assert_eq!(result.trace, expected_trace);
 }

ethcore/src/tests/client.rs

@@ -24,7 +24,7 @@ use miner::Miner;
 #[test]
 fn imports_from_empty() {
 	let dir = RandomTempPath::new();
-	let client = Client::new(ClientConfig::default(), get_test_spec(), dir.as_path(), Arc::new(Miner::default()), IoChannel::disconnected()).unwrap();
+	let client = Client::new(ClientConfig::default(), get_test_spec(), dir.as_path(), Arc::new(Miner::with_spec(get_test_spec())), IoChannel::disconnected()).unwrap();
 	client.import_verified_blocks(&IoChannel::disconnected());
 	client.flush_queue();
 }
@@ -42,7 +42,7 @@ fn returns_state_root_basic() {
 #[test]
 fn imports_good_block() {
 	let dir = RandomTempPath::new();
-	let client = Client::new(ClientConfig::default(), get_test_spec(), dir.as_path(), Arc::new(Miner::default()), IoChannel::disconnected()).unwrap();
+	let client = Client::new(ClientConfig::default(), get_test_spec(), dir.as_path(), Arc::new(Miner::with_spec(get_test_spec())), IoChannel::disconnected()).unwrap();
 	let good_block = get_good_dummy_block();
 	if let Err(_) = client.import_block(good_block) {
 		panic!("error importing block being good by definition");
@@ -57,7 +57,7 @@ fn imports_good_block() {
 #[test]
 fn query_none_block() {
 	let dir = RandomTempPath::new();
-	let client = Client::new(ClientConfig::default(), get_test_spec(), dir.as_path(), Arc::new(Miner::default()), IoChannel::disconnected()).unwrap();
+	let client = Client::new(ClientConfig::default(), get_test_spec(), dir.as_path(), Arc::new(Miner::with_spec(get_test_spec())), IoChannel::disconnected()).unwrap();
 
     let non_existant = client.block_header(BlockID::Number(188));
 	assert!(non_existant.is_none());
@@ -150,7 +150,7 @@ fn can_mine() {
 	let client_result = get_test_client_with_blocks(vec![dummy_blocks[0].clone()]);
 	let client = client_result.reference();
 
-	let b = client.prepare_open_block(Address::default(), 31415926.into(), vec![]).close();
+	let b = client.prepare_open_block(Address::default(), (3141562.into(), 31415620.into()), vec![]).close();
 
 	assert_eq!(*b.block().header().parent_hash(), BlockView::new(&dummy_blocks[0]).header_view().sha3());
 }

ethcore/src/tests/helpers.rs

@@ -17,7 +17,7 @@
 use client::{BlockChainClient, Client, ClientConfig};
 use common::*;
 use spec::*;
-use block::{OpenBlock};
+use block::{OpenBlock, Drain};
 use blockchain::{BlockChain, Config as BlockChainConfig};
 use state::*;
 use evm::Schedule;
@@ -30,6 +30,7 @@ use miner::Miner;
 pub enum ChainEra {
 	Frontier,
 	Homestead,
+	DaoHardfork,
 }
 
 #[cfg(test)]
@@ -151,7 +152,7 @@ pub fn generate_dummy_client_with_spec_and_data<F>(get_test_spec: F, block_numbe
 	let dir = RandomTempPath::new();
 
 	let test_spec = get_test_spec();
-	let client = Client::new(ClientConfig::default(), get_test_spec(), dir.as_path(), Arc::new(Miner::default()), IoChannel::disconnected()).unwrap();
+	let client = Client::new(ClientConfig::default(), get_test_spec(), dir.as_path(), Arc::new(Miner::with_spec(get_test_spec())), IoChannel::disconnected()).unwrap();
 	let test_engine = &test_spec.engine;
 
 	let mut db_result = get_temp_journal_db();
@@ -179,9 +180,8 @@ pub fn generate_dummy_client_with_spec_and_data<F>(get_test_spec: F, block_numbe
 			db,
 			&last_header,
 			last_hashes.clone(),
-			None,
 			author.clone(),
-			3141562.into(),
+			(3141562.into(), 31415620.into()),
 			vec![]
 		).unwrap();
 		b.set_difficulty(U256::from(0x20000));
@@ -250,7 +250,7 @@ pub fn push_blocks_to_client(client: &Arc<Client>, timestamp_salt: u64, starting
 
 pub fn get_test_client_with_blocks(blocks: Vec<Bytes>) -> GuardedTempResult<Arc<Client>> {
 	let dir = RandomTempPath::new();
-	let client = Client::new(ClientConfig::default(), get_test_spec(), dir.as_path(), Arc::new(Miner::default()), IoChannel::disconnected()).unwrap();
+	let client = Client::new(ClientConfig::default(), get_test_spec(), dir.as_path(), Arc::new(Miner::with_spec(get_test_spec())), IoChannel::disconnected()).unwrap();
 	for block in &blocks {
 		if let Err(_) = client.import_block(block.clone()) {
 			panic!("panic importing block which is well-formed");
@@ -303,7 +303,7 @@ pub fn generate_dummy_empty_blockchain() -> GuardedTempResult<BlockChain> {
 
 pub fn get_temp_journal_db() -> GuardedTempResult<Box<JournalDB>> {
 	let temp = RandomTempPath::new();
-	let journal_db = journaldb::new(temp.as_str(), journaldb::Algorithm::EarlyMerge, None);
+	let journal_db = journaldb::new(temp.as_str(), journaldb::Algorithm::EarlyMerge, DatabaseConfig::default());
 	GuardedTempResult {
 		_temp: temp,
 		result: Some(journal_db)
@@ -320,7 +320,7 @@ pub fn get_temp_state() -> GuardedTempResult<State> {
 }
 
 pub fn get_temp_journal_db_in(path: &Path) -> Box<JournalDB> {
-	journaldb::new(path.to_str().unwrap(), journaldb::Algorithm::EarlyMerge, None)
+	journaldb::new(path.to_str().unwrap(), journaldb::Algorithm::EarlyMerge, DatabaseConfig::default())
 }
 
 pub fn get_temp_state_in(path: &Path) -> State {

ethcore/src/trace/block.rs

@@ -1,58 +0,0 @@
-// Copyright 2015, 2016 Ethcore (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 util::rlp::*;
-use basic_types::LogBloom;
-use super::Trace;
-
-/// Traces created by transactions from the same block.
-#[derive(Clone)]
-pub struct BlockTraces(Vec<Trace>);
-
-impl From<Vec<Trace>> for BlockTraces {
-	fn from(traces: Vec<Trace>) -> Self {
-		BlockTraces(traces)
-	}
-}
-
-impl Into<Vec<Trace>> for BlockTraces {
-	fn into(self) -> Vec<Trace> {
-		self.0
-	}
-}
-
-impl Decodable for BlockTraces {
-	fn decode<D>(decoder: &D) -> Result<Self, DecoderError> where D: Decoder {
-		let traces = try!(Decodable::decode(decoder));
-		let block_traces = BlockTraces(traces);
-		Ok(block_traces)
-	}
-}
-
-impl Encodable for BlockTraces {
-	fn rlp_append(&self, s: &mut RlpStream) {
-		Encodable::rlp_append(&self.0, s)
-	}
-}
-
-impl BlockTraces {
-	/// Returns bloom of all traces in given block.
-	pub fn bloom(&self) -> LogBloom {
-		self.0.iter()
-			.fold(LogBloom::default(), |acc, trace| acc | trace.bloom())
-	}
-}
-

ethcore/src/trace/db.rs

@@ -15,7 +15,6 @@
 // along with Parity.  If not, see <http://www.gnu.org/licenses/>.
 
 //! Trace database.
-use std::ptr;
 use std::ops::{Deref, DerefMut};
 use std::collections::HashMap;
 use std::sync::{RwLock, Arc};
@@ -24,7 +23,7 @@ use bloomchain::{Number, Config as BloomConfig};
 use bloomchain::group::{BloomGroupDatabase, BloomGroupChain, GroupPosition, BloomGroup};
 use util::{H256, H264, Database, DatabaseConfig, DBTransaction};
 use header::BlockNumber;
-use trace::{BlockTraces, LocalizedTrace, Config, Switch, Filter, Database as TraceDatabase, ImportRequest,
+use trace::{LocalizedTrace, Config, Switch, Filter, Database as TraceDatabase, ImportRequest,
 DatabaseExtras, Error};
 use db::{Key, Writable, Readable, CacheUpdatePolicy};
 use blooms;
@@ -41,15 +40,13 @@ enum TraceDBIndex {
 	BloomGroups = 1,
 }
 
-impl Key<BlockTraces> for H256 {
+impl Key<FlatBlockTraces> for H256 {
 	type Target = H264;
 
 	fn key(&self) -> H264 {
 		let mut result = H264::default();
 		result[0] = TraceDBIndex::BlockTraces as u8;
-		unsafe {
-			ptr::copy(self.as_ptr(), result.as_mut_ptr().offset(1), 32);
-		}
+		result[1..33].copy_from_slice(self);
 		result
 	}
 }
@@ -84,9 +81,9 @@ impl Key<blooms::BloomGroup> for TraceGroupPosition {
 		result[0] = TraceDBIndex::BloomGroups as u8;
 		result[1] = self.0.level;
 		result[2] = self.0.index as u8;
-		result[3] = (self.0.index << 8) as u8;
-		result[4] = (self.0.index << 16) as u8;
-		result[5] = (self.0.index << 24) as u8;
+		result[3] = (self.0.index >> 8) as u8;
+		result[4] = (self.0.index >> 16) as u8;
+		result[5] = (self.0.index >> 24) as u8;
 		TraceGroupKey(result)
 	}
 }
@@ -94,7 +91,7 @@ impl Key<blooms::BloomGroup> for TraceGroupPosition {
 /// Trace database.
 pub struct TraceDB<T> where T: DatabaseExtras {
 	// cache
-	traces: RwLock<HashMap<H256, BlockTraces>>,
+	traces: RwLock<HashMap<H256, FlatBlockTraces>>,
 	blooms: RwLock<HashMap<TraceGroupPosition, blooms::BloomGroup>>,
 	// db
 	tracesdb: Database,
@@ -156,15 +153,13 @@ impl<T> TraceDB<T> where T: DatabaseExtras {
 	}
 
 	/// Returns traces for block with hash.
-	fn traces(&self, block_hash: &H256) -> Option<BlockTraces> {
+	fn traces(&self, block_hash: &H256) -> Option<FlatBlockTraces> {
 		self.tracesdb.read_with_cache(&self.traces, block_hash)
 	}
 
 	/// Returns vector of transaction traces for given block.
 	fn transactions_traces(&self, block_hash: &H256) -> Option<Vec<FlatTransactionTraces>> {
-		self.traces(block_hash)
-			.map(FlatBlockTraces::from)
-			.map(Into::into)
+		self.traces(block_hash).map(Into::into)
 	}
 
 	fn matching_block_traces(
@@ -202,7 +197,7 @@ impl<T> TraceDB<T> where T: DatabaseExtras {
 						action: trace.action,
 						result: trace.result,
 						subtraces: trace.subtraces,
-						trace_address: trace.trace_address,
+						trace_address: trace.trace_address.into_iter().collect(),
 						transaction_number: tx_number,
 						transaction_hash: tx_hash.clone(),
 						block_number: block_number,
@@ -268,12 +263,13 @@ impl<T> TraceDatabase for TraceDB<T> where T: DatabaseExtras {
 	}
 
 	fn trace(&self, block_number: BlockNumber, tx_position: usize, trace_position: Vec<usize>) -> Option<LocalizedTrace> {
+		let trace_position_deq = trace_position.into_iter().collect();
 		self.extras.block_hash(block_number)
 			.and_then(|block_hash| self.transactions_traces(&block_hash)
 				.and_then(|traces| traces.into_iter().nth(tx_position))
 				.map(Into::<Vec<FlatTrace>>::into)
 				// this may and should be optimized
-				.and_then(|traces| traces.into_iter().find(|trace| trace.trace_address == trace_position))
+				.and_then(|traces| traces.into_iter().find(|trace| trace.trace_address == trace_position_deq))
 				.map(|trace| {
 					let tx_hash = self.extras.transaction_hash(block_number, tx_position)
 						.expect("Expected to find transaction hash. Database is probably corrupted");
@@ -282,7 +278,7 @@ impl<T> TraceDatabase for TraceDB<T> where T: DatabaseExtras {
 						action: trace.action,
 						result: trace.result,
 						subtraces: trace.subtraces,
-						trace_address: trace.trace_address,
+						trace_address: trace.trace_address.into_iter().collect(),
 						transaction_number: tx_position,
 						transaction_hash: tx_hash,
 						block_number: block_number,
@@ -306,7 +302,7 @@ impl<T> TraceDatabase for TraceDB<T> where T: DatabaseExtras {
 						action: trace.action,
 						result: trace.result,
 						subtraces: trace.subtraces,
-						trace_address: trace.trace_address,
+						trace_address: trace.trace_address.into_iter().collect(),
 						transaction_number: tx_position,
 						transaction_hash: tx_hash.clone(),
 						block_number: block_number,
@@ -333,7 +329,7 @@ impl<T> TraceDatabase for TraceDB<T> where T: DatabaseExtras {
 									action: trace.action,
 									result: trace.result,
 									subtraces: trace.subtraces,
-									trace_address: trace.trace_address,
+									trace_address: trace.trace_address.into_iter().collect(),
 									transaction_number: tx_position,
 									transaction_hash: tx_hash.clone(),
 									block_number: block_number,
@@ -356,8 +352,7 @@ impl<T> TraceDatabase for TraceDB<T> where T: DatabaseExtras {
 					.expect("Expected to find block hash. Extras db is probably corrupted");
 				let traces = self.traces(&hash)
 					.expect("Expected to find a trace. Db is probably corrupted.");
-				let flat_block = FlatBlockTraces::from(traces);
-				self.matching_block_traces(filter, flat_block, hash, number)
+				self.matching_block_traces(filter, traces, hash, number)
 			})
 			.collect()
 	}
@@ -371,8 +366,10 @@ mod tests {
 	use devtools::RandomTempPath;
 	use header::BlockNumber;
 	use trace::{Config, Switch, TraceDB, Database, DatabaseExtras, ImportRequest};
-	use trace::{BlockTraces, Trace, Filter, LocalizedTrace, AddressesFilter};
+	use trace::{Filter, LocalizedTrace, AddressesFilter};
 	use trace::trace::{Call, Action, Res};
+	use trace::flat::{FlatTrace, FlatBlockTraces, FlatTransactionTraces};
+	use types::executed::CallType;
 
 	struct NoopExtras;
 
@@ -386,6 +383,7 @@ mod tests {
 		}
 	}
 
+	#[derive(Clone)]
 	struct Extras {
 		block_hashes: HashMap<BlockNumber, H256>,
 		transaction_hashes: HashMap<BlockNumber, Vec<H256>>,
@@ -490,18 +488,19 @@ mod tests {
 
 	fn create_simple_import_request(block_number: BlockNumber, block_hash: H256) -> ImportRequest {
 		ImportRequest {
-			traces: BlockTraces::from(vec![Trace {
-				depth: 0,
+			traces: FlatBlockTraces::from(vec![FlatTransactionTraces::from(vec![FlatTrace {
+				trace_address: Default::default(),
+				subtraces: 0,
 				action: Action::Call(Call {
-					from: Address::from(1),
-					to: Address::from(2),
-					value: U256::from(3),
-					gas: U256::from(4),
+					from: 1.into(),
+					to: 2.into(),
+					value: 3.into(),
+					gas: 4.into(),
 					input: vec![],
+					call_type: CallType::Call,
 				}),
 				result: Res::FailedCall,
-				subs: vec![],
-			}]),
+			}])]),
 			block_hash: block_hash.clone(),
 			block_number: block_number,
 			enacted: vec![block_hash],
@@ -517,6 +516,7 @@ mod tests {
 				value: U256::from(3),
 				gas: U256::from(4),
 				input: vec![],
+				call_type: CallType::Call,
 			}),
 			result: Res::FailedCall,
 			trace_address: vec![],

ethcore/src/trace/executive_tracer.rs

@@ -18,13 +18,53 @@
 
 use util::{Bytes, Address, U256};
 use action_params::ActionParams;
-use trace::trace::{Trace, Call, Create, Action, Res, CreateResult, CallResult, VMTrace, VMOperation, VMExecutedOperation, MemoryDiff, StorageDiff};
-use trace::{Tracer, VMTracer};
+use trace::trace::{Call, Create, Action, Res, CreateResult, CallResult, VMTrace, VMOperation, VMExecutedOperation, MemoryDiff, StorageDiff, Suicide};
+use trace::{Tracer, VMTracer, FlatTrace};
 
 /// Simple executive tracer. Traces all calls and creates. Ignores delegatecalls.
 #[derive(Default)]
 pub struct ExecutiveTracer {
-	traces: Vec<Trace>,
+	traces: Vec<FlatTrace>,
+}
+
+fn top_level_subtraces(traces: &[FlatTrace]) -> usize {
+	traces.iter().filter(|t| t.trace_address.is_empty()).count()
+}
+
+fn update_trace_address(traces: Vec<FlatTrace>) -> Vec<FlatTrace> {
+	// input traces are expected to be ordered like
+	// []
+	// [0]
+	// [0, 0]
+	// [0, 1]
+	// []
+	// [0]
+	//
+	// so they can be transformed to
+	//
+	// [0]
+	// [0, 0]
+	// [0, 0, 0]
+	// [0, 0, 1]
+	// [1]
+	// [1, 0]
+	let mut top_subtrace_index = 0;
+	let mut subtrace_subtraces_left = 0;
+	traces.into_iter().map(|mut trace| {
+		let is_top_subtrace = trace.trace_address.is_empty();
+		trace.trace_address.push_front(top_subtrace_index);
+
+		if is_top_subtrace {
+			subtrace_subtraces_left = trace.subtraces;
+		} else {
+			subtrace_subtraces_left -= 1;
+		}
+
+		if subtrace_subtraces_left == 0 {
+			top_subtrace_index += 1;
+		}
+		trace
+	}).collect()
 }
 
 impl Tracer for ExecutiveTracer {
@@ -40,59 +80,67 @@ impl Tracer for ExecutiveTracer {
 		Some(vec![])
 	}
 
-	fn trace_call(&mut self, call: Option<Call>, gas_used: U256, output: Option<Bytes>, depth: usize, subs: Vec<Trace>, delegate_call: bool) {
-		// don't trace if it's DELEGATECALL or CALLCODE.
-		if delegate_call {
-			return;
-		}
-
-		let trace = Trace {
-			depth: depth,
-			subs: subs,
+	fn trace_call(&mut self, call: Option<Call>, gas_used: U256, output: Option<Bytes>, subs: Vec<FlatTrace>) {
+		let trace = FlatTrace {
+			trace_address: Default::default(),
+			subtraces: top_level_subtraces(&subs),
 			action: Action::Call(call.expect("self.prepare_trace_call().is_some(): so we must be tracing: qed")),
 			result: Res::Call(CallResult {
 				gas_used: gas_used,
 				output: output.expect("self.prepare_trace_output().is_some(): so we must be tracing: qed")
-			})
+			}),
 		};
 		self.traces.push(trace);
+		self.traces.extend(update_trace_address(subs));
 	}
 
-	fn trace_create(&mut self, create: Option<Create>, gas_used: U256, code: Option<Bytes>, address: Address, depth: usize, subs: Vec<Trace>) {
-		let trace = Trace {
-			depth: depth,
-			subs: subs,
+	fn trace_create(&mut self, create: Option<Create>, gas_used: U256, code: Option<Bytes>, address: Address, subs: Vec<FlatTrace>) {
+		let trace = FlatTrace {
+			subtraces: top_level_subtraces(&subs),
 			action: Action::Create(create.expect("self.prepare_trace_create().is_some(): so we must be tracing: qed")),
 			result: Res::Create(CreateResult {
 				gas_used: gas_used,
 				code: code.expect("self.prepare_trace_output.is_some(): so we must be tracing: qed"),
 				address: address
-			})
+			}),
+			trace_address: Default::default(),
 		};
 		self.traces.push(trace);
+		self.traces.extend(update_trace_address(subs));
 	}
 
-	fn trace_failed_call(&mut self, call: Option<Call>, depth: usize, subs: Vec<Trace>, delegate_call: bool) {
-		// don't trace if it's DELEGATECALL or CALLCODE.
-		if delegate_call {
-			return;
-		}
-
-		let trace = Trace {
-			depth: depth,
-			subs: subs,
+	fn trace_failed_call(&mut self, call: Option<Call>, subs: Vec<FlatTrace>) {
+		let trace = FlatTrace {
+			trace_address: Default::default(),
+			subtraces: top_level_subtraces(&subs),
 			action: Action::Call(call.expect("self.prepare_trace_call().is_some(): so we must be tracing: qed")),
 			result: Res::FailedCall,
 		};
 		self.traces.push(trace);
+		self.traces.extend(update_trace_address(subs));
 	}
 
-	fn trace_failed_create(&mut self, create: Option<Create>, depth: usize, subs: Vec<Trace>) {
-		let trace = Trace {
-			depth: depth,
-			subs: subs,
+	fn trace_failed_create(&mut self, create: Option<Create>, subs: Vec<FlatTrace>) {
+		let trace = FlatTrace {
+			subtraces: top_level_subtraces(&subs),
 			action: Action::Create(create.expect("self.prepare_trace_create().is_some(): so we must be tracing: qed")),
 			result: Res::FailedCreate,
+			trace_address: Default::default(),
+		};
+		self.traces.push(trace);
+		self.traces.extend(update_trace_address(subs));
+	}
+
+	fn trace_suicide(&mut self, address: Address, balance: U256, refund_address: Address) {
+		let trace = FlatTrace {
+			subtraces: 0,
+			action: Action::Suicide(Suicide {
+				address: address,
+				refund_address: refund_address,
+				balance: balance,
+			}),
+			result: Res::None,
+			trace_address: Default::default(),
 		};
 		self.traces.push(trace);
 	}
@@ -101,17 +149,30 @@ impl Tracer for ExecutiveTracer {
 		ExecutiveTracer::default()
 	}
 
-	fn traces(self) -> Vec<Trace> {
+	fn traces(self) -> Vec<FlatTrace> {
 		self.traces
 	}
 }
 
 /// Simple VM tracer. Traces all operations.
-#[derive(Default)]
 pub struct ExecutiveVMTracer {
 	data: VMTrace,
 }
 
+impl ExecutiveVMTracer {
+	/// Create a new top-level instance.
+	pub fn toplevel() -> Self {
+		ExecutiveVMTracer {
+			data: VMTrace {
+				parent_step: 0,
+				code: vec![],
+				operations: vec![Default::default()],	// prefill with a single entry so that prepare_subtrace can get the parent_step
+				subs: vec![],
+			}
+		}
+	}
+}
+
 impl VMTracer for ExecutiveVMTracer {
 	fn trace_prepare_execute(&mut self, pc: usize, instruction: u8, gas_cost: &U256) -> bool {
 		self.data.operations.push(VMOperation {
@@ -135,7 +196,7 @@ impl VMTracer for ExecutiveVMTracer {
 
 	fn prepare_subtrace(&self, code: &[u8]) -> Self {
 		ExecutiveVMTracer { data: VMTrace {
-			parent_step: self.data.operations.len(),
+			parent_step: self.data.operations.len() - 1,	// won't overflow since we must already have pushed an operation in trace_prepare_execute.
 			code: code.to_vec(),
 			operations: vec![],
 			subs: vec![],

ethcore/src/trace/flat.rs

@@ -1,183 +0,0 @@
-// Copyright 2015, 2016 Ethcore (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/>.
-
-//! Flat trace module
-
-use trace::BlockTraces;
-use super::trace::{Trace, Action, Res};
-
-/// Trace localized in vector of traces produced by a single transaction.
-///
-/// Parent and children indexes refer to positions in this vector.
-pub struct FlatTrace {
-	/// Type of action performed by a transaction.
-	pub action: Action,
-	/// Result of this action.
-	pub result: Res,
-	/// Number of subtraces.
-	pub subtraces: usize,
-	/// Exact location of trace.
-	///
-	/// [index in root, index in first CALL, index in second CALL, ...]
-	pub trace_address: Vec<usize>,
-}
-
-/// Represents all traces produced by a single transaction.
-pub struct FlatTransactionTraces(Vec<FlatTrace>);
-
-impl Into<Vec<FlatTrace>> for FlatTransactionTraces {
-	fn into(self) -> Vec<FlatTrace> {
-		self.0
-	}
-}
-
-/// Represents all traces produced by transactions in a single block.
-pub struct FlatBlockTraces(Vec<FlatTransactionTraces>);
-
-impl From<BlockTraces> for FlatBlockTraces {
-	fn from(block_traces: BlockTraces) -> Self {
-		let traces: Vec<Trace> = block_traces.into();
-		let ordered = traces.into_iter()
-			.map(|trace| FlatBlockTraces::flatten(vec![], trace))
-			.map(FlatTransactionTraces)
-			.collect();
-		FlatBlockTraces(ordered)
-	}
-}
-
-impl Into<Vec<FlatTransactionTraces>> for FlatBlockTraces {
-	fn into(self) -> Vec<FlatTransactionTraces> {
-		self.0
-	}
-}
-
-impl FlatBlockTraces {
-	/// Helper function flattening nested tree structure to vector of ordered traces.
-	fn flatten(address: Vec<usize>, trace: Trace) -> Vec<FlatTrace> {
-		let subtraces = trace.subs.len();
-		let all_subs = trace.subs
-			.into_iter()
-			.enumerate()
-			.flat_map(|(index, subtrace)| {
-				let mut subtrace_address = address.clone();
-				subtrace_address.push(index);
-				FlatBlockTraces::flatten(subtrace_address, subtrace)
-			})
-			.collect::<Vec<_>>();
-
-		let ordered = FlatTrace {
-			action: trace.action,
-			result: trace.result,
-			subtraces: subtraces,
-			trace_address: address,
-		};
-
-		let mut result = vec![ordered];
-		result.extend(all_subs);
-		result
-	}
-}
-
-#[cfg(test)]
-mod tests {
-	use super::{FlatBlockTraces, FlatTransactionTraces, FlatTrace};
-	use util::{U256, Address};
-	use trace::trace::{Action, Res, CallResult, Call, Create, Trace};
-	use trace::BlockTraces;
-
-	#[test]
-	fn test_block_from() {
-		let trace = Trace {
-			depth: 2,
-			action: Action::Call(Call {
-				from: Address::from(1),
-				to: Address::from(2),
-				value: U256::from(3),
-				gas: U256::from(4),
-				input: vec![0x5]
-			}),
-			subs: vec![
-				Trace {
-					depth: 3,
-					action: Action::Create(Create {
-						from: Address::from(6),
-						value: U256::from(7),
-						gas: U256::from(8),
-						init: vec![0x9]
-					}),
-					subs: vec![
-						Trace {
-							depth: 3,
-							action: Action::Create(Create {
-								from: Address::from(6),
-								value: U256::from(7),
-								gas: U256::from(8),
-								init: vec![0x9]
-							}),
-							subs: vec![
-							],
-							result: Res::FailedCreate
-						},
-						Trace {
-							depth: 3,
-							action: Action::Create(Create {
-								from: Address::from(6),
-								value: U256::from(7),
-								gas: U256::from(8),
-								init: vec![0x9]
-							}),
-							subs: vec![
-							],
-							result: Res::FailedCreate
-						}
-					],
-					result: Res::FailedCreate
-				},
-				Trace {
-					depth: 3,
-					action: Action::Create(Create {
-						from: Address::from(6),
-						value: U256::from(7),
-						gas: U256::from(8),
-						init: vec![0x9]
-					}),
-					subs: vec![],
-					result: Res::FailedCreate,
-				}
-			],
-			result: Res::Call(CallResult {
-				gas_used: U256::from(10),
-				output: vec![0x11, 0x12]
-			})
-		};
-
-		let block_traces = FlatBlockTraces::from(BlockTraces::from(vec![trace]));
-		let transaction_traces: Vec<FlatTransactionTraces> = block_traces.into();
-		assert_eq!(transaction_traces.len(), 1);
-		let ordered_traces: Vec<FlatTrace> = transaction_traces.into_iter().nth(0).unwrap().into();
-		assert_eq!(ordered_traces.len(), 5);
-		assert_eq!(ordered_traces[0].trace_address, vec![]);
-		assert_eq!(ordered_traces[0].subtraces, 2);
-		assert_eq!(ordered_traces[1].trace_address, vec![0]);
-		assert_eq!(ordered_traces[1].subtraces, 2);
-		assert_eq!(ordered_traces[2].trace_address, vec![0, 0]);
-		assert_eq!(ordered_traces[2].subtraces, 0);
-		assert_eq!(ordered_traces[3].trace_address, vec![0, 1]);
-		assert_eq!(ordered_traces[3].subtraces, 0);
-		assert_eq!(ordered_traces[4].trace_address, vec![1]);
-		assert_eq!(ordered_traces[4].subtraces, 0);
-	}
-}

ethcore/src/trace/import.rs

@@ -17,12 +17,12 @@
 //! Traces import request.
 use util::H256;
 use header::BlockNumber;
-use trace::BlockTraces;
+use trace::FlatBlockTraces;
 
 /// Traces import request.
 pub struct ImportRequest {
 	/// Traces to import.
-	pub traces: BlockTraces,
+	pub traces: FlatBlockTraces,
 	/// Hash of traces block.
 	pub block_hash: H256,
 	/// Number of traces block.

ethcore/src/trace/mod.rs

@@ -16,22 +16,20 @@
 
 //! Tracing
 
-mod block;
 mod bloom;
 mod config;
 mod db;
 mod error;
 mod executive_tracer;
-pub mod flat;
 mod import;
 mod noop_tracer;
 
 pub use types::trace_types::*;
-pub use self::block::BlockTraces;
 pub use self::config::{Config, Switch};
 pub use self::db::TraceDB;
 pub use self::error::Error;
-pub use types::trace_types::trace::{Trace, VMTrace, VMOperation, VMExecutedOperation, MemoryDiff, StorageDiff};
+pub use types::trace_types::trace::{VMTrace, VMOperation, VMExecutedOperation, MemoryDiff, StorageDiff};
+pub use types::trace_types::flat::{FlatTrace, FlatTransactionTraces, FlatBlockTraces};
 pub use self::noop_tracer::{NoopTracer, NoopVMTracer};
 pub use self::executive_tracer::{ExecutiveTracer, ExecutiveVMTracer};
 pub use types::trace_types::filter::{Filter, AddressesFilter};
@@ -59,9 +57,7 @@ pub trait Tracer: Send {
 		call: Option<Call>,
 		gas_used: U256,
 		output: Option<Bytes>,
-		depth: usize,
-		subs: Vec<Trace>,
-		delegate_call: bool
+		subs: Vec<FlatTrace>,
 	);
 
 	/// Stores trace create info.
@@ -71,21 +67,23 @@ pub trait Tracer: Send {
 		gas_used: U256,
 		code: Option<Bytes>,
 		address: Address,
-		depth: usize,
-		subs: Vec<Trace>
+		subs: Vec<FlatTrace>
 	);
 
 	/// Stores failed call trace.
-	fn trace_failed_call(&mut self, call: Option<Call>, depth: usize, subs: Vec<Trace>, delegate_call: bool);
+	fn trace_failed_call(&mut self, call: Option<Call>, subs: Vec<FlatTrace>);
 
 	/// Stores failed create trace.
-	fn trace_failed_create(&mut self, create: Option<Create>, depth: usize, subs: Vec<Trace>);
+	fn trace_failed_create(&mut self, create: Option<Create>, subs: Vec<FlatTrace>);
+
+	/// Stores suicide info.
+	fn trace_suicide(&mut self, address: Address, balance: U256, refund_address: Address);
 
 	/// Spawn subtracer which will be used to trace deeper levels of execution.
 	fn subtracer(&self) -> Self where Self: Sized;
 
 	/// Consumes self and returns all traces.
-	fn traces(self) -> Vec<Trace>;
+	fn traces(self) -> Vec<FlatTrace>;
 }
 
 /// Used by executive to build VM traces.

ethcore/src/trace/noop_tracer.rs

@@ -18,8 +18,8 @@
 
 use util::{Bytes, Address, U256};
 use action_params::ActionParams;
-use trace::{Tracer, VMTracer};
-use trace::trace::{Trace, Call, Create, VMTrace};
+use trace::{Tracer, VMTracer, FlatTrace};
+use trace::trace::{Call, Create, VMTrace};
 
 /// Nonoperative tracer. Does not trace anything.
 pub struct NoopTracer;
@@ -37,29 +37,32 @@ impl Tracer for NoopTracer {
 		None
 	}
 
-	fn trace_call(&mut self, call: Option<Call>, _: U256, output: Option<Bytes>, _: usize, _: Vec<Trace>, _: bool) {
+	fn trace_call(&mut self, call: Option<Call>, _: U256, output: Option<Bytes>, _: Vec<FlatTrace>) {
 		assert!(call.is_none(), "self.prepare_trace_call().is_none(): so we can't be tracing: qed");
 		assert!(output.is_none(), "self.prepare_trace_output().is_none(): so we can't be tracing: qed");
 	}
 
-	fn trace_create(&mut self, create: Option<Create>, _: U256, code: Option<Bytes>, _: Address, _: usize, _: Vec<Trace>) {
+	fn trace_create(&mut self, create: Option<Create>, _: U256, code: Option<Bytes>, _: Address, _: Vec<FlatTrace>) {
 		assert!(create.is_none(), "self.prepare_trace_create().is_none(): so we can't be tracing: qed");
 		assert!(code.is_none(), "self.prepare_trace_output().is_none(): so we can't be tracing: qed");
 	}
 
-	fn trace_failed_call(&mut self, call: Option<Call>, _: usize, _: Vec<Trace>, _: bool) {
+	fn trace_failed_call(&mut self, call: Option<Call>, _: Vec<FlatTrace>) {
 		assert!(call.is_none(), "self.prepare_trace_call().is_none(): so we can't be tracing: qed");
 	}
 
-	fn trace_failed_create(&mut self, create: Option<Create>, _: usize, _: Vec<Trace>) {
+	fn trace_failed_create(&mut self, create: Option<Create>, _: Vec<FlatTrace>) {
 		assert!(create.is_none(), "self.prepare_trace_create().is_none(): so we can't be tracing: qed");
 	}
 
+	fn trace_suicide(&mut self, _address: Address, _balance: U256, _refund_address: Address) {
+	}
+
 	fn subtracer(&self) -> Self {
 		NoopTracer
 	}
 
-	fn traces(self) -> Vec<Trace> {
+	fn traces(self) -> Vec<FlatTrace> {
 		vec![]
 	}
 }

ethcore/src/types/executed.rs

@@ -18,7 +18,8 @@
 
 use util::numbers::*;
 use util::Bytes;
-use trace::{Trace, VMTrace};
+use util::rlp::*;
+use trace::{VMTrace, FlatTrace};
 use types::log_entry::LogEntry;
 use types::state_diff::StateDiff;
 use ipc::binary::BinaryConvertError;
@@ -26,6 +27,43 @@ use std::fmt;
 use std::mem;
 use std::collections::VecDeque;
 
+/// The type of the call-like instruction.
+#[derive(Debug, PartialEq, Clone, Binary)]
+pub enum CallType {
+	/// Not a CALL.
+	None,
+	/// CALL.
+	Call,
+	/// CALLCODE.
+	CallCode,
+	/// DELEGATECALL.
+	DelegateCall,
+}
+
+impl Encodable for CallType {
+	fn rlp_append(&self, s: &mut RlpStream) {
+		let v = match *self {
+			CallType::None => 0u32,
+			CallType::Call => 1,
+			CallType::CallCode => 2,
+			CallType::DelegateCall => 3,
+		};
+		s.append(&v);
+	}
+}
+
+impl Decodable for CallType {
+	fn decode<D>(decoder: &D) -> Result<Self, DecoderError> where D: Decoder {
+		decoder.as_rlp().as_val().and_then(|v| Ok(match v {
+			0u32 => CallType::None,
+			1 => CallType::Call,
+			2 => CallType::CallCode,
+			3 => CallType::DelegateCall,
+			_ => return Err(DecoderError::Custom("Invalid value of CallType item")),
+		}))
+	}
+}
+
 /// Transaction execution receipt.
 #[derive(Debug, PartialEq, Clone)]
 pub struct Executed {
@@ -59,7 +97,7 @@ pub struct Executed {
 	/// Transaction output.
 	pub output: Bytes,
 	/// The trace of this transaction.
-	pub trace: Option<Trace>,
+	pub trace: Vec<FlatTrace>,
 	/// The VM trace of this transaction.
 	pub vm_trace: Option<VMTrace>,
 	/// The state diff, if we traced it.
@@ -135,3 +173,12 @@ impl fmt::Display for ExecutionError {
 
 /// Transaction execution result.
 pub type ExecutionResult = Result<Executed, ExecutionError>;
+
+#[test]
+fn should_encode_and_decode_call_type() {
+	use util::rlp;
+	let original = CallType::Call;
+	let encoded = rlp::encode(&original);
+	let decoded = rlp::decode(&encoded);
+	assert_eq!(original, decoded);
+}

ethcore/src/types/ids.rs

@@ -33,7 +33,9 @@ pub enum BlockID {
 	/// Earliest block (genesis).
 	Earliest,
 	/// Latest mined block.
-	Latest
+	Latest,
+	/// Pending block.
+	Pending,
 }
 
 /// Uniquely identifies transaction.

ethcore/src/types/trace_types/filter.rs

@@ -22,7 +22,7 @@ use util::{Address, FixedHash};
 use util::sha3::Hashable;
 use basic_types::LogBloom;
 use trace::flat::FlatTrace;
-use types::trace_types::trace::Action;
+use types::trace_types::trace::{Action, Res};
 use ipc::binary::BinaryConvertError;
 use std::mem;
 use std::collections::VecDeque;
@@ -30,7 +30,7 @@ use std::collections::VecDeque;
 /// Addresses filter.
 ///
 /// Used to create bloom possibilities and match filters.
-#[derive(Binary)]
+#[derive(Debug, Binary)]
 pub struct AddressesFilter {
 	list: Vec<Address>
 }
@@ -58,7 +58,7 @@ impl AddressesFilter {
 			true => vec![LogBloom::new()],
 			false => self.list.iter()
 				.map(|address| LogBloom::from_bloomed(&address.sha3()))
-				.collect()
+				.collect(),
 		}
 	}
 
@@ -71,12 +71,12 @@ impl AddressesFilter {
 				.flat_map(|bloom| self.list.iter()
 					.map(|address| bloom.with_bloomed(&address.sha3()))
 					.collect::<Vec<_>>())
-				.collect()
+				.collect(),
 		}
 	}
 }
 
-#[derive(Binary)]
+#[derive(Debug, Binary)]
 /// Traces filter.
 pub struct Filter {
 	/// Block range.
@@ -110,29 +110,40 @@ impl Filter {
 
 	/// Returns true if given trace matches the filter.
 	pub fn matches(&self, trace: &FlatTrace) -> bool {
-		match trace.action {
+		let action = match trace.action {
 			Action::Call(ref call) => {
 				let from_matches = self.from_address.matches(&call.from);
 				let to_matches = self.to_address.matches(&call.to);
 				from_matches && to_matches
-			},
+			}
 			Action::Create(ref create) => {
 				let from_matches = self.from_address.matches(&create.from);
 				let to_matches = self.to_address.matches_all();
 				from_matches && to_matches
+			},
+			Action::Suicide(ref suicide) => {
+				let from_matches = self.from_address.matches(&suicide.address);
+				let to_matches = self.to_address.matches(&suicide.refund_address);
+				from_matches && to_matches
 			}
+		};
+
+		action || match trace.result {
+			Res::Create(ref create) => self.to_address.matches(&create.address),
+			_ => false
 		}
 	}
 }
 
 #[cfg(test)]
 mod tests {
-	use util::{FixedHash, Address, U256};
+	use util::{FixedHash, Address};
 	use util::sha3::Hashable;
-	use trace::trace::{Action, Call, Res};
+	use trace::trace::{Action, Call, Res, Create, CreateResult, Suicide};
 	use trace::flat::FlatTrace;
 	use trace::{Filter, AddressesFilter};
 	use basic_types::LogBloom;
+	use types::executed::CallType;
 
 	#[test]
 	fn empty_trace_filter_bloom_possibilities() {
@@ -270,14 +281,15 @@ mod tests {
 
 		let trace = FlatTrace {
 			action: Action::Call(Call {
-				from: Address::from(1),
-				to: Address::from(2),
-				value: U256::from(3),
-				gas: U256::from(4),
+				from: 1.into(),
+				to: 2.into(),
+				value: 3.into(),
+				gas: 4.into(),
 				input: vec![0x5],
+				call_type: CallType::Call,
 			}),
 			result: Res::FailedCall,
-			trace_address: vec![0],
+			trace_address: vec![0].into_iter().collect(),
 			subtraces: 0,
 		};
 
@@ -288,5 +300,48 @@ mod tests {
 		assert!(f4.matches(&trace));
 		assert!(f5.matches(&trace));
 		assert!(!f6.matches(&trace));
+
+		let trace = FlatTrace {
+			action: Action::Create(Create {
+				from: 1.into(),
+				value: 3.into(),
+				gas: 4.into(),
+				init: vec![0x5],
+			}),
+			result: Res::Create(CreateResult {
+				gas_used: 10.into(),
+				code: vec![],
+				address: 2.into(),
+			}),
+			trace_address: vec![0].into_iter().collect(),
+			subtraces: 0,
+		};
+
+		assert!(f0.matches(&trace));
+		assert!(f1.matches(&trace));
+		assert!(f2.matches(&trace));
+		assert!(f3.matches(&trace));
+		assert!(f4.matches(&trace));
+		assert!(f5.matches(&trace));
+		assert!(!f6.matches(&trace));
+
+		let trace = FlatTrace {
+			action: Action::Suicide(Suicide {
+				address: 1.into(),
+				refund_address: 2.into(),
+				balance: 3.into(),
+			}),
+			result: Res::None,
+			trace_address: vec![].into_iter().collect(),
+			subtraces: 0
+		};
+
+		assert!(f0.matches(&trace));
+		assert!(f1.matches(&trace));
+		assert!(f2.matches(&trace));
+		assert!(f3.matches(&trace));
+		assert!(f4.matches(&trace));
+		assert!(f5.matches(&trace));
+		assert!(!f6.matches(&trace));
 	}
 }

ethcore/src/types/trace_types/flat.rs

@@ -0,0 +1,210 @@
+// Copyright 2015, 2016 Ethcore (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/>.
+
+//! Flat trace module
+
+use std::collections::VecDeque;
+use std::mem;
+use ipc::binary::BinaryConvertError;
+use util::rlp::*;
+use basic_types::LogBloom;
+use super::trace::{Action, Res};
+
+/// Trace localized in vector of traces produced by a single transaction.
+///
+/// Parent and children indexes refer to positions in this vector.
+#[derive(Debug, PartialEq, Clone, Binary)]
+pub struct FlatTrace {
+	/// Type of action performed by a transaction.
+	pub action: Action,
+	/// Result of this action.
+	pub result: Res,
+	/// Number of subtraces.
+	pub subtraces: usize,
+	/// Exact location of trace.
+	///
+	/// [index in root, index in first CALL, index in second CALL, ...]
+	pub trace_address: VecDeque<usize>,
+}
+
+impl FlatTrace {
+	/// Returns bloom of the trace.
+	pub fn bloom(&self) -> LogBloom {
+		self.action.bloom() | self.result.bloom()
+	}
+}
+
+impl Encodable for FlatTrace {
+	fn rlp_append(&self, s: &mut RlpStream) {
+		s.begin_list(4);
+		s.append(&self.action);
+		s.append(&self.result);
+		s.append(&self.subtraces);
+		s.append(&self.trace_address.clone().into_iter().collect::<Vec<_>>());
+	}
+}
+
+impl Decodable for FlatTrace {
+	fn decode<D>(decoder: &D) -> Result<Self, DecoderError> where D: Decoder {
+		let d = decoder.as_rlp();
+		let v: Vec<usize> = try!(d.val_at(3));
+		let res = FlatTrace {
+			action: try!(d.val_at(0)),
+			result: try!(d.val_at(1)),
+			subtraces: try!(d.val_at(2)),
+			trace_address: v.into_iter().collect(),
+		};
+
+		Ok(res)
+	}
+}
+
+/// Represents all traces produced by a single transaction.
+#[derive(Debug, PartialEq, Clone)]
+pub struct FlatTransactionTraces(Vec<FlatTrace>);
+
+impl From<Vec<FlatTrace>> for FlatTransactionTraces {
+	fn from(v: Vec<FlatTrace>) -> Self {
+		FlatTransactionTraces(v)
+	}
+}
+
+impl FlatTransactionTraces {
+	/// Returns bloom of the trace.
+	pub fn bloom(&self) -> LogBloom {
+		self.0.iter().fold(Default::default(), | bloom, trace | bloom | trace.bloom())
+	}
+}
+
+impl Encodable for FlatTransactionTraces {
+	fn rlp_append(&self, s: &mut RlpStream) {
+		s.append(&self.0);
+	}
+}
+
+impl Decodable for FlatTransactionTraces {
+	fn decode<D>(decoder: &D) -> Result<Self, DecoderError> where D: Decoder {
+		Ok(FlatTransactionTraces(try!(Decodable::decode(decoder))))
+	}
+}
+
+impl Into<Vec<FlatTrace>> for FlatTransactionTraces {
+	fn into(self) -> Vec<FlatTrace> {
+		self.0
+	}
+}
+
+/// Represents all traces produced by transactions in a single block.
+#[derive(Debug, PartialEq, Clone)]
+pub struct FlatBlockTraces(Vec<FlatTransactionTraces>);
+
+impl From<Vec<FlatTransactionTraces>> for FlatBlockTraces {
+	fn from(v: Vec<FlatTransactionTraces>) -> Self {
+		FlatBlockTraces(v)
+	}
+}
+
+impl FlatBlockTraces {
+	/// Returns bloom of the trace.
+	pub fn bloom(&self) -> LogBloom {
+		self.0.iter().fold(Default::default(), | bloom, tx_traces | bloom | tx_traces.bloom())
+	}
+}
+
+impl Encodable for FlatBlockTraces {
+	fn rlp_append(&self, s: &mut RlpStream) {
+		s.append(&self.0);
+	}
+}
+
+impl Decodable for FlatBlockTraces {
+	fn decode<D>(decoder: &D) -> Result<Self, DecoderError> where D: Decoder {
+		Ok(FlatBlockTraces(try!(Decodable::decode(decoder))))
+	}
+}
+
+impl Into<Vec<FlatTransactionTraces>> for FlatBlockTraces {
+	fn into(self) -> Vec<FlatTransactionTraces> {
+		self.0
+	}
+}
+
+#[cfg(test)]
+mod tests {
+	use super::{FlatBlockTraces, FlatTransactionTraces, FlatTrace};
+	use trace::trace::{Action, Res, CallResult, Call, Suicide};
+	use types::executed::CallType;
+
+	#[test]
+	fn test_trace_serialization() {
+		use util::rlp;
+		// block #51921
+
+		let flat_trace = FlatTrace {
+			action: Action::Call(Call {
+				from: "8dda5e016e674683241bf671cced51e7239ea2bc".parse().unwrap(),
+				to: "37a5e19cc2d49f244805d5c268c0e6f321965ab9".parse().unwrap(),
+				value: "3627e8f712373c0000".parse().unwrap(),
+				gas: 0x03e8.into(),
+				input: vec![],
+				call_type: CallType::Call,
+			}),
+			result: Res::Call(CallResult {
+				gas_used: 0.into(),
+				output: vec![],
+			}),
+			trace_address: Default::default(),
+			subtraces: 0,
+		};
+
+		let flat_trace1 = FlatTrace {
+			action: Action::Call(Call {
+				from: "3d0768da09ce77d25e2d998e6a7b6ed4b9116c2d".parse().unwrap(),
+				to: "412fda7643b37d436cb40628f6dbbb80a07267ed".parse().unwrap(),
+				value: 0.into(),
+				gas: 0x010c78.into(),
+				input: vec![0x41, 0xc0, 0xe1, 0xb5],
+				call_type: CallType::Call,
+			}),
+			result: Res::Call(CallResult {
+				gas_used: 0x0127.into(),
+				output: vec![],
+			}),
+			trace_address: Default::default(),
+			subtraces: 1,
+		};
+
+		let flat_trace2 = FlatTrace {
+			action: Action::Suicide(Suicide {
+				address: "412fda7643b37d436cb40628f6dbbb80a07267ed".parse().unwrap(),
+				balance: 0.into(),
+				refund_address: "3d0768da09ce77d25e2d998e6a7b6ed4b9116c2d".parse().unwrap(),
+			}),
+			result: Res::None,
+			trace_address: vec![0].into_iter().collect(),
+			subtraces: 0,
+		};
+
+		let block_traces = FlatBlockTraces(vec![
+			FlatTransactionTraces(vec![flat_trace]),
+			FlatTransactionTraces(vec![flat_trace1, flat_trace2])
+		]);
+
+		let encoded = rlp::encode(&block_traces);
+		let decoded = rlp::decode(&encoded);
+		assert_eq!(block_traces, decoded);
+	}
+}

ethcore/src/types/trace_types/mod.rs

@@ -17,5 +17,6 @@
 //! Types used in the public api
 
 pub mod filter;
+pub mod flat;
 pub mod trace;
 pub mod localized;

ethcore/src/types/trace_types/trace.rs

@@ -21,6 +21,7 @@ use util::rlp::*;
 use util::sha3::Hashable;
 use action_params::ActionParams;
 use basic_types::LogBloom;
+use types::executed::CallType;
 use ipc::binary::BinaryConvertError;
 use std::mem;
 use std::collections::VecDeque;
@@ -87,6 +88,13 @@ impl Decodable for CreateResult {
 	}
 }
 
+impl CreateResult {
+	/// Returns bloom.
+	pub fn bloom(&self) -> LogBloom {
+		LogBloom::from_bloomed(&self.address.sha3())
+	}
+}
+
 /// Description of a _call_ action, either a `CALL` operation or a message transction.
 #[derive(Debug, Clone, PartialEq, Binary)]
 pub struct Call {
@@ -100,6 +108,8 @@ pub struct Call {
 	pub gas: U256,
 	/// The input data provided to the call.
 	pub input: Bytes,
+	/// The type of the call.
+	pub call_type: CallType,
 }
 
 impl From<ActionParams> for Call {
@@ -110,18 +120,20 @@ impl From<ActionParams> for Call {
 			value: p.value.value(),
 			gas: p.gas,
 			input: p.data.unwrap_or_else(Vec::new),
+			call_type: p.call_type,
 		}
 	}
 }
 
 impl Encodable for Call {
 	fn rlp_append(&self, s: &mut RlpStream) {
-		s.begin_list(5);
+		s.begin_list(6);
 		s.append(&self.from);
 		s.append(&self.to);
 		s.append(&self.value);
 		s.append(&self.gas);
 		s.append(&self.input);
+		s.append(&self.call_type);
 	}
 }
 
@@ -134,6 +146,7 @@ impl Decodable for Call {
 			value: try!(d.val_at(2)),
 			gas: try!(d.val_at(3)),
 			input: try!(d.val_at(4)),
+			call_type: try!(d.val_at(5)),
 		};
 
 		Ok(res)
@@ -205,6 +218,48 @@ impl Create {
 	}
 }
 
+/// Suicide action.
+#[derive(Debug, Clone, PartialEq, Binary)]
+pub struct Suicide {
+	/// Suicided address.
+	pub address: Address,
+	/// Suicided contract heir.
+	pub refund_address: Address,
+	/// Balance of the contract just before suicide.
+	pub balance: U256,
+}
+
+impl Suicide {
+	/// Return suicide action bloom.
+	pub fn bloom(&self) -> LogBloom {
+		LogBloom::from_bloomed(&self.address.sha3())
+			.with_bloomed(&self.refund_address.sha3())
+	}
+}
+
+impl Encodable for Suicide {
+	fn rlp_append(&self, s: &mut RlpStream) {
+		s.begin_list(3);
+		s.append(&self.address);
+		s.append(&self.refund_address);
+		s.append(&self.balance);
+	}
+}
+
+impl Decodable for Suicide {
+	fn decode<D>(decoder: &D) -> Result<Self, DecoderError> where D: Decoder {
+		let d = decoder.as_rlp();
+		let res = Suicide {
+			address: try!(d.val_at(0)),
+			refund_address: try!(d.val_at(1)),
+			balance: try!(d.val_at(2)),
+		};
+
+		Ok(res)
+	}
+}
+
+
 /// Description of an action that we trace; will be either a call or a create.
 #[derive(Debug, Clone, PartialEq, Binary)]
 pub enum Action {
@@ -212,6 +267,8 @@ pub enum Action {
 	Call(Call),
 	/// It's a create action.
 	Create(Create),
+	/// Suicide.
+	Suicide(Suicide),
 }
 
 impl Encodable for Action {
@@ -225,6 +282,10 @@ impl Encodable for Action {
 			Action::Create(ref create) => {
 				s.append(&1u8);
 				s.append(create);
+			},
+			Action::Suicide(ref suicide) => {
+				s.append(&2u8);
+				s.append(suicide);
 			}
 		}
 	}
@@ -237,6 +298,7 @@ impl Decodable for Action {
 		match action_type {
 			0 => d.val_at(1).map(Action::Call),
 			1 => d.val_at(1).map(Action::Create),
+			2 => d.val_at(1).map(Action::Suicide),
 			_ => Err(DecoderError::Custom("Invalid action type.")),
 		}
 	}
@@ -248,6 +310,7 @@ impl Action {
 		match *self {
 			Action::Call(ref call) => call.bloom(),
 			Action::Create(ref create) => create.bloom(),
+			Action::Suicide(ref suicide) => suicide.bloom(),
 		}
 	}
 }
@@ -263,6 +326,8 @@ pub enum Res {
 	FailedCall,
 	/// Failed create.
 	FailedCreate,
+	/// None
+	None,
 }
 
 impl Encodable for Res {
@@ -285,6 +350,10 @@ impl Encodable for Res {
 			Res::FailedCreate => {
 				s.begin_list(1);
 				s.append(&3u8);
+			},
+			Res::None => {
+				s.begin_list(1);
+				s.append(&4u8);
 			}
 		}
 	}
@@ -299,53 +368,19 @@ impl Decodable for Res {
 			1 => d.val_at(1).map(Res::Create),
 			2 => Ok(Res::FailedCall),
 			3 => Ok(Res::FailedCreate),
+			4 => Ok(Res::None),
 			_ => Err(DecoderError::Custom("Invalid result type.")),
 		}
 	}
 }
 
-#[derive(Debug, Clone, PartialEq, Binary)]
-/// A trace; includes a description of the action being traced and sub traces of each interior action.
-pub struct Trace {
-	/// The number of EVM execution environments active when this action happened; 0 if it's
-	/// the outer action of the transaction.
-	pub depth: usize,
-	/// The action being performed.
-	pub action: Action,
-	/// The sub traces for each interior action performed as part of this call.
-	pub subs: Vec<Trace>,
-	/// The result of the performed action.
-	pub result: Res,
-}
-
-impl Encodable for Trace {
-	fn rlp_append(&self, s: &mut RlpStream) {
-		s.begin_list(4);
-		s.append(&self.depth);
-		s.append(&self.action);
-		s.append(&self.subs);
-		s.append(&self.result);
-	}
-}
-
-impl Decodable for Trace {
-	fn decode<D>(decoder: &D) -> Result<Self, DecoderError> where D: Decoder {
-		let d = decoder.as_rlp();
-		let res = Trace {
-			depth: try!(d.val_at(0)),
-			action: try!(d.val_at(1)),
-			subs: try!(d.val_at(2)),
-			result: try!(d.val_at(3)),
-		};
-
-		Ok(res)
-	}
-}
-
-impl Trace {
-	/// Returns trace bloom.
+impl Res {
+	/// Returns result bloom.
 	pub fn bloom(&self) -> LogBloom {
-		self.subs.iter().fold(self.action.bloom(), |b, s| b | s.bloom())
+		match *self {
+			Res::Create(ref create) => create.bloom(),
+			Res::Call(_) | Res::FailedCall | Res::FailedCreate | Res::None => Default::default(),
+		}
 	}
 }
 
@@ -438,7 +473,7 @@ impl Decodable for VMExecutedOperation {
 	}
 }
 
-#[derive(Debug, Clone, PartialEq, Binary)]
+#[derive(Debug, Clone, PartialEq, Binary, Default)]
 /// A record of the execution of a single VM operation.
 pub struct VMOperation {
 	/// The program counter.
@@ -513,84 +548,3 @@ impl Decodable for VMTrace {
 	}
 }
 
-#[cfg(test)]
-mod tests {
-	use util::{Address, U256, FixedHash};
-	use util::rlp::{encode, decode};
-	use util::sha3::Hashable;
-	use trace::trace::{Call, CallResult, Create, Res, Action, Trace};
-
-	#[test]
-	fn traces_rlp() {
-		let trace = Trace {
-			depth: 2,
-			action: Action::Call(Call {
-				from: Address::from(1),
-				to: Address::from(2),
-				value: U256::from(3),
-				gas: U256::from(4),
-				input: vec![0x5]
-			}),
-			subs: vec![
-				Trace {
-					depth: 3,
-					action: Action::Create(Create {
-						from: Address::from(6),
-						value: U256::from(7),
-						gas: U256::from(8),
-						init: vec![0x9]
-					}),
-					subs: vec![],
-					result: Res::FailedCreate
-				}
-			],
-			result: Res::Call(CallResult {
-				gas_used: U256::from(10),
-				output: vec![0x11, 0x12]
-			})
-		};
-
-		let encoded = encode(&trace);
-		let decoded: Trace = decode(&encoded);
-		assert_eq!(trace, decoded);
-	}
-
-	#[test]
-	fn traces_bloom() {
-		let trace = Trace {
-			depth: 2,
-			action: Action::Call(Call {
-				from: Address::from(1),
-				to: Address::from(2),
-				value: U256::from(3),
-				gas: U256::from(4),
-				input: vec![0x5]
-			}),
-			subs: vec![
-				Trace {
-					depth: 3,
-					action: Action::Create(Create {
-						from: Address::from(6),
-						value: U256::from(7),
-						gas: U256::from(8),
-						init: vec![0x9]
-					}),
-					subs: vec![],
-					result: Res::FailedCreate
-				}
-			],
-			result: Res::Call(CallResult {
-				gas_used: U256::from(10),
-				output: vec![0x11, 0x12]
-			})
-		};
-
-		let bloom = trace.bloom();
-
-		// right now only addresses are bloomed
-		assert!(bloom.contains_bloomed(&Address::from(1).sha3()));
-		assert!(bloom.contains_bloomed(&Address::from(2).sha3()));
-		assert!(!bloom.contains_bloomed(&Address::from(20).sha3()));
-		assert!(bloom.contains_bloomed(&Address::from(6).sha3()));
-	}
-}

ethcore/src/types/transaction.rs

@@ -91,7 +91,7 @@ impl Transaction {
 
 impl From<ethjson::state::Transaction> for SignedTransaction {
 	fn from(t: ethjson::state::Transaction) -> Self {
-		let to: Option<_> = t.to.into();
+		let to: Option<ethjson::hash::Address> = t.to.into();
 		Transaction {
 			nonce: t.nonce.into(),
 			gas_price: t.gas_price.into(),
@@ -108,7 +108,7 @@ impl From<ethjson::state::Transaction> for SignedTransaction {
 
 impl From<ethjson::transaction::Transaction> for SignedTransaction {
 	fn from(t: ethjson::transaction::Transaction) -> Self {
-		let to: Option<_> = t.to.into();
+		let to: Option<ethjson::hash::Address> = t.to.into();
 		SignedTransaction {
 			unsigned: Transaction {
 				nonce: t.nonce.into(),

ethcore/src/verification/canon_verifier.rs

@@ -24,11 +24,11 @@ use super::verification;
 pub struct CanonVerifier;
 
 impl Verifier for CanonVerifier {
-	fn verify_block_family(header: &Header, bytes: &[u8], engine: &Engine, bc: &BlockProvider) -> Result<(), Error> {
+	fn verify_block_family(&self, header: &Header, bytes: &[u8], engine: &Engine, bc: &BlockProvider) -> Result<(), Error> {
 		verification::verify_block_family(header, bytes, engine, bc)
 	}
 
-	fn verify_block_final(expected: &Header, got: &Header) -> Result<(), Error> {
+	fn verify_block_final(&self, expected: &Header, got: &Header) -> Result<(), Error> {
 		verification::verify_block_final(expected, got)
 	}
 }

ethcore/src/verification/mod.rs

@@ -17,11 +17,32 @@
 pub mod verification;
 pub mod verifier;
 mod canon_verifier;
-#[cfg(test)]
 mod noop_verifier;
 
 pub use self::verification::*;
 pub use self::verifier::Verifier;
 pub use self::canon_verifier::CanonVerifier;
-#[cfg(test)]
 pub use self::noop_verifier::NoopVerifier;
+
+/// Verifier type.
+#[derive(Debug)]
+pub enum VerifierType {
+	/// Verifies block normally.
+	Canon,
+	/// Does not verify block at all.
+	/// Used in tests.
+	Noop,
+}
+
+impl Default for VerifierType {
+	fn default() -> Self {
+		VerifierType::Canon
+	}
+}
+
+pub fn new(v: VerifierType) -> Box<Verifier> {
+	match v {
+		VerifierType::Canon => Box::new(CanonVerifier),
+		VerifierType::Noop => Box::new(NoopVerifier),
+	}
+}

ethcore/src/verification/noop_verifier.rs

@@ -24,11 +24,11 @@ use super::Verifier;
 pub struct NoopVerifier;
 
 impl Verifier for NoopVerifier {
-	fn verify_block_family(_header: &Header, _bytes: &[u8], _engine: &Engine, _bc: &BlockProvider) -> Result<(), Error> {
+	fn verify_block_family(&self, _header: &Header, _bytes: &[u8], _engine: &Engine, _bc: &BlockProvider) -> Result<(), Error> {
 		Ok(())
 	}
 
-	fn verify_block_final(_expected: &Header, _got: &Header) -> Result<(), Error> {
+	fn verify_block_final(&self, _expected: &Header, _got: &Header) -> Result<(), Error> {
 		Ok(())
 	}
 }

ethcore/src/verification/verification.rs

@@ -40,7 +40,8 @@ pub fn verify_block_basic(header: &Header, bytes: &[u8], engine: &Engine) -> Res
 	try!(verify_header(&header, engine));
 	try!(verify_block_integrity(bytes, &header.transactions_root, &header.uncles_hash));
 	try!(engine.verify_block_basic(&header, Some(bytes)));
-	for u in Rlp::new(bytes).at(2).iter().map(|rlp| rlp.as_val::<Header>()) {
+	for u in try!(UntrustedRlp::new(bytes).at(2)).iter().map(|rlp| rlp.as_val::<Header>()) {
+		let u = try!(u);
 		try!(verify_header(&u, engine));
 		try!(engine.verify_block_basic(&u, None));
 	}
@@ -58,8 +59,8 @@ pub fn verify_block_basic(header: &Header, bytes: &[u8], engine: &Engine) -> Res
 /// Returns a `PreverifiedBlock` structure populated with transactions
 pub fn verify_block_unordered(header: Header, bytes: Bytes, engine: &Engine) -> Result<PreverifiedBlock, Error> {
 	try!(engine.verify_block_unordered(&header, Some(&bytes)));
-	for u in Rlp::new(&bytes).at(2).iter().map(|rlp| rlp.as_val::<Header>()) {
-		try!(engine.verify_block_unordered(&u, None));
+	for u in try!(UntrustedRlp::new(&bytes).at(2)).iter().map(|rlp| rlp.as_val::<Header>()) {
+		try!(engine.verify_block_unordered(&try!(u), None));
 	}
 	// Verify transactions.
 	let mut transactions = Vec::new();
@@ -84,7 +85,7 @@ pub fn verify_block_family(header: &Header, bytes: &[u8], engine: &Engine, bc: &
 	try!(verify_parent(&header, &parent));
 	try!(engine.verify_block_family(&header, &parent, Some(bytes)));
 
-	let num_uncles = Rlp::new(bytes).at(2).item_count();
+	let num_uncles = try!(UntrustedRlp::new(bytes).at(2)).item_count();
 	if num_uncles != 0 {
 		if num_uncles > engine.maximum_uncle_count() {
 			return Err(From::from(BlockError::TooManyUncles(OutOfBounds { min: None, max: Some(engine.maximum_uncle_count()), found: num_uncles })));
@@ -106,7 +107,8 @@ pub fn verify_block_family(header: &Header, bytes: &[u8], engine: &Engine, bc: &
 			}
 		}
 
-		for uncle in Rlp::new(bytes).at(2).iter().map(|rlp| rlp.as_val::<Header>()) {
+		for uncle in try!(UntrustedRlp::new(bytes).at(2)).iter().map(|rlp| rlp.as_val::<Header>()) {
+			let uncle = try!(uncle);
 			if excluded.contains(&uncle.hash()) {
 				return Err(From::from(BlockError::UncleInChain(uncle.hash())))
 			}
@@ -210,13 +212,13 @@ fn verify_parent(header: &Header, parent: &Header) -> Result<(), Error> {
 
 /// Verify block data against header: transactions root and uncles hash.
 fn verify_block_integrity(block: &[u8], transactions_root: &H256, uncles_hash: &H256) -> Result<(), Error> {
-	let block = Rlp::new(block);
-	let tx = block.at(1);
+	let block = UntrustedRlp::new(block);
+	let tx = try!(block.at(1));
 	let expected_root = &ordered_trie_root(tx.iter().map(|r| r.as_raw().to_vec()).collect()); //TODO: get rid of vectors here
 	if expected_root != transactions_root {
 		return Err(From::from(BlockError::InvalidTransactionsRoot(Mismatch { expected: expected_root.clone(), found: transactions_root.clone() })))
 	}
-	let expected_uncles = &block.at(2).as_raw().sha3();
+	let expected_uncles = &try!(block.at(2)).as_raw().sha3();
 	if expected_uncles != uncles_hash {
 		return Err(From::from(BlockError::InvalidUnclesHash(Mismatch { expected: expected_uncles.clone(), found: uncles_hash.clone() })))
 	}

ethcore/src/verification/verifier.rs

@@ -21,6 +21,6 @@ use header::Header;
 
 /// Should be used to verify blocks.
 pub trait Verifier: Send + Sync {
-	fn verify_block_family(header: &Header, bytes: &[u8], engine: &Engine, bc: &BlockProvider) -> Result<(), Error>;
-	fn verify_block_final(expected: &Header, got: &Header) -> Result<(), Error>;
+	fn verify_block_family(&self, header: &Header, bytes: &[u8], engine: &Engine, bc: &BlockProvider) -> Result<(), Error>;
+	fn verify_block_final(&self, expected: &Header, got: &Header) -> Result<(), Error>;
 }

ethcore/src/views.rs

@@ -1,339 +0,0 @@
-// Copyright 2015, 2016 Ethcore (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/>.
-
-//! Block oriented views onto rlp.
-use util::*;
-use header::*;
-use transaction::*;
-
-/// View onto transaction rlp.
-pub struct TransactionView<'a> {
-	rlp: Rlp<'a>
-}
-
-impl<'a> TransactionView<'a> {
-	/// Creates new view onto block from raw bytes.
-	pub fn new(bytes: &'a [u8]) -> TransactionView<'a> {
-		TransactionView {
-			rlp: Rlp::new(bytes)
-		}
-	}
-
-	/// Creates new view onto block from rlp.
-	pub fn new_from_rlp(rlp: Rlp<'a>) -> TransactionView<'a> {
-		TransactionView {
-			rlp: rlp
-		}
-	}
-
-	/// Return reference to underlaying rlp.
-	pub fn rlp(&self) -> &Rlp<'a> {
-		&self.rlp
-	}
-
-	/// Get the nonce field of the transaction.
-	pub fn nonce(&self) -> U256 { self.rlp.val_at(0) }
-
-	/// Get the gas_price field of the transaction.
-	pub fn gas_price(&self) -> U256 { self.rlp.val_at(1) }
-
-	/// Get the gas field of the transaction.
-	pub fn gas(&self) -> U256 { self.rlp.val_at(2) }
-
-	/// Get the value field of the transaction.
-	pub fn value(&self) -> U256 { self.rlp.val_at(4) }
-
-	/// Get the data field of the transaction.
-	pub fn data(&self) -> Bytes { self.rlp.val_at(5) }
-
-	/// Get the v field of the transaction.
-	pub fn v(&self) -> u8 { let r: u16 = self.rlp.val_at(6); r as u8 }
-
-	/// Get the r field of the transaction.
-	pub fn r(&self) -> U256 { self.rlp.val_at(7) }
-
-	/// Get the s field of the transaction.
-	pub fn s(&self) -> U256 { self.rlp.val_at(8) }
-
-	// TODO: something like pub fn action(&self) -> Action { self.rlp.val_at(3) }
-}
-
-impl<'a> Hashable for TransactionView<'a> {
-	fn sha3(&self) -> H256 {
-		self.rlp.as_raw().sha3()
-	}
-}
-
-/// View onto transaction rlp.
-pub struct AccountView<'a> {
-	rlp: Rlp<'a>
-}
-
-impl<'a> AccountView<'a> {
-	/// Creates new view onto block from raw bytes.
-	pub fn new(bytes: &'a [u8]) -> AccountView<'a> {
-		AccountView {
-			rlp: Rlp::new(bytes)
-		}
-	}
-
-	/// Creates new view onto block from rlp.
-	pub fn new_from_rlp(rlp: Rlp<'a>) -> AccountView<'a> {
-		AccountView {
-			rlp: rlp
-		}
-	}
-
-	/// Return reference to underlaying rlp.
-	pub fn rlp(&self) -> &Rlp<'a> {
-		&self.rlp
-	}
-
-	/// Get the nonce field of the transaction.
-	pub fn nonce(&self) -> U256 { self.rlp.val_at(0) }
-
-	/// Get the gas_price field of the transaction.
-	pub fn balance(&self) -> U256 { self.rlp.val_at(1) }
-
-	/// Get the gas field of the transaction.
-	pub fn storage_root(&self) -> H256 { self.rlp.val_at(2) }
-
-	/// Get the value field of the transaction.
-	pub fn code_hash(&self) -> H256 { self.rlp.val_at(3) }
-}
-
-/// View onto block rlp.
-pub struct BlockView<'a> {
-	rlp: Rlp<'a>
-}
-
-impl<'a> BlockView<'a> {
-	/// Creates new view onto block from raw bytes.
-	pub fn new(bytes: &'a [u8]) -> BlockView<'a> {
-		BlockView {
-			rlp: Rlp::new(bytes)
-		}
-	}
-
-	/// Creates new view onto block from rlp.
-	pub fn new_from_rlp(rlp: Rlp<'a>) -> BlockView<'a> {
-		BlockView {
-			rlp: rlp
-		}
-	}
-
-	/// Return reference to underlaying rlp.
-	pub fn rlp(&self) -> &Rlp<'a> {
-		&self.rlp
-	}
-
-	/// Create new Header object from header rlp.
-	pub fn header(&self) -> Header {
-		self.rlp.val_at(0)
-	}
-
-	/// Create new header view obto block head rlp.
-	pub fn header_view(&self) -> HeaderView<'a> {
-		HeaderView::new_from_rlp(self.rlp.at(0))
-	}
-
-	/// Return List of transactions in given block.
-	pub fn transactions(&self) -> Vec<SignedTransaction> {
-		self.rlp.val_at(1)
-	}
-
-	/// Return List of transactions with additional localization info.
-	pub fn localized_transactions(&self) -> Vec<LocalizedTransaction> {
-		let header = self.header_view();
-		let block_hash = header.sha3();
-		let block_number = header.number();
-		self.transactions()
-			.into_iter()
-			.enumerate()
-			.map(|(i, t)| LocalizedTransaction {
-				signed: t,
-				block_hash: block_hash.clone(),
-				block_number: block_number,
-				transaction_index: i
-			}).collect()
-	}
-
-	/// Return number of transactions in given block, without deserializing them.
-	pub fn transactions_count(&self) -> usize {
-		self.rlp.at(1).iter().count()
-	}
-
-	/// Return List of transactions in given block.
-	pub fn transaction_views(&self) -> Vec<TransactionView> {
-		self.rlp.at(1).iter().map(TransactionView::new_from_rlp).collect()
-	}
-
-	/// Return transaction hashes.
-	pub fn transaction_hashes(&self) -> Vec<H256> {
-		self.rlp.at(1).iter().map(|rlp| rlp.as_raw().sha3()).collect()
-	}
-
-	/// Returns transaction at given index without deserializing unnecessary data.
-	pub fn transaction_at(&self, index: usize) -> Option<SignedTransaction> {
-		self.rlp.at(1).iter().nth(index).map(|rlp| rlp.as_val())
-	}
-
-	/// Returns localized transaction at given index.
-	pub fn localized_transaction_at(&self, index: usize) -> Option<LocalizedTransaction> {
-		let header = self.header_view();
-		let block_hash = header.sha3();
-		let block_number = header.number();
-		self.transaction_at(index).map(|t| LocalizedTransaction {
-			signed: t,
-			block_hash: block_hash,
-			block_number: block_number,
-			transaction_index: index
-		})
-	}
-
-	/// Return list of uncles of given block.
-	pub fn uncles(&self) -> Vec<Header> {
-		self.rlp.val_at(2)
-	}
-
-	/// Return number of uncles in given block, without deserializing them.
-	pub fn uncles_count(&self) -> usize {
-		self.rlp.at(2).iter().count()
-	}
-
-	/// Return List of transactions in given block.
-	pub fn uncle_views(&self) -> Vec<HeaderView> {
-		self.rlp.at(2).iter().map(HeaderView::new_from_rlp).collect()
-	}
-
-	/// Return list of uncle hashes of given block.
-	pub fn uncle_hashes(&self) -> Vec<H256> {
-		self.rlp.at(2).iter().map(|rlp| rlp.as_raw().sha3()).collect()
-	}
-
-	/// Return nth uncle.
-	pub fn uncle_at(&self, index: usize) -> Option<Header> {
-		self.rlp.at(2).iter().nth(index).map(|rlp| rlp.as_val())
-	}
-}
-
-impl<'a> Hashable for BlockView<'a> {
-	fn sha3(&self) -> H256 {
-		self.header_view().sha3()
-	}
-}
-
-/// View onto block header rlp.
-pub struct HeaderView<'a> {
-	rlp: Rlp<'a>
-}
-
-impl<'a> HeaderView<'a> {
-	/// Creates new view onto header from raw bytes.
-	pub fn new(bytes: &'a [u8]) -> HeaderView<'a> {
-		HeaderView {
-			rlp: Rlp::new(bytes)
-		}
-	}
-
-	/// Creates new view onto header from rlp.
-	pub fn new_from_rlp(rlp: Rlp<'a>) -> HeaderView<'a> {
-		HeaderView {
-			rlp: rlp
-		}
-	}
-
-	/// Returns header hash.
-	pub fn hash(&self) -> H256 { self.sha3() }
-
-	/// Returns raw rlp.
-	pub fn rlp(&self) -> &Rlp<'a> { &self.rlp }
-
-	/// Returns parent hash.
-	pub fn parent_hash(&self) -> H256 { self.rlp.val_at(0) }
-
-	/// Returns uncles hash.
-	pub fn uncles_hash(&self) -> H256 { self.rlp.val_at(1) }
-
-	/// Returns author.
-	pub fn author(&self) -> Address { self.rlp.val_at(2) }
-
-	/// Returns state root.
-	pub fn state_root(&self) -> H256 { self.rlp.val_at(3) }
-
-	/// Returns transactions root.
-	pub fn transactions_root(&self) -> H256 { self.rlp.val_at(4) }
-
-	/// Returns block receipts root.
-	pub fn receipts_root(&self) -> H256 { self.rlp.val_at(5) }
-
-	/// Returns block log bloom.
-	pub fn log_bloom(&self) -> H2048 { self.rlp.val_at(6) }
-
-	/// Returns block difficulty.
-	pub fn difficulty(&self) -> U256 { self.rlp.val_at(7) }
-
-	/// Returns block number.
-	pub fn number(&self) -> BlockNumber { self.rlp.val_at(8) }
-
-	/// Returns block gas limit.
-	pub fn gas_limit(&self) -> U256 { self.rlp.val_at(9) }
-
-	/// Returns block gas used.
-	pub fn gas_used(&self) -> U256 { self.rlp.val_at(10) }
-
-	/// Returns timestamp.
-	pub fn timestamp(&self) -> u64 { self.rlp.val_at(11) }
-
-	/// Returns block extra data.
-	pub fn extra_data(&self) -> Bytes { self.rlp.val_at(12) }
-
-	/// Returns a vector of post-RLP-encoded seal fields.
-	pub fn seal(&self) -> Vec<Bytes> {
-		let mut seal = vec![];
-		for i in 13..self.rlp.item_count() {
-			seal.push(self.rlp.at(i).as_raw().to_vec());
-		}
-		seal
-	}
-}
-
-impl<'a> Hashable for HeaderView<'a> {
-	fn sha3(&self) -> H256 {
-		self.rlp.as_raw().sha3()
-	}
-}
-
-#[cfg(test)]
-mod tests {
-	use rustc_serialize::hex::FromHex;
-	use super::BlockView;
-
-	#[test]
-	fn test_header_view_seal_fields() {
-		// that's rlp of block created with ethash engine.
-		let block_rlp = "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".from_hex().unwrap();
-		let mix_hash = "a0a0349d8c3df71f1a48a9df7d03fd5f14aeee7d91332c009ecaff0a71ead405bd".from_hex().unwrap();
-		let nonce = "88ab4e252a7e8c2a23".from_hex().unwrap();
-
-		let block_view = BlockView::new(&block_rlp);
-		let header_view = block_view.header_view();
-		let seal_fields = header_view.seal();
-		assert_eq!(seal_fields.len(), 2);
-		assert_eq!(seal_fields[0], mix_hash);
-		assert_eq!(seal_fields[1], nonce);
-	}
-}

ethcore/src/views/block.rs

@@ -0,0 +1,167 @@
+// Copyright 2015, 2016 Ethcore (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/>.
+
+//! View onto block rlp.
+
+use util::*;
+use header::*;
+use transaction::*;
+use super::{TransactionView, HeaderView};
+
+/// View onto block rlp.
+pub struct BlockView<'a> {
+	rlp: Rlp<'a>
+}
+
+impl<'a> BlockView<'a> {
+	/// Creates new view onto block from raw bytes.
+	pub fn new(bytes: &'a [u8]) -> BlockView<'a> {
+		BlockView {
+			rlp: Rlp::new(bytes)
+		}
+	}
+
+	/// Creates new view onto block from rlp.
+	pub fn new_from_rlp(rlp: Rlp<'a>) -> BlockView<'a> {
+		BlockView {
+			rlp: rlp
+		}
+	}
+
+	/// Block header hash.
+	pub fn hash(&self) -> H256 {
+		self.sha3()
+	}
+
+	/// Return reference to underlaying rlp.
+	pub fn rlp(&self) -> &Rlp<'a> {
+		&self.rlp
+	}
+
+	/// Create new Header object from header rlp.
+	pub fn header(&self) -> Header {
+		self.rlp.val_at(0)
+	}
+
+	/// Create new header view obto block head rlp.
+	pub fn header_view(&self) -> HeaderView<'a> {
+		HeaderView::new_from_rlp(self.rlp.at(0))
+	}
+
+	/// Return List of transactions in given block.
+	pub fn transactions(&self) -> Vec<SignedTransaction> {
+		self.rlp.val_at(1)
+	}
+
+	/// Return List of transactions with additional localization info.
+	pub fn localized_transactions(&self) -> Vec<LocalizedTransaction> {
+		let header = self.header_view();
+		let block_hash = header.sha3();
+		let block_number = header.number();
+		self.transactions()
+			.into_iter()
+			.enumerate()
+			.map(|(i, t)| LocalizedTransaction {
+				signed: t,
+				block_hash: block_hash.clone(),
+				block_number: block_number,
+				transaction_index: i
+			}).collect()
+	}
+
+	/// Return number of transactions in given block, without deserializing them.
+	pub fn transactions_count(&self) -> usize {
+		self.rlp.at(1).iter().count()
+	}
+
+	/// Return List of transactions in given block.
+	pub fn transaction_views(&self) -> Vec<TransactionView> {
+		self.rlp.at(1).iter().map(TransactionView::new_from_rlp).collect()
+	}
+
+	/// Return transaction hashes.
+	pub fn transaction_hashes(&self) -> Vec<H256> {
+		self.rlp.at(1).iter().map(|rlp| rlp.as_raw().sha3()).collect()
+	}
+
+	/// Returns transaction at given index without deserializing unnecessary data.
+	pub fn transaction_at(&self, index: usize) -> Option<SignedTransaction> {
+		self.rlp.at(1).iter().nth(index).map(|rlp| rlp.as_val())
+	}
+
+	/// Returns localized transaction at given index.
+	pub fn localized_transaction_at(&self, index: usize) -> Option<LocalizedTransaction> {
+		let header = self.header_view();
+		let block_hash = header.sha3();
+		let block_number = header.number();
+		self.transaction_at(index).map(|t| LocalizedTransaction {
+			signed: t,
+			block_hash: block_hash,
+			block_number: block_number,
+			transaction_index: index
+		})
+	}
+
+	/// Return list of uncles of given block.
+	pub fn uncles(&self) -> Vec<Header> {
+		self.rlp.val_at(2)
+	}
+
+	/// Return number of uncles in given block, without deserializing them.
+	pub fn uncles_count(&self) -> usize {
+		self.rlp.at(2).iter().count()
+	}
+
+	/// Return List of transactions in given block.
+	pub fn uncle_views(&self) -> Vec<HeaderView> {
+		self.rlp.at(2).iter().map(HeaderView::new_from_rlp).collect()
+	}
+
+	/// Return list of uncle hashes of given block.
+	pub fn uncle_hashes(&self) -> Vec<H256> {
+		self.rlp.at(2).iter().map(|rlp| rlp.as_raw().sha3()).collect()
+	}
+
+	/// Return nth uncle.
+	pub fn uncle_at(&self, index: usize) -> Option<Header> {
+		self.rlp.at(2).iter().nth(index).map(|rlp| rlp.as_val())
+	}
+}
+
+impl<'a> Hashable for BlockView<'a> {
+	fn sha3(&self) -> H256 {
+		self.header_view().sha3()
+	}
+}
+
+#[cfg(test)]
+mod tests {
+	use std::str::FromStr;
+	use rustc_serialize::hex::FromHex;
+	use util::H256;
+	use super::BlockView;
+
+	#[test]
+	fn test_block_view() {
+		// that's rlp of block created with ethash engine.
+		let rlp = "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".from_hex().unwrap();
+
+		let view = BlockView::new(&rlp);
+		assert_eq!(view.hash(), H256::from_str("2c9747e804293bd3f1a986484343f23bc88fd5be75dfe9d5c2860aff61e6f259").unwrap());
+		assert_eq!(view.transactions_count(), 1);
+		assert_eq!(view.uncles_count(), 0);
+	}
+}

ethcore/src/views/header.rs

@@ -0,0 +1,134 @@
+// Copyright 2015, 2016 Ethcore (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/>.
+
+//! View onto block header rlp
+
+use util::{Rlp, U256, Bytes, Hashable, H256, Address, H2048, View};
+use header::BlockNumber;
+
+/// View onto block header rlp.
+pub struct HeaderView<'a> {
+	rlp: Rlp<'a>
+}
+
+impl<'a> HeaderView<'a> {
+	/// Creates new view onto header from raw bytes.
+	pub fn new(bytes: &'a [u8]) -> HeaderView<'a> {
+		HeaderView {
+			rlp: Rlp::new(bytes)
+		}
+	}
+
+	/// Creates new view onto header from rlp.
+	pub fn new_from_rlp(rlp: Rlp<'a>) -> HeaderView<'a> {
+		HeaderView {
+			rlp: rlp
+		}
+	}
+
+	/// Returns header hash.
+	pub fn hash(&self) -> H256 { self.sha3() }
+
+	/// Returns raw rlp.
+	pub fn rlp(&self) -> &Rlp<'a> { &self.rlp }
+
+	/// Returns parent hash.
+	pub fn parent_hash(&self) -> H256 { self.rlp.val_at(0) }
+
+	/// Returns uncles hash.
+	pub fn uncles_hash(&self) -> H256 { self.rlp.val_at(1) }
+
+	/// Returns author.
+	pub fn author(&self) -> Address { self.rlp.val_at(2) }
+
+	/// Returns state root.
+	pub fn state_root(&self) -> H256 { self.rlp.val_at(3) }
+
+	/// Returns transactions root.
+	pub fn transactions_root(&self) -> H256 { self.rlp.val_at(4) }
+
+	/// Returns block receipts root.
+	pub fn receipts_root(&self) -> H256 { self.rlp.val_at(5) }
+
+	/// Returns block log bloom.
+	pub fn log_bloom(&self) -> H2048 { self.rlp.val_at(6) }
+
+	/// Returns block difficulty.
+	pub fn difficulty(&self) -> U256 { self.rlp.val_at(7) }
+
+	/// Returns block number.
+	pub fn number(&self) -> BlockNumber { self.rlp.val_at(8) }
+
+	/// Returns block gas limit.
+	pub fn gas_limit(&self) -> U256 { self.rlp.val_at(9) }
+
+	/// Returns block gas used.
+	pub fn gas_used(&self) -> U256 { self.rlp.val_at(10) }
+
+	/// Returns timestamp.
+	pub fn timestamp(&self) -> u64 { self.rlp.val_at(11) }
+
+	/// Returns block extra data.
+	pub fn extra_data(&self) -> Bytes { self.rlp.val_at(12) }
+
+	/// Returns a vector of post-RLP-encoded seal fields.
+	pub fn seal(&self) -> Vec<Bytes> {
+		let mut seal = vec![];
+		for i in 13..self.rlp.item_count() {
+			seal.push(self.rlp.at(i).as_raw().to_vec());
+		}
+		seal
+	}
+}
+
+impl<'a> Hashable for HeaderView<'a> {
+	fn sha3(&self) -> H256 {
+		self.rlp.as_raw().sha3()
+	}
+}
+
+#[cfg(test)]
+mod tests {
+	use std::str::FromStr;
+	use rustc_serialize::hex::FromHex;
+	use util::{H256, Address, H2048, U256};
+	use super::HeaderView;
+
+	#[test]
+	fn test_header_view() {
+		// that's rlp of block header created with ethash engine.
+		let rlp = "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".from_hex().unwrap();
+		let mix_hash = "a0a0349d8c3df71f1a48a9df7d03fd5f14aeee7d91332c009ecaff0a71ead405bd".from_hex().unwrap();
+		let nonce = "88ab4e252a7e8c2a23".from_hex().unwrap();
+
+		let view = HeaderView::new(&rlp);
+		assert_eq!(view.hash(), H256::from_str("2c9747e804293bd3f1a986484343f23bc88fd5be75dfe9d5c2860aff61e6f259").unwrap());
+		assert_eq!(view.parent_hash(), H256::from_str("d405da4e66f1445d455195229624e133f5baafe72b5cf7b3c36c12c8146e98b7").unwrap());
+		assert_eq!(view.uncles_hash(), H256::from_str("1dcc4de8dec75d7aab85b567b6ccd41ad312451b948a7413f0a142fd40d49347").unwrap());
+		assert_eq!(view.author(), Address::from_str("8888f1f195afa192cfee860698584c030f4c9db1").unwrap());
+		assert_eq!(view.state_root(), H256::from_str("5fb2b4bfdef7b314451cb138a534d225c922fc0e5fbe25e451142732c3e25c25").unwrap());
+		assert_eq!(view.transactions_root(), H256::from_str("88d2ec6b9860aae1a2c3b299f72b6a5d70d7f7ba4722c78f2c49ba96273c2158").unwrap());
+		assert_eq!(view.receipts_root(), H256::from_str("07c6fdfa8eea7e86b81f5b0fc0f78f90cc19f4aa60d323151e0cac660199e9a1").unwrap());
+		assert_eq!(view.log_bloom(), H2048::default());
+		assert_eq!(view.difficulty(), U256::from(0x02_00_80));
+		assert_eq!(view.number(), 3);
+		assert_eq!(view.gas_limit(), U256::from(0x2f_ef_ba));
+		assert_eq!(view.gas_used(), U256::from(0x52_4d));
+		assert_eq!(view.timestamp(), 0x56_8e_93_2a);
+		assert_eq!(view.extra_data(), vec![] as Vec<u8>);
+		assert_eq!(view.seal(), vec![mix_hash, nonce]);
+	}
+}

ethcore/src/views/mod.rs

@@ -0,0 +1,25 @@
+// Copyright 2015, 2016 Ethcore (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/>.
+
+//! Block oriented views onto rlp.
+
+mod block;
+mod header;
+mod transaction;
+
+pub use self::block::BlockView;
+pub use self::header::HeaderView;
+pub use self::transaction::TransactionView;

ethcore/src/views/transaction.rs

@@ -0,0 +1,97 @@
+// Copyright 2015, 2016 Ethcore (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/>.
+
+//! View onto transaction rlp
+use util::{Rlp, U256, Bytes, Hashable, H256, View};
+
+/// View onto transaction rlp.
+pub struct TransactionView<'a> {
+	rlp: Rlp<'a>
+}
+
+impl<'a> TransactionView<'a> {
+	/// Creates new view onto block from raw bytes.
+	pub fn new(bytes: &'a [u8]) -> TransactionView<'a> {
+		TransactionView {
+			rlp: Rlp::new(bytes)
+		}
+	}
+
+	/// Creates new view onto block from rlp.
+	pub fn new_from_rlp(rlp: Rlp<'a>) -> TransactionView<'a> {
+		TransactionView {
+			rlp: rlp
+		}
+	}
+
+	/// Return reference to underlaying rlp.
+	pub fn rlp(&self) -> &Rlp<'a> {
+		&self.rlp
+	}
+
+	/// Get the nonce field of the transaction.
+	pub fn nonce(&self) -> U256 { self.rlp.val_at(0) }
+
+	/// Get the gas_price field of the transaction.
+	pub fn gas_price(&self) -> U256 { self.rlp.val_at(1) }
+
+	/// Get the gas field of the transaction.
+	pub fn gas(&self) -> U256 { self.rlp.val_at(2) }
+
+	/// Get the value field of the transaction.
+	pub fn value(&self) -> U256 { self.rlp.val_at(4) }
+
+	/// Get the data field of the transaction.
+	pub fn data(&self) -> Bytes { self.rlp.val_at(5) }
+
+	/// Get the v field of the transaction.
+	pub fn v(&self) -> u8 { let r: u16 = self.rlp.val_at(6); r as u8 }
+
+	/// Get the r field of the transaction.
+	pub fn r(&self) -> U256 { self.rlp.val_at(7) }
+
+	/// Get the s field of the transaction.
+	pub fn s(&self) -> U256 { self.rlp.val_at(8) }
+}
+
+impl<'a> Hashable for TransactionView<'a> {
+	fn sha3(&self) -> H256 {
+		self.rlp.as_raw().sha3()
+	}
+}
+
+#[cfg(test)]
+mod tests {
+	use std::str::FromStr;
+	use rustc_serialize::hex::FromHex;
+	use util::U256;
+	use super::TransactionView;
+
+	#[test]
+	fn test_transaction_view() {
+		let rlp = "f87c80018261a894095e7baea6a6c7c4c2dfeb977efac326af552d870a9d00000000000000000000000000000000000000000000000000000000001ba048b55bfa915ac795c431978d8a6a992b628d557da5ff759b307d495a36649353a0efffd310ac743f371de3b9f7f9cb56c0b28ad43601b4ab949f53faa07bd2c804".from_hex().unwrap();
+
+		let view = TransactionView::new(&rlp);
+		assert_eq!(view.nonce(), U256::from(0));
+		assert_eq!(view.gas_price(), U256::from(1));
+		assert_eq!(view.gas(), U256::from(0x61a8));
+		assert_eq!(view.value(), U256::from(0xa));
+		assert_eq!(view.data(), "0000000000000000000000000000000000000000000000000000000000".from_hex().unwrap());
+		assert_eq!(view.r(), U256::from_str("48b55bfa915ac795c431978d8a6a992b628d557da5ff759b307d495a36649353").unwrap());
+		assert_eq!(view.s(), U256::from_str("efffd310ac743f371de3b9f7f9cb56c0b28ad43601b4ab949f53faa07bd2c804").unwrap());
+		assert_eq!(view.v(), 0x1b);
+	}
+}

install-parity.sh

@@ -1,6 +1,6 @@
 #!/usr/bin/env bash
 
-PARITY_DEB_URL=https://github.com/ethcore/parity/releases/download/v1.1.0/parity_linux_1.1.0-0_amd64.deb
+PARITY_DEB_URL=https://github.com/ethcore/parity/releases/download/v1.2.1/parity_linux_1.2.1-0_amd64.deb
 
 
 function run_installer()

ipc/rpc/src/binary.rs

@@ -139,6 +139,74 @@ impl<R: BinaryConvertable, E: BinaryConvertable> BinaryConvertable for Result<R,
 	}
 }
 
+impl<T> BinaryConvertable for VecDeque<T> where T: BinaryConvertable {
+	fn size(&self) -> usize {
+		match T::len_params() {
+			0 => mem::size_of::<T>() * self.len(),
+			_ => self.iter().fold(0usize, |acc, t| acc + t.size()),
+		}
+	}
+
+	fn to_bytes(&self, buffer: &mut [u8], length_stack: &mut VecDeque<usize>) -> Result<(), BinaryConvertError> {
+		let mut offset = 0usize;
+		for item in self.iter() {
+			let next_size = match T::len_params() {
+				0 => mem::size_of::<T>(),
+				_ => { let size = item.size(); length_stack.push_back(size); size },
+			};
+			if next_size > 0 {
+				let item_end = offset + next_size;
+				try!(item.to_bytes(&mut buffer[offset..item_end], length_stack));
+				offset = item_end;
+			}
+		}
+		Ok(())
+	}
+
+	fn from_bytes(buffer: &[u8], length_stack: &mut VecDeque<usize>) -> Result<Self, BinaryConvertError> {
+		let mut index = 0;
+		let mut result = Self::with_capacity(
+			match T::len_params() {
+				0 => buffer.len() /  mem::size_of::<T>(),
+				_ => 128,
+			});
+
+		if buffer.len() == 0 { return Ok(result); }
+
+		loop {
+			let next_size = match T::len_params() {
+				0 => mem::size_of::<T>(),
+				_ => try!(length_stack.pop_front().ok_or(BinaryConvertError)),
+			};
+			let item = if next_size == 0 {
+				try!(T::from_empty_bytes())
+			}
+			else {
+				try!(T::from_bytes(&buffer[index..index+next_size], length_stack))
+			};
+			result.push_back(item);
+
+			index = index + next_size;
+			if index == buffer.len() { break; }
+			if index + next_size > buffer.len() {
+				return Err(BinaryConvertError)
+			}
+		}
+
+		Ok(result)
+	}
+
+	fn from_empty_bytes() -> Result<Self, BinaryConvertError> {
+		Ok(Self::new())
+	}
+
+	fn len_params() -> usize {
+		1
+	}
+}
+
+//
+
 impl<T> BinaryConvertable for Vec<T> where T: BinaryConvertable {
 	fn size(&self) -> usize {
 		match T::len_params() {

json/src/spec/engine.rs

@@ -54,7 +54,9 @@ mod tests {
 					"blockReward": "0x4563918244F40000",
 					"registrar" : "0xc6d9d2cd449a754c494264e1809c50e34d64562b",
 					"frontierCompatibilityModeLimit" : "0x",
-					"daoRescueSoftFork": true
+					"daoHardforkTransition": "0xffffffffffffffff",
+					"daoHardforkBeneficiary": "0x0000000000000000000000000000000000000000",
+					"daoHardforkAccounts": []
 				}
 			}
 		}"#;

json/src/spec/ethash.rs

@@ -19,32 +19,38 @@
 use uint::Uint;
 use hash::Address;
 
-/// Ethash params deserialization.
+/// Deserializable doppelganger of EthashParams.
 #[derive(Debug, PartialEq, Deserialize)]
 pub struct EthashParams {
-	/// Gas limit divisor.
+	/// See main EthashParams docs.
 	#[serde(rename="gasLimitBoundDivisor")]
 	pub gas_limit_bound_divisor: Uint,
-	/// Minimum difficulty.
+	/// See main EthashParams docs.
 	#[serde(rename="minimumDifficulty")]
 	pub minimum_difficulty: Uint,
-	/// Difficulty bound divisor.
+	/// See main EthashParams docs.
 	#[serde(rename="difficultyBoundDivisor")]
 	pub difficulty_bound_divisor: Uint,
-	/// Block duration.
+	/// See main EthashParams docs.
 	#[serde(rename="durationLimit")]
 	pub duration_limit: Uint,
-	/// Block reward.
+	/// See main EthashParams docs.
 	#[serde(rename="blockReward")]
 	pub block_reward: Uint,
-	/// Namereg contract address.
-	pub registrar: Address,
-	/// Homestead transition block number.
+	/// See main EthashParams docs.
+	pub registrar: Option<Address>,
+	/// See main EthashParams docs.
 	#[serde(rename="frontierCompatibilityModeLimit")]
-	pub frontier_compatibility_mode_limit: Uint,
-	/// DAO rescue soft-fork?
-	#[serde(rename="daoRescueSoftFork")]
-	pub dao_rescue_soft_fork: bool,
+	pub frontier_compatibility_mode_limit: Option<Uint>,
+	/// See main EthashParams docs.
+	#[serde(rename="daoHardforkTransition")]
+	pub dao_hardfork_transition: Option<Uint>,
+	/// See main EthashParams docs.
+	#[serde(rename="daoHardforkBeneficiary")]
+	pub dao_hardfork_beneficiary: Option<Address>,
+	/// See main EthashParams docs.
+	#[serde(rename="daoHardforkAccounts")]
+	pub dao_hardfork_accounts: Option<Vec<Address>>,
 }
 
 /// Ethash engine deserialization.
@@ -70,7 +76,45 @@ mod tests {
 				"blockReward": "0x4563918244F40000",
 				"registrar": "0xc6d9d2cd449a754c494264e1809c50e34d64562b",
 				"frontierCompatibilityModeLimit": "0x42",
-				"daoRescueSoftFork": true
+				"daoHardforkTransition": "0x08",
+				"daoHardforkBeneficiary": "0xabcabcabcabcabcabcabcabcabcabcabcabcabca",
+				"daoHardforkAccounts": [
+					"0x304a554a310c7e546dfe434669c62820b7d83490",
+					"0x914d1b8b43e92723e64fd0a06f5bdb8dd9b10c79",
+					"0xfe24cdd8648121a43a7c86d289be4dd2951ed49f",
+					"0x17802f43a0137c506ba92291391a8a8f207f487d",
+					"0xb136707642a4ea12fb4bae820f03d2562ebff487",
+					"0xdbe9b615a3ae8709af8b93336ce9b477e4ac0940",
+					"0xf14c14075d6c4ed84b86798af0956deef67365b5",
+					"0xca544e5c4687d109611d0f8f928b53a25af72448",
+					"0xaeeb8ff27288bdabc0fa5ebb731b6f409507516c",
+					"0xcbb9d3703e651b0d496cdefb8b92c25aeb2171f7",
+					"0xaccc230e8a6e5be9160b8cdf2864dd2a001c28b6",
+					"0x2b3455ec7fedf16e646268bf88846bd7a2319bb2",
+					"0x4613f3bca5c44ea06337a9e439fbc6d42e501d0a",
+					"0xd343b217de44030afaa275f54d31a9317c7f441e",
+					"0x84ef4b2357079cd7a7c69fd7a37cd0609a679106",
+					"0xda2fef9e4a3230988ff17df2165440f37e8b1708",
+					"0xf4c64518ea10f995918a454158c6b61407ea345c",
+					"0x7602b46df5390e432ef1c307d4f2c9ff6d65cc97",
+					"0xbb9bc244d798123fde783fcc1c72d3bb8c189413",
+					"0x807640a13483f8ac783c557fcdf27be11ea4ac7a"
+				]
+			}
+		}"#;
+
+		let _deserialized: Ethash = serde_json::from_str(s).unwrap();
+	}
+
+	#[test]
+	fn ethash_deserialization_missing_optionals() {
+		let s = r#"{
+			"params": {
+				"gasLimitBoundDivisor": "0x0400",
+				"minimumDifficulty": "0x020000",
+				"difficultyBoundDivisor": "0x0800",
+				"durationLimit": "0x0d",
+				"blockReward": "0x4563918244F40000"
 			}
 		}"#;
 

json/src/spec/params.rs

@@ -17,6 +17,7 @@
 //! Spec params deserialization.
 
 use uint::Uint;
+use hash::H256;
 
 /// Spec params.
 #[derive(Debug, PartialEq, Deserialize)]
@@ -33,6 +34,12 @@ pub struct Params {
 	/// Minimum gas limit.
 	#[serde(rename="minGasLimit")]
 	pub min_gas_limit: Uint,
+	/// Option fork block number to check.
+	#[serde(rename="forkBlock")]
+	pub fork_block: Option<Uint>,
+	/// Expected fork block hash.
+	#[serde(rename="forkCanonHash")]
+	pub fork_hash: Option<H256>,
 }
 
 #[cfg(test)]