Merge branch 'master' into auth-round-no-mocknet

.gitlab-ci.yml

@@ -136,10 +136,15 @@ linux-armv7:
   stage: build
   image: ethcore/rust-armv7:latest
   only:
+    - master
     - beta
     - tags
     - stable
   script:
+    - export CC=arm-linux-gnueabihf-gcc
+    - export CXX=arm-linux-gnueabihf-g++
+    - export HOST_CC=gcc
+    - export HOST_CXX=g++
     - rm -rf .cargo
     - mkdir -p .cargo
     - echo "[target.armv7-unknown-linux-gnueabihf]" >> .cargo/config
@@ -171,10 +176,15 @@ linux-arm:
   stage: build
   image: ethcore/rust-arm:latest
   only:
+    - master
     - beta
     - tags
     - stable
   script:
+    - export CC=arm-linux-gnueabihf-gcc
+    - export CXX=arm-linux-gnueabihf-g++
+    - export HOST_CC=gcc
+    - export HOST_CXX=g++
     - rm -rf .cargo
     - mkdir -p .cargo
     - echo "[target.arm-unknown-linux-gnueabihf]" >> .cargo/config
@@ -210,6 +220,10 @@ linux-armv6:
     - tags
     - stable
   script:
+    - export CC=arm-linux-gnueabi-gcc
+    - export CXX=arm-linux-gnueabi-g++
+    - export HOST_CC=gcc
+    - export HOST_CXX=g++
     - rm -rf .cargo
     - mkdir -p .cargo
     - echo "[target.arm-unknown-linux-gnueabi]" >> .cargo/config
@@ -234,10 +248,15 @@ linux-aarch64:
   stage: build
   image: ethcore/rust-aarch64:latest
   only:
+    - master
     - beta
     - tags
     - stable
   script:
+    - export CC=aarch64-linux-gnu-gcc
+    - export CXX=aarch64-linux-gnu-g++
+    - export HOST_CC=gcc
+    - export HOST_CXX=g++
     - rm -rf .cargo
     - mkdir -p .cargo
     - echo "[target.aarch64-unknown-linux-gnu]" >> .cargo/config
@@ -274,6 +293,7 @@ darwin:
     - stable
   script:
     - cargo build --release --verbose
+    - rm -rf parity.md5
     - md5sum target/release/parity >> parity.md5
     - aws configure set aws_access_key_id $s3_key 
     - aws configure set aws_secret_access_key $s3_secret
@@ -344,6 +364,28 @@ test-linux:
     - rust-test
   dependencies:
     - linux-stable
+test-darwin:
+  stage: test
+  before_script:
+    - git submodule update --init --recursive
+  script:
+    - export RUST_BACKTRACE=1
+    - ./test.sh --verbose
+  tags:
+    - osx
+  dependencies:
+    - darwin
+test-windows:
+  stage: test
+  before_script:
+    - git submodule update --init --recursive
+  script:
+    - export RUST_BACKTRACE=1
+    - ./test.sh --verbose
+  tags:
+    - rust-windows
+  dependencies:
+    - windows
 js-release:
   stage: build
   image: ethcore/javascript:latest

Cargo.lock

@@ -3,7 +3,7 @@ name = "parity"
 version = "1.4.0"
 dependencies = [
  "ansi_term 0.7.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "clippy 0.0.90 (registry+https://github.com/rust-lang/crates.io-index)",
+ "clippy 0.0.96 (registry+https://github.com/rust-lang/crates.io-index)",
  "ctrlc 1.1.1 (git+https://github.com/ethcore/rust-ctrlc.git)",
  "daemonize 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "docopt 0.6.80 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -145,15 +145,15 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "clippy"
-version = "0.0.90"
+version = "0.0.96"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "clippy_lints 0.0.90 (registry+https://github.com/rust-lang/crates.io-index)",
+ "clippy_lints 0.0.96 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "clippy_lints"
-version = "0.0.90"
+version = "0.0.96"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "matches 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -279,7 +279,7 @@ dependencies = [
  "bit-set 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "bloomchain 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "byteorder 0.5.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "clippy 0.0.90 (registry+https://github.com/rust-lang/crates.io-index)",
+ "clippy 0.0.96 (registry+https://github.com/rust-lang/crates.io-index)",
  "crossbeam 0.2.9 (registry+https://github.com/rust-lang/crates.io-index)",
  "env_logger 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "ethash 1.4.0",
@@ -298,7 +298,7 @@ dependencies = [
  "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)",
- "lru-cache 0.0.7 (git+https://github.com/contain-rs/lru-cache)",
+ "lru-cache 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "num_cpus 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand 0.3.14 (registry+https://github.com/rust-lang/crates.io-index)",
  "rayon 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -307,6 +307,7 @@ dependencies = [
  "rustc-serialize 0.3.19 (registry+https://github.com/rust-lang/crates.io-index)",
  "semver 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "time 0.1.35 (registry+https://github.com/rust-lang/crates.io-index)",
+ "transient-hashmap 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -330,7 +331,7 @@ dependencies = [
 name = "ethcore-dapps"
 version = "1.4.0"
 dependencies = [
- "clippy 0.0.90 (registry+https://github.com/rust-lang/crates.io-index)",
+ "clippy 0.0.96 (registry+https://github.com/rust-lang/crates.io-index)",
  "env_logger 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "ethabi 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "ethcore-devtools 1.4.0",
@@ -473,7 +474,7 @@ dependencies = [
 name = "ethcore-rpc"
 version = "1.4.0"
 dependencies = [
- "clippy 0.0.90 (registry+https://github.com/rust-lang/crates.io-index)",
+ "clippy 0.0.96 (registry+https://github.com/rust-lang/crates.io-index)",
  "ethash 1.4.0",
  "ethcore 1.4.0",
  "ethcore-devtools 1.4.0",
@@ -503,7 +504,7 @@ dependencies = [
 name = "ethcore-signer"
 version = "1.4.0"
 dependencies = [
- "clippy 0.0.90 (registry+https://github.com/rust-lang/crates.io-index)",
+ "clippy 0.0.96 (registry+https://github.com/rust-lang/crates.io-index)",
  "env_logger 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "ethcore-devtools 1.4.0",
  "ethcore-io 1.4.0",
@@ -542,7 +543,7 @@ version = "1.4.0"
 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)",
- "clippy 0.0.90 (registry+https://github.com/rust-lang/crates.io-index)",
+ "clippy 0.0.96 (registry+https://github.com/rust-lang/crates.io-index)",
  "elastic-array 0.6.0 (git+https://github.com/ethcore/elastic-array)",
  "env_logger 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "eth-secp256k1 0.5.4 (git+https://github.com/ethcore/rust-secp256k1)",
@@ -554,6 +555,7 @@ dependencies = [
  "lazy_static 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.15 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "lru-cache 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "parking_lot 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand 0.3.14 (registry+https://github.com/rust-lang/crates.io-index)",
  "regex 0.1.68 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -631,7 +633,7 @@ dependencies = [
 name = "ethsync"
 version = "1.4.0"
 dependencies = [
- "clippy 0.0.90 (registry+https://github.com/rust-lang/crates.io-index)",
+ "clippy 0.0.96 (registry+https://github.com/rust-lang/crates.io-index)",
  "env_logger 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "ethcore 1.4.0",
  "ethcore-io 1.4.0",
@@ -906,8 +908,8 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "lru-cache"
-version = "0.0.7"
+version = "0.1.0"
-source = "git+https://github.com/contain-rs/lru-cache#13255e33c45ceb69a4b143f235a4322df5fb580e"
+source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "linked-hash-map 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -1211,7 +1213,7 @@ dependencies = [
 [[package]]
 name = "parity-ui-precompiled"
 version = "1.4.0"
-source = "git+https://github.com/ethcore/js-precompiled.git#9f8baa9d0e54056c41a842b351597d0565beda98"
+source = "git+https://github.com/ethcore/js-precompiled.git#ba726039185238d6fd604f092b089a7d52c0f436"
 dependencies = [
  "parity-dapps-glue 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -1948,8 +1950,8 @@ dependencies = [
 "checksum bytes 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)" = "c129aff112dcc562970abb69e2508b40850dd24c274761bb50fb8a0067ba6c27"
 "checksum bytes 0.4.0-dev (git+https://github.com/carllerche/bytes)" = "<none>"
 "checksum cfg-if 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "de1e760d7b6535af4241fca8bd8adf68e2e7edacc6b29f5d399050c5e48cf88c"
-"checksum clippy 0.0.90 (registry+https://github.com/rust-lang/crates.io-index)" = "d19bda68c3db98e3a780342f6101b44312fef20a5f13ce756d1202a35922b01b"
+"checksum clippy 0.0.96 (registry+https://github.com/rust-lang/crates.io-index)" = "6eacf01b0aad84a0817703498f72d252df7c0faf6a5b86d0be4265f1829e459f"
-"checksum clippy_lints 0.0.90 (registry+https://github.com/rust-lang/crates.io-index)" = "3d4ed67c69b9bb35169be2538691d290a3aa0cbfd4b9f0bfb7c221fc1d399a96"
+"checksum clippy_lints 0.0.96 (registry+https://github.com/rust-lang/crates.io-index)" = "a49960c9aab544ce86b004dcb61620e8b898fea5fc0f697a028f460f48221ed6"
 "checksum cookie 0.2.4 (registry+https://github.com/rust-lang/crates.io-index)" = "90266f45846f14a1e986c77d1e9c2626b8c342ed806fe60241ec38cc8697b245"
 "checksum crossbeam 0.2.9 (registry+https://github.com/rust-lang/crates.io-index)" = "fb974f835e90390c5f9dfac00f05b06dc117299f5ea4e85fbc7bb443af4911cc"
 "checksum ctrlc 1.1.1 (git+https://github.com/ethcore/rust-ctrlc.git)" = "<none>"
@@ -1986,7 +1988,7 @@ dependencies = [
 "checksum linked-hash-map 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)" = "bda158e0dabeb97ee8a401f4d17e479d6b891a14de0bba79d5cc2d4d325b5e48"
 "checksum linked-hash-map 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)" = "6d262045c5b87c0861b3f004610afd0e2c851e2908d08b6c870cbb9d5f494ecd"
 "checksum log 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)" = "ab83497bf8bf4ed2a74259c1c802351fcd67a65baa86394b6ba73c36f4838054"
-"checksum lru-cache 0.0.7 (git+https://github.com/contain-rs/lru-cache)" = "<none>"
+"checksum lru-cache 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "656fa4dfcb02bcf1063c592ba3ff6a5303ee1f2afe98c8a889e8b1a77c6dfdb7"
 "checksum matches 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)" = "15305656809ce5a4805b1ff2946892810992197ce1270ff79baded852187942e"
 "checksum memchr 0.1.11 (registry+https://github.com/rust-lang/crates.io-index)" = "d8b629fb514376c675b98c1421e80b151d3817ac42d7c667717d282761418d20"
 "checksum mime 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "a74cc2587bf97c49f3f5bab62860d6abf3902ca73b66b51d9b049fbdcd727bd2"

Cargo.toml

@@ -46,7 +46,7 @@ ethcore-logger = { path = "logger" }
 rlp = { path = "util/rlp" }
 ethcore-stratum = { path = "stratum" }
 ethcore-dapps = { path = "dapps", optional = true }
-clippy = { version = "0.0.90", optional = true}
+clippy = { version = "0.0.96", optional = true}
 
 [target.'cfg(windows)'.dependencies]
 winapi = "0.2"

dapps/Cargo.toml

@@ -33,7 +33,7 @@ fetch = { path = "../util/fetch" }
 parity-ui = { path = "./ui" }
 
 mime_guess = { version = "1.6.1" }
-clippy = { version = "0.0.90", optional = true}
+clippy = { version = "0.0.96", optional = true}
 
 [build-dependencies]
 serde_codegen = { version = "0.8", optional = true }

db/Cargo.toml

@@ -11,7 +11,7 @@ build = "build.rs"
 ethcore-ipc-codegen = { path = "../ipc/codegen" }
 
 [dependencies]
-clippy = { version = "0.0.90", optional = true}
+clippy = { version = "0.0.96", optional = true}
 ethcore-devtools = { path = "../devtools" }
 ethcore-ipc = { path = "../ipc/rpc" }
 rocksdb = { git = "https://github.com/ethcore/rust-rocksdb" }

ethash/src/lib.rs

@@ -69,14 +69,19 @@ impl EthashManager {
 				Some(ref e) if *e == epoch => lights.recent.clone(),
 				_ => match lights.prev_epoch.clone() {
 					Some(e) if e == epoch => {
-						// swap
+						// don't swap if recent is newer.
-						let t = lights.prev_epoch;
+						if lights.recent_epoch > lights.prev_epoch {
-						lights.prev_epoch = lights.recent_epoch;
+							None
-						lights.recent_epoch = t;
+						} else {
-						let t = lights.prev.clone();
+							// swap
-						lights.prev = lights.recent.clone();
+							let t = lights.prev_epoch;
-						lights.recent = t;
+							lights.prev_epoch = lights.recent_epoch;
-						lights.recent.clone()
+							lights.recent_epoch = t;
+							let t = lights.prev.clone();
+							lights.prev = lights.recent.clone();
+							lights.recent = t;
+							lights.recent.clone()
+						}
 					}
 					_ => None,
 				},

ethcore/Cargo.toml

@@ -24,8 +24,11 @@ rayon = "0.4.2"
 semver = "0.2"
 bit-set = "0.4"
 time = "0.1"
+rand = "0.3"
+byteorder = "0.5"
+transient-hashmap = "0.1"
 evmjit = { path = "../evmjit", optional = true }
-clippy = { version = "0.0.90", optional = true}
+clippy = { version = "0.0.96", optional = true}
 ethash = { path = "../ethash" }
 ethcore-util = { path = "../util" }
 ethcore-io = { path = "../util/io" }
@@ -36,10 +39,8 @@ ethstore = { path = "../ethstore" }
 ethkey = { path = "../ethkey" }
 ethcore-ipc-nano = { path = "../ipc/nano" }
 rlp = { path = "../util/rlp" }
-rand = "0.3"
+lru-cache = "0.1.0"
-lru-cache = { git = "https://github.com/contain-rs/lru-cache" }
 ethcore-bloom-journal = { path = "../util/bloom" }
-byteorder = "0.5"
 
 [dependencies.hyper]
 git = "https://github.com/ethcore/hyper"

ethcore/res/ethereum/classic.json

@@ -39,10 +39,18 @@
 		"stateRoot": "0xd7f8974fb5ac78d9ac099b9ad5018bedc2ce0a72dad1827a1709da30580f0544"
 	},
 	"nodes": [
+		"enode://08c7ee6a4f861ff0664a49532bcc86de1363acd608999d1b76609bb9bc278649906f069057630fd9493924a368b5d1dc9b8f8bf13ac26df72512f6d1fabd8c95@45.32.7.81:30303",
 		"enode://e809c4a2fec7daed400e5e28564e23693b23b2cc5a019b612505631bbe7b9ccf709c1796d2a3d29ef2b045f210caf51e3c4f5b6d3587d43ad5d6397526fa6179@174.112.32.157:30303",
 		"enode://687be94c3a7beaa3d2fde82fa5046cdeb3e8198354e05b29d6e0d4e276713e3707ac10f784a7904938b06b46c764875c241b0337dd853385a4d8bfcbf8190647@95.183.51.229:30303",
 		"enode://6e538e7c1280f0a31ff08b382db5302480f775480b8e68f8febca0ceff81e4b19153c6f8bf60313b93bef2cc34d34e1df41317de0ce613a201d1660a788a03e2@52.206.67.235:30303",
-		"enode://217ebe27e89bf4fec8ce06509323ff095b1014378deb75ab2e5f6759a4e8750a3bd8254b8c6833136e4d5e58230d65ee8ab34a5db5abf0640408c4288af3c8a7@188.138.1.237:30303"
+		"enode://ca5ae4eca09ba6787e29cf6d86f7634d07aae6b9e6317a59aff675851c0bf445068173208cf8ef7f5cd783d8e29b85b2fa3fa358124cf0546823149724f9bde1@138.68.1.16:30303",
+		"enode://217ebe27e89bf4fec8ce06509323ff095b1014378deb75ab2e5f6759a4e8750a3bd8254b8c6833136e4d5e58230d65ee8ab34a5db5abf0640408c4288af3c8a7@188.138.1.237:30303",
+		"enode://fa20444ef991596ce99b81652ac4e61de1eddc4ff21d3cd42762abd7ed47e7cf044d3c9ccddaf6035d39725e4eb372806787829ccb9a08ec7cb71883cb8c3abd@50.149.116.182:30303",
+		"enode://4bd6a4df3612c718333eb5ea7f817923a8cdf1bed89cee70d1710b45a0b6b77b2819846440555e451a9b602ad2efa2d2facd4620650249d8468008946887820a@71.178.232.20:30304",
+		"enode://921cf8e4c345fe8db913c53964f9cadc667644e7f20195a0b7d877bd689a5934e146ff2c2259f1bae6817b6585153a007ceb67d260b720fa3e6fc4350df25c7f@51.255.49.170:30303",
+		"enode://ffea3b01c000cdd89e1e9229fea3e80e95b646f9b2aa55071fc865e2f19543c9b06045cc2e69453e6b78100a119e66be1b5ad50b36f2ffd27293caa28efdd1b2@128.199.93.177:3030",
+		"enode://ee3da491ce6a155eb132708eb0e8d04b0637926ec0ae1b79e63fc97cb9fc3818f49250a0ae0d7f79ed62b66ec677f408c4e01741504dc7a051e274f1e803d454@91.121.65.179:40404",
+		"enode://48e063a6cf5f335b1ef2ed98126bf522cf254396f850c7d442fe2edbbc23398787e14cd4de7968a00175a82762de9cbe9e1407d8ccbcaeca5004d65f8398d759@159.203.255.59:30303"
 	],
 	"accounts": {
 		"0000000000000000000000000000000000000001": { "builtin": { "name": "ecrecover", "pricing": { "linear": { "base": 3000, "word": 0 } } } },

ethcore/res/ethereum/frontier.json

@@ -158,9 +158,17 @@
 		"stateRoot": "0xd7f8974fb5ac78d9ac099b9ad5018bedc2ce0a72dad1827a1709da30580f0544"
 	},
 	"nodes": [
-		"enode://cd6611461840543d5b9c56fbf088736154c699c43973b3a1a32390cf27106f87e58a818a606ccb05f3866de95a4fe860786fea71bf891ea95f234480d3022aa3@136.243.154.245:30303",
+		"enode://efe4f2493f4aff2d641b1db8366b96ddacfe13e7a6e9c8f8f8cf49f9cdba0fdf3258d8c8f8d0c5db529f8123c8f1d95f36d54d590ca1bb366a5818b9a4ba521c@163.172.187.252:30303",
+		"enode://cd6611461840543d5b9c56fbf088736154c699c43973b3a1a32390cf27106f87e58a818a606ccb05f3866de95a4fe860786fea71bf891ea95f234480d3022aa3@163.172.157.114:30303",
 		"enode://bcc7240543fe2cf86f5e9093d05753dd83343f8fda7bf0e833f65985c73afccf8f981301e13ef49c4804491eab043647374df1c4adf85766af88a624ecc3330e@136.243.154.244:30303",
 		"enode://ed4227681ca8c70beb2277b9e870353a9693f12e7c548c35df6bca6a956934d6f659999c2decb31f75ce217822eefca149ace914f1cbe461ed5a2ebaf9501455@88.212.206.70:30303",
+		"enode://cadc6e573b6bc2a9128f2f635ac0db3353e360b56deef239e9be7e7fce039502e0ec670b595f6288c0d2116812516ad6b6ff8d5728ff45eba176989e40dead1e@37.128.191.230:30303",
+		"enode://595a9a06f8b9bc9835c8723b6a82105aea5d55c66b029b6d44f229d6d135ac3ecdd3e9309360a961ea39d7bee7bac5d03564077a4e08823acc723370aace65ec@46.20.235.22:30303",
+		"enode://029178d6d6f9f8026fc0bc17d5d1401aac76ec9d86633bba2320b5eed7b312980c0a210b74b20c4f9a8b0b2bf884b111fa9ea5c5f916bb9bbc0e0c8640a0f56c@216.158.85.185:30303",
+		"enode://84f5d5957b4880a8b0545e32e05472318898ad9fc8ebe1d56c90c12334a98e12351eccfdf3a2bf72432ac38b57e9d348400d17caa083879ade3822390f89773f@10.1.52.78:30303",
+		"enode://f90dc9b9bf7b8db97726b7849e175f1eb2707f3d8f281c929336e398dd89b0409fc6aeceb89e846278e9d3ecc3857cebfbe6758ff352ece6fe5d42921ee761db@10.1.173.87:30303",
+		"enode://6a868ced2dec399c53f730261173638a93a40214cf299ccf4d42a76e3fa54701db410669e8006347a4b3a74fa090bb35af0320e4bc8d04cf5b7f582b1db285f5@10.3.149.199:30303",
+		"enode://fdd1b9bb613cfbc200bba17ce199a9490edc752a833f88d4134bf52bb0d858aa5524cb3ec9366c7a4ef4637754b8b15b5dc913e4ed9fdb6022f7512d7b63f181@212.47.247.103:30303",
 		"enode://a979fb575495b8d6db44f750317d0f4622bf4c2aa3365d6af7c284339968eef29b69ad0dce72a4d8db5ebb4968de0e3bec910127f134779fbcb0cb6d3331163c@52.16.188.185:30303",
 		"enode://de471bccee3d042261d52e9bff31458daecc406142b401d4cd848f677479f73104b9fdeb090af9583d3391b7f10cb2ba9e26865dd5fca4fcdc0fb1e3b723c786@54.94.239.50:30303",
 		"enode://1118980bf48b0a3640bdba04e0fe78b1add18e1cd99bf22d53daac1fd9972ad650df52176e7c7d89d1114cfef2bc23a2959aa54998a46afcf7d91809f0855082@52.74.57.123:30303",

ethcore/src/account_provider.rs

@@ -267,7 +267,7 @@ impl AccountProvider {
 
 	/// Returns `true` if the password for `account` is `password`. `false` if not.
 	pub fn test_password(&self, account: &Address, password: String) -> Result<bool, Error> {
-		match self.sstore.sign(&account, &password, &Default::default()) {
+		match self.sstore.sign(account, &password, &Default::default()) {
 			Ok(_) => Ok(true),
 			Err(SSError::InvalidPassword) => Ok(false),
 			Err(e) => Err(Error::SStore(e)),
@@ -276,7 +276,7 @@ impl AccountProvider {
 
 	/// Changes the password of `account` from `password` to `new_password`. Fails if incorrect `password` given.
 	pub fn change_password(&self, account: &Address, password: String, new_password: String) -> Result<(), Error> {
-		self.sstore.change_password(&account, &password, &new_password).map_err(Error::SStore)
+		self.sstore.change_password(account, &password, &new_password).map_err(Error::SStore)
 	}
 
 	/// Helper method used for unlocking accounts.

ethcore/src/block.rs

@@ -542,7 +542,7 @@ pub fn enact(
 	Ok(b.close_and_lock())
 }
 
-#[inline(always)]
+#[inline]
 #[cfg(not(feature = "slow-blocks"))]
 fn push_transactions(block: &mut OpenBlock, transactions: &[SignedTransaction]) -> Result<(), Error> {
 	for t in transactions {

ethcore/src/blockchain/blockchain.rs

@@ -196,6 +196,7 @@ pub struct BlockChain {
 
 	pending_best_block: RwLock<Option<BestBlock>>,
 	pending_block_hashes: RwLock<HashMap<BlockNumber, H256>>,
+	pending_block_details: RwLock<HashMap<H256, BlockDetails>>,
 	pending_transaction_addresses: RwLock<HashMap<H256, Option<TransactionAddress>>>,
 }
 
@@ -414,6 +415,7 @@ impl<'a> Iterator for AncestryIter<'a> {
 }
 
 impl BlockChain {
+	#[cfg_attr(feature="dev", allow(useless_let_if_seq))]
 	/// Create new instance of blockchain from given Genesis
 	pub fn new(config: Config, genesis: &[u8], db: Arc<Database>) -> BlockChain {
 		// 400 is the avarage size of the key
@@ -438,6 +440,7 @@ impl BlockChain {
 			cache_man: Mutex::new(cache_man),
 			pending_best_block: RwLock::new(None),
 			pending_block_hashes: RwLock::new(HashMap::new()),
+			pending_block_details: RwLock::new(HashMap::new()),
 			pending_transaction_addresses: RwLock::new(HashMap::new()),
 		};
 
@@ -565,7 +568,7 @@ impl BlockChain {
 				let range = extras.number as bc::Number .. extras.number as bc::Number;
 				let chain = bc::group::BloomGroupChain::new(self.blooms_config, self);
 				let changes = chain.replace(&range, vec![]);
-				for (k, v) in changes.into_iter() {
+				for (k, v) in changes {
 					batch.write(db::COL_EXTRA, &LogGroupPosition::from(k), &BloomGroup::from(v));
 				}
 				batch.put(db::COL_EXTRA, b"best", &hash);
@@ -789,11 +792,10 @@ impl BlockChain {
 	/// the chain and the child's parent is this block.
 	///
 	/// Used in snapshots to glue the chunks together at the end.
-	pub fn add_child(&self, block_hash: H256, child_hash: H256) {
+	pub fn add_child(&self, batch: &mut DBTransaction, block_hash: H256, child_hash: H256) {
 		let mut parent_details = self.block_details(&block_hash)
 			.unwrap_or_else(|| panic!("Invalid block hash: {:?}", block_hash));
 
-		let mut batch = self.db.transaction();
 		parent_details.children.push(child_hash);
 
 		let mut update = HashMap::new();
@@ -804,8 +806,6 @@ impl BlockChain {
 		batch.extend_with_cache(db::COL_EXTRA, &mut *write_details, update, CacheUpdatePolicy::Overwrite);
 
 		self.cache_man.lock().note_used(CacheID::BlockDetails(block_hash));
-
-		self.db.write(batch).unwrap();
 	}
 
 	#[cfg_attr(feature="dev", allow(similar_names))]
@@ -894,17 +894,6 @@ impl BlockChain {
 
 	/// Prepares extras update.
 	fn prepare_update(&self, batch: &mut DBTransaction, update: ExtrasUpdate, is_best: bool) {
-		{
-			let block_hashes: Vec<_> = update.block_details.keys().cloned().collect();
-
-			let mut write_details = self.block_details.write();
-			batch.extend_with_cache(db::COL_EXTRA, &mut *write_details, update.block_details, CacheUpdatePolicy::Overwrite);
-
-			let mut cache_man = self.cache_man.lock();
-			for hash in block_hashes {
-				cache_man.note_used(CacheID::BlockDetails(hash));
-			}
-		}
 
 		{
 			let mut write_receipts = self.block_receipts.write();
@@ -916,7 +905,7 @@ impl BlockChain {
 			batch.extend_with_cache(db::COL_EXTRA, &mut *write_blocks_blooms, update.blocks_blooms, CacheUpdatePolicy::Remove);
 		}
 
-		// These cached values must be updated last with all three locks taken to avoid
+		// These cached values must be updated last with all four locks taken to avoid
 		// cache decoherence
 		{
 			let mut best_block = self.pending_best_block.write();
@@ -934,8 +923,10 @@ impl BlockChain {
 				},
 			}
 			let mut write_hashes = self.pending_block_hashes.write();
+			let mut write_details = self.pending_block_details.write();
 			let mut write_txs = self.pending_transaction_addresses.write();
 
+			batch.extend_with_cache(db::COL_EXTRA, &mut *write_details, update.block_details, CacheUpdatePolicy::Overwrite);
 			batch.extend_with_cache(db::COL_EXTRA, &mut *write_hashes, update.block_hashes, CacheUpdatePolicy::Overwrite);
 			batch.extend_with_option_cache(db::COL_EXTRA, &mut *write_txs, update.transactions_addresses, CacheUpdatePolicy::Overwrite);
 		}
@@ -945,9 +936,11 @@ impl BlockChain {
 	pub fn commit(&self) {
 		let mut pending_best_block = self.pending_best_block.write();
 		let mut pending_write_hashes = self.pending_block_hashes.write();
+		let mut pending_block_details = self.pending_block_details.write();
 		let mut pending_write_txs = self.pending_transaction_addresses.write();
 
 		let mut best_block = self.best_block.write();
+		let mut write_block_details = self.block_details.write();
 		let mut write_hashes = self.block_hashes.write();
 		let mut write_txs = self.transaction_addresses.write();
 		// update best block
@@ -960,9 +953,11 @@ impl BlockChain {
 
 		let pending_hashes_keys: Vec<_> = pending_write_hashes.keys().cloned().collect();
 		let enacted_txs_keys: Vec<_> = enacted_txs.keys().cloned().collect();
+		let pending_block_hashes: Vec<_> = pending_block_details.keys().cloned().collect();
 
 		write_hashes.extend(mem::replace(&mut *pending_write_hashes, HashMap::new()));
 		write_txs.extend(enacted_txs.into_iter().map(|(k, v)| (k, v.expect("Transactions were partitioned; qed"))));
+		write_block_details.extend(mem::replace(&mut *pending_block_details, HashMap::new()));
 
 		for hash in retracted_txs.keys() {
 			write_txs.remove(hash);
@@ -976,6 +971,10 @@ impl BlockChain {
 		for hash in enacted_txs_keys {
 			cache_man.note_used(CacheID::TransactionAddresses(hash));
 		}
+
+		for hash in pending_block_hashes {
+			cache_man.note_used(CacheID::BlockDetails(hash));
+		}
 	}
 
 	/// Iterator that lists `first` and then all of `first`'s ancestors, by hash.
@@ -1296,6 +1295,11 @@ impl BlockChain {
 			ancient_block_number: best_ancient_block.as_ref().map(|b| b.number),
 		}
 	}
+
+	#[cfg(test)]
+	pub fn db(&self) -> &Arc<Database> {
+		&self.db
+	}
 }
 
 #[cfg(test)]

ethcore/src/cache_manager.rs

@@ -66,7 +66,7 @@ impl<T> CacheManager<T> where T: Eq + Hash {
 	}
 
 	fn rotate_cache_if_needed(&mut self) {
-		if self.cache_usage.len() == 0 { return }
+		if self.cache_usage.is_empty() { return }
 
 		if self.cache_usage[0].len() * self.bytes_per_cache_entry > self.pref_cache_size / COLLECTION_QUEUE_SIZE {
 			if let Some(cache) = self.cache_usage.pop_back() {

ethcore/src/client/client.rs

@@ -60,12 +60,13 @@ use receipt::LocalizedReceipt;
 use trace::{TraceDB, ImportRequest as TraceImportRequest, LocalizedTrace, Database as TraceDatabase};
 use trace;
 use trace::FlatTransactionTraces;
-use evm::Factory as EvmFactory;
+use evm::{Factory as EvmFactory, Schedule};
 use miner::{Miner, MinerService};
 use snapshot::{self, io as snapshot_io};
 use factory::Factories;
 use rlp::{View, UntrustedRlp};
 use state_db::StateDB;
+use rand::OsRng;
 
 // re-export
 pub use types::blockchain_info::BlockChainInfo;
@@ -144,6 +145,7 @@ pub struct Client {
 	last_hashes: RwLock<VecDeque<H256>>,
 	factories: Factories,
 	history: u64,
+	rng: Mutex<OsRng>,
 }
 
 impl Client {
@@ -239,6 +241,7 @@ impl Client {
 			last_hashes: RwLock::new(VecDeque::new()),
 			factories: factories,
 			history: history,
+			rng: Mutex::new(try!(OsRng::new().map_err(::util::UtilError::StdIo))),
 		};
 		Ok(Arc::new(client))
 	}
@@ -314,7 +317,7 @@ impl Client {
 		if let Some(parent) = chain_has_parent {
 			// Enact Verified Block
 			let last_hashes = self.build_last_hashes(header.parent_hash().clone());
-			let db = self.state_db.lock().boxed_clone_canon(&header.parent_hash());
+			let db = self.state_db.lock().boxed_clone_canon(header.parent_hash());
 
 			let enact_result = enact_verified(block, engine, self.tracedb.read().tracing_enabled(), db, &parent, last_hashes, self.factories.clone());
 			let locked_block = try!(enact_result.map_err(|e| {
@@ -434,14 +437,26 @@ impl Client {
 	/// Import a block with transaction receipts.
 	/// The block is guaranteed to be the next best blocks in the first block sequence.
 	/// Does no sealing or transaction validation.
-	fn import_old_block(&self, block_bytes: Bytes, receipts_bytes: Bytes) -> H256 {
+	fn import_old_block(&self, block_bytes: Bytes, receipts_bytes: Bytes) -> Result<H256, ::error::Error> {
 		let block = BlockView::new(&block_bytes);
-		let hash = block.header().hash();
+		let header = block.header();
+		let hash = header.hash();
 		let _import_lock = self.import_lock.lock();
 		{
 			let _timer = PerfTimer::new("import_old_block");
+			let mut rng = self.rng.lock();
 			let chain = self.chain.read();
 
+			// verify block.
+			try!(::snapshot::verify_old_block(
+				&mut *rng,
+				&header,
+				&*self.engine,
+				&*chain,
+				Some(&block_bytes),
+				false,
+			));
+
 			// Commit results
 			let receipts = ::rlp::decode(&receipts_bytes);
 			let mut batch = DBTransaction::new(&self.db.read());
@@ -451,7 +466,7 @@ impl Client {
 			chain.commit();
 		}
 		self.db.read().flush().expect("DB flush failed.");
-		hash
+		Ok(hash)
 	}
 
 	fn commit_block<B>(&self, block: B, hash: &H256, block_data: &[u8]) -> ImportRoute where B: IsBlock + Drain {
@@ -1042,7 +1057,7 @@ impl BlockChainClient for Client {
 				return Err(BlockImportError::Block(BlockError::UnknownParent(header.parent_hash())));
 			}
 		}
-		Ok(self.import_old_block(block_bytes, receipts_bytes))
+		self.import_old_block(block_bytes, receipts_bytes).map_err(Into::into)
 	}
 
 	fn queue_info(&self) -> BlockQueueInfo {
@@ -1145,6 +1160,23 @@ impl BlockChainClient for Client {
 }
 
 impl MiningBlockChainClient for Client {
+
+	fn latest_schedule(&self) -> Schedule {
+		let header_data = self.best_block_header();
+		let view = HeaderView::new(&header_data);
+
+		let env_info = EnvInfo {
+			number: view.number(),
+			author: view.author(),
+			timestamp: view.timestamp(),
+			difficulty: view.difficulty(),
+			last_hashes: self.build_last_hashes(view.hash()),
+			gas_used: U256::default(),
+			gas_limit: view.gas_limit(),
+		};
+		self.engine.schedule(&env_info)
+	}
+
 	fn prepare_open_block(&self, author: Address, gas_range_target: (U256, U256), extra_data: Bytes) -> OpenBlock {
 		let engine = &*self.engine;
 		let chain = self.chain.read();
@@ -1220,3 +1252,33 @@ impl MayPanic for Client {
 		self.panic_handler.on_panic(closure);
 	}
 }
+
+
+#[test]
+fn should_not_cache_details_before_commit() {
+	use tests::helpers::*;
+	use std::thread;
+	use std::time::Duration;
+	use std::sync::atomic::{AtomicBool, Ordering};
+
+	let client = generate_dummy_client(0);
+	let genesis = client.chain_info().best_block_hash;
+	let (new_hash, new_block) = get_good_dummy_block_hash();
+
+	let go = {
+		// Separate thread uncommited transaction
+		let go = Arc::new(AtomicBool::new(false));
+		let go_thread = go.clone();
+		let another_client = client.reference().clone();
+		thread::spawn(move || {
+			let mut batch = DBTransaction::new(&*another_client.chain.read().db().clone());
+			another_client.chain.read().insert_block(&mut batch, &new_block, Vec::new());
+			go_thread.store(true, Ordering::SeqCst);
+		});
+		go
+	};
+
+	while !go.load(Ordering::SeqCst) { thread::park_timeout(Duration::from_millis(5)); }
+
+	assert!(client.tree_route(&genesis, &new_hash).is_none());
+}

ethcore/src/client/test_client.rs

@@ -34,7 +34,7 @@ use log_entry::LocalizedLogEntry;
 use receipt::{Receipt, LocalizedReceipt};
 use blockchain::extras::BlockReceipts;
 use error::{ImportResult};
-use evm::{Factory as EvmFactory, VMType};
+use evm::{Factory as EvmFactory, VMType, Schedule};
 use miner::{Miner, MinerService, TransactionImportResult};
 use spec::Spec;
 
@@ -316,6 +316,10 @@ pub fn get_temp_state_db() -> GuardedTempResult<StateDB> {
 }
 
 impl MiningBlockChainClient for TestBlockChainClient {
+	fn latest_schedule(&self) -> Schedule {
+		Schedule::new_homestead_gas_fix()
+	}
+
 	fn prepare_open_block(&self, author: Address, gas_range_target: (U256, U256), extra_data: Bytes) -> OpenBlock {
 		let engine = &*self.spec.engine;
 		let genesis_header = self.spec.genesis_header();

ethcore/src/client/traits.rs

@@ -27,7 +27,7 @@ use views::{BlockView};
 use error::{ImportResult, CallError};
 use receipt::LocalizedReceipt;
 use trace::LocalizedTrace;
-use evm::Factory as EvmFactory;
+use evm::{Factory as EvmFactory, Schedule};
 use types::ids::*;
 use types::trace_filter::Filter as TraceFilter;
 use executive::Executed;
@@ -236,6 +236,9 @@ pub trait MiningBlockChainClient : BlockChainClient {
 
 	/// Import sealed block. Skips all verifications.
 	fn import_sealed_block(&self, block: SealedBlock) -> ImportResult;
+
+	/// Returns latest schedule.
+	fn latest_schedule(&self) -> Schedule;
 }
 
 impl IpcConfig for BlockChainClient { }

ethcore/src/db.rs

@@ -114,7 +114,7 @@ pub trait Writable {
 	R: Deref<Target = [u8]> {
 		match policy {
 			CacheUpdatePolicy::Overwrite => {
-				for (key, value) in values.into_iter() {
+				for (key, value) in values {
 					self.write(col, &key, &value);
 					cache.insert(key, value);
 				}
@@ -135,7 +135,7 @@ pub trait Writable {
 	R: Deref<Target = [u8]> {
 		match policy {
 			CacheUpdatePolicy::Overwrite => {
-				for (key, value) in values.into_iter() {
+				for (key, value) in values {
 					match value {
 						Some(ref v) => self.write(col, &key, v),
 						None => self.delete(col, &key),
@@ -144,7 +144,7 @@ pub trait Writable {
 				}
 			},
 			CacheUpdatePolicy::Remove => {
-				for (key, value) in values.into_iter() {
+				for (key, value) in values {
 					match value {
 						Some(v) => self.write(col, &key, &v),
 						None => self.delete(col, &key),

ethcore/src/error.rs

@@ -47,6 +47,13 @@ pub enum TransactionError {
 		/// Transaction gas price
 		got: U256,
 	},
+	/// Transaction's gas is below currently set minimal gas requirement.
+	InsufficientGas {
+		/// Minimal expected gas
+		minimal: U256,
+		/// Transaction gas
+		got: U256,
+	},
 	/// Sender doesn't have enough funds to pay for this transaction
 	InsufficientBalance {
 		/// Senders balance
@@ -63,6 +70,12 @@ pub enum TransactionError {
 	},
 	/// Transaction's gas limit (aka gas) is invalid.
 	InvalidGasLimit(OutOfBounds<U256>),
+	/// Transaction sender is banned.
+	SenderBanned,
+	/// Transaction receipient is banned.
+	RecipientBanned,
+	/// Contract creation code is banned.
+	CodeBanned,
 }
 
 impl fmt::Display for TransactionError {
@@ -75,12 +88,17 @@ impl fmt::Display for TransactionError {
 			LimitReached => "Transaction limit reached".into(),
 			InsufficientGasPrice { minimal, got } =>
 				format!("Insufficient gas price. Min={}, Given={}", minimal, got),
+			InsufficientGas { minimal, got } =>
+				format!("Insufficient gas. Min={}, Given={}", minimal, got),
 			InsufficientBalance { balance, cost } =>
 				format!("Insufficient balance for transaction. Balance={}, Cost={}",
 					balance, cost),
 			GasLimitExceeded { limit, got } =>
 				format!("Gas limit exceeded. Limit={}, Given={}", limit, got),
 			InvalidGasLimit(ref err) => format!("Invalid gas limit. {}", err),
+			SenderBanned => "Sender is temporarily banned.".into(),
+			RecipientBanned => "Recipient is temporarily banned.".into(),
+			CodeBanned => "Contract code is temporarily banned.".into(),
 		};
 
 		f.write_fmt(format_args!("Transaction error ({})", msg))

ethcore/src/evm/instructions.rs

@@ -173,7 +173,7 @@ lazy_static! {
 		arr[SIGNEXTEND as usize] =		InstructionInfo::new("SIGNEXTEND",		0, 2, 1, false, GasPriceTier::Low);
 		arr[SHA3 as usize] =			InstructionInfo::new("SHA3",			0, 2, 1, false, GasPriceTier::Special);
 		arr[ADDRESS as usize] = 		InstructionInfo::new("ADDRESS",			0, 0, 1, false, GasPriceTier::Base);
-		arr[BALANCE as usize] = 		InstructionInfo::new("BALANCE",			0, 1, 1, false, GasPriceTier::Ext);
+		arr[BALANCE as usize] = 		InstructionInfo::new("BALANCE",			0, 1, 1, false, GasPriceTier::Special);
 		arr[ORIGIN as usize] =			InstructionInfo::new("ORIGIN",			0, 0, 1, false, GasPriceTier::Base);
 		arr[CALLER as usize] =			InstructionInfo::new("CALLER",			0, 0, 1, false, GasPriceTier::Base);
 		arr[CALLVALUE as usize] =		InstructionInfo::new("CALLVALUE",		0, 0, 1, false, GasPriceTier::Base);
@@ -183,8 +183,8 @@ lazy_static! {
 		arr[CODESIZE as usize] =		InstructionInfo::new("CODESIZE",		0, 0, 1, false, GasPriceTier::Base);
 		arr[CODECOPY as usize] =		InstructionInfo::new("CODECOPY",		0, 3, 0, true, GasPriceTier::VeryLow);
 		arr[GASPRICE as usize] =		InstructionInfo::new("GASPRICE",		0, 0, 1, false, GasPriceTier::Base);
-		arr[EXTCODESIZE as usize] = 	InstructionInfo::new("EXTCODESIZE",		0, 1, 1, false, GasPriceTier::Ext);
+		arr[EXTCODESIZE as usize] = 	InstructionInfo::new("EXTCODESIZE",		0, 1, 1, false, GasPriceTier::Special);
-		arr[EXTCODECOPY as usize] = 	InstructionInfo::new("EXTCODECOPY",		0, 4, 0, true, GasPriceTier::Ext);
+		arr[EXTCODECOPY as usize] = 	InstructionInfo::new("EXTCODECOPY",		0, 4, 0, true, GasPriceTier::Special);
 		arr[BLOCKHASH as usize] =		InstructionInfo::new("BLOCKHASH",		0, 1, 1, false, GasPriceTier::Ext);
 		arr[COINBASE as usize] =		InstructionInfo::new("COINBASE",		0, 0, 1, false, GasPriceTier::Base);
 		arr[TIMESTAMP as usize] =		InstructionInfo::new("TIMESTAMP",		0, 0, 1, false, GasPriceTier::Base);
@@ -277,7 +277,7 @@ lazy_static! {
 		arr[CALLCODE as usize] =		InstructionInfo::new("CALLCODE",		0, 7, 1, true, GasPriceTier::Special);
 		arr[RETURN as usize] =			InstructionInfo::new("RETURN",			0, 2, 0, true, GasPriceTier::Zero);
 		arr[DELEGATECALL as usize] =	InstructionInfo::new("DELEGATECALL",	0, 6, 1, true, GasPriceTier::Special);
-		arr[SUICIDE as usize] = 		InstructionInfo::new("SUICIDE",			0, 1, 0, true, GasPriceTier::Zero);
+		arr[SUICIDE as usize] = 		InstructionInfo::new("SUICIDE",			0, 1, 0, true, GasPriceTier::Special);
 		arr
 	};
 }

ethcore/src/evm/interpreter/gasometer.rs

@@ -30,12 +30,20 @@ macro_rules! overflowing {
 }
 
 #[cfg_attr(feature="dev", allow(enum_variant_names))]
-enum InstructionCost<Cost: CostType> {
+enum Request<Cost: CostType> {
 	Gas(Cost),
-	GasMem(Cost, Cost, Option<Cost>),
+	GasMem(Cost, Cost),
+	GasMemProvide(Cost, Cost, Option<U256>),
 	GasMemCopy(Cost, Cost, Cost)
 }
 
+pub struct InstructionRequirements<Cost: CostType> {
+	pub gas_cost: Cost,
+	pub provide_gas: Option<Cost>,
+	pub memory_total_gas: Cost,
+	pub memory_required_size: usize,
+}
+
 pub struct Gasometer<Gas: CostType> {
 	pub current_gas: Gas,
 	pub current_mem_gas: Gas,
@@ -59,11 +67,19 @@ impl<Gas: CostType> Gasometer<Gas> {
 
 	/// How much gas is provided to a CALL/CREATE, given that we need to deduct `needed` for this operation
 	/// and that we `requested` some.
-	pub fn gas_provided(&self, schedule: &Schedule, needed: Gas, requested: Option<evm::Result<Gas>>) -> evm::Result<Gas> {
+	pub fn gas_provided(&self, schedule: &Schedule, needed: Gas, requested: Option<U256>) -> evm::Result<Gas> {
+		// Try converting requested gas to `Gas` (`U256/u64`)
+		// but in EIP150 even if we request more we should never fail from OOG
+		let requested = requested.map(Gas::from_u256);
+
 		match schedule.sub_gas_cap_divisor {
 			Some(cap_divisor) if self.current_gas >= needed => {
 				let gas_remaining = self.current_gas - needed;
-				let max_gas_provided = gas_remaining - gas_remaining / Gas::from(cap_divisor);
+				let max_gas_provided = match cap_divisor {
+					64 => gas_remaining - (gas_remaining >> 6),
+					cap_divisor => gas_remaining - gas_remaining / Gas::from(cap_divisor),
+				};
+
 				if let Some(Ok(r)) = requested {
 					Ok(min(r, max_gas_provided))
 				} else {
@@ -78,7 +94,7 @@ impl<Gas: CostType> Gasometer<Gas> {
 				} else {
 					Ok(0.into())
 				}
-			}
+			},
 		}
 	}
 
@@ -88,21 +104,21 @@ impl<Gas: CostType> Gasometer<Gas> {
 	/// We guarantee that the final element of the returned tuple (`provided`) will be `Some`
 	/// iff the `instruction` is one of `CREATE`, or any of the `CALL` variants. In this case,
 	/// it will be the amount of gas that the current context provides to the child context.
-	pub fn get_gas_cost_mem(
+	pub fn requirements(
 		&mut self,
 		ext: &evm::Ext,
 		instruction: Instruction,
 		info: &InstructionInfo,
 		stack: &Stack<U256>,
 		current_mem_size: usize,
-	) -> evm::Result<(Gas, Gas, usize, Option<Gas>)> {
+	) -> evm::Result<InstructionRequirements<Gas>> {
 		let schedule = ext.schedule();
 		let tier = instructions::get_tier_idx(info.tier);
 		let default_gas = Gas::from(schedule.tier_step_gas[tier]);
 
 		let cost = match instruction {
 			instructions::JUMPDEST => {
-				InstructionCost::Gas(Gas::from(1))
+				Request::Gas(Gas::from(1))
 			},
 			instructions::SSTORE => {
 				let address = H256::from(stack.peek(0));
@@ -116,16 +132,16 @@ impl<Gas: CostType> Gasometer<Gas> {
 					// !is_zero(&val) && is_zero(newval)
 					schedule.sstore_reset_gas
 				};
-				InstructionCost::Gas(Gas::from(gas))
+				Request::Gas(Gas::from(gas))
 			},
 			instructions::SLOAD => {
-				InstructionCost::Gas(Gas::from(schedule.sload_gas))
+				Request::Gas(Gas::from(schedule.sload_gas))
 			},
 			instructions::BALANCE => {
-				InstructionCost::Gas(Gas::from(schedule.balance_gas))
+				Request::Gas(Gas::from(schedule.balance_gas))
 			},
 			instructions::EXTCODESIZE => {
-				InstructionCost::Gas(Gas::from(schedule.extcodesize_gas))
+				Request::Gas(Gas::from(schedule.extcodesize_gas))
 			},
 			instructions::SUICIDE => {
 				let mut gas = Gas::from(schedule.suicide_gas);
@@ -135,28 +151,28 @@ impl<Gas: CostType> Gasometer<Gas> {
 					gas = overflowing!(gas.overflow_add(schedule.suicide_to_new_account_cost.into()));
 				}
 
-				InstructionCost::Gas(gas)
+				Request::Gas(gas)
 			},
 			instructions::MSTORE | instructions::MLOAD => {
-				InstructionCost::GasMem(default_gas, try!(mem_needed_const(stack.peek(0), 32)), None)
+				Request::GasMem(default_gas, try!(mem_needed_const(stack.peek(0), 32)))
 			},
 			instructions::MSTORE8 => {
-				InstructionCost::GasMem(default_gas, try!(mem_needed_const(stack.peek(0), 1)), None)
+				Request::GasMem(default_gas, try!(mem_needed_const(stack.peek(0), 1)))
 			},
 			instructions::RETURN => {
-				InstructionCost::GasMem(default_gas, try!(mem_needed(stack.peek(0), stack.peek(1))), None)
+				Request::GasMem(default_gas, try!(mem_needed(stack.peek(0), stack.peek(1))))
 			},
 			instructions::SHA3 => {
 				let w = overflowing!(add_gas_usize(try!(Gas::from_u256(*stack.peek(1))), 31));
 				let words = w >> 5;
 				let gas = Gas::from(schedule.sha3_gas) + (Gas::from(schedule.sha3_word_gas) * words);
-				InstructionCost::GasMem(gas, try!(mem_needed(stack.peek(0), stack.peek(1))), None)
+				Request::GasMem(gas, try!(mem_needed(stack.peek(0), stack.peek(1))))
 			},
 			instructions::CALLDATACOPY | instructions::CODECOPY => {
-				InstructionCost::GasMemCopy(default_gas, try!(mem_needed(stack.peek(0), stack.peek(2))), try!(Gas::from_u256(*stack.peek(2))))
+				Request::GasMemCopy(default_gas, try!(mem_needed(stack.peek(0), stack.peek(2))), try!(Gas::from_u256(*stack.peek(2))))
 			},
 			instructions::EXTCODECOPY => {
-				InstructionCost::GasMemCopy(schedule.extcodecopy_base_gas.into(), try!(mem_needed(stack.peek(1), stack.peek(3))), try!(Gas::from_u256(*stack.peek(3))))
+				Request::GasMemCopy(schedule.extcodecopy_base_gas.into(), try!(mem_needed(stack.peek(1), stack.peek(3))), try!(Gas::from_u256(*stack.peek(3))))
 			},
 			instructions::LOG0...instructions::LOG4 => {
 				let no_of_topics = instructions::get_log_topics(instruction);
@@ -164,7 +180,7 @@ impl<Gas: CostType> Gasometer<Gas> {
 
 				let data_gas = overflowing!(try!(Gas::from_u256(*stack.peek(1))).overflow_mul(Gas::from(schedule.log_data_gas)));
 				let gas = overflowing!(data_gas.overflow_add(Gas::from(log_gas)));
-				InstructionCost::GasMem(gas, try!(mem_needed(stack.peek(0), stack.peek(1))), None)
+				Request::GasMem(gas, try!(mem_needed(stack.peek(0), stack.peek(1))))
 			},
 			instructions::CALL | instructions::CALLCODE => {
 				let mut gas = Gas::from(schedule.call_gas);
@@ -183,70 +199,82 @@ impl<Gas: CostType> Gasometer<Gas> {
 					gas = overflowing!(gas.overflow_add(schedule.call_value_transfer_gas.into()));
 				};
 
-				// TODO: refactor to avoid duplicate calculation here and later on.
+				let requested = *stack.peek(0);
-				let (mem_gas_cost, _, _) = try!(self.mem_gas_cost(schedule, current_mem_size, &mem));
-				let cost_so_far = overflowing!(gas.overflow_add(mem_gas_cost.into()));
-				let requested = Gas::from_u256(*stack.peek(0));
-				let provided = try!(self.gas_provided(schedule, cost_so_far, Some(requested)));
-				gas = overflowing!(gas.overflow_add(provided));
 
-				InstructionCost::GasMem(gas, mem, Some(provided))
+				Request::GasMemProvide(gas, mem, Some(requested))
 			},
 			instructions::DELEGATECALL => {
-				let mut gas = Gas::from(schedule.call_gas);
+				let gas = Gas::from(schedule.call_gas);
 				let mem = cmp::max(
 					try!(mem_needed(stack.peek(4), stack.peek(5))),
 					try!(mem_needed(stack.peek(2), stack.peek(3)))
 				);
+				let requested = *stack.peek(0);
 
-				// TODO: refactor to avoid duplicate calculation here and later on.
+				Request::GasMemProvide(gas, mem, Some(requested))
-				let (mem_gas_cost, _, _) = try!(self.mem_gas_cost(schedule, current_mem_size, &mem));
-				let cost_so_far = overflowing!(gas.overflow_add(mem_gas_cost.into()));
-				let requested = Gas::from_u256(*stack.peek(0));
-				let provided = try!(self.gas_provided(schedule, cost_so_far, Some(requested)));
-				gas = overflowing!(gas.overflow_add(provided));
-
-				InstructionCost::GasMem(gas, mem, Some(provided))
 			},
 			instructions::CREATE => {
-				let mut gas = Gas::from(schedule.create_gas);
+				let gas = Gas::from(schedule.create_gas);
 				let mem = try!(mem_needed(stack.peek(1), stack.peek(2)));
 
-				// TODO: refactor to avoid duplicate calculation here and later on.
+				Request::GasMemProvide(gas, mem, None)
-				let (mem_gas_cost, _, _) = try!(self.mem_gas_cost(schedule, current_mem_size, &mem));
-				let cost_so_far = overflowing!(gas.overflow_add(mem_gas_cost.into()));
-				let provided = try!(self.gas_provided(schedule, cost_so_far, None));
-				gas = overflowing!(gas.overflow_add(provided));
-
-				InstructionCost::GasMem(gas, mem, Some(provided))
 			},
 			instructions::EXP => {
 				let expon = stack.peek(1);
 				let bytes = ((expon.bits() + 7) / 8) as usize;
 				let gas = Gas::from(schedule.exp_gas + schedule.exp_byte_gas * bytes);
-				InstructionCost::Gas(gas)
+				Request::Gas(gas)
 			},
-			_ => InstructionCost::Gas(default_gas),
+			_ => Request::Gas(default_gas),
 		};
 
-		match cost {
+		Ok(match cost {
-			InstructionCost::Gas(gas) => {
+			Request::Gas(gas) => {
-				Ok((gas, self.current_mem_gas, 0, None))
+				InstructionRequirements {
+					gas_cost: gas,
+					provide_gas: None,
+					memory_required_size: 0,
+					memory_total_gas: self.current_mem_gas,
+				}
 			},
-			InstructionCost::GasMem(gas, mem_size, provided) => {
+			Request::GasMem(gas, mem_size) => {
 				let (mem_gas_cost, new_mem_gas, new_mem_size) = try!(self.mem_gas_cost(schedule, current_mem_size, &mem_size));
 				let gas = overflowing!(gas.overflow_add(mem_gas_cost));
-				Ok((gas, new_mem_gas, new_mem_size, provided))
+				InstructionRequirements {
+					gas_cost: gas,
+					provide_gas: None,
+					memory_required_size: new_mem_size,
+					memory_total_gas: new_mem_gas,
+				}
 			},
-			InstructionCost::GasMemCopy(gas, mem_size, copy) => {
+			Request::GasMemProvide(gas, mem_size, requested) => {
+				let (mem_gas_cost, new_mem_gas, new_mem_size) = try!(self.mem_gas_cost(schedule, current_mem_size, &mem_size));
+				let gas = overflowing!(gas.overflow_add(mem_gas_cost));
+				let provided = try!(self.gas_provided(schedule, gas, requested));
+				let total_gas = overflowing!(gas.overflow_add(provided));
+
+				InstructionRequirements {
+					gas_cost: total_gas,
+					provide_gas: Some(provided),
+					memory_required_size: new_mem_size,
+					memory_total_gas: new_mem_gas,
+				}
+			},
+			Request::GasMemCopy(gas, mem_size, copy) => {
 				let (mem_gas_cost, new_mem_gas, new_mem_size) = try!(self.mem_gas_cost(schedule, current_mem_size, &mem_size));
 				let copy = overflowing!(add_gas_usize(copy, 31)) >> 5;
 				let copy_gas = Gas::from(schedule.copy_gas) * copy;
 				let gas = overflowing!(gas.overflow_add(copy_gas));
 				let gas = overflowing!(gas.overflow_add(mem_gas_cost));
-				Ok((gas, new_mem_gas, new_mem_size, None))
+
-			}
+				InstructionRequirements {
-		}
+					gas_cost: gas,
+					provide_gas: None,
+					memory_required_size: new_mem_size,
+					memory_total_gas: new_mem_gas,
+				}
+			},
+		})
 	}
 
 	fn mem_gas_cost(&self, schedule: &evm::Schedule, current_mem_size: usize, mem_size: &Gas) -> evm::Result<(Gas, Gas, usize)> {
@@ -256,7 +284,7 @@ impl<Gas: CostType> Gasometer<Gas> {
 			let a = overflowing!(s.overflow_mul(Gas::from(schedule.memory_gas)));
 
 			// Calculate s*s/quad_coeff_div
-			debug_assert_eq!(schedule.quad_coeff_div, 512);
+			assert_eq!(schedule.quad_coeff_div, 512);
 			let b = overflowing!(s.overflow_mul_shr(s, 9));
 			Ok(overflowing!(a.overflow_add(b)))
 		};
@@ -328,3 +356,4 @@ fn test_calculate_mem_cost() {
 	assert_eq!(new_mem_gas, 3);
 	assert_eq!(mem_size, 32);
 }
+

ethcore/src/evm/interpreter/mod.rs

@@ -54,14 +54,14 @@ const TWO_POW_248: U256 = U256([0, 0, 0, 0x100000000000000]); //0x1 00000000 000
 /// Abstraction over raw vector of Bytes. Easier state management of PC.
 struct CodeReader<'a> {
 	position: ProgramCounter,
-	code: &'a Bytes
+	code: &'a [u8]
 }
 
 #[cfg_attr(feature="dev", allow(len_without_is_empty))]
 impl<'a> CodeReader<'a> {
 
 	/// Create new code reader - starting at position 0.
-	fn new(code: &'a Bytes) -> Self {
+	fn new(code: &'a [u8]) -> Self {
 		CodeReader {
 			position: 0,
 			code: code,
@@ -120,14 +120,14 @@ impl<Cost: CostType> evm::Evm for Interpreter<Cost> {
 			try!(self.verify_instruction(ext, instruction, info, &stack));
 
 			// Calculate gas cost
-			let (gas_cost, mem_gas, mem_size, provided) = try!(gasometer.get_gas_cost_mem(ext, instruction, info, &stack, self.mem.size()));
+			let requirements = try!(gasometer.requirements(ext, instruction, info, &stack, self.mem.size()));
 			// TODO: make compile-time removable if too much of a performance hit.
-			let trace_executed = ext.trace_prepare_execute(reader.position - 1, instruction, &gas_cost.as_u256());
+			let trace_executed = ext.trace_prepare_execute(reader.position - 1, instruction, &requirements.gas_cost.as_u256());
 
-			try!(gasometer.verify_gas(&gas_cost));
+			try!(gasometer.verify_gas(&requirements.gas_cost));
-			self.mem.expand(mem_size);
+			self.mem.expand(requirements.memory_required_size);
-			gasometer.current_mem_gas = mem_gas;
+			gasometer.current_mem_gas = requirements.memory_total_gas;
-			gasometer.current_gas = gasometer.current_gas - gas_cost;
+			gasometer.current_gas = gasometer.current_gas - requirements.gas_cost;
 
 			evm_debug!({ informant.before_instruction(reader.position, instruction, info, &gasometer.current_gas, &stack) });
 
@@ -138,7 +138,7 @@ impl<Cost: CostType> evm::Evm for Interpreter<Cost> {
 
 			// Execute instruction
 			let result = try!(self.exec_instruction(
-				gasometer.current_gas, &params, ext, instruction, &mut reader, &mut stack, provided
+				gasometer.current_gas, &params, ext, instruction, &mut reader, &mut stack, requirements.provide_gas
 			));
 
 			evm_debug!({ informant.after_instruction(instruction) });

ethcore/src/evm/interpreter/shared_cache.rs

@@ -15,20 +15,27 @@
 // along with Parity.  If not, see <http://www.gnu.org/licenses/>.
 
 use std::sync::Arc;
-use lru_cache::LruCache;
+use util::{H256, HeapSizeOf, Mutex};
-use util::{H256, Mutex};
 use util::sha3::*;
+use util::cache::MemoryLruCache;
 use bit_set::BitSet;
 use super::super::instructions;
 
-const INITIAL_CAPACITY: usize = 32;
 const DEFAULT_CACHE_SIZE: usize = 4 * 1024 * 1024;
 
+// stub for a HeapSizeOf implementation.
+struct Bits(Arc<BitSet>);
+
+impl HeapSizeOf for Bits {
+	fn heap_size_of_children(&self) -> usize {
+		// dealing in bits here
+		self.0.capacity() * 8
+	}
+}
+
 /// Global cache for EVM interpreter
 pub struct SharedCache {
-	jump_destinations: Mutex<LruCache<H256, Arc<BitSet>>>,
+	jump_destinations: Mutex<MemoryLruCache<H256, Bits>>,
-	max_size: usize,
-	cur_size: Mutex<usize>,
 }
 
 impl SharedCache {
@@ -36,9 +43,7 @@ impl SharedCache {
 	/// to cache.
 	pub fn new(max_size: usize) -> Self {
 		SharedCache {
-			jump_destinations: Mutex::new(LruCache::new(INITIAL_CAPACITY)),
+			jump_destinations: Mutex::new(MemoryLruCache::new(max_size)),
-			max_size: max_size * 8, // dealing with bits here.
-			cur_size: Mutex::new(0),
 		}
 	}
 
@@ -49,37 +54,11 @@ impl SharedCache {
 		}
 
 		if let Some(d) = self.jump_destinations.lock().get_mut(code_hash) {
-			return d.clone();
+			return d.0.clone();
 		}
 
 		let d = Self::find_jump_destinations(code);
-
+		self.jump_destinations.lock().insert(code_hash.clone(), Bits(d.clone()));
-		{
-			let mut cur_size = self.cur_size.lock();
-			*cur_size += d.capacity();
-
-			let mut jump_dests = self.jump_destinations.lock();
-			let cap = jump_dests.capacity();
-
-			// grow the cache as necessary; it operates on amount of items
-			// but we're working based on memory usage.
-			if jump_dests.len() == cap && *cur_size < self.max_size {
-				jump_dests.set_capacity(cap * 2);
-			}
-
-			// account for any element displaced from the cache.
-			if let Some(lru) = jump_dests.insert(code_hash.clone(), d.clone()) {
-				*cur_size -= lru.capacity();
-			}
-
-			// remove elements until we are below the memory target.
-			while *cur_size > self.max_size {
-				match jump_dests.remove_lru() {
-					Some((_, v)) => *cur_size -= v.capacity(),
-					_ => break,
-				}
-			}
-		}
 
 		d
 	}

ethcore/src/lib.rs

@@ -101,6 +101,7 @@ extern crate bit_set;
 extern crate rlp;
 extern crate ethcore_bloom_journal as bloom_journal;
 extern crate byteorder;
+extern crate transient_hashmap;
 
 #[macro_use]
 extern crate log;

ethcore/src/migrations/v10.rs

@@ -61,7 +61,7 @@ pub fn generate_bloom(source: Arc<Database>, dest: &mut Database) -> Result<(),
 		let account_trie = try!(TrieDB::new(state_db.as_hashdb(), &state_root).map_err(|e| Error::Custom(format!("Cannot open trie: {:?}", e))));
 		for item in try!(account_trie.iter().map_err(|_| Error::MigrationImpossible)) {
 			let (ref account_key, _) = try!(item.map_err(|_| Error::MigrationImpossible));
-			let account_key_hash = H256::from_slice(&account_key);
+			let account_key_hash = H256::from_slice(account_key);
 			bloom.set(&*account_key_hash);
 		}
 

ethcore/src/miner/banning_queue.rs

@@ -0,0 +1,339 @@
+// 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/>.
+
+//! Banning Queue
+//! Transacton Queue wrapper maintaining additional list of banned senders and contract hashes.
+
+use std::time::Duration;
+use std::ops::{Deref, DerefMut};
+use std::cell::Cell;
+use transaction::{SignedTransaction, Action};
+use transient_hashmap::TransientHashMap;
+use miner::{TransactionQueue, TransactionImportResult, TransactionOrigin, AccountDetails};
+use error::{Error, TransactionError};
+use util::{Uint, U256, H256, Address, Hashable};
+
+type Count = u16;
+
+/// Auto-Banning threshold
+pub enum Threshold {
+	/// Should ban after given number of misbehaves reported.
+	BanAfter(Count),
+	/// Should never ban anything
+	NeverBan
+}
+
+impl Default for Threshold {
+	fn default() -> Self {
+		Threshold::NeverBan
+	}
+}
+
+/// Transaction queue with banlist.
+pub struct BanningTransactionQueue {
+	queue: TransactionQueue,
+	ban_threshold: Threshold,
+	senders_bans: TransientHashMap<Address, Cell<Count>>,
+	recipients_bans: TransientHashMap<Address, Cell<Count>>,
+	codes_bans: TransientHashMap<H256, Cell<Count>>,
+}
+
+impl BanningTransactionQueue {
+	/// Creates new banlisting transaction queue
+	pub fn new(queue: TransactionQueue, ban_threshold: Threshold, ban_lifetime: Duration) -> Self {
+		let ban_lifetime_sec = ban_lifetime.as_secs();
+		assert!(ban_lifetime_sec > 0, "Lifetime has to be specified in seconds.");
+		BanningTransactionQueue {
+			queue: queue,
+			ban_threshold: ban_threshold,
+			senders_bans: TransientHashMap::new(ban_lifetime_sec),
+			recipients_bans: TransientHashMap::new(ban_lifetime_sec),
+			codes_bans: TransientHashMap::new(ban_lifetime_sec),
+		}
+	}
+
+	/// Borrows internal queue.
+	/// NOTE: you can insert transactions to the queue even
+	/// if they would be rejected because of ban otherwise.
+	/// But probably you shouldn't.
+	pub fn queue(&mut self) -> &mut TransactionQueue {
+		&mut self.queue
+	}
+
+	/// Add to the queue taking bans into consideration.
+	/// May reject transaction because of the banlist.
+	pub fn add_with_banlist<F, G>(
+		&mut self,
+		transaction: SignedTransaction,
+		account_details: &F,
+		gas_estimator: &G,
+	) -> Result<TransactionImportResult, Error> where
+		F: Fn(&Address) -> AccountDetails,
+		G: Fn(&SignedTransaction) -> U256,
+	{
+		if let Threshold::BanAfter(threshold) = self.ban_threshold {
+			// NOTE In all checks use direct query to avoid increasing ban timeout.
+
+			// Check sender
+			if let Ok(sender) = transaction.sender() {
+				let count = self.senders_bans.direct().get(&sender).map(|v| v.get()).unwrap_or(0);
+				if count > threshold {
+					debug!(target: "txqueue", "Ignoring transaction {:?} because sender is banned.", transaction.hash());
+					return Err(Error::Transaction(TransactionError::SenderBanned));
+				}
+			}
+
+			// Check recipient
+			if let Action::Call(recipient) = transaction.action {
+				let count = self.recipients_bans.direct().get(&recipient).map(|v| v.get()).unwrap_or(0);
+				if count > threshold {
+					debug!(target: "txqueue", "Ignoring transaction {:?} because recipient is banned.", transaction.hash());
+					return Err(Error::Transaction(TransactionError::RecipientBanned));
+				}
+			}
+
+			// Check code
+			if let Action::Create = transaction.action {
+				let code_hash = transaction.data.sha3();
+				let count = self.codes_bans.direct().get(&code_hash).map(|v| v.get()).unwrap_or(0);
+				if count > threshold {
+					debug!(target: "txqueue", "Ignoring transaction {:?} because code is banned.", transaction.hash());
+					return Err(Error::Transaction(TransactionError::CodeBanned));
+				}
+			}
+		}
+		self.queue.add(transaction, TransactionOrigin::External, account_details, gas_estimator)
+	}
+
+	/// Ban transaction with given hash.
+	/// Transaction has to be in the queue.
+	///
+	/// Bans sender and recipient/code and returns `true` when any ban has reached threshold.
+	pub fn ban_transaction(&mut self, hash: &H256) -> bool {
+		let transaction = self.queue.find(hash);
+		match transaction {
+			Some(transaction) => {
+				let sender = transaction.sender().expect("Transaction is in queue, so the sender is already validated; qed");
+				// Ban sender
+				let sender_banned = self.ban_sender(sender);
+				// Ban recipient and codehash
+				let is_banned = sender_banned || match transaction.action {
+					Action::Call(recipient) => {
+						self.ban_recipient(recipient)
+					},
+					Action::Create => {
+						self.ban_codehash(transaction.data.sha3())
+					},
+				};
+				is_banned
+			},
+			None => false,
+		}
+	}
+
+	/// Ban given sender.
+	/// If bans threshold is reached all subsequent transactions from this sender will be rejected.
+	/// Reaching bans threshold also removes all existsing transaction from this sender that are already in the
+	/// queue.
+	fn ban_sender(&mut self, address: Address) -> bool {
+		let count = {
+			let mut count = self.senders_bans.entry(address).or_insert_with(|| Cell::new(0));
+			*count.get_mut() = count.get().saturating_add(1);
+			count.get()
+		};
+		match self.ban_threshold {
+			Threshold::BanAfter(threshold) if count > threshold => {
+				// Banlist the sender.
+				// Remove all transactions from the queue.
+				self.remove_all(address, !U256::zero());
+				true
+			},
+			_ => false
+		}
+	}
+
+	/// Ban given recipient.
+	/// If bans threshold is reached all subsequent transactions to this address will be rejected.
+	/// Returns true if bans threshold has been reached.
+	fn ban_recipient(&mut self, address: Address) -> bool {
+		let count = {
+			let mut count = self.recipients_bans.entry(address).or_insert_with(|| Cell::new(0));
+			*count.get_mut() = count.get().saturating_add(1);
+			count.get()
+		};
+		match self.ban_threshold {
+			// TODO [ToDr] Consider removing other transactions to the same recipient from the queue?
+			Threshold::BanAfter(threshold) if count > threshold => true,
+			_ => false
+		}
+	}
+
+
+	/// Ban given codehash.
+	/// If bans threshold is reached all subsequent transactions to contracts with this codehash will be rejected.
+	/// Returns true if bans threshold has been reached.
+	fn ban_codehash(&mut self, code_hash: H256) -> bool {
+		let mut count = self.codes_bans.entry(code_hash).or_insert_with(|| Cell::new(0));
+		*count.get_mut() = count.get().saturating_add(1);
+
+		match self.ban_threshold {
+			// TODO [ToDr] Consider removing other transactions with the same code from the queue?
+			Threshold::BanAfter(threshold) if count.get() > threshold => true,
+			_ => false,
+		}
+	}
+}
+
+impl Deref for BanningTransactionQueue {
+	type Target = TransactionQueue;
+
+	fn deref(&self) -> &Self::Target {
+		&self.queue
+	}
+}
+impl DerefMut for BanningTransactionQueue {
+	fn deref_mut(&mut self) -> &mut Self::Target {
+		self.queue()
+	}
+}
+
+#[cfg(test)]
+mod tests {
+	use std::time::Duration;
+	use super::{BanningTransactionQueue, Threshold};
+	use ethkey::{Random, Generator};
+	use transaction::{Transaction, SignedTransaction, Action};
+	use error::{Error, TransactionError};
+	use client::TransactionImportResult;
+	use miner::{TransactionQueue, TransactionOrigin, AccountDetails};
+	use util::{Uint, U256, Address, FromHex, Hashable};
+
+	fn queue() -> BanningTransactionQueue {
+		BanningTransactionQueue::new(TransactionQueue::default(), Threshold::BanAfter(1), Duration::from_secs(180))
+	}
+
+	fn default_account_details(_address: &Address) -> AccountDetails {
+		AccountDetails {
+			nonce: U256::zero(),
+			balance: !U256::zero(),
+		}
+	}
+
+	fn gas_required(_tx: &SignedTransaction) -> U256 {
+		0.into()
+	}
+
+	fn transaction(action: Action) -> SignedTransaction {
+		let keypair = Random.generate().unwrap();
+		Transaction {
+			action: action,
+			value: U256::from(100),
+			data: "3331600055".from_hex().unwrap(),
+			gas: U256::from(100_000),
+			gas_price: U256::from(10),
+			nonce: U256::from(0),
+		}.sign(keypair.secret())
+	}
+
+	fn unwrap_err(res: Result<TransactionImportResult, Error>) -> TransactionError {
+		match res {
+			Err(Error::Transaction(e)) => e,
+			Ok(x) => panic!("Expected error, got: Ok({:?})", x),
+			Err(e) => panic!("Unexpected error type returned by queue: {:?}", e),
+		}
+	}
+
+	#[test]
+	fn should_allow_to_borrow_the_queue() {
+		// given
+		let tx = transaction(Action::Create);
+		let mut txq = queue();
+
+		// when
+		txq.queue().add(tx, TransactionOrigin::External, &default_account_details, &gas_required).unwrap();
+
+		// then
+		// should also deref to queue
+		assert_eq!(txq.status().pending, 1);
+	}
+
+	#[test]
+	fn should_not_accept_transactions_from_banned_sender() {
+		// given
+		let tx = transaction(Action::Create);
+		let mut txq = queue();
+		// Banlist once (threshold not reached)
+		let banlist1 = txq.ban_sender(tx.sender().unwrap());
+		assert!(!banlist1, "Threshold not reached yet.");
+		// Insert once
+		let import1 = txq.add_with_banlist(tx.clone(), &default_account_details, &gas_required).unwrap();
+		assert_eq!(import1, TransactionImportResult::Current);
+
+		// when
+		let banlist2 = txq.ban_sender(tx.sender().unwrap());
+		let import2 = txq.add_with_banlist(tx.clone(), &default_account_details, &gas_required);
+
+		// then
+		assert!(banlist2, "Threshold should be reached - banned.");
+		assert_eq!(unwrap_err(import2), TransactionError::SenderBanned);
+		// Should also remove transacion from the queue
+		assert_eq!(txq.find(&tx.hash()), None);
+	}
+
+	#[test]
+	fn should_not_accept_transactions_to_banned_recipient() {
+		// given
+		let recipient = Address::default();
+		let tx = transaction(Action::Call(recipient));
+		let mut txq = queue();
+		// Banlist once (threshold not reached)
+		let banlist1 = txq.ban_recipient(recipient);
+		assert!(!banlist1, "Threshold not reached yet.");
+		// Insert once
+		let import1 = txq.add_with_banlist(tx.clone(), &default_account_details, &gas_required).unwrap();
+		assert_eq!(import1, TransactionImportResult::Current);
+
+		// when
+		let banlist2 = txq.ban_recipient(recipient);
+		let import2 = txq.add_with_banlist(tx.clone(), &default_account_details, &gas_required);
+
+		// then
+		assert!(banlist2, "Threshold should be reached - banned.");
+		assert_eq!(unwrap_err(import2), TransactionError::RecipientBanned);
+	}
+
+	#[test]
+	fn should_not_accept_transactions_with_banned_code() {
+		// given
+		let tx = transaction(Action::Create);
+		let codehash = tx.data.sha3();
+		let mut txq = queue();
+		// Banlist once (threshold not reached)
+		let banlist1 = txq.ban_codehash(codehash);
+		assert!(!banlist1, "Threshold not reached yet.");
+		// Insert once
+		let import1 = txq.add_with_banlist(tx.clone(), &default_account_details, &gas_required).unwrap();
+		assert_eq!(import1, TransactionImportResult::Current);
+
+		// when
+		let banlist2 = txq.ban_codehash(codehash);
+		let import2 = txq.add_with_banlist(tx.clone(), &default_account_details, &gas_required);
+
+		// then
+		assert!(banlist2, "Threshold should be reached - banned.");
+		assert_eq!(unwrap_err(import2), TransactionError::CodeBanned);
+	}
+}

ethcore/src/miner/miner.rs

@@ -31,6 +31,7 @@ use receipt::{Receipt, RichReceipt};
 use spec::Spec;
 use engines::Engine;
 use miner::{MinerService, MinerStatus, TransactionQueue, PrioritizationStrategy, AccountDetails, TransactionOrigin};
+use miner::banning_queue::{BanningTransactionQueue, Threshold};
 use miner::work_notify::WorkPoster;
 use client::TransactionImportResult;
 use miner::price_info::PriceInfo;
@@ -59,6 +60,22 @@ pub enum GasLimit {
 	Fixed(U256),
 }
 
+/// Transaction queue banning settings.
+#[derive(Debug, PartialEq, Clone)]
+pub enum Banning {
+	/// Banning in transaction queue is disabled
+	Disabled,
+	/// Banning in transaction queue is enabled
+	Enabled {
+		/// Upper limit of transaction processing time before banning.
+		offend_threshold: Duration,
+		/// Number of similar offending transactions before banning.
+		min_offends: u16,
+		/// Number of seconds the offender is banned for.
+		ban_duration: Duration,
+	},
+}
+
 /// Configures the behaviour of the miner.
 #[derive(Debug, PartialEq)]
 pub struct MinerOptions {
@@ -86,6 +103,8 @@ pub struct MinerOptions {
 	pub enable_resubmission: bool,
 	/// Global gas limit for all transaction in the queue except for local and retracted.
 	pub tx_queue_gas_limit: GasLimit,
+	/// Banning settings
+	pub tx_queue_banning: Banning,
 }
 
 impl Default for MinerOptions {
@@ -98,11 +117,12 @@ impl Default for MinerOptions {
 			tx_gas_limit: !U256::zero(),
 			tx_queue_size: 1024,
 			tx_queue_gas_limit: GasLimit::Auto,
-			tx_queue_strategy: PrioritizationStrategy::GasFactorAndGasPrice,
+			tx_queue_strategy: PrioritizationStrategy::GasPriceOnly,
 			pending_set: PendingSet::AlwaysQueue,
 			reseal_min_period: Duration::from_secs(2),
 			work_queue_size: 20,
 			enable_resubmission: true,
+			tx_queue_banning: Banning::Disabled,
 		}
 	}
 }
@@ -186,7 +206,7 @@ struct SealingWork {
 /// Handles preparing work for "work sealing" or seals "internally" if Engine does not require work.
 pub struct Miner {
 	// NOTE [ToDr]  When locking always lock in this order!
-	transaction_queue: Arc<Mutex<TransactionQueue>>,
+	transaction_queue: Arc<Mutex<BanningTransactionQueue>>,
 	sealing_work: Mutex<SealingWork>,
 	next_allowed_reseal: Mutex<Instant>,
 	sealing_block_last_request: Mutex<u64>,
@@ -215,11 +235,18 @@ impl Miner {
 			GasLimit::Fixed(ref limit) => *limit,
 			_ => !U256::zero(),
 		};
-		let txq = Arc::new(Mutex::new(TransactionQueue::with_limits(
+
-			options.tx_queue_strategy, options.tx_queue_size, gas_limit, options.tx_gas_limit
+		let txq = TransactionQueue::with_limits(options.tx_queue_strategy, options.tx_queue_size, gas_limit, options.tx_gas_limit);
-		)));
+		let txq = match options.tx_queue_banning {
+			Banning::Disabled => BanningTransactionQueue::new(txq, Threshold::NeverBan, Duration::from_secs(180)),
+			Banning::Enabled { ban_duration, min_offends, .. } => BanningTransactionQueue::new(
+				txq,
+				Threshold::BanAfter(min_offends),
+				ban_duration,
+			),
+		};
 		Miner {
-			transaction_queue: txq,
+			transaction_queue: Arc::new(Mutex::new(txq)),
 			next_allowed_reseal: Mutex::new(Instant::now()),
 			sealing_block_last_request: Mutex::new(0),
 			sealing_work: Mutex::new(SealingWork{
@@ -323,10 +350,31 @@ impl Miner {
 		let mut invalid_transactions = HashSet::new();
 		let mut transactions_to_penalize = HashSet::new();
 		let block_number = open_block.block().fields().header.number();
-		// TODO: push new uncles, too.
+
+		// TODO Push new uncles too.
 		for tx in transactions {
 			let hash = tx.hash();
-			match open_block.push_transaction(tx, None) {
+			let start = Instant::now();
+			let result = open_block.push_transaction(tx, None);
+			let took = start.elapsed();
+
+			// Check for heavy transactions
+			match self.options.tx_queue_banning {
+				Banning::Enabled { ref offend_threshold, .. } if &took > offend_threshold => {
+					match self.transaction_queue.lock().ban_transaction(&hash) {
+						true => {
+							warn!(target: "miner", "Detected heavy transaction. Banning the sender and recipient/code.");
+						},
+						false => {
+							transactions_to_penalize.insert(hash);
+							debug!(target: "miner", "Detected heavy transaction. Penalizing sender.")
+						}
+					}
+				},
+				_ => {},
+			}
+
+			match result {
 				Err(Error::Execution(ExecutionError::BlockGasLimitReached { gas_limit, gas_used, gas })) => {
 					debug!(target: "miner", "Skipping adding transaction to block because of gas limit: {:?} (limit: {:?}, used: {:?}, gas: {:?})", hash, gas_limit, gas_used, gas);
 
@@ -367,7 +415,7 @@ impl Miner {
 
 		{
 			let mut queue = self.transaction_queue.lock();
-			for hash in invalid_transactions.into_iter() {
+			for hash in invalid_transactions {
 				queue.remove_invalid(&hash, &fetch_account);
 			}
 			for hash in transactions_to_penalize {
@@ -512,7 +560,7 @@ impl Miner {
 		prepare_new
 	}
 
-	fn add_transactions_to_queue(&self, chain: &MiningBlockChainClient, transactions: Vec<SignedTransaction>, origin: TransactionOrigin, transaction_queue: &mut TransactionQueue) ->
+	fn add_transactions_to_queue(&self, chain: &MiningBlockChainClient, transactions: Vec<SignedTransaction>, origin: TransactionOrigin, transaction_queue: &mut BanningTransactionQueue) ->
 		Vec<Result<TransactionImportResult, Error>> {
 
 		let fetch_account = |a: &Address| AccountDetails {
@@ -520,14 +568,25 @@ impl Miner {
 			balance: chain.latest_balance(a),
 		};
 
+		let schedule = chain.latest_schedule();
+		let gas_required = |tx: &SignedTransaction| tx.gas_required(&schedule).into();
 		transactions.into_iter()
-			.map(|tx| transaction_queue.add(tx, &fetch_account, origin))
+			.map(|tx| match origin {
+				TransactionOrigin::Local | TransactionOrigin::RetractedBlock => {
+					transaction_queue.add(tx, origin, &fetch_account, &gas_required)
+				},
+				TransactionOrigin::External => {
+					transaction_queue.add_with_banlist(tx, &fetch_account, &gas_required)
+				}
+			})
 			.collect()
 	}
 
 	/// Are we allowed to do a non-mandatory reseal?
 	fn tx_reseal_allowed(&self) -> bool { Instant::now() > *self.next_allowed_reseal.lock() }
 
+	#[cfg_attr(feature="dev", allow(wrong_self_convention))]
+	#[cfg_attr(feature="dev", allow(redundant_closure))]
 	fn from_pending_block<H, F, G>(&self, latest_block_number: BlockNumber, from_chain: F, map_block: G) -> H
 		where F: Fn() -> H, G: Fn(&ClosedBlock) -> H {
 		let sealing_work = self.sealing_work.lock();
@@ -891,7 +950,7 @@ impl MinerService for Miner {
 	fn pending_receipts(&self, best_block: BlockNumber) -> BTreeMap<H256, Receipt> {
 		self.from_pending_block(
 			best_block,
-			|| BTreeMap::new(),
+			BTreeMap::new,
 			|pending| {
 				let hashes = pending.transactions()
 					.iter()
@@ -1025,7 +1084,7 @@ impl MinerService for Miner {
 							tx.sender().expect("Transaction is in block, so sender has to be defined.")
 						})
 						.collect::<HashSet<Address>>();
-				for sender in to_remove.into_iter() {
+				for sender in to_remove {
 					transaction_queue.remove_all(sender, chain.latest_nonce(&sender));
 				}
 			});
@@ -1103,6 +1162,7 @@ mod tests {
 				pending_set: PendingSet::AlwaysSealing,
 				work_queue_size: 5,
 				enable_resubmission: true,
+				tx_queue_banning: Banning::Disabled,
 			},
 			GasPricer::new_fixed(0u64.into()),
 			&Spec::new_test(),

ethcore/src/miner/mod.rs

@@ -44,11 +44,12 @@
 mod miner;
 mod external;
 mod transaction_queue;
+mod banning_queue;
 mod work_notify;
 mod price_info;
 
 pub use self::transaction_queue::{TransactionQueue, PrioritizationStrategy, AccountDetails, TransactionOrigin};
-pub use self::miner::{Miner, MinerOptions, PendingSet, GasPricer, GasPriceCalibratorOptions, GasLimit};
+pub use self::miner::{Miner, MinerOptions, Banning, PendingSet, GasPricer, GasPriceCalibratorOptions, GasLimit};
 pub use self::external::{ExternalMiner, ExternalMinerService};
 pub use client::TransactionImportResult;
 

ethcore/src/miner/transaction_queue.rs

@@ -48,10 +48,11 @@
 //!			nonce: U256::from(10),
 //!			balance: U256::from(1_000_000),
 //!		};
+//!		let gas_estimator = |_tx: &SignedTransaction| 2.into();
 //!
 //!		let mut txq = TransactionQueue::default();
-//!		txq.add(st2.clone(), &default_account_details, TransactionOrigin::External).unwrap();
+//!		txq.add(st2.clone(), TransactionOrigin::External, &default_account_details, &gas_estimator).unwrap();
-//!		txq.add(st1.clone(), &default_account_details, TransactionOrigin::External).unwrap();
+//!		txq.add(st1.clone(), TransactionOrigin::External, &default_account_details, &gas_estimator).unwrap();
 //!
 //!		// Check status
 //!		assert_eq!(txq.status().pending, 2);
@@ -446,6 +447,7 @@ pub struct AccountDetails {
 const GAS_LIMIT_HYSTERESIS: usize = 10; // (100/GAS_LIMIT_HYSTERESIS) %
 
 /// Describes the strategy used to prioritize transactions in the queue.
+#[cfg_attr(feature="dev", allow(enum_variant_names))]
 #[derive(Debug, Copy, Clone, PartialEq, Eq)]
 pub enum PrioritizationStrategy {
 	/// Use only gas price. Disregards the actual computation cost of the transaction.
@@ -592,9 +594,20 @@ impl TransactionQueue {
 		}
 	}
 
-	/// Add signed transaction to queue to be verified and imported
+	/// Add signed transaction to queue to be verified and imported.
-	pub fn add<T>(&mut self, tx: SignedTransaction, fetch_account: &T, origin: TransactionOrigin) -> Result<TransactionImportResult, Error>
+	///
-	where T: Fn(&Address) -> AccountDetails {
+	/// NOTE fetch_account and gas_estimator should be cheap to compute
+	/// otherwise it might open up an attack vector.
+	pub fn add<F, G>(
+		&mut self,
+		tx: SignedTransaction,
+		origin: TransactionOrigin,
+		fetch_account: &F,
+		gas_estimator: &G,
+	) -> Result<TransactionImportResult, Error> where
+		F: Fn(&Address) -> AccountDetails,
+		G: Fn(&SignedTransaction) -> U256,
+	{
 
 		if tx.gas_price < self.minimal_gas_price && origin != TransactionOrigin::Local {
 			trace!(target: "txqueue",
@@ -625,8 +638,6 @@ impl TransactionQueue {
 			}));
 		}
 
-		try!(tx.check_low_s());
-
 		if tx.gas > self.gas_limit || tx.gas > self.tx_gas_limit {
 			trace!(target: "txqueue",
 				"Dropping transaction above gas limit: {:?} ({} > min({}, {}))",
@@ -642,6 +653,24 @@ impl TransactionQueue {
 			}));
 		}
 
+		let minimal_gas = gas_estimator(&tx);
+		if tx.gas < minimal_gas {
+			trace!(target: "txqueue",
+				"Dropping transaction with insufficient gas: {:?} ({} > {})",
+				tx.hash(),
+				tx.gas,
+				minimal_gas,
+			);
+
+			return Err(Error::Transaction(TransactionError::InsufficientGas {
+				minimal: minimal_gas,
+				got: tx.gas,
+			}));
+		}
+
+		// Verify signature
+		try!(tx.check_low_s());
+
 		let vtx = try!(VerifiedTransaction::new(tx, origin));
 		let client_account = fetch_account(&vtx.sender());
 
@@ -904,16 +933,6 @@ impl TransactionQueue {
 		let nonce = tx.nonce();
 		let hash = tx.hash();
 
-		{
-			// Rough size sanity check
-			let gas = &tx.transaction.gas;
-			if U256::from(tx.transaction.data.len()) > *gas {
-				// Droping transaction
-				trace!(target: "txqueue", "Dropping oversized transaction: {:?} (gas: {} < size {})", hash, gas, tx.transaction.data.len());
-				return Err(TransactionError::LimitReached);
-			}
-		}
-
 		// The transaction might be old, let's check that.
 		// This has to be the first test, otherwise calculating
 		// nonce height would result in overflow.
@@ -1103,6 +1122,10 @@ mod test {
 		}
 	}
 
+	fn gas_estimator(_tx: &SignedTransaction) -> U256 {
+		U256::zero()
+	}
+
 	fn new_tx_pair(nonce: U256, gas_price: U256, nonce_increment: U256, gas_price_increment: U256) -> (SignedTransaction, SignedTransaction) {
 		let tx1 = new_unsigned_tx(nonce, default_gas_val(), gas_price);
 		let tx2 = new_unsigned_tx(nonce + nonce_increment, default_gas_val(), gas_price + gas_price_increment);
@@ -1154,14 +1177,14 @@ mod test {
 		let (tx1, tx2) = new_tx_pair(123.into(), 1.into(), 1.into(), 0.into());
 		let sender = tx1.sender().unwrap();
 		let nonce = tx1.nonce;
-		txq.add(tx1.clone(), &default_account_details, TransactionOrigin::External).unwrap();
+		txq.add(tx1.clone(), TransactionOrigin::External, &default_account_details, &gas_estimator).unwrap();
-		txq.add(tx2.clone(), &default_account_details, TransactionOrigin::External).unwrap();
+		txq.add(tx2.clone(), TransactionOrigin::External, &default_account_details, &gas_estimator).unwrap();
 		assert_eq!(txq.status().pending, 2);
 		assert_eq!(txq.last_nonce(&sender), Some(nonce + 1.into()));
 
 		// when
 		let tx = new_tx(123.into(), 1.into());
-		let res = txq.add(tx.clone(), &default_account_details, TransactionOrigin::External);
+		let res = txq.add(tx.clone(), TransactionOrigin::External, &default_account_details, &gas_estimator);
 
 		// then
 		// No longer the case as we don't even consider a transaction that isn't above a full
@@ -1317,12 +1340,12 @@ mod test {
 			!U256::zero() };
 
 		// First insert one transaction to future
-		let res = txq.add(tx, &prev_nonce, TransactionOrigin::External);
+		let res = txq.add(tx, TransactionOrigin::External, &prev_nonce, &gas_estimator);
 		assert_eq!(res.unwrap(), TransactionImportResult::Future);
 		assert_eq!(txq.status().future, 1);
 
 		// now import second transaction to current
-		let res = txq.add(tx2.clone(), &default_account_details, TransactionOrigin::External);
+		let res = txq.add(tx2.clone(), TransactionOrigin::External, &default_account_details, &gas_estimator);
 
 		// and then there should be only one transaction in current (the one with higher gas_price)
 		assert_eq!(res.unwrap(), TransactionImportResult::Current);
@@ -1342,12 +1365,12 @@ mod test {
 			!U256::zero() };
 
 		// First insert one transaction to future
-		let res = txq.add(tx.clone(), &prev_nonce, TransactionOrigin::External);
+		let res = txq.add(tx.clone(), TransactionOrigin::External, &prev_nonce, &gas_estimator);
 		assert_eq!(res.unwrap(), TransactionImportResult::Future);
 		assert_eq!(txq.status().future, 1);
 
 		// now import second transaction to current
-		let res = txq.add(tx2.clone(), &default_account_details, TransactionOrigin::External);
+		let res = txq.add(tx2.clone(), TransactionOrigin::External, &default_account_details, &gas_estimator);
 
 		// then
 		assert_eq!(res.unwrap(), TransactionImportResult::Current);
@@ -1366,7 +1389,7 @@ mod test {
 		let tx = new_tx_default();
 
 		// when
-		let res = txq.add(tx, &default_account_details, TransactionOrigin::External);
+		let res = txq.add(tx, TransactionOrigin::External, &default_account_details, &gas_estimator);
 
 		// then
 		assert_eq!(res.unwrap(), TransactionImportResult::Current);
@@ -1385,10 +1408,10 @@ mod test {
 		txq.set_minimal_gas_price(15.into());
 
 		// when
-		let res1 = txq.add(tx1, &default_account_details, TransactionOrigin::External);
+		let res1 = txq.add(tx1, TransactionOrigin::External, &default_account_details, &gas_estimator);
-		let res2 = txq.add(tx2, &default_account_details, TransactionOrigin::External);
+		let res2 = txq.add(tx2, TransactionOrigin::External, &default_account_details, &gas_estimator);
-		let res3 = txq.add(tx3, &default_account_details, TransactionOrigin::External);
+		let res3 = txq.add(tx3, TransactionOrigin::External, &default_account_details, &gas_estimator);
-		let res4 = txq.add(tx4, &default_account_details, TransactionOrigin::External);
+		let res4 = txq.add(tx4, TransactionOrigin::External, &default_account_details, &gas_estimator);
 
 		// then
 		assert_eq!(res1.unwrap(), TransactionImportResult::Current);
@@ -1419,10 +1442,10 @@ mod test {
 		txq.set_minimal_gas_price(15.into());
 
 		// when
-		let res1 = txq.add(tx1, &default_account_details, TransactionOrigin::External);
+		let res1 = txq.add(tx1, TransactionOrigin::External, &default_account_details, &gas_estimator);
-		let res2 = txq.add(tx2, &default_account_details, TransactionOrigin::External);
+		let res2 = txq.add(tx2, TransactionOrigin::External, &default_account_details, &gas_estimator);
-		let res3 = txq.add(tx3, &default_account_details, TransactionOrigin::External);
+		let res3 = txq.add(tx3, TransactionOrigin::External, &default_account_details, &gas_estimator);
-		let res4 = txq.add(tx4, &default_account_details, TransactionOrigin::External);
+		let res4 = txq.add(tx4, TransactionOrigin::External, &default_account_details, &gas_estimator);
 
 		// then
 		assert_eq!(res1.unwrap(), TransactionImportResult::Current);
@@ -1465,7 +1488,7 @@ mod test {
 		txq.set_gas_limit(limit);
 
 		// when
-		let res = txq.add(tx, &default_account_details, TransactionOrigin::External);
+		let res = txq.add(tx, TransactionOrigin::External, &default_account_details, &gas_estimator);
 
 		// then
 		assert_eq!(unwrap_tx_err(res), TransactionError::GasLimitExceeded {
@@ -1489,7 +1512,7 @@ mod test {
 		};
 
 		// when
-		let res = txq.add(tx, &account, TransactionOrigin::External);
+		let res = txq.add(tx, TransactionOrigin::External, &account, &gas_estimator);
 
 		// then
 		assert_eq!(unwrap_tx_err(res), TransactionError::InsufficientBalance {
@@ -1509,7 +1532,7 @@ mod test {
 		txq.set_minimal_gas_price(tx.gas_price + U256::one());
 
 		// when
-		let res = txq.add(tx, &default_account_details, TransactionOrigin::External);
+		let res = txq.add(tx, TransactionOrigin::External, &default_account_details, &gas_estimator);
 
 		// then
 		assert_eq!(unwrap_tx_err(res), TransactionError::InsufficientGasPrice {
@@ -1529,7 +1552,7 @@ mod test {
 		txq.set_minimal_gas_price(tx.gas_price + U256::one());
 
 		// when
-		let res = txq.add(tx, &default_account_details, TransactionOrigin::Local);
+		let res = txq.add(tx, TransactionOrigin::Local, &default_account_details, &gas_estimator);
 
 		// then
 		assert_eq!(res.unwrap(), TransactionImportResult::Current);
@@ -1559,7 +1582,7 @@ mod test {
 			rlp::decode(s.as_raw())
 		};
 		// when
-		let res = txq.add(stx, &default_account_details, TransactionOrigin::External);
+		let res = txq.add(stx, TransactionOrigin::External, &default_account_details, &gas_estimator);
 
 		// then
 		assert!(res.is_err());
@@ -1573,8 +1596,8 @@ mod test {
 		let (tx, tx2) = new_tx_pair_default(1.into(), 0.into());
 
 		// when
-		txq.add(tx.clone(), &default_account_details, TransactionOrigin::External).unwrap();
+		txq.add(tx.clone(), TransactionOrigin::External, &default_account_details, &gas_estimator).unwrap();
-		txq.add(tx2.clone(), &default_account_details, TransactionOrigin::External).unwrap();
+		txq.add(tx2.clone(), TransactionOrigin::External, &default_account_details, &gas_estimator).unwrap();
 
 		// then
 		let top = txq.top_transactions();
@@ -1593,9 +1616,9 @@ mod test {
 
 		// when
 		// first insert the one with higher gas price
-		txq.add(tx2.clone(), &default_account_details, TransactionOrigin::External).unwrap();
+		txq.add(tx2.clone(), TransactionOrigin::External, &default_account_details, &gas_estimator).unwrap();
 		// then the one with lower gas price, but local
-		txq.add(tx.clone(), &default_account_details, TransactionOrigin::Local).unwrap();
+		txq.add(tx.clone(), TransactionOrigin::Local, &default_account_details, &gas_estimator).unwrap();
 
 		// then
 		let top = txq.top_transactions();
@@ -1614,9 +1637,9 @@ mod test {
 
 		// when
 		// first insert local one with higher gas price
-		txq.add(tx2.clone(), &default_account_details, TransactionOrigin::Local).unwrap();
+		txq.add(tx2.clone(), TransactionOrigin::Local, &default_account_details, &gas_estimator).unwrap();
 		// then the one with lower gas price, but from retracted block
-		txq.add(tx.clone(), &default_account_details, TransactionOrigin::RetractedBlock).unwrap();
+		txq.add(tx.clone(), TransactionOrigin::RetractedBlock, &default_account_details, &gas_estimator).unwrap();
 
 		// then
 		let top = txq.top_transactions();
@@ -1632,8 +1655,8 @@ mod test {
 		let (tx, tx2) = new_tx_pair_default(1.into(), 0.into());
 
 		// when
-		txq.add(tx.clone(), &default_account_details, TransactionOrigin::External).unwrap();
+		txq.add(tx.clone(), TransactionOrigin::External, &default_account_details, &gas_estimator).unwrap();
-		txq.add(tx2.clone(), &default_account_details, TransactionOrigin::Local).unwrap();
+		txq.add(tx2.clone(), TransactionOrigin::Local, &default_account_details, &gas_estimator).unwrap();
 
 		// then
 		let top = txq.top_transactions();
@@ -1652,10 +1675,10 @@ mod test {
 		let (tx1, tx2) = new_tx_pair_with_gas_price_increment(3.into());
 
 		// insert everything
-		txq.add(txa.clone(), &prev_nonce, TransactionOrigin::External).unwrap();
+		txq.add(txa.clone(), TransactionOrigin::External, &prev_nonce, &gas_estimator).unwrap();
-		txq.add(txb.clone(), &prev_nonce, TransactionOrigin::External).unwrap();
+		txq.add(txb.clone(), TransactionOrigin::External, &prev_nonce, &gas_estimator).unwrap();
-		txq.add(tx1.clone(), &prev_nonce, TransactionOrigin::External).unwrap();
+		txq.add(tx1.clone(), TransactionOrigin::External, &prev_nonce, &gas_estimator).unwrap();
-		txq.add(tx2.clone(), &prev_nonce, TransactionOrigin::External).unwrap();
+		txq.add(tx2.clone(), TransactionOrigin::External, &prev_nonce, &gas_estimator).unwrap();
 
 		assert_eq!(txq.status().future, 4);
 
@@ -1681,10 +1704,10 @@ mod test {
 		let (tx1, tx2) = new_tx_pair_with_gas_price_increment(3.into());
 
 		// insert everything
-		txq.add(txa.clone(), &default_account_details, TransactionOrigin::External).unwrap();
+		txq.add(txa.clone(), TransactionOrigin::External, &default_account_details, &gas_estimator).unwrap();
-		txq.add(txb.clone(), &default_account_details, TransactionOrigin::External).unwrap();
+		txq.add(txb.clone(), TransactionOrigin::External, &default_account_details, &gas_estimator).unwrap();
-		txq.add(tx1.clone(), &default_account_details, TransactionOrigin::External).unwrap();
+		txq.add(tx1.clone(), TransactionOrigin::External, &default_account_details, &gas_estimator).unwrap();
-		txq.add(tx2.clone(), &default_account_details, TransactionOrigin::External).unwrap();
+		txq.add(tx2.clone(), TransactionOrigin::External, &default_account_details, &gas_estimator).unwrap();
 
 		let top = txq.top_transactions();
 		assert_eq!(top[0], tx1);
@@ -1713,8 +1736,8 @@ mod test {
 		let (tx, tx2) = new_tx_pair_default(1.into(), 0.into());
 
 		// when
-		txq.add(tx.clone(), &default_account_details, TransactionOrigin::External).unwrap();
+		txq.add(tx.clone(), TransactionOrigin::External, &default_account_details, &gas_estimator).unwrap();
-		txq.add(tx2.clone(), &default_account_details, TransactionOrigin::External).unwrap();
+		txq.add(tx2.clone(), TransactionOrigin::External, &default_account_details, &gas_estimator).unwrap();
 
 		// then
 		let top = txq.pending_hashes();
@@ -1731,8 +1754,8 @@ mod test {
 		let (tx, tx2) = new_tx_pair_default(2.into(), 0.into());
 
 		// when
-		let res1 = txq.add(tx.clone(), &default_account_details, TransactionOrigin::External).unwrap();
+		let res1 = txq.add(tx.clone(), TransactionOrigin::External, &default_account_details, &gas_estimator).unwrap();
-		let res2 = txq.add(tx2.clone(), &default_account_details, TransactionOrigin::External).unwrap();
+		let res2 = txq.add(tx2.clone(), TransactionOrigin::External, &default_account_details, &gas_estimator).unwrap();
 
 		// then
 		assert_eq!(res1, TransactionImportResult::Current);
@@ -1755,8 +1778,8 @@ mod test {
 		let mut txq = TransactionQueue::default();
 
 		let (tx, tx2) = new_tx_pair_default(1.into(), 0.into());
-		txq.add(tx.clone(), &prev_nonce, TransactionOrigin::External).unwrap();
+		txq.add(tx.clone(), TransactionOrigin::External, &prev_nonce, &gas_estimator).unwrap();
-		txq.add(tx2.clone(), &prev_nonce, TransactionOrigin::External).unwrap();
+		txq.add(tx2.clone(), TransactionOrigin::External, &prev_nonce, &gas_estimator).unwrap();
 		assert_eq!(txq.status().future, 2);
 
 		// when
@@ -1778,13 +1801,13 @@ mod test {
 		let tx1 = new_unsigned_tx(124.into(), default_gas_val(), 1.into()).sign(secret);
 		let tx2 = new_unsigned_tx(125.into(), default_gas_val(), 1.into()).sign(secret);
 
-		txq.add(tx, &default_account_details, TransactionOrigin::External).unwrap();
+		txq.add(tx, TransactionOrigin::External, &default_account_details, &gas_estimator).unwrap();
 		assert_eq!(txq.status().pending, 1);
-		txq.add(tx2, &default_account_details, TransactionOrigin::External).unwrap();
+		txq.add(tx2, TransactionOrigin::External, &default_account_details, &gas_estimator).unwrap();
 		assert_eq!(txq.status().future, 1);
 
 		// when
-		txq.add(tx1, &default_account_details, TransactionOrigin::External).unwrap();
+		txq.add(tx1, TransactionOrigin::External, &default_account_details, &gas_estimator).unwrap();
 
 		// then
 		let stats = txq.status();
@@ -1800,8 +1823,8 @@ mod test {
 		// given
 		let mut txq2 = TransactionQueue::default();
 		let (tx, tx2) = new_tx_pair_default(3.into(), 0.into());
-		txq2.add(tx.clone(), &default_account_details, TransactionOrigin::External).unwrap();
+		txq2.add(tx.clone(), TransactionOrigin::External, &default_account_details, &gas_estimator).unwrap();
-		txq2.add(tx2.clone(), &default_account_details, TransactionOrigin::External).unwrap();
+		txq2.add(tx2.clone(), TransactionOrigin::External, &default_account_details, &gas_estimator).unwrap();
 		assert_eq!(txq2.status().pending, 1);
 		assert_eq!(txq2.status().future, 1);
 
@@ -1822,10 +1845,10 @@ mod test {
 		let mut txq = TransactionQueue::default();
 		let (tx, tx2) = new_tx_pair_default(1.into(), 0.into());
 		let tx3 = new_tx_default();
-		txq.add(tx2.clone(), &default_account_details, TransactionOrigin::External).unwrap();
+		txq.add(tx2.clone(), TransactionOrigin::External, &default_account_details, &gas_estimator).unwrap();
 		assert_eq!(txq.status().future, 1);
-		txq.add(tx3.clone(), &default_account_details, TransactionOrigin::External).unwrap();
+		txq.add(tx3.clone(), TransactionOrigin::External, &default_account_details, &gas_estimator).unwrap();
-		txq.add(tx.clone(), &default_account_details, TransactionOrigin::External).unwrap();
+		txq.add(tx.clone(), TransactionOrigin::External, &default_account_details, &gas_estimator).unwrap();
 		assert_eq!(txq.status().pending, 3);
 
 		// when
@@ -1844,8 +1867,8 @@ mod test {
 		let (tx, tx2) = new_tx_pair_default(1.into(), 0.into());
 
 		// add
-		txq.add(tx2.clone(), &default_account_details, TransactionOrigin::External).unwrap();
+		txq.add(tx2.clone(), TransactionOrigin::External, &default_account_details, &gas_estimator).unwrap();
-		txq.add(tx.clone(), &default_account_details, TransactionOrigin::External).unwrap();
+		txq.add(tx.clone(), TransactionOrigin::External, &default_account_details, &gas_estimator).unwrap();
 		let stats = txq.status();
 		assert_eq!(stats.pending, 2);
 
@@ -1864,11 +1887,11 @@ mod test {
 		let (tx, tx2) = new_tx_pair_default(1.into(), 0.into());
 		let sender = tx.sender().unwrap();
 		let nonce = tx.nonce;
-		txq.add(tx.clone(), &default_account_details, TransactionOrigin::External).unwrap();
+		txq.add(tx.clone(), TransactionOrigin::External, &default_account_details, &gas_estimator).unwrap();
 		assert_eq!(txq.status().pending, 1);
 
 		// when
-		let res = txq.add(tx2.clone(), &default_account_details, TransactionOrigin::External);
+		let res = txq.add(tx2.clone(), TransactionOrigin::External, &default_account_details, &gas_estimator);
 
 		// then
 		let t = txq.top_transactions();
@@ -1885,14 +1908,14 @@ mod test {
 		txq.current.set_limit(10);
 		let (tx1, tx2) = new_tx_pair_default(4.into(), 1.into());
 		let (tx3, tx4) = new_tx_pair_default(4.into(), 2.into());
-		txq.add(tx1.clone(), &default_account_details, TransactionOrigin::External).unwrap();
+		txq.add(tx1.clone(), TransactionOrigin::External, &default_account_details, &gas_estimator).unwrap();
-		txq.add(tx3.clone(), &default_account_details, TransactionOrigin::External).unwrap();
+		txq.add(tx3.clone(), TransactionOrigin::External, &default_account_details, &gas_estimator).unwrap();
 		assert_eq!(txq.status().pending, 2);
 
 		// when
-		txq.add(tx2.clone(), &default_account_details, TransactionOrigin::External).unwrap();
+		txq.add(tx2.clone(), TransactionOrigin::External, &default_account_details, &gas_estimator).unwrap();
 		assert_eq!(txq.status().future, 1);
-		txq.add(tx4.clone(), &default_account_details, TransactionOrigin::External).unwrap();
+		txq.add(tx4.clone(), TransactionOrigin::External, &default_account_details, &gas_estimator).unwrap();
 
 		// then
 		assert_eq!(txq.status().future, 1);
@@ -1903,11 +1926,11 @@ mod test {
 		let mut txq = TransactionQueue::with_limits(PrioritizationStrategy::GasPriceOnly, 100, default_gas_val() * U256::from(2), !U256::zero());
 		let (tx1, tx2) = new_tx_pair_default(U256::from(1), U256::from(1));
 		let (tx3, tx4) = new_tx_pair_default(U256::from(1), U256::from(2));
-		txq.add(tx1.clone(), &default_account_details, TransactionOrigin::External).unwrap();
+		txq.add(tx1.clone(), TransactionOrigin::External, &default_account_details, &gas_estimator).unwrap();
-		txq.add(tx2.clone(), &default_account_details, TransactionOrigin::External).unwrap();
+		txq.add(tx2.clone(), TransactionOrigin::External, &default_account_details, &gas_estimator).unwrap();
-		txq.add(tx3.clone(), &default_account_details, TransactionOrigin::External).unwrap();
+		txq.add(tx3.clone(), TransactionOrigin::External, &default_account_details, &gas_estimator).unwrap();
 		// limited by gas
-		txq.add(tx4.clone(), &default_account_details, TransactionOrigin::External).unwrap_err();
+		txq.add(tx4.clone(), TransactionOrigin::External, &default_account_details, &gas_estimator).unwrap_err();
 		assert_eq!(txq.status().pending, 2);
 	}
 
@@ -1917,13 +1940,13 @@ mod test {
 		let (tx1, tx2) = new_tx_pair_default(U256::from(1), U256::from(1));
 		let (tx3, tx4) = new_tx_pair_default(U256::from(1), U256::from(2));
 		let (tx5, tx6) = new_tx_pair_default(U256::from(1), U256::from(2));
-		txq.add(tx1.clone(), &default_account_details, TransactionOrigin::Local).unwrap();
+		txq.add(tx1.clone(), TransactionOrigin::Local, &default_account_details, &gas_estimator).unwrap();
-		txq.add(tx2.clone(), &default_account_details, TransactionOrigin::Local).unwrap();
+		txq.add(tx2.clone(), TransactionOrigin::Local, &default_account_details, &gas_estimator).unwrap();
-		txq.add(tx5.clone(), &default_account_details, TransactionOrigin::External).unwrap();
+		txq.add(tx5.clone(), TransactionOrigin::External, &default_account_details, &gas_estimator).unwrap();
 		// Not accepted because of limit
-		txq.add(tx6.clone(), &default_account_details, TransactionOrigin::External).unwrap_err();
+		txq.add(tx6.clone(), TransactionOrigin::External, &default_account_details, &gas_estimator).unwrap_err();
-		txq.add(tx3.clone(), &default_account_details, TransactionOrigin::Local).unwrap();
+		txq.add(tx3.clone(), TransactionOrigin::Local, &default_account_details, &gas_estimator).unwrap();
-		txq.add(tx4.clone(), &default_account_details, TransactionOrigin::Local).unwrap();
+		txq.add(tx4.clone(), TransactionOrigin::Local, &default_account_details, &gas_estimator).unwrap();
 		assert_eq!(txq.status().pending, 4);
 	}
 
@@ -1935,7 +1958,7 @@ mod test {
 		let fetch_last_nonce = |_a: &Address| AccountDetails { nonce: last_nonce, balance: !U256::zero() };
 
 		// when
-		let res = txq.add(tx, &fetch_last_nonce, TransactionOrigin::External);
+		let res = txq.add(tx, TransactionOrigin::External, &fetch_last_nonce, &gas_estimator);
 
 		// then
 		assert_eq!(unwrap_tx_err(res), TransactionError::Old);
@@ -1951,12 +1974,12 @@ mod test {
 			balance: !U256::zero() };
 		let mut txq = TransactionQueue::default();
 		let (_tx1, tx2) = new_tx_pair_default(1.into(), 0.into());
-		txq.add(tx2.clone(), &default_account_details, TransactionOrigin::External).unwrap();
+		txq.add(tx2.clone(), TransactionOrigin::External, &default_account_details, &gas_estimator).unwrap();
 		assert_eq!(txq.status().future, 1);
 		assert_eq!(txq.status().pending, 0);
 
 		// when
-		let res = txq.add(tx2.clone(), &nonce, TransactionOrigin::External);
+		let res = txq.add(tx2.clone(), TransactionOrigin::External, &nonce, &gas_estimator);
 
 		// then
 		assert_eq!(unwrap_tx_err(res), TransactionError::AlreadyImported);
@@ -1970,15 +1993,15 @@ mod test {
 		// given
 		let mut txq = TransactionQueue::default();
 		let (tx1, tx2) = new_tx_pair_default(1.into(), 0.into());
-		txq.add(tx1.clone(), &default_account_details, TransactionOrigin::External).unwrap();
+		txq.add(tx1.clone(), TransactionOrigin::External, &default_account_details, &gas_estimator).unwrap();
-		txq.add(tx2.clone(), &default_account_details, TransactionOrigin::External).unwrap();
+		txq.add(tx2.clone(), TransactionOrigin::External, &default_account_details, &gas_estimator).unwrap();
 		assert_eq!(txq.status().pending, 2);
 
 		// when
 		txq.remove_invalid(&tx1.hash(), &default_account_details);
 		assert_eq!(txq.status().pending, 0);
 		assert_eq!(txq.status().future, 1);
-		txq.add(tx1.clone(), &default_account_details, TransactionOrigin::External).unwrap();
+		txq.add(tx1.clone(), TransactionOrigin::External, &default_account_details, &gas_estimator).unwrap();
 
 		// then
 		let stats = txq.status();
@@ -1992,10 +2015,10 @@ mod test {
 		let mut txq = TransactionQueue::default();
 		let (tx, tx2) = new_tx_pair_default(1.into(), 0.into());
 		let tx3 = new_tx_default();
-		txq.add(tx2.clone(), &default_account_details, TransactionOrigin::External).unwrap();
+		txq.add(tx2.clone(), TransactionOrigin::External, &default_account_details, &gas_estimator).unwrap();
 		assert_eq!(txq.status().future, 1);
-		txq.add(tx3.clone(), &default_account_details, TransactionOrigin::External).unwrap();
+		txq.add(tx3.clone(), TransactionOrigin::External, &default_account_details, &gas_estimator).unwrap();
-		txq.add(tx.clone(), &default_account_details, TransactionOrigin::External).unwrap();
+		txq.add(tx.clone(), TransactionOrigin::External, &default_account_details, &gas_estimator).unwrap();
 		assert_eq!(txq.status().pending, 3);
 
 		// when
@@ -2022,8 +2045,8 @@ mod test {
 		};
 
 		// when
-		txq.add(tx, &default_account_details, TransactionOrigin::External).unwrap();
+		txq.add(tx, TransactionOrigin::External, &default_account_details, &gas_estimator).unwrap();
-		txq.add(tx2, &default_account_details, TransactionOrigin::External).unwrap();
+		txq.add(tx2, TransactionOrigin::External, &default_account_details, &gas_estimator).unwrap();
 
 		// then
 		let stats = txq.status();
@@ -2050,10 +2073,10 @@ mod test {
 		};
 
 		// when
-		txq.add(tx1, &default_account_details, TransactionOrigin::External).unwrap();
+		txq.add(tx1, TransactionOrigin::External, &default_account_details, &gas_estimator).unwrap();
-		txq.add(tx2, &default_account_details, TransactionOrigin::External).unwrap();
+		txq.add(tx2, TransactionOrigin::External, &default_account_details, &gas_estimator).unwrap();
 		assert_eq!(txq.status().future, 1);
-		txq.add(tx0, &default_account_details, TransactionOrigin::External).unwrap();
+		txq.add(tx0, TransactionOrigin::External, &default_account_details, &gas_estimator).unwrap();
 
 		// then
 		let stats = txq.status();
@@ -2071,8 +2094,8 @@ mod test {
 			!U256::zero() };
 		let mut txq = TransactionQueue::default();
 		let (tx1, tx2) = new_tx_pair_default(1.into(), 0.into());
-		txq.add(tx1.clone(), &previous_nonce, TransactionOrigin::External).unwrap();
+		txq.add(tx1.clone(), TransactionOrigin::External, &previous_nonce, &gas_estimator).unwrap();
-		txq.add(tx2, &previous_nonce, TransactionOrigin::External).unwrap();
+		txq.add(tx2, TransactionOrigin::External, &previous_nonce, &gas_estimator).unwrap();
 		assert_eq!(txq.status().future, 2);
 
 		// when
@@ -2103,7 +2126,7 @@ mod test {
 		let details = |_a: &Address| AccountDetails { nonce: nonce, balance: !U256::zero() };
 
 		// when
-		txq.add(tx, &details, TransactionOrigin::External).unwrap();
+		txq.add(tx, TransactionOrigin::External, &details, &gas_estimator).unwrap();
 
 		// then
 		assert_eq!(txq.last_nonce(&from), Some(nonce));
@@ -2118,7 +2141,7 @@ mod test {
 		let details1 = |_a: &Address| AccountDetails { nonce: nonce1, balance: !U256::zero() };
 
 		// Insert first transaction
-		txq.add(tx1, &details1, TransactionOrigin::External).unwrap();
+		txq.add(tx1, TransactionOrigin::External, &details1, &gas_estimator).unwrap();
 
 		// when
 		txq.remove_all(tx2.sender().unwrap(), nonce2 + U256::one());
@@ -2138,9 +2161,9 @@ mod test {
 
 		// when
 		// Insert first transaction
-		assert_eq!(txq.add(tx1, &details1, TransactionOrigin::External).unwrap(), TransactionImportResult::Current);
+		assert_eq!(txq.add(tx1, TransactionOrigin::External, &details1, &gas_estimator).unwrap(), TransactionImportResult::Current);
 		// Second should go to future
-		assert_eq!(txq.add(tx2, &details1, TransactionOrigin::External).unwrap(), TransactionImportResult::Future);
+		assert_eq!(txq.add(tx2, TransactionOrigin::External, &details1, &gas_estimator).unwrap(), TransactionImportResult::Future);
 		// Now block is imported
 		txq.remove_all(sender, nonce2 - U256::from(1));
 		// tx2 should be not be promoted to current
@@ -2159,9 +2182,9 @@ mod test {
 		assert_eq!(txq.has_local_pending_transactions(), false);
 
 		// when
-		assert_eq!(txq.add(tx1, &default_account_details, TransactionOrigin::External).unwrap(), TransactionImportResult::Current);
+		assert_eq!(txq.add(tx1, TransactionOrigin::External, &default_account_details, &gas_estimator).unwrap(), TransactionImportResult::Current);
 		assert_eq!(txq.has_local_pending_transactions(), false);
-		assert_eq!(txq.add(tx2, &default_account_details, TransactionOrigin::Local).unwrap(), TransactionImportResult::Current);
+		assert_eq!(txq.add(tx2, TransactionOrigin::Local, &default_account_details, &gas_estimator).unwrap(), TransactionImportResult::Current);
 
 		// then
 		assert_eq!(txq.has_local_pending_transactions(), true);
@@ -2176,8 +2199,8 @@ mod test {
 			default_account_details(a).balance };
 
 		// when
-		assert_eq!(txq.add(tx2, &prev_nonce, TransactionOrigin::External).unwrap(), TransactionImportResult::Future);
+		assert_eq!(txq.add(tx2, TransactionOrigin::External, &prev_nonce, &gas_estimator).unwrap(), TransactionImportResult::Future);
-		assert_eq!(txq.add(tx1.clone(), &prev_nonce, TransactionOrigin::External).unwrap(), TransactionImportResult::Future);
+		assert_eq!(txq.add(tx1.clone(), TransactionOrigin::External, &prev_nonce, &gas_estimator).unwrap(), TransactionImportResult::Future);
 
 		// then
 		assert_eq!(txq.future.by_priority.len(), 1);
@@ -2202,14 +2225,14 @@ mod test {
 			(tx.sign(secret), tx2.sign(secret), tx2_2.sign(secret), tx3.sign(secret))
 		};
 		let sender = tx1.sender().unwrap();
-		txq.add(tx1, &default_account_details, TransactionOrigin::Local).unwrap();
+		txq.add(tx1, TransactionOrigin::Local, &default_account_details, &gas_estimator).unwrap();
-		txq.add(tx2, &default_account_details, TransactionOrigin::Local).unwrap();
+		txq.add(tx2, TransactionOrigin::Local, &default_account_details, &gas_estimator).unwrap();
-		txq.add(tx3, &default_account_details, TransactionOrigin::Local).unwrap();
+		txq.add(tx3, TransactionOrigin::Local, &default_account_details, &gas_estimator).unwrap();
 		assert_eq!(txq.future.by_priority.len(), 0);
 		assert_eq!(txq.current.by_priority.len(), 3);
 
 		// when
-		let res = txq.add(tx2_2, &default_account_details, TransactionOrigin::Local);
+		let res = txq.add(tx2_2, TransactionOrigin::Local, &default_account_details, &gas_estimator);
 
 		// then
 		assert_eq!(txq.last_nonce(&sender).unwrap(), 125.into());
@@ -2217,4 +2240,24 @@ mod test {
 		assert_eq!(txq.current.by_priority.len(), 3);
 	}
 
+	#[test]
+	fn should_reject_transactions_below_bas_gas() {
+		// given
+		let mut txq = TransactionQueue::default();
+		let (tx1, tx2) = new_tx_pair_default(1.into(), 0.into());
+		let high_gas = |_: &SignedTransaction| 100_001.into();
+
+		// when
+		let res1 = txq.add(tx1, TransactionOrigin::Local, &default_account_details, &gas_estimator);
+		let res2 = txq.add(tx2, TransactionOrigin::Local, &default_account_details, &high_gas);
+
+		// then
+		assert_eq!(res1.unwrap(), TransactionImportResult::Current);
+		assert_eq!(unwrap_tx_err(res2), TransactionError::InsufficientGas {
+			minimal: 100_001.into(),
+			got: 100_000.into(),
+		});
+
+	}
+
 }

ethcore/src/service.rs

@@ -89,7 +89,7 @@ impl ClientService {
 			db_config.set_cache(::db::COL_STATE, size);
 		}
 
-		db_config.compaction = config.db_compaction.compaction_profile(&client_path);
+		db_config.compaction = config.db_compaction.compaction_profile(client_path);
 		db_config.wal = config.db_wal;
 
 		let pruning = config.pruning;

ethcore/src/snapshot/error.rs

@@ -33,6 +33,12 @@ pub enum Error {
 	BlockNotFound(H256),
 	/// Incomplete chain.
 	IncompleteChain,
+	/// Best block has wrong state root.
+	WrongStateRoot(H256, H256),
+	/// Wrong block hash.
+	WrongBlockHash(u64, H256, H256),
+	/// Too many blocks contained within the snapshot.
+	TooManyBlocks(u64, u64),
 	/// Old starting block in a pruned database.
 	OldBlockPrunedDB,
 	/// Missing code.
@@ -52,7 +58,11 @@ impl fmt::Display for Error {
 		match *self {
 			Error::InvalidStartingBlock(ref id) => write!(f, "Invalid starting block: {:?}", id),
 			Error::BlockNotFound(ref hash) => write!(f, "Block not found in chain: {}", hash),
-			Error::IncompleteChain => write!(f, "Cannot create snapshot due to incomplete chain."),
+			Error::IncompleteChain => write!(f, "Incomplete blockchain."),
+			Error::WrongStateRoot(ref expected, ref found) => write!(f, "Final block has wrong state root. Expected {:?}, got {:?}", expected, found),
+			Error::WrongBlockHash(ref num, ref expected, ref found) =>
+				write!(f, "Block {} had wrong hash. expected {:?}, got {:?}", num, expected, found),
+			Error::TooManyBlocks(ref expected, ref found) => write!(f, "Snapshot contained too many blocks. Expected {}, got {}", expected, found),
 			Error::OldBlockPrunedDB => write!(f, "Attempted to create a snapshot at an old block while using \
 				a pruned database. Please re-run with the --pruning archive flag."),
 			Error::MissingCode(ref missing) => write!(f, "Incomplete snapshot: {} contract codes not found.", missing.len()),

ethcore/src/snapshot/mod.rs

@@ -26,6 +26,7 @@ use std::sync::atomic::{AtomicBool, AtomicUsize, Ordering};
 use account_db::{AccountDB, AccountDBMut};
 use blockchain::{BlockChain, BlockProvider};
 use engines::Engine;
+use header::Header;
 use ids::BlockID;
 use views::BlockView;
 
@@ -202,7 +203,7 @@ impl<'a> BlockChunker<'a> {
 
 			// cut off the chunk if too large.
 
-			if new_loaded_size > PREFERRED_CHUNK_SIZE && self.rlps.len() > 0 {
+			if new_loaded_size > PREFERRED_CHUNK_SIZE && !self.rlps.is_empty() {
 				try!(self.write_chunk(last));
 				loaded_size = pair.len();
 			} else {
@@ -528,6 +529,20 @@ fn rebuild_accounts(
 /// Proportion of blocks which we will verify `PoW` for.
 const POW_VERIFY_RATE: f32 = 0.02;
 
+/// Verify an old block with the given header, engine, blockchain, body. If `always` is set, it will perform
+/// the fullest verification possible. If not, it will take a random sample to determine whether it will
+/// do heavy or light verification.
+pub fn verify_old_block(rng: &mut OsRng, header: &Header, engine: &Engine, chain: &BlockChain, body: Option<&[u8]>, always: bool) -> Result<(), ::error::Error> {
+	if always || rng.gen::<f32>() <= POW_VERIFY_RATE {
+		match chain.block_header(header.parent_hash()) {
+			Some(parent) => engine.verify_block_family(&header, &parent, body),
+			None => engine.verify_block_seal(&header),
+		}
+	} else {
+		engine.verify_block_basic(&header, body)
+	}
+}
+
 /// Rebuilds the blockchain from chunks.
 ///
 /// Does basic verification for all blocks, but `PoW` verification for some.
@@ -543,17 +558,23 @@ pub struct BlockRebuilder {
 	rng: OsRng,
 	disconnected: Vec<(u64, H256)>,
 	best_number: u64,
+	best_hash: H256,
+	best_root: H256,
+	fed_blocks: u64,
 }
 
 impl BlockRebuilder {
 	/// Create a new BlockRebuilder.
-	pub fn new(chain: BlockChain, db: Arc<Database>, best_number: u64) -> Result<Self, ::error::Error> {
+	pub fn new(chain: BlockChain, db: Arc<Database>, manifest: &ManifestData) -> Result<Self, ::error::Error> {
 		Ok(BlockRebuilder {
 			chain: chain,
 			db: db,
 			rng: try!(OsRng::new()),
 			disconnected: Vec::new(),
-			best_number: best_number,
+			best_number: manifest.block_number,
+			best_hash: manifest.block_hash,
+			best_root: manifest.state_root,
+			fed_blocks: 0,
 		})
 	}
 
@@ -566,9 +587,14 @@ impl BlockRebuilder {
 
 		let rlp = UntrustedRlp::new(chunk);
 		let item_count = rlp.item_count();
+		let num_blocks = (item_count - 3) as u64;
 
 		trace!(target: "snapshot", "restoring block chunk with {} blocks.", item_count - 3);
 
+		if self.fed_blocks + num_blocks > SNAPSHOT_BLOCKS {
+			return Err(Error::TooManyBlocks(SNAPSHOT_BLOCKS, self.fed_blocks).into())
+		}
+
 		// todo: assert here that these values are consistent with chunks being in order.
 		let mut cur_number = try!(rlp.val_at::<u64>(0)) + 1;
 		let mut parent_hash = try!(rlp.val_at::<H256>(1));
@@ -585,14 +611,27 @@ impl BlockRebuilder {
 
 			let block = try!(abridged_block.to_block(parent_hash, cur_number, receipts_root));
 			let block_bytes = block.rlp_bytes(With);
+			let is_best = cur_number == self.best_number;
 
-			if self.rng.gen::<f32>() <= POW_VERIFY_RATE {
+			if is_best {
-				try!(engine.verify_block_seal(&block.header))
+				if block.header.hash() != self.best_hash {
-			} else {
+					return Err(Error::WrongBlockHash(cur_number, self.best_hash, block.header.hash()).into())
-				try!(engine.verify_block_basic(&block.header, Some(&block_bytes)));
+				}
+
+				if block.header.state_root() != &self.best_root {
+					return Err(Error::WrongStateRoot(self.best_root, *block.header.state_root()).into())
+				}
 			}
 
-			let is_best = cur_number == self.best_number;
+			try!(verify_old_block(
+				&mut self.rng,
+				&block.header,
+				engine,
+				&self.chain,
+				Some(&block_bytes),
+				is_best
+			));
+
 			let mut batch = self.db.transaction();
 
 			// special-case the first block in each chunk.
@@ -610,11 +649,15 @@ impl BlockRebuilder {
 			cur_number += 1;
 		}
 
-		Ok(item_count as u64 - 3)
+		self.fed_blocks += num_blocks;
+
+		Ok(num_blocks)
 	}
 
-	/// Glue together any disconnected chunks. To be called at the end.
+	/// Glue together any disconnected chunks and check that the chain is complete.
-	pub fn glue_chunks(self) {
+	pub fn finalize(self, canonical: HashMap<u64, H256>) -> Result<(), Error> {
+		let mut batch = self.db.transaction();
+
 		for (first_num, first_hash) in self.disconnected {
 			let parent_num = first_num - 1;
 
@@ -623,8 +666,23 @@ impl BlockRebuilder {
 			// the first block of the first chunks has nothing to connect to.
 			if let Some(parent_hash) = self.chain.block_hash(parent_num) {
 				// if so, add the child to it.
-				self.chain.add_child(parent_hash, first_hash);
+				self.chain.add_child(&mut batch, parent_hash, first_hash);
 			}
 		}
+		self.db.write_buffered(batch);
+
+		let best_number = self.best_number;
+		for num in (0..self.fed_blocks).map(|x| best_number - x) {
+
+			let hash = try!(self.chain.block_hash(num).ok_or(Error::IncompleteChain));
+
+			if let Some(canon_hash) = canonical.get(&num).cloned() {
+				if canon_hash != hash {
+					return Err(Error::WrongBlockHash(num, canon_hash, hash));
+				}
+			}
+		}
+
+		Ok(())
 	}
 }

ethcore/src/snapshot/service.rs

@@ -16,7 +16,7 @@
 
 //! Snapshot network service implementation.
 
-use std::collections::HashSet;
+use std::collections::{HashMap, HashSet};
 use std::io::ErrorKind;
 use std::fs;
 use std::path::PathBuf;
@@ -74,6 +74,7 @@ struct Restoration {
 	snappy_buffer: Bytes,
 	final_state_root: H256,
 	guard: Guard,
+	canonical_hashes: HashMap<u64, H256>,
 	db: Arc<Database>,
 }
 
@@ -99,7 +100,7 @@ impl Restoration {
 			.map_err(UtilError::SimpleString)));
 
 		let chain = BlockChain::new(Default::default(), params.genesis, raw_db.clone());
-		let blocks = try!(BlockRebuilder::new(chain, raw_db.clone(), manifest.block_number));
+		let blocks = try!(BlockRebuilder::new(chain, raw_db.clone(), &manifest));
 
 		let root = manifest.state_root.clone();
 		Ok(Restoration {
@@ -112,6 +113,7 @@ impl Restoration {
 			snappy_buffer: Vec::new(),
 			final_state_root: root,
 			guard: params.guard,
+			canonical_hashes: HashMap::new(),
 			db: raw_db,
 		})
 	}
@@ -138,13 +140,18 @@ impl Restoration {
 
 			try!(self.blocks.feed(&self.snappy_buffer[..len], engine));
 			if let Some(ref mut writer) = self.writer.as_mut() {
-				try!(writer.write_block_chunk(hash, chunk));
+				 try!(writer.write_block_chunk(hash, chunk));
 			}
 		}
 
 		Ok(())
 	}
 
+	// note canonical hashes.
+	fn note_canonical(&mut self, hashes: &[(u64, H256)]) {
+		self.canonical_hashes.extend(hashes.iter().cloned());
+	}
+
 	// finish up restoration.
 	fn finalize(self) -> Result<(), Error> {
 		use util::trie::TrieError;
@@ -161,8 +168,8 @@ impl Restoration {
 		// check for missing code.
 		try!(self.state.check_missing());
 
-		// connect out-of-order chunks.
+		// connect out-of-order chunks and verify chain integrity.
-		self.blocks.glue_chunks();
+		try!(self.blocks.finalize(self.canonical_hashes));
 
 		if let Some(writer) = self.writer {
 			try!(writer.finish(self.manifest));
@@ -352,7 +359,8 @@ impl Service {
 				// "Cancelled" is mincing words a bit -- what really happened
 				// is that the state we were snapshotting got pruned out
 				// before we could finish.
-				info!("Cancelled prematurely-started periodic snapshot.");
+				info!("Periodic snapshot failed: block state pruned.\
+					Run with a longer `--pruning-history` or with `--no-periodic-snapshot`");
 				return Ok(())
 			} else {
 				return Err(e);
@@ -580,6 +588,14 @@ impl SnapshotService for Service {
 			trace!("Error sending snapshot service message: {:?}", e);
 		}
 	}
+
+	fn provide_canon_hashes(&self, canonical: &[(u64, H256)]) {
+		let mut rest = self.restoration.lock();
+
+		if let Some(ref mut rest) = rest.as_mut() {
+			rest.note_canonical(canonical);
+		}
+	}
 }
 
 impl Drop for Service {

ethcore/src/snapshot/snapshot_service_trait.rs

@@ -48,6 +48,10 @@ pub trait SnapshotService : Sync + Send {
 	/// Feed a raw block chunk to the service to be processed asynchronously.
 	/// no-op if currently restoring.
 	fn restore_block_chunk(&self, hash: H256, chunk: Bytes);
+
+	/// Give the restoration in-progress some canonical block hashes for
+	/// extra verification (performed at the end)
+	fn provide_canon_hashes(&self, canonical: &[(u64, H256)]);
 }
 
 impl IpcConfig for SnapshotService { }

ethcore/src/snapshot/tests/blocks.rs

@@ -26,6 +26,7 @@ use snapshot::io::{PackedReader, PackedWriter, SnapshotReader, SnapshotWriter};
 use util::{Mutex, snappy};
 use util::kvdb::{Database, DatabaseConfig};
 
+use std::collections::HashMap;
 use std::sync::Arc;
 
 fn chunk_and_restore(amount: u64) {
@@ -58,18 +59,20 @@ fn chunk_and_restore(amount: u64) {
 	// snapshot it.
 	let writer = Mutex::new(PackedWriter::new(&snapshot_path).unwrap());
 	let block_hashes = chunk_blocks(&bc, best_hash, &writer, &Progress::default()).unwrap();
-	writer.into_inner().finish(::snapshot::ManifestData {
+	let manifest = ::snapshot::ManifestData {
 		state_hashes: Vec::new(),
 		block_hashes: block_hashes,
-		state_root: Default::default(),
+		state_root: ::util::sha3::SHA3_NULL_RLP,
 		block_number: amount,
 		block_hash: best_hash,
-	}).unwrap();
+	};
+
+	writer.into_inner().finish(manifest.clone()).unwrap();
 
 	// restore it.
 	let new_db = Arc::new(Database::open(&db_cfg, new_path.as_str()).unwrap());
 	let new_chain = BlockChain::new(Default::default(), &genesis, new_db.clone());
-	let mut rebuilder = BlockRebuilder::new(new_chain, new_db.clone(), amount).unwrap();
+	let mut rebuilder = BlockRebuilder::new(new_chain, new_db.clone(), &manifest).unwrap();
 	let reader = PackedReader::new(&snapshot_path).unwrap().unwrap();
 	let engine = ::engines::NullEngine::new(Default::default(), Default::default());
 	for chunk_hash in &reader.manifest().block_hashes {
@@ -78,7 +81,7 @@ fn chunk_and_restore(amount: u64) {
 		rebuilder.feed(&chunk, &engine).unwrap();
 	}
 
-	rebuilder.glue_chunks();
+	rebuilder.finalize(HashMap::new()).unwrap();
 
 	// and test it.
 	let new_chain = BlockChain::new(Default::default(), &genesis, new_db);

ethcore/src/state/account.rs

@@ -247,23 +247,34 @@ impl Account {
 	}
 
 	/// Provide a database to get `code_hash`. Should not be called if it is a contract without code.
-	pub fn cache_code(&mut self, db: &HashDB) -> bool {
+	pub fn cache_code(&mut self, db: &HashDB) -> Option<Arc<Bytes>> {
 		// TODO: fill out self.code_cache;
 		trace!("Account::cache_code: ic={}; self.code_hash={:?}, self.code_cache={}", self.is_cached(), self.code_hash, self.code_cache.pretty());
-		self.is_cached() ||
+
+		if self.is_cached() { return Some(self.code_cache.clone()) }
+
 		match db.get(&self.code_hash) {
 			Some(x) => {
 				self.code_size = Some(x.len());
 				self.code_cache = Arc::new(x.to_vec());
-				true
+				Some(self.code_cache.clone())
 			},
 			_ => {
 				warn!("Failed reverse get of {}", self.code_hash);
-				false
+				None
 			},
 		}
 	}
 
+	/// Provide code to cache. For correctness, should be the correct code for the
+	/// account.
+	pub fn cache_given_code(&mut self, code: Arc<Bytes>) {
+		trace!("Account::cache_given_code: ic={}; self.code_hash={:?}, self.code_cache={}", self.is_cached(), self.code_hash, self.code_cache.pretty());
+
+		self.code_size = Some(code.len());
+		self.code_cache = code;
+	}
+
 	/// Provide a database to get `code_size`. Should not be called if it is a contract without code.
 	pub fn cache_code_size(&mut self, db: &HashDB) -> bool {
 		// TODO: fill out self.code_cache;
@@ -413,7 +424,7 @@ impl Account {
 		self.code_size = other.code_size;
 		self.address_hash = other.address_hash;
 		let mut cache = self.storage_cache.borrow_mut();
-		for (k, v) in other.storage_cache.into_inner().into_iter() {
+		for (k, v) in other.storage_cache.into_inner() {
 			cache.insert(k.clone() , v.clone()); //TODO: cloning should not be required here
 		}
 		self.storage_changes = other.storage_changes;
@@ -476,7 +487,7 @@ mod tests {
 		};
 
 		let mut a = Account::from_rlp(&rlp);
-		assert!(a.cache_code(&db.immutable()));
+		assert!(a.cache_code(&db.immutable()).is_some());
 
 		let mut a = Account::from_rlp(&rlp);
 		assert_eq!(a.note_code(vec![0x55, 0x44, 0xffu8]), Ok(()));

ethcore/src/state/mod.rs

@@ -127,11 +127,10 @@ impl AccountEntry {
 	fn overwrite_with(&mut self, other: AccountEntry) {
 		self.state = other.state;
 		match other.account {
-			Some(acc) => match self.account {
+			Some(acc) => {
-				Some(ref mut ours) => {
+				if let Some(ref mut ours) = self.account {
 					ours.overwrite_with(acc);
-				},
+				}
-				None => {},
 			},
 			None => self.account = None,
 		}
@@ -281,13 +280,10 @@ impl State {
 						}
 					},
 					None => {
-						match self.cache.get_mut().entry(k) {
+						if let Entry::Occupied(e) = self.cache.get_mut().entry(k) {
-							Entry::Occupied(e) => {
+							if e.get().is_dirty() {
-								if e.get().is_dirty() {
+								e.remove();
-									e.remove();
+							}
-								}
-							},
-							_ => {}
 						}
 					}
 				}
@@ -501,6 +497,7 @@ impl State {
 	/// Commit accounts to SecTrieDBMut. This is similar to cpp-ethereum's dev::eth::commit.
 	/// `accounts` is mutable because we may need to commit the code or storage and record that.
 	#[cfg_attr(feature="dev", allow(match_ref_pats))]
+	#[cfg_attr(feature="dev", allow(needless_borrow))]
 	fn commit_into(
 		factories: &Factories,
 		db: &mut StateDB,
@@ -509,17 +506,14 @@ impl State {
 	) -> Result<(), Error> {
 		// first, commit the sub trees.
 		for (address, ref mut a) in accounts.iter_mut().filter(|&(_, ref a)| a.is_dirty()) {
-			match a.account {
+			if let Some(ref mut account) = a.account {
-				Some(ref mut account) => {
+				if !account.is_empty() {
-					if !account.is_empty() {
+					db.note_account_bloom(address);
-						db.note_account_bloom(&address);
-					}
-					let addr_hash = account.address_hash(address);
-					let mut account_db = factories.accountdb.create(db.as_hashdb_mut(), addr_hash);
-					account.commit_storage(&factories.trie, account_db.as_hashdb_mut());
-					account.commit_code(account_db.as_hashdb_mut());
 				}
-				_ => {}
+				let addr_hash = account.address_hash(address);
+				let mut account_db = factories.accountdb.create(db.as_hashdb_mut(), addr_hash);
+				account.commit_storage(&factories.trie, account_db.as_hashdb_mut());
+				account.commit_code(account_db.as_hashdb_mut());
 			}
 		}
 
@@ -586,7 +580,7 @@ impl State {
 
 	fn query_pod(&mut self, query: &PodState) {
 		for (address, pod_account) in query.get().into_iter()
-			.filter(|&(ref a, _)| self.ensure_cached(a, RequireCache::Code, true, |a| a.is_some()))
+			.filter(|&(a, _)| self.ensure_cached(a, RequireCache::Code, true, |a| a.is_some()))
 		{
 			// needs to be split into two parts for the refcell code here
 			// to work.
@@ -605,14 +599,30 @@ impl State {
 		pod_state::diff_pod(&state_pre.to_pod(), &pod_state_post)
 	}
 
-	fn update_account_cache(require: RequireCache, account: &mut Account, db: &HashDB) {
+	// load required account data from the databases.
-		match require {
+	fn update_account_cache(require: RequireCache, account: &mut Account, state_db: &StateDB, db: &HashDB) {
-			RequireCache::None => {},
+		match (account.is_cached(), require) {
-			RequireCache::Code => {
+			(true, _) | (false, RequireCache::None) => {}
-				account.cache_code(db);
+			(false, require) => {
-			}
+				// if there's already code in the global cache, always cache it
-			RequireCache::CodeSize => {
+				// locally.
-				account.cache_code_size(db);
+				let hash = account.code_hash();
+				match state_db.get_cached_code(&hash) {
+					Some(code) => account.cache_given_code(code),
+					None => match require {
+						RequireCache::None => {},
+						RequireCache::Code => {
+							if let Some(code) = account.cache_code(db) {
+								// propagate code loaded from the database to
+								// the global code cache.
+								state_db.cache_code(hash, code)
+							}
+						}
+						RequireCache::CodeSize => {
+							account.cache_code_size(db);
+						}
+					}
+				}
 			}
 		}
 	}
@@ -626,7 +636,7 @@ impl State {
 		if let Some(ref mut maybe_acc) = self.cache.borrow_mut().get_mut(a) {
 			if let Some(ref mut account) = maybe_acc.account {
 				let accountdb = self.factories.accountdb.readonly(self.db.as_hashdb(), account.address_hash(a));
-				Self::update_account_cache(require, account, accountdb.as_hashdb());
+				Self::update_account_cache(require, account, &self.db, accountdb.as_hashdb());
 				return f(Some(account));
 			}
 			return f(None);
@@ -635,7 +645,7 @@ impl State {
 		let result = self.db.get_cached(a, |mut acc| {
 			if let Some(ref mut account) = acc {
 				let accountdb = self.factories.accountdb.readonly(self.db.as_hashdb(), account.address_hash(a));
-				Self::update_account_cache(require, account, accountdb.as_hashdb());
+				Self::update_account_cache(require, account, &self.db, accountdb.as_hashdb());
 			}
 			f(acc.map(|a| &*a))
 		});
@@ -653,7 +663,7 @@ impl State {
 				};
 				if let Some(ref mut account) = maybe_acc.as_mut() {
 					let accountdb = self.factories.accountdb.readonly(self.db.as_hashdb(), account.address_hash(a));
-					Self::update_account_cache(require, account, accountdb.as_hashdb());
+					Self::update_account_cache(require, account, &self.db, accountdb.as_hashdb());
 				}
 				let r = f(maybe_acc.as_ref());
 				self.insert_cache(a, AccountEntry::new_clean(maybe_acc));
@@ -679,14 +689,12 @@ impl State {
 				None => {
 					let maybe_acc = if self.db.check_account_bloom(a) {
 						let db = self.factories.trie.readonly(self.db.as_hashdb(), &self.root).expect(SEC_TRIE_DB_UNWRAP_STR);
-						let maybe_acc = match db.get(a) {
+						match db.get(a) {
 							Ok(Some(acc)) => AccountEntry::new_clean(Some(Account::from_rlp(&acc))),
 							Ok(None) => AccountEntry::new_clean(None),
 							Err(e) => panic!("Potential DB corruption encountered: {}", e),
-						};
+						}
-						maybe_acc
+					} else {
-					}
-					else {
 						AccountEntry::new_clean(None)
 					};
 					self.insert_cache(a, maybe_acc);
@@ -711,7 +719,7 @@ impl State {
 					if require_code {
 						let addr_hash = account.address_hash(a);
 						let accountdb = self.factories.accountdb.readonly(self.db.as_hashdb(), addr_hash);
-						account.cache_code(accountdb.as_hashdb());
+						Self::update_account_cache(RequireCache::Code, account, &self.db, accountdb.as_hashdb());
 					}
 					account
 				},

ethcore/src/state_db.rs

@@ -16,6 +16,7 @@
 
 use std::collections::{VecDeque, HashSet};
 use lru_cache::LruCache;
+use util::cache::MemoryLruCache;
 use util::journaldb::JournalDB;
 use util::hash::{H256};
 use util::hashdb::HashDB;
@@ -33,12 +34,17 @@ pub const ACCOUNT_BLOOM_HASHCOUNT_KEY: &'static [u8] = b"account_hash_count";
 
 const STATE_CACHE_BLOCKS: usize = 12;
 
+// The percentage of supplied cache size to go to accounts.
+const ACCOUNT_CACHE_RATIO: usize = 90;
+
 /// Shared canonical state cache.
 struct AccountCache {
 	/// DB Account cache. `None` indicates that account is known to be missing.
 	// When changing the type of the values here, be sure to update `mem_used` and
 	// `new`.
 	accounts: LruCache<Address, Option<Account>>,
+	/// DB Code cache. Maps code hashes to shared bytes.
+	code: MemoryLruCache<H256, Arc<Vec<u8>>>,
 	/// Information on the modifications in recently committed blocks; specifically which addresses
 	/// changed in which block. Ordered by block number.
 	modifications: VecDeque<BlockChanges>,
@@ -111,12 +117,15 @@ impl StateDB {
 	// into the `AccountCache` structure as its own `LruCache<(Address, H256), H256>`.
 	pub fn new(db: Box<JournalDB>, cache_size: usize) -> StateDB {
 		let bloom = Self::load_bloom(db.backing());
-		let cache_items = cache_size / ::std::mem::size_of::<Option<Account>>();
+		let acc_cache_size = cache_size * ACCOUNT_CACHE_RATIO / 100;
+		let code_cache_size = cache_size - acc_cache_size;
+		let cache_items = acc_cache_size / ::std::mem::size_of::<Option<Account>>();
 
 		StateDB {
 			db: db,
 			account_cache: Arc::new(Mutex::new(AccountCache {
 				accounts: LruCache::new(cache_items),
+				code: MemoryLruCache::new(code_cache_size),
 				modifications: VecDeque::new(),
 			})),
 			local_cache: Vec::new(),
@@ -170,7 +179,7 @@ impl StateDB {
 
 	pub fn commit_bloom(batch: &mut DBTransaction, journal: BloomJournal) -> Result<(), UtilError> {
 		assert!(journal.hash_functions <= 255);
-		batch.put(COL_ACCOUNT_BLOOM, ACCOUNT_BLOOM_HASHCOUNT_KEY, &vec![journal.hash_functions as u8]);
+		batch.put(COL_ACCOUNT_BLOOM, ACCOUNT_BLOOM_HASHCOUNT_KEY, &[journal.hash_functions as u8]);
 		let mut key = [0u8; 8];
 		let mut val = [0u8; 8];
 
@@ -216,7 +225,7 @@ impl StateDB {
 		let mut clear = false;
 		for block in enacted.iter().filter(|h| self.commit_hash.as_ref().map_or(true, |p| *h != p)) {
 			clear = clear || {
-				if let Some(ref mut m) = cache.modifications.iter_mut().find(|ref m| &m.hash == block) {
+				if let Some(ref mut m) = cache.modifications.iter_mut().find(|m| &m.hash == block) {
 					trace!("Reverting enacted block {:?}", block);
 					m.is_canon = true;
 					for a in &m.accounts {
@@ -232,7 +241,7 @@ impl StateDB {
 
 		for block in retracted {
 			clear = clear || {
-				if let Some(ref mut m) = cache.modifications.iter_mut().find(|ref m| &m.hash == block) {
+				if let Some(ref mut m) = cache.modifications.iter_mut().find(|m| &m.hash == block) {
 					trace!("Retracting block {:?}", block);
 					m.is_canon = false;
 					for a in &m.accounts {
@@ -286,7 +295,7 @@ impl StateDB {
 				is_canon: is_best,
 				parent: parent.clone(),
 			};
-			let insert_at = cache.modifications.iter().enumerate().find(|&(_, ref m)| m.number < *number).map(|(i, _)| i);
+			let insert_at = cache.modifications.iter().enumerate().find(|&(_, m)| m.number < *number).map(|(i, _)| i);
 			trace!("inserting modifications at {:?}", insert_at);
 			if let Some(insert_at) = insert_at {
 				cache.modifications.insert(insert_at, block_changes);
@@ -342,7 +351,12 @@ impl StateDB {
 	/// Heap size used.
 	pub fn mem_used(&self) -> usize {
 		// TODO: account for LRU-cache overhead; this is a close approximation.
-		self.db.mem_used() + self.account_cache.lock().accounts.len() * ::std::mem::size_of::<Option<Account>>()
+		self.db.mem_used() + {
+			let cache = self.account_cache.lock();
+
+			cache.code.current_size() +
+				cache.accounts.len() * ::std::mem::size_of::<Option<Account>>()
+		}
 	}
 
 	/// Returns underlying `JournalDB`.
@@ -362,6 +376,15 @@ impl StateDB {
 		})
 	}
 
+	/// Add a global code cache entry. This doesn't need to worry about canonicality because
+	/// it simply maps hashes to raw code and will always be correct in the absence of
+	/// hash collisions.
+	pub fn cache_code(&self, hash: H256, code: Arc<Vec<u8>>) {
+		let mut cache = self.account_cache.lock();
+
+		cache.code.insert(hash, code);
+	}
+
 	/// Get basic copy of the cached account. Does not include storage.
 	/// Returns 'None' if cache is disabled or if the account is not cached.
 	pub fn get_cached_account(&self, addr: &Address) -> Option<Option<Account>> {
@@ -369,7 +392,14 @@ impl StateDB {
 		if !Self::is_allowed(addr, &self.parent_hash, &cache.modifications) {
 			return None;
 		}
-		cache.accounts.get_mut(&addr).map(|a| a.as_ref().map(|a| a.clone_basic()))
+		cache.accounts.get_mut(addr).map(|a| a.as_ref().map(|a| a.clone_basic()))
+	}
+
+	/// Get cached code based on hash.
+	pub fn get_cached_code(&self, hash: &H256) -> Option<Arc<Vec<u8>>> {
+		let mut cache = self.account_cache.lock();
+
+		cache.code.get_mut(hash).map(|code| code.clone())
 	}
 
 	/// Get value from a cached account.
@@ -406,8 +436,7 @@ impl StateDB {
 		// We search for our parent in that list first and then for
 		// all its parent until we hit the canonical block,
 		// checking against all the intermediate modifications.
-		let mut iter = modifications.iter();
+		for m in modifications {
-		while let Some(ref m) = iter.next() {
 			if &m.hash == parent {
 				if m.is_canon {
 					return true;
@@ -420,7 +449,7 @@ impl StateDB {
 			}
 		}
 		trace!("Cache lookup skipped for {:?}: parent hash is unknown", addr);
-		return false;
+		false
 	}
 }
 

ethcore/src/tests/helpers.rs

@@ -389,7 +389,7 @@ pub fn get_good_dummy_block_fork_seq(start_number: usize, count: usize, parent_h
 	r
 }
 
-pub fn get_good_dummy_block() -> Bytes {
+pub fn get_good_dummy_block_hash() -> (H256, Bytes) {
 	let mut block_header = Header::new();
 	let test_spec = get_test_spec();
 	let test_engine = &test_spec.engine;
@@ -400,7 +400,12 @@ pub fn get_good_dummy_block() -> Bytes {
 	block_header.set_parent_hash(test_spec.genesis_header().hash());
 	block_header.set_state_root(test_spec.genesis_header().state_root().clone());
 
-	create_test_block(&block_header)
+	(block_header.hash(), create_test_block(&block_header))
+}
+
+pub fn get_good_dummy_block() -> Bytes {
+	let (_, bytes) = get_good_dummy_block_hash();
+	bytes
 }
 
 pub fn get_bad_state_dummy_block() -> Bytes {

ethcore/src/trace/db.rs

@@ -285,7 +285,7 @@ impl<T> TraceDatabase for TraceDB<T> where T: DatabaseExtras {
 			let mut blooms = self.blooms.write();
 			batch.extend_with_cache(db::COL_TRACE, &mut *blooms, blooms_to_insert, CacheUpdatePolicy::Remove);
 			// note_used must be called after locking blooms to avoid cache/traces deadlock on garbage collection
-			for key in blooms_keys.into_iter() {
+			for key in blooms_keys {
 				self.note_used(CacheID::Bloom(key));
 			}
 		}

ethcore/src/trace/executive_tracer.rs

@@ -50,7 +50,7 @@ fn prefix_subtrace_addresses(mut traces: Vec<FlatTrace>) -> Vec<FlatTrace> {
 	// [1, 0]
 	let mut current_subtrace_index = 0;
 	let mut first = true;
-	for trace in traces.iter_mut() {
+	for trace in &mut traces {
 		match (first, trace.trace_address.is_empty()) {
 			(true, _) => first = false,
 			(_, true) => current_subtrace_index += 1,

evmbin/Cargo.lock

@@ -155,7 +155,7 @@ name = "ethash"
 version = "1.4.0"
 dependencies = [
  "log 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "parking_lot 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "parking_lot 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "primal 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "sha3 0.1.0",
 ]
@@ -208,6 +208,9 @@ dependencies = [
 [[package]]
 name = "ethcore-bloom-journal"
 version = "0.1.0"
+dependencies = [
+ "siphasher 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
+]
 
 [[package]]
 name = "ethcore-devtools"
@@ -223,7 +226,7 @@ dependencies = [
  "crossbeam 0.2.10 (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 (git+https://github.com/ethcore/mio?branch=v0.5.x)",
- "parking_lot 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "parking_lot 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "slab 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -275,8 +278,9 @@ dependencies = [
  "lazy_static 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.17 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "parking_lot 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "parking_lot 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)",
+ "regex 0.1.77 (registry+https://github.com/rust-lang/crates.io-index)",
  "rlp 0.1.0",
  "rocksdb 0.4.5 (git+https://github.com/ethcore/rust-rocksdb)",
  "rust-crypto 0.2.36 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -334,6 +338,7 @@ dependencies = [
  "itertools 0.4.19 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.17 (registry+https://github.com/rust-lang/crates.io-index)",
+ "parking_lot 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)",
  "rust-crypto 0.2.36 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc-serialize 0.3.19 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -632,13 +637,28 @@ name = "odds"
 version = "0.2.23"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
+name = "owning_ref"
+version = "0.2.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
 name = "parking_lot"
-version = "0.2.8"
+version = "0.3.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "owning_ref 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "parking_lot_core 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "parking_lot_core"
+version = "0.2.0"
 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)",
  "libc 0.2.17 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rand 0.3.14 (registry+https://github.com/rust-lang/crates.io-index)",
  "smallvec 0.1.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -867,6 +887,11 @@ dependencies = [
  "gcc 0.3.37 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "siphasher"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
 name = "slab"
 version = "0.1.3"
@@ -1179,7 +1204,9 @@ dependencies = [
 "checksum num-traits 0.1.36 (registry+https://github.com/rust-lang/crates.io-index)" = "a16a42856a256b39c6d3484f097f6713e14feacd9bfb02290917904fae46c81c"
 "checksum num_cpus 0.2.13 (registry+https://github.com/rust-lang/crates.io-index)" = "cee7e88156f3f9e19bdd598f8d6c9db7bf4078f99f8381f43a55b09648d1a6e3"
 "checksum odds 0.2.23 (registry+https://github.com/rust-lang/crates.io-index)" = "e04630a62b3f1cc8c58b4d8f2555a40136f02b420e158242936ef286a72d33a0"
-"checksum parking_lot 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)" = "968f685642555d2f7e202c48b8b11de80569e9bfea817f7f12d7c61aac62d4e6"
+"checksum owning_ref 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "8d91377085359426407a287ab16884a0111ba473aa6844ff01d4ec20ce3d75e7"
+"checksum parking_lot 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)" = "e1435e7a2a00dfebededd6c6bdbd54008001e94b4a2aadd6aef0dc4c56317621"
+"checksum parking_lot_core 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "fb1b97670a2ffadce7c397fb80a3d687c4f3060140b885621ef1653d0e5d5068"
 "checksum primal 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)" = "0e31b86efadeaeb1235452171a66689682783149a6249ff334a2c5d8218d00a4"
 "checksum primal-bit 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)" = "464a91febc06166783d4f5ba3577b5ed8dda8e421012df80bfe48a971ed7be8f"
 "checksum primal-check 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "647c81b67bb9551a7b88d0bcd785ac35b7d0bf4b2f358683d7c2375d04daec51"
@@ -1205,6 +1232,7 @@ dependencies = [
 "checksum serde_codegen 0.8.13 (registry+https://github.com/rust-lang/crates.io-index)" = "e575e583f7d162e163af117fb9791fbd2bd203c31023b3219617e12c5997a738"
 "checksum serde_codegen_internals 0.10.0 (registry+https://github.com/rust-lang/crates.io-index)" = "318f7e77aa5187391d74aaf4553d2189f56b0ce25e963414c951b97877ffdcec"
 "checksum serde_json 0.8.3 (registry+https://github.com/rust-lang/crates.io-index)" = "1cb6b19e74d9f65b9d03343730b643d729a446b29376785cd65efdff4675e2fc"
+"checksum siphasher 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "5c44e42fa187b5a8782489cf7740cc27c3125806be2bf33563cf5e02e9533fcd"
 "checksum slab 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)" = "d807fd58c4181bbabed77cb3b891ba9748241a552bcc5be698faaebefc54f46e"
 "checksum slab 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "6dbdd334bd28d328dad1c41b0ea662517883d8880d8533895ef96c8003dec9c4"
 "checksum smallvec 0.1.8 (registry+https://github.com/rust-lang/crates.io-index)" = "fcc8d19212aacecf95e4a7a2179b26f7aeb9732a915cf01f05b0d3e044865410"

evmbin/src/ext.rs

@@ -31,7 +31,7 @@ pub struct FakeExt {
 impl Default for FakeExt {
 	fn default() -> Self {
 		FakeExt {
-			schedule: Schedule::new_homestead(),
+			schedule: Schedule::new_homestead_gas_fix(),
 			store: HashMap::new(),
 			depth: 1,
 		}

js/scripts/release.sh

@@ -23,28 +23,37 @@ rm -rf ./.git
 git init
 
 # add local files and send it up
+echo "Setting up GitHub config for js-precompiled"
 setup_git_user
+
+echo "Checking out $CI_BUILD_REF_NAME branch"
 git remote add origin https://${GITHUB_JS_PRECOMPILED}:@github.com/ethcore/js-precompiled.git
 git fetch origin 2>$GITLOG
 git checkout -b $CI_BUILD_REF_NAME
+
+echo "Committing compiled files for $UTCDATE"
 git add .
-git commit -m "$UTCDATE [compiled]"
+git commit -m "$UTCDATE"
+
+echo "Merging remote"
 git merge origin/$CI_BUILD_REF_NAME -X ours --commit -m "$UTCDATE [release]"
 git push origin HEAD:refs/heads/$CI_BUILD_REF_NAME 2>$GITLOG
+PRECOMPILED_HASH=`git rev-parse HEAD`
 
 # back to root
 popd
 
-# inti git with right origin
+echo "Setting up GitHub config for parity"
 setup_git_user
 git remote set-url origin https://${GITHUB_JS_PRECOMPILED}:@github.com/ethcore/parity.git
-
-# at this point we have a detached head on GitLab, reset
 git reset --hard origin/$CI_BUILD_REF_NAME 2>$GITLOG
 
-# bump js-precompiled, add, commit & push
+echo "Updating cargo package parity-ui-precompiled#$PRECOMPILED_HASH"
 cargo update -p parity-ui-precompiled
-git add . || true
+# --precise "$PRECOMPILED_HASH"
+
+echo "Committing updated files"
+git add .
 git commit -m "[ci skip] js-precompiled $UTCDATE"
 git push origin HEAD:refs/heads/$CI_BUILD_REF_NAME 2>$GITLOG
 

js/src/api/rpc/personal/personal.js

@@ -14,7 +14,7 @@
 // You should have received a copy of the GNU General Public License
 // along with Parity.  If not, see <http://www.gnu.org/licenses/>.
 
-import { inAddress, inNumber10, inNumber16, inOptions } from '../../format/input';
+import { inAddress, inHex, inNumber10, inNumber16, inOptions } from '../../format/input';
 import { outAccountInfo, outAddress, outSignerRequest } from '../../format/output';
 
 export default class Personal {
@@ -73,6 +73,12 @@ export default class Personal {
       .then(outAddress);
   }
 
+  newAccountFromSecret (secret, password) {
+    return this._transport
+      .execute('personal_newAccountFromSecret', inHex(secret), password)
+      .then(outAddress);
+  }
+
   newAccountFromWallet (json, password) {
     return this._transport
       .execute('personal_newAccountFromWallet', json, password)

js/src/dapps/basiccoin/Application/application.js

@@ -16,7 +16,7 @@
 
 import React, { Component, PropTypes } from 'react';
 
-// import { api } from '../parity';
+import { api } from '../parity';
 import { attachInstances } from '../services';
 
 import Header from './Header';
@@ -83,7 +83,7 @@ export default class Application extends Component {
     Promise
       .all([
         attachInstances(),
-        null // api.personal.accountsInfo()
+        api.personal.accountsInfo()
       ])
       .then(([{ managerInstance, registryInstance, tokenregInstance }, accountsInfo]) => {
         accountsInfo = accountsInfo || {};

js/src/dapps/gavcoin/Accounts/accounts.css

@@ -22,7 +22,7 @@
 
 .account {
   margin: 0.5em !important;
-  background: rgb(50, 100, 150) !important;
+  background: #430 !important;
   display: inline-block !important;
 }
 

js/src/dapps/gavcoin/Actions/ActionBuyIn/actionBuyIn.js

@@ -73,6 +73,7 @@ export default class ActionBuyIn extends Component {
     if (complete) {
       return (
         <FlatButton
+          className={ styles.dlgbtn }
           label='Done'
           primary
           onTouchTap={ this.props.onClose } />
@@ -84,10 +85,12 @@ export default class ActionBuyIn extends Component {
 
     return ([
       <FlatButton
+        className={ styles.dlgbtn }
         label='Cancel'
         primary
         onTouchTap={ this.props.onClose } />,
       <FlatButton
+        className={ styles.dlgbtn }
         label='Buy'
         primary
         disabled={ hasError || sending }

js/src/dapps/gavcoin/Actions/ActionRefund/actionRefund.js

@@ -72,6 +72,7 @@ export default class ActionRefund extends Component {
     if (this.state.complete) {
       return (
         <FlatButton
+          className={ styles.dlgbtn }
           label='Done'
           primary
           onTouchTap={ this.props.onClose } />
@@ -82,10 +83,12 @@ export default class ActionRefund extends Component {
 
     return ([
       <FlatButton
+        className={ styles.dlgbtn }
         label='Cancel'
         primary
         onTouchTap={ this.props.onClose } />,
       <FlatButton
+        className={ styles.dlgbtn }
         label='Refund'
         primary
         disabled={ hasError || this.state.sending }

js/src/dapps/gavcoin/Actions/ActionTransfer/actionTransfer.js

@@ -75,6 +75,7 @@ export default class ActionTransfer extends Component {
     if (complete) {
       return (
         <FlatButton
+          className={ styles.dlgbtn }
           label='Done'
           primary
           onTouchTap={ this.props.onClose } />
@@ -85,10 +86,12 @@ export default class ActionTransfer extends Component {
 
     return ([
       <FlatButton
+        className={ styles.dlgbtn }
         label='Cancel'
         primary
         onTouchTap={ this.props.onClose } />,
       <FlatButton
+        className={ styles.dlgbtn }
         label='Transfer'
         primary
         disabled={ hasError || sending }

js/src/dapps/gavcoin/Actions/actions.css

@@ -16,7 +16,7 @@
 */
 .actions {
   text-align: center;
-  padding: 2em 2em 0 2em;
+  padding: 2em 0 0 0;
   width: 100%;
 }
 
@@ -25,20 +25,31 @@
 }
 
 .button button {
-  background-color: rgba(50, 100, 150, 1) !important;
+  background-color: #430 !important;
   height: 56px !important;
   padding: 0 10px !important;
 }
 
 .button button[disabled] {
-  background-color: rgba(50, 50, 50, 0.25) !important;
+  opacity: 0.25;
+}
+
+.dlgbtn {
+}
+
+.dlgbtn span {
+  color: #430 !important;
+}
+
+.dlgbtn[disabled] {
+  opacity: 0.25;
 }
 
 .dialog {
 }
 
 .dialog h3 {
-  color: rgba(50, 100, 150, 1) !important;
+  color: #430 !important;
   text-transform: uppercase;
 }
 

js/src/dapps/gavcoin/Application/application.css

@@ -0,0 +1,21 @@
+/* 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/>.
+*/
+
+.body {
+  background-size: cover;
+  background-repeat: no-repeat;
+}

js/src/dapps/gavcoin/Application/application.js

@@ -32,6 +32,13 @@ import Events from '../Events';
 import Loading from '../Loading';
 import Status from '../Status';
 
+import styles from './application.css';
+import bgimage from '../../../../assets/images/dapps/gavcoin-bg.jpg';
+
+const bgstyle = {
+  backgroundImage: `url(${bgimage})`
+};
+
 const DIVISOR = 10 ** 6;
 
 export default class Application extends Component {
@@ -70,7 +77,7 @@ export default class Application extends Component {
     }
 
     return (
-      <div>
+      <div className={ styles.body } style={ bgstyle }>
         { this.renderModals() }
         <Status
           address={ address }
@@ -206,7 +213,7 @@ export default class Application extends Component {
           .all([
             registry.getAddress.call({}, [api.util.sha3('gavcoin'), 'A']),
             api.eth.accounts(),
-            null // api.personal.accountsInfo()
+            api.personal.accountsInfo()
           ]);
       })
       .then(([address, addresses, infos]) => {

js/src/dapps/gavcoin/Events/events.css

@@ -90,5 +90,5 @@
 }
 
 .newtranch {
-  background: rgba(50, 250, 50, 0.1);
+  background: rgba(255, 175, 0, 0.125); /*rgba(68, 51, 0, 0.15);*/
 }

js/src/dapps/gavcoin/Status/status.css

@@ -15,8 +15,8 @@
 /* along with Parity.  If not, see <http://www.gnu.org/licenses/>.
 */
 .status {
-  background: rgba(25, 75, 125, 1);
+  background: rgba(255, 175, 0, 0.25);
-  color: rgba(255, 255, 255, 1);
+  color: #430;
   padding: 4em 0 2em 0;
   display: flex;
   flex-wrap: wrap;
@@ -38,14 +38,16 @@
 
 .byline {
   font-size: 1.25em;
-  color: rgba(255, 255, 255, 0.7);
+  color: #430;
+  opacity: 0.75;
 }
 
 .heading {
   text-transform: uppercase;
   letter-spacing: 0.25em;
   font-size: 1.5em;
-  color: rgba(255, 255, 255, 0.7);
+  color: #430;
+  opacity: 0.75;
 }
 
 .hero {

js/src/dapps/githubhint/services.js

@@ -29,7 +29,7 @@ export function attachInterface () {
         .all([
           registry.getAddress.call({}, [api.util.sha3('githubhint'), 'A']),
           api.eth.accounts(),
-          null // api.personal.accountsInfo()
+          api.personal.accountsInfo()
         ]);
     })
     .then(([address, addresses, accountsInfo]) => {

js/src/dapps/registry/addresses/actions.js

@@ -22,12 +22,16 @@ export const fetch = () => (dispatch) => {
   return Promise
     .all([
       api.eth.accounts(),
-      null // api.personal.accountsInfo()
+      api.personal.accountsInfo()
     ])
     .then(([ accounts, data ]) => {
-      const addresses = accounts.map((address) => {
+      data = data || {};
-        return { address, isAccount: true };
+      const addresses = Object.keys(data)
-      });
+        .filter((address) => data[address] && !data[address].meta.deleted)
+        .map((address) => ({
+          ...data[address], address,
+          isAccount: accounts.includes(address)
+        }));
       dispatch(set(addresses));
     })
     .catch((error) => {

js/src/dapps/signaturereg/services.js

@@ -50,7 +50,7 @@ export function attachInterface (callback) {
         .all([
           registry.getAddress.call({}, [api.util.sha3('signaturereg'), 'A']),
           api.eth.accounts(),
-          null // api.personal.accountsInfo()
+          api.personal.accountsInfo()
         ]);
     })
     .then(([address, addresses, accountsInfo]) => {

js/src/dapps/tokenreg/Accounts/actions.js

@@ -38,7 +38,7 @@ export const loadAccounts = () => (dispatch) => {
   Promise
     .all([
       api.eth.accounts(),
-      null // api.personal.accountsInfo()
+      api.personal.accountsInfo()
     ])
     .then(([ accounts, accountsInfo ]) => {
       accountsInfo = accountsInfo || {};

js/src/jsonrpc/interfaces/personal.js

@@ -141,7 +141,7 @@ export default {
   },
 
   newAccountFromPhrase: {
-    desc: 'Creates a new account from a brainwallet passphrase',
+    desc: 'Creates a new account from a recovery passphrase',
     params: [
       {
         type: String,
@@ -158,6 +158,24 @@ export default {
     }
   },
 
+  newAccountFromSecret: {
+    desc: 'Creates a new account from a private ethstore secret key',
+    params: [
+      {
+        type: Data,
+        desc: 'Secret, 32-byte hex'
+      },
+      {
+        type: String,
+        desc: 'Password'
+      }
+    ],
+    returns: {
+      type: Address,
+      desc: 'The created address'
+    }
+  },
+
   newAccountFromWallet: {
     desc: 'Creates a new account from a JSON import',
     params: [

js/src/ui/Balance/balance.css

@@ -32,19 +32,25 @@
   border-radius: 16px;
   margin: 0.75em 0.5em 0 0;
   max-height: 24px;
+  max-width: 100%;
+  display: flex;
+  align-items: center;
 }
 
 .balance img {
-  display: inline-block;
   height: 32px;
   margin: -4px 1em 0 0;
   width: 32px;
 }
 
-.balance div {
+.balanceValue {
-  display: inline-block;
-  /*font-family: 'Roboto Mono', monospace;*/
-  line-height: 24px;
   margin: 0 1em 0 0;
-  vertical-align: top;
+  text-overflow: ellipsis;
+  white-space: nowrap;
+  overflow: hidden;
+}
+
+.balanceTag {
+  font-size: 0.85em;
+  padding-right: 0.75rem;
 }

js/src/ui/Balance/balance.js

@@ -56,7 +56,10 @@ class Balance extends Component {
             <img
               src={ imagesrc }
               alt={ token.name } />
-            <div>{ value }<small> { token.tag }</small></div>
+            <div className={ styles.balanceValue }>
+              <span title={ value }> { value } </span>
+            </div>
+            <div className={ styles.balanceTag }> { token.tag } </div>
           </div>
         );
       });

js/src/ui/Container/Title/title.css

@@ -16,6 +16,9 @@
 */
 .byline {
   color: #aaa;
+  text-overflow: ellipsis;
+  white-space: nowrap;
+  overflow: hidden;
 }
 
 .title {

js/src/ui/Container/Title/title.js

@@ -40,7 +40,7 @@ export default class Title extends Component {
           { this.props.title }
         </h3>
         <div className={ styles.byline }>
-          { this.props.byline }
+          <span title={ this.props.byline }>{ this.props.byline }</span>
         </div>
       </div>
     );

json/Cargo.toml

@@ -10,7 +10,7 @@ rustc-serialize = "0.3"
 serde = "0.8"
 serde_json = "0.8"
 serde_macros = { version = "0.8", optional = true }
-clippy = { version = "0.0.90", optional = true}
+clippy = { version = "0.0.96", optional = true}
 
 [build-dependencies]
 serde_codegen = { version = "0.8", optional = true }

parity/cli/config.full.toml

@@ -41,13 +41,13 @@ disable = false
 port = 8545
 interface = "local"
 cors = "null"
-apis = ["web3", "eth", "net", "ethcore", "traces", "rpc"]
+apis = ["web3", "eth", "net", "ethcore", "traces", "rpc", "personal_safe"]
 hosts = ["none"]
 
 [ipc]
 disable = false
 path = "$HOME/.parity/jsonrpc.ipc"
-apis = ["web3", "eth", "net", "ethcore", "traces", "rpc"]
+apis = ["web3", "eth", "net", "ethcore", "traces", "rpc", "personal_safe"]
 
 [dapps]
 disable = false
@@ -74,7 +74,10 @@ gas_cap = "6283184"
 tx_queue_size = 1024
 tx_queue_gas = "auto"
 tx_queue_strategy = "gas_factor"
+tx_queue_ban_count = 1
+tx_queue_ban_time = 180 #s
 tx_gas_limit = "6283184"
+tx_time_limit = 100 #ms
 extra_data = "Parity"
 remove_solved = false
 notify_work = ["http://localhost:3001"]

parity/cli/mod.rs

@@ -145,7 +145,7 @@ usage! {
 			or |c: &Config| otry!(c.rpc).interface.clone(),
 		flag_jsonrpc_cors: Option<String> = None,
 			or |c: &Config| otry!(c.rpc).cors.clone().map(Some),
-		flag_jsonrpc_apis: String = "web3,eth,net,ethcore,traces,rpc",
+		flag_jsonrpc_apis: String = "web3,eth,net,ethcore,traces,rpc,personal_safe",
 			or |c: &Config| otry!(c.rpc).apis.clone().map(|vec| vec.join(",")),
 		flag_jsonrpc_hosts: String = "none",
 			or |c: &Config| otry!(c.rpc).hosts.clone().map(|vec| vec.join(",")),
@@ -155,7 +155,7 @@ usage! {
 			or |c: &Config| otry!(c.ipc).disable.clone(),
 		flag_ipc_path: String = "$HOME/.parity/jsonrpc.ipc",
 			or |c: &Config| otry!(c.ipc).path.clone(),
-		flag_ipc_apis: String = "web3,eth,net,ethcore,traces,rpc",
+		flag_ipc_apis: String = "web3,eth,net,ethcore,traces,rpc,personal_safe",
 			or |c: &Config| otry!(c.ipc).apis.clone().map(|vec| vec.join(",")),
 
 		// DAPPS
@@ -187,6 +187,8 @@ usage! {
 			or |c: &Config| otry!(c.mining).work_queue_size.clone(),
 		flag_tx_gas_limit: Option<String> = None,
 			or |c: &Config| otry!(c.mining).tx_gas_limit.clone().map(Some),
+		flag_tx_time_limit: Option<u64> = None,
+			or |c: &Config| otry!(c.mining).tx_time_limit.clone().map(Some),
 		flag_relay_set: String = "cheap",
 			or |c: &Config| otry!(c.mining).relay_set.clone(),
 		flag_usd_per_tx: String = "0",
@@ -205,8 +207,12 @@ usage! {
 			or |c: &Config| otry!(c.mining).tx_queue_size.clone(),
 		flag_tx_queue_gas: String = "auto",
 			or |c: &Config| otry!(c.mining).tx_queue_gas.clone(),
-		flag_tx_queue_strategy: String = "gas_factor",
+		flag_tx_queue_strategy: String = "gas_price",
 			or |c: &Config| otry!(c.mining).tx_queue_strategy.clone(),
+		flag_tx_queue_ban_count: u16 = 1u16,
+			or |c: &Config| otry!(c.mining).tx_queue_ban_count.clone(),
+		flag_tx_queue_ban_time: u16 = 180u16,
+			or |c: &Config| otry!(c.mining).tx_queue_ban_time.clone(),
 		flag_remove_solved: bool = false,
 			or |c: &Config| otry!(c.mining).remove_solved.clone(),
 		flag_notify_work: Option<String> = None,
@@ -361,6 +367,7 @@ struct Mining {
 	reseal_min_period: Option<u64>,
 	work_queue_size: Option<usize>,
 	tx_gas_limit: Option<String>,
+	tx_time_limit: Option<u64>,
 	relay_set: Option<String>,
 	usd_per_tx: Option<String>,
 	usd_per_eth: Option<String>,
@@ -371,6 +378,8 @@ struct Mining {
 	tx_queue_size: Option<usize>,
 	tx_queue_gas: Option<String>,
 	tx_queue_strategy: Option<String>,
+	tx_queue_ban_count: Option<u16>,
+	tx_queue_ban_time: Option<u16>,
 	remove_solved: Option<bool>,
 	notify_work: Option<Vec<String>>,
 }
@@ -445,6 +454,20 @@ mod tests {
 		assert_eq!(args.flag_chain, "xyz".to_owned());
 	}
 
+	#[test]
+	fn should_use_config_if_cli_is_missing() {
+		let mut config = Config::default();
+		let mut footprint = Footprint::default();
+		footprint.pruning_history = Some(128);
+		config.footprint = Some(footprint);
+
+		// when
+		let args = Args::parse_with_config(&["parity"], config).unwrap();
+
+		// then
+		assert_eq!(args.flag_pruning_history, 128);
+	}
+
 	#[test]
 	fn should_parse_full_config() {
 		// given
@@ -520,13 +543,13 @@ mod tests {
 			flag_jsonrpc_port: 8545u16,
 			flag_jsonrpc_interface: "local".into(),
 			flag_jsonrpc_cors: Some("null".into()),
-			flag_jsonrpc_apis: "web3,eth,net,ethcore,traces,rpc".into(),
+			flag_jsonrpc_apis: "web3,eth,net,ethcore,traces,rpc,personal_safe".into(),
 			flag_jsonrpc_hosts: "none".into(),
 
 			// IPC
 			flag_no_ipc: false,
 			flag_ipc_path: "$HOME/.parity/jsonrpc.ipc".into(),
-			flag_ipc_apis: "web3,eth,net,ethcore,traces,rpc".into(),
+			flag_ipc_apis: "web3,eth,net,ethcore,traces,rpc,personal_safe".into(),
 
 			// DAPPS
 			flag_no_dapps: false,
@@ -544,6 +567,7 @@ mod tests {
 			flag_reseal_min_period: 4000u64,
 			flag_work_queue_size: 20usize,
 			flag_tx_gas_limit: Some("6283184".into()),
+			flag_tx_time_limit: Some(100u64),
 			flag_relay_set: "cheap".into(),
 			flag_usd_per_tx: "0".into(),
 			flag_usd_per_eth: "auto".into(),
@@ -554,6 +578,8 @@ mod tests {
 			flag_tx_queue_size: 1024usize,
 			flag_tx_queue_gas: "auto".into(),
 			flag_tx_queue_strategy: "gas_factor".into(),
+			flag_tx_queue_ban_count: 1u16,
+			flag_tx_queue_ban_time: 180u16,
 			flag_remove_solved: false,
 			flag_notify_work: Some("http://localhost:3001".into()),
 
@@ -713,7 +739,10 @@ mod tests {
 				tx_queue_size: Some(1024),
 				tx_queue_gas: Some("auto".into()),
 				tx_queue_strategy: None,
+				tx_queue_ban_count: None,
+				tx_queue_ban_time: None,
 				tx_gas_limit: None,
+				tx_time_limit: None,
 				extra_data: None,
 				remove_solved: None,
 				notify_work: None,

parity/cli/usage.txt

@@ -107,7 +107,7 @@ API and Console Options:
   --jsonrpc-apis APIS      Specify the APIs available through the JSONRPC
                            interface. APIS is a comma-delimited list of API
                            name. Possible name are web3, eth, net, personal,
-                           ethcore, ethcore_set, traces, rpc.
+                           ethcore, ethcore_set, traces, rpc, personal_safe.
                            (default: {flag_jsonrpc_apis}).
   --jsonrpc-hosts HOSTS    List of allowed Host header values. This option will
                            validate the Host header sent by the browser, it
@@ -166,6 +166,11 @@ Sealing/Mining Options:
   --tx-gas-limit GAS       Apply a limit of GAS as the maximum amount of gas
                            a single transaction may have for it to be mined.
                            (default: {flag_tx_gas_limit:?})
+  --tx-time-limit MS       Maximal time for processing single transaction.
+                           If enabled senders/recipients/code of transactions
+                           offending the limit will be banned from being included
+                           in transaction queue for 180 seconds.
+                           (default: {flag_tx_time_limit:?})
   --relay-set SET          Set of transactions to relay. SET may be:
                            cheap - Relay any transaction in the queue (this
                            may include invalid transactions);
@@ -203,6 +208,13 @@ Sealing/Mining Options:
                            gas_price - Prioritize txs with high gas price;
                            gas_factor - Prioritize txs using gas price
                            and gas limit ratio (default: {flag_tx_queue_strategy}).
+  --tx-queue-ban-count C   Number of times maximal time for execution (--tx-time-limit)
+                           can be exceeded before banning sender/recipient/code.
+                           (default: {flag_tx_queue_ban_count})
+  --tx-queue-ban-time SEC  Banning time (in seconds) for offenders of specified
+                           execution time limit. Also number of offending actions
+                           have to reach the threshold within that time.
+                           (default: {flag_tx_queue_ban_time} seconds)
   --remove-solved          Move solved blocks from the work package queue
                            instead of cloning them. This gives a slightly
                            faster import speed, but means that extra solutions
@@ -225,7 +237,7 @@ Footprint Options:
                            auto - use the method most recently synced or
                            default to fast if none synced (default: {flag_pruning}).
   --pruning-history NUM    Set a number of recent states to keep when pruning
-                           is active. [default: {flag_pruning_history}].
+                           is active. (default: {flag_pruning_history}).
   --cache-size-db MB       Override database cache size (default: {flag_cache_size_db}).
   --cache-size-blocks MB   Specify the prefered size of the blockchain cache in
                            megabytes (default: {flag_cache_size_blocks}).

parity/configuration.rs

@@ -24,7 +24,7 @@ use util::{Hashable, U256, Uint, Bytes, version_data, Secret, Address};
 use util::log::Colour;
 use ethsync::{NetworkConfiguration, is_valid_node_url, AllowIP};
 use ethcore::client::{VMType, Mode};
-use ethcore::miner::MinerOptions;
+use ethcore::miner::{MinerOptions, Banning};
 
 use rpc::{IpcConfiguration, HttpConfiguration};
 use ethcore_rpc::NetworkSettings;
@@ -387,6 +387,14 @@ impl Configuration {
 			reseal_min_period: Duration::from_millis(self.args.flag_reseal_min_period),
 			work_queue_size: self.args.flag_work_queue_size,
 			enable_resubmission: !self.args.flag_remove_solved,
+			tx_queue_banning: match self.args.flag_tx_time_limit {
+				Some(limit) => Banning::Enabled {
+					min_offends: self.args.flag_tx_queue_ban_count,
+					offend_threshold: Duration::from_millis(limit),
+					ban_duration: Duration::from_secs(self.args.flag_tx_queue_ban_time as u64),
+				},
+				None => Banning::Disabled,
+			}
 		};
 
 		Ok(options)

parity/rpc_apis.rs

@@ -33,7 +33,8 @@ pub enum Api {
 	Web3,
 	Net,
 	Eth,
-	Personal,
+	PersonalSafe,
+	PersonalAccounts,
 	Signer,
 	Ethcore,
 	EthcoreSet,
@@ -51,7 +52,8 @@ impl FromStr for Api {
 			"web3" => Ok(Web3),
 			"net" => Ok(Net),
 			"eth" => Ok(Eth),
-			"personal" => Ok(Personal),
+			"personal" => Ok(PersonalAccounts),
+			"personal_safe" => Ok(PersonalSafe),
 			"signer" => Ok(Signer),
 			"ethcore" => Ok(Ethcore),
 			"ethcore_set" => Ok(EthcoreSet),
@@ -114,7 +116,8 @@ fn to_modules(apis: &[Api]) -> BTreeMap<String, String> {
 			Api::Web3 => ("web3", "1.0"),
 			Api::Net => ("net", "1.0"),
 			Api::Eth => ("eth", "1.0"),
-			Api::Personal => ("personal", "1.0"),
+			Api::PersonalSafe => ("personal_safe", "1.0"),
+			Api::PersonalAccounts => ("personal", "1.0"),
 			Api::Signer => ("signer", "1.0"),
 			Api::Ethcore => ("ethcore", "1.0"),
 			Api::EthcoreSet => ("ethcore_set", "1.0"),
@@ -131,11 +134,11 @@ impl ApiSet {
 		match *self {
 			ApiSet::List(ref apis) => apis.clone(),
 			ApiSet::UnsafeContext => {
-				vec![Api::Web3, Api::Net, Api::Eth, Api::Ethcore, Api::Traces, Api::Rpc]
+				vec![Api::Web3, Api::Net, Api::Eth, Api::Ethcore, Api::Traces, Api::Rpc, Api::PersonalSafe]
 					.into_iter().collect()
 			},
 			ApiSet::SafeContext => {
-				vec![Api::Web3, Api::Net, Api::Eth, Api::Personal, Api::Signer, Api::Ethcore, Api::EthcoreSet, Api::Traces, Api::Rpc]
+				vec![Api::Web3, Api::Net, Api::Eth, Api::PersonalAccounts, Api::PersonalSafe, Api::Signer, Api::Ethcore, Api::EthcoreSet, Api::Traces, Api::Rpc]
 					.into_iter().collect()
 			},
 		}
@@ -178,8 +181,11 @@ pub fn setup_rpc<T: Extendable>(server: T, deps: Arc<Dependencies>, apis: ApiSet
 					server.add_delegate(EthSigningUnsafeClient::new(&deps.client, &deps.secret_store, &deps.miner).to_delegate());
 				}
 			},
-			Api::Personal => {
+			Api::PersonalAccounts => {
-				server.add_delegate(PersonalClient::new(&deps.secret_store, &deps.client, &deps.miner, deps.geth_compatibility).to_delegate());
+				server.add_delegate(PersonalAccountsClient::new(&deps.secret_store, &deps.client, &deps.miner, deps.geth_compatibility).to_delegate());
+			},
+			Api::PersonalSafe => {
+				server.add_delegate(PersonalClient::new(&deps.secret_store, &deps.client).to_delegate());
 			},
 			Api::Signer => {
 				server.add_delegate(SignerClient::new(&deps.secret_store, &deps.client, &deps.miner, &deps.signer_service).to_delegate());
@@ -224,7 +230,8 @@ mod test {
 		assert_eq!(Api::Web3, "web3".parse().unwrap());
 		assert_eq!(Api::Net, "net".parse().unwrap());
 		assert_eq!(Api::Eth, "eth".parse().unwrap());
-		assert_eq!(Api::Personal, "personal".parse().unwrap());
+		assert_eq!(Api::PersonalAccounts, "personal".parse().unwrap());
+		assert_eq!(Api::PersonalSafe, "personal_safe".parse().unwrap());
 		assert_eq!(Api::Signer, "signer".parse().unwrap());
 		assert_eq!(Api::Ethcore, "ethcore".parse().unwrap());
 		assert_eq!(Api::EthcoreSet, "ethcore_set".parse().unwrap());
@@ -245,14 +252,14 @@ mod test {
 
 	#[test]
 	fn test_api_set_unsafe_context() {
-		let expected = vec![Api::Web3, Api::Net, Api::Eth, Api::Ethcore, Api::Traces, Api::Rpc]
+		let expected = vec![Api::Web3, Api::Net, Api::Eth, Api::Ethcore, Api::Traces, Api::Rpc, Api::PersonalSafe]
 			.into_iter().collect();
 		assert_eq!(ApiSet::UnsafeContext.list_apis(), expected);
 	}
 
 	#[test]
 	fn test_api_set_safe_context() {
-		let expected = vec![Api::Web3, Api::Net, Api::Eth, Api::Personal, Api::Signer, Api::Ethcore, Api::EthcoreSet, Api::Traces, Api::Rpc]
+		let expected = vec![Api::Web3, Api::Net, Api::Eth, Api::PersonalAccounts, Api::PersonalSafe, Api::Signer, Api::Ethcore, Api::EthcoreSet, Api::Traces, Api::Rpc]
 			.into_iter().collect();
 		assert_eq!(ApiSet::SafeContext.list_apis(), expected);
 	}

rpc/Cargo.toml

@@ -29,7 +29,7 @@ fetch = { path = "../util/fetch" }
 rustc-serialize = "0.3"
 transient-hashmap = "0.1"
 serde_macros = { version = "0.8.0", optional = true }
-clippy = { version = "0.0.90", optional = true}
+clippy = { version = "0.0.96", optional = true}
 json-ipc-server = { git = "https://github.com/ethcore/json-ipc-server.git" }
 ethcore-ipc = { path = "../ipc/rpc" }
 time = "0.1"

rpc/src/v1/helpers/errors.rs

@@ -221,6 +221,9 @@ pub fn from_transaction_error(error: EthcoreError) -> Error {
 			LimitReached => {
 				"There are too many transactions in the queue. Your transaction was dropped due to limit. Try increasing the fee.".into()
 			},
+			InsufficientGas { minimal, got } => {
+				format!("Transaction gas is too low. There is not enough gas to cover minimal cost of the transaction (minimal: {}, got: {}). Try increasing supplied gas.", minimal, got)
+			},
 			InsufficientGasPrice { minimal, got } => {
 				format!("Transaction gas price is too low. It does not satisfy your node's minimal gas price (minimal: {}, got: {}). Try increasing the gas price.", minimal, got)
 			},
@@ -231,6 +234,9 @@ pub fn from_transaction_error(error: EthcoreError) -> Error {
 				format!("Transaction cost exceeds current gas limit. Limit: {}, got: {}. Try decreasing supplied gas.", limit, got)
 			},
 			InvalidGasLimit(_) => "Supplied gas is beyond limit.".into(),
+			SenderBanned => "Sender is banned in local queue.".into(),
+			RecipientBanned => "Recipient is banned in local queue.".into(),
+			CodeBanned => "Code is banned in local queue.".into(),
 		};
 		Error {
 			code: ErrorCode::ServerError(codes::TRANSACTION_ERROR),

rpc/src/v1/impls/ethcore.rs

@@ -334,4 +334,17 @@ impl<C, M, S: ?Sized, F> Ethcore for EthcoreClient<C, M, S, F> where
 		self.dapps_port
 			.ok_or_else(|| errors::dapps_disabled())
 	}
+
+	fn next_nonce(&self, address: H160) -> Result<U256, Error> {
+		try!(self.active());
+		let address: Address = address.into();
+		let miner = take_weak!(self.miner);
+		let client = take_weak!(self.client);
+
+		Ok(miner.last_nonce(&address)
+			.map(|n| n + 1.into())
+			.unwrap_or_else(|| client.latest_nonce(&address))
+			.into()
+		)
+	}
 }

rpc/src/v1/impls/mod.rs

@@ -32,6 +32,7 @@ mod ethcore;
 mod ethcore_set;
 mod net;
 mod personal;
+mod personal_accounts;
 mod personal_signer;
 mod rpc;
 mod traces;
@@ -43,6 +44,7 @@ pub use self::eth_filter::EthFilterClient;
 pub use self::eth_signing::{EthSigningUnsafeClient, EthSigningQueueClient};
 pub use self::net::NetClient;
 pub use self::personal::PersonalClient;
+pub use self::personal_accounts::PersonalAccountsClient;
 pub use self::personal_signer::SignerClient;
 pub use self::ethcore::EthcoreClient;
 pub use self::ethcore_set::EthcoreSetClient;

rpc/src/v1/impls/personal.rs

@@ -17,34 +17,26 @@
 //! Account management (personal) rpc implementation
 use std::sync::{Arc, Weak};
 use std::collections::{BTreeMap};
-use util::{Address};
 use jsonrpc_core::*;
-use ethkey::{Brain, Generator};
 use v1::traits::Personal;
-use v1::types::{H160 as RpcH160, TransactionRequest};
+use v1::types::{H160 as RpcH160};
 use v1::helpers::errors;
 use v1::helpers::params::expect_no_params;
-use v1::helpers::dispatch::sign_and_dispatch;
 use ethcore::account_provider::AccountProvider;
 use ethcore::client::MiningBlockChainClient;
-use ethcore::miner::MinerService;
 
 /// Account management (personal) rpc implementation.
-pub struct PersonalClient<C, M> where C: MiningBlockChainClient, M: MinerService {
+pub struct PersonalClient<C> where C: MiningBlockChainClient {
 	accounts: Weak<AccountProvider>,
 	client: Weak<C>,
-	miner: Weak<M>,
-	allow_perm_unlock: bool,
 }
 
-impl<C, M> PersonalClient<C, M> where C: MiningBlockChainClient, M: MinerService {
+impl<C> PersonalClient<C> where C: MiningBlockChainClient {
 	/// Creates new PersonalClient
-	pub fn new(store: &Arc<AccountProvider>, client: &Arc<C>, miner: &Arc<M>, allow_perm_unlock: bool) -> Self {
+	pub fn new(store: &Arc<AccountProvider>, client: &Arc<C>) -> Self {
 		PersonalClient {
 			accounts: Arc::downgrade(store),
 			client: Arc::downgrade(client),
-			miner: Arc::downgrade(miner),
-			allow_perm_unlock: allow_perm_unlock,
 		}
 	}
 
@@ -55,7 +47,7 @@ impl<C, M> PersonalClient<C, M> where C: MiningBlockChainClient, M: MinerService
 	}
 }
 
-impl<C: 'static, M: 'static> Personal for PersonalClient<C, M> where C: MiningBlockChainClient, M: MinerService {
+impl<C: 'static> Personal for PersonalClient<C> where C: MiningBlockChainClient {
 
 	fn accounts(&self, params: Params) -> Result<Value, Error> {
 		try!(self.active());
@@ -66,125 +58,6 @@ impl<C: 'static, M: 'static> Personal for PersonalClient<C, M> where C: MiningBl
 		Ok(to_value(&accounts.into_iter().map(Into::into).collect::<Vec<RpcH160>>()))
 	}
 
-	fn new_account(&self, params: Params) -> Result<Value, Error> {
-		try!(self.active());
-		from_params::<(String, )>(params).and_then(
-			|(pass, )| {
-				let store = take_weak!(self.accounts);
-				match store.new_account(&pass) {
-					Ok(address) => Ok(to_value(&RpcH160::from(address))),
-					Err(e) => Err(errors::account("Could not create account.", e)),
-				}
-			}
-		)
-	}
-
-	fn new_account_from_phrase(&self, params: Params) -> Result<Value, Error> {
-		try!(self.active());
-		from_params::<(String, String, )>(params).and_then(
-			|(phrase, pass, )| {
-				let store = take_weak!(self.accounts);
-				match store.insert_account(*Brain::new(phrase).generate().unwrap().secret(), &pass) {
-					Ok(address) => Ok(to_value(&RpcH160::from(address))),
-					Err(e) => Err(errors::account("Could not create account.", e)),
-				}
-			}
-		)
-	}
-
-	fn new_account_from_wallet(&self, params: Params) -> Result<Value, Error> {
-		try!(self.active());
-		from_params::<(String, String, )>(params).and_then(
-			|(json, pass, )| {
-				let store = take_weak!(self.accounts);
-				match store.import_presale(json.as_bytes(), &pass).or_else(|_| store.import_wallet(json.as_bytes(), &pass)) {
-					Ok(address) => Ok(to_value(&RpcH160::from(address))),
-					Err(e) => Err(errors::account("Could not create account.", e)),
-				}
-			}
-		)
-	}
-
-	fn unlock_account(&self, params: Params) -> Result<Value, Error> {
-		try!(self.active());
-		from_params::<(RpcH160, String, Option<u64>)>(params).and_then(
-			|(account, account_pass, duration)| {
-				let account: Address = account.into();
-				let store = take_weak!(self.accounts);
-				let r = match (self.allow_perm_unlock, duration) {
-					(false, _) => store.unlock_account_temporarily(account, account_pass),
-					(true, Some(0)) => store.unlock_account_permanently(account, account_pass),
-					(true, Some(d)) => store.unlock_account_timed(account, account_pass, d as u32 * 1000),
-					(true, None) => store.unlock_account_timed(account, account_pass, 300_000),
-				};
-				match r {
-					Ok(_) => Ok(Value::Bool(true)),
-					Err(_) => Ok(Value::Bool(false)),
-				}
-			}
-		)
-	}
-
-	fn test_password(&self, params: Params) -> Result<Value, Error> {
-		try!(self.active());
-		from_params::<(RpcH160, String)>(params).and_then(
-			|(account, password)| {
-				let account: Address = account.into();
-				take_weak!(self.accounts)
-					.test_password(&account, password)
-					.map(|b| Value::Bool(b))
-					.map_err(|e| errors::account("Could not fetch account info.", e))
-			}
-		)
-	}
-
-	fn change_password(&self, params: Params) -> Result<Value, Error> {
-		try!(self.active());
-		from_params::<(RpcH160, String, String)>(params).and_then(
-			|(account, password, new_password)| {
-				let account: Address = account.into();
-				take_weak!(self.accounts)
-					.change_password(&account, password, new_password)
-					.map(|_| Value::Null)
-					.map_err(|e| errors::account("Could not fetch account info.", e))
-			}
-		)
-	}
-
-	fn sign_and_send_transaction(&self, params: Params) -> Result<Value, Error> {
-		try!(self.active());
-		from_params::<(TransactionRequest, String)>(params)
-			.and_then(|(request, password)| {
-				sign_and_dispatch(
-					&*take_weak!(self.client),
-					&*take_weak!(self.miner),
-					&*take_weak!(self.accounts),
-					request.into(),
-					Some(password)
-				)
-			})
-	}
-
-	fn set_account_name(&self, params: Params) -> Result<Value, Error> {
-		try!(self.active());
-		let store = take_weak!(self.accounts);
-		from_params::<(RpcH160, String)>(params).and_then(|(addr, name)| {
-			let addr: Address = addr.into();
-			store.set_account_name(addr.clone(), name.clone()).or_else(|_| store.set_address_name(addr, name)).expect("set_address_name always returns Ok; qed");
-			Ok(Value::Null)
-		})
-	}
-
-	fn set_account_meta(&self, params: Params) -> Result<Value, Error> {
-		try!(self.active());
-		let store = take_weak!(self.accounts);
-		from_params::<(RpcH160, String)>(params).and_then(|(addr, meta)| {
-			let addr: Address = addr.into();
-			store.set_account_meta(addr.clone(), meta.clone()).or_else(|_| store.set_address_meta(addr, meta)).expect("set_address_meta always returns Ok; qed");
-			Ok(Value::Null)
-		})
-	}
-
 	fn accounts_info(&self, params: Params) -> Result<Value, Error> {
 		try!(self.active());
 		try!(expect_no_params(params));
@@ -204,21 +77,4 @@ impl<C: 'static, M: 'static> Personal for PersonalClient<C, M> where C: MiningBl
 			(format!("0x{}", a.hex()), Value::Object(m))
 		}).collect::<BTreeMap<_, _>>()))
 	}
-
-	fn geth_accounts(&self, params: Params) -> Result<Value, Error> {
-		try!(self.active());
-		try!(expect_no_params(params));
-		let store = take_weak!(self.accounts);
-		Ok(to_value(&store.list_geth_accounts(false).into_iter().map(Into::into).collect::<Vec<RpcH160>>()))
-	}
-
-	fn import_geth_accounts(&self, params: Params) -> Result<Value, Error> {
-		from_params::<(Vec<RpcH160>,)>(params).and_then(|(addresses,)| {
-			let store = take_weak!(self.accounts);
-			Ok(to_value(&try!(store
-				.import_geth_accounts(addresses.into_iter().map(Into::into).collect(), false)
-				.map_err(|e| errors::account("Couldn't import Geth accounts", e))
-			).into_iter().map(Into::into).collect::<Vec<RpcH160>>()))
-		})
-	}
 }

rpc/src/v1/impls/personal_accounts.rs

@@ -0,0 +1,207 @@
+// 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/>.
+
+//! Account management (personal) rpc implementation
+use std::sync::{Arc, Weak};
+use util::{Address};
+use jsonrpc_core::*;
+use ethkey::{Brain, Generator};
+use v1::traits::PersonalAccounts;
+use v1::types::{H160 as RpcH160, H256 as RpcH256, TransactionRequest};
+use v1::helpers::errors;
+use v1::helpers::params::expect_no_params;
+use v1::helpers::dispatch::sign_and_dispatch;
+use ethcore::account_provider::AccountProvider;
+use ethcore::client::MiningBlockChainClient;
+use ethcore::miner::MinerService;
+
+/// Account management (personal) rpc implementation.
+pub struct PersonalAccountsClient<C, M> where C: MiningBlockChainClient, M: MinerService {
+	accounts: Weak<AccountProvider>,
+	client: Weak<C>,
+	miner: Weak<M>,
+	allow_perm_unlock: bool,
+}
+
+impl<C, M> PersonalAccountsClient<C, M> where C: MiningBlockChainClient, M: MinerService {
+	/// Creates new PersonalClient
+	pub fn new(store: &Arc<AccountProvider>, client: &Arc<C>, miner: &Arc<M>, allow_perm_unlock: bool) -> Self {
+		PersonalAccountsClient {
+			accounts: Arc::downgrade(store),
+			client: Arc::downgrade(client),
+			miner: Arc::downgrade(miner),
+			allow_perm_unlock: allow_perm_unlock,
+		}
+	}
+
+	fn active(&self) -> Result<(), Error> {
+		// TODO: only call every 30s at most.
+		take_weak!(self.client).keep_alive();
+		Ok(())
+	}
+}
+
+impl<C: 'static, M: 'static> PersonalAccounts for PersonalAccountsClient<C, M> where C: MiningBlockChainClient, M: MinerService {
+
+	fn new_account(&self, params: Params) -> Result<Value, Error> {
+		try!(self.active());
+		from_params::<(String, )>(params).and_then(
+			|(pass, )| {
+				let store = take_weak!(self.accounts);
+				match store.new_account(&pass) {
+					Ok(address) => Ok(to_value(&RpcH160::from(address))),
+					Err(e) => Err(errors::account("Could not create account.", e)),
+				}
+			}
+		)
+	}
+
+	fn new_account_from_phrase(&self, params: Params) -> Result<Value, Error> {
+		try!(self.active());
+		from_params::<(String, String, )>(params).and_then(
+			|(phrase, pass, )| {
+				let store = take_weak!(self.accounts);
+				match store.insert_account(*Brain::new(phrase).generate().unwrap().secret(), &pass) {
+					Ok(address) => Ok(to_value(&RpcH160::from(address))),
+					Err(e) => Err(errors::account("Could not create account.", e)),
+				}
+			}
+		)
+	}
+
+	fn new_account_from_wallet(&self, params: Params) -> Result<Value, Error> {
+		try!(self.active());
+		from_params::<(String, String, )>(params).and_then(
+			|(json, pass, )| {
+				let store = take_weak!(self.accounts);
+				match store.import_presale(json.as_bytes(), &pass).or_else(|_| store.import_wallet(json.as_bytes(), &pass)) {
+					Ok(address) => Ok(to_value(&RpcH160::from(address))),
+					Err(e) => Err(errors::account("Could not create account.", e)),
+				}
+			}
+		)
+	}
+
+	fn new_account_from_secret(&self, params: Params) -> Result<Value, Error> {
+		try!(self.active());
+		from_params::<(RpcH256, String, )>(params).and_then(
+			|(secret, pass, )| {
+				let store = take_weak!(self.accounts);
+				match store.insert_account(secret.into(), &pass) {
+					Ok(address) => Ok(to_value(&RpcH160::from(address))),
+					Err(e) => Err(errors::account("Could not create account.", e)),
+				}
+			}
+		)
+	}
+
+	fn unlock_account(&self, params: Params) -> Result<Value, Error> {
+		try!(self.active());
+		from_params::<(RpcH160, String, Option<u64>)>(params).and_then(
+			|(account, account_pass, duration)| {
+				let account: Address = account.into();
+				let store = take_weak!(self.accounts);
+				let r = match (self.allow_perm_unlock, duration) {
+					(false, _) => store.unlock_account_temporarily(account, account_pass),
+					(true, Some(0)) => store.unlock_account_permanently(account, account_pass),
+					(true, Some(d)) => store.unlock_account_timed(account, account_pass, d as u32 * 1000),
+					(true, None) => store.unlock_account_timed(account, account_pass, 300_000),
+				};
+				match r {
+					Ok(_) => Ok(Value::Bool(true)),
+					Err(_) => Ok(Value::Bool(false)),
+				}
+			}
+		)
+	}
+
+	fn test_password(&self, params: Params) -> Result<Value, Error> {
+		try!(self.active());
+		from_params::<(RpcH160, String)>(params).and_then(
+			|(account, password)| {
+				let account: Address = account.into();
+				take_weak!(self.accounts)
+					.test_password(&account, password)
+					.map(|b| Value::Bool(b))
+					.map_err(|e| errors::account("Could not fetch account info.", e))
+			}
+		)
+	}
+
+	fn change_password(&self, params: Params) -> Result<Value, Error> {
+		try!(self.active());
+		from_params::<(RpcH160, String, String)>(params).and_then(
+			|(account, password, new_password)| {
+				let account: Address = account.into();
+				take_weak!(self.accounts)
+					.change_password(&account, password, new_password)
+					.map(|_| Value::Null)
+					.map_err(|e| errors::account("Could not fetch account info.", e))
+			}
+		)
+	}
+
+	fn sign_and_send_transaction(&self, params: Params) -> Result<Value, Error> {
+		try!(self.active());
+		from_params::<(TransactionRequest, String)>(params)
+			.and_then(|(request, password)| {
+				sign_and_dispatch(
+					&*take_weak!(self.client),
+					&*take_weak!(self.miner),
+					&*take_weak!(self.accounts),
+					request.into(),
+					Some(password)
+				)
+			})
+	}
+
+	fn set_account_name(&self, params: Params) -> Result<Value, Error> {
+		try!(self.active());
+		let store = take_weak!(self.accounts);
+		from_params::<(RpcH160, String)>(params).and_then(|(addr, name)| {
+			let addr: Address = addr.into();
+			store.set_account_name(addr.clone(), name.clone()).or_else(|_| store.set_address_name(addr, name)).expect("set_address_name always returns Ok; qed");
+			Ok(Value::Null)
+		})
+	}
+
+	fn set_account_meta(&self, params: Params) -> Result<Value, Error> {
+		try!(self.active());
+		let store = take_weak!(self.accounts);
+		from_params::<(RpcH160, String)>(params).and_then(|(addr, meta)| {
+			let addr: Address = addr.into();
+			store.set_account_meta(addr.clone(), meta.clone()).or_else(|_| store.set_address_meta(addr, meta)).expect("set_address_meta always returns Ok; qed");
+			Ok(Value::Null)
+		})
+	}
+
+	fn import_geth_accounts(&self, params: Params) -> Result<Value, Error> {
+		from_params::<(Vec<RpcH160>,)>(params).and_then(|(addresses,)| {
+			let store = take_weak!(self.accounts);
+			Ok(to_value(&try!(store
+				.import_geth_accounts(addresses.into_iter().map(Into::into).collect(), false)
+				.map_err(|e| errors::account("Couldn't import Geth accounts", e))
+			).into_iter().map(Into::into).collect::<Vec<RpcH160>>()))
+		})
+	}
+
+	fn geth_accounts(&self, params: Params) -> Result<Value, Error> {
+		try!(self.active());
+		try!(expect_no_params(params));
+		let store = take_weak!(self.accounts);
+		Ok(to_value(&store.list_geth_accounts(false).into_iter().map(Into::into).collect::<Vec<RpcH160>>()))
+	}
+}

rpc/src/v1/mod.rs

@@ -26,6 +26,6 @@ pub mod traits;
 pub mod tests;
 pub mod types;
 
-pub use self::traits::{Web3, Eth, EthFilter, EthSigning, Personal, PersonalSigner, Net, Ethcore, EthcoreSet, Traces, Rpc};
+pub use self::traits::{Web3, Eth, EthFilter, EthSigning, Personal, PersonalAccounts, PersonalSigner, Net, Ethcore, EthcoreSet, Traces, Rpc};
 pub use self::impls::*;
 pub use self::helpers::{SigningQueue, SignerService, ConfirmationsQueue, NetworkSettings, block_import};

rpc/src/v1/tests/eth.rs

@@ -24,7 +24,7 @@ use ethcore::spec::{Genesis, Spec};
 use ethcore::block::Block;
 use ethcore::views::BlockView;
 use ethcore::ethereum;
-use ethcore::miner::{MinerOptions, GasPricer, MinerService, ExternalMiner, Miner, PendingSet, PrioritizationStrategy, GasLimit};
+use ethcore::miner::{MinerOptions, Banning, GasPricer, MinerService, ExternalMiner, Miner, PendingSet, PrioritizationStrategy, GasLimit};
 use ethcore::account_provider::AccountProvider;
 use devtools::RandomTempPath;
 use util::Hashable;
@@ -61,6 +61,7 @@ fn miner_service(spec: &Spec, accounts: Arc<AccountProvider>) -> Arc<Miner> {
 			tx_gas_limit: !U256::zero(),
 			tx_queue_strategy: PrioritizationStrategy::GasPriceOnly,
 			tx_queue_gas_limit: GasLimit::None,
+			tx_queue_banning: Banning::Disabled,
 			pending_set: PendingSet::SealingOrElseQueue,
 			reseal_min_period: Duration::from_secs(0),
 			work_queue_size: 50,

rpc/src/v1/tests/mocked/ethcore.rs

@@ -16,7 +16,7 @@
 
 use std::sync::Arc;
 use util::log::RotatingLogger;
-use util::U256;
+use util::{U256, Address};
 use ethsync::ManageNetwork;
 use ethcore::client::{TestBlockChainClient};
 use ethstore::ethkey::{Generator, Random};
@@ -320,3 +320,25 @@ fn rpc_ethcore_dapps_port() {
 	assert_eq!(io1.handle_request_sync(request), Some(response1.to_owned()));
 	assert_eq!(io2.handle_request_sync(request), Some(response2.to_owned()));
 }
+
+#[test]
+fn rpc_ethcore_next_nonce() {
+	let deps = Dependencies::new();
+	let address = Address::default();
+	let io1 = deps.default_client();
+	let deps = Dependencies::new();
+	deps.miner.last_nonces.write().insert(address.clone(), 2.into());
+	let io2 = deps.default_client();
+
+	let request = r#"{
+		"jsonrpc": "2.0",
+		"method": "ethcore_nextNonce",
+		"params": [""#.to_owned() + &format!("0x{:?}", address) + r#""],
+		"id": 1
+	}"#;
+	let response1 = r#"{"jsonrpc":"2.0","result":"0x0","id":1}"#;
+	let response2 = r#"{"jsonrpc":"2.0","result":"0x3","id":1}"#;
+
+	assert_eq!(io1.handle_request_sync(&request), Some(response1.to_owned()));
+	assert_eq!(io2.handle_request_sync(&request), Some(response2.to_owned()));
+}

rpc/src/v1/tests/mocked/personal.rs

@@ -19,7 +19,7 @@ use std::str::FromStr;
 use jsonrpc_core::IoHandler;
 use util::{U256, Uint, Address};
 use ethcore::account_provider::AccountProvider;
-use v1::{PersonalClient, Personal};
+use v1::{PersonalClient, PersonalAccountsClient, PersonalAccounts, Personal};
 use v1::tests::helpers::TestMinerService;
 use ethcore::client::TestBlockChainClient;
 use ethcore::transaction::{Action, Transaction};
@@ -50,10 +50,12 @@ fn setup() -> PersonalTester {
 	let accounts = accounts_provider();
 	let client = blockchain_client();
 	let miner = miner_service();
-	let personal = PersonalClient::new(&accounts, &client, &miner, false);
+	let personal = PersonalClient::new(&accounts, &client);
+	let personal_accounts = PersonalAccountsClient::new(&accounts, &client, &miner, false);
 
 	let io = IoHandler::new();
 	io.add_delegate(personal.to_delegate());
+	io.add_delegate(personal_accounts.to_delegate());
 
 	let tester = PersonalTester {
 		accounts: accounts,

rpc/src/v1/traits/ethcore.rs

@@ -125,5 +125,9 @@ build_rpc_trait! {
 		/// Returns current Dapps Server port or an error if dapps server is disabled.
 		#[rpc(name = "ethcore_dappsPort")]
 		fn dapps_port(&self) -> Result<u16, Error>;
+
+		/// Returns next nonce for particular sender. Should include all transactions in the queue.
+		#[rpc(name = "ethcore_nextNonce")]
+		fn next_nonce(&self, H160) -> Result<U256, Error>;
 	}
 }

rpc/src/v1/traits/mod.rs

@@ -30,7 +30,7 @@ pub use self::web3::Web3;
 pub use self::eth::{Eth, EthFilter};
 pub use self::eth_signing::EthSigning;
 pub use self::net::Net;
-pub use self::personal::{Personal, PersonalSigner};
+pub use self::personal::{Personal, PersonalAccounts, PersonalSigner};
 pub use self::ethcore::Ethcore;
 pub use self::ethcore_set::EthcoreSet;
 pub use self::traces::Traces;

rpc/src/v1/traits/personal.rs

@@ -18,12 +18,28 @@
 use std::sync::Arc;
 use jsonrpc_core::*;
 
-/// Personal rpc interface.
+/// Personal rpc interface. Safe (read-only) functions.
 pub trait Personal: Sized + Send + Sync + 'static {
 
 	/// Lists all stored accounts
 	fn accounts(&self, _: Params) -> Result<Value, Error>;
 
+	/// Returns accounts information.
+	fn accounts_info(&self, _: Params) -> Result<Value, Error>;
+
+	/// Should be used to convert object to io delegate.
+	fn to_delegate(self) -> IoDelegate<Self> {
+		let mut delegate = IoDelegate::new(Arc::new(self));
+		delegate.add_method("personal_listAccounts", Personal::accounts);
+		delegate.add_method("personal_accountsInfo", Personal::accounts_info);
+
+		delegate
+	}
+}
+
+/// Personal rpc methods altering stored accounts or their settings.
+pub trait PersonalAccounts: Sized + Send + Sync + 'static {
+
 	/// Creates new account (it becomes new current unlocked account)
 	/// Param is the password for the account.
 	fn new_account(&self, _: Params) -> Result<Value, Error>;
@@ -36,6 +52,10 @@ pub trait Personal: Sized + Send + Sync + 'static {
 	/// Second parameter is password for the wallet and the new account.
 	fn new_account_from_wallet(&self, params: Params) -> Result<Value, Error>;
 
+	/// Creates new account from the given raw secret.
+	/// Second parameter is password for the new account.
+	fn new_account_from_secret(&self, params: Params) -> Result<Value, Error>;
+
 	/// Unlocks specified account for use (can only be one unlocked account at one moment)
 	fn unlock_account(&self, _: Params) -> Result<Value, Error>;
 
@@ -56,31 +76,27 @@ pub trait Personal: Sized + Send + Sync + 'static {
 	/// Set an account's metadata string.
 	fn set_account_meta(&self, _: Params) -> Result<Value, Error>;
 
-	/// Returns accounts information.
+	/// Imports a number of Geth accounts, with the list provided as the argument.
-	fn accounts_info(&self, _: Params) -> Result<Value, Error>;
+	fn import_geth_accounts(&self, _: Params) -> Result<Value, Error>;
 
 	/// Returns the accounts available for importing from Geth.
 	fn geth_accounts(&self, _: Params) -> Result<Value, Error>;
 
-	/// Imports a number of Geth accounts, with the list provided as the argument.
-	fn import_geth_accounts(&self, _: Params) -> Result<Value, Error>;
-
 	/// Should be used to convert object to io delegate.
 	fn to_delegate(self) -> IoDelegate<Self> {
 		let mut delegate = IoDelegate::new(Arc::new(self));
-		delegate.add_method("personal_listAccounts", Personal::accounts);
+		delegate.add_method("personal_newAccount", PersonalAccounts::new_account);
-		delegate.add_method("personal_newAccount", Personal::new_account);
+		delegate.add_method("personal_newAccountFromPhrase", PersonalAccounts::new_account_from_phrase);
-		delegate.add_method("personal_newAccountFromPhrase", Personal::new_account_from_phrase);
+		delegate.add_method("personal_newAccountFromWallet", PersonalAccounts::new_account_from_wallet);
-		delegate.add_method("personal_newAccountFromWallet", Personal::new_account_from_wallet);
+		delegate.add_method("personal_newAccountFromSecret", PersonalAccounts::new_account_from_secret);
-		delegate.add_method("personal_unlockAccount", Personal::unlock_account);
+		delegate.add_method("personal_unlockAccount", PersonalAccounts::unlock_account);
-		delegate.add_method("personal_testPassword", Personal::test_password);
+		delegate.add_method("personal_testPassword", PersonalAccounts::test_password);
-		delegate.add_method("personal_changePassword", Personal::change_password);
+		delegate.add_method("personal_changePassword", PersonalAccounts::change_password);
-		delegate.add_method("personal_signAndSendTransaction", Personal::sign_and_send_transaction);
+		delegate.add_method("personal_signAndSendTransaction", PersonalAccounts::sign_and_send_transaction);
-		delegate.add_method("personal_setAccountName", Personal::set_account_name);
+		delegate.add_method("personal_setAccountName", PersonalAccounts::set_account_name);
-		delegate.add_method("personal_setAccountMeta", Personal::set_account_meta);
+		delegate.add_method("personal_setAccountMeta", PersonalAccounts::set_account_meta);
-		delegate.add_method("personal_accountsInfo", Personal::accounts_info);
+		delegate.add_method("personal_importGethAccounts", PersonalAccounts::import_geth_accounts);
-		delegate.add_method("personal_listGethAccounts", Personal::geth_accounts);
+		delegate.add_method("personal_listGethAccounts", PersonalAccounts::geth_accounts);
-		delegate.add_method("personal_importGethAccounts", Personal::import_geth_accounts);
 
 		delegate
 	}
@@ -108,6 +124,7 @@ pub trait PersonalSigner: Sized + Send + Sync + 'static {
 		delegate.add_method("personal_confirmRequest", PersonalSigner::confirm_request);
 		delegate.add_method("personal_rejectRequest", PersonalSigner::reject_request);
 		delegate.add_method("personal_generateAuthorizationToken", PersonalSigner::generate_token);
+
 		delegate
 	}
 }

signer/Cargo.toml

@@ -23,7 +23,7 @@ ethcore-rpc = { path = "../rpc" }
 ethcore-devtools = { path = "../devtools" }
 parity-ui = { path = "../dapps/ui", version = "1.4", optional = true }
 
-clippy = { version = "0.0.90", optional = true}
+clippy = { version = "0.0.96", optional = true}
 
 [features]
 dev = ["clippy"]

signer/src/authcode_store.rs

@@ -99,6 +99,7 @@ impl<T: TimeProvider> AuthCodes<T> {
 	}
 
 	/// Checks if given hash is correct identifier of `SignerUI`
+	#[cfg_attr(feature="dev", allow(wrong_self_convention))]
 	pub fn is_valid(&mut self, hash: &H256, time: u64) -> bool {
 		let now = self.now.now();
 		// check time

sync/Cargo.toml

@@ -17,7 +17,7 @@ ethcore-network = { path = "../util/network" }
 ethcore-io = { path = "../util/io" }
 ethcore = { path = "../ethcore" }
 rlp = { path = "../util/rlp" }
-clippy = { version = "0.0.90", optional = true}
+clippy = { version = "0.0.96", optional = true}
 log = "0.3"
 env_logger = "0.3"
 time = "0.1.34"

sync/src/api.rs

@@ -34,7 +34,7 @@ use std::str::FromStr;
 use parking_lot::RwLock;
 use chain::{ETH_PACKET_COUNT, SNAPSHOT_SYNC_PACKET_COUNT};
 
-pub const WARP_SYNC_PROTOCOL_ID: ProtocolId = *b"bam";
+pub const WARP_SYNC_PROTOCOL_ID: ProtocolId = *b"par";
 
 /// Sync configuration
 #[derive(Debug, Clone, Copy)]

sync/src/blocks.rs

@@ -114,7 +114,7 @@ impl BlockCollection {
 
 	/// Insert a set of headers into collection and advance subchain head pointers.
 	pub fn insert_headers(&mut self, headers: Vec<Bytes>) {
-		for h in headers.into_iter() {
+		for h in headers {
 			if let Err(e) =  self.insert_header(h) {
 				trace!(target: "sync", "Ignored invalid header: {:?}", e);
 			}
@@ -125,7 +125,7 @@ impl BlockCollection {
 	/// Insert a collection of block bodies for previously downloaded headers.
 	pub fn insert_bodies(&mut self, bodies: Vec<Bytes>) -> usize {
 		let mut inserted = 0;
-		for b in bodies.into_iter() {
+		for b in bodies {
 			if let Err(e) =  self.insert_body(b) {
 				trace!(target: "sync", "Ignored invalid body: {:?}", e);
 			} else {
@@ -141,7 +141,7 @@ impl BlockCollection {
 			return 0;
 		}
 		let mut inserted = 0;
-		for r in receipts.into_iter() {
+		for r in receipts {
 			if let Err(e) =  self.insert_receipt(r) {
 				trace!(target: "sync", "Ignored invalid receipt: {:?}", e);
 			} else {

sync/src/chain.rs

@@ -381,7 +381,7 @@ impl ChainSync {
 	/// Returns information on peers connections
 	pub fn peers(&self, io: &SyncIo) -> Vec<PeerInfoDigest> {
 		self.peers.iter()
-			.filter_map(|(&peer_id, ref peer_data)|
+			.filter_map(|(&peer_id, peer_data)|
 				io.peer_session_info(peer_id).map(|session_info|
 					PeerInfoDigest {
 						id: session_info.id.map(|id| id.hex()),
@@ -1017,7 +1017,7 @@ impl ChainSync {
 			return;
 		}
 		let (peer_latest, peer_difficulty, peer_snapshot_number, peer_snapshot_hash) = {
-			if let Some(ref peer) = self.peers.get_mut(&peer_id) {
+			if let Some(peer) = self.peers.get_mut(&peer_id) {
 				if peer.asking != PeerAsking::Nothing || !peer.can_sync() {
 					return;
 				}
@@ -1142,6 +1142,7 @@ impl ChainSync {
 	}
 
 	/// Checks if there are blocks fully downloaded that can be imported into the blockchain and does the import.
+	#[cfg_attr(feature="dev", allow(block_in_if_condition_stmt))]
 	fn collect_blocks(&mut self, io: &mut SyncIo, block_set: BlockSet) {
 		match block_set {
 			BlockSet::NewBlocks => {
@@ -1150,9 +1151,9 @@ impl ChainSync {
 				}
 			},
 			BlockSet::OldBlocks => {
-				 if self.old_blocks.as_mut().map_or(false, |downloader| { downloader.collect_blocks(io, false) == Err(DownloaderImportError::Invalid) }) {
+				if self.old_blocks.as_mut().map_or(false, |downloader| { downloader.collect_blocks(io, false) == Err(DownloaderImportError::Invalid) }) {
-					 self.restart(io);
+					self.restart(io);
-				 } else if self.old_blocks.as_ref().map_or(false, |downloader| { downloader.is_complete() }) {
+				} else if self.old_blocks.as_ref().map_or(false, |downloader| { downloader.is_complete() }) {
 					trace!(target: "sync", "Background block download is complete");
 					self.old_blocks = None;
 				}
@@ -1242,7 +1243,7 @@ impl ChainSync {
 				return true;
 			}
 		}
-		return false;
+		false
 	}
 
 	/// Generic request sender
@@ -1370,7 +1371,7 @@ impl ChainSync {
 		while number <= last && count < max_count {
 			if let Some(hdr) = overlay.get(&number) {
 				trace!(target: "sync", "{}: Returning cached fork header", peer_id);
-				data.extend(hdr);
+				data.extend_from_slice(hdr);
 				count += 1;
 			} else if let Some(mut hdr) = io.chain().block_header(BlockID::Number(number)) {
 				data.append(&mut hdr);
@@ -1427,16 +1428,18 @@ impl ChainSync {
 		}
 		count = min(count, MAX_NODE_DATA_TO_SEND);
 		let mut added = 0usize;
-		let mut data = Bytes::new();
+		let mut data = Vec::new();
 		for i in 0..count {
-			if let Some(mut hdr) = io.chain().state_data(&try!(r.val_at::<H256>(i))) {
+			if let Some(hdr) = io.chain().state_data(&try!(r.val_at::<H256>(i))) {
-				data.append(&mut hdr);
+				data.push(hdr);
 				added += 1;
 			}
 		}
 		trace!(target: "sync", "{} -> GetNodeData: return {} entries", peer_id, added);
 		let mut rlp = RlpStream::new_list(added);
-		rlp.append_raw(&data, added);
+		for d in data.into_iter() {
+			rlp.append(&d);
+		}
 		Ok(Some((NODE_DATA_PACKET, rlp)))
 	}
 
@@ -1707,7 +1710,7 @@ impl ChainSync {
 					self.send_packet(io, *peer_id, NEW_BLOCK_PACKET, rlp);
 				}
 			}
-			if let Some(ref mut peer) = self.peers.get_mut(&peer_id) {
+			if let Some(ref mut peer) = self.peers.get_mut(peer_id) {
 				peer.latest_hash = chain_info.best_block_hash.clone();
 			}
 			sent += 1;
@@ -1725,7 +1728,7 @@ impl ChainSync {
 			sent += match ChainSync::create_new_hashes_rlp(io.chain(), &last_parent, &chain_info.best_block_hash) {
 				Some(rlp) => {
 					{
-						if let Some(ref mut peer) = self.peers.get_mut(&peer_id) {
+						if let Some(ref mut peer) = self.peers.get_mut(peer_id) {
 							peer.latest_hash = chain_info.best_block_hash.clone();
 						}
 					}
@@ -1793,7 +1796,7 @@ impl ChainSync {
 		// Send RLPs
 		let sent = lucky_peers.len();
 		if sent > 0 {
-			for (peer_id, rlp) in lucky_peers.into_iter() {
+			for (peer_id, rlp) in lucky_peers {
 				self.send_packet(io, peer_id, TRANSACTIONS_PACKET, rlp);
 			}
 
@@ -2025,7 +2028,9 @@ mod tests {
 		assert!(rlp_result.is_some());
 
 		// the length of one rlp-encoded hashe
-		assert_eq!(34, rlp_result.unwrap().1.out().len());
+		let rlp = rlp_result.unwrap().1.out();
+		let rlp = Rlp::new(&rlp);
+		assert_eq!(1, rlp.item_count());
 
 		io.sender = Some(2usize);
 

sync/src/tests/snapshot.rs

@@ -23,6 +23,7 @@ use super::helpers::*;
 pub struct TestSnapshotService {
 	manifest: Option<ManifestData>,
 	chunks: HashMap<H256, Bytes>,
+	canon_hashes: Mutex<HashMap<u64, H256>>,
 
 	restoration_manifest: Mutex<Option<ManifestData>>,
 	state_restoration_chunks: Mutex<HashMap<H256, Bytes>>,
@@ -34,6 +35,7 @@ impl TestSnapshotService {
 		TestSnapshotService {
 			manifest: None,
 			chunks: HashMap::new(),
+			canon_hashes: Mutex::new(HashMap::new()),
 			restoration_manifest: Mutex::new(None),
 			state_restoration_chunks: Mutex::new(HashMap::new()),
 			block_restoration_chunks: Mutex::new(HashMap::new()),
@@ -57,6 +59,7 @@ impl TestSnapshotService {
 		TestSnapshotService {
 			manifest: Some(manifest),
 			chunks: chunks,
+			canon_hashes: Mutex::new(HashMap::new()),
 			restoration_manifest: Mutex::new(None),
 			state_restoration_chunks: Mutex::new(HashMap::new()),
 			block_restoration_chunks: Mutex::new(HashMap::new()),
@@ -110,6 +113,10 @@ impl SnapshotService for TestSnapshotService {
 			self.block_restoration_chunks.lock().insert(hash, chunk);
 		}
 	}
+
+	fn provide_canon_hashes(&self, hashes: &[(u64, H256)]) {
+		self.canon_hashes.lock().extend(hashes.iter().cloned());
+	}
 }
 
 #[test]

util/Cargo.toml

@@ -23,7 +23,7 @@ rlp = { path = "rlp" }
 heapsize = { version = "0.3", features = ["unstable"] }
 itertools = "0.4"
 sha3 = { path = "sha3" }
-clippy = { version = "0.0.90", optional = true}
+clippy = { version = "0.0.96", optional = true}
 ethcore-devtools = { path = "../devtools" }
 libc = "0.2.7"
 vergen = "0.1"
@@ -36,6 +36,7 @@ ansi_term = "0.7"
 tiny-keccak= "1.0"
 ethcore-bloom-journal = { path = "bloom" }
 regex = "0.1"
+lru-cache = "0.1.0"
 
 [features]
 default = []

util/network/Cargo.toml

@@ -14,7 +14,7 @@ time = "0.1.34"
 tiny-keccak = "1.0"
 rust-crypto = "0.2.34"
 slab = "0.2"
-clippy = { version = "0.0.90", optional = true}
+clippy = { version = "0.0.96", optional = true}
 igd = "0.5.0"
 libc = "0.2.7"
 parking_lot = "0.3"

util/network/src/session.rs

@@ -395,7 +395,7 @@ impl Session {
 			PACKET_PEERS => Ok(SessionData::None),
 			PACKET_USER ... PACKET_LAST => {
 				let mut i = 0usize;
-				while packet_id > self.info.capabilities[i].id_offset + self.info.capabilities[i].packet_count {
+				while packet_id >= self.info.capabilities[i].id_offset + self.info.capabilities[i].packet_count {
 					i += 1;
 					if i == self.info.capabilities.len() {
 						debug!(target: "network", "Unknown packet: {:?}", packet_id);
@@ -406,6 +406,7 @@ impl Session {
 				// map to protocol
 				let protocol = self.info.capabilities[i].protocol;
 				let pid = packet_id - self.info.capabilities[i].id_offset;
+				trace!(target: "network", "Packet {} mapped to {:?}:{}, i={}, capabilities={:?}", packet_id, protocol, pid, i, self.info.capabilities);
 				Ok(SessionData::Packet { data: packet.data, protocol: protocol, packet_id: pid } )
 			},
 			_ => {

util/src/cache.rs

@@ -0,0 +1,79 @@
+// 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/>.
+
+//! Lru-cache related utilities as quick-and-dirty wrappers around the lru-cache
+//! crate.
+// TODO: push changes upstream in a clean way.
+
+use heapsize::HeapSizeOf;
+use lru_cache::LruCache;
+
+use std::hash::Hash;
+
+const INITIAL_CAPACITY: usize = 4;
+
+/// An LRU-cache which operates on memory used.
+pub struct MemoryLruCache<K: Eq + Hash, V: HeapSizeOf> {
+	inner: LruCache<K, V>,
+	cur_size: usize,
+	max_size: usize,
+}
+
+impl<K: Eq + Hash, V: HeapSizeOf> MemoryLruCache<K, V> {
+	/// Create a new cache with a maximum size in bytes.
+	pub fn new(max_size: usize) -> Self {
+		MemoryLruCache {
+			inner: LruCache::new(INITIAL_CAPACITY),
+			max_size: max_size,
+			cur_size: 0,
+		}
+	}
+
+	/// Insert an item.
+	pub fn insert(&mut self, key: K, val: V) {
+		let cap = self.inner.capacity();
+
+		// grow the cache as necessary; it operates on amount of items
+		// but we're working based on memory usage.
+		if self.inner.len() == cap && self.cur_size < self.max_size {
+			self.inner.set_capacity(cap * 2);
+		}
+
+		// account for any element displaced from the cache.
+		if let Some(lru) = self.inner.insert(key, val) {
+			self.cur_size -= lru.heap_size_of_children();
+		}
+
+		// remove elements until we are below the memory target.
+		while self.cur_size > self.max_size {
+			match self.inner.remove_lru() {
+				Some((_, v)) => self.cur_size -= v.heap_size_of_children(),
+				_ => break,
+			}
+		}
+	}
+
+	/// Get a reference to an item in the cache. It is a logic error for its
+	/// heap size to be altered while borrowed.
+	pub fn get_mut(&mut self, key: &K) -> Option<&mut V> {
+		self.inner.get_mut(key)
+	}
+
+	/// Currently-used size of values in bytes.
+	pub fn current_size(&self) -> usize {
+		self.cur_size
+	}
+}

util/src/journaldb/archivedb.rs

@@ -78,7 +78,7 @@ impl HashDB for ArchiveDB {
 			ret.insert(h, 1);
 		}
 
-		for (key, refs) in self.overlay.keys().into_iter() {
+		for (key, refs) in self.overlay.keys() {
 			let refs = *ret.get(&key).unwrap_or(&0) + refs;
 			ret.insert(key, refs);
 		}
@@ -152,7 +152,7 @@ impl JournalDB for ArchiveDB {
 		let mut inserts = 0usize;
 		let mut deletes = 0usize;
 
-		for i in self.overlay.drain().into_iter() {
+		for i in self.overlay.drain() {
 			let (key, (value, rc)) = i;
 			if rc > 0 {
 				batch.put(self.column, &key, &value);
@@ -164,7 +164,7 @@ impl JournalDB for ArchiveDB {
 			}
 		}
 
-		for (mut key, value) in self.overlay.drain_aux().into_iter() {
+		for (mut key, value) in self.overlay.drain_aux() {
 			key.push(AUX_FLAG);
 			batch.put(self.column, &key, &value);
 		}
@@ -185,7 +185,7 @@ impl JournalDB for ArchiveDB {
 		let mut inserts = 0usize;
 		let mut deletes = 0usize;
 
-		for i in self.overlay.drain().into_iter() {
+		for i in self.overlay.drain() {
 			let (key, (value, rc)) = i;
 			if rc > 0 {
 				if try!(self.backing.get(self.column, &key)).is_some() {
@@ -204,7 +204,7 @@ impl JournalDB for ArchiveDB {
 			}
 		}
 
-		for (mut key, value) in self.overlay.drain_aux().into_iter() {
+		for (mut key, value) in self.overlay.drain_aux() {
 			key.push(AUX_FLAG);
 			batch.put(self.column, &key, &value);
 		}

util/src/journaldb/earlymergedb.rs

@@ -63,9 +63,11 @@ enum RemoveFrom {
 /// the removals actually take effect.
 ///
 /// journal format:
+/// ```
 /// [era, 0] => [ id, [insert_0, ...], [remove_0, ...] ]
 /// [era, 1] => [ id, [insert_0, ...], [remove_0, ...] ]
 /// [era, n] => [ ... ]
+/// ```
 ///
 /// When we make a new commit, we make a journal of all blocks in the recent history and record
 /// all keys that were inserted and deleted. The journal is ordered by era; multiple commits can
@@ -80,6 +82,7 @@ enum RemoveFrom {
 /// which includes an original key, if any.
 ///
 /// The semantics of the `counter` are:
+/// ```
 /// insert key k:
 ///   counter already contains k: count += 1
 ///   counter doesn't contain k:
@@ -91,9 +94,11 @@ enum RemoveFrom {
 ///     count == 1: remove counter
 ///     count == 0: remove key from backing db
 ///   counter doesn't contain k: remove key from backing db
+/// ```
 ///
 /// Practically, this means that for each commit block turning from recent to ancient we do the
 /// following:
+/// ```
 /// is_canonical:
 ///   inserts: Ignored (left alone in the backing database).
 ///   deletes: Enacted; however, recent history queue is checked for ongoing references. This is
@@ -102,8 +107,9 @@ enum RemoveFrom {
 ///   inserts: Reverted; however, recent history queue is checked for ongoing references. This is
 ///            reduced as a preference to deletion from the backing database.
 ///   deletes: Ignored (they were never inserted).
+/// ```
 ///
-/// TODO: store_reclaim_period
+/// TODO: `store_reclaim_period`
 pub struct EarlyMergeDB {
 	overlay: MemoryDB,
 	backing: Arc<Database>,
@@ -310,7 +316,7 @@ impl HashDB for EarlyMergeDB {
 			ret.insert(h, 1);
 		}
 
-		for (key, refs) in self.overlay.keys().into_iter() {
+		for (key, refs) in self.overlay.keys() {
 			let refs = *ret.get(&key).unwrap_or(&0) + refs;
 			ret.insert(key, refs);
 		}

util/src/journaldb/overlayrecentdb.rs

@@ -379,7 +379,7 @@ impl HashDB for OverlayRecentDB {
 			ret.insert(h, 1);
 		}
 
-		for (key, refs) in self.transaction_overlay.keys().into_iter() {
+		for (key, refs) in self.transaction_overlay.keys() {
 			let refs = *ret.get(&key).unwrap_or(&0) + refs;
 			ret.insert(key, refs);
 		}

util/src/journaldb/refcounteddb.rs

@@ -36,12 +36,14 @@ use std::env;
 /// the removals actually take effect.
 ///
 /// journal format:
+/// ```
 /// [era, 0] => [ id, [insert_0, ...], [remove_0, ...] ]
 /// [era, 1] => [ id, [insert_0, ...], [remove_0, ...] ]
 /// [era, n] => [ ... ]
+/// ```
 ///
 /// when we make a new commit, we journal the inserts and removes.
-/// for each end_era that we journaled that we are no passing by,
+/// for each `end_era` that we journaled that we are no passing by,
 /// we remove all of its removes assuming it is canonical and all
 /// of its inserts otherwise.
 // TODO: store last_era, reclaim_period.