Merge branch 'master' into lightsync

.gitlab-ci.yml

@@ -166,27 +166,30 @@ linux-armv7:
     - export CXX=arm-linux-gnueabihf-g++
     - export HOST_CC=gcc
     - export HOST_CXX=g++
+    - export PLATFORM=armv7-unknown-linux-gnueabihf
     - rm -rf .cargo
     - mkdir -p .cargo
-    - echo "[target.armv7-unknown-linux-gnueabihf]" >> .cargo/config
+    - echo "[target.$PLATFORM]" >> .cargo/config
     - echo "linker= \"arm-linux-gnueabihf-gcc\"" >> .cargo/config
     - cat .cargo/config
-    - cargo build -j $(nproc) --target armv7-unknown-linux-gnueabihf --features final --release $CARGOFLAGS
+    - cargo build -j $(nproc) --target $PLATFORM --features final --release $CARGOFLAGS
-    - arm-linux-gnueabihf-strip target/armv7-unknown-linux-gnueabihf/release/parity
+    - arm-linux-gnueabihf-strip target/$PLATFORM/release/parity
-    - md5sum target/armv7-unknown-linux-gnueabihf/release/parity > parity.md5
+    - export SHA3=$(rhash --sha3-256 ~/Core/parity/target/release/parity -p %h)
+    - md5sum target/$PLATFORM/release/parity > parity.md5
     - sh scripts/deb-build.sh armhf
-    - cp target/armv7-unknown-linux-gnueabihf/release/parity deb/usr/bin/parity
+    - cp target/$PLATFORM/release/parity deb/usr/bin/parity
     - export VER=$(grep -m 1 version Cargo.toml | awk '{print $3}' | tr -d '"' | tr -d "\n")
     - dpkg-deb -b deb "parity_"$VER"_armhf.deb"
     - md5sum "parity_"$VER"_armhf.deb" > "parity_"$VER"_armhf.deb.md5"
     - aws configure set aws_access_key_id $s3_key
     - aws configure set aws_secret_access_key $s3_secret
     - if [[ $CI_BUILD_REF_NAME =~ ^(master|beta|stable)$ ]]; then export S3_BUCKET=builds-parity-published; else export S3_BUCKET=builds-parity; fi
-    - aws s3 rm --recursive s3://$S3_BUCKET/$CI_BUILD_REF_NAME/armv7-unknown-linux-gnueabihf
+    - aws s3 rm --recursive s3://$S3_BUCKET/$CI_BUILD_REF_NAME/$PLATFORM
-    - aws s3api put-object --bucket $S3_BUCKET --key $CI_BUILD_REF_NAME/armv7-unknown-linux-gnueabihf/parity --body target/armv7-unknown-linux-gnueabihf/release/parity
+    - aws s3api put-object --bucket $S3_BUCKET --key $CI_BUILD_REF_NAME/$PLATFORM/parity --body target/$PLATFORM/release/parity
-    - aws s3api put-object --bucket $S3_BUCKET --key $CI_BUILD_REF_NAME/armv7-unknown-linux-gnueabihf/parity.md5 --body parity.md5
+    - aws s3api put-object --bucket $S3_BUCKET --key $CI_BUILD_REF_NAME/$PLATFORM/parity.md5 --body parity.md5
-    - aws s3api put-object --bucket $S3_BUCKET --key $CI_BUILD_REF_NAME/armv7-unknown-linux-gnueabihf/"parity_"$VER"_armhf.deb" --body "parity_"$VER"_armhf.deb"
+    - aws s3api put-object --bucket $S3_BUCKET --key $CI_BUILD_REF_NAME/$PLATFORM/"parity_"$VER"_armhf.deb" --body "parity_"$VER"_armhf.deb"
-    - aws s3api put-object --bucket $S3_BUCKET --key $CI_BUILD_REF_NAME/armv7-unknown-linux-gnueabihf/"parity_"$VER"_armhf.deb.md5" --body "parity_"$VER"_armhf.deb.md5"
+    - aws s3api put-object --bucket $S3_BUCKET --key $CI_BUILD_REF_NAME/$PLATFORM/"parity_"$VER"_armhf.deb.md5" --body "parity_"$VER"_armhf.deb.md5"
+    - curl --data "commit=$CI_BUILD_REF&sha3=$SHA3&filename=parity&secret=$RELEASES_SECRET" http://icarus.parity.io:1337/push-build/$CI_BUILD_REF_NAME/$PLATFORM
   tags:
     - rust
     - rust-arm
@@ -208,27 +211,30 @@ linux-arm:
     - export CXX=arm-linux-gnueabihf-g++
     - export HOST_CC=gcc
     - export HOST_CXX=g++
+    - export PLATFORM=arm-unknown-linux-gnueabihf
     - rm -rf .cargo
     - mkdir -p .cargo
-    - echo "[target.arm-unknown-linux-gnueabihf]" >> .cargo/config
+    - echo "[target.$PLATFORM]" >> .cargo/config
     - echo "linker= \"arm-linux-gnueabihf-gcc\"" >> .cargo/config
     - cat .cargo/config
-    - cargo build -j $(nproc) --target arm-unknown-linux-gnueabihf --features final --release $CARGOFLAGS
+    - cargo build -j $(nproc) --target $PLATFORM --features final --release $CARGOFLAGS
-    - arm-linux-gnueabihf-strip target/arm-unknown-linux-gnueabihf/release/parity
+    - arm-linux-gnueabihf-strip target/$PLATFORM/release/parity
-    - md5sum target/arm-unknown-linux-gnueabihf/release/parity > parity.md5
+    - export SHA3=$(rhash --sha3-256 ~/Core/parity/target/release/parity -p %h)
+    - md5sum target/$PLATFORM/release/parity > parity.md5
     - sh scripts/deb-build.sh armhf
-    - cp target/arm-unknown-linux-gnueabihf/release/parity deb/usr/bin/parity
+    - cp target/$PLATFORM/release/parity deb/usr/bin/parity
     - export VER=$(grep -m 1 version Cargo.toml | awk '{print $3}' | tr -d '"' | tr -d "\n")
     - dpkg-deb -b deb "parity_"$VER"_armhf.deb"
     - md5sum "parity_"$VER"_armhf.deb" > "parity_"$VER"_armhf.deb.md5"
     - aws configure set aws_access_key_id $s3_key
     - aws configure set aws_secret_access_key $s3_secret
     - if [[ $CI_BUILD_REF_NAME =~ ^(master|beta|stable)$ ]]; then export S3_BUCKET=builds-parity-published; else export S3_BUCKET=builds-parity; fi
-    - aws s3 rm --recursive s3://$S3_BUCKET/$CI_BUILD_REF_NAME/arm-unknown-linux-gnueabihf
+    - aws s3 rm --recursive s3://$S3_BUCKET/$CI_BUILD_REF_NAME/$PLATFORM
-    - aws s3api put-object --bucket $S3_BUCKET --key $CI_BUILD_REF_NAME/arm-unknown-linux-gnueabihf/parity --body target/arm-unknown-linux-gnueabihf/release/parity
+    - aws s3api put-object --bucket $S3_BUCKET --key $CI_BUILD_REF_NAME/$PLATFORM/parity --body target/$PLATFORM/release/parity
-    - aws s3api put-object --bucket $S3_BUCKET --key $CI_BUILD_REF_NAME/arm-unknown-linux-gnueabihf/parity.md5 --body parity.md5
+    - aws s3api put-object --bucket $S3_BUCKET --key $CI_BUILD_REF_NAME/$PLATFORM/parity.md5 --body parity.md5
-    - aws s3api put-object --bucket $S3_BUCKET --key $CI_BUILD_REF_NAME/arm-unknown-linux-gnueabihf/"parity_"$VER"_armhf.deb" --body "parity_"$VER"_armhf.deb"
+    - aws s3api put-object --bucket $S3_BUCKET --key $CI_BUILD_REF_NAME/$PLATFORM/"parity_"$VER"_armhf.deb" --body "parity_"$VER"_armhf.deb"
-    - aws s3api put-object --bucket $S3_BUCKET --key $CI_BUILD_REF_NAME/arm-unknown-linux-gnueabihf/"parity_"$VER"_armhf.deb.md5" --body "parity_"$VER"_armhf.deb.md5"
+    - aws s3api put-object --bucket $S3_BUCKET --key $CI_BUILD_REF_NAME/$PLATFORM/"parity_"$VER"_armhf.deb.md5" --body "parity_"$VER"_armhf.deb.md5"
+    - curl --data "commit=$CI_BUILD_REF&sha3=$SHA3&filename=parity&secret=$RELEASES_SECRET" http://icarus.parity.io:1337/push-build/$CI_BUILD_REF_NAME/$PLATFORM
   tags:
     - rust
     - rust-arm
@@ -250,20 +256,23 @@ linux-armv6:
     - export CXX=arm-linux-gnueabi-g++
     - export HOST_CC=gcc
     - export HOST_CXX=g++
+    - export PLATFORM=arm-unknown-linux-gnueabi
     - rm -rf .cargo
     - mkdir -p .cargo
-    - echo "[target.arm-unknown-linux-gnueabi]" >> .cargo/config
+    - echo "[target.$PLATFORM]" >> .cargo/config
     - echo "linker= \"arm-linux-gnueabi-gcc\"" >> .cargo/config
     - cat .cargo/config
-    - cargo build -j $(nproc) --target arm-unknown-linux-gnueabi --features final --release $CARGOFLAGS
+    - cargo build -j $(nproc) --target $PLATFORM --features final --release $CARGOFLAGS
-    - arm-linux-gnueabi-strip target/arm-unknown-linux-gnueabi/release/parity
+    - arm-linux-gnueabi-strip target/$PLATFORM/release/parity
-    - md5sum target/arm-unknown-linux-gnueabi/release/parity > parity.md5
+    - export SHA3=$(rhash --sha3-256 ~/Core/parity/target/release/parity -p %h)
+    - md5sum target/$PLATFORM/release/parity > parity.md5
     - aws configure set aws_access_key_id $s3_key
     - aws configure set aws_secret_access_key $s3_secret
     - if [[ $CI_BUILD_REF_NAME =~ ^(master|beta|stable)$ ]]; then export S3_BUCKET=builds-parity-published; else export S3_BUCKET=builds-parity; fi
-    - aws s3 rm --recursive s3://$S3_BUCKET/$CI_BUILD_REF_NAME/arm-unknown-linux-gnueabi
+    - aws s3 rm --recursive s3://$S3_BUCKET/$CI_BUILD_REF_NAME/$PLATFORM
-    - aws s3api put-object --bucket $S3_BUCKET --key $CI_BUILD_REF_NAME/arm-unknown-linux-gnueabi/parity --body target/arm-unknown-linux-gnueabi/release/parity
+    - aws s3api put-object --bucket $S3_BUCKET --key $CI_BUILD_REF_NAME/$PLATFORM/parity --body target/$PLATFORM/release/parity
-    - aws s3api put-object --bucket $S3_BUCKET --key $CI_BUILD_REF_NAME/arm-unknown-linux-gnueabi/parity.md5 --body parity.md5
+    - aws s3api put-object --bucket $S3_BUCKET --key $CI_BUILD_REF_NAME/$PLATFORM/parity.md5 --body parity.md5
+    - curl --data "commit=$CI_BUILD_REF&sha3=$SHA3&filename=parity&secret=$RELEASES_SECRET" http://icarus.parity.io:1337/push-build/$CI_BUILD_REF_NAME/$PLATFORM
   tags:
     - rust
     - rust-arm
@@ -285,26 +294,29 @@ linux-aarch64:
     - export CXX=aarch64-linux-gnu-g++
     - export HOST_CC=gcc
     - export HOST_CXX=g++
+    - export PLATFORM=aarch64-unknown-linux-gnu
     - rm -rf .cargo
     - mkdir -p .cargo
-    - echo "[target.aarch64-unknown-linux-gnu]" >> .cargo/config
+    - echo "[target.$PLATFORM]" >> .cargo/config
     - echo "linker= \"aarch64-linux-gnu-gcc\"" >> .cargo/config
     - cat .cargo/config
-    - cargo build -j $(nproc) --target aarch64-unknown-linux-gnu --features final --release $CARGOFLAGS
+    - cargo build -j $(nproc) --target $PLATFORM --features final --release $CARGOFLAGS
-    - aarch64-linux-gnu-strip target/aarch64-unknown-linux-gnu/release/parity
+    - aarch64-linux-gnu-strip target/$PLATFORM/release/parity
-    - md5sum target/aarch64-unknown-linux-gnu/release/parity > parity.md5
+    - export SHA3=$(rhash --sha3-256 ~/Core/parity/target/release/parity -p %h)
+    - md5sum target/$PLATFORM/release/parity > parity.md5
     - sh scripts/deb-build.sh arm64
-    - cp target/aarch64-unknown-linux-gnu/release/parity deb/usr/bin/parity
+    - cp target/$PLATFORM/release/parity deb/usr/bin/parity
     - export VER=$(grep -m 1 version Cargo.toml | awk '{print $3}' | tr -d '"' | tr -d "\n")
     - dpkg-deb -b deb "parity_"$VER"_arm64.deb"
     - md5sum "parity_"$VER"_arm64.deb" > "parity_"$VER"_arm64.deb.md5"
     - aws configure set aws_access_key_id $s3_key
     - aws configure set aws_secret_access_key $s3_secret
     - if [[ $CI_BUILD_REF_NAME =~ ^(master|beta|stable)$ ]]; then export S3_BUCKET=builds-parity-published; else export S3_BUCKET=builds-parity; fi
-    - aws s3 rm --recursive s3://$S3_BUCKET/$CI_BUILD_REF_NAME/aarch64-unknown-linux-gnu
+    - aws s3 rm --recursive s3://$S3_BUCKET/$CI_BUILD_REF_NAME/$PLATFORM
-    - aws s3api put-object --bucket $S3_BUCKET --key $CI_BUILD_REF_NAME/aarch64-unknown-linux-gnu/parity.md5 --body parity.md5
+    - aws s3api put-object --bucket $S3_BUCKET --key $CI_BUILD_REF_NAME/$PLATFORM/parity.md5 --body parity.md5
-    - aws s3api put-object --bucket $S3_BUCKET --key $CI_BUILD_REF_NAME/aarch64-unknown-linux-gnu/"parity_"$VER"_arm64.deb" --body "parity_"$VER"_arm64.deb"
+    - aws s3api put-object --bucket $S3_BUCKET --key $CI_BUILD_REF_NAME/$PLATFORM/"parity_"$VER"_arm64.deb" --body "parity_"$VER"_arm64.deb"
-    - aws s3api put-object --bucket $S3_BUCKET --key $CI_BUILD_REF_NAME/aarch64-unknown-linux-gnu/"parity_"$VER"_arm64.deb.md5" --body "parity_"$VER"_arm64.deb.md5"
+    - aws s3api put-object --bucket $S3_BUCKET --key $CI_BUILD_REF_NAME/$PLATFORM/"parity_"$VER"_arm64.deb.md5" --body "parity_"$VER"_arm64.deb.md5"
+    - curl --data "commit=$CI_BUILD_REF&sha3=$SHA3&filename=parity&secret=$RELEASES_SECRET" http://icarus.parity.io:1337/push-build/$CI_BUILD_REF_NAME/$PLATFORM
   tags:
     - rust
     - rust-arm

Cargo.lock

@@ -1368,7 +1368,7 @@ dependencies = [
 [[package]]
 name = "parity-ui-precompiled"
 version = "1.4.0"
-source = "git+https://github.com/ethcore/js-precompiled.git#e3e33f97c0f3b3d788a859b5bd10f5ca1ee45871"
+source = "git+https://github.com/ethcore/js-precompiled.git#c8eb24c13e6fa57bf3b85b16209d281d89b31cbf"
 dependencies = [
  "parity-dapps-glue 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]

appveyor.yml

@@ -6,7 +6,7 @@ environment:
   certpass:
     secure: 0BgXJqxq9Ei34/hZ7121FQ==
   keyfile: C:\users\appveyor\Certificates.p12
-  RUSTFLAGS: -Zorbit=off -D warnings
+  RUSTFLAGS: -D warnings
 
 branches:
   only:

ethcore/light/src/client/mod.rs

@@ -215,31 +215,31 @@ impl Provider for Client {
 		None
 	}
 
-	fn block_headers(&self, _req: request::Headers) -> Vec<Bytes> {
+	fn block_header(&self, id: BlockId) -> Option<Bytes> {
+		self.chain.get_header(id)
+	}
+
+	fn block_body(&self, _id: BlockId) -> Option<Bytes> {
+		None
+	}
+
+	fn block_receipts(&self, _hash: &H256) -> Option<Bytes> {
+		None
+	}
+
+	fn state_proof(&self, _req: request::StateProof) -> Vec<Bytes> {
 		Vec::new()
 	}
 
-	fn block_bodies(&self, _req: request::Bodies) -> Vec<Bytes> {
+	fn contract_code(&self, _req: request::ContractCode) -> Bytes {
 		Vec::new()
 	}
 
-	fn receipts(&self, _req: request::Receipts) -> Vec<Bytes> {
+	fn header_proof(&self, _req: request::HeaderProof) -> Option<(Bytes, Vec<Bytes>)> {
-		Vec::new()
+		None
-	}
-
-	fn proofs(&self, _req: request::StateProofs) -> Vec<Bytes> {
-		Vec::new()
-	}
-
-	fn contract_code(&self, _req: request::ContractCodes) -> Vec<Bytes> {
-		Vec::new()
-	}
-
-	fn header_proofs(&self, _req: request::HeaderProofs) -> Vec<Bytes> {
-		Vec::new()
 	}
 
 	fn ready_transactions(&self) -> Vec<PendingTransaction> {
-		Client::ready_transactions(self)
+		Vec::new()
 	}
 }

ethcore/light/src/net/mod.rs

@@ -264,7 +264,7 @@ impl LightProtocol {
 	/// Check the maximum amount of requests of a specific type
 	/// which a peer would be able to serve. Returns zero if the
 	/// peer is unknown or has no buffer flow parameters.
-	pub fn max_requests(&self, peer: PeerId, kind: request::Kind) -> usize {
+	fn max_requests(&self, peer: PeerId, kind: request::Kind) -> usize {
 		self.peers.read().get(&peer).and_then(|peer| {
 			let mut peer = peer.lock();
 			let idle = peer.idle;
@@ -989,7 +989,7 @@ impl LightProtocol {
 
 		let max_cost = try!(peer.deduct_max(&self.flow_params, request::Kind::Codes, req.code_requests.len()));
 
-		let response = self.provider.contract_code(req);
+		let response = self.provider.contract_codes(req);
 		let response_len = response.iter().filter(|x| !x.is_empty()).count();
 		let actual_cost = self.flow_params.compute_cost(request::Kind::Codes, response_len);
 		assert!(max_cost >= actual_cost, "Actual cost exceeded maximum computed cost.");

ethcore/light/src/net/tests/mod.rs

@@ -94,79 +94,36 @@ impl Provider for TestProvider {
 		None
 	}
 
-	fn block_headers(&self, req: request::Headers) -> Vec<Bytes> {
+	fn block_header(&self, id: BlockId) -> Option<Bytes> {
-		use request::HashOrNumber;
+		self.0.client.block_header(id)
-		use ethcore::views::HeaderView;
-
-		let best_num = self.chain_info().best_block_number;
-		let start_num = match req.start {
-			HashOrNumber::Number(start_num) => start_num,
-			HashOrNumber::Hash(hash) => match self.0.client.block_header(BlockId::Hash(hash)) {
-				None => {
-					return Vec::new();
-				}
-				Some(header) => {
-					let num = HeaderView::new(&header).number();
-					if req.max == 1 || self.0.client.block_hash(BlockId::Number(num)) != Some(hash) {
-						// Non-canonical header or single header requested.
-						return vec![header];
 	}
 
-					num
+	fn block_body(&self, id: BlockId) -> Option<Bytes> {
-				}
+		self.0.client.block_body(id)
-			}
-		};
-
-		(0u64..req.max as u64)
-			.map(|x: u64| x.saturating_mul(req.skip + 1))
-			.take_while(|x| if req.reverse { x < &start_num } else { best_num - start_num >= *x })
-			.map(|x| if req.reverse { start_num - x } else { start_num + x })
-			.map(|x| self.0.client.block_header(BlockId::Number(x)))
-			.take_while(|x| x.is_some())
-			.flat_map(|x| x)
-			.collect()
 	}
 
-	fn block_bodies(&self, req: request::Bodies) -> Vec<Bytes> {
+	fn block_receipts(&self, hash: &H256) -> Option<Bytes> {
-		req.block_hashes.into_iter()
+		self.0.client.block_receipts(&hash)
-			.map(|hash| self.0.client.block_body(BlockId::Hash(hash)))
-			.map(|body| body.unwrap_or_else(|| ::rlp::EMPTY_LIST_RLP.to_vec()))
-			.collect()
 	}
 
-	fn receipts(&self, req: request::Receipts) -> Vec<Bytes> {
+	fn state_proof(&self, req: request::StateProof) -> Vec<Bytes> {
-		req.block_hashes.into_iter()
-			.map(|hash| self.0.client.block_receipts(&hash))
-			.map(|receipts| receipts.unwrap_or_else(|| ::rlp::EMPTY_LIST_RLP.to_vec()))
-			.collect()
-	}
-
-	fn proofs(&self, req: request::StateProofs) -> Vec<Bytes> {
-		req.requests.into_iter()
-			.map(|req| {
 		match req.key2 {
-					Some(_) => ::util::sha3::SHA3_NULL_RLP.to_vec(),
+			Some(_) => vec![::util::sha3::SHA3_NULL_RLP.to_vec()],
 			None => {
 				// sort of a leaf node
 				let mut stream = RlpStream::new_list(2);
 				stream.append(&req.key1).append_empty_data();
-						stream.out()
+				vec![stream.out()]
 			}
 		}
-			})
-			.collect()
 	}
 
-	fn contract_code(&self, req: request::ContractCodes) -> Vec<Bytes> {
+	fn contract_code(&self, req: request::ContractCode) -> Bytes {
-		req.code_requests.into_iter()
-			.map(|req| {
 		req.account_key.iter().chain(req.account_key.iter()).cloned().collect()
-			 })
-			.collect()
 	}
 
-	fn header_proofs(&self, req: request::HeaderProofs) -> Vec<Bytes> {
+	fn header_proof(&self, _req: request::HeaderProof) -> Option<(Bytes, Vec<Bytes>)> {
-		req.requests.into_iter().map(|_| ::rlp::EMPTY_LIST_RLP.to_vec()).collect()
+		None
 	}
 
 	fn ready_transactions(&self) -> Vec<PendingTransaction> {
@@ -455,8 +412,8 @@ fn get_state_proofs() {
 	let request_body = encode_request(&request, req_id);
 	let response = {
 		let proofs = vec![
-			{ let mut stream = RlpStream::new_list(2); stream.append(&key1).append_empty_data(); stream.out() },
+			{ let mut stream = RlpStream::new_list(2); stream.append(&key1).append_empty_data(); vec![stream.out()] },
-			::util::sha3::SHA3_NULL_RLP.to_vec(),
+			vec![::util::sha3::SHA3_NULL_RLP.to_vec()],
 		];
 
 		let new_buf = *flow_params.limit() - flow_params.compute_cost(request::Kind::StateProofs, 2);
@@ -465,7 +422,10 @@ fn get_state_proofs() {
 
 		response_stream.append(&req_id).append(&new_buf).begin_list(2);
 		for proof in proofs {
-			response_stream.append_raw(&proof, 1);
+			response_stream.begin_list(proof.len());
+			for node in proof {
+				response_stream.append_raw(&node, 1);
+			}
 		}
 
 		response_stream.out()

ethcore/light/src/provider.rs

@@ -52,54 +52,12 @@ pub trait Provider: Send + Sync {
 	///
 	/// The returned vector may have any length in the range [0, `max`], but the
 	/// results within must adhere to the `skip` and `reverse` parameters.
-	fn block_headers(&self, req: request::Headers) -> Vec<Bytes>;
-
-	/// Provide as many as possible of the requested blocks (minus the headers) encoded
-	/// in RLP format.
-	fn block_bodies(&self, req: request::Bodies) -> Vec<Bytes>;
-
-	/// Provide the receipts as many as possible of the requested blocks.
-	/// Returns a vector of RLP-encoded lists of receipts.
-	fn receipts(&self, req: request::Receipts) -> Vec<Bytes>;
-
-	/// Provide a set of merkle proofs, as requested. Each request is a
-	/// block hash and request parameters.
-	///
-	/// Returns a vector of RLP-encoded lists satisfying the requests.
-	fn proofs(&self, req: request::StateProofs) -> Vec<Bytes>;
-
-	/// Provide contract code for the specified (block_hash, account_hash) pairs.
-	/// Each item in the resulting vector is either the raw bytecode or empty.
-	fn contract_code(&self, req: request::ContractCodes) -> Vec<Bytes>;
-
-	/// Provide header proofs from the Canonical Hash Tries as well as the headers 
-	/// they correspond to -- each element in the returned vector is a 2-tuple.
-	/// The first element is a block header and the second a merkle proof of 
-	/// the header in a requested CHT.
-	fn header_proofs(&self, req: request::HeaderProofs) -> Vec<Bytes>;
-
-	/// Provide pending transactions.
-	fn ready_transactions(&self) -> Vec<PendingTransaction>;
-}
-
-// Implementation of a light client data provider for a client.
-impl<T: ProvingBlockChainClient + ?Sized> Provider for T {
-	fn chain_info(&self) -> BlockChainInfo {
-		BlockChainClient::chain_info(self)
-	}
-
-	fn reorg_depth(&self, a: &H256, b: &H256) -> Option<u64> {
-		self.tree_route(a, b).map(|route| route.index as u64)
-	}
-
-	fn earliest_state(&self) -> Option<u64> {
-		Some(self.pruning_info().earliest_state)
-	}
-
 	fn block_headers(&self, req: request::Headers) -> Vec<Bytes> {
 		use request::HashOrNumber;
 		use ethcore::views::HeaderView;
 
+		if req.max == 0 { return Vec::new() }
+
 		let best_num = self.chain_info().best_block_number;
 		let start_num = match req.start {
 			HashOrNumber::Number(start_num) => start_num,
@@ -110,7 +68,10 @@ impl<T: ProvingBlockChainClient + ?Sized> Provider for T {
 				}
 				Some(header) => {
 					let num = HeaderView::new(&header).number();
-					if req.max == 1 || self.block_hash(BlockId::Number(num)) != Some(hash) {
+					let canon_hash = self.block_header(BlockId::Number(num))
+						.map(|h| HeaderView::new(&h).hash());
+
+					if req.max == 1 || canon_hash != Some(hash) {
 						// Non-canonical header or single header requested.
 						return vec![header];
 					}
@@ -130,6 +91,11 @@ impl<T: ProvingBlockChainClient + ?Sized> Provider for T {
 			.collect()
 	}
 
+	/// Get a block header by id.
+	fn block_header(&self, id: BlockId) -> Option<Bytes>;
+
+	/// Provide as many as possible of the requested blocks (minus the headers) encoded
+	/// in RLP format.
 	fn block_bodies(&self, req: request::Bodies) -> Vec<Bytes> {
 		req.block_hashes.into_iter()
 			.map(|hash| self.block_body(BlockId::Hash(hash)))
@@ -137,6 +103,11 @@ impl<T: ProvingBlockChainClient + ?Sized> Provider for T {
 			.collect()
 	}
 
+	/// Get a block body by id.
+	fn block_body(&self, id: BlockId) -> Option<Bytes>;
+
+	/// Provide the receipts as many as possible of the requested blocks.
+	/// Returns a vector of RLP-encoded lists of receipts.
 	fn receipts(&self, req: request::Receipts) -> Vec<Bytes> {
 		req.block_hashes.into_iter()
 			.map(|hash| self.block_receipts(&hash))
@@ -144,16 +115,20 @@ impl<T: ProvingBlockChainClient + ?Sized> Provider for T {
 			.collect()
 	}
 
+	/// Get a block's receipts as an RLP-encoded list by block hash.
+	fn block_receipts(&self, hash: &H256) -> Option<Bytes>;
+
+	/// Provide a set of merkle proofs, as requested. Each request is a
+	/// block hash and request parameters.
+	///
+	/// Returns a vector of RLP-encoded lists satisfying the requests.
 	fn proofs(&self, req: request::StateProofs) -> Vec<Bytes> {
 		use rlp::{RlpStream, Stream};
 
 		let mut results = Vec::with_capacity(req.requests.len());
 
 		for request in req.requests {
-			let proof = match request.key2 {
+			let proof = self.state_proof(request);
-				Some(key2) => self.prove_storage(request.key1, key2, request.from_level, BlockId::Hash(request.block)),
-				None => self.prove_account(request.key1, request.from_level, BlockId::Hash(request.block)),
-			};
 
 			let mut stream = RlpStream::new_list(proof.len());
 			for node in proof {
@@ -166,16 +141,94 @@ impl<T: ProvingBlockChainClient + ?Sized> Provider for T {
 		results
 	}
 
-	fn contract_code(&self, req: request::ContractCodes) -> Vec<Bytes> {
+	/// Get a state proof from a request. Each proof should be a vector
+	/// of rlp-encoded trie nodes, in ascending order by distance from the root.
+	fn state_proof(&self, req: request::StateProof) -> Vec<Bytes>;
+
+	/// Provide contract code for the specified (block_hash, account_hash) pairs.
+	/// Each item in the resulting vector is either the raw bytecode or empty.
+	fn contract_codes(&self, req: request::ContractCodes) -> Vec<Bytes> {
 		req.code_requests.into_iter()
-			.map(|req| {
+			.map(|req| self.contract_code(req))
-				self.code_by_hash(req.account_key, BlockId::Hash(req.block_hash))
+			.collect()
+	}
+
+	/// Get contract code by request. Either the raw bytecode or empty.
+	fn contract_code(&self, req: request::ContractCode) -> Bytes;
+
+	/// Provide header proofs from the Canonical Hash Tries as well as the headers
+	/// they correspond to -- each element in the returned vector is a 2-tuple.
+	/// The first element is a block header and the second a merkle proof of
+	/// the header in a requested CHT.
+	fn header_proofs(&self, req: request::HeaderProofs) -> Vec<Bytes> {
+		use rlp::{self, RlpStream, Stream};
+
+		req.requests.into_iter()
+			.map(|req| self.header_proof(req))
+			.map(|maybe_proof| match maybe_proof {
+				None => rlp::EMPTY_LIST_RLP.to_vec(),
+				Some((header, proof)) => {
+					let mut stream = RlpStream::new_list(2);
+					stream.append_raw(&header, 1).begin_list(proof.len());
+
+					for node in proof {
+						stream.append_raw(&node, 1);
+					}
+
+					stream.out()
+				}
 			})
 			.collect()
 	}
 
-	fn header_proofs(&self, req: request::HeaderProofs) -> Vec<Bytes> {
+	/// Provide a header proof from a given Canonical Hash Trie as well as the
-		req.requests.into_iter().map(|_| ::rlp::EMPTY_LIST_RLP.to_vec()).collect()
+	/// corresponding header. The first element is the block header and the
+	/// second is a merkle proof of the CHT.
+	fn header_proof(&self, req: request::HeaderProof) -> Option<(Bytes, Vec<Bytes>)>;
+
+	/// Provide pending transactions.
+	fn ready_transactions(&self) -> Vec<PendingTransaction>;
+}
+
+// Implementation of a light client data provider for a client.
+impl<T: ProvingBlockChainClient + ?Sized> Provider for T {
+	fn chain_info(&self) -> BlockChainInfo {
+		BlockChainClient::chain_info(self)
+	}
+
+	fn reorg_depth(&self, a: &H256, b: &H256) -> Option<u64> {
+		self.tree_route(a, b).map(|route| route.index as u64)
+	}
+
+	fn earliest_state(&self) -> Option<u64> {
+		Some(self.pruning_info().earliest_state)
+	}
+
+	fn block_header(&self, id: BlockId) -> Option<Bytes> {
+		BlockChainClient::block_header(self, id)
+	}
+
+	fn block_body(&self, id: BlockId) -> Option<Bytes> {
+		BlockChainClient::block_body(self, id)
+	}
+
+	fn block_receipts(&self, hash: &H256) -> Option<Bytes> {
+		BlockChainClient::block_receipts(self, hash)
+	}
+
+	fn state_proof(&self, req: request::StateProof) -> Vec<Bytes> {
+		match req.key2 {
+			Some(key2) => self.prove_storage(req.key1, key2, req.from_level, BlockId::Hash(req.block)),
+			None => self.prove_account(req.key1, req.from_level, BlockId::Hash(req.block)),
+		}
+	}
+
+	fn contract_code(&self, req: request::ContractCode) -> Bytes {
+		self.code_by_hash(req.account_key, BlockId::Hash(req.block_hash))
+	}
+
+	fn header_proof(&self, _req: request::HeaderProof) -> Option<(Bytes, Vec<Bytes>)> {
+		None
 	}
 
 	fn ready_transactions(&self) -> Vec<PendingTransaction> {

ethcore/src/verification/queue/mod.rs

@@ -687,8 +687,12 @@ impl<K: Kind> Drop for VerificationQueue<K> {
 		*self.state.0.lock() = State::Exit;
 		self.state.1.notify_all();
 
-		// wake up all threads waiting for more work.
+		// acquire this lock to force threads to reach the waiting point
+		// if they're in-between the exit check and the more_to_verify wait.
+		{
+			let _more = self.verification.more_to_verify.lock().unwrap();
 			self.more_to_verify.notify_all();
+		}
 
 		// wait for all verifier threads to join.
 		for thread in self.verifier_handles.drain(..) {

js/package.json

@@ -1,6 +1,6 @@
 {
   "name": "parity.js",
-  "version": "0.2.130",
+  "version": "0.2.131",
   "main": "release/index.js",
   "jsnext:main": "src/index.js",
   "author": "Parity Team <admin@parity.io>",
@@ -117,6 +117,7 @@
     "react-hot-loader": "3.0.0-beta.6",
     "react-intl-aggregate-webpack-plugin": "0.0.1",
     "rucksack-css": "0.9.1",
+    "serviceworker-webpack-plugin": "0.1.7",
     "sinon": "1.17.6",
     "sinon-as-promised": "4.0.2",
     "sinon-chai": "2.8.0",
@@ -156,6 +157,7 @@
     "mobx-react-devtools": "4.2.10",
     "moment": "2.17.0",
     "phoneformat.js": "1.0.3",
+    "promise-worker": "1.1.1",
     "push.js": "0.0.11",
     "qs": "6.3.0",
     "react": "15.4.1",
@@ -182,7 +184,6 @@
     "valid-url": "1.0.9",
     "validator": "6.2.0",
     "web3": "0.17.0-beta",
-    "whatwg-fetch": "2.0.1",
+    "whatwg-fetch": "2.0.1"
-    "worker-loader": "0.7.1"
   }
 }

js/src/redux/providers/compilerActions.js

@@ -14,7 +14,26 @@
 // You should have received a copy of the GNU General Public License
 // along with Parity.  If not, see <http://www.gnu.org/licenses/>.
 
-import CompilerWorker from 'worker-loader!./compilerWorker.js';
+import PromiseWorker from 'promise-worker';
+import runtime from 'serviceworker-webpack-plugin/lib/runtime';
+
+let workerRegistration;
+
+// Setup the Service Worker
+if ('serviceWorker' in navigator) {
+  workerRegistration = runtime
+    .register()
+    .then(() => navigator.serviceWorker.ready)
+    .then((registration) => {
+      const _worker = registration.active;
+      _worker.controller = registration.active;
+      const worker = new PromiseWorker(_worker);
+
+      return worker;
+    });
+} else {
+  workerRegistration = Promise.reject('Service Worker is not available in your browser.');
+}
 
 export function setWorker (worker) {
   return {
@@ -23,6 +42,13 @@ export function setWorker (worker) {
   };
 }
 
+export function setError (error) {
+  return {
+    type: 'setError',
+    error
+  };
+}
+
 export function setupWorker () {
   return (dispatch, getState) => {
     const state = getState();
@@ -31,7 +57,13 @@ export function setupWorker () {
       return;
     }
 
-    const worker = new CompilerWorker();
+    workerRegistration
+      .then((worker) => {
         dispatch(setWorker(worker));
+      })
+      .catch((error) => {
+        console.error('sw', error);
+        dispatch(setWorker(null));
+      });
   };
 }

js/src/redux/providers/compilerReducer.js

@@ -17,13 +17,18 @@
 import { handleActions } from 'redux-actions';
 
 const initialState = {
-  worker: null
+  worker: undefined,
+  error: null
 };
 
 export default handleActions({
   setWorker (state, action) {
     const { worker } = action;
-
     return Object.assign({}, state, { worker });
+  },
+
+  setError (state, action) {
+    const { error } = action;
+    return Object.assign({}, state, { error });
   }
 }, initialState);

js/src/redux/providers/compilerWorker.js

@@ -1,177 +0,0 @@
-// Copyright 2015, 2016 Parity Technologies (UK) Ltd.
-// This file is part of Parity.
-
-// Parity is free software: you can redistribute it and/or modify
-// it under the terms of the GNU General Public License as published by
-// the Free Software Foundation, either version 3 of the License, or
-// (at your option) any later version.
-
-// Parity is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU General Public License for more details.
-
-// You should have received a copy of the GNU General Public License
-// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
-
-import solc from 'solc/browser-wrapper';
-import { isWebUri } from 'valid-url';
-
-self.solcVersions = {};
-self.files = {};
-self.lastCompile = {
-  sourcecode: '',
-  result: '',
-  version: ''
-};
-
-// eslint-disable-next-line no-undef
-onmessage = (event) => {
-  const message = JSON.parse(event.data);
-
-  switch (message.action) {
-    case 'compile':
-      compile(message.data);
-      break;
-    case 'load':
-      load(message.data);
-      break;
-    case 'setFiles':
-      setFiles(message.data);
-      break;
-    case 'close':
-      close();
-      break;
-  }
-};
-
-function setFiles (files) {
-  const prevFiles = self.files;
-  const nextFiles = files.reduce((obj, file) => {
-    obj[file.name] = file.sourcecode;
-    return obj;
-  }, {});
-
-  self.files = {
-    ...prevFiles,
-    ...nextFiles
-  };
-}
-
-function findImports (path) {
-  if (self.files[path]) {
-    if (self.files[path].error) {
-      return { error: self.files[path].error };
-    }
-
-    return { contents: self.files[path] };
-  }
-
-  if (isWebUri(path)) {
-    console.log('[worker] fetching', path);
-
-    fetch(path)
-      .then((r) => r.text())
-      .then((c) => {
-        console.log('[worker]', 'got content at ' + path);
-        self.files[path] = c;
-
-        postMessage(JSON.stringify({
-          event: 'try-again'
-        }));
-      })
-      .catch((e) => {
-        console.error('[worker]', 'fetching', path, e);
-        self.files[path] = { error: e };
-      });
-
-    return { error: '__parity_tryAgain' };
-  }
-
-  console.log(`[worker] path ${path} not found...`);
-  return { error: 'File not found' };
-}
-
-function compile (data, optimized = 1) {
-  const { sourcecode, build } = data;
-  const { longVersion } = build;
-
-  if (self.lastCompile.sourcecode === sourcecode && self.lastCompile.longVersion === longVersion) {
-    return postMessage(JSON.stringify({
-      event: 'compiled',
-      data: self.lastCompile.result
-    }));
-  }
-
-  fetchSolc(build)
-    .then((compiler) => {
-      const input = {
-        '': sourcecode
-      };
-
-      const compiled = compiler.compile({ sources: input }, optimized, findImports);
-
-      self.lastCompile = {
-        version: longVersion, result: compiled,
-        sourcecode
-      };
-
-      postMessage(JSON.stringify({
-        event: 'compiled',
-        data: compiled
-      }));
-    });
-}
-
-function load (build) {
-  postMessage(JSON.stringify({
-    event: 'loading',
-    data: true
-  }));
-
-  fetchSolc(build)
-    .then(() => {
-      postMessage(JSON.stringify({
-        event: 'loading',
-        data: false
-      }));
-    })
-    .catch(() => {
-      postMessage(JSON.stringify({
-        event: 'loading',
-        data: false
-      }));
-    });
-}
-
-function fetchSolc (build) {
-  const { path, longVersion } = build;
-
-  if (self.solcVersions[path]) {
-    return Promise.resolve(self.solcVersions[path]);
-  }
-
-  const URL = `https://raw.githubusercontent.com/ethereum/solc-bin/gh-pages/bin/${path}`;
-  console.log(`[worker] fetching solc-bin ${longVersion} at ${URL}`);
-
-  return fetch(URL)
-    .then((r) => r.text())
-    .then((code) => {
-      const solcCode = code.replace(/^var Module;/, 'var Module=self.__solcModule;');
-      self.__solcModule = {};
-
-      console.log(`[worker] evaluating ${longVersion}`);
-
-      // eslint-disable-next-line no-eval
-      eval(solcCode);
-
-      console.log(`[worker] done evaluating ${longVersion}`);
-
-      const compiler = solc(self.__solcModule);
-      self.solcVersions[path] = compiler;
-      return compiler;
-    })
-    .catch((e) => {
-      console.error('fetching solc', e);
-    });
-}

js/src/serviceWorker.js

@@ -0,0 +1,144 @@
+// Copyright 2015, 2016 Parity Technologies (UK) Ltd.
+// This file is part of Parity.
+
+// Parity is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// Parity is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
+
+import registerPromiseWorker from 'promise-worker/register';
+import SolidityUtils from '~/util/solidity';
+
+const CACHE_NAME = 'parity-cache-v1';
+
+registerPromiseWorker((msg) => {
+  return handleMessage(msg);
+});
+
+self.addEventListener('install', (event) => {
+  event.waitUntil(self.skipWaiting());
+});
+
+self.addEventListener('activate', (event) => {
+  event.waitUntil(self.clients.claim());
+});
+
+self.addEventListener('fetch', (event) => {
+  const { url } = event.request;
+
+  if (/raw.githubusercontent.com\/ethereum\/solc-bin(.+)list\.json$/.test(url)) {
+    // Return the cached version, but still update it in background
+    return event.respondWith(cachedFetcher(event.request, true));
+  }
+
+  if (/raw.githubusercontent.com\/ethereum\/solc-bin(.+)soljson(.+)\.js$/.test(url)) {
+    return event.respondWith(cachedFetcher(event.request));
+  }
+});
+
+self.solc = {};
+self.files = {};
+
+function cachedFetcher (request, update = false) {
+  return caches
+    .match(request)
+    .then((response) => {
+      // Return cached response if exists and no
+      // updates needed
+      if (response && !update) {
+        return response;
+      }
+
+      const fetcher = fetch(request.clone())
+        .then((response) => {
+          // Check if we received a valid response
+          if (!response || response.status !== 200) {
+            return response;
+          }
+
+          return caches
+            .open(CACHE_NAME)
+            .then((cache) => {
+              cache.put(request, response.clone());
+              return response;
+            });
+        });
+
+      // Cache hit - return response
+      // Still want to perform the fetch (update)
+      if (response) {
+        return response;
+      }
+
+      return fetcher;
+    });
+}
+
+function handleMessage (message) {
+  switch (message.action) {
+    case 'compile':
+      return compile(message.data);
+
+    case 'load':
+      return getCompiler(message.data).then(() => 'ok');
+
+    case 'setFiles':
+      return setFiles(message.data);
+
+    default:
+      console.warn(`unknown action "${message.action}"`);
+      return null;
+  }
+}
+
+function compile (data) {
+  const { build } = data;
+
+  return getCompiler(build)
+    .then((compiler) => {
+      return SolidityUtils.compile(data, compiler);
+    });
+}
+
+function setFiles (files) {
+  const prevFiles = self.files;
+  const nextFiles = files.reduce((obj, file) => {
+    obj[file.name] = file.sourcecode;
+    return obj;
+  }, {});
+
+  self.files = {
+    ...prevFiles,
+    ...nextFiles
+  };
+
+  return 'ok';
+}
+
+function getCompiler (build) {
+  const { longVersion } = build;
+
+  const fetcher = (url) => {
+    const request = new Request(url);
+    return cachedFetcher(request);
+  };
+
+  if (!self.solc[longVersion]) {
+    self.solc[longVersion] = SolidityUtils
+      .getCompiler(build, fetcher)
+      .then((compiler) => {
+        self.solc[longVersion] = compiler;
+        return compiler;
+      });
+  }
+
+  return self.solc[longVersion];
+}

js/src/util/solidity.js

@@ -0,0 +1,89 @@
+// Copyright 2015, 2016 Parity Technologies (UK) Ltd.
+// This file is part of Parity.
+
+// Parity is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// Parity is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
+
+import solc from 'solc/browser-wrapper';
+
+export default class SolidityUtils {
+
+  static compile (data, compiler) {
+    const { sourcecode, build, optimize, files } = data;
+
+    const start = Date.now();
+    console.log('[solidity] compiling...');
+
+    const input = {
+      '': sourcecode
+    };
+
+    const findFiles = (path) => {
+      const file = files.find((f) => f.name === path);
+
+      if (file) {
+        return { contents: file.sourcecode };
+      } else {
+        return { error: 'File not found' };
+      }
+    };
+
+    const compiled = compiler.compile({ sources: input }, optimize ? 1 : 0, findFiles);
+
+    const time = Math.round((Date.now() - start) / 100) / 10;
+    console.log(`[solidity] done compiling in ${time}s`);
+
+    compiled.version = build.longVersion;
+    compiled.sourcecode = sourcecode;
+
+    return compiled;
+  }
+
+  static getCompiler (build, _fetcher) {
+    const { longVersion, path } = build;
+
+    const URL = `https://raw.githubusercontent.com/ethereum/solc-bin/gh-pages/bin/${path}`;
+
+    const fetcher = typeof _fetcher === 'function'
+      ? _fetcher
+      : (url) => fetch(url);
+
+    const isWorker = typeof window !== 'object';
+
+    return fetcher(URL)
+      .then((r) => r.text())
+      .then((code) => {
+        // `window` for main thread, `self` for workers
+        const _self = isWorker ? self : window;
+        _self.Module = {};
+
+        const solcCode = code.replace('var Module;', `var Module=${isWorker ? 'self' : 'window'}.Module;`);
+
+        console.log(`[solidity] evaluating ${longVersion}`);
+
+        try {
+          // eslint-disable-next-line no-eval
+          eval(solcCode);
+        } catch (e) {
+          return Promise.reject(e);
+        }
+
+        console.log(`[solidity] done evaluating ${longVersion}`);
+
+        const compiler = solc(_self.Module);
+        delete _self.Module;
+
+        return compiler;
+      });
+  }
+}

js/src/views/WriteContract/writeContract.css

@@ -26,6 +26,16 @@
   color: #ccc;
 }
 
+.toggles {
+  display: flex;
+  flex-direction: row;
+  margin: 1em 0 0;
+
+  > * {
+    flex: 1;
+  }
+}
+
 .container {
   padding: 1em 0;
   display: flex;
@@ -45,6 +55,14 @@
   }
 }
 
+.error {
+  background-color: rgba(200, 0, 0, 0.25);
+  padding: 1em 0.5em;
+  margin-top: -0.5em;
+  font-family: monospace;
+  font-size: 0.9em;
+}
+
 .mainEditor {
   &:global(.ace-solarized-dark) {
     background-color: rgba(0, 0, 0, 0.5);
@@ -87,13 +105,13 @@
   display: flex;
   flex-direction: column;
   margin-right: 0.5em;
-
   .panel {
     background-color: rgba(0, 0, 0, 0.5);
     padding: 1em;
     flex: 1;
     display: flex;
     flex-direction: column;
+    box-sizing: border-box;
   }
 
   .compilation {

js/src/views/WriteContract/writeContract.js

@@ -16,7 +16,7 @@
 
 import React, { PropTypes, Component } from 'react';
 import { observer } from 'mobx-react';
-import { MenuItem } from 'material-ui';
+import { MenuItem, Toggle } from 'material-ui';
 import { connect } from 'react-redux';
 import { bindActionCreators } from 'redux';
 import CircularProgress from 'material-ui/CircularProgress';
@@ -42,10 +42,11 @@ class WriteContract extends Component {
   static propTypes = {
     accounts: PropTypes.object.isRequired,
     setupWorker: PropTypes.func.isRequired,
-    worker: PropTypes.object
+    worker: PropTypes.object,
+    workerError: PropTypes.any
   };
 
-  store = new WriteContractStore();
+  store = WriteContractStore.get();
 
   state = {
     resizing: false,
@@ -56,23 +57,32 @@ class WriteContract extends Component {
     const { setupWorker, worker } = this.props;
     setupWorker();
 
-    if (worker) {
+    if (worker !== undefined) {
-      this.store.setCompiler(worker);
+      this.store.setWorker(worker);
     }
   }
 
   componentDidMount () {
     this.store.setEditor(this.refs.editor);
 
+    if (this.props.workerError) {
+      this.store.setWorkerError(this.props.workerError);
+    }
+
     // Wait for editor to be loaded
     window.setTimeout(() => {
       this.store.resizeEditor();
     }, 2000);
   }
 
+  // Set the worker if not set before (eg. first page loading)
   componentWillReceiveProps (nextProps) {
-    if (!this.props.worker && nextProps.worker) {
+    if (this.props.worker === undefined && nextProps.worker !== undefined) {
-      this.store.setCompiler(nextProps.worker);
+      this.store.setWorker(nextProps.worker);
+    }
+
+    if (this.props.workerError !== nextProps.workerError) {
+      this.store.setWorkerError(nextProps.workerError);
     }
   }
 
@@ -217,7 +227,18 @@ class WriteContract extends Component {
   }
 
   renderParameters () {
-    const { compiling, contract, selectedBuild, loading } = this.store;
+    const { compiling, contract, selectedBuild, loading, workerError } = this.store;
+
+    if (workerError) {
+      return (
+        <div className={ styles.panel }>
+          <div className={ styles.centeredMessage }>
+            <p>Unfortuantely, an error occurred...</p>
+            <div className={ styles.error }>{ workerError.toString() }</div>
+          </div>
+        </div>
+      );
+    }
 
     if (selectedBuild < 0) {
       return (
@@ -262,6 +283,24 @@ class WriteContract extends Component {
             : null
           }
         </div>
+        <div className={ styles.toggles }>
+          <div>
+            <Toggle
+              label='Optimize'
+              labelPosition='right'
+              onToggle={ this.store.handleOptimizeToggle }
+              toggled={ this.store.optimize }
+            />
+          </div>
+          <div>
+            <Toggle
+              label='Auto-Compile'
+              labelPosition='right'
+              onToggle={ this.store.handleAutocompileToggle }
+              toggled={ this.store.autocompile }
+            />
+          </div>
+        </div>
         { this.renderSolidityVersions() }
         { this.renderCompilation() }
       </div>
@@ -485,8 +524,8 @@ class WriteContract extends Component {
 
 function mapStateToProps (state) {
   const { accounts } = state.personal;
-  const { worker } = state.compiler;
+  const { worker, error } = state.compiler;
-  return { accounts, worker };
+  return { accounts, worker, workerError: error };
 }
 
 function mapDispatchToProps (dispatch) {

js/src/views/WriteContract/writeContractStore.js

@@ -14,10 +14,13 @@
 // You should have received a copy of the GNU General Public License
 // along with Parity.  If not, see <http://www.gnu.org/licenses/>.
 
-import { action, observable } from 'mobx';
+import { action, observable, transaction } from 'mobx';
 import store from 'store';
 import { debounce } from 'lodash';
 
+import { sha3 } from '~/api/util/sha3';
+import SolidityUtils from '~/util/solidity';
+
 const WRITE_CONTRACT_STORE_KEY = '_parity::writeContractStore';
 
 const SNIPPETS = {
@@ -43,6 +46,8 @@ const SNIPPETS = {
   }
 };
 
+let instance = null;
+
 export default class WriteContractStore {
 
   @observable sourcecode = '';
@@ -61,6 +66,9 @@ export default class WriteContractStore {
   @observable builds = [];
   @observable selectedBuild = -1;
 
+  @observable autocompile = false;
+  @observable optimize = false;
+
   @observable showDeployModal = false;
   @observable showSaveModal = false;
   @observable showLoadModal = false;
@@ -68,45 +76,55 @@ export default class WriteContractStore {
   @observable savedContracts = {};
   @observable selectedContract = {};
 
+  @observable workerError = null;
+
+  loadingSolidity = false;
+  lastCompilation = {};
   snippets = SNIPPETS;
+  worker = undefined;
+
+  useWorker = true;
+  solc = {};
 
   constructor () {
-    this.reloadContracts();
-    this.fetchSolidityVersions();
-
     this.debouncedCompile = debounce(this.handleCompile, 1000);
   }
 
+  static get () {
+    if (!instance) {
+      instance = new WriteContractStore();
+    }
+
+    return instance;
+  }
+
+  @action setWorkerError (error) {
+    this.workerError = error;
+  }
+
   @action setEditor (editor) {
     this.editor = editor;
   }
 
-  @action setCompiler (compiler) {
+  @action setWorker (worker) {
-    this.compiler = compiler;
+    if (this.worker !== undefined) {
-
+      return;
-    this.compiler.onmessage = (event) => {
-      const message = JSON.parse(event.data);
-
-      switch (message.event) {
-        case 'compiled':
-          this.parseCompiled(message.data);
-          break;
-        case 'loading':
-          this.parseLoading(message.data);
-          break;
-        case 'try-again':
-          this.handleCompile();
-          break;
     }
-    };
+
+    this.worker = worker;
+
+    this
+      .fetchSolidityVersions()
+      .then(() => this.reloadContracts());
   }
 
   fetchSolidityVersions () {
-    fetch('https://raw.githubusercontent.com/ethereum/solc-bin/gh-pages/bin/list.json')
+    return fetch('https://raw.githubusercontent.com/ethereum/solc-bin/gh-pages/bin/list.json')
       .then((r) => r.json())
       .then((data) => {
         const { builds, releases, latestRelease } = data;
         let latestIndex = -1;
+        let promise = Promise.resolve();
 
         this.builds = builds.reverse().map((build, index) => {
           if (releases[build.version] === build.path) {
@@ -114,7 +132,7 @@ export default class WriteContractStore {
 
             if (build.version === latestRelease) {
               build.latest = true;
-              this.loadSolidityVersion(build);
+              promise = promise.then(() => this.loadSolidityVersion(build));
               latestIndex = index;
             }
           }
@@ -123,29 +141,93 @@ export default class WriteContractStore {
         });
 
         this.selectedBuild = latestIndex;
+        return promise;
+      })
+      .catch((error) => {
+        this.setWorkerError(error);
       });
   }
 
-  @action closeWorker = () => {
-    this.compiler.postMessage(JSON.stringify({
-      action: 'close'
-    }));
-  }
-
   @action handleImport = (sourcecode) => {
     this.reloadContracts(-1, sourcecode);
   }
 
   @action handleSelectBuild = (_, index, value) => {
     this.selectedBuild = value;
-    this.loadSolidityVersion(this.builds[value]);
+    return this
+      .loadSolidityVersion(this.builds[value])
+      .then(() => this.handleCompile());
+  }
+
+  getCompiler (build) {
+    const { longVersion } = build;
+
+    if (!this.solc[longVersion]) {
+      this.solc[longVersion] = SolidityUtils
+        .getCompiler(build)
+        .then((compiler) => {
+          this.solc[longVersion] = compiler;
+          return compiler;
+        })
+        .catch((error) => {
+          this.setWorkerError(error);
+        });
+    }
+
+    return Promise.resolve(this.solc[longVersion]);
   }
 
   @action loadSolidityVersion = (build) => {
-    this.compiler.postMessage(JSON.stringify({
+    if (this.worker === undefined) {
+      return;
+    } else if (this.worker === null) {
+      this.useWorker = false;
+    }
+
+    if (this.loadingSolidity) {
+      return this.loadingSolidity;
+    }
+
+    this.loading = true;
+
+    if (this.useWorker) {
+      this.loadingSolidity = this.worker
+        .postMessage({
           action: 'load',
           data: build
-    }));
+        })
+        .then((result) => {
+          if (result !== 'ok') {
+            throw new Error('error while loading solidity: ' + result);
+          }
+
+          this.loadingSolidity = false;
+          this.loading = false;
+        })
+        .catch((error) => {
+          console.warn('error while loading solidity', error);
+          this.useWorker = false;
+          this.loadingSolidity = null;
+
+          return this.loadSolidityVersion(build);
+        });
+    } else {
+      this.loadingSolidity = this
+        .getCompiler(build)
+        .then(() => {
+          this.loadingSolidity = false;
+          this.loading = false;
+
+          return 'ok';
+        })
+        .catch((error) => {
+          this.setWorkerError(error);
+          this.loadingSolidity = false;
+          this.loading = false;
+        });
+    }
+
+    return this.loadingSolidity;
   }
 
   @action handleOpenDeployModal = () => {
@@ -177,23 +259,120 @@ export default class WriteContractStore {
     this.contract = this.contracts[Object.keys(this.contracts)[value]];
   }
 
+  compile = (data) => {
+    if (this.useWorker) {
+      return this.worker.postMessage({
+        action: 'compile',
+        data
+      });
+    }
+
+    return new Promise((resolve, reject) => {
+      window.setTimeout(() => {
+        this
+          .getCompiler(data.build)
+          .then((compiler) => {
+            return SolidityUtils.compile(data, compiler);
+          })
+          .then(resolve)
+          .catch(reject);
+      }, 0);
+    });
+  }
+
   @action handleCompile = () => {
+    transaction(() => {
       this.compiled = false;
       this.compiling = true;
+    });
 
     const build = this.builds[this.selectedBuild];
+    const version = build.longVersion;
+    const sourcecode = this.sourcecode.replace(/\n+/g, '\n').replace(/\s(\s+)/g, ' ');
+    const hash = sha3(JSON.stringify({ version, sourcecode, optimize: this.optimize }));
 
-    if (this.compiler && typeof this.compiler.postMessage === 'function') {
+    let promise = Promise.resolve(null);
-      this.sendFilesToWorker();
 
-      this.compiler.postMessage(JSON.stringify({
+    if (hash === this.lastCompilation.hash) {
-        action: 'compile',
+      promise = new Promise((resolve) => {
-        data: {
+        window.setTimeout(() => {
-          sourcecode: this.sourcecode,
+          resolve(this.lastCompilation);
-          build: build
+        }, 500);
+      });
+    } else {
+      promise = this
+        .compile({
+          sourcecode: sourcecode,
+          build: build,
+          optimize: this.optimize,
+          files: this.files
+        })
+        .then((data) => {
+          const result = this.parseCompiled(data);
+
+          this.lastCompilation = {
+            result: result,
+            date: new Date(),
+            version: data.version,
+            hash
+          };
+
+          return this.lastCompilation;
+        })
+        .catch((error) => {
+          this.setWorkerError(error);
+        });
     }
-      }));
+
+    return promise.then((data = null) => {
+      if (data) {
+        const {
+          contract, contractIndex,
+          annotations, contracts, errors
+        } = data.result;
+
+        this.contract = contract;
+        this.contractIndex = contractIndex;
+
+        this.annotations = annotations;
+        this.contracts = contracts;
+        this.errors = errors;
       }
+
+      this.compiled = true;
+      this.compiling = false;
+    });
+  }
+
+  @action handleAutocompileToggle = () => {
+    this.autocompile = !this.autocompile;
+  }
+
+  @action handleOptimizeToggle = () => {
+    this.optimize = !this.optimize;
+  }
+
+  @action parseCompiled = (data) => {
+    const { contracts } = data;
+
+    const { errors = [] } = data;
+    const errorAnnotations = this.parseErrors(errors);
+    const formalAnnotations = this.parseErrors(data.formal && data.formal.errors, true);
+
+    const annotations = [].concat(
+      errorAnnotations,
+      formalAnnotations
+    );
+
+    const contractKeys = Object.keys(contracts || {});
+
+    const contract = contractKeys.length ? contracts[contractKeys[0]] : null;
+    const contractIndex = contractKeys.length ? 0 : -1;
+
+    return {
+      contract, contractIndex,
+      contracts, errors, annotations
+    };
   }
 
   parseErrors = (data, formal = false) => {
@@ -220,43 +399,6 @@ export default class WriteContractStore {
       });
   }
 
-  @action parseCompiled = (data) => {
-    const { contracts } = data;
-
-    const { errors = [] } = data;
-    const errorAnnotations = this.parseErrors(errors);
-    const formalAnnotations = this.parseErrors(data.formal && data.formal.errors, true);
-
-    const annotations = [].concat(
-      errorAnnotations,
-      formalAnnotations
-    );
-
-    if (annotations.findIndex((a) => /__parity_tryAgain/.test(a.text)) > -1) {
-      return;
-    }
-
-    const contractKeys = Object.keys(contracts || {});
-
-    this.contract = contractKeys.length ? contracts[contractKeys[0]] : null;
-    this.contractIndex = contractKeys.length ? 0 : -1;
-
-    this.contracts = contracts;
-    this.errors = errors;
-    this.annotations = annotations;
-
-    this.compiled = true;
-    this.compiling = false;
-  }
-
-  @action parseLoading = (isLoading) => {
-    this.loading = isLoading;
-
-    if (!isLoading) {
-      this.handleCompile();
-    }
-  }
-
   @action handleEditSourcecode = (value, compile = false) => {
     this.sourcecode = value;
 
@@ -268,7 +410,7 @@ export default class WriteContractStore {
 
     if (compile) {
       this.handleCompile();
-    } else {
+    } else if (this.autocompile) {
       this.debouncedCompile();
     }
   }
@@ -327,8 +469,9 @@ export default class WriteContractStore {
       current: this.sourcecode
     });
 
-    this.handleCompile();
     this.resizeEditor();
+
+    return this.handleCompile();
   }
 
   @action handleLoadContract = (contract) => {
@@ -363,16 +506,13 @@ export default class WriteContractStore {
     } catch (e) {}
   }
 
-  sendFilesToWorker = () => {
+  get files () {
     const files = [].concat(
       Object.values(this.snippets),
       Object.values(this.savedContracts)
     );
 
-    this.compiler.postMessage(JSON.stringify({
+    return files;
-      action: 'setFiles',
-      data: files
-    }));
   }
 
 }

js/webpack/app.js

@@ -22,6 +22,7 @@ const WebpackErrorNotificationPlugin = require('webpack-error-notification');
 const CopyWebpackPlugin = require('copy-webpack-plugin');
 const HtmlWebpackPlugin = require('html-webpack-plugin');
 const ExtractTextPlugin = require('extract-text-webpack-plugin');
+const ServiceWorkerWebpackPlugin = require('serviceworker-webpack-plugin');
 
 const Shared = require('./shared');
 const DAPPS = require('../src/dapps');
@@ -50,7 +51,7 @@ module.exports = {
     rules: [
       {
         test: /\.js$/,
-        exclude: /node_modules/,
+        exclude: /(node_modules)/,
         // use: [ 'happypack/loader?id=js' ]
         use: isProd ? ['babel-loader'] : [
           'babel-loader?cacheDirectory=true'
@@ -136,7 +137,18 @@ module.exports = {
   },
 
   plugins: (function () {
-    const plugins = Shared.getPlugins().concat([
+    const DappsHTMLInjection = DAPPS.map((dapp) => {
+      return new HtmlWebpackPlugin({
+        title: dapp.title,
+        filename: dapp.name + '.html',
+        template: './dapps/index.ejs',
+        favicon: FAVICON,
+        secure: dapp.secure,
+        chunks: [ isProd ? null : 'commons', dapp.name ]
+      });
+    });
+
+    const plugins = Shared.getPlugins().concat(
       new CopyWebpackPlugin([{ from: './error_pages.css', to: 'styles.css' }], {}),
       new WebpackErrorNotificationPlugin(),
 
@@ -151,17 +163,14 @@ module.exports = {
         template: './index.ejs',
         favicon: FAVICON,
         chunks: [ isProd ? null : 'commons', 'index' ]
-      })
+      }),
-    ], DAPPS.map((dapp) => {
+
-      return new HtmlWebpackPlugin({
+      new ServiceWorkerWebpackPlugin({
-        title: dapp.title,
+        entry: path.join(__dirname, '../src/serviceWorker.js')
-        filename: dapp.name + '.html',
+      }),
-        template: './dapps/index.ejs',
+
-        favicon: FAVICON,
+      DappsHTMLInjection
-        secure: dapp.secure,
+    );
-        chunks: [ isProd ? null : 'commons', dapp.name ]
-      });
-    }));
 
     if (!isProd) {
       const DEST_I18N = path.join(__dirname, '..', DEST, 'i18n');

parity/upgrade.rs

@@ -139,9 +139,7 @@ fn file_exists(path: &Path) -> bool {
 }
 
 pub fn upgrade_key_location(from: &PathBuf, to: &PathBuf) {
-	let mut parent = to.clone();
+	match fs::create_dir_all(&to).and_then(|()| fs::read_dir(from)) {
-	parent.pop();
-	match fs::create_dir_all(&parent).and_then(|()| fs::read_dir(from)) {
 		Ok(entries) => {
 			let files: Vec<_> = entries.filter_map(|f| f.ok().and_then(|f| if f.file_type().ok().map_or(false, |f| f.is_file()) { f.file_name().to_str().map(|s| s.to_owned()) } else { None })).collect();
 			let mut num: usize = 0;
@@ -165,7 +163,7 @@ pub fn upgrade_key_location(from: &PathBuf, to: &PathBuf) {
 			}
 		},
 		Err(e) => {
-			warn!("Error moving keys from {:?} to {:?}: {:?}", from, to, e);
+			debug!("Error moving keys from {:?} to {:?}: {:?}", from, to, e);
 		}
 	}
 }