Dont push-release for beta/stable changes

Fixes #4210

.cargo/config

@@ -1,2 +0,0 @@
-[target.armv7-unknown-linux-gnueabihf]
-linker= "arm-linux-gnueabihf-gcc"

.gitignore

@@ -32,3 +32,5 @@
 out/
 
 .vscode
+
+/parity.*

.gitlab-ci.yml

@@ -1,6 +1,7 @@
 stages:
   - test
   - js-build
+  - push-release
   - build
 variables:
   GIT_DEPTH: "3"
@@ -18,9 +19,11 @@ linux-stable:
     - beta
     - tags
     - stable
+    - triggers
   script:
-    - cargo build --release $CARGOFLAGS
+    - cargo build -j $(nproc) --release --features final $CARGOFLAGS
     - strip target/release/parity
+    - export SHA3=$(target/release/parity tools hash target/release/parity)
     - md5sum target/release/parity > parity.md5
     - sh scripts/deb-build.sh amd64
     - cp target/release/parity deb/usr/bin/parity
@@ -29,10 +32,14 @@ linux-stable:
     - md5sum "parity_"$VER"_amd64.deb" > "parity_"$VER"_amd64.deb.md5"
     - aws configure set aws_access_key_id $s3_key
     - aws configure set aws_secret_access_key $s3_secret
-    - aws s3api put-object --bucket builds-parity --key $CI_BUILD_REF_NAME/x86_64-unknown-linux-gnu/parity --body target/release/parity
-    - aws s3api put-object --bucket builds-parity --key $CI_BUILD_REF_NAME/x86_64-unknown-linux-gnu/parity.md5 --body parity.md5
-    - aws s3api put-object --bucket builds-parity --key $CI_BUILD_REF_NAME/x86_64-unknown-linux-gnu/"parity_"$VER"_amd64.deb" --body "parity_"$VER"_amd64.deb"
-    - aws s3api put-object --bucket builds-parity --key $CI_BUILD_REF_NAME/x86_64-unknown-linux-gnu/"parity_"$VER"_amd64.deb.md5" --body "parity_"$VER"_amd64.deb.md5"
+    - 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/x86_64-unknown-linux-gnu
+    - aws s3api put-object --bucket $S3_BUCKET --key $CI_BUILD_REF_NAME/x86_64-unknown-linux-gnu/parity --body target/release/parity
+    - aws s3api put-object --bucket $S3_BUCKET --key $CI_BUILD_REF_NAME/x86_64-unknown-linux-gnu/parity.md5 --body parity.md5
+    - aws s3api put-object --bucket $S3_BUCKET --key $CI_BUILD_REF_NAME/x86_64-unknown-linux-gnu/"parity_"$VER"_amd64.deb" --body "parity_"$VER"_amd64.deb"
+    - aws s3api put-object --bucket $S3_BUCKET --key $CI_BUILD_REF_NAME/x86_64-unknown-linux-gnu/"parity_"$VER"_amd64.deb.md5" --body "parity_"$VER"_amd64.deb.md5"
+    - curl --data "commit=$CI_BUILD_REF&sha3=$SHA3&filename=parity&secret=$RELEASES_SECRET" http://update.parity.io:1337/push-build/$CI_BUILD_REF_NAME/x86_64-unknown-linux-gnu
+    - curl --data "commit=$CI_BUILD_REF&sha3=$SHA3&filename=parity&secret=$RELEASES_SECRET" http://update.parity.io:1338/push-build/$CI_BUILD_REF_NAME/x86_64-unknown-linux-gnu
   tags:
     - rust
     - rust-stable
@@ -47,8 +54,9 @@ linux-beta:
     - beta
     - tags
     - stable
+    - triggers
   script:
-    - cargo build --release $CARGOFLAGS
+    - cargo build -j $(nproc) --release $CARGOFLAGS
     - strip target/release/parity
   tags:
     - rust
@@ -65,8 +73,9 @@ linux-nightly:
     - beta
     - tags
     - stable
+    - triggers
   script:
-    - cargo build --release $CARGOFLAGS
+    - cargo build -j $(nproc) --release $CARGOFLAGS
     - strip target/release/parity
   tags:
     - rust
@@ -83,16 +92,23 @@ linux-centos:
     - beta
     - tags
     - stable
+    - triggers
   script:
     - export CXX="g++"
     - export CC="gcc"
-    - cargo build --release $CARGOFLAGS
+    - export PLATFORM=x86_64-unknown-centos-gnu
+    - cargo build -j $(nproc) --release --features final $CARGOFLAGS
     - strip target/release/parity
     - md5sum target/release/parity > parity.md5
+    - export SHA3=$(target/release/parity tools hash target/release/parity)
     - 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/x86_64-unknown-centos-gnu
     - aws s3api put-object --bucket builds-parity --key $CI_BUILD_REF_NAME/x86_64-unknown-centos-gnu/parity --body target/release/parity
     - aws s3api put-object --bucket builds-parity --key $CI_BUILD_REF_NAME/x86_64-unknown-centos-gnu/parity.md5 --body parity.md5
+    - curl --data "commit=$CI_BUILD_REF&sha3=$SHA3&filename=parity&secret=$RELEASES_SECRET" http://update.parity.io:1337/push-build/$CI_BUILD_REF_NAME/$PLATFORM
+    - curl --data "commit=$CI_BUILD_REF&sha3=$SHA3&filename=parity&secret=$RELEASES_SECRET" http://update.parity.io:1338/push-build/$CI_BUILD_REF_NAME/$PLATFORM
   tags:
     - rust
     - rust-centos
@@ -100,31 +116,38 @@ linux-centos:
     paths:
     - target/release/parity
     name: "x86_64-unknown-centos-gnu_parity"
-  allow_failure: true
-linux-i686:   
-  stage: build   
-  image: ethcore/rust-i686:latest   
+linux-i686:
+  stage: build
+  image: ethcore/rust-i686:latest
   only:
     - beta
-#    - tags
+    - tags
     - stable
+    - triggers
   script:
     - export HOST_CC=gcc
     - export HOST_CXX=g++
-    - cargo build --target i686-unknown-linux-gnu --release $CARGOFLAGS
-    - strip target/i686-unknown-linux-gnu/release/parity
-    - md5sum target/i686-unknown-linux-gnu/release/parity > parity.md5
+    - export COMMIT=$(git rev-parse HEAD)
+    - export PLATFORM=i686-unknown-linux-gnu
+    - cargo build -j $(nproc) --target i686-unknown-linux-gnu --features final --release $CARGOFLAGS
+    - strip target/$PLATFORM/release/parity
+    - md5sum target/$PLATFORM/release/parity > parity.md5
+    - export SHA3=$(target/$PLATFORM/release/parity tools hash target/$PLATFORM/release/parity)
     - sh scripts/deb-build.sh i386
-    - cp target/i686-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"_i386.deb"
     - md5sum "parity_"$VER"_i386.deb" > "parity_"$VER"_i386.deb.md5"
     - aws configure set aws_access_key_id $s3_key
     - aws configure set aws_secret_access_key $s3_secret
-    - aws s3api put-object --bucket builds-parity --key $CI_BUILD_REF_NAME/i686-unknown-linux-gnu/parity --body target/i686-unknown-linux-gnu/release/parity
-    - aws s3api put-object --bucket builds-parity --key $CI_BUILD_REF_NAME/i686-unknown-linux-gnu/parity.md5 --body parity.md5
-    - aws s3api put-object --bucket builds-parity --key $CI_BUILD_REF_NAME/i686-unknown-linux-gnu/"parity_"$VER"_i386.deb" --body "parity_"$VER"_i386.deb"
-    - aws s3api put-object --bucket builds-parity --key $CI_BUILD_REF_NAME/i686-unknown-linux-gnu/"parity_"$VER"_i386.deb.md5" --body "parity_"$VER"_i386.deb.md5"
+    - 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/$PLATFORM
+    - 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 $CI_BUILD_REF_NAME/$PLATFORM/parity.md5 --body parity.md5
+    - aws s3api put-object --bucket $S3_BUCKET --key $CI_BUILD_REF_NAME/$PLATFORM/"parity_"$VER"_i386.deb" --body "parity_"$VER"_i386.deb"
+    - aws s3api put-object --bucket $S3_BUCKET --key $CI_BUILD_REF_NAME/$PLATFORM/"parity_"$VER"_i386.deb.md5" --body "parity_"$VER"_i386.deb.md5"
+    - curl --data "commit=$CI_BUILD_REF&sha3=$SHA3&filename=parity&secret=$RELEASES_SECRET" http://update.parity.io:1337/push-build/$CI_BUILD_REF_NAME/$PLATFORM
+    - curl --data "commit=$CI_BUILD_REF&sha3=$SHA3&filename=parity&secret=$RELEASES_SECRET" http://update.parity.io:1338/push-build/$CI_BUILD_REF_NAME/$PLATFORM
   tags:
     - rust
     - rust-i686
@@ -140,30 +163,37 @@ linux-armv7:
     - beta
     - tags
     - stable
+    - triggers
   script:
     - export CC=arm-linux-gnueabihf-gcc
     - 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 --target armv7-unknown-linux-gnueabihf --release $CARGOFLAGS
-    - arm-linux-gnueabihf-strip target/armv7-unknown-linux-gnueabihf/release/parity
-    - md5sum target/armv7-unknown-linux-gnueabihf/release/parity > parity.md5
+    - cargo build -j $(nproc) --target $PLATFORM --features final --release $CARGOFLAGS
+    - arm-linux-gnueabihf-strip target/$PLATFORM/release/parity
+    - 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
-    - aws s3api put-object --bucket builds-parity --key $CI_BUILD_REF_NAME/armv7-unknown-linux-gnueabihf/parity --body target/armv7-unknown-linux-gnueabihf/release/parity
-    - aws s3api put-object --bucket builds-parity --key $CI_BUILD_REF_NAME/armv7-unknown-linux-gnueabihf/parity.md5 --body parity.md5
-    - aws s3api put-object --bucket builds-parity --key $CI_BUILD_REF_NAME/armv7-unknown-linux-gnueabihf/"parity_"$VER"_armhf.deb" --body "parity_"$VER"_armhf.deb"
-    - aws s3api put-object --bucket builds-parity --key $CI_BUILD_REF_NAME/armv7-unknown-linux-gnueabihf/"parity_"$VER"_armhf.deb.md5" --body "parity_"$VER"_armhf.deb.md5"
+    - 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/$PLATFORM
+    - 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 $CI_BUILD_REF_NAME/$PLATFORM/parity.md5 --body parity.md5
+    - 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 $CI_BUILD_REF_NAME/$PLATFORM/"parity_"$VER"_armhf.deb.md5" --body "parity_"$VER"_armhf.deb.md5"
+    - curl --data "commit=$CI_BUILD_REF&sha3=$SHA3&filename=parity&secret=$RELEASES_SECRET" http://update.parity.io:1337/push-build/$CI_BUILD_REF_NAME/$PLATFORM
+    - curl --data "commit=$CI_BUILD_REF&sha3=$SHA3&filename=parity&secret=$RELEASES_SECRET" http://update.parity.io:1338/push-build/$CI_BUILD_REF_NAME/$PLATFORM
   tags:
     - rust
     - rust-arm
@@ -179,30 +209,37 @@ linux-arm:
     - beta
     - tags
     - stable
+    - triggers
   script:
     - export CC=arm-linux-gnueabihf-gcc
     - 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 --target arm-unknown-linux-gnueabihf --release $CARGOFLAGS
-    - arm-linux-gnueabihf-strip target/arm-unknown-linux-gnueabihf/release/parity
-    - md5sum target/arm-unknown-linux-gnueabihf/release/parity > parity.md5
+    - cargo build -j $(nproc) --target $PLATFORM --features final --release $CARGOFLAGS
+    - arm-linux-gnueabihf-strip target/$PLATFORM/release/parity
+    - 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
-    - aws s3api put-object --bucket builds-parity --key $CI_BUILD_REF_NAME/arm-unknown-linux-gnueabihf/parity --body target/arm-unknown-linux-gnueabihf/release/parity
-    - aws s3api put-object --bucket builds-parity --key $CI_BUILD_REF_NAME/arm-unknown-linux-gnueabihf/parity.md5 --body parity.md5
-    - aws s3api put-object --bucket builds-parity --key $CI_BUILD_REF_NAME/arm-unknown-linux-gnueabihf/"parity_"$VER"_armhf.deb" --body "parity_"$VER"_armhf.deb"
-    - aws s3api put-object --bucket builds-parity --key $CI_BUILD_REF_NAME/arm-unknown-linux-gnueabihf/"parity_"$VER"_armhf.deb.md5" --body "parity_"$VER"_armhf.deb.md5"
+    - 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/$PLATFORM
+    - 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 $CI_BUILD_REF_NAME/$PLATFORM/parity.md5 --body parity.md5
+    - 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 $CI_BUILD_REF_NAME/$PLATFORM/"parity_"$VER"_armhf.deb.md5" --body "parity_"$VER"_armhf.deb.md5"
+    - curl --data "commit=$CI_BUILD_REF&sha3=$SHA3&filename=parity&secret=$RELEASES_SECRET" http://update.parity.io:1337/push-build/$CI_BUILD_REF_NAME/$PLATFORM
+    - curl --data "commit=$CI_BUILD_REF&sha3=$SHA3&filename=parity&secret=$RELEASES_SECRET" http://update.parity.io:1338/push-build/$CI_BUILD_REF_NAME/$PLATFORM
   tags:
     - rust
     - rust-arm
@@ -217,24 +254,31 @@ linux-armv6:
   only:
 #    - beta
 #    - tags
-    - stable
+#    - stable
+    - triggers
   script:
     - export CC=arm-linux-gnueabi-gcc
     - 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 --target arm-unknown-linux-gnueabi --release $CARGOFLAGS
-    - arm-linux-gnueabi-strip target/arm-unknown-linux-gnueabi/release/parity
-    - md5sum target/arm-unknown-linux-gnueabi/release/parity > parity.md5
+    - cargo build -j $(nproc) --target $PLATFORM --features final --release $CARGOFLAGS
+    - arm-linux-gnueabi-strip target/$PLATFORM/release/parity
+    - 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
-    - aws s3api put-object --bucket builds-parity --key $CI_BUILD_REF_NAME/arm-unknown-linux-gnueabi/parity --body target/arm-unknown-linux-gnueabi/release/parity
-    - aws s3api put-object --bucket builds-parity --key $CI_BUILD_REF_NAME/arm-unknown-linux-gnueabi/parity.md5 --body parity.md5
+    - 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/$PLATFORM
+    - 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 $CI_BUILD_REF_NAME/$PLATFORM/parity.md5 --body parity.md5
+    - curl --data "commit=$CI_BUILD_REF&sha3=$SHA3&filename=parity&secret=$RELEASES_SECRET" http://update.parity.io:1337/push-build/$CI_BUILD_REF_NAME/$PLATFORM
+    - curl --data "commit=$CI_BUILD_REF&sha3=$SHA3&filename=parity&secret=$RELEASES_SECRET" http://update.parity.io:1338/push-build/$CI_BUILD_REF_NAME/$PLATFORM
   tags:
     - rust
     - rust-arm
@@ -250,30 +294,36 @@ linux-aarch64:
     - beta
     - tags
     - stable
+    - triggers
   script:
     - export CC=aarch64-linux-gnu-gcc
     - 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 --target aarch64-unknown-linux-gnu --release $CARGOFLAGS
-    - aarch64-linux-gnu-strip target/aarch64-unknown-linux-gnu/release/parity
-    - md5sum target/aarch64-unknown-linux-gnu/release/parity > parity.md5
+    - cargo build -j $(nproc) --target $PLATFORM --features final --release $CARGOFLAGS
+    - aarch64-linux-gnu-strip target/$PLATFORM/release/parity
+    - 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
-    - aws s3api put-object --bucket builds-parity --key $CI_BUILD_REF_NAME/aarch64-unknown-linux-gnu/parity --body target/aarch64-unknown-linux-gnu/release/parity
-    - aws s3api put-object --bucket builds-parity --key $CI_BUILD_REF_NAME/aarch64-unknown-linux-gnu/parity.md5 --body parity.md5
-    - aws s3api put-object --bucket builds-parity --key $CI_BUILD_REF_NAME/aarch64-unknown-linux-gnu/"parity_"$VER"_arm64.deb" --body "parity_"$VER"_arm64.deb"
-    - aws s3api put-object --bucket builds-parity --key $CI_BUILD_REF_NAME/aarch64-unknown-linux-gnu/"parity_"$VER"_arm64.deb.md5" --body "parity_"$VER"_arm64.deb.md5"
+    - 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/$PLATFORM
+    - 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 $CI_BUILD_REF_NAME/$PLATFORM/"parity_"$VER"_arm64.deb" --body "parity_"$VER"_arm64.deb"
+    - aws s3api put-object --bucket $S3_BUCKET --key $CI_BUILD_REF_NAME/$PLATFORM/"parity_"$VER"_arm64.deb.md5" --body "parity_"$VER"_arm64.deb.md5"
+    - curl --data "commit=$CI_BUILD_REF&sha3=$SHA3&filename=parity&secret=$RELEASES_SECRET" http://update.parity.io:1337/push-build/$CI_BUILD_REF_NAME/$PLATFORM
+    - curl --data "commit=$CI_BUILD_REF&sha3=$SHA3&filename=parity&secret=$RELEASES_SECRET" http://update.parity.io:1338/push-build/$CI_BUILD_REF_NAME/$PLATFORM
   tags:
     - rust
     - rust-arm
@@ -288,20 +338,29 @@ darwin:
     - beta
     - tags
     - stable
+    - triggers
   script:
-    - cargo build --release -p ethstore $CARGOFLAGS
-    - cargo build --release $CARGOFLAGS
+    - export COMMIT=$(git rev-parse HEAD)
+    - export PLATFORM=x86_64-apple-darwin
+    - cargo build -j 8 --features final --release #$CARGOFLAGS
+    - cargo build -j 8 --features final --release -p ethstore #$CARGOFLAGS
     - rm -rf parity.md5
     - md5sum target/release/parity > parity.md5
+    - export SHA3=$(target/release/parity tools hash target/release/parity)
     - packagesbuild -v mac/Parity.pkgproj
-    - mv target/release/Parity\ Ethereum.pkg parity-osx-installer-EXPERIMENTAL.pkg
-    - md5sum parity-osx-installer-EXPERIMENTAL.pkg > parity-osx-installer-EXPERIMENTAL.pkg.md5
+    - export VER=$(grep -m 1 version Cargo.toml | awk '{print $3}' | tr -d '"' | tr -d "\n")
+    - mv target/release/Parity\ Ethereum.pkg "parity-"$VER"-osx-installer-EXPERIMENTAL.pkg"
+    - md5sum "parity-"$VER"-osx-installer-EXPERIMENTAL.pkg" >> "parity-"$VER"-osx-installer-EXPERIMENTAL.pkg.md5"
     - aws configure set aws_access_key_id $s3_key
     - aws configure set aws_secret_access_key $s3_secret
-    - aws s3api put-object --bucket builds-parity --key $CI_BUILD_REF_NAME/x86_64-apple-darwin/parity --body target/release/parity
-    - aws s3api put-object --bucket builds-parity --key $CI_BUILD_REF_NAME/x86_64-apple-darwin/parity.md5 --body parity.md5
-    - aws s3api put-object --bucket builds-parity --key $CI_BUILD_REF_NAME/x86_64-apple-darwin/parity-osx-installer-EXPERIMENTAL.pkg --body parity-osx-installer-EXPERIMENTAL.pkg
-    - aws s3api put-object --bucket builds-parity --key $CI_BUILD_REF_NAME/x86_64-apple-darwin/parity-osx-installer-EXPERIMENTAL.pkg.md5 --body parity-osx-installer-EXPERIMENTAL.pkg.md5
+    - 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/$PLATFORM
+    - aws s3api put-object --bucket $S3_BUCKET --key $CI_BUILD_REF_NAME/$PLATFORM/parity --body target/release/parity
+    - 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 $CI_BUILD_REF_NAME/$PLATFORM/"parity-"$VER"-osx-installer-EXPERIMENTAL.pkg" --body "parity-"$VER"-osx-installer-EXPERIMENTAL.pkg"
+    - aws s3api put-object --bucket $S3_BUCKET --key $CI_BUILD_REF_NAME/$PLATFORM/"parity-"$VER"-osx-installer-EXPERIMENTAL.pkg.md5" --body "parity-"$VER"-osx-installer-EXPERIMENTAL.pkg.md5"
+    - curl --data "commit=$CI_BUILD_REF&sha3=$SHA3&filename=parity&secret=$RELEASES_SECRET" http://update.parity.io:1337/push-build/$CI_BUILD_REF_NAME/$PLATFORM
+    - curl --data "commit=$CI_BUILD_REF&sha3=$SHA3&filename=parity&secret=$RELEASES_SECRET" http://update.parity.io:1338/push-build/$CI_BUILD_REF_NAME/$PLATFORM
   tags:
     - osx
   artifacts:
@@ -317,16 +376,20 @@ windows:
     - beta
     - tags
     - stable
+    - triggers
   script:
+    - set PLATFORM=x86_64-pc-windows-msvc
     - set INCLUDE=C:\Program Files (x86)\Microsoft SDKs\Windows\v7.1A\Include;C:\vs2015\VC\include;C:\Program Files (x86)\Windows Kits\10\Include\10.0.10240.0\ucrt
     - set LIB=C:\vs2015\VC\lib;C:\Program Files (x86)\Windows Kits\10\Lib\10.0.10240.0\ucrt\x64
     - set RUST_BACKTRACE=1
-    - set RUSTFLAGS=%RUSTFLAGS% 
+    - set RUSTFLAGS=%RUSTFLAGS%
     - rustup default stable-x86_64-pc-windows-msvc
-    - cargo build --release %CARGOFLAGS%
+    - cargo build --features final --release #%CARGOFLAGS%
+    - signtool sign /f %keyfile% /p %certpass% target\release\parity.exe
+    - target\release\parity.exe tools hash target\release\parity.exe > parity.sha3
+    - set /P SHA3=<parity.sha3
     - curl -sL --url "https://github.com/ethcore/win-build/raw/master/SimpleFC.dll" -o nsis\SimpleFC.dll
     - curl -sL --url "https://github.com/ethcore/win-build/raw/master/vc_redist.x64.exe" -o nsis\vc_redist.x64.exe
-    - signtool sign /f %keyfile% /p %certpass% target\release\parity.exe
     - msbuild windows\ptray\ptray.vcxproj /p:Platform=x64 /p:Configuration=Release
     - signtool sign /f %keyfile% /p %certpass% windows\ptray\x64\release\ptray.exe
     - cd nsis
@@ -344,14 +407,22 @@ windows:
     - cd ..\..
     - aws configure set aws_access_key_id %s3_key%
     - aws configure set aws_secret_access_key %s3_secret%
-    - aws s3api put-object --bucket builds-parity --key %CI_BUILD_REF_NAME%/x86_64-pc-windows-msvc/parity.exe --body target\release\parity.exe
-    - aws s3api put-object --bucket builds-parity --key %CI_BUILD_REF_NAME%/x86_64-pc-windows-msvc/parity.exe.md5 --body target\release\parity.exe.md5
-    - aws s3api put-object --bucket builds-parity --key %CI_BUILD_REF_NAME%/x86_64-pc-windows-msvc/parity.zip --body target\release\parity.zip
-    - aws s3api put-object --bucket builds-parity --key %CI_BUILD_REF_NAME%/x86_64-pc-windows-msvc/parity.zip.md5 --body target\release\parity.zip.md5
-    - aws s3api put-object --bucket builds-parity --key %CI_BUILD_REF_NAME%/x86_64-pc-windows-msvc/InstallParity.exe --body nsis\InstallParity.exe
-    - aws s3api put-object --bucket builds-parity --key %CI_BUILD_REF_NAME%/x86_64-pc-windows-msvc/InstallParity.exe.md5 --body nsis\InstallParity.exe.md5
-    - aws s3api put-object --bucket builds-parity --key %CI_BUILD_REF_NAME%/x86_64-pc-windows-msvc/win-installer.zip --body nsis\win-installer.zip
-    - aws s3api put-object --bucket builds-parity --key %CI_BUILD_REF_NAME%/x86_64-pc-windows-msvc/win-installer.zip.md5 --body nsis\win-installer.zip.md5
+    - echo %CI_BUILD_REF_NAME%
+    - echo %CI_BUILD_REF_NAME% | findstr /R "master" >nul 2>&1 && set S3_BUCKET=builds-parity-published || set S3_BUCKET=builds-parity
+    - echo %CI_BUILD_REF_NAME% | findstr /R "beta" >nul 2>&1 && set S3_BUCKET=builds-parity-published || set S3_BUCKET=builds-parity
+    - echo %CI_BUILD_REF_NAME% | findstr /R "stable" >nul 2>&1 && set S3_BUCKET=builds-parity-published || set S3_BUCKET=builds-parity
+    - echo %S3_BUCKET%
+    - aws s3 rm --recursive s3://%S3_BUCKET%/%CI_BUILD_REF_NAME%/x86_64-pc-windows-msvc
+    - aws s3api put-object --bucket %S3_BUCKET% --key %CI_BUILD_REF_NAME%/x86_64-pc-windows-msvc/parity.exe --body target\release\parity.exe
+    - aws s3api put-object --bucket %S3_BUCKET% --key %CI_BUILD_REF_NAME%/x86_64-pc-windows-msvc/parity.exe.md5 --body target\release\parity.exe.md5
+    - aws s3api put-object --bucket %S3_BUCKET% --key %CI_BUILD_REF_NAME%/x86_64-pc-windows-msvc/parity.zip --body target\release\parity.zip
+    - aws s3api put-object --bucket %S3_BUCKET% --key %CI_BUILD_REF_NAME%/x86_64-pc-windows-msvc/parity.zip.md5 --body target\release\parity.zip.md5
+    - aws s3api put-object --bucket %S3_BUCKET% --key %CI_BUILD_REF_NAME%/x86_64-pc-windows-msvc/InstallParity.exe --body nsis\InstallParity.exe
+    - aws s3api put-object --bucket %S3_BUCKET% --key %CI_BUILD_REF_NAME%/x86_64-pc-windows-msvc/InstallParity.exe.md5 --body nsis\InstallParity.exe.md5
+    - aws s3api put-object --bucket %S3_BUCKET% --key %CI_BUILD_REF_NAME%/x86_64-pc-windows-msvc/win-installer.zip --body nsis\win-installer.zip
+    - aws s3api put-object --bucket %S3_BUCKET% --key %CI_BUILD_REF_NAME%/x86_64-pc-windows-msvc/win-installer.zip.md5 --body nsis\win-installer.zip.md5
+    - curl --data "commit=%CI_BUILD_REF%&sha3=%SHA3%&filename=parity.exe&secret=%RELEASES_SECRET%" http://update.parity.io:1337/push-build/%CI_BUILD_REF_NAME%/%PLATFORM%
+    - curl --data "commit=%CI_BUILD_REF%&sha3=%SHA3%&filename=parity.exe&secret=%RELEASES_SECRET%" http://update.parity.io:1338/push-build/%CI_BUILD_REF_NAME%/%PLATFORM%
   tags:
    - rust-windows
   artifacts:
@@ -363,27 +434,25 @@ windows:
 test-darwin:
   stage: test
   only:
-#    - beta
-#    - tags
-    - stable
+    - triggers
   before_script:
     - git submodule update --init --recursive
+    - export RUST_FILES_MODIFIED=$(git --no-pager diff --name-only $CI_BUILD_REF^ $CI_BUILD_REF | grep -v -e ^js -e ^\\. -e ^LICENSE -e ^README.md -e ^appveyor.yml -e ^test.sh -e ^windows/ -e ^scripts/ -e^mac/ -e ^nsis/ | wc -l)
   script:
     - export RUST_BACKTRACE=1
-    - ./test.sh $CARGOFLAGS --no-release
+    - if [ $RUST_FILES_MODIFIED -eq 0 ]; then echo "Skipping Rust tests since no Rust files modified."; else ./test.sh $CARGOFLAGS; fi
   tags:
     - osx
+  allow_failure: true
 test-windows:
   stage: test
   only:
-#    - beta
-#    - tags
-    - stable
+    - triggers
   before_script:
     - git submodule update --init --recursive
   script:
     - set RUST_BACKTRACE=1
-    - cargo test --features json-tests -p rlp -p ethash -p ethcore -p ethcore-bigint -p ethcore-dapps -p ethcore-rpc -p ethcore-signer -p ethcore-util -p ethcore-network -p ethcore-io -p ethkey -p ethstore -p ethsync -p ethcore-ipc -p ethcore-ipc-tests -p ethcore-ipc-nano -p parity %CARGOFLAGS% --verbose --release
+    - echo cargo test --features json-tests -p rlp -p ethash -p ethcore -p ethcore-bigint -p ethcore-dapps -p ethcore-rpc -p ethcore-signer -p ethcore-util -p ethcore-network -p ethcore-io -p ethkey -p ethstore -p ethsync -p ethcore-ipc -p ethcore-ipc-tests -p ethcore-ipc-nano -p parity %CARGOFLAGS% --verbose --release
   tags:
     - rust-windows
   allow_failure: true
@@ -392,27 +461,55 @@ test-rust-stable:
   image: ethcore/rust:stable
   before_script:
     - git submodule update --init --recursive
-    - export JS_FILES_MODIFIED=$(git --no-pager diff --name-only $CI_BUILD_REF $CI_BUILD_REF@{1} | grep \.js | wc -l)
-    - echo $JS_FILES_MODIFIED
-    - if [ -z $JS_FILES_MODIFIED ]; then echo "skip js test"; fi
+    - export RUST_FILES_MODIFIED=$(git --no-pager diff --name-only $CI_BUILD_REF^ $CI_BUILD_REF | grep -v -e ^js -e ^\\. -e ^LICENSE -e ^README.md -e ^appveyor.yml -e ^test.sh -e ^windows/ -e ^scripts/ -e^mac/ -e ^nsis/ | wc -l)
   script:
     - export RUST_BACKTRACE=1
-    - echo $JS_FILES_MODIFIED
-    - if [ -z $JS_FILES_MODIFIED ]; then echo "skip js test"; else ./test.sh $CARGOFLAGS --no-release; fi
+    - if [ $RUST_FILES_MODIFIED -eq 0 ]; then echo "Skipping Rust tests since no Rust files modified."; else ./test.sh $CARGOFLAGS; fi
   tags:
     - rust
     - rust-stable
-js-tests:
+js-test:
   stage: test
   image: ethcore/rust:stable
   before_script:
-    - ./js/scripts/install-deps.sh
+    - git submodule update --init --recursive
+    - export JS_FILES_MODIFIED=$(git --no-pager diff --name-only $CI_BUILD_REF^ $CI_BUILD_REF | grep ^js/ | wc -l)
+    - if [ $JS_FILES_MODIFIED -eq 0 ]; then echo "Skipping JS deps install since no JS files modified."; else ./js/scripts/install-deps.sh;fi
   script:
-    - ./js/scripts/lint.sh
-    - ./js/scripts/test.sh
-    - ./js/scripts/build.sh
+    - if [ $JS_FILES_MODIFIED -eq 0 ]; then echo "Skipping JS lint since no JS files modified."; else ./js/scripts/lint.sh && ./js/scripts/test.sh && ./js/scripts/build.sh; fi
   tags:
-    - javascript-test
+    - rust
+    - rust-stable
+test-rust-beta:
+  stage: test
+  only:
+    - triggers
+  image: ethcore/rust:beta
+  before_script:
+    - git submodule update --init --recursive
+    - export RUST_FILES_MODIFIED=$(git --no-pager diff --name-only $CI_BUILD_REF^ $CI_BUILD_REF | grep -v -e ^js -e ^\\. -e ^LICENSE -e ^README.md -e ^appveyor.yml -e ^test.sh -e ^windows/ -e ^scripts/ -e^mac/ -e ^nsis/ | wc -l)
+  script:
+    - export RUST_BACKTRACE=1
+    - if [ $RUST_FILES_MODIFIED -eq 0 ]; then echo "Skipping Rust tests since no Rust files modified."; else ./test.sh $CARGOFLAGS; fi
+  tags:
+    - rust
+    - rust-beta
+  allow_failure: true
+test-rust-nightly:
+  stage: test
+  only:
+    - triggers
+  image: ethcore/rust:nightly
+  before_script:
+    - git submodule update --init --recursive
+    - export RUST_FILES_MODIFIED=$(git --no-pager diff --name-only $CI_BUILD_REF^ $CI_BUILD_REF | grep -v -e ^js -e ^\\. -e ^LICENSE -e ^README.md -e ^appveyor.yml -e ^test.sh -e ^windows/ -e ^scripts/ -e^mac/ -e ^nsis/ | wc -l)
+  script:
+    - export RUST_BACKTRACE=1
+    - if [ $RUST_FILES_MODIFIED -eq 0 ]; then echo "Skipping Rust tests since no Rust files modified."; else ./test.sh $CARGOFLAGS; fi
+  tags:
+    - rust
+    - rust-nightly
+  allow_failure: true
 js-release:
   stage: js-build
   only:
@@ -421,9 +518,22 @@ js-release:
     - stable
   image: ethcore/rust:stable
   before_script:
-    - ./js/scripts/install-deps.sh
+    - export JS_FILES_MODIFIED=$(git --no-pager diff --name-only $CI_BUILD_REF^ $CI_BUILD_REF | grep ^js/ | wc -l)
+    - echo $JS_FILES_MODIFIED
+    - if [ $JS_FILES_MODIFIED -eq 0  ]; then echo "Skipping JS deps install since no JS files modified."; else ./js/scripts/install-deps.sh;fi
   script:
-    - ./js/scripts/build.sh
-    - ./js/scripts/release.sh
+    - echo $JS_FILES_MODIFIED
+    - if [ $JS_FILES_MODIFIED -eq 0 ]; then echo "Skipping JS rebuild since no JS files modified."; else ./js/scripts/build.sh && ./js/scripts/release.sh; fi
   tags:
     - javascript
+push-release:
+  stage: push-release
+  only:
+    - tags
+    - triggers
+  image: ethcore/rust:stable
+  script:
+    - curl --data "secret=$RELEASES_SECRET" http://update.parity.io:1337/push-release/$CI_BUILD_REF_NAME/$CI_BUILD_REF
+    - curl --data "secret=$RELEASES_SECRET" http://update.parity.io:1338/push-release/$CI_BUILD_REF_NAME/$CI_BUILD_REF
+  tags:
+    - curl

.travis.yml

@@ -16,8 +16,8 @@ git:
 matrix:
   include:
   - rust: stable
-    env: RUN_TESTS="true" TEST_OPTIONS="--no-release"
-  - rust: beta
+    env: RUN_TESTS="true" TEST_OPTIONS=""
+  - rust: stable
     env: RUN_COVERAGE="true"
   - rust: stable
     env: RUN_DOCS="true"
@@ -71,8 +71,7 @@ install:
 script:
   - if [ "$RUN_TESTS" = "true" ]; then
       ./js/scripts/lint.sh &&
-      ./js/scripts/test.sh &&
-      ./test.sh $TEST_OPTIONS --verbose;
+      travis_wait 40 ./test.sh $TEST_OPTIONS;
     fi
   - if [ "$RUN_COVERAGE" = "true" ]; then ./scripts/cov.sh "$KCOV_CMD"; fi
 

Cargo.toml

@@ -1,9 +1,9 @@
 [package]
-description = "Ethcore client."
+description = "Parity Ethereum client"
 name = "parity"
-version = "1.4.4"
+version = "1.5.0"
 license = "GPL-3.0"
-authors = ["Ethcore <admin@ethcore.io>"]
+authors = ["Parity Technologies <admin@parity.io>"]
 build = "build.rs"
 
 [build-dependencies]
@@ -20,7 +20,7 @@ time = "0.1"
 num_cpus = "0.2"
 number_prefix = "0.2"
 rpassword = "0.2.1"
-semver = "0.2"
+semver = "0.5"
 ansi_term = "0.7"
 lazy_static = "0.2"
 regex = "0.1"
@@ -28,25 +28,31 @@ isatty = "0.1"
 toml = "0.2"
 serde = "0.8.0"
 serde_json = "0.8.0"
+app_dirs = "1.1.1"
 hyper = { version = "0.9", default-features = false }
 ctrlc = { git = "https://github.com/ethcore/rust-ctrlc.git" }
-json-ipc-server = { git = "https://github.com/ethcore/json-ipc-server.git" }
-fdlimit = { path = "util/fdlimit" }
+fdlimit = "0.1"
+clippy = { version = "0.0.103", optional = true}
+rlp = { path = "util/rlp" }
+ethsync = { path = "sync" }
 ethcore = { path = "ethcore" }
 ethcore-util = { path = "util" }
-ethsync = { path = "sync" }
 ethcore-io = { path = "util/io" }
 ethcore-devtools = { path = "devtools" }
 ethcore-rpc = { path = "rpc" }
 ethcore-signer = { path = "signer" }
-ethcore-ipc-nano = { path = "ipc/nano" }
 ethcore-ipc = { path = "ipc/rpc" }
+ethcore-ipc-nano = { path = "ipc/nano" }
 ethcore-ipc-hypervisor = { path = "ipc/hypervisor" }
 ethcore-logger = { path = "logger" }
-rlp = { path = "util/rlp" }
 ethcore-stratum = { path = "stratum" }
 ethcore-dapps = { path = "dapps", optional = true }
-clippy = { version = "0.0.96", optional = true}
+rpc-cli = { path = "rpc_cli" }
+parity-rpc-client = { path = "rpc_client" }
+ethcore-light = { path = "ethcore/light" }
+parity-hash-fetch = { path = "hash-fetch" }
+parity-updater = { path = "updater" }
+parity-reactor = { path = "util/reactor" }
 
 [target.'cfg(windows)'.dependencies]
 winapi = "0.2"
@@ -56,7 +62,6 @@ daemonize = "0.2"
 
 [features]
 default = ["ui-precompiled"]
-
 ui = [
 	"dapps",
 	"ethcore-dapps/ui",
@@ -67,7 +72,6 @@ ui-precompiled = [
 	"ethcore-signer/ui-precompiled",
 	"ethcore-dapps/ui-precompiled",
 ]
-
 dapps = ["ethcore-dapps"]
 ipc = ["ethcore/ipc", "ethsync/ipc"]
 jit = ["ethcore/jit"]
@@ -80,6 +84,7 @@ ethstore-cli = ["ethcore/ethstore-cli"]
 evm-debug = ["ethcore/evm-debug"]
 evm-debug-tests = ["ethcore/evm-debug-tests"]
 slow-blocks = ["ethcore/slow-blocks"]
+final = ["ethcore-util/final"]
 
 [[bin]]
 path = "parity/main.rs"
@@ -88,4 +93,4 @@ name = "parity"
 [profile.release]
 debug = false
 lto = false
-
+panic = "abort"

README.md

@@ -58,11 +58,18 @@ Parity is fully compatible with Stable Rust.
 
 We recommend installing Rust through [rustup](https://www.rustup.rs/). If you don't already have rustup, you can install it like this:
 
-- Linux and OSX:
+- Linux:
+	```bash
+	$ curl https://sh.rustup.rs -sSf | sh
+	```
+	
+	Parity also requires `gcc`, `g++`, `libssl-dev`/`openssl` and `pkg-config` packages to be installed.
+- OSX:
 	```bash
 	$ curl https://sh.rustup.rs -sSf | sh
 	```
 
+	`clang` is required. It comes with Xcode command line tools or can be installed with homebrew.
 - Windows
 
     Make sure you have Visual Studio 2015 with C++ support installed. Next, download and run the rustup installer from
@@ -96,6 +103,14 @@ $ cargo build --release
 
 This will produce an executable in the `./target/release` subdirectory.
 
+----
+
+## Simple one-line installer for Mac and Ubuntu
+
+```bash
+bash <(curl https://get.parity.io -Lk)
+```
+
 ## Start Parity
 ### Manually
 To start Parity manually, just run

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:
@@ -19,10 +19,10 @@ branches:
 install:
   - git submodule update --init --recursive
   - ps: Install-Product node 6
-  - ps: Start-FileDownload "https://static.rust-lang.org/dist/rust-1.12.0-x86_64-pc-windows-msvc.exe"
+  - ps: Start-FileDownload "https://static.rust-lang.org/dist/rust-1.13.0-x86_64-pc-windows-msvc.exe"
   - ps: Start-FileDownload "https://github.com/ethcore/win-build/raw/master/SimpleFC.dll" -FileName nsis\SimpleFC.dll
   - ps: Start-FileDownload "https://github.com/ethcore/win-build/raw/master/vc_redist.x64.exe" -FileName nsis\vc_redist.x64.exe
-  - rust-1.12.0-x86_64-pc-windows-msvc.exe /VERYSILENT /NORESTART /DIR="C:\Program Files (x86)\Rust"
+  - rust-1.13.0-x86_64-pc-windows-msvc.exe /VERYSILENT /NORESTART /DIR="C:\Program Files (x86)\Rust"
   - SET PATH=%PATH%;C:\Program Files (x86)\Rust\bin;C:\Program Files (x86)\NSIS;C:\Program Files (x86)\Microsoft SDKs\Windows\v7.1A\Bin
   - rustc -V
   - cargo -V

build.rs

@@ -1,4 +1,4 @@
-// Copyright 2015, 2016 Ethcore (UK) Ltd.
+// Copyright 2015, 2016 Parity Technologies (UK) Ltd.
 // This file is part of Parity.
 
 // Parity is free software: you can redistribute it and/or modify

dapps/Cargo.toml

@@ -1,29 +1,30 @@
 [package]
 description = "Parity Dapps crate"
 name = "ethcore-dapps"
-version = "1.4.0"
+version = "1.5.0"
 license = "GPL-3.0"
-authors = ["Ethcore <admin@ethcore.io"]
+authors = ["Parity Technologies <admin@parity.io>"]
 build = "build.rs"
 
 [lib]
 
 [dependencies]
-rand = "0.3.14"
+rand = "0.3"
 log = "0.3"
 env_logger = "0.3"
-jsonrpc-core = "3.0"
-jsonrpc-http-server = { git = "https://github.com/ethcore/jsonrpc-http-server.git" }
+futures = "0.1"
+jsonrpc-core = { git = "https://github.com/ethcore/jsonrpc.git", branch="mio-old" }
+jsonrpc-http-server = { git = "https://github.com/ethcore/jsonrpc.git", branch="mio-old" }
 hyper = { default-features = false, git = "https://github.com/ethcore/hyper" }
 unicase = "1.3"
 url = "1.0"
 rustc-serialize = "0.3"
 serde = "0.8"
 serde_json = "0.8"
-ethabi = "0.2.2"
 linked-hash-map = "0.3"
 parity-dapps-glue = "1.4"
 mime = "0.2"
+mime_guess = "1.6.1"
 time = "0.1.35"
 serde_macros = { version = "0.8", optional = true }
 zip = { version = "0.1", default-features = false }
@@ -32,9 +33,10 @@ ethcore-rpc = { path = "../rpc" }
 ethcore-util = { path = "../util" }
 fetch = { path = "../util/fetch" }
 parity-ui = { path = "./ui" }
+parity-hash-fetch = { path = "../hash-fetch" }
+parity-reactor = { path = "../util/reactor" }
 
-mime_guess = { version = "1.6.1" }
-clippy = { version = "0.0.96", optional = true}
+clippy = { version = "0.0.103", optional = true}
 
 [build-dependencies]
 serde_codegen = { version = "0.8", optional = true }

dapps/build.rs

@@ -1,4 +1,4 @@
-// Copyright 2015, 2016 Ethcore (UK) Ltd.
+// Copyright 2015, 2016 Parity Technologies (UK) Ltd.
 // This file is part of Parity.
 
 // Parity is free software: you can redistribute it and/or modify

dapps/js-glue/Cargo.toml

@@ -1,9 +1,9 @@
 [package]
 description = "Base Package for all Parity built-in dapps"
 name = "parity-dapps-glue"
-version = "1.4.0"
+version = "1.5.0"
 license = "GPL-3.0"
-authors = ["Ethcore <admin@ethcore.io"]
+authors = ["Parity Technologies <admin@parity.io>"]
 build = "build.rs"
 
 [build-dependencies]

dapps/js-glue/build.rs

@@ -1,4 +1,4 @@
-// Copyright 2015, 2016 Ethcore (UK) Ltd.
+// Copyright 2015, 2016 Parity Technologies (UK) Ltd.
 // This file is part of Parity.
 
 // Parity is free software: you can redistribute it and/or modify

dapps/js-glue/src/codegen.rs

@@ -1,4 +1,4 @@
-// Copyright 2015, 2016 Ethcore (UK) Ltd.
+// Copyright 2015, 2016 Parity Technologies (UK) Ltd.
 // This file is part of Parity.
 
 // Parity is free software: you can redistribute it and/or modify

dapps/js-glue/src/js.rs

@@ -1,4 +1,4 @@
-// Copyright 2015, 2016 Ethcore (UK) Ltd.
+// Copyright 2015, 2016 Parity Technologies (UK) Ltd.
 // This file is part of Parity.
 
 // Parity is free software: you can redistribute it and/or modify

dapps/js-glue/src/lib.rs

@@ -1,4 +1,4 @@
-// Copyright 2015, 2016 Ethcore (UK) Ltd.
+// Copyright 2015, 2016 Parity Technologies (UK) Ltd.
 // This file is part of Parity.
 
 // Parity is free software: you can redistribute it and/or modify

dapps/js-glue/src/lib.rs.in

@@ -1,4 +1,4 @@
-// Copyright 2015, 2016 Ethcore (UK) Ltd.
+// Copyright 2015, 2016 Parity Technologies (UK) Ltd.
 // This file is part of Parity.
 
 // Parity is free software: you can redistribute it and/or modify

dapps/src/api/api.rs

@@ -1,4 +1,4 @@
-// Copyright 2015, 2016 Ethcore (UK) Ltd.
+// Copyright 2015, 2016 Parity Technologies (UK) Ltd.
 // This file is part of Parity.
 
 // Parity is free software: you can redistribute it and/or modify
@@ -23,7 +23,7 @@ use hyper::header::AccessControlAllowOrigin;
 
 use api::types::{App, ApiError};
 use api::response;
-use apps::fetcher::ContentFetcher;
+use apps::fetcher::Fetcher;
 
 use handlers::extract_url;
 use endpoint::{Endpoint, Endpoints, Handler, EndpointPath};
@@ -33,11 +33,11 @@ use jsonrpc_http_server::cors;
 pub struct RestApi {
 	cors_domains: Option<Vec<AccessControlAllowOrigin>>,
 	endpoints: Arc<Endpoints>,
-	fetcher: Arc<ContentFetcher>,
+	fetcher: Arc<Fetcher>,
 }
 
 impl RestApi {
-	pub fn new(cors_domains: Vec<String>, endpoints: Arc<Endpoints>, fetcher: Arc<ContentFetcher>) -> Box<Endpoint> {
+	pub fn new(cors_domains: Vec<String>, endpoints: Arc<Endpoints>, fetcher: Arc<Fetcher>) -> Box<Endpoint> {
 		Box::new(RestApi {
 			cors_domains: Some(cors_domains.into_iter().map(AccessControlAllowOrigin::Value).collect()),
 			endpoints: endpoints,

dapps/src/api/mod.rs

@@ -1,4 +1,4 @@
-// Copyright 2015, 2016 Ethcore (UK) Ltd.
+// Copyright 2015, 2016 Parity Technologies (UK) Ltd.
 // This file is part of Parity.
 
 // Parity is free software: you can redistribute it and/or modify

dapps/src/api/response.rs

@@ -1,4 +1,4 @@
-// Copyright 2015, 2016 Ethcore (UK) Ltd.
+// Copyright 2015, 2016 Parity Technologies (UK) Ltd.
 // This file is part of Parity.
 
 // Parity is free software: you can redistribute it and/or modify

dapps/src/api/types.rs

@@ -1,4 +1,4 @@
-// Copyright 2015, 2016 Ethcore (UK) Ltd.
+// Copyright 2015, 2016 Parity Technologies (UK) Ltd.
 // This file is part of Parity.
 
 // Parity is free software: you can redistribute it and/or modify

dapps/src/api/types.rs.in

@@ -1,4 +1,4 @@
-// Copyright 2015, 2016 Ethcore (UK) Ltd.
+// Copyright 2015, 2016 Parity Technologies (UK) Ltd.
 // This file is part of Parity.
 
 // Parity is free software: you can redistribute it and/or modify
@@ -17,6 +17,7 @@
 use endpoint::EndpointInfo;
 
 #[derive(Debug, PartialEq, Clone, Serialize, Deserialize)]
+#[serde(deny_unknown_fields)]
 pub struct App {
 	pub id: String,
 	pub name: String,
@@ -54,6 +55,7 @@ impl Into<EndpointInfo> for App {
 }
 
 #[derive(Debug, PartialEq, Serialize, Deserialize)]
+#[serde(deny_unknown_fields)]
 pub struct ApiError {
 	pub code: String,
 	pub title: String,

dapps/src/apps/cache.rs

@@ -1,4 +1,4 @@
-// Copyright 2015, 2016 Ethcore (UK) Ltd.
+// Copyright 2015, 2016 Parity Technologies (UK) Ltd.
 // This file is part of Parity.
 
 // Parity is free software: you can redistribute it and/or modify
@@ -17,14 +17,13 @@
 //! Fetchable Dapps support.
 
 use std::fs;
-use std::sync::{Arc};
 
 use linked_hash_map::LinkedHashMap;
 use page::LocalPageEndpoint;
 use handlers::FetchControl;
 
 pub enum ContentStatus {
-	Fetching(Arc<FetchControl>),
+	Fetching(FetchControl),
 	Ready(LocalPageEndpoint),
 }
 

dapps/src/apps/fetcher.rs

@@ -1,440 +0,0 @@
-// Copyright 2015, 2016 Ethcore (UK) Ltd.
-// This file is part of Parity.
-
-// Parity is free software: you can redistribute it and/or modify
-// it under the terms of the GNU General Public License as published by
-// the Free Software Foundation, either version 3 of the License, or
-// (at your option) any later version.
-
-// Parity is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU General Public License for more details.
-
-// You should have received a copy of the GNU General Public License
-// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
-
-//! Fetchable Dapps support.
-//! Manages downloaded (cached) Dapps and downloads them when necessary.
-//! Uses `URLHint` to resolve addresses into Dapps bundle file location.
-
-use zip;
-use std::{fs, env, fmt};
-use std::io::{self, Read, Write};
-use std::path::PathBuf;
-use std::sync::Arc;
-use rustc_serialize::hex::FromHex;
-
-use hyper;
-use hyper::status::StatusCode;
-
-use random_filename;
-use SyncStatus;
-use util::{Mutex, H256};
-use util::sha3::sha3;
-use page::{LocalPageEndpoint, PageCache};
-use handlers::{ContentHandler, ContentFetcherHandler, ContentValidator};
-use endpoint::{Endpoint, EndpointPath, Handler};
-use apps::cache::{ContentCache, ContentStatus};
-use apps::manifest::{MANIFEST_FILENAME, deserialize_manifest, serialize_manifest, Manifest};
-use apps::urlhint::{URLHintContract, URLHint, URLHintResult};
-
-/// Limit of cached dapps/content
-const MAX_CACHED_DAPPS: usize = 20;
-
-pub struct ContentFetcher<R: URLHint = URLHintContract> {
-	dapps_path: PathBuf,
-	resolver: R,
-	cache: Arc<Mutex<ContentCache>>,
-	sync: Arc<SyncStatus>,
-	embeddable_on: Option<(String, u16)>,
-}
-
-impl<R: URLHint> Drop for ContentFetcher<R> {
-	fn drop(&mut self) {
-		// Clear cache path
-		let _ = fs::remove_dir_all(&self.dapps_path);
-	}
-}
-
-impl<R: URLHint> ContentFetcher<R> {
-
-	pub fn new(resolver: R, sync_status: Arc<SyncStatus>, embeddable_on: Option<(String, u16)>) -> Self {
-		let mut dapps_path = env::temp_dir();
-		dapps_path.push(random_filename());
-
-		ContentFetcher {
-			dapps_path: dapps_path,
-			resolver: resolver,
-			sync: sync_status,
-			cache: Arc::new(Mutex::new(ContentCache::default())),
-			embeddable_on: embeddable_on,
-		}
-	}
-
-	fn still_syncing(address: Option<(String, u16)>) -> Box<Handler> {
-		Box::new(ContentHandler::error(
-			StatusCode::ServiceUnavailable,
-			"Sync In Progress",
-			"Your node is still syncing. We cannot resolve any content before it's fully synced.",
-			Some("<a href=\"javascript:window.location.reload()\">Refresh</a>"),
-			address,
-		))
-	}
-
-	#[cfg(test)]
-	fn set_status(&self, content_id: &str, status: ContentStatus) {
-		self.cache.lock().insert(content_id.to_owned(), status);
-	}
-
-	pub fn contains(&self, content_id: &str) -> bool {
-		{
-			let mut cache = self.cache.lock();
-			// Check if we already have the app
-			if cache.get(content_id).is_some() {
-				return true;
-			}
-		}
-		// fallback to resolver
-		if let Ok(content_id) = content_id.from_hex() {
-			// else try to resolve the app_id
-			let has_content = self.resolver.resolve(content_id).is_some();
-			// if there is content or we are syncing return true
-			has_content || self.sync.is_major_importing()
-		} else {
-			false
-		}
-	}
-
-	pub fn to_async_handler(&self, path: EndpointPath, control: hyper::Control) -> Box<Handler> {
-		let mut cache = self.cache.lock();
-		let content_id = path.app_id.clone();
-
-		let (new_status, handler) = {
-			let status = cache.get(&content_id);
-			match status {
-				// Just serve the content
-				Some(&mut ContentStatus::Ready(ref endpoint)) => {
-					(None, endpoint.to_async_handler(path, control))
-				},
-				// Content is already being fetched
-				Some(&mut ContentStatus::Fetching(ref fetch_control)) => {
-					trace!(target: "dapps", "Content fetching in progress. Waiting...");
-					(None, fetch_control.to_handler(control))
-				},
-				// We need to start fetching the content
-				None => {
-					trace!(target: "dapps", "Content unavailable. Fetching... {:?}", content_id);
-					let content_hex = content_id.from_hex().expect("to_handler is called only when `contains` returns true.");
-					let content = self.resolver.resolve(content_hex);
-
-					let cache = self.cache.clone();
-					let on_done = move |id: String, result: Option<LocalPageEndpoint>| {
-						let mut cache = cache.lock();
-						match result {
-							Some(endpoint) => {
-								cache.insert(id, ContentStatus::Ready(endpoint));
-							},
-							// In case of error
-							None => {
-								cache.remove(&id);
-							},
-						}
-					};
-
-					match content {
-						// Don't serve dapps if we are still syncing (but serve content)
-						Some(URLHintResult::Dapp(_)) if self.sync.is_major_importing() => {
-							(None, Self::still_syncing(self.embeddable_on.clone()))
-						},
-						Some(URLHintResult::Dapp(dapp)) => {
-							let (handler, fetch_control) = ContentFetcherHandler::new(
-								dapp.url(),
-								control,
-								DappInstaller {
-									id: content_id.clone(),
-									dapps_path: self.dapps_path.clone(),
-									on_done: Box::new(on_done),
-									embeddable_on: self.embeddable_on.clone(),
-								},
-								self.embeddable_on.clone(),
-							);
-
-							(Some(ContentStatus::Fetching(fetch_control)), Box::new(handler) as Box<Handler>)
-						},
-						Some(URLHintResult::Content(content)) => {
-							let (handler, fetch_control) = ContentFetcherHandler::new(
-								content.url,
-								control,
-								ContentInstaller {
-									id: content_id.clone(),
-									mime: content.mime,
-									content_path: self.dapps_path.clone(),
-									on_done: Box::new(on_done),
-								},
-								self.embeddable_on.clone(),
-							);
-
-							(Some(ContentStatus::Fetching(fetch_control)), Box::new(handler) as Box<Handler>)
-						},
-						None if self.sync.is_major_importing() => {
-							(None, Self::still_syncing(self.embeddable_on.clone()))
-						},
-						None => {
-							// This may happen when sync status changes in between
-							// `contains` and `to_handler`
-							(None, Box::new(ContentHandler::error(
-								StatusCode::NotFound,
-								"Resource Not Found",
-								"Requested resource was not found.",
-								None,
-								self.embeddable_on.clone(),
-							)) as Box<Handler>)
-						},
-					}
-				},
-			}
-		};
-
-		if let Some(status) = new_status {
-			cache.clear_garbage(MAX_CACHED_DAPPS);
-			cache.insert(content_id, status);
-		}
-
-		handler
-	}
-}
-
-#[derive(Debug)]
-pub enum ValidationError {
-	Io(io::Error),
-	Zip(zip::result::ZipError),
-	InvalidContentId,
-	ManifestNotFound,
-	ManifestSerialization(String),
-	HashMismatch { expected: H256, got: H256, },
-}
-
-impl fmt::Display for ValidationError {
-	fn fmt(&self, f: &mut fmt::Formatter) -> Result<(), fmt::Error> {
-		match *self {
-			ValidationError::Io(ref io) => write!(f, "Unexpected IO error occured: {:?}", io),
-			ValidationError::Zip(ref zip) => write!(f, "Unable to read ZIP archive: {:?}", zip),
-			ValidationError::InvalidContentId => write!(f, "ID is invalid. It should be 256 bits keccak hash of content."),
-			ValidationError::ManifestNotFound => write!(f, "Downloaded Dapp bundle did not contain valid manifest.json file."),
-			ValidationError::ManifestSerialization(ref err) => {
-				write!(f, "There was an error during Dapp Manifest serialization: {:?}", err)
-			},
-			ValidationError::HashMismatch { ref expected, ref got } => {
-				write!(f, "Hash of downloaded content did not match. Expected:{:?}, Got:{:?}.", expected, got)
-			},
-		}
-	}
-}
-
-impl From<io::Error> for ValidationError {
-	fn from(err: io::Error) -> Self {
-		ValidationError::Io(err)
-	}
-}
-
-impl From<zip::result::ZipError> for ValidationError {
-	fn from(err: zip::result::ZipError) -> Self {
-		ValidationError::Zip(err)
-	}
-}
-
-struct ContentInstaller {
-	id: String,
-	mime: String,
-	content_path: PathBuf,
-	on_done: Box<Fn(String, Option<LocalPageEndpoint>) + Send>,
-}
-
-impl ContentValidator for ContentInstaller {
-	type Error = ValidationError;
-
-	fn validate_and_install(&self, path: PathBuf) -> Result<(String, LocalPageEndpoint), ValidationError> {
-		// Create dir
-		try!(fs::create_dir_all(&self.content_path));
-
-		// Validate hash
-		let mut file_reader = io::BufReader::new(try!(fs::File::open(&path)));
-		let hash = try!(sha3(&mut file_reader));
-		let id = try!(self.id.as_str().parse().map_err(|_| ValidationError::InvalidContentId));
-		if id != hash {
-			return Err(ValidationError::HashMismatch {
-				expected: id,
-				got: hash,
-			});
-		}
-
-		// And prepare path for a file
-		let filename = path.file_name().expect("We always fetch a file.");
-		let mut content_path = self.content_path.clone();
-		content_path.push(&filename);
-
-		if content_path.exists() {
-			try!(fs::remove_dir_all(&content_path))
-		}
-
-		try!(fs::copy(&path, &content_path));
-
-		Ok((self.id.clone(), LocalPageEndpoint::single_file(content_path, self.mime.clone(), PageCache::Enabled)))
-	}
-
-	fn done(&self, endpoint: Option<LocalPageEndpoint>) {
-		(self.on_done)(self.id.clone(), endpoint)
-	}
-}
-
-
-struct DappInstaller {
-	id: String,
-	dapps_path: PathBuf,
-	on_done: Box<Fn(String, Option<LocalPageEndpoint>) + Send>,
-	embeddable_on: Option<(String, u16)>,
-}
-
-impl DappInstaller {
-	fn find_manifest(zip: &mut zip::ZipArchive<fs::File>) -> Result<(Manifest, PathBuf), ValidationError> {
-		for i in 0..zip.len() {
-			let mut file = try!(zip.by_index(i));
-
-			if !file.name().ends_with(MANIFEST_FILENAME) {
-				continue;
-			}
-
-			// try to read manifest
-			let mut manifest = String::new();
-			let manifest = file
-				.read_to_string(&mut manifest).ok()
-				.and_then(|_| deserialize_manifest(manifest).ok());
-
-			if let Some(manifest) = manifest {
-				let mut manifest_location = PathBuf::from(file.name());
-				manifest_location.pop(); // get rid of filename
-				return Ok((manifest, manifest_location));
-			}
-		}
-
-		Err(ValidationError::ManifestNotFound)
-	}
-
-	fn dapp_target_path(&self, manifest: &Manifest) -> PathBuf {
-		let mut target = self.dapps_path.clone();
-		target.push(&manifest.id);
-		target
-	}
-}
-
-impl ContentValidator for DappInstaller {
-	type Error = ValidationError;
-
-	fn validate_and_install(&self, app_path: PathBuf) -> Result<(String, LocalPageEndpoint), ValidationError> {
-		trace!(target: "dapps", "Opening dapp bundle at {:?}", app_path);
-		let mut file_reader = io::BufReader::new(try!(fs::File::open(app_path)));
-		let hash = try!(sha3(&mut file_reader));
-		let id = try!(self.id.as_str().parse().map_err(|_| ValidationError::InvalidContentId));
-		if id != hash {
-			return Err(ValidationError::HashMismatch {
-				expected: id,
-				got: hash,
-			});
-		}
-		let file = file_reader.into_inner();
-		// Unpack archive
-		let mut zip = try!(zip::ZipArchive::new(file));
-		// First find manifest file
-		let (mut manifest, manifest_dir) = try!(Self::find_manifest(&mut zip));
-		// Overwrite id to match hash
-		manifest.id = self.id.clone();
-
-		let target = self.dapp_target_path(&manifest);
-
-		// Remove old directory
-		if target.exists() {
-			warn!(target: "dapps", "Overwriting existing dapp: {}", manifest.id);
-			try!(fs::remove_dir_all(target.clone()));
-		}
-
-		// Unpack zip
-		for i in 0..zip.len() {
-			let mut file = try!(zip.by_index(i));
-			// TODO [todr] Check if it's consistent on windows.
-			let is_dir = file.name().chars().rev().next() == Some('/');
-
-			let file_path = PathBuf::from(file.name());
-			let location_in_manifest_base = file_path.strip_prefix(&manifest_dir);
-			// Create files that are inside manifest directory
-			if let Ok(location_in_manifest_base) = location_in_manifest_base {
-				let p = target.join(location_in_manifest_base);
-				// Check if it's a directory
-				if is_dir {
-					try!(fs::create_dir_all(p));
-				} else {
-					let mut target = try!(fs::File::create(p));
-					try!(io::copy(&mut file, &mut target));
-				}
-			}
-		}
-
-		// Write manifest
-		let manifest_str = try!(serialize_manifest(&manifest).map_err(ValidationError::ManifestSerialization));
-		let manifest_path = target.join(MANIFEST_FILENAME);
-		let mut manifest_file = try!(fs::File::create(manifest_path));
-		try!(manifest_file.write_all(manifest_str.as_bytes()));
-
-		// Create endpoint
-		let app = LocalPageEndpoint::new(target, manifest.clone().into(), PageCache::Enabled, self.embeddable_on.clone());
-
-		// Return modified app manifest
-		Ok((manifest.id.clone(), app))
-	}
-
-	fn done(&self, endpoint: Option<LocalPageEndpoint>) {
-		(self.on_done)(self.id.clone(), endpoint)
-	}
-}
-
-#[cfg(test)]
-mod tests {
-	use std::env;
-	use std::sync::Arc;
-	use util::Bytes;
-	use endpoint::EndpointInfo;
-	use page::LocalPageEndpoint;
-	use apps::cache::ContentStatus;
-	use apps::urlhint::{URLHint, URLHintResult};
-	use super::ContentFetcher;
-
-	struct FakeResolver;
-	impl URLHint for FakeResolver {
-		fn resolve(&self, _id: Bytes) -> Option<URLHintResult> {
-			None
-		}
-	}
-
-	#[test]
-	fn should_true_if_contains_the_app() {
-		// given
-		let path = env::temp_dir();
-		let fetcher = ContentFetcher::new(FakeResolver, Arc::new(|| false), None);
-		let handler = LocalPageEndpoint::new(path, EndpointInfo {
-			name: "fake".into(),
-			description: "".into(),
-			version: "".into(),
-			author: "".into(),
-			icon_url: "".into(),
-		}, Default::default(), None);
-
-		// when
-		fetcher.set_status("test", ContentStatus::Ready(handler));
-		fetcher.set_status("test2", ContentStatus::Fetching(Default::default()));
-
-		// then
-		assert_eq!(fetcher.contains("test"), true);
-		assert_eq!(fetcher.contains("test2"), true);
-		assert_eq!(fetcher.contains("test3"), false);
-	}
-}

dapps/src/apps/fetcher/installers.rs

@@ -0,0 +1,255 @@
+// 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/>.
+
+use zip;
+use std::{fs, fmt};
+use std::io::{self, Read, Write};
+use std::path::PathBuf;
+use fetch::{self, Mime};
+use util::H256;
+
+use util::sha3::sha3;
+use page::{LocalPageEndpoint, PageCache};
+use handlers::{ContentValidator, ValidatorResponse};
+use apps::manifest::{MANIFEST_FILENAME, deserialize_manifest, serialize_manifest, Manifest};
+
+type OnDone = Box<Fn(Option<LocalPageEndpoint>) + Send>;
+
+fn write_response_and_check_hash(
+	id: &str,
+	mut content_path: PathBuf,
+	filename: &str,
+	response: fetch::Response
+) -> Result<(fs::File, PathBuf), ValidationError> {
+	// try to parse id
+	let id = id.parse().map_err(|_| ValidationError::InvalidContentId)?;
+
+	// check if content exists
+	if content_path.exists() {
+		warn!(target: "dapps", "Overwriting existing content at 0x{:?}", id);
+		fs::remove_dir_all(&content_path)?
+	}
+
+	// create directory
+	fs::create_dir_all(&content_path)?;
+
+	// append filename
+	content_path.push(filename);
+
+	// Now write the response
+	let mut file = io::BufWriter::new(fs::File::create(&content_path)?);
+	let mut reader = io::BufReader::new(response);
+	io::copy(&mut reader, &mut file)?;
+	file.flush()?;
+
+	// Validate hash
+	// TODO [ToDr] calculate sha3 in-flight while reading the response
+	let mut file = io::BufReader::new(fs::File::open(&content_path)?);
+	let hash = sha3(&mut file)?;
+	if id == hash {
+		Ok((file.into_inner(), content_path))
+	} else {
+		Err(ValidationError::HashMismatch {
+			expected: id,
+			got: hash,
+		})
+	}
+}
+
+pub struct Content {
+	id: String,
+	mime: Mime,
+	content_path: PathBuf,
+	on_done: OnDone,
+}
+
+impl Content {
+	pub fn new(id: String, mime: Mime, content_path: PathBuf, on_done: OnDone) -> Self {
+		Content {
+			id: id,
+			mime: mime,
+			content_path: content_path,
+			on_done: on_done,
+		}
+	}
+}
+
+impl ContentValidator for Content {
+	type Error = ValidationError;
+
+	fn validate_and_install(&self, response: fetch::Response) -> Result<ValidatorResponse, ValidationError> {
+		let validate = |content_path: PathBuf| {
+			// Create dir
+			let (_, content_path) = write_response_and_check_hash(self.id.as_str(), content_path.clone(), self.id.as_str(), response)?;
+
+			Ok(LocalPageEndpoint::single_file(content_path, self.mime.clone(), PageCache::Enabled))
+		};
+
+		// Prepare path for a file
+		let content_path = self.content_path.join(&self.id);
+		// Make sure to always call on_done (even in case of errors)!
+		let result = validate(content_path.clone());
+		// remove the file if there was an error
+		if result.is_err() {
+			// Ignore errors since the file might not exist
+			let _ = fs::remove_dir_all(&content_path);
+		}
+		(self.on_done)(result.as_ref().ok().cloned());
+		result.map(ValidatorResponse::Local)
+	}
+}
+
+pub struct Dapp {
+	id: String,
+	dapps_path: PathBuf,
+	on_done: OnDone,
+	embeddable_on: Option<(String, u16)>,
+}
+
+impl Dapp {
+	pub fn new(id: String, dapps_path: PathBuf, on_done: OnDone, embeddable_on: Option<(String, u16)>) -> Self {
+		Dapp {
+			id: id,
+			dapps_path: dapps_path,
+			on_done: on_done,
+			embeddable_on: embeddable_on,
+		}
+	}
+
+	fn find_manifest(zip: &mut zip::ZipArchive<fs::File>) -> Result<(Manifest, PathBuf), ValidationError> {
+		for i in 0..zip.len() {
+			let mut file = zip.by_index(i)?;
+
+			if !file.name().ends_with(MANIFEST_FILENAME) {
+				continue;
+			}
+
+			// try to read manifest
+			let mut manifest = String::new();
+			let manifest = file
+				.read_to_string(&mut manifest).ok()
+				.and_then(|_| deserialize_manifest(manifest).ok());
+
+			if let Some(manifest) = manifest {
+				let mut manifest_location = PathBuf::from(file.name());
+				manifest_location.pop(); // get rid of filename
+				return Ok((manifest, manifest_location));
+			}
+		}
+
+		Err(ValidationError::ManifestNotFound)
+	}
+}
+
+impl ContentValidator for Dapp {
+	type Error = ValidationError;
+
+	fn validate_and_install(&self, response: fetch::Response) -> Result<ValidatorResponse, ValidationError> {
+		let validate = |dapp_path: PathBuf| {
+			let (file, zip_path) = write_response_and_check_hash(self.id.as_str(), dapp_path.clone(), &format!("{}.zip", self.id), response)?;
+			trace!(target: "dapps", "Opening dapp bundle at {:?}", zip_path);
+			// Unpack archive
+			let mut zip = zip::ZipArchive::new(file)?;
+			// First find manifest file
+			let (mut manifest, manifest_dir) = Self::find_manifest(&mut zip)?;
+			// Overwrite id to match hash
+			manifest.id = self.id.clone();
+
+			// Unpack zip
+			for i in 0..zip.len() {
+				let mut file = zip.by_index(i)?;
+				let is_dir = file.name().chars().rev().next() == Some('/');
+
+				let file_path = PathBuf::from(file.name());
+				let location_in_manifest_base = file_path.strip_prefix(&manifest_dir);
+				// Create files that are inside manifest directory
+				if let Ok(location_in_manifest_base) = location_in_manifest_base {
+					let p = dapp_path.join(location_in_manifest_base);
+					// Check if it's a directory
+					if is_dir {
+						fs::create_dir_all(p)?;
+					} else {
+						let mut target = fs::File::create(p)?;
+						io::copy(&mut file, &mut target)?;
+					}
+				}
+			}
+
+			// Remove zip
+			fs::remove_file(&zip_path)?;
+
+			// Write manifest
+			let manifest_str = serialize_manifest(&manifest).map_err(ValidationError::ManifestSerialization)?;
+			let manifest_path = dapp_path.join(MANIFEST_FILENAME);
+			let mut manifest_file = fs::File::create(manifest_path)?;
+			manifest_file.write_all(manifest_str.as_bytes())?;
+			// Create endpoint
+			let endpoint = LocalPageEndpoint::new(dapp_path, manifest.clone().into(), PageCache::Enabled, self.embeddable_on.clone());
+			Ok(endpoint)
+		};
+
+		// Prepare directory for dapp
+		let target = self.dapps_path.join(&self.id);
+		// Validate the dapp
+		let result = validate(target.clone());
+		// remove the file if there was an error
+		if result.is_err() {
+			// Ignore errors since the file might not exist
+			let _ = fs::remove_dir_all(&target);
+		}
+		(self.on_done)(result.as_ref().ok().cloned());
+		result.map(ValidatorResponse::Local)
+	}
+}
+
+#[derive(Debug)]
+pub enum ValidationError {
+	Io(io::Error),
+	Zip(zip::result::ZipError),
+	InvalidContentId,
+	ManifestNotFound,
+	ManifestSerialization(String),
+	HashMismatch { expected: H256, got: H256, },
+}
+
+impl fmt::Display for ValidationError {
+	fn fmt(&self, f: &mut fmt::Formatter) -> Result<(), fmt::Error> {
+		match *self {
+			ValidationError::Io(ref io) => write!(f, "Unexpected IO error occured: {:?}", io),
+			ValidationError::Zip(ref zip) => write!(f, "Unable to read ZIP archive: {:?}", zip),
+			ValidationError::InvalidContentId => write!(f, "ID is invalid. It should be 256 bits keccak hash of content."),
+			ValidationError::ManifestNotFound => write!(f, "Downloaded Dapp bundle did not contain valid manifest.json file."),
+			ValidationError::ManifestSerialization(ref err) => {
+				write!(f, "There was an error during Dapp Manifest serialization: {:?}", err)
+			},
+			ValidationError::HashMismatch { ref expected, ref got } => {
+				write!(f, "Hash of downloaded content did not match. Expected:{:?}, Got:{:?}.", expected, got)
+			},
+		}
+	}
+}
+
+impl From<io::Error> for ValidationError {
+	fn from(err: io::Error) -> Self {
+		ValidationError::Io(err)
+	}
+}
+
+impl From<zip::result::ZipError> for ValidationError {
+	fn from(err: zip::result::ZipError) -> Self {
+		ValidationError::Zip(err)
+	}
+}

dapps/src/apps/fetcher/mod.rs

@@ -0,0 +1,265 @@
+// 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/>.
+
+//! Fetchable Dapps support.
+//! Manages downloaded (cached) Dapps and downloads them when necessary.
+//! Uses `URLHint` to resolve addresses into Dapps bundle file location.
+
+mod installers;
+
+use std::{fs, env};
+use std::path::PathBuf;
+use std::sync::Arc;
+use rustc_serialize::hex::FromHex;
+use fetch::{Client as FetchClient, Fetch};
+use hash_fetch::urlhint::{URLHintContract, URLHint, URLHintResult};
+use parity_reactor::Remote;
+
+use hyper;
+use hyper::status::StatusCode;
+
+use {SyncStatus, random_filename};
+use util::Mutex;
+use page::LocalPageEndpoint;
+use handlers::{ContentHandler, ContentFetcherHandler};
+use endpoint::{Endpoint, EndpointPath, Handler};
+use apps::cache::{ContentCache, ContentStatus};
+
+/// Limit of cached dapps/content
+const MAX_CACHED_DAPPS: usize = 20;
+
+pub trait Fetcher: Send + Sync + 'static {
+	fn contains(&self, content_id: &str) -> bool;
+
+	fn to_async_handler(&self, path: EndpointPath, control: hyper::Control) -> Box<Handler>;
+}
+
+pub struct ContentFetcher<F: Fetch = FetchClient, R: URLHint + Send + Sync + 'static = URLHintContract> {
+	dapps_path: PathBuf,
+	resolver: R,
+	cache: Arc<Mutex<ContentCache>>,
+	sync: Arc<SyncStatus>,
+	embeddable_on: Option<(String, u16)>,
+	remote: Remote,
+	fetch: F,
+}
+
+impl<R: URLHint + Send + Sync + 'static, F: Fetch> Drop for ContentFetcher<F, R> {
+	fn drop(&mut self) {
+		// Clear cache path
+		let _ = fs::remove_dir_all(&self.dapps_path);
+	}
+}
+
+impl<R: URLHint + Send + Sync + 'static, F: Fetch> ContentFetcher<F, R> {
+
+	pub fn new(resolver: R, sync_status: Arc<SyncStatus>, embeddable_on: Option<(String, u16)>, remote: Remote, fetch: F) -> Self {
+		let mut dapps_path = env::temp_dir();
+		dapps_path.push(random_filename());
+
+		ContentFetcher {
+			dapps_path: dapps_path,
+			resolver: resolver,
+			sync: sync_status,
+			cache: Arc::new(Mutex::new(ContentCache::default())),
+			embeddable_on: embeddable_on,
+			remote: remote,
+			fetch: fetch,
+		}
+	}
+
+	fn still_syncing(address: Option<(String, u16)>) -> Box<Handler> {
+		Box::new(ContentHandler::error(
+			StatusCode::ServiceUnavailable,
+			"Sync In Progress",
+			"Your node is still syncing. We cannot resolve any content before it's fully synced.",
+			Some("<a href=\"javascript:window.location.reload()\">Refresh</a>"),
+			address,
+		))
+	}
+
+	#[cfg(test)]
+	fn set_status(&self, content_id: &str, status: ContentStatus) {
+		self.cache.lock().insert(content_id.to_owned(), status);
+	}
+}
+
+impl<R: URLHint + Send + Sync + 'static, F: Fetch> Fetcher for ContentFetcher<F, R> {
+	fn contains(&self, content_id: &str) -> bool {
+		{
+			let mut cache = self.cache.lock();
+			// Check if we already have the app
+			if cache.get(content_id).is_some() {
+				return true;
+			}
+		}
+		// fallback to resolver
+		if let Ok(content_id) = content_id.from_hex() {
+			// else try to resolve the app_id
+			let has_content = self.resolver.resolve(content_id).is_some();
+			// if there is content or we are syncing return true
+			has_content || self.sync.is_major_importing()
+		} else {
+			false
+		}
+	}
+
+	fn to_async_handler(&self, path: EndpointPath, control: hyper::Control) -> Box<Handler> {
+		let mut cache = self.cache.lock();
+		let content_id = path.app_id.clone();
+
+		let (new_status, handler) = {
+			let status = cache.get(&content_id);
+			match status {
+				// Just serve the content
+				Some(&mut ContentStatus::Ready(ref endpoint)) => {
+					(None, endpoint.to_async_handler(path, control))
+				},
+				// Content is already being fetched
+				Some(&mut ContentStatus::Fetching(ref fetch_control)) if !fetch_control.is_deadline_reached() => {
+					trace!(target: "dapps", "Content fetching in progress. Waiting...");
+					(None, fetch_control.to_async_handler(path, control))
+				},
+				// We need to start fetching the content
+				_ => {
+					trace!(target: "dapps", "Content unavailable. Fetching... {:?}", content_id);
+					let content_hex = content_id.from_hex().expect("to_handler is called only when `contains` returns true.");
+					let content = self.resolver.resolve(content_hex);
+
+					let cache = self.cache.clone();
+					let id = content_id.clone();
+					let on_done = move |result: Option<LocalPageEndpoint>| {
+						let mut cache = cache.lock();
+						match result {
+							Some(endpoint) => cache.insert(id.clone(), ContentStatus::Ready(endpoint)),
+							// In case of error
+							None => cache.remove(&id),
+						};
+					};
+
+					match content {
+						// Don't serve dapps if we are still syncing (but serve content)
+						Some(URLHintResult::Dapp(_)) if self.sync.is_major_importing() => {
+							(None, Self::still_syncing(self.embeddable_on.clone()))
+						},
+						Some(URLHintResult::Dapp(dapp)) => {
+							let handler = ContentFetcherHandler::new(
+								dapp.url(),
+								path,
+								control,
+								installers::Dapp::new(
+									content_id.clone(),
+									self.dapps_path.clone(),
+									Box::new(on_done),
+									self.embeddable_on.clone(),
+								),
+								self.embeddable_on.clone(),
+								self.remote.clone(),
+								self.fetch.clone(),
+							);
+
+							(Some(ContentStatus::Fetching(handler.fetch_control())), Box::new(handler) as Box<Handler>)
+						},
+						Some(URLHintResult::Content(content)) => {
+							let handler = ContentFetcherHandler::new(
+								content.url,
+								path,
+								control,
+								installers::Content::new(
+									content_id.clone(),
+									content.mime,
+									self.dapps_path.clone(),
+									Box::new(on_done),
+								),
+								self.embeddable_on.clone(),
+								self.remote.clone(),
+								self.fetch.clone(),
+							);
+
+							(Some(ContentStatus::Fetching(handler.fetch_control())), Box::new(handler) as Box<Handler>)
+						},
+						None if self.sync.is_major_importing() => {
+							(None, Self::still_syncing(self.embeddable_on.clone()))
+						},
+						None => {
+							// This may happen when sync status changes in between
+							// `contains` and `to_handler`
+							(None, Box::new(ContentHandler::error(
+								StatusCode::NotFound,
+								"Resource Not Found",
+								"Requested resource was not found.",
+								None,
+								self.embeddable_on.clone(),
+							)) as Box<Handler>)
+						},
+					}
+				},
+			}
+		};
+
+		if let Some(status) = new_status {
+			cache.clear_garbage(MAX_CACHED_DAPPS);
+			cache.insert(content_id, status);
+		}
+
+		handler
+	}
+}
+
+#[cfg(test)]
+mod tests {
+	use std::env;
+	use std::sync::Arc;
+	use util::Bytes;
+	use fetch::{Fetch, Client};
+	use hash_fetch::urlhint::{URLHint, URLHintResult};
+	use parity_reactor::Remote;
+
+	use apps::cache::ContentStatus;
+	use endpoint::EndpointInfo;
+	use page::LocalPageEndpoint;
+	use super::{ContentFetcher, Fetcher};
+
+	struct FakeResolver;
+	impl URLHint for FakeResolver {
+		fn resolve(&self, _id: Bytes) -> Option<URLHintResult> {
+			None
+		}
+	}
+
+	#[test]
+	fn should_true_if_contains_the_app() {
+		// given
+		let path = env::temp_dir();
+		let fetcher = ContentFetcher::new(FakeResolver, Arc::new(|| false), None, Remote::new_sync(), Client::new().unwrap());
+		let handler = LocalPageEndpoint::new(path, EndpointInfo {
+			name: "fake".into(),
+			description: "".into(),
+			version: "".into(),
+			author: "".into(),
+			icon_url: "".into(),
+		}, Default::default(), None);
+
+		// when
+		fetcher.set_status("test", ContentStatus::Ready(handler));
+		fetcher.set_status("test2", ContentStatus::Fetching(Default::default()));
+
+		// then
+		assert_eq!(fetcher.contains("test"), true);
+		assert_eq!(fetcher.contains("test2"), true);
+		assert_eq!(fetcher.contains("test3"), false);
+	}
+}

dapps/src/apps/fs.rs

@@ -1,4 +1,4 @@
-// Copyright 2015, 2016 Ethcore (UK) Ltd.
+// Copyright 2015, 2016 Parity Technologies (UK) Ltd.
 // This file is part of Parity.
 
 // Parity is free software: you can redistribute it and/or modify
@@ -17,7 +17,7 @@
 use std::io;
 use std::io::Read;
 use std::fs;
-use std::path::PathBuf;
+use std::path::{Path, PathBuf};
 use page::{LocalPageEndpoint, PageCache};
 use endpoint::{Endpoints, EndpointInfo};
 use apps::manifest::{MANIFEST_FILENAME, deserialize_manifest};
@@ -28,17 +28,86 @@ struct LocalDapp {
 	info: EndpointInfo,
 }
 
-fn local_dapps(dapps_path: String) -> Vec<LocalDapp> {
-	let files = fs::read_dir(dapps_path.as_str());
+/// Tries to find and read manifest file in given `path` to extract `EndpointInfo`
+/// If manifest is not found sensible default `EndpointInfo` is returned based on given `name`.
+fn read_manifest(name: &str, mut path: PathBuf) -> EndpointInfo {
+	path.push(MANIFEST_FILENAME);
+
+	fs::File::open(path.clone())
+		.map_err(|e| format!("{:?}", e))
+		.and_then(|mut f| {
+			// Reat file
+			let mut s = String::new();
+			f.read_to_string(&mut s).map_err(|e| format!("{:?}", e))?;
+			// Try to deserialize manifest
+			deserialize_manifest(s)
+		})
+		.map(Into::into)
+		.unwrap_or_else(|e| {
+			warn!(target: "dapps", "Cannot read manifest file at: {:?}. Error: {:?}", path, e);
+
+			EndpointInfo {
+				name: name.into(),
+				description: name.into(),
+				version: "0.0.0".into(),
+				author: "?".into(),
+				icon_url: "icon.png".into(),
+			}
+		})
+}
+
+/// Returns Dapp Id and Local Dapp Endpoint for given filesystem path.
+/// Parses the path to extract last component (for name).
+/// `None` is returned when path is invalid or non-existent.
+pub fn local_endpoint<P: AsRef<Path>>(path: P, signer_address: Option<(String, u16)>) -> Option<(String, Box<LocalPageEndpoint>)> {
+	let path = path.as_ref().to_owned();
+	path.canonicalize().ok().and_then(|path| {
+		let name = path.file_name().and_then(|name| name.to_str());
+		name.map(|name| {
+			let dapp = local_dapp(name.into(), path.clone());
+			(dapp.id, Box::new(LocalPageEndpoint::new(
+				dapp.path, dapp.info, PageCache::Disabled, signer_address.clone())
+			))
+		})
+	})
+}
+
+
+fn local_dapp(name: String, path: PathBuf) -> LocalDapp {
+	// try to get manifest file
+	let info = read_manifest(&name, path.clone());
+	LocalDapp {
+		id: name,
+		path: path,
+		info: info,
+	}
+}
+
+/// Returns endpoints for Local Dapps found for given filesystem path.
+/// Scans the directory and collects `LocalPageEndpoints`.
+pub fn local_endpoints<P: AsRef<Path>>(dapps_path: P, signer_address: Option<(String, u16)>) -> Endpoints {
+	let mut pages = Endpoints::new();
+	for dapp in local_dapps(dapps_path.as_ref()) {
+		pages.insert(
+			dapp.id,
+			Box::new(LocalPageEndpoint::new(dapp.path, dapp.info, PageCache::Disabled, signer_address.clone()))
+		);
+	}
+	pages
+}
+
+
+fn local_dapps(dapps_path: &Path) -> Vec<LocalDapp> {
+	let files = fs::read_dir(dapps_path);
 	if let Err(e) = files {
-		warn!(target: "dapps", "Unable to load local dapps from: {}. Reason: {:?}", dapps_path, e);
+		warn!(target: "dapps", "Unable to load local dapps from: {}. Reason: {:?}", dapps_path.display(), e);
 		return vec![];
 	}
 
 	let files = files.expect("Check is done earlier");
 	files.map(|dir| {
-			let entry = try!(dir);
-			let file_type = try!(entry.file_type());
+			let entry = dir?;
+			let file_type = entry.file_type()?;
 
 			// skip files
 			if file_type.is_file() {
@@ -59,51 +128,6 @@ fn local_dapps(dapps_path: String) -> Vec<LocalDapp> {
 			}
 			m.ok()
 		})
-		.map(|(name, path)| {
-			// try to get manifest file
-			let info = read_manifest(&name, path.clone());
-			LocalDapp {
-				id: name,
-				path: path,
-				info: info,
-			}
-		})
+		.map(|(name, path)| local_dapp(name, path))
 		.collect()
 }
-
-fn read_manifest(name: &str, mut path: PathBuf) -> EndpointInfo {
-	path.push(MANIFEST_FILENAME);
-
-	fs::File::open(path.clone())
-		.map_err(|e| format!("{:?}", e))
-		.and_then(|mut f| {
-			// Reat file
-			let mut s = String::new();
-			try!(f.read_to_string(&mut s).map_err(|e| format!("{:?}", e)));
-			// Try to deserialize manifest
-			deserialize_manifest(s)
-		})
-		.map(Into::into)
-		.unwrap_or_else(|e| {
-			warn!(target: "dapps", "Cannot read manifest file at: {:?}. Error: {:?}", path, e);
-
-			EndpointInfo {
-				name: name.into(),
-				description: name.into(),
-				version: "0.0.0".into(),
-				author: "?".into(),
-				icon_url: "icon.png".into(),
-			}
-		})
-}
-
-pub fn local_endpoints(dapps_path: String, signer_address: Option<(String, u16)>) -> Endpoints {
-	let mut pages = Endpoints::new();
-	for dapp in local_dapps(dapps_path) {
-		pages.insert(
-			dapp.id,
-			Box::new(LocalPageEndpoint::new(dapp.path, dapp.info, PageCache::Disabled, signer_address.clone()))
-		);
-	}
-	pages
-}

dapps/src/apps/manifest.rs

@@ -1,4 +1,4 @@
-// Copyright 2015, 2016 Ethcore (UK) Ltd.
+// Copyright 2015, 2016 Parity Technologies (UK) Ltd.
 // This file is part of Parity.
 
 // Parity is free software: you can redistribute it and/or modify

dapps/src/apps/mod.rs

@@ -1,4 +1,4 @@
-// Copyright 2015, 2016 Ethcore (UK) Ltd.
+// Copyright 2015, 2016 Parity Technologies (UK) Ltd.
 // This file is part of Parity.
 
 // Parity is free software: you can redistribute it and/or modify
@@ -14,36 +14,57 @@
 // You should have received a copy of the GNU General Public License
 // along with Parity.  If not, see <http://www.gnu.org/licenses/>.
 
+use std::path::PathBuf;
+use std::sync::Arc;
 use endpoint::{Endpoints, Endpoint};
 use page::PageEndpoint;
 use proxypac::ProxyPac;
+use web::Web;
+use fetch::Fetch;
 use parity_dapps::WebApp;
+use parity_reactor::Remote;
+use {WebProxyTokens};
 
 mod cache;
 mod fs;
-pub mod urlhint;
 pub mod fetcher;
 pub mod manifest;
 
 extern crate parity_ui;
 
 pub const HOME_PAGE: &'static str = "home";
-pub const DAPPS_DOMAIN : &'static str = ".parity";
-pub const RPC_PATH : &'static str =  "rpc";
-pub const API_PATH : &'static str =  "api";
-pub const UTILS_PATH : &'static str =  "parity-utils";
+pub const DAPPS_DOMAIN: &'static str = ".parity";
+pub const RPC_PATH: &'static str =  "rpc";
+pub const API_PATH: &'static str =  "api";
+pub const UTILS_PATH: &'static str =  "parity-utils";
+pub const WEB_PATH: &'static str = "web";
 
 pub fn utils() -> Box<Endpoint> {
 	Box::new(PageEndpoint::with_prefix(parity_ui::App::default(), UTILS_PATH.to_owned()))
 }
 
-pub fn all_endpoints(dapps_path: String, signer_address: Option<(String, u16)>) -> Endpoints {
+pub fn all_endpoints<F: Fetch>(
+	dapps_path: PathBuf,
+	extra_dapps: Vec<PathBuf>,
+	signer_address: Option<(String, u16)>,
+	web_proxy_tokens: Arc<WebProxyTokens>,
+	remote: Remote,
+	fetch: F,
+) -> Endpoints {
 	// fetch fs dapps at first to avoid overwriting builtins
 	let mut pages = fs::local_endpoints(dapps_path, signer_address.clone());
+	for path in extra_dapps {
+		if let Some((id, endpoint)) = fs::local_endpoint(path.clone(), signer_address.clone()) {
+			pages.insert(id, endpoint);
+		} else {
+			warn!(target: "dapps", "Ignoring invalid dapp at {}", path.display());
+		}
+	}
 
 	// NOTE [ToDr] Dapps will be currently embeded on 8180
 	insert::<parity_ui::App>(&mut pages, "ui", Embeddable::Yes(signer_address.clone()));
-	pages.insert("proxy".into(), ProxyPac::boxed(signer_address));
+	pages.insert("proxy".into(), ProxyPac::boxed(signer_address.clone()));
+	pages.insert(WEB_PATH.into(), Web::boxed(signer_address.clone(), web_proxy_tokens.clone(), remote.clone(), fetch.clone()));
 
 	pages
 }

dapps/src/endpoint.rs

@@ -1,4 +1,4 @@
-// Copyright 2015, 2016 Ethcore (UK) Ltd.
+// Copyright 2015, 2016 Parity Technologies (UK) Ltd.
 // This file is part of Parity.
 
 // Parity is free software: you can redistribute it and/or modify

dapps/src/handlers/auth.rs

@@ -1,4 +1,4 @@
-// Copyright 2015, 2016 Ethcore (UK) Ltd.
+// Copyright 2015, 2016 Parity Technologies (UK) Ltd.
 // This file is part of Parity.
 
 // Parity is free software: you can redistribute it and/or modify

dapps/src/handlers/content.rs

@@ -1,4 +1,4 @@
-// Copyright 2015, 2016 Ethcore (UK) Ltd.
+// Copyright 2015, 2016 Parity Technologies (UK) Ltd.
 // This file is part of Parity.
 
 // Parity is free software: you can redistribute it and/or modify
@@ -16,7 +16,6 @@
 
 //! Simple Content Handler
 
-use std::io::Write;
 use hyper::{header, server, Decoder, Encoder, Next};
 use hyper::net::HttpStream;
 use hyper::mime::Mime;

dapps/src/handlers/echo.rs

@@ -1,4 +1,4 @@
-// Copyright 2015, 2016 Ethcore (UK) Ltd.
+// Copyright 2015, 2016 Parity Technologies (UK) Ltd.
 // This file is part of Parity.
 
 // Parity is free software: you can redistribute it and/or modify

dapps/src/handlers/fetch.rs

@@ -1,4 +1,4 @@
-// Copyright 2015, 2016 Ethcore (UK) Ltd.
+// Copyright 2015, 2016 Parity Technologies (UK) Ltd.
 // This file is part of Parity.
 
 // Parity is free software: you can redistribute it and/or modify
@@ -16,41 +16,56 @@
 
 //! Hyper Server Handler that fetches a file during a request (proxy).
 
-use std::{fs, fmt};
-use std::path::PathBuf;
+use std::fmt;
 use std::sync::{mpsc, Arc};
 use std::sync::atomic::{AtomicBool, Ordering};
 use std::time::{Instant, Duration};
+use fetch::{self, Fetch};
+use futures::Future;
+use parity_reactor::Remote;
 use util::Mutex;
-use url::Url;
-use fetch::{Client, Fetch, FetchResult};
 
 use hyper::{server, Decoder, Encoder, Next, Method, Control};
 use hyper::net::HttpStream;
+use hyper::uri::RequestUri;
 use hyper::status::StatusCode;
 
-use handlers::{ContentHandler, Redirection, extract_url};
-use page::LocalPageEndpoint;
+use endpoint::EndpointPath;
+use handlers::{ContentHandler, StreamingHandler};
+use page::{LocalPageEndpoint, PageHandlerWaiting};
 
-const FETCH_TIMEOUT: u64 = 30;
+const FETCH_TIMEOUT: u64 = 300;
 
-enum FetchState {
-	NotStarted(String),
-	Error(ContentHandler),
-	InProgress(mpsc::Receiver<FetchResult>),
-	Done(String, LocalPageEndpoint, Redirection),
+pub enum ValidatorResponse {
+	Local(LocalPageEndpoint),
+	Streaming(StreamingHandler<fetch::Response>),
 }
 
-pub trait ContentValidator {
+pub trait ContentValidator: Send + 'static {
 	type Error: fmt::Debug + fmt::Display;
 
-	fn validate_and_install(&self, app: PathBuf) -> Result<(String, LocalPageEndpoint), Self::Error>;
-	fn done(&self, Option<LocalPageEndpoint>);
+	fn validate_and_install(&self, fetch::Response) -> Result<ValidatorResponse, Self::Error>;
 }
 
+enum FetchState {
+	Waiting,
+	NotStarted(String),
+	Error(ContentHandler),
+	InProgress(mpsc::Receiver<FetchState>),
+	Streaming(StreamingHandler<fetch::Response>),
+	Done(LocalPageEndpoint, Box<PageHandlerWaiting>),
+}
+
+enum WaitResult {
+	Error(ContentHandler),
+	Done(LocalPageEndpoint),
+	NonAwaitable,
+}
+
+#[derive(Clone)]
 pub struct FetchControl {
 	abort: Arc<AtomicBool>,
-	listeners: Mutex<Vec<(Control, mpsc::Sender<FetchState>)>>,
+	listeners: Arc<Mutex<Vec<(Control, mpsc::Sender<WaitResult>)>>>,
 	deadline: Instant,
 }
 
@@ -58,16 +73,17 @@ impl Default for FetchControl {
 	fn default() -> Self {
 		FetchControl {
 			abort: Arc::new(AtomicBool::new(false)),
-			listeners: Mutex::new(Vec::new()),
+			listeners: Arc::new(Mutex::new(Vec::new())),
 			deadline: Instant::now() + Duration::from_secs(FETCH_TIMEOUT),
 		}
 	}
 }
 
 impl FetchControl {
-	fn notify<F: Fn() -> FetchState>(&self, status: F) {
+	fn notify<F: Fn() -> WaitResult>(&self, status: F) {
 		let mut listeners = self.listeners.lock();
 		for (control, sender) in listeners.drain(..) {
+			trace!(target: "dapps", "Resuming request waiting for content...");
 			if let Err(e) = sender.send(status()) {
 				trace!(target: "dapps", "Waiting listener notification failed: {:?}", e);
 			} else {
@@ -78,148 +94,246 @@ impl FetchControl {
 
 	fn set_status(&self, status: &FetchState) {
 		match *status {
-			FetchState::Error(ref handler) => self.notify(|| FetchState::Error(handler.clone())),
-			FetchState::Done(ref id, ref endpoint, ref handler) => self.notify(|| FetchState::Done(id.clone(), endpoint.clone(), handler.clone())),
-			FetchState::NotStarted(_) | FetchState::InProgress(_) => {},
+			FetchState::Error(ref handler) => self.notify(|| WaitResult::Error(handler.clone())),
+			FetchState::Done(ref endpoint, _) => self.notify(|| WaitResult::Done(endpoint.clone())),
+			FetchState::Streaming(_) => self.notify(|| WaitResult::NonAwaitable),
+			FetchState::NotStarted(_) | FetchState::InProgress(_) | FetchState::Waiting => {},
 		}
 	}
 
+	pub fn is_deadline_reached(&self) -> bool {
+		self.deadline < Instant::now()
+	}
+
 	pub fn abort(&self) {
 		self.abort.store(true, Ordering::SeqCst);
 	}
 
-	pub fn to_handler(&self, control: Control) -> Box<server::Handler<HttpStream> + Send> {
+	pub fn to_async_handler(&self, path: EndpointPath, control: Control) -> Box<server::Handler<HttpStream> + Send> {
 		let (tx, rx) = mpsc::channel();
 		self.listeners.lock().push((control, tx));
 
 		Box::new(WaitingHandler {
 			receiver: rx,
-			state: None,
+			state: FetchState::Waiting,
+			uri: RequestUri::default(),
+			path: path,
 		})
 	}
 }
 
 pub struct WaitingHandler {
-	receiver: mpsc::Receiver<FetchState>,
-	state: Option<FetchState>,
+	receiver: mpsc::Receiver<WaitResult>,
+	state: FetchState,
+	uri: RequestUri,
+	path: EndpointPath,
 }
 
 impl server::Handler<HttpStream> for WaitingHandler {
-	fn on_request(&mut self, _request: server::Request<HttpStream>) -> Next {
+	fn on_request(&mut self, request: server::Request<HttpStream>) -> Next {
+		self.uri = request.uri().clone();
 		Next::wait()
 	}
 
-	fn on_request_readable(&mut self, _decoder: &mut Decoder<HttpStream>) -> Next {
-		self.state = self.receiver.try_recv().ok();
-		Next::write()
+	fn on_request_readable(&mut self, decoder: &mut Decoder<HttpStream>) -> Next {
+		let result = self.receiver.try_recv().ok();
+		self.state = match result {
+			Some(WaitResult::Error(handler)) => FetchState::Error(handler),
+			Some(WaitResult::Done(endpoint)) => {
+				let mut page_handler = endpoint.to_page_handler(self.path.clone());
+				page_handler.set_uri(&self.uri);
+				FetchState::Done(endpoint, page_handler)
+			},
+			_ => {
+				warn!("A result for waiting request was not received.");
+				FetchState::Waiting
+			},
+		};
+
+		match self.state {
+			FetchState::Done(_, ref mut handler) => handler.on_request_readable(decoder),
+			FetchState::Streaming(ref mut handler) => handler.on_request_readable(decoder),
+			FetchState::Error(ref mut handler) => handler.on_request_readable(decoder),
+			_ => Next::write(),
+		}
 	}
 
 	fn on_response(&mut self, res: &mut server::Response) -> Next {
 		match self.state {
-			Some(FetchState::Done(_, _, ref mut handler)) => handler.on_response(res),
-			Some(FetchState::Error(ref mut handler)) => handler.on_response(res),
+			FetchState::Done(_, ref mut handler) => handler.on_response(res),
+			FetchState::Streaming(ref mut handler) => handler.on_response(res),
+			FetchState::Error(ref mut handler) => handler.on_response(res),
 			_ => Next::end(),
 		}
 	}
 
 	fn on_response_writable(&mut self, encoder: &mut Encoder<HttpStream>) -> Next {
 		match self.state {
-			Some(FetchState::Done(_, _, ref mut handler)) => handler.on_response_writable(encoder),
-			Some(FetchState::Error(ref mut handler)) => handler.on_response_writable(encoder),
+			FetchState::Done(_, ref mut handler) => handler.on_response_writable(encoder),
+			FetchState::Streaming(ref mut handler) => handler.on_response_writable(encoder),
+			FetchState::Error(ref mut handler) => handler.on_response_writable(encoder),
 			_ => Next::end(),
 		}
 	}
 }
 
-pub struct ContentFetcherHandler<H: ContentValidator> {
-	fetch_control: Arc<FetchControl>,
-	control: Option<Control>,
-	status: FetchState,
-	client: Option<Client>,
-	installer: H,
-	request_url: Option<Url>,
+#[derive(Clone)]
+struct Errors {
 	embeddable_on: Option<(String, u16)>,
 }
 
-impl<H: ContentValidator> Drop for ContentFetcherHandler<H> {
-	fn drop(&mut self) {
-		let result = match self.status {
-			FetchState::Done(_, ref result, _) => Some(result.clone()),
-			_ => None,
-		};
-		self.installer.done(result);
+impl Errors {
+	fn download_error<E: fmt::Debug>(&self, e: E) -> ContentHandler {
+		ContentHandler::error(
+			StatusCode::BadGateway,
+			"Download Error",
+			"There was an error when fetching the content.",
+			Some(&format!("{:?}", e)),
+			self.embeddable_on.clone(),
+		)
+	}
+
+	fn invalid_content<E: fmt::Debug>(&self, e: E) -> ContentHandler {
+		ContentHandler::error(
+			StatusCode::BadGateway,
+			"Invalid Dapp",
+			"Downloaded bundle does not contain a valid content.",
+			Some(&format!("{:?}", e)),
+			self.embeddable_on.clone(),
+		)
+	}
+
+	fn timeout_error(&self) -> ContentHandler {
+		ContentHandler::error(
+			StatusCode::GatewayTimeout,
+			"Download Timeout",
+			&format!("Could not fetch content within {} seconds.", FETCH_TIMEOUT),
+			None,
+			self.embeddable_on.clone(),
+		)
+	}
+
+	fn method_not_allowed(&self) -> ContentHandler {
+		ContentHandler::error(
+			StatusCode::MethodNotAllowed,
+			"Method Not Allowed",
+			"Only <code>GET</code> requests are allowed.",
+			None,
+			self.embeddable_on.clone(),
+		)
 	}
 }
 
-impl<H: ContentValidator> ContentFetcherHandler<H> {
+pub struct ContentFetcherHandler<H: ContentValidator, F: Fetch> {
+	fetch_control: FetchControl,
+	control: Control,
+	remote: Remote,
+	status: FetchState,
+	fetch: F,
+	installer: Option<H>,
+	path: EndpointPath,
+	errors: Errors,
+}
 
+impl<H: ContentValidator, F: Fetch> ContentFetcherHandler<H, F> {
 	pub fn new(
 		url: String,
+		path: EndpointPath,
 		control: Control,
-		handler: H,
+		installer: H,
 		embeddable_on: Option<(String, u16)>,
-	) -> (Self, Arc<FetchControl>) {
-
-		let fetch_control = Arc::new(FetchControl::default());
-		let client = Client::default();
-		let handler = ContentFetcherHandler {
-			fetch_control: fetch_control.clone(),
-			control: Some(control),
-			client: Some(client),
+		remote: Remote,
+		fetch: F,
+	) -> Self {
+		ContentFetcherHandler {
+			fetch_control: FetchControl::default(),
+			control: control,
+			remote: remote,
+			fetch: fetch,
 			status: FetchState::NotStarted(url),
-			installer: handler,
-			request_url: None,
-			embeddable_on: embeddable_on,
-		};
-
-		(handler, fetch_control)
+			installer: Some(installer),
+			path: path,
+			errors: Errors {
+				embeddable_on: embeddable_on,
+			},
+		}
 	}
 
-	fn close_client(client: &mut Option<Client>) {
-		client.take()
-			.expect("After client is closed we are going into write, hence we can never close it again")
-			.close();
+	pub fn fetch_control(&self) -> FetchControl {
+		self.fetch_control.clone()
 	}
 
-	fn fetch_content(client: &mut Client, url: &str, abort: Arc<AtomicBool>, control: Control) -> Result<mpsc::Receiver<FetchResult>, String> {
-		client.request(url, abort, Box::new(move || {
-			trace!(target: "dapps", "Fetching finished.");
+	fn fetch_content(&self, uri: RequestUri, url: &str, installer: H) -> mpsc::Receiver<FetchState> {
+		let (tx, rx) = mpsc::channel();
+		let abort = self.fetch_control.abort.clone();
+
+		let path = self.path.clone();
+		let tx2 = tx.clone();
+		let control = self.control.clone();
+		let errors = self.errors.clone();
+
+		let future = self.fetch.fetch_with_abort(url, abort.into()).then(move |result| {
+			trace!(target: "dapps", "Fetching content finished. Starting validation: {:?}", result);
+			let new_state = match result {
+				Ok(response) => match installer.validate_and_install(response) {
+					Ok(ValidatorResponse::Local(endpoint)) => {
+						trace!(target: "dapps", "Validation OK. Returning response.");
+						let mut handler = endpoint.to_page_handler(path);
+						handler.set_uri(&uri);
+						FetchState::Done(endpoint, handler)
+					},
+					Ok(ValidatorResponse::Streaming(handler)) => {
+						trace!(target: "dapps", "Validation OK. Streaming response.");
+						FetchState::Streaming(handler)
+					},
+					Err(e) => {
+						trace!(target: "dapps", "Error while validating content: {:?}", e);
+						FetchState::Error(errors.invalid_content(e))
+					},
+				},
+				Err(e) => {
+					warn!(target: "dapps", "Unable to fetch content: {:?}", e);
+					FetchState::Error(errors.download_error(e))
+				},
+			};
+			// Content may be resolved when the connection is already dropped.
+			let _ = tx2.send(new_state);
 			// Ignoring control errors
 			let _ = control.ready(Next::read());
-		})).map_err(|e| format!("{:?}", e))
+			Ok(()) as Result<(), ()>
+		});
+
+		// make sure to run within fetch thread pool.
+		let future = self.fetch.process(future);
+		// spawn to event loop
+		let control = self.control.clone();
+		let errors = self.errors.clone();
+		self.remote.spawn_with_timeout(|| future, Duration::from_secs(FETCH_TIMEOUT), move || {
+			// Notify about the timeout
+			let _ = tx.send(FetchState::Error(errors.timeout_error()));
+			// Ignoring control errors
+			let _ = control.ready(Next::read());
+		});
+
+		rx
 	}
 }
 
-impl<H: ContentValidator> server::Handler<HttpStream> for ContentFetcherHandler<H> {
+impl<H: ContentValidator, F: Fetch> server::Handler<HttpStream> for ContentFetcherHandler<H, F> {
 	fn on_request(&mut self, request: server::Request<HttpStream>) -> Next {
-		self.request_url = extract_url(&request);
 		let status = if let FetchState::NotStarted(ref url) = self.status {
+			let uri = request.uri().clone();
+			let installer = self.installer.take().expect("Installer always set initialy; installer used only in on_request; on_request invoked only once; qed");
+
 			Some(match *request.method() {
 				// Start fetching content
 				Method::Get => {
 					trace!(target: "dapps", "Fetching content from: {:?}", url);
-					let control = self.control.take().expect("on_request is called only once, thus control is always Some");
-					let client = self.client.as_mut().expect("on_request is called before client is closed.");
-					let fetch = Self::fetch_content(client, url, self.fetch_control.abort.clone(), control);
-					match fetch {
-						Ok(receiver) => FetchState::InProgress(receiver),
-						Err(e) => FetchState::Error(ContentHandler::error(
-							StatusCode::BadGateway,
-							"Unable To Start Dapp Download",
-							"Could not initialize download of the dapp. It might be a problem with the remote server.",
-							Some(&format!("{}", e)),
-							self.embeddable_on.clone(),
-						)),
-					}
+					let receiver = self.fetch_content(uri, url, installer);
+					FetchState::InProgress(receiver)
 				},
 				// or return error
-				_ => FetchState::Error(ContentHandler::error(
-					StatusCode::MethodNotAllowed,
-					"Method Not Allowed",
-					"Only <code>GET</code> requests are allowed.",
-					None,
-					self.embeddable_on.clone(),
-				)),
+				_ => FetchState::Error(self.errors.method_not_allowed()),
 			})
 		} else { None };
 
@@ -234,60 +348,16 @@ impl<H: ContentValidator> server::Handler<HttpStream> for ContentFetcherHandler<
 	fn on_request_readable(&mut self, decoder: &mut Decoder<HttpStream>) -> Next {
 		let (status, next) = match self.status {
 			// Request may time out
-			FetchState::InProgress(_) if self.fetch_control.deadline < Instant::now() => {
+			FetchState::InProgress(_) if self.fetch_control.is_deadline_reached() => {
 				trace!(target: "dapps", "Fetching dapp failed because of timeout.");
-				let timeout = ContentHandler::error(
-					StatusCode::GatewayTimeout,
-					"Download Timeout",
-					&format!("Could not fetch content within {} seconds.", FETCH_TIMEOUT),
-					None,
-					self.embeddable_on.clone(),
-				);
-				Self::close_client(&mut self.client);
-				(Some(FetchState::Error(timeout)), Next::write())
+				(Some(FetchState::Error(self.errors.timeout_error())), Next::write())
 			},
 			FetchState::InProgress(ref receiver) => {
 				// Check if there is an answer
 				let rec = receiver.try_recv();
 				match rec {
-					// Unpack and validate
-					Ok(Ok(path)) => {
-						trace!(target: "dapps", "Fetching content finished. Starting validation ({:?})", path);
-						Self::close_client(&mut self.client);
-						// Unpack and verify
-						let state = match self.installer.validate_and_install(path.clone()) {
-							Err(e) => {
-								trace!(target: "dapps", "Error while validating content: {:?}", e);
-								FetchState::Error(ContentHandler::error(
-									StatusCode::BadGateway,
-									"Invalid Dapp",
-									"Downloaded bundle does not contain a valid content.",
-									Some(&format!("{:?}", e)),
-									self.embeddable_on.clone(),
-								))
-							},
-							Ok((id, result)) => {
-								let url: String = self.request_url.take()
-									.map(|url| url.raw.into_string())
-									.expect("Request URL always read in on_request; qed");
-								FetchState::Done(id, result, Redirection::new(&url))
-							},
-						};
-						// Remove temporary zip file
-						let _ = fs::remove_file(path);
-						(Some(state), Next::write())
-					},
-					Ok(Err(e)) => {
-						warn!(target: "dapps", "Unable to fetch content: {:?}", e);
-						let error = ContentHandler::error(
-							StatusCode::BadGateway,
-							"Download Error",
-							"There was an error when fetching the content.",
-							Some(&format!("{:?}", e)),
-							self.embeddable_on.clone(),
-						);
-						(Some(FetchState::Error(error)), Next::write())
-					},
+					// just return the new state
+					Ok(state) => (Some(state), Next::write()),
 					// wait some more
 					_ => (None, Next::wait())
 				}
@@ -306,7 +376,8 @@ impl<H: ContentValidator> server::Handler<HttpStream> for ContentFetcherHandler<
 
 	fn on_response(&mut self, res: &mut server::Response) -> Next {
 		match self.status {
-			FetchState::Done(_, _, ref mut handler) => handler.on_response(res),
+			FetchState::Done(_, ref mut handler) => handler.on_response(res),
+			FetchState::Streaming(ref mut handler) => handler.on_response(res),
 			FetchState::Error(ref mut handler) => handler.on_response(res),
 			_ => Next::end(),
 		}
@@ -314,7 +385,8 @@ impl<H: ContentValidator> server::Handler<HttpStream> for ContentFetcherHandler<
 
 	fn on_response_writable(&mut self, encoder: &mut Encoder<HttpStream>) -> Next {
 		match self.status {
-			FetchState::Done(_, _, ref mut handler) => handler.on_response_writable(encoder),
+			FetchState::Done(_, ref mut handler) => handler.on_response_writable(encoder),
+			FetchState::Streaming(ref mut handler) => handler.on_response_writable(encoder),
 			FetchState::Error(ref mut handler) => handler.on_response_writable(encoder),
 			_ => Next::end(),
 		}

dapps/src/handlers/mod.rs

@@ -1,4 +1,4 @@
-// Copyright 2015, 2016 Ethcore (UK) Ltd.
+// Copyright 2015, 2016 Parity Technologies (UK) Ltd.
 // This file is part of Parity.
 
 // Parity is free software: you can redistribute it and/or modify
@@ -17,16 +17,18 @@
 //! Hyper handlers implementations.
 
 mod auth;
-mod echo;
 mod content;
-mod redirect;
+mod echo;
 mod fetch;
+mod redirect;
+mod streaming;
 
 pub use self::auth::AuthRequiredHandler;
-pub use self::echo::EchoHandler;
 pub use self::content::ContentHandler;
+pub use self::echo::EchoHandler;
+pub use self::fetch::{ContentFetcherHandler, ContentValidator, FetchControl, ValidatorResponse};
 pub use self::redirect::Redirection;
-pub use self::fetch::{ContentFetcherHandler, ContentValidator, FetchControl};
+pub use self::streaming::StreamingHandler;
 
 use url::Url;
 use hyper::{server, header, net, uri};
@@ -49,20 +51,30 @@ pub fn add_security_headers(headers: &mut header::Headers, embeddable_on: Option
 	}
 }
 
+
 /// Extracts URL part from the Request.
 pub fn extract_url(req: &server::Request<net::HttpStream>) -> Option<Url> {
-	match *req.uri() {
+	convert_uri_to_url(req.uri(), req.headers().get::<header::Host>())
+}
+
+/// Extracts URL given URI and Host header.
+pub fn convert_uri_to_url(uri: &uri::RequestUri, host: Option<&header::Host>) -> Option<Url> {
+	match *uri {
 		uri::RequestUri::AbsoluteUri(ref url) => {
 			match Url::from_generic_url(url.clone()) {
 				Ok(url) => Some(url),
 				_ => None,
 			}
 		},
-		uri::RequestUri::AbsolutePath(ref path) => {
+		uri::RequestUri::AbsolutePath { ref path, ref query } => {
+			let query = match *query {
+				Some(ref query) => format!("?{}", query),
+				None => "".into(),
+			};
 			// Attempt to prepend the Host header (mandatory in HTTP/1.1)
-			let url_string = match req.headers().get::<header::Host>() {
+			let url_string = match host {
 				Some(ref host) => {
-					format!("http://{}:{}{}", host.hostname, host.port.unwrap_or(80), path)
+					format!("http://{}:{}{}{}", host.hostname, host.port.unwrap_or(80), path, query)
 				},
 				None => return None,
 			};

dapps/src/handlers/redirect.rs

@@ -1,4 +1,4 @@
-// Copyright 2015, 2016 Ethcore (UK) Ltd.
+// Copyright 2015, 2016 Parity Technologies (UK) Ltd.
 // This file is part of Parity.
 
 // Parity is free software: you can redistribute it and/or modify

dapps/src/handlers/streaming.rs

@@ -0,0 +1,101 @@
+// 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/>.
+
+//! Content Stream Response
+
+use std::io::{self, Read};
+
+use hyper::{header, server, Decoder, Encoder, Next};
+use hyper::net::HttpStream;
+use hyper::mime::Mime;
+use hyper::status::StatusCode;
+
+use handlers::add_security_headers;
+
+const BUFFER_SIZE: usize = 1024;
+
+pub struct StreamingHandler<R: io::Read> {
+	buffer: [u8; BUFFER_SIZE],
+	buffer_leftover: usize,
+	status: StatusCode,
+	content: io::BufReader<R>,
+	mimetype: Mime,
+	safe_to_embed_on: Option<(String, u16)>,
+}
+
+impl<R: io::Read> StreamingHandler<R> {
+	pub fn new(content: R, status: StatusCode, mimetype: Mime, embeddable_on: Option<(String, u16)>) -> Self {
+		StreamingHandler {
+			buffer: [0; BUFFER_SIZE],
+			buffer_leftover: 0,
+			status: status,
+			content: io::BufReader::new(content),
+			mimetype: mimetype,
+			safe_to_embed_on: embeddable_on,
+		}
+	}
+
+	pub fn set_initial_content(&mut self, content: &str) {
+		assert_eq!(self.buffer_leftover, 0);
+		let bytes = content.as_bytes();
+		self.buffer_leftover = bytes.len();
+		self.buffer[0..self.buffer_leftover].copy_from_slice(bytes);
+	}
+}
+
+impl<R: io::Read> server::Handler<HttpStream> for StreamingHandler<R> {
+	fn on_request(&mut self, _request: server::Request<HttpStream>) -> Next {
+		Next::write()
+	}
+
+	fn on_request_readable(&mut self, _decoder: &mut Decoder<HttpStream>) -> Next {
+		Next::write()
+	}
+
+	fn on_response(&mut self, res: &mut server::Response) -> Next {
+		res.set_status(self.status);
+		res.headers_mut().set(header::ContentType(self.mimetype.clone()));
+		add_security_headers(&mut res.headers_mut(), self.safe_to_embed_on.clone());
+		Next::write()
+	}
+
+	fn on_response_writable(&mut self, encoder: &mut Encoder<HttpStream>) -> Next {
+		fn handle_error(e: io::Error) -> Next {
+			match e.kind() {
+				::std::io::ErrorKind::WouldBlock => Next::write(),
+				_ => Next::end(),
+			}
+		}
+
+		let write_pos = self.buffer_leftover;
+		match self.content.read(&mut self.buffer[write_pos..]) {
+			Err(e) => handle_error(e),
+			Ok(read) => match encoder.write(&self.buffer[..write_pos + read]) {
+				Err(e) => handle_error(e),
+				Ok(0) => Next::end(),
+				Ok(wrote) => {
+					self.buffer_leftover = write_pos + read - wrote;
+					if self.buffer_leftover > 0 {
+						for i in self.buffer_leftover..write_pos + read {
+							self.buffer.swap(i, i - self.buffer_leftover);
+						}
+					}
+					Next::write()
+				},
+			},
+		}
+	}
+}

dapps/src/lib.rs

@@ -1,4 +1,4 @@
-// Copyright 2015, 2016 Ethcore (UK) Ltd.
+// Copyright 2015, 2016 Parity Technologies (UK) Ltd.
 // This file is part of Parity.
 
 // Parity is free software: you can redistribute it and/or modify
@@ -51,16 +51,19 @@ extern crate serde;
 extern crate serde_json;
 extern crate zip;
 extern crate rand;
-extern crate ethabi;
 extern crate jsonrpc_core;
 extern crate jsonrpc_http_server;
 extern crate mime_guess;
 extern crate rustc_serialize;
 extern crate ethcore_rpc;
 extern crate ethcore_util as util;
+extern crate parity_hash_fetch as hash_fetch;
 extern crate linked_hash_map;
 extern crate fetch;
 extern crate parity_dapps_glue as parity_dapps;
+extern crate futures;
+extern crate parity_reactor;
+
 #[macro_use]
 extern crate log;
 #[macro_use]
@@ -81,18 +84,21 @@ mod rpc;
 mod api;
 mod proxypac;
 mod url;
+mod web;
 #[cfg(test)]
 mod tests;
 
-pub use self::apps::urlhint::ContractClient;
-
+use std::path::{Path, PathBuf};
 use std::sync::{Arc, Mutex};
 use std::net::SocketAddr;
 use std::collections::HashMap;
 
+use hash_fetch::urlhint::ContractClient;
+use fetch::{Fetch, Client as FetchClient};
 use jsonrpc_core::{IoHandler, IoDelegate};
 use router::auth::{Authorization, NoAuth, HttpBasicAuth};
 use ethcore_rpc::Extendable;
+use parity_reactor::Remote;
 
 use self::apps::{HOME_PAGE, DAPPS_DOMAIN};
 
@@ -106,16 +112,30 @@ impl<F> SyncStatus for F where F: Fn() -> bool + Send + Sync {
 	fn is_major_importing(&self) -> bool { self() }
 }
 
+/// Validates Web Proxy tokens
+pub trait WebProxyTokens: Send + Sync {
+	/// Should return true if token is a valid web proxy access token.
+	fn is_web_proxy_token_valid(&self, token: &String) -> bool;
+}
+
+impl<F> WebProxyTokens for F where F: Fn(String) -> bool + Send + Sync {
+	fn is_web_proxy_token_valid(&self, token: &String) -> bool { self(token.to_owned()) }
+}
+
 /// Webapps HTTP+RPC server build.
-pub struct ServerBuilder {
-	dapps_path: String,
+pub struct ServerBuilder<T: Fetch = FetchClient> {
+	dapps_path: PathBuf,
+	extra_dapps: Vec<PathBuf>,
 	handler: Arc<IoHandler>,
 	registrar: Arc<ContractClient>,
 	sync_status: Arc<SyncStatus>,
+	web_proxy_tokens: Arc<WebProxyTokens>,
 	signer_address: Option<(String, u16)>,
+	remote: Remote,
+	fetch: Option<T>,
 }
 
-impl Extendable for ServerBuilder {
+impl<T: Fetch> Extendable for ServerBuilder<T> {
 	fn add_delegate<D: Send + Sync + 'static>(&self, delegate: IoDelegate<D>) {
 		self.handler.add_delegate(delegate);
 	}
@@ -123,55 +143,105 @@ impl Extendable for ServerBuilder {
 
 impl ServerBuilder {
 	/// Construct new dapps server
-	pub fn new(dapps_path: String, registrar: Arc<ContractClient>) -> Self {
+	pub fn new<P: AsRef<Path>>(dapps_path: P, registrar: Arc<ContractClient>, remote: Remote) -> Self {
 		ServerBuilder {
-			dapps_path: dapps_path,
+			dapps_path: dapps_path.as_ref().to_owned(),
+			extra_dapps: vec![],
 			handler: Arc::new(IoHandler::new()),
 			registrar: registrar,
 			sync_status: Arc::new(|| false),
+			web_proxy_tokens: Arc::new(|_| false),
 			signer_address: None,
+			remote: remote,
+			fetch: None,
+		}
+	}
+}
+
+impl<T: Fetch> ServerBuilder<T> {
+	/// Set a fetch client to use.
+	pub fn fetch<X: Fetch>(self, fetch: X) -> ServerBuilder<X> {
+		ServerBuilder {
+			dapps_path: self.dapps_path,
+			extra_dapps: vec![],
+			handler: self.handler,
+			registrar: self.registrar,
+			sync_status: self.sync_status,
+			web_proxy_tokens: self.web_proxy_tokens,
+			signer_address: self.signer_address,
+			remote: self.remote,
+			fetch: Some(fetch),
 		}
 	}
 
 	/// Change default sync status.
-	pub fn with_sync_status(&mut self, status: Arc<SyncStatus>) {
+	pub fn sync_status(mut self, status: Arc<SyncStatus>) -> Self {
 		self.sync_status = status;
+		self
+	}
+
+	/// Change default web proxy tokens validator.
+	pub fn web_proxy_tokens(mut self, tokens: Arc<WebProxyTokens>) -> Self {
+		self.web_proxy_tokens = tokens;
+		self
 	}
 
 	/// Change default signer port.
-	pub fn with_signer_address(&mut self, signer_address: Option<(String, u16)>) {
+	pub fn signer_address(mut self, signer_address: Option<(String, u16)>) -> Self {
 		self.signer_address = signer_address;
+		self
+	}
+
+	/// Change extra dapps paths (apart from `dapps_path`)
+	pub fn extra_dapps<P: AsRef<Path>>(mut self, extra_dapps: &[P]) -> Self {
+		self.extra_dapps = extra_dapps.iter().map(|p| p.as_ref().to_owned()).collect();
+		self
 	}
 
 	/// Asynchronously start server with no authentication,
 	/// returns result with `Server` handle on success or an error.
-	pub fn start_unsecured_http(&self, addr: &SocketAddr, hosts: Option<Vec<String>>) -> Result<Server, ServerError> {
+	pub fn start_unsecured_http(self, addr: &SocketAddr, hosts: Option<Vec<String>>) -> Result<Server, ServerError> {
 		Server::start_http(
 			addr,
 			hosts,
 			NoAuth,
 			self.handler.clone(),
 			self.dapps_path.clone(),
+			self.extra_dapps.clone(),
 			self.signer_address.clone(),
 			self.registrar.clone(),
 			self.sync_status.clone(),
+			self.web_proxy_tokens.clone(),
+			self.remote.clone(),
+			self.fetch_client()?,
 		)
 	}
 
 	/// Asynchronously start server with `HTTP Basic Authentication`,
 	/// return result with `Server` handle on success or an error.
-	pub fn start_basic_auth_http(&self, addr: &SocketAddr, hosts: Option<Vec<String>>, username: &str, password: &str) -> Result<Server, ServerError> {
+	pub fn start_basic_auth_http(self, addr: &SocketAddr, hosts: Option<Vec<String>>, username: &str, password: &str) -> Result<Server, ServerError> {
 		Server::start_http(
 			addr,
 			hosts,
 			HttpBasicAuth::single_user(username, password),
 			self.handler.clone(),
 			self.dapps_path.clone(),
+			self.extra_dapps.clone(),
 			self.signer_address.clone(),
 			self.registrar.clone(),
 			self.sync_status.clone(),
+			self.web_proxy_tokens.clone(),
+			self.remote.clone(),
+			self.fetch_client()?,
 		)
 	}
+
+	fn fetch_client(&self) -> Result<T, ServerError> {
+		match self.fetch.clone() {
+			Some(fetch) => Ok(fetch),
+			None => T::new().map_err(|_| ServerError::FetchInitialization),
+		}
+	}
 }
 
 /// Webapps HTTP server.
@@ -207,20 +277,37 @@ impl Server {
 		}
 	}
 
-	fn start_http<A: Authorization + 'static>(
+	fn start_http<A: Authorization + 'static, F: Fetch>(
 		addr: &SocketAddr,
 		hosts: Option<Vec<String>>,
 		authorization: A,
 		handler: Arc<IoHandler>,
-		dapps_path: String,
+		dapps_path: PathBuf,
+		extra_dapps: Vec<PathBuf>,
 		signer_address: Option<(String, u16)>,
 		registrar: Arc<ContractClient>,
 		sync_status: Arc<SyncStatus>,
+		web_proxy_tokens: Arc<WebProxyTokens>,
+		remote: Remote,
+		fetch: F,
 	) -> Result<Server, ServerError> {
 		let panic_handler = Arc::new(Mutex::new(None));
 		let authorization = Arc::new(authorization);
-		let content_fetcher = Arc::new(apps::fetcher::ContentFetcher::new(apps::urlhint::URLHintContract::new(registrar), sync_status, signer_address.clone()));
-		let endpoints = Arc::new(apps::all_endpoints(dapps_path, signer_address.clone()));
+		let content_fetcher = Arc::new(apps::fetcher::ContentFetcher::new(
+			hash_fetch::urlhint::URLHintContract::new(registrar),
+			sync_status,
+			signer_address.clone(),
+			remote.clone(),
+			fetch.clone(),
+		));
+		let endpoints = Arc::new(apps::all_endpoints(
+			dapps_path,
+			extra_dapps,
+			signer_address.clone(),
+			web_proxy_tokens,
+			remote.clone(),
+			fetch.clone(),
+		));
 		let cors_domains = Self::cors_domains(signer_address.clone());
 
 		let special = Arc::new({
@@ -235,7 +322,7 @@ impl Server {
 		});
 		let hosts = Self::allowed_hosts(hosts, format!("{}", addr));
 
-		try!(hyper::Server::http(addr))
+		hyper::Server::http(addr)?
 			.handle(move |ctrl| router::Router::new(
 				ctrl,
 				signer_address.clone(),
@@ -267,7 +354,11 @@ impl Server {
 	#[cfg(test)]
 	/// Returns address that this server is bound to.
 	pub fn addr(&self) -> &SocketAddr {
-		self.server.as_ref().expect("server is always Some at the start; it's consumed only when object is dropped; qed").addr()
+		self.server.as_ref()
+			.expect("server is always Some at the start; it's consumed only when object is dropped; qed")
+			.addrs()
+			.first()
+			.expect("You cannot start the server without binding to at least one address; qed")
 	}
 }
 
@@ -284,6 +375,8 @@ pub enum ServerError {
 	IoError(std::io::Error),
 	/// Other `hyper` error
 	Other(hyper::error::Error),
+	/// Fetch service initialization error
+	FetchInitialization,
 }
 
 impl From<hyper::error::Error> for ServerError {
@@ -296,7 +389,7 @@ impl From<hyper::error::Error> for ServerError {
 }
 
 /// Random filename
-pub fn random_filename() -> String {
+fn random_filename() -> String {
 	use ::rand::Rng;
 	let mut rng = ::rand::OsRng::new().unwrap();
 	rng.gen_ascii_chars().take(12).collect()

dapps/src/page/builtin.rs

@@ -1,4 +1,4 @@
-// Copyright 2015, 2016 Ethcore (UK) Ltd.
+// Copyright 2015, 2016 Parity Technologies (UK) Ltd.
 // This file is part of Parity.
 
 // Parity is free software: you can redistribute it and/or modify

dapps/src/page/handler.rs

@@ -1,4 +1,4 @@
-// Copyright 2015, 2016 Ethcore (UK) Ltd.
+// Copyright 2015, 2016 Parity Technologies (UK) Ltd.
 // This file is part of Parity.
 
 // Parity is free software: you can redistribute it and/or modify
@@ -14,7 +14,6 @@
 // You should have received a copy of the GNU General Public License
 // along with Parity.  If not, see <http://www.gnu.org/licenses/>.
 
-use std::io::Write;
 use time::{self, Duration};
 
 use hyper::header;
@@ -84,13 +83,19 @@ impl Default for PageCache {
 	}
 }
 
+/// A generic type for `PageHandler` allowing to set the URL.
+/// Used by dapps fetching to set the URL after the content was downloaded.
+pub trait PageHandlerWaiting: server::Handler<HttpStream> + Send {
+	fn set_uri(&mut self, uri: &RequestUri);
+}
+
 /// A handler for a single webapp.
 /// Resolves correct paths and serves as a plumbing code between
 /// hyper server and dapp.
 pub struct PageHandler<T: Dapp> {
 	/// A Dapp.
 	pub app: T,
-	/// File currently being served (or `None` if file does not exist).
+	/// File currently being served
 	pub file: ServedFile<T>,
 	/// Optional prefix to strip from path.
 	pub prefix: Option<String>,
@@ -102,6 +107,21 @@ pub struct PageHandler<T: Dapp> {
 	pub cache: PageCache,
 }
 
+impl<T: Dapp> PageHandlerWaiting for PageHandler<T> {
+	fn set_uri(&mut self, uri: &RequestUri) {
+		trace!(target: "dapps", "Setting URI: {:?}", uri);
+		self.file = match *uri {
+			RequestUri::AbsolutePath { ref path, .. } => {
+				self.app.file(&self.extract_path(path))
+			},
+			RequestUri::AbsoluteUri(ref url) => {
+				self.app.file(&self.extract_path(url.path()))
+			},
+			_ => None,
+		}.map_or_else(|| ServedFile::new(self.safe_to_embed_on.clone()), |f| ServedFile::File(f));
+	}
+}
+
 impl<T: Dapp> PageHandler<T> {
 	fn extract_path(&self, path: &str) -> String {
 		let app_id = &self.path.app_id;
@@ -125,15 +145,7 @@ impl<T: Dapp> PageHandler<T> {
 
 impl<T: Dapp> server::Handler<HttpStream> for PageHandler<T> {
 	fn on_request(&mut self, req: server::Request<HttpStream>) -> Next {
-		self.file = match *req.uri() {
-			RequestUri::AbsolutePath(ref path) => {
-				self.app.file(&self.extract_path(path))
-			},
-			RequestUri::AbsoluteUri(ref url) => {
-				self.app.file(&self.extract_path(url.path()))
-			},
-			_ => None,
-		}.map_or_else(|| ServedFile::new(self.safe_to_embed_on.clone()), |f| ServedFile::File(f));
+		self.set_uri(req.uri());
 		Next::write()
 	}
 

dapps/src/page/local.rs

@@ -1,4 +1,4 @@
-// Copyright 2015, 2016 Ethcore (UK) Ltd.
+// Copyright 2015, 2016 Parity Technologies (UK) Ltd.
 // This file is part of Parity.
 
 // Parity is free software: you can redistribute it and/or modify
@@ -18,13 +18,14 @@ use mime_guess;
 use std::io::{Seek, Read, SeekFrom};
 use std::fs;
 use std::path::{Path, PathBuf};
-use page::handler::{self, PageCache};
+use page::handler::{self, PageCache, PageHandlerWaiting};
 use endpoint::{Endpoint, EndpointInfo, EndpointPath, Handler};
+use mime::Mime;
 
 #[derive(Debug, Clone)]
 pub struct LocalPageEndpoint {
 	path: PathBuf,
-	mime: Option<String>,
+	mime: Option<Mime>,
 	info: Option<EndpointInfo>,
 	cache: PageCache,
 	embeddable_on: Option<(String, u16)>,
@@ -41,7 +42,7 @@ impl LocalPageEndpoint {
 		}
 	}
 
-	pub fn single_file(path: PathBuf, mime: String, cache: PageCache) -> Self {
+	pub fn single_file(path: PathBuf, mime: Mime, cache: PageCache) -> Self {
 		LocalPageEndpoint {
 			path: path,
 			mime: Some(mime),
@@ -54,6 +55,36 @@ impl LocalPageEndpoint {
 	pub fn path(&self) -> PathBuf {
 		self.path.clone()
 	}
+
+	fn page_handler_with_mime(&self, path: EndpointPath, mime: &Mime) -> handler::PageHandler<LocalSingleFile> {
+		handler::PageHandler {
+			app: LocalSingleFile { path: self.path.clone(), mime: format!("{}", mime) },
+			prefix: None,
+			path: path,
+			file: handler::ServedFile::new(None),
+			safe_to_embed_on: self.embeddable_on.clone(),
+			cache: self.cache,
+		}
+	}
+
+	fn page_handler(&self, path: EndpointPath) -> handler::PageHandler<LocalDapp> {
+		handler::PageHandler {
+			app: LocalDapp { path: self.path.clone() },
+			prefix: None,
+			path: path,
+			file: handler::ServedFile::new(None),
+			safe_to_embed_on: self.embeddable_on.clone(),
+			cache: self.cache,
+		}
+	}
+
+	pub fn to_page_handler(&self, path: EndpointPath) -> Box<PageHandlerWaiting> {
+		if let Some(ref mime) = self.mime {
+			Box::new(self.page_handler_with_mime(path, mime))
+		} else {
+			Box::new(self.page_handler(path))
+		}
+	}
 }
 
 impl Endpoint for LocalPageEndpoint {
@@ -63,23 +94,9 @@ impl Endpoint for LocalPageEndpoint {
 
 	fn to_handler(&self, path: EndpointPath) -> Box<Handler> {
 		if let Some(ref mime) = self.mime {
-			Box::new(handler::PageHandler {
-				app: LocalSingleFile { path: self.path.clone(), mime: mime.clone() },
-				prefix: None,
-				path: path,
-				file: handler::ServedFile::new(None),
-				safe_to_embed_on: self.embeddable_on.clone(),
-				cache: self.cache,
-			})
+			Box::new(self.page_handler_with_mime(path, mime))
 		} else {
-			Box::new(handler::PageHandler {
-				app: LocalDapp { path: self.path.clone() },
-				prefix: None,
-				path: path,
-				file: handler::ServedFile::new(None),
-				safe_to_embed_on: self.embeddable_on.clone(),
-				cache: self.cache,
-			})
+			Box::new(self.page_handler(path))
 		}
 	}
 }

dapps/src/page/mod.rs

@@ -1,4 +1,4 @@
-// Copyright 2015, 2016 Ethcore (UK) Ltd.
+// Copyright 2015, 2016 Parity Technologies (UK) Ltd.
 // This file is part of Parity.
 
 // Parity is free software: you can redistribute it and/or modify
@@ -21,5 +21,5 @@ mod handler;
 
 pub use self::local::LocalPageEndpoint;
 pub use self::builtin::PageEndpoint;
-pub use self::handler::PageCache;
+pub use self::handler::{PageCache, PageHandlerWaiting};
 

dapps/src/proxypac.rs

@@ -1,4 +1,4 @@
-// Copyright 2015, 2016 Ethcore (UK) Ltd.
+// Copyright 2015, 2016 Parity Technologies (UK) Ltd.
 // This file is part of Parity.
 
 // Parity is free software: you can redistribute it and/or modify

dapps/src/router/auth.rs

@@ -1,4 +1,4 @@
-// Copyright 2015, 2016 Ethcore (UK) Ltd.
+// Copyright 2015, 2016 Parity Technologies (UK) Ltd.
 // This file is part of Parity.
 
 // Parity is free software: you can redistribute it and/or modify

dapps/src/router/host_validation.rs

@@ -1,4 +1,4 @@
-// Copyright 2015, 2016 Ethcore (UK) Ltd.
+// Copyright 2015, 2016 Parity Technologies (UK) Ltd.
 // This file is part of Parity.
 
 // Parity is free software: you can redistribute it and/or modify

dapps/src/router/mod.rs

@@ -1,4 +1,4 @@
-// Copyright 2015, 2016 Ethcore (UK) Ltd.
+// Copyright 2015, 2016 Parity Technologies (UK) Ltd.
 // This file is part of Parity.
 
 // Parity is free software: you can redistribute it and/or modify
@@ -21,15 +21,16 @@ pub mod auth;
 mod host_validation;
 
 use address;
+use std::cmp;
 use std::sync::Arc;
 use std::collections::HashMap;
 use url::{Url, Host};
-use hyper::{self, server, Next, Encoder, Decoder, Control, StatusCode};
+use hyper::{self, server, header, Next, Encoder, Decoder, Control, StatusCode};
 use hyper::net::HttpStream;
 use apps::{self, DAPPS_DOMAIN};
-use apps::fetcher::ContentFetcher;
+use apps::fetcher::Fetcher;
 use endpoint::{Endpoint, Endpoints, EndpointPath};
-use handlers::{Redirection, extract_url, ContentHandler};
+use handlers::{self, Redirection, ContentHandler};
 use self::auth::{Authorization, Authorized};
 
 /// Special endpoints are accessible on every domain (every dapp)
@@ -45,7 +46,7 @@ pub struct Router<A: Authorization + 'static> {
 	control: Option<Control>,
 	signer_address: Option<(String, u16)>,
 	endpoints: Arc<Endpoints>,
-	fetch: Arc<ContentFetcher>,
+	fetch: Arc<Fetcher>,
 	special: Arc<HashMap<SpecialEndpoint, Box<Endpoint>>>,
 	authorization: Arc<A>,
 	allowed_hosts: Option<Vec<String>>,
@@ -57,9 +58,11 @@ impl<A: Authorization + 'static> server::Handler<HttpStream> for Router<A> {
 	fn on_request(&mut self, req: server::Request<HttpStream>) -> Next {
 
 		// Choose proper handler depending on path / domain
-		let url = extract_url(&req);
+		let url = handlers::extract_url(&req);
 		let endpoint = extract_endpoint(&url);
+		let referer = extract_referer_endpoint(&req);
 		let is_utils = endpoint.1 == SpecialEndpoint::Utils;
+		let is_get_request = *req.method() == hyper::Method::Get;
 
 		trace!(target: "dapps", "Routing request to {:?}. Details: {:?}", url, req);
 
@@ -83,25 +86,42 @@ impl<A: Authorization + 'static> server::Handler<HttpStream> for Router<A> {
 			return self.handler.on_request(req);
 		}
 
+
 		let control = self.control.take().expect("on_request is called only once; control is always defined at start; qed");
 		debug!(target: "dapps", "Handling endpoint request: {:?}", endpoint);
-		self.handler = match endpoint {
+		self.handler = match (endpoint.0, endpoint.1, referer) {
+			// Handle invalid web requests that we can recover from
+			(ref path, SpecialEndpoint::None, Some((ref referer, ref referer_url)))
+				if is_get_request
+					&& referer.app_id == apps::WEB_PATH
+					&& self.endpoints.contains_key(apps::WEB_PATH)
+					&& !is_web_endpoint(path)
+				=>
+			{
+				trace!(target: "dapps", "Redirecting to correct web request: {:?}", referer_url);
+				// TODO [ToDr] Some nice util for this!
+				let using_domain = if referer.using_dapps_domains { 0 } else { 1 };
+				let len = cmp::min(referer_url.path.len(), using_domain + 3); // token + protocol + hostname
+				let base = referer_url.path[..len].join("/");
+				let requested = url.map(|u| u.path.join("/")).unwrap_or_default();
+				Redirection::boxed(&format!("/{}/{}", base, requested))
+			},
 			// First check special endpoints
-			(ref path, ref endpoint) if self.special.contains_key(endpoint) => {
+			(ref path, ref endpoint, _) if self.special.contains_key(endpoint) => {
 				trace!(target: "dapps", "Resolving to special endpoint.");
 				self.special.get(endpoint)
 					.expect("special known to contain key; qed")
 					.to_async_handler(path.clone().unwrap_or_default(), control)
 			},
 			// Then delegate to dapp
-			(Some(ref path), _) if self.endpoints.contains_key(&path.app_id) => {
+			(Some(ref path), _, _) if self.endpoints.contains_key(&path.app_id) => {
 				trace!(target: "dapps", "Resolving to local/builtin dapp.");
 				self.endpoints.get(&path.app_id)
-					.expect("special known to contain key; qed")
+					.expect("endpoints known to contain key; qed")
 					.to_async_handler(path.clone(), control)
 			},
 			// Try to resolve and fetch the dapp
-			(Some(ref path), _) if self.fetch.contains(&path.app_id) => {
+			(Some(ref path), _, _) if self.fetch.contains(&path.app_id) => {
 				trace!(target: "dapps", "Resolving to fetchable content.");
 				self.fetch.to_async_handler(path.clone(), control)
 			},
@@ -110,7 +130,7 @@ impl<A: Authorization + 'static> server::Handler<HttpStream> for Router<A> {
 			// It should be safe to remove it in (near) future.
 			//
 			// 404 for non-existent content
-			(Some(ref path), _) if *req.method() == hyper::Method::Get && path.app_id != "home" => {
+			(Some(ref path), _, _) if is_get_request && path.app_id != "home" => {
 				trace!(target: "dapps", "Resolving to 404.");
 				Box::new(ContentHandler::error(
 					StatusCode::NotFound,
@@ -121,7 +141,7 @@ impl<A: Authorization + 'static> server::Handler<HttpStream> for Router<A> {
 				))
 			},
 			// Redirect any other GET request to signer.
-			_ if *req.method() == hyper::Method::Get => {
+			_ if is_get_request => {
 				if let Some(signer_address) = self.signer_address.clone() {
 					trace!(target: "dapps", "Redirecting to signer interface.");
 					Redirection::boxed(&format!("http://{}", address(signer_address)))
@@ -169,7 +189,7 @@ impl<A: Authorization> Router<A> {
 	pub fn new(
 		control: Control,
 		signer_address: Option<(String, u16)>,
-		content_fetcher: Arc<ContentFetcher>,
+		content_fetcher: Arc<Fetcher>,
 		endpoints: Arc<Endpoints>,
 		special: Arc<HashMap<SpecialEndpoint, Box<Endpoint>>>,
 		authorization: Arc<A>,
@@ -192,6 +212,23 @@ impl<A: Authorization> Router<A> {
 	}
 }
 
+fn is_web_endpoint(path: &Option<EndpointPath>) -> bool {
+	match *path {
+		Some(ref path) if path.app_id == apps::WEB_PATH => true,
+		_ => false,
+	}
+}
+
+fn extract_referer_endpoint(req: &server::Request<HttpStream>) -> Option<(EndpointPath, Url)> {
+	let referer = req.headers().get::<header::Referer>();
+
+	let url = referer.and_then(|referer| Url::parse(&referer.0).ok());
+	url.and_then(|url| {
+		let option = Some(url);
+		extract_endpoint(&option).0.map(|endpoint| (endpoint, option.expect("Just wrapped; qed")))
+	})
+}
+
 fn extract_endpoint(url: &Option<Url>) -> (Option<EndpointPath>, SpecialEndpoint) {
 	fn special_endpoint(url: &Url) -> SpecialEndpoint {
 		if url.path.len() <= 1 {

dapps/src/rpc.rs

@@ -1,4 +1,4 @@
-// Copyright 2015, 2016 Ethcore (UK) Ltd.
+// Copyright 2015, 2016 Parity Technologies (UK) Ltd.
 // This file is part of Parity.
 
 // Parity is free software: you can redistribute it and/or modify
@@ -16,13 +16,14 @@
 
 use std::sync::{Arc, Mutex};
 use hyper;
-use jsonrpc_core::IoHandler;
-use jsonrpc_http_server::{ServerHandler, PanicHandler, AccessControlAllowOrigin};
+
+use jsonrpc_core::{IoHandler, ResponseHandler, Request, Response};
+use jsonrpc_http_server::{ServerHandler, PanicHandler, AccessControlAllowOrigin, RpcHandler};
 use endpoint::{Endpoint, EndpointPath, Handler};
 
 pub fn rpc(handler: Arc<IoHandler>, panic_handler: Arc<Mutex<Option<Box<Fn() -> () + Send>>>>) -> Box<Endpoint> {
 	Box::new(RpcEndpoint {
-		handler: handler,
+		handler: Arc::new(RpcMiddleware::new(handler)),
 		panic_handler: panic_handler,
 		cors_domain: None,
 		// NOTE [ToDr] We don't need to do any hosts validation here. It's already done in router.
@@ -31,7 +32,7 @@ pub fn rpc(handler: Arc<IoHandler>, panic_handler: Arc<Mutex<Option<Box<Fn() ->
 }
 
 struct RpcEndpoint {
-	handler: Arc<IoHandler>,
+	handler: Arc<RpcMiddleware>,
 	panic_handler: Arc<Mutex<Option<Box<Fn() -> () + Send>>>>,
 	cors_domain: Option<Vec<AccessControlAllowOrigin>>,
 	allowed_hosts: Option<Vec<String>>,
@@ -49,3 +50,86 @@ impl Endpoint for RpcEndpoint {
 		))
 	}
 }
+
+struct RpcMiddleware {
+	handler: Arc<IoHandler>,
+	methods: Vec<String>,
+}
+
+impl RpcMiddleware {
+	fn new(handler: Arc<IoHandler>) -> Self {
+		RpcMiddleware {
+			handler: handler,
+			methods: vec!["eth_accounts".into(), "parity_accountsInfo".into()],
+		}
+	}
+
+	/// Appends additional parameter for specific calls.
+	fn augment_request(&self, request: &mut Request, meta: Option<Meta>) {
+		use jsonrpc_core::{Call, Params, to_value};
+
+		fn augment_call(call: &mut Call, meta: Option<&Meta>, methods: &Vec<String>) {
+			match (call, meta) {
+				(&mut Call::MethodCall(ref mut method_call), Some(meta)) if methods.contains(&method_call.method) => {
+					let session = to_value(&meta.app_id);
+
+					let params = match method_call.params {
+						Some(Params::Array(ref vec)) if vec.len() == 0 => Some(Params::Array(vec![session])),
+						// invalid params otherwise
+						_ => None,
+					};
+
+					method_call.params = params;
+				},
+				_ => {}
+			}
+		}
+
+		match *request {
+			Request::Single(ref mut call) => augment_call(call, meta.as_ref(), &self.methods),
+			Request::Batch(ref mut vec) => {
+				for mut call in vec {
+					augment_call(call, meta.as_ref(), &self.methods)
+				}
+			},
+		}
+	}
+}
+
+#[derive(Debug)]
+struct Meta {
+	app_id: String,
+}
+
+impl RpcHandler for RpcMiddleware {
+	type Metadata = Meta;
+
+	fn read_metadata(&self, request: &hyper::server::Request<hyper::net::HttpStream>) -> Option<Self::Metadata> {
+		request.headers().get::<hyper::header::Referer>()
+			.and_then(|referer| hyper::Url::parse(referer).ok())
+			.and_then(|url| {
+				url.path_segments()
+					.and_then(|mut split| split.next())
+					.map(|app_id| Meta {
+						app_id: app_id.to_owned(),
+					})
+			})
+	}
+
+	fn handle_request<H>(&self, request_str: &str, response_handler: H, meta: Option<Self::Metadata>) where
+		H: ResponseHandler<Option<String>, Option<String>> + 'static
+	{
+		let handler = IoHandler::convert_handler(response_handler);
+		let request = IoHandler::read_request(request_str);
+		trace!(target: "rpc", "Request metadata: {:?}", meta);
+
+		match request {
+			Ok(mut request) => {
+				self.augment_request(&mut request, meta);
+				self.handler.request_handler().handle_request(request, handler, None)
+			},
+			Err(error) => handler.send(Some(Response::from(error))),
+		}
+	}
+}
+

dapps/src/tests/api.rs

@@ -1,4 +1,4 @@
-// Copyright 2015, 2016 Ethcore (UK) Ltd.
+// Copyright 2015, 2016 Parity Technologies (UK) Ltd.
 // This file is part of Parity.
 
 // Parity is free software: you can redistribute it and/or modify

dapps/src/tests/authorization.rs

@@ -1,4 +1,4 @@
-// Copyright 2015, 2016 Ethcore (UK) Ltd.
+// Copyright 2015, 2016 Parity Technologies (UK) Ltd.
 // This file is part of Parity.
 
 // Parity is free software: you can redistribute it and/or modify

dapps/src/tests/fetch.rs

@@ -1,4 +1,4 @@
-// Copyright 2015, 2016 Ethcore (UK) Ltd.
+// Copyright 2015, 2016 Parity Technologies (UK) Ltd.
 // This file is part of Parity.
 
 // Parity is free software: you can redistribute it and/or modify
@@ -14,7 +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/>.
 
-use tests::helpers::{serve_with_registrar, serve_with_registrar_and_sync, request, assert_security_headers_for_embed};
+use devtools::http_client;
+use rustc_serialize::hex::FromHex;
+use tests::helpers::{
+	serve_with_registrar, serve_with_registrar_and_sync, serve_with_fetch,
+	serve_with_registrar_and_fetch, serve_with_registrar_and_fetch_and_threads,
+	request, assert_security_headers_for_embed,
+};
 
 #[test]
 fn should_resolve_dapp() {
@@ -32,7 +38,7 @@ fn should_resolve_dapp() {
 	);
 
 	// then
-	assert_eq!(response.status, "HTTP/1.1 404 Not Found".to_owned());
+	response.assert_status("HTTP/1.1 404 Not Found");
 	assert_eq!(registrar.calls.lock().len(), 2);
 	assert_security_headers_for_embed(&response.headers);
 }
@@ -41,14 +47,6 @@ fn should_resolve_dapp() {
 fn should_return_503_when_syncing_but_should_make_the_calls() {
 	// given
 	let (server, registrar) = serve_with_registrar_and_sync();
-	{
-		let mut responses = registrar.responses.lock();
-		let res1 = responses.get(0).unwrap().clone();
-		let res2 = responses.get(1).unwrap().clone();
-		// Registrar will be called twice - fill up the responses.
-		responses.push(res1);
-		responses.push(res2);
-	}
 
 	// when
 	let response = request(server,
@@ -61,7 +59,378 @@ fn should_return_503_when_syncing_but_should_make_the_calls() {
 	);
 
 	// then
-	assert_eq!(response.status, "HTTP/1.1 503 Service Unavailable".to_owned());
+	response.assert_status("HTTP/1.1 503 Service Unavailable");
 	assert_eq!(registrar.calls.lock().len(), 4);
 	assert_security_headers_for_embed(&response.headers);
 }
+
+const GAVCOIN_DAPP: &'static str = "00000000000000000000000000000000000000000000000000000000000000609faf32e1e3845e237cc6efd27187cee13b3b99db000000000000000000000000000000000000000000000000d8bd350823e28ff75e74a34215faefdc8a52fd8e00000000000000000000000000000000000000000000000000000000000000116761766f66796f726b2f676176636f696e000000000000000000000000000000";
+const GAVCOIN_ICON: &'static str = "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";
+
+#[test]
+fn should_return_502_on_hash_mismatch() {
+	// given
+	let (server, fetch, registrar) = serve_with_registrar_and_fetch();
+	let gavcoin = GAVCOIN_DAPP.from_hex().unwrap();
+	registrar.set_result(
+		"94f093625c06887d94d9fee0d5f9cc4aaa46f33d24d1c7e4b5237e7c37d547dd".parse().unwrap(),
+		Ok(gavcoin.clone())
+	);
+
+	// when
+	let response = request(server,
+		"\
+			GET / HTTP/1.1\r\n\
+			Host: 94f093625c06887d94d9fee0d5f9cc4aaa46f33d24d1c7e4b5237e7c37d547dd.parity\r\n\
+			Connection: close\r\n\
+			\r\n\
+		"
+	);
+
+	// then
+	assert_eq!(registrar.calls.lock().len(), 4);
+
+	fetch.assert_requested("https://codeload.github.com/gavofyork/gavcoin/zip/9faf32e1e3845e237cc6efd27187cee13b3b99db");
+	fetch.assert_no_more_requests();
+
+	response.assert_status("HTTP/1.1 502 Bad Gateway");
+	assert!(response.body.contains("HashMismatch"), "Expected hash mismatch response, got: {:?}", response.body);
+	assert_security_headers_for_embed(&response.headers);
+}
+
+#[test]
+fn should_return_error_for_invalid_dapp_zip() {
+	// given
+	let (server, fetch, registrar) = serve_with_registrar_and_fetch();
+	let gavcoin = GAVCOIN_DAPP.from_hex().unwrap();
+	registrar.set_result(
+		"2be00befcf008bc0e7d9cdefc194db9c75352e8632f48498b5a6bfce9f02c88e".parse().unwrap(),
+		Ok(gavcoin.clone())
+	);
+
+	// when
+	let response = request(server,
+		"\
+			GET / HTTP/1.1\r\n\
+			Host: 2be00befcf008bc0e7d9cdefc194db9c75352e8632f48498b5a6bfce9f02c88e.parity\r\n\
+			Connection: close\r\n\
+			\r\n\
+		"
+	);
+
+	// then
+	assert_eq!(registrar.calls.lock().len(), 4);
+
+	fetch.assert_requested("https://codeload.github.com/gavofyork/gavcoin/zip/9faf32e1e3845e237cc6efd27187cee13b3b99db");
+	fetch.assert_no_more_requests();
+
+	response.assert_status("HTTP/1.1 502 Bad Gateway");
+	assert!(response.body.contains("InvalidArchive"), "Expected invalid zip response, got: {:?}", response.body);
+	assert_security_headers_for_embed(&response.headers);
+}
+
+#[test]
+fn should_return_fetched_dapp_content() {
+	// given
+	let (server, fetch, registrar) = serve_with_registrar_and_fetch();
+	let gavcoin = GAVCOIN_DAPP.from_hex().unwrap();
+	registrar.set_result(
+		"9c94e154dab8acf859b30ee80fc828fb1d38359d938751b65db71d460588d82a".parse().unwrap(),
+		Ok(gavcoin.clone())
+	);
+	fetch.set_response(include_bytes!("../../res/gavcoin.zip"));
+
+	// when
+	let response1 = http_client::request(server.addr(),
+		"\
+			GET /index.html HTTP/1.1\r\n\
+			Host: 9c94e154dab8acf859b30ee80fc828fb1d38359d938751b65db71d460588d82a.parity\r\n\
+			Connection: close\r\n\
+			\r\n\
+		"
+	);
+	let response2 = http_client::request(server.addr(),
+		"\
+			GET /manifest.json HTTP/1.1\r\n\
+			Host: 9c94e154dab8acf859b30ee80fc828fb1d38359d938751b65db71d460588d82a.parity\r\n\
+			Connection: close\r\n\
+			\r\n\
+		"
+	);
+
+	// then
+	assert_eq!(registrar.calls.lock().len(), 4);
+
+	fetch.assert_requested("https://codeload.github.com/gavofyork/gavcoin/zip/9faf32e1e3845e237cc6efd27187cee13b3b99db");
+	fetch.assert_no_more_requests();
+
+	response1.assert_status("HTTP/1.1 200 OK");
+	assert_security_headers_for_embed(&response1.headers);
+	assert_eq!(
+		response1.body,
+		r#"18
+<h1>Hello Gavcoin!</h1>
+
+"#
+	);
+
+	response2.assert_status("HTTP/1.1 200 OK");
+	assert_security_headers_for_embed(&response2.headers);
+	assert_eq!(
+		response2.body,
+		r#"BE
+{
+  "id": "9c94e154dab8acf859b30ee80fc828fb1d38359d938751b65db71d460588d82a",
+  "name": "Gavcoin",
+  "description": "Gavcoin",
+  "version": "1.0.0",
+  "author": "",
+  "iconUrl": "icon.png"
+}
+0
+
+"#
+	);
+}
+
+#[test]
+fn should_return_fetched_content() {
+	// given
+	let (server, fetch, registrar) = serve_with_registrar_and_fetch();
+	let gavcoin = GAVCOIN_ICON.from_hex().unwrap();
+	registrar.set_result(
+		"2be00befcf008bc0e7d9cdefc194db9c75352e8632f48498b5a6bfce9f02c88e".parse().unwrap(),
+		Ok(gavcoin.clone())
+	);
+
+	// when
+	let response = request(server,
+		"\
+			GET / HTTP/1.1\r\n\
+			Host: 2be00befcf008bc0e7d9cdefc194db9c75352e8632f48498b5a6bfce9f02c88e.parity\r\n\
+			Connection: close\r\n\
+			\r\n\
+		"
+	);
+
+	// then
+	assert_eq!(registrar.calls.lock().len(), 4);
+
+	fetch.assert_requested("https://raw.githubusercontent.com/ethcore/dapp-assets/b88e983abaa1a6a6345b8d9448c15b117ddb540e/tokens/gavcoin-64x64.png");
+	fetch.assert_no_more_requests();
+
+	response.assert_status("HTTP/1.1 200 OK");
+	response.assert_security_headers_present(None);
+}
+
+#[test]
+fn should_cache_content() {
+	// given
+	let (server, fetch, registrar) = serve_with_registrar_and_fetch();
+	let gavcoin = GAVCOIN_ICON.from_hex().unwrap();
+	registrar.set_result(
+		"2be00befcf008bc0e7d9cdefc194db9c75352e8632f48498b5a6bfce9f02c88e".parse().unwrap(),
+		Ok(gavcoin.clone())
+	);
+	let request_str = "\
+		GET / HTTP/1.1\r\n\
+		Host: 2be00befcf008bc0e7d9cdefc194db9c75352e8632f48498b5a6bfce9f02c88e.parity\r\n\
+		Connection: close\r\n\
+		\r\n\
+	";
+
+	let response = http_client::request(server.addr(), request_str);
+	fetch.assert_requested("https://raw.githubusercontent.com/ethcore/dapp-assets/b88e983abaa1a6a6345b8d9448c15b117ddb540e/tokens/gavcoin-64x64.png");
+	fetch.assert_no_more_requests();
+	response.assert_status("HTTP/1.1 200 OK");
+
+	// when
+	let response = http_client::request(server.addr(), request_str);
+
+	// then
+	fetch.assert_no_more_requests();
+	response.assert_status("HTTP/1.1 200 OK");
+}
+
+#[test]
+fn should_not_request_content_twice() {
+	use std::thread;
+
+	// given
+	let (server, fetch, registrar) = serve_with_registrar_and_fetch_and_threads(true);
+	let gavcoin = GAVCOIN_ICON.from_hex().unwrap();
+	registrar.set_result(
+		"2be00befcf008bc0e7d9cdefc194db9c75352e8632f48498b5a6bfce9f02c88e".parse().unwrap(),
+		Ok(gavcoin.clone())
+	);
+	let request_str = "\
+		GET / HTTP/1.1\r\n\
+		Host: 2be00befcf008bc0e7d9cdefc194db9c75352e8632f48498b5a6bfce9f02c88e.parity\r\n\
+		Connection: close\r\n\
+		\r\n\
+	";
+	let fire_request = || {
+		let addr = server.addr().to_owned();
+		let req = request_str.to_owned();
+		thread::spawn(move || {
+			http_client::request(&addr, &req)
+		})
+	};
+	let control = fetch.manual();
+
+	// when
+
+	// Fire two requests at the same time
+	let r1 = fire_request();
+	let r2 = fire_request();
+
+	// wait for single request in fetch, the second one should go into waiting state.
+	control.wait_for_requests(1);
+	control.respond();
+
+	let response1 = r1.join().unwrap();
+	let response2 = r2.join().unwrap();
+
+	// then
+	fetch.assert_requested("https://raw.githubusercontent.com/ethcore/dapp-assets/b88e983abaa1a6a6345b8d9448c15b117ddb540e/tokens/gavcoin-64x64.png");
+	fetch.assert_no_more_requests();
+	response1.assert_status("HTTP/1.1 200 OK");
+	response2.assert_status("HTTP/1.1 200 OK");
+}
+
+#[test]
+fn should_stream_web_content() {
+	// given
+	let (server, fetch) = serve_with_fetch("token");
+
+	// when
+	let response = request(server,
+		"\
+			GET /web/token/https/parity.io/ HTTP/1.1\r\n\
+			Host: localhost:8080\r\n\
+			Connection: close\r\n\
+			\r\n\
+		"
+	);
+
+	// then
+	response.assert_status("HTTP/1.1 200 OK");
+	assert_security_headers_for_embed(&response.headers);
+
+	fetch.assert_requested("https://parity.io/");
+	fetch.assert_no_more_requests();
+}
+
+#[test]
+fn should_return_error_on_invalid_token() {
+	// given
+	let (server, fetch) = serve_with_fetch("token");
+
+	// when
+	let response = request(server,
+		"\
+			GET /web/invalidtoken/https/parity.io/ HTTP/1.1\r\n\
+			Host: localhost:8080\r\n\
+			Connection: close\r\n\
+			\r\n\
+		"
+	);
+
+	// then
+	response.assert_status("HTTP/1.1 400 Bad Request");
+	assert_security_headers_for_embed(&response.headers);
+
+	fetch.assert_no_more_requests();
+}
+
+#[test]
+fn should_return_error_on_invalid_protocol() {
+	// given
+	let (server, fetch) = serve_with_fetch("token");
+
+	// when
+	let response = request(server,
+		"\
+			GET /web/token/ftp/parity.io/ HTTP/1.1\r\n\
+			Host: localhost:8080\r\n\
+			Connection: close\r\n\
+			\r\n\
+		"
+	);
+
+	// then
+	response.assert_status("HTTP/1.1 400 Bad Request");
+	assert_security_headers_for_embed(&response.headers);
+
+	fetch.assert_no_more_requests();
+}
+
+#[test]
+fn should_redirect_if_trailing_slash_is_missing() {
+	// given
+	let (server, fetch) = serve_with_fetch("token");
+
+	// when
+	let response = request(server,
+		"\
+			GET /web/token/https/parity.io HTTP/1.1\r\n\
+			Host: localhost:8080\r\n\
+			Connection: close\r\n\
+			\r\n\
+		"
+	);
+
+	// then
+	response.assert_status("HTTP/1.1 302 Found");
+	response.assert_header("Location", "/web/token/https/parity.io/");
+
+	fetch.assert_no_more_requests();
+}
+
+#[test]
+fn should_disallow_non_get_requests() {
+	// given
+	let (server, fetch) = serve_with_fetch("token");
+
+	// when
+	let response = request(server,
+		"\
+			POST /token/https/parity.io/ HTTP/1.1\r\n\
+			Host: web.parity\r\n\
+			Content-Type: application/json\r\n\
+			Connection: close\r\n\
+			\r\n\
+			123\r\n\
+			\r\n\
+		"
+	);
+
+	// then
+	response.assert_status("HTTP/1.1 405 Method Not Allowed");
+	assert_security_headers_for_embed(&response.headers);
+
+	fetch.assert_no_more_requests();
+}
+
+#[test]
+fn should_fix_absolute_requests_based_on_referer() {
+	// given
+	let (server, fetch) = serve_with_fetch("token");
+
+	// when
+	let response = request(server,
+		"\
+			GET /styles.css HTTP/1.1\r\n\
+			Host: localhost:8080\r\n\
+			Connection: close\r\n\
+			Referer: http://localhost:8080/web/token/https/parity.io/\r\n\
+			\r\n\
+		"
+	);
+
+	// then
+	response.assert_status("HTTP/1.1 302 Found");
+	response.assert_header("Location", "/web/token/https/parity.io/styles.css");
+
+	fetch.assert_no_more_requests();
+}

dapps/src/tests/helpers/fetch.rs

@@ -0,0 +1,122 @@
+// 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/>.
+
+use std::{io, thread, time};
+use std::sync::{atomic, mpsc, Arc};
+use util::Mutex;
+
+use futures::{self, Future};
+use fetch::{self, Fetch};
+
+pub struct FetchControl {
+	sender: mpsc::Sender<()>,
+	fetch: FakeFetch,
+}
+
+impl FetchControl {
+	pub fn respond(self) {
+		self.sender.send(())
+			.expect("Fetch cannot be finished without sending a response at least once.");
+	}
+
+	pub fn wait_for_requests(&self, len: usize) {
+		const MAX_TIMEOUT_MS: u64 = 5000;
+		const ATTEMPTS: u64 = 10;
+		let mut attempts_left = ATTEMPTS;
+		loop {
+			let current = self.fetch.requested.lock().len();
+
+			if current == len {
+				break;
+			} else if attempts_left == 0 {
+				panic!(
+					"Timeout reached when waiting for pending requests. Expected: {}, current: {}",
+					len, current
+				);
+			} else {
+				attempts_left -= 1;
+				// Should we handle spurious timeouts better?
+				thread::park_timeout(time::Duration::from_millis(MAX_TIMEOUT_MS / ATTEMPTS));
+			}
+		}
+	}
+}
+
+#[derive(Clone, Default)]
+pub struct FakeFetch {
+	manual: Arc<Mutex<Option<mpsc::Receiver<()>>>>,
+	response: Arc<Mutex<Option<&'static [u8]>>>,
+	asserted: Arc<atomic::AtomicUsize>,
+	requested: Arc<Mutex<Vec<String>>>,
+}
+
+impl FakeFetch {
+	pub fn set_response(&self, data: &'static [u8]) {
+		*self.response.lock() = Some(data);
+	}
+
+	pub fn manual(&self) -> FetchControl {
+		assert!(self.manual.lock().is_none(), "Only one manual control may be active.");
+		let (tx, rx) = mpsc::channel();
+		*self.manual.lock() = Some(rx);
+
+		FetchControl {
+			sender: tx,
+			fetch: self.clone(),
+		}
+	}
+
+	pub fn assert_requested(&self, url: &str) {
+		let requests = self.requested.lock();
+		let idx = self.asserted.fetch_add(1, atomic::Ordering::SeqCst);
+
+		assert_eq!(requests.get(idx), Some(&url.to_owned()), "Expected fetch from specific URL.");
+	}
+
+	pub fn assert_no_more_requests(&self) {
+		let requests = self.requested.lock();
+		let len = self.asserted.load(atomic::Ordering::SeqCst);
+		assert_eq!(requests.len(), len, "Didn't expect any more requests, got: {:?}", &requests[len..]);
+	}
+}
+
+impl Fetch for FakeFetch {
+	type Result = futures::BoxFuture<fetch::Response, fetch::Error>;
+
+	fn new() -> Result<Self, fetch::Error> where Self: Sized {
+		Ok(FakeFetch::default())
+	}
+
+	fn fetch_with_abort(&self, url: &str, _abort: fetch::Abort) -> Self::Result {
+		self.requested.lock().push(url.into());
+		let manual = self.manual.clone();
+		let response = self.response.clone();
+
+		let (tx, rx) = futures::oneshot();
+		thread::spawn(move || {
+			if let Some(rx) = manual.lock().take() {
+				// wait for manual resume
+				let _ = rx.recv();
+			}
+
+			let data = response.lock().take().unwrap_or(b"Some content");
+			let cursor = io::Cursor::new(data);
+			tx.complete(fetch::Response::from_reader(cursor));
+		});
+
+		rx.map_err(|_| fetch::Error::Aborted).boxed()
+	}
+}

dapps/src/tests/helpers/mod.rs

@@ -1,4 +1,4 @@
-// Copyright 2015, 2016 Ethcore (UK) Ltd.
+// Copyright 2015, 2016 Parity Technologies (UK) Ltd.
 // This file is part of Parity.
 
 // Parity is free software: you can redistribute it and/or modify
@@ -17,68 +17,46 @@
 use std::env;
 use std::str;
 use std::sync::Arc;
-use rustc_serialize::hex::FromHex;
 use env_logger::LogBuilder;
 
 use ServerBuilder;
 use Server;
-use apps::urlhint::ContractClient;
-use util::{Bytes, Address, Mutex, ToPretty};
+use fetch::Fetch;
 use devtools::http_client;
+use parity_reactor::Remote;
+
+mod registrar;
+mod fetch;
+
+use self::registrar::FakeRegistrar;
+use self::fetch::FakeFetch;
 
-const REGISTRAR: &'static str = "8e4e9b13d4b45cb0befc93c3061b1408f67316b2";
-const URLHINT: &'static str = "deadbeefcafe0000000000000000000000000000";
 const SIGNER_PORT: u16 = 18180;
 
-pub struct FakeRegistrar {
-	pub calls: Arc<Mutex<Vec<(String, String)>>>,
-	pub responses: Mutex<Vec<Result<Bytes, String>>>,
-}
-
-impl FakeRegistrar {
-	fn new() -> Self {
-		FakeRegistrar {
-			calls: Arc::new(Mutex::new(Vec::new())),
-			responses: Mutex::new(
-				vec![
-					Ok(format!("000000000000000000000000{}", URLHINT).from_hex().unwrap()),
-					Ok(Vec::new())
-				]
-			),
-		}
-	}
-}
-
-impl ContractClient for FakeRegistrar {
-	fn registrar(&self) -> Result<Address, String> {
-		Ok(REGISTRAR.parse().unwrap())
-	}
-
-	fn call(&self, address: Address, data: Bytes) -> Result<Bytes, String> {
-		self.calls.lock().push((address.to_hex(), data.to_hex()));
-		self.responses.lock().remove(0)
-	}
-}
-
 fn init_logger() {
 	// Initialize logger
 	if let Ok(log) = env::var("RUST_LOG") {
 		let mut builder = LogBuilder::new();
 		builder.parse(&log);
-		builder.init().expect("Logger is initialized only once.");
+		let _ = builder.init();	// ignore errors since ./test.sh will call this multiple times.
 	}
 }
 
-pub fn init_server(hosts: Option<Vec<String>>, is_syncing: bool) -> (Server, Arc<FakeRegistrar>) {
+pub fn init_server<F, B>(hosts: Option<Vec<String>>, process: F, remote: Remote) -> (Server, Arc<FakeRegistrar>) where
+	F: FnOnce(ServerBuilder) -> ServerBuilder<B>,
+	B: Fetch,
+{
 	init_logger();
 	let registrar = Arc::new(FakeRegistrar::new());
 	let mut dapps_path = env::temp_dir();
 	dapps_path.push("non-existent-dir-to-prevent-fs-files-from-loading");
-	let mut builder = ServerBuilder::new(dapps_path.to_str().unwrap().into(), registrar.clone());
-	builder.with_sync_status(Arc::new(move || is_syncing));
-	builder.with_signer_address(Some(("127.0.0.1".into(), SIGNER_PORT)));
+	let server = process(ServerBuilder::new(
+		&dapps_path, registrar.clone(), remote,
+	))
+		.signer_address(Some(("127.0.0.1".into(), SIGNER_PORT)))
+		.start_unsecured_http(&"127.0.0.1:0".parse().unwrap(), hosts).unwrap();
 	(
-		builder.start_unsecured_http(&"127.0.0.1:0".parse().unwrap(), hosts).unwrap(),
+		server,
 		registrar,
 	)
 }
@@ -88,25 +66,53 @@ pub fn serve_with_auth(user: &str, pass: &str) -> Server {
 	let registrar = Arc::new(FakeRegistrar::new());
 	let mut dapps_path = env::temp_dir();
 	dapps_path.push("non-existent-dir-to-prevent-fs-files-from-loading");
-	let mut builder = ServerBuilder::new(dapps_path.to_str().unwrap().into(), registrar);
-	builder.with_signer_address(Some(("127.0.0.1".into(), SIGNER_PORT)));
-	builder.start_basic_auth_http(&"127.0.0.1:0".parse().unwrap(), None, user, pass).unwrap()
+	ServerBuilder::new(&dapps_path, registrar.clone(), Remote::new_sync())
+		.signer_address(Some(("127.0.0.1".into(), SIGNER_PORT)))
+		.start_basic_auth_http(&"127.0.0.1:0".parse().unwrap(), None, user, pass).unwrap()
 }
 
 pub fn serve_hosts(hosts: Option<Vec<String>>) -> Server {
-	init_server(hosts, false).0
+	init_server(hosts, |builder| builder, Remote::new_sync()).0
 }
 
 pub fn serve_with_registrar() -> (Server, Arc<FakeRegistrar>) {
-	init_server(None, false)
+	init_server(None, |builder| builder, Remote::new_sync())
 }
 
 pub fn serve_with_registrar_and_sync() -> (Server, Arc<FakeRegistrar>) {
-	init_server(None, true)
+	init_server(None, |builder| {
+		builder.sync_status(Arc::new(|| true))
+	}, Remote::new_sync())
+}
+
+pub fn serve_with_registrar_and_fetch() -> (Server, FakeFetch, Arc<FakeRegistrar>) {
+	serve_with_registrar_and_fetch_and_threads(false)
+}
+
+pub fn serve_with_registrar_and_fetch_and_threads(multi_threaded: bool) -> (Server, FakeFetch, Arc<FakeRegistrar>) {
+	let fetch = FakeFetch::default();
+	let f = fetch.clone();
+	let (server, reg) = init_server(None, move |builder| {
+		builder.fetch(f.clone())
+	}, if multi_threaded { Remote::new_thread_per_future() } else { Remote::new_sync() });
+
+	(server, fetch, reg)
+}
+
+pub fn serve_with_fetch(web_token: &'static str) -> (Server, FakeFetch) {
+	let fetch = FakeFetch::default();
+	let f = fetch.clone();
+	let (server, _) = init_server(None, move |builder| {
+		builder
+			.fetch(f.clone())
+			.web_proxy_tokens(Arc::new(move |token| &token == web_token))
+	}, Remote::new_sync());
+
+	(server, fetch)
 }
 
 pub fn serve() -> Server {
-	init_server(None, false).0
+	init_server(None, |builder| builder, Remote::new_sync()).0
 }
 
 pub fn request(server: Server, request: &str) -> http_client::Response {

dapps/src/tests/helpers/registrar.rs

@@ -0,0 +1,72 @@
+// 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/>.
+
+use std::str;
+use std::sync::Arc;
+use std::collections::HashMap;
+use rustc_serialize::hex::FromHex;
+
+use hash_fetch::urlhint::ContractClient;
+use util::{Bytes, Address, Mutex, H256, ToPretty};
+
+const REGISTRAR: &'static str = "8e4e9b13d4b45cb0befc93c3061b1408f67316b2";
+const URLHINT: &'static str = "deadbeefcafe0000000000000000000000000000";
+const URLHINT_RESOLVE: &'static str = "267b6922";
+const DEFAULT_HASH: &'static str = "1472a9e190620cdf6b31f383373e45efcfe869a820c91f9ccd7eb9fb45e4985d";
+
+pub struct FakeRegistrar {
+	pub calls: Arc<Mutex<Vec<(String, String)>>>,
+	pub responses: Mutex<HashMap<(String, String), Result<Bytes, String>>>,
+}
+
+impl FakeRegistrar {
+	pub fn new() -> Self {
+		FakeRegistrar {
+			calls: Arc::new(Mutex::new(Vec::new())),
+			responses: Mutex::new({
+				let mut map = HashMap::new();
+				map.insert(
+					(REGISTRAR.into(), "6795dbcd058740ee9a5a3fb9f1cfa10752baec87e09cc45cd7027fd54708271aca300c75000000000000000000000000000000000000000000000000000000000000004000000000000000000000000000000000000000000000000000000000000000014100000000000000000000000000000000000000000000000000000000000000".into()),
+					Ok(format!("000000000000000000000000{}", URLHINT).from_hex().unwrap()),
+				);
+				map.insert(
+					(URLHINT.into(), format!("{}{}", URLHINT_RESOLVE, DEFAULT_HASH)),
+					Ok(vec![])
+				);
+				map
+			}),
+		}
+	}
+
+	pub fn set_result(&self, hash: H256, result: Result<Bytes, String>) {
+		self.responses.lock().insert(
+			(URLHINT.into(), format!("{}{:?}", URLHINT_RESOLVE, hash)),
+			result
+		);
+	}
+}
+
+impl ContractClient for FakeRegistrar {
+	fn registrar(&self) -> Result<Address, String> {
+		Ok(REGISTRAR.parse().unwrap())
+	}
+
+	fn call(&self, address: Address, data: Bytes) -> Result<Bytes, String> {
+		let call = (address.to_hex(), data.to_hex());
+		self.calls.lock().push(call.clone());
+		self.responses.lock().get(&call).cloned().expect(&format!("No response for call: {:?}", call))
+	}
+}

dapps/src/tests/mod.rs

@@ -1,4 +1,4 @@
-// Copyright 2015, 2016 Ethcore (UK) Ltd.
+// Copyright 2015, 2016 Parity Technologies (UK) Ltd.
 // This file is part of Parity.
 
 // Parity is free software: you can redistribute it and/or modify

dapps/src/tests/redirection.rs

@@ -1,4 +1,4 @@
-// Copyright 2015, 2016 Ethcore (UK) Ltd.
+// Copyright 2015, 2016 Parity Technologies (UK) Ltd.
 // This file is part of Parity.
 
 // Parity is free software: you can redistribute it and/or modify

dapps/src/tests/validation.rs

@@ -1,4 +1,4 @@
-// Copyright 2015, 2016 Ethcore (UK) Ltd.
+// Copyright 2015, 2016 Parity Technologies (UK) Ltd.
 // This file is part of Parity.
 
 // Parity is free software: you can redistribute it and/or modify

dapps/src/url.rs

@@ -1,4 +1,4 @@
-// Copyright 2015, 2016 Ethcore (UK) Ltd.
+// Copyright 2015, 2016 Parity Technologies (UK) Ltd.
 // This file is part of Parity.
 
 // Parity is free software: you can redistribute it and/or modify
@@ -37,6 +37,9 @@ pub struct Url {
 	/// Empty entries of `""` correspond to trailing slashes.
 	pub path: Vec<String>,
 
+	/// The URL query.
+	pub query: Option<String>,
+
 	/// The URL username field, from the userinfo section of the URL.
 	///
 	/// `None` if the `@` character was not part of the input OR
@@ -82,15 +85,17 @@ impl Url {
 			_ => None,
 		};
 
-		let port = try!(raw_url.port_or_known_default().ok_or_else(|| format!("Unknown port for scheme: `{}`", raw_url.scheme())));
-		let host = try!(raw_url.host().ok_or_else(|| "Valid host, because only data:, mailto: protocols does not have host.".to_owned())).to_owned();
-		let path = try!(raw_url.path_segments().ok_or_else(|| "Valid path segments. In HTTP we won't get cannot-be-a-base URLs".to_owned()))
+		let port = raw_url.port_or_known_default().ok_or_else(|| format!("Unknown port for scheme: `{}`", raw_url.scheme()))?;
+		let host = raw_url.host().ok_or_else(|| "Valid host, because only data:, mailto: protocols does not have host.".to_owned())?.to_owned();
+		let path = raw_url.path_segments().ok_or_else(|| "Valid path segments. In HTTP we won't get cannot-be-a-base URLs".to_owned())?
 					.map(|part| part.to_owned()).collect();
+		let query = raw_url.query().map(|x| x.to_owned());
 
 		Ok(Url {
 			port: port,
 			host: host,
 			path: path,
+			query: query,
 			raw: raw_url,
 			username: username,
 			password: password,

dapps/src/web.rs

@@ -0,0 +1,222 @@
+// 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/>.
+
+//! Serving web-based content (proxying)
+
+use std::sync::Arc;
+use fetch::{self, Fetch};
+use parity_reactor::Remote;
+
+use hyper::{self, server, net, Next, Encoder, Decoder};
+use hyper::status::StatusCode;
+
+use apps;
+use endpoint::{Endpoint, Handler, EndpointPath};
+use handlers::{
+	ContentFetcherHandler, ContentHandler, ContentValidator, ValidatorResponse,
+	StreamingHandler, Redirection, extract_url,
+};
+use url::Url;
+use WebProxyTokens;
+
+pub type Embeddable = Option<(String, u16)>;
+
+pub struct Web<F> {
+	embeddable_on: Embeddable,
+	web_proxy_tokens: Arc<WebProxyTokens>,
+	remote: Remote,
+	fetch: F,
+}
+
+impl<F: Fetch> Web<F> {
+	pub fn boxed(embeddable_on: Embeddable, web_proxy_tokens: Arc<WebProxyTokens>, remote: Remote, fetch: F) -> Box<Endpoint> {
+		Box::new(Web {
+			embeddable_on: embeddable_on,
+			web_proxy_tokens: web_proxy_tokens,
+			remote: remote,
+			fetch: fetch,
+		})
+	}
+}
+
+impl<F: Fetch> Endpoint for Web<F> {
+	fn to_async_handler(&self, path: EndpointPath, control: hyper::Control) -> Box<Handler> {
+		Box::new(WebHandler {
+			control: control,
+			state: State::Initial,
+			path: path,
+			remote: self.remote.clone(),
+			fetch: self.fetch.clone(),
+			web_proxy_tokens: self.web_proxy_tokens.clone(),
+			embeddable_on: self.embeddable_on.clone(),
+		})
+	}
+}
+
+struct WebInstaller {
+	embeddable_on: Embeddable,
+}
+
+impl ContentValidator for WebInstaller {
+	type Error = String;
+
+	fn validate_and_install(&self, response: fetch::Response) -> Result<ValidatorResponse, String> {
+		let status = StatusCode::from_u16(response.status().to_u16());
+		let is_html = response.is_html();
+		let mime = response.content_type().unwrap_or(mime!(Text/Html));
+		let mut handler = StreamingHandler::new(
+			response,
+			status,
+			mime,
+			self.embeddable_on.clone(),
+		);
+		if is_html {
+			handler.set_initial_content(&format!(r#"<script src="/{}/inject.js"></script>"#, apps::UTILS_PATH));
+		}
+		Ok(ValidatorResponse::Streaming(handler))
+	}
+}
+
+enum State<F: Fetch> {
+	Initial,
+	Error(ContentHandler),
+	Redirecting(Redirection),
+	Fetching(ContentFetcherHandler<WebInstaller, F>),
+}
+
+struct WebHandler<F: Fetch> {
+	control: hyper::Control,
+	state: State<F>,
+	path: EndpointPath,
+	remote: Remote,
+	fetch: F,
+	web_proxy_tokens: Arc<WebProxyTokens>,
+	embeddable_on: Embeddable,
+}
+
+impl<F: Fetch> WebHandler<F> {
+	fn extract_target_url(&self, url: Option<Url>) -> Result<String, State<F>> {
+		let (path, query) = match url {
+			Some(url) => (url.path, url.query),
+			None => {
+				return Err(State::Error(ContentHandler::error(
+					StatusCode::BadRequest, "Invalid URL", "Couldn't parse URL", None, self.embeddable_on.clone()
+				)));
+			}
+		};
+
+		// Support domain based routing.
+		let idx = match path.get(0).map(|m| m.as_ref()) {
+			Some(apps::WEB_PATH) => 1,
+			_ => 0,
+		};
+
+		// Check if token supplied in URL is correct.
+		match path.get(idx) {
+			Some(ref token) if self.web_proxy_tokens.is_web_proxy_token_valid(token) => {},
+			_ => {
+				return Err(State::Error(ContentHandler::error(
+					StatusCode::BadRequest, "Invalid Access Token", "Invalid or old web proxy access token supplied.", Some("Try refreshing the page."), self.embeddable_on.clone()
+				)));
+			}
+		}
+
+		// Validate protocol
+		let protocol = match path.get(idx + 1).map(|a| a.as_str()) {
+			Some("http") => "http",
+			Some("https") => "https",
+			_ => {
+				return Err(State::Error(ContentHandler::error(
+					StatusCode::BadRequest, "Invalid Protocol", "Invalid protocol used.", None, self.embeddable_on.clone()
+				)));
+			}
+		};
+
+		// Redirect if address to main page does not end with /
+		if let None = path.get(idx + 3) {
+			return Err(State::Redirecting(
+				Redirection::new(&format!("/{}/", path.join("/")))
+			));
+		}
+
+		let query = match query {
+			Some(query) => format!("?{}", query),
+			None => "".into(),
+		};
+
+		Ok(format!("{}://{}{}", protocol, path[idx + 2..].join("/"), query))
+	}
+}
+
+impl<F: Fetch> server::Handler<net::HttpStream> for WebHandler<F> {
+	fn on_request(&mut self, request: server::Request<net::HttpStream>) -> Next {
+		let url = extract_url(&request);
+
+		// First extract the URL (reject invalid URLs)
+		let target_url = match self.extract_target_url(url) {
+			Ok(url) => url,
+			Err(error) => {
+				self.state = error;
+				return Next::write();
+			}
+		};
+
+		let mut handler = ContentFetcherHandler::new(
+			target_url,
+			self.path.clone(),
+			self.control.clone(),
+			WebInstaller {
+				embeddable_on: self.embeddable_on.clone(),
+			},
+			self.embeddable_on.clone(),
+			self.remote.clone(),
+			self.fetch.clone(),
+		);
+		let res = handler.on_request(request);
+		self.state = State::Fetching(handler);
+
+		res
+	}
+
+	fn on_request_readable(&mut self, decoder: &mut Decoder<net::HttpStream>) -> Next {
+		match self.state {
+			State::Initial => Next::end(),
+			State::Error(ref mut handler) => handler.on_request_readable(decoder),
+			State::Redirecting(ref mut handler) => handler.on_request_readable(decoder),
+			State::Fetching(ref mut handler) => handler.on_request_readable(decoder),
+		}
+	}
+
+	fn on_response(&mut self, res: &mut server::Response) -> Next {
+		match self.state {
+			State::Initial => Next::end(),
+			State::Error(ref mut handler) => handler.on_response(res),
+			State::Redirecting(ref mut handler) => handler.on_response(res),
+			State::Fetching(ref mut handler) => handler.on_response(res),
+		}
+	}
+
+	fn on_response_writable(&mut self, encoder: &mut Encoder<net::HttpStream>) -> Next {
+		match self.state {
+			State::Initial => Next::end(),
+			State::Error(ref mut handler) => handler.on_response_writable(encoder),
+			State::Redirecting(ref mut handler) => handler.on_response_writable(encoder),
+			State::Fetching(ref mut handler) => handler.on_response_writable(encoder),
+		}
+	}
+}
+
+

dapps/ui/Cargo.toml

@@ -1,17 +1,17 @@
 [package]
 description = "Ethcore Parity UI"
-homepage = "http://ethcore.io"
+homepage = "http://parity.io"
 license = "GPL-3.0"
 name = "parity-ui"
-version = "1.4.0"
-authors = ["Ethcore <admin@ethcore.io>"]
+version = "1.5.0"
+authors = ["Parity Technologies <admin@parity.io>"]
 
 [build-dependencies]
 rustc_version = "0.1"
 
 [dependencies]
 parity-ui-dev = { path = "../../js", optional = true }
-parity-ui-precompiled = { git = "https://github.com/ethcore/js-precompiled.git", optional = true, branch = "beta" }
+parity-ui-precompiled = { git = "https://github.com/ethcore/js-precompiled.git", optional = true }
 
 [features]
 no-precompiled-js = ["parity-ui-dev"]

dapps/ui/src/lib.rs

@@ -1,4 +1,4 @@
-// Copyright 2015, 2016 Ethcore (UK) Ltd.
+// Copyright 2015, 2016 Parity Technologies (UK) Ltd.
 // This file is part of Parity.
 
 // Parity is free software: you can redistribute it and/or modify

db/Cargo.toml

@@ -1,21 +1,21 @@
 [package]
 description = "Ethcore Database"
-homepage = "http://ethcore.io"
+homepage = "http://parity.io"
 license = "GPL-3.0"
 name = "ethcore-db"
-version = "1.4.0"
-authors = ["Ethcore <admin@ethcore.io>"]
+version = "1.5.0"
+authors = ["Parity Technologies <admin@parity.io>"]
 build = "build.rs"
 
 [build-dependencies]
 ethcore-ipc-codegen = { path = "../ipc/codegen" }
 
 [dependencies]
-clippy = { version = "0.0.96", optional = true}
+clippy = { version = "0.0.103", optional = true}
 ethcore-devtools = { path = "../devtools" }
 ethcore-ipc = { path = "../ipc/rpc" }
 rocksdb = { git = "https://github.com/ethcore/rust-rocksdb" }
-semver = "0.2"
+semver = "0.5"
 ethcore-ipc-nano = { path = "../ipc/nano" }
 nanomsg = { git = "https://github.com/ethcore/nanomsg.rs.git" }
 crossbeam = "0.2"

db/build.rs

@@ -1,4 +1,4 @@
-// Copyright 2015, 2016 Ethcore (UK) Ltd.
+// Copyright 2015, 2016 Parity Technologies (UK) Ltd.
 // This file is part of Parity.
 
 // Parity is free software: you can redistribute it and/or modify

db/src/database.rs

@@ -1,4 +1,4 @@
-// Copyright 2015, 2016 Ethcore (UK) Ltd.
+// Copyright 2015, 2016 Parity Technologies (UK) Ltd.
 // This file is part of Parity.
 
 // Parity is free software: you can redistribute it and/or modify
@@ -73,10 +73,10 @@ impl WriteCache {
 
 				match *cache_entry {
 					WriteCacheEntry::Write(ref val) => {
-						try!(batch.put(&key, val));
+						batch.put(&key, val)?;
 					},
 					WriteCacheEntry::Remove => {
-						try!(batch.delete(&key));
+						batch.delete(&key)?;
 					},
 				}
 				key.clone()
@@ -87,14 +87,14 @@ impl WriteCache {
 			removed_so_far = removed_so_far + 1;
 		}
 		if removed_so_far > 0 {
-			try!(db.write(batch));
+			db.write(batch)?;
 		}
 		Ok(())
 	}
 
 	/// flushes until cache is empty
 	fn flush_all(&mut self, db: &DB) -> Result<(), Error> {
-		while !self.is_empty() { try!(self.flush(db, FLUSH_BATCH_SIZE)); }
+		while !self.is_empty() { self.flush(db, FLUSH_BATCH_SIZE)?; }
 		Ok(())
 	}
 
@@ -104,7 +104,7 @@ impl WriteCache {
 
 	fn try_shrink(&mut self, db: &DB) -> Result<(), Error> {
 		if self.entries.len() > self.preferred_len {
-			try!(self.flush(db, FLUSH_BATCH_SIZE));
+			self.flush(db, FLUSH_BATCH_SIZE)?;
 		}
 		Ok(())
 	}
@@ -135,7 +135,7 @@ impl Database {
 		if db_lock.is_none() { return Ok(()); }
 		let db = db_lock.as_ref().unwrap();
 
-		try!(cache_lock.try_shrink(&db));
+		cache_lock.try_shrink(&db)?;
 		Ok(())
 	}
 
@@ -145,7 +145,7 @@ impl Database {
 		if db_lock.is_none() { return Ok(()); }
 		let db = db_lock.as_ref().expect("we should have exited with Ok(()) on the previous step");
 
-		try!(cache_lock.flush_all(&db));
+		cache_lock.flush_all(&db)?;
 		Ok(())
 
 	}
@@ -174,7 +174,7 @@ impl DatabaseService for Database {
 			opts.set_block_based_table_factory(&block_opts);
 			opts.set_prefix_extractor_fixed_size(size);
 		}
-		*db = Some(try!(DB::open(&opts, &path)));
+		*db = Some(DB::open(&opts, &path)?);
 
 		Ok(())
 	}
@@ -185,7 +185,7 @@ impl DatabaseService for Database {
 	}
 
 	fn close(&self) -> Result<(), Error> {
-		try!(self.flush_all());
+		self.flush_all()?;
 
 		let mut db = self.db.write();
 		if db.is_none() { return Err(Error::IsClosed); }
@@ -231,9 +231,9 @@ impl DatabaseService for Database {
 			}
 		}
 		let db_lock = self.db.read();
-		let db = try!(db_lock.as_ref().ok_or(Error::IsClosed));
+		let db = db_lock.as_ref().ok_or(Error::IsClosed)?;
 
-		match try!(db.get(key)) {
+		match db.get(key)? {
 			Some(db_vec) => {
 				Ok(Some(db_vec.to_vec()))
 			},
@@ -243,7 +243,7 @@ impl DatabaseService for Database {
 
 	fn get_by_prefix(&self, prefix: &[u8]) -> Result<Option<Vec<u8>>, Error> {
 		let db_lock = self.db.read();
-		let db = try!(db_lock.as_ref().ok_or(Error::IsClosed));
+		let db = db_lock.as_ref().ok_or(Error::IsClosed)?;
 
 		let mut iter = db.iterator(IteratorMode::From(prefix, Direction::Forward));
 		match iter.next() {
@@ -255,14 +255,14 @@ impl DatabaseService for Database {
 
 	fn is_empty(&self) -> Result<bool, Error> {
 		let db_lock = self.db.read();
-		let db = try!(db_lock.as_ref().ok_or(Error::IsClosed));
+		let db = db_lock.as_ref().ok_or(Error::IsClosed)?;
 
 		Ok(db.iterator(IteratorMode::Start).next().is_none())
 	}
 
 	fn iter(&self) -> Result<IteratorHandle, Error> {
 		let db_lock = self.db.read();
-		let db = try!(db_lock.as_ref().ok_or(Error::IsClosed));
+		let db = db_lock.as_ref().ok_or(Error::IsClosed)?;
 
 		let mut iterators = self.iterators.write();
 		let next_iterator = iterators.keys().last().unwrap_or(&0) + 1;
@@ -270,8 +270,7 @@ impl DatabaseService for Database {
 		Ok(next_iterator)
 	}
 
-	fn iter_next(&self, handle: IteratorHandle) -> Option<KeyValue>
-	{
+	fn iter_next(&self, handle: IteratorHandle) -> Option<KeyValue> {
 		let mut iterators = self.iterators.write();
 		let mut iterator = match iterators.get_mut(&handle) {
 			Some(some_iterator) => some_iterator,

db/src/lib.rs

@@ -1,4 +1,4 @@
-// Copyright 2015, 2016 Ethcore (UK) Ltd.
+// Copyright 2015, 2016 Parity Technologies (UK) Ltd.
 // This file is part of Parity.
 
 // Parity is free software: you can redistribute it and/or modify

db/src/lib.rs.in

@@ -1,4 +1,4 @@
-// Copyright 2015, 2016 Ethcore (UK) Ltd.
+// Copyright 2015, 2016 Parity Technologies (UK) Ltd.
 // This file is part of Parity.
 
 // Parity is free software: you can redistribute it and/or modify
@@ -52,27 +52,27 @@ impl std::convert::From<nanoipc::SocketError> for ServiceError {
 
 pub fn blocks_service_url(db_path: &str) -> Result<String, std::io::Error> {
 	let mut path = PathBuf::from(db_path);
-	try!(::std::fs::create_dir_all(db_path));
+	::std::fs::create_dir_all(db_path)?;
 	path.push("blocks.ipc");
 	Ok(format!("ipc://{}", path.to_str().unwrap()))
 }
 
 pub fn extras_service_url(db_path: &str) -> Result<String, ::std::io::Error> {
 	let mut path = PathBuf::from(db_path);
-	try!(::std::fs::create_dir_all(db_path));
+	::std::fs::create_dir_all(db_path)?;
 	path.push("extras.ipc");
 	Ok(format!("ipc://{}", path.to_str().unwrap()))
 }
 
 pub fn blocks_client(db_path: &str) -> Result<DatabaseConnection, ServiceError> {
-	let url = try!(blocks_service_url(db_path));
-	let client = try!(nanoipc::generic_client::<DatabaseClient<_>>(&url));
+	let url = blocks_service_url(db_path)?;
+	let client = nanoipc::generic_client::<DatabaseClient<_>>(&url)?;
 	Ok(client)
 }
 
 pub fn extras_client(db_path: &str) -> Result<DatabaseConnection, ServiceError> {
-	let url = try!(extras_service_url(db_path));
-	let client = try!(nanoipc::generic_client::<DatabaseClient<_>>(&url));
+	let url = extras_service_url(db_path)?;
+	let client = nanoipc::generic_client::<DatabaseClient<_>>(&url)?;
 	Ok(client)
 }
 

db/src/traits.rs

@@ -1,4 +1,4 @@
-// Copyright 2015, 2016 Ethcore (UK) Ltd.
+// Copyright 2015, 2016 Parity Technologies (UK) Ltd.
 // This file is part of Parity.
 
 // Parity is free software: you can redistribute it and/or modify

deb/DEBIAN/compat

@@ -1 +0,0 @@
-8

deb/DEBIAN/control

@@ -1,13 +0,0 @@
-Package: parity
-Version: 1.4.0
-Source: parity
-Section: science
-Priority: extra
-Maintainer: Ethcore <devops@ethcore.io>
-Build-Depends: debhelper (>=9)
-Standards-Version: 3.9.5
-Homepage: https://ethcore.io
-Vcs-Git: git://github.com/ethcore/parity.git
-Vcs-Browser: https://github.com/ethcore/parity
-Architecture: armhf
-Description: Ethereum network client by Ethcore

deb/DEBIAN/copyright

@@ -1,675 +0,0 @@
-                    GNU GENERAL PUBLIC LICENSE
-                       Version 3, 29 June 2007
-
- Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
- Everyone is permitted to copy and distribute verbatim copies
- of this license document, but changing it is not allowed.
-
-                            Preamble
-
-  The GNU General Public License is a free, copyleft license for
-software and other kinds of works.
-
-  The licenses for most software and other practical works are designed
-to take away your freedom to share and change the works.  By contrast,
-the GNU General Public License is intended to guarantee your freedom to
-share and change all versions of a program--to make sure it remains free
-software for all its users.  We, the Free Software Foundation, use the
-GNU General Public License for most of our software; it applies also to
-any other work released this way by its authors.  You can apply it to
-your programs, too.
-
-  When we speak of free software, we are referring to freedom, not
-price.  Our General Public Licenses are designed to make sure that you
-have the freedom to distribute copies of free software (and charge for
-them if you wish), that you receive source code or can get it if you
-want it, that you can change the software or use pieces of it in new
-free programs, and that you know you can do these things.
-
-  To protect your rights, we need to prevent others from denying you
-these rights or asking you to surrender the rights.  Therefore, you have
-certain responsibilities if you distribute copies of the software, or if
-you modify it: responsibilities to respect the freedom of others.
-
-  For example, if you distribute copies of such a program, whether
-gratis or for a fee, you must pass on to the recipients the same
-freedoms that you received.  You must make sure that they, too, receive
-or can get the source code.  And you must show them these terms so they
-know their rights.
-
-  Developers that use the GNU GPL protect your rights with two steps:
-(1) assert copyright on the software, and (2) offer you this License
-giving you legal permission to copy, distribute and/or modify it.
-
-  For the developers' and authors' protection, the GPL clearly explains
-that there is no warranty for this free software.  For both users' and
-authors' sake, the GPL requires that modified versions be marked as
-changed, so that their problems will not be attributed erroneously to
-authors of previous versions.
-
-  Some devices are designed to deny users access to install or run
-modified versions of the software inside them, although the manufacturer
-can do so.  This is fundamentally incompatible with the aim of
-protecting users' freedom to change the software.  The systematic
-pattern of such abuse occurs in the area of products for individuals to
-use, which is precisely where it is most unacceptable.  Therefore, we
-have designed this version of the GPL to prohibit the practice for those
-products.  If such problems arise substantially in other domains, we
-stand ready to extend this provision to those domains in future versions
-of the GPL, as needed to protect the freedom of users.
-
-  Finally, every program is threatened constantly by software patents.
-States should not allow patents to restrict development and use of
-software on general-purpose computers, but in those that do, we wish to
-avoid the special danger that patents applied to a free program could
-make it effectively proprietary.  To prevent this, the GPL assures that
-patents cannot be used to render the program non-free.
-
-  The precise terms and conditions for copying, distribution and
-modification follow.
-
-                       TERMS AND CONDITIONS
-
-  0. Definitions.
-
-  "This License" refers to version 3 of the GNU General Public License.
-
-  "Copyright" also means copyright-like laws that apply to other kinds of
-works, such as semiconductor masks.
-
-  "The Program" refers to any copyrightable work licensed under this
-License.  Each licensee is addressed as "you".  "Licensees" and
-"recipients" may be individuals or organizations.
-
-  To "modify" a work means to copy from or adapt all or part of the work
-in a fashion requiring copyright permission, other than the making of an
-exact copy.  The resulting work is called a "modified version" of the
-earlier work or a work "based on" the earlier work.
-
-  A "covered work" means either the unmodified Program or a work based
-on the Program.
-
-  To "propagate" a work means to do anything with it that, without
-permission, would make you directly or secondarily liable for
-infringement under applicable copyright law, except executing it on a
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-  To "convey" a work means any kind of propagation that enables other
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-a computer network, with no transfer of a copy, is not conveying.
-
-  An interactive user interface displays "Appropriate Legal Notices"
-to the extent that it includes a convenient and prominently visible
-feature that (1) displays an appropriate copyright notice, and (2)
-tells the user that there is no warranty for the work (except to the
-extent that warranties are provided), that licensees may convey the
-work under this License, and how to view a copy of this License.  If
-the interface presents a list of user commands or options, such as a
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-same work.
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-copyright on the Program, and are irrevocable provided the stated
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deb/DEBIAN/docs

@@ -1 +0,0 @@
-https://github.com/ethcore/parity/wiki

deb/usr/bin/parity.REMOVED.git-id

@@ -1 +0,0 @@
-d3a6fd5582dd14ad718b2eb1a0662c3e817a63cf

devtools/Cargo.toml

@@ -1,10 +1,10 @@
 [package]
 description = "Ethcore development/test/build tools"
-homepage = "http://ethcore.io"
+homepage = "http://parity.io"
 license = "GPL-3.0"
 name = "ethcore-devtools"
-version = "1.4.0"
-authors = ["Ethcore <admin@ethcore.io>"]
+version = "1.5.0"
+authors = ["Parity Technologies <admin@parity.io>"]
 
 [dependencies]
 rand = "0.3"

devtools/src/http_client.rs

@@ -1,4 +1,4 @@
-// Copyright 2015, 2016 Ethcore (UK) Ltd.
+// Copyright 2015, 2016 Parity Technologies (UK) Ltd.
 // This file is part of Parity.
 
 // Parity is free software: you can redistribute it and/or modify
@@ -27,6 +27,21 @@ pub struct Response {
 	pub body: String,
 }
 
+impl Response {
+	pub fn assert_header(&self, header: &str, value: &str) {
+		let header = format!("{}: {}", header, value);
+		assert!(self.headers.iter().find(|h| *h == &header).is_some(), "Couldn't find header {} in {:?}", header, &self.headers)
+	}
+
+	pub fn assert_status(&self, status: &str) {
+		assert_eq!(self.status, status.to_owned(), "Got unexpected code. Body: {:?}", self.body);
+	}
+
+	pub fn assert_security_headers_present(&self, port: Option<u16>) {
+		assert_security_headers_present(&self.headers, port)
+	}
+}
+
 pub fn read_block(lines: &mut Lines, all: bool) -> String {
 	let mut block = String::new();
 	loop {
@@ -65,7 +80,7 @@ fn connect(address: &SocketAddr) -> TcpStream {
 
 pub fn request(address: &SocketAddr, request: &str) -> Response {
 	let mut req = connect(address);
-	req.set_read_timeout(Some(Duration::from_secs(1))).unwrap();
+	req.set_read_timeout(Some(Duration::from_secs(2))).unwrap();
 	req.write_all(request.as_bytes()).unwrap();
 
 	let mut response = String::new();

devtools/src/lib.rs

@@ -1,4 +1,4 @@
-// Copyright 2015, 2016 Ethcore (UK) Ltd.
+// Copyright 2015, 2016 Parity Technologies (UK) Ltd.
 // This file is part of Parity.
 
 // Parity is free software: you can redistribute it and/or modify

devtools/src/random_path.rs

@@ -1,4 +1,4 @@
-// Copyright 2015, 2016 Ethcore (UK) Ltd.
+// Copyright 2015, 2016 Parity Technologies (UK) Ltd.
 // This file is part of Parity.
 
 // Parity is free software: you can redistribute it and/or modify

devtools/src/stop_guard.rs

@@ -1,4 +1,4 @@
-// Copyright 2015, 2016 Ethcore (UK) Ltd.
+// Copyright 2015, 2016 Parity Technologies (UK) Ltd.
 // This file is part of Parity.
 
 // Parity is free software: you can redistribute it and/or modify

devtools/src/test_socket.rs

@@ -1,4 +1,4 @@
-// Copyright 2015, 2016 Ethcore (UK) Ltd.
+// Copyright 2015, 2016 Parity Technologies (UK) Ltd.
 // This file is part of Parity.
 
 // Parity is free software: you can redistribute it and/or modify

docker/ubuntu-stable/Dockerfile

@@ -3,12 +3,12 @@ WORKDIR /build
 # install tools and dependencies
 RUN apt-get update && \
         apt-get install -y \
+        build-essential \
         g++ \
         curl \
         git \
         file \
-        binutils \
-	make
+        binutils
 
 # install rustup
 RUN curl https://sh.rustup.rs -sSf | sh -s -- -y

docker/ubuntu/Dockerfile

@@ -4,11 +4,11 @@ WORKDIR /build
 RUN apt-get update && \
         apt-get install -y \
         g++ \
+        build-essential \
         curl \
         git \
         file \
-        binutils \
-	make
+        binutils
 
 # install rustup
 RUN curl https://sh.rustup.rs -sSf | sh -s -- -y

ethash/Cargo.toml

@@ -1,7 +1,7 @@
 [package]
 name = "ethash"
-version = "1.4.0"
-authors = ["arkpar <arkadiy@ethcore.io"]
+version = "1.5.0"
+authors = ["Parity Technologies <admin@parity.io>"]
 
 [lib]
 

ethash/src/compute.rs

@@ -1,4 +1,4 @@
-// Copyright 2015, 2016 Ethcore (UK) Ltd.
+// Copyright 2015, 2016 Parity Technologies (UK) Ltd.
 // This file is part of Parity.
 
 // Parity is free software: you can redistribute it and/or modify
@@ -116,17 +116,17 @@ impl Light {
 	pub fn from_file(block_number: u64) -> io::Result<Light> {
 		let seed_compute = SeedHashCompute::new();
 		let path = Light::file_path(seed_compute.get_seedhash(block_number));
-		let mut file = try!(File::open(path));
+		let mut file = File::open(path)?;
 
 		let cache_size = get_cache_size(block_number);
-		if try!(file.metadata()).len() != cache_size as u64 {
+		if file.metadata()?.len() != cache_size as u64 {
 			return Err(io::Error::new(io::ErrorKind::Other, "Cache file size mismatch"));
 		}
 		let num_nodes = cache_size / NODE_BYTES;
 		let mut nodes: Vec<Node> = Vec::new();
 		nodes.resize(num_nodes, unsafe { mem::uninitialized() });
 		let buf = unsafe { slice::from_raw_parts_mut(nodes.as_mut_ptr() as *mut u8, cache_size) };
-		try!(file.read_exact(buf));
+		file.read_exact(buf)?;
 		Ok(Light {
 			cache: nodes,
 			block_number: block_number,
@@ -144,16 +144,16 @@ impl Light {
 
 			if deprecated.exists() {
 				debug!(target: "ethash", "removing: {:?}", &deprecated);
-				try!(fs::remove_file(deprecated));
+				fs::remove_file(deprecated)?;
 			}
 		}
 
-		try!(fs::create_dir_all(path.parent().unwrap()));
-		let mut file = try!(File::create(&path));
+		fs::create_dir_all(path.parent().unwrap())?;
+		let mut file = File::create(&path)?;
 
 		let cache_size = self.cache.len() * NODE_BYTES;
 		let buf = unsafe { slice::from_raw_parts(self.cache.as_ptr() as *const u8, cache_size) };
-		try!(file.write(buf));
+		file.write(buf)?;
 		Ok(path)
 	}
 }

ethash/src/lib.rs

@@ -1,4 +1,4 @@
-// Copyright 2015, 2016 Ethcore (UK) Ltd.
+// Copyright 2015, 2016 Parity Technologies (UK) Ltd.
 // This file is part of Parity.
 
 // Parity is free software: you can redistribute it and/or modify

ethcore/Cargo.toml

@@ -1,10 +1,10 @@
 [package]
 description = "Ethcore library"
-homepage = "http://ethcore.io"
+homepage = "http://parity.io"
 license = "GPL-3.0"
 name = "ethcore"
-version = "1.4.0"
-authors = ["Ethcore <admin@ethcore.io>"]
+version = "1.5.0"
+authors = ["Parity Technologies <admin@parity.io>"]
 build = "build.rs"
 
 [build-dependencies]
@@ -21,14 +21,15 @@ crossbeam = "0.2.9"
 lazy_static = "0.2"
 bloomchain = "0.1"
 rayon = "0.4.2"
-semver = "0.2"
+semver = "0.5"
 bit-set = "0.4"
 time = "0.1"
 rand = "0.3"
 byteorder = "0.5"
 transient-hashmap = "0.1"
+linked-hash-map = "0.3.0"
 evmjit = { path = "../evmjit", optional = true }
-clippy = { version = "0.0.96", optional = true}
+clippy = { version = "0.0.103", optional = true}
 ethash = { path = "../ethash" }
 ethcore-util = { path = "../util" }
 ethcore-io = { path = "../util/io" }
@@ -41,6 +42,7 @@ ethcore-ipc-nano = { path = "../ipc/nano" }
 rlp = { path = "../util/rlp" }
 lru-cache = "0.1.0"
 ethcore-bloom-journal = { path = "../util/bloom" }
+ethabi = "0.2.2"
 
 [dependencies.hyper]
 git = "https://github.com/ethcore/hyper"

ethcore/build.rs

@@ -1,4 +1,4 @@
-// Copyright 2015, 2016 Ethcore (UK) Ltd.
+// Copyright 2015, 2016 Parity Technologies (UK) Ltd.
 // This file is part of Parity.
 
 // Parity is free software: you can redistribute it and/or modify

ethcore/light/Cargo.toml

@@ -0,0 +1,26 @@
+[package]
+description = "Parity LES primitives"
+homepage = "http://parity.io"
+license = "GPL-3.0"
+name = "ethcore-light"
+version = "1.5.0"
+authors = ["Parity Technologies <admin@parity.io>"]
+build = "build.rs"
+
+[build-dependencies]
+"ethcore-ipc-codegen" = { path = "../../ipc/codegen", optional = true }
+
+[dependencies]
+log = "0.3"
+ethcore = { path = ".."}
+ethcore-util = { path = "../../util" }
+ethcore-network = { path = "../../util/network" }
+ethcore-io = { path = "../../util/io" }
+ethcore-ipc = { path = "../../ipc/rpc", optional = true }
+rlp = { path = "../../util/rlp" }
+time = "0.1"
+smallvec = "0.3.1"
+
+[features]
+default = []
+ipc = ["ethcore-ipc", "ethcore-ipc-codegen"]

ethcore/light/build.rs

@@ -0,0 +1,27 @@
+// 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/>.
+
+#[cfg(feature = "ipc")]
+extern crate ethcore_ipc_codegen;
+
+#[cfg(feature = "ipc")]
+fn main() {
+	ethcore_ipc_codegen::derive_binary("src/types/mod.rs.in").unwrap();
+	ethcore_ipc_codegen::derive_ipc_cond("src/provider.rs", true).unwrap();
+}
+
+#[cfg(not(feature = "ipc"))]
+fn main() { }

ethcore/light/src/client/cht.rs

@@ -0,0 +1,22 @@
+// 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.
+
+//! Canonical hash trie definitions and helper functions.
+
+/// The size of each CHT.
+pub const SIZE: u64 = 2048;
+
+/// Convert a block number to a CHT number.
+pub fn block_to_cht_number(block_num: u64) -> u64 {
+	(block_num + 1) / SIZE
+}

ethcore/light/src/client/header_chain.rs

@@ -0,0 +1,365 @@
+// 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/>.
+
+//! Light client header chain.
+//!
+//! Unlike a full node's `BlockChain` this doesn't store much in the database.
+//! It stores candidates for the last 2048-4096 blocks as well as CHT roots for
+//! historical blocks all the way to the genesis.
+//!
+//! This is separate from the `BlockChain` for two reasons:
+//!   - It stores only headers (and a pruned subset of them)
+//!   - To allow for flexibility in the database layout once that's incorporated.
+// TODO: use DB instead of memory. DB Layout: just the contents of `candidates`/`headers`
+//
+
+use std::collections::{BTreeMap, HashMap};
+
+use client::cht;
+
+use ethcore::block_status::BlockStatus;
+use ethcore::error::BlockError;
+use ethcore::ids::BlockId;
+use ethcore::views::HeaderView;
+use util::{Bytes, H256, U256, HeapSizeOf, Mutex, RwLock};
+
+use smallvec::SmallVec;
+
+/// Store at least this many candidate headers at all times.
+/// Also functions as the delay for computing CHTs as they aren't
+/// relevant to any blocks we've got in memory.
+const HISTORY: u64 = 2048;
+
+/// Information about a block.
+#[derive(Debug, Clone)]
+pub struct BlockDescriptor {
+	/// The block's hash
+	pub hash: H256,
+	/// The block's number
+	pub number: u64,
+	/// The block's total difficulty.
+	pub total_difficulty: U256,
+}
+
+// candidate block description.
+struct Candidate {
+	hash: H256,
+	parent_hash: H256,
+	total_difficulty: U256,
+}
+
+struct Entry {
+	candidates: SmallVec<[Candidate; 3]>, // 3 arbitrarily chosen
+	canonical_hash: H256,
+}
+
+impl HeapSizeOf for Entry {
+	fn heap_size_of_children(&self) -> usize {
+		match self.candidates.spilled() {
+			false => 0,
+			true => self.candidates.capacity() * ::std::mem::size_of::<Candidate>(),
+		}
+	}
+}
+
+/// Header chain. See module docs for more details.
+pub struct HeaderChain {
+	genesis_header: Bytes, // special-case the genesis.
+	candidates: RwLock<BTreeMap<u64, Entry>>,
+	headers: RwLock<HashMap<H256, Bytes>>,
+	best_block: RwLock<BlockDescriptor>,
+	cht_roots: Mutex<Vec<H256>>,
+}
+
+impl HeaderChain {
+	/// Create a new header chain given this genesis block.
+	pub fn new(genesis: &[u8]) -> Self {
+		let g_view = HeaderView::new(genesis);
+
+		HeaderChain {
+			genesis_header: genesis.to_owned(),
+			best_block: RwLock::new(BlockDescriptor {
+				hash: g_view.hash(),
+				number: 0,
+				total_difficulty: g_view.difficulty(),
+			}),
+			candidates: RwLock::new(BTreeMap::new()),
+			headers: RwLock::new(HashMap::new()),
+			cht_roots: Mutex::new(Vec::new()),
+		}
+	}
+
+	/// Insert a pre-verified header.
+	///
+	/// This blindly trusts that the data given to it is
+	/// a) valid RLP encoding of a header and
+	/// b) has sensible data contained within it.
+	pub fn insert(&self, header: Bytes) -> Result<(), BlockError> {
+		let view = HeaderView::new(&header);
+		let hash = view.hash();
+		let number = view.number();
+		let parent_hash = view.parent_hash();
+
+		// hold candidates the whole time to guard import order.
+		let mut candidates = self.candidates.write();
+
+		// find parent details.
+		let parent_td =
+			if number == 1 {
+				let g_view = HeaderView::new(&self.genesis_header);
+				g_view.difficulty()
+			} else {
+				candidates.get(&(number - 1))
+					.and_then(|entry| entry.candidates.iter().find(|c| c.hash == parent_hash))
+					.map(|c| c.total_difficulty)
+					.ok_or_else(|| BlockError::UnknownParent(parent_hash))?
+			};
+
+		let total_difficulty = parent_td + view.difficulty();
+
+		// insert headers and candidates entries.
+		candidates.entry(number).or_insert_with(|| Entry { candidates: SmallVec::new(), canonical_hash: hash})
+			.candidates.push(Candidate {
+				hash: hash,
+				parent_hash: parent_hash,
+				total_difficulty: total_difficulty,
+		});
+
+		self.headers.write().insert(hash, header.clone());
+
+		// reorganize ancestors so canonical entries are first in their
+		// respective candidates vectors.
+		if self.best_block.read().total_difficulty < total_difficulty {
+			let mut canon_hash = hash;
+			for (_, entry) in candidates.iter_mut().rev().skip_while(|&(height, _)| *height > number) {
+				if entry.canonical_hash == canon_hash { break; }
+
+				let canon = entry.candidates.iter().find(|x| x.hash == canon_hash)
+					.expect("blocks are only inserted if parent is present; or this is the block we just added; qed");
+
+				// what about reorgs > cht::SIZE + HISTORY?
+				// resetting to the last block of a given CHT should be possible.
+				canon_hash = canon.parent_hash;
+			}
+
+			*self.best_block.write() = BlockDescriptor {
+				hash: hash,
+				number: number,
+				total_difficulty: total_difficulty,
+			};
+
+			// produce next CHT root if it's time.
+			let earliest_era = *candidates.keys().next().expect("at least one era just created; qed");
+			if earliest_era + HISTORY + cht::SIZE <= number {
+				let mut values = Vec::with_capacity(cht::SIZE as usize);
+				{
+					let mut headers = self.headers.write();
+					for i in (0..cht::SIZE).map(|x| x + earliest_era) {
+						let era_entry = candidates.remove(&i)
+							.expect("all eras are sequential with no gaps; qed");
+
+						for ancient in &era_entry.candidates {
+							headers.remove(&ancient.hash);
+						}
+
+						values.push((
+							::rlp::encode(&i).to_vec(),
+							::rlp::encode(&era_entry.canonical_hash).to_vec(),
+						));
+					}
+				}
+
+				let cht_root = ::util::triehash::trie_root(values);
+				debug!(target: "chain", "Produced CHT {} root: {:?}", (earliest_era - 1) % cht::SIZE, cht_root);
+
+				self.cht_roots.lock().push(cht_root);
+			}
+		}
+
+		Ok(())
+	}
+
+	/// Get a block header. In the case of query by number, only canonical blocks
+	/// will be returned.
+	pub fn get_header(&self, id: BlockId) -> Option<Bytes> {
+		match id {
+			BlockId::Earliest | BlockId::Number(0) => Some(self.genesis_header.clone()),
+			BlockId::Hash(hash) => self.headers.read().get(&hash).map(|x| x.to_vec()),
+			BlockId::Number(num) => {
+				if self.best_block.read().number < num { return None }
+
+				self.candidates.read().get(&num).map(|entry| entry.canonical_hash)
+					.and_then(|hash| self.headers.read().get(&hash).map(|x| x.to_vec()))
+			}
+			BlockId::Latest | BlockId::Pending => {
+				let hash = self.best_block.read().hash;
+				self.headers.read().get(&hash).map(|x| x.to_vec())
+			}
+		}
+	}
+
+	/// Get the nth CHT root, if it's been computed.
+	///
+	/// CHT root 0 is from block `1..2048`.
+	/// CHT root 1 is from block `2049..4096`
+	/// and so on.
+	///
+	/// This is because it's assumed that the genesis hash is known,
+	/// so including it within a CHT would be redundant.
+	pub fn cht_root(&self, n: usize) -> Option<H256> {
+		self.cht_roots.lock().get(n).map(|h| h.clone())
+	}
+
+	/// Get the genesis hash.
+	pub fn genesis_hash(&self) -> H256 {
+		::util::Hashable::sha3(&self.genesis_header)
+	}
+
+	/// Get the best block's data.
+	pub fn best_block(&self) -> BlockDescriptor {
+		self.best_block.read().clone()
+	}
+
+	/// If there is a gap between the genesis and the rest
+	/// of the stored blocks, return the first post-gap block.
+	pub fn first_block(&self) -> Option<BlockDescriptor> {
+		let candidates = self.candidates.read();
+		match candidates.iter().next() {
+			None | Some((&1, _)) => None,
+			Some((&height, entry)) => Some(BlockDescriptor {
+				number: height,
+				hash: entry.canonical_hash,
+				total_difficulty: entry.candidates.iter().find(|x| x.hash == entry.canonical_hash)
+					.expect("entry always stores canonical candidate; qed").total_difficulty,
+			})
+		}
+	}
+
+	/// Get block status.
+	pub fn status(&self, hash: &H256) -> BlockStatus {
+		match self.headers.read().contains_key(hash) {
+			true => BlockStatus::InChain,
+			false => BlockStatus::Unknown,
+		}
+	}
+}
+
+impl HeapSizeOf for HeaderChain {
+	fn heap_size_of_children(&self) -> usize {
+		self.candidates.read().heap_size_of_children() +
+			self.headers.read().heap_size_of_children() +
+			self.cht_roots.lock().heap_size_of_children()
+	}
+}
+
+#[cfg(test)]
+mod tests {
+	use super::HeaderChain;
+	use ethcore::ids::BlockId;
+	use ethcore::header::Header;
+	use ethcore::spec::Spec;
+
+	#[test]
+	fn basic_chain() {
+		let spec = Spec::new_test();
+		let genesis_header = spec.genesis_header();
+
+		let chain = HeaderChain::new(&::rlp::encode(&genesis_header));
+
+		let mut parent_hash = genesis_header.hash();
+		let mut rolling_timestamp = genesis_header.timestamp();
+		for i in 1..10000 {
+			let mut header = Header::new();
+			header.set_parent_hash(parent_hash);
+			header.set_number(i);
+			header.set_timestamp(rolling_timestamp);
+			header.set_difficulty(*genesis_header.difficulty() * i.into());
+
+			chain.insert(::rlp::encode(&header).to_vec()).unwrap();
+
+			parent_hash = header.hash();
+			rolling_timestamp += 10;
+		}
+
+		assert!(chain.get_header(BlockId::Number(10)).is_none());
+		assert!(chain.get_header(BlockId::Number(9000)).is_some());
+		assert!(chain.cht_root(2).is_some());
+		assert!(chain.cht_root(3).is_none());
+	}
+
+	#[test]
+	fn reorganize() {
+		let spec = Spec::new_test();
+		let genesis_header = spec.genesis_header();
+
+		let chain = HeaderChain::new(&::rlp::encode(&genesis_header));
+
+		let mut parent_hash = genesis_header.hash();
+		let mut rolling_timestamp = genesis_header.timestamp();
+		for i in 1..6 {
+			let mut header = Header::new();
+			header.set_parent_hash(parent_hash);
+			header.set_number(i);
+			header.set_timestamp(rolling_timestamp);
+			header.set_difficulty(*genesis_header.difficulty() * i.into());
+
+			chain.insert(::rlp::encode(&header).to_vec()).unwrap();
+
+			parent_hash = header.hash();
+			rolling_timestamp += 10;
+		}
+
+		{
+			let mut rolling_timestamp = rolling_timestamp;
+			let mut parent_hash = parent_hash;
+			for i in 6..16 {
+				let mut header = Header::new();
+				header.set_parent_hash(parent_hash);
+				header.set_number(i);
+				header.set_timestamp(rolling_timestamp);
+				header.set_difficulty(*genesis_header.difficulty() * i.into());
+
+				chain.insert(::rlp::encode(&header).to_vec()).unwrap();
+
+				parent_hash = header.hash();
+				rolling_timestamp += 10;
+			}
+		}
+
+		assert_eq!(chain.best_block().number, 15);
+
+		{
+			let mut rolling_timestamp = rolling_timestamp;
+			let mut parent_hash = parent_hash;
+
+			// import a shorter chain which has better TD.
+			for i in 6..13 {
+				let mut header = Header::new();
+				header.set_parent_hash(parent_hash);
+				header.set_number(i);
+				header.set_timestamp(rolling_timestamp);
+				header.set_difficulty(*genesis_header.difficulty() * (i * i).into());
+
+				chain.insert(::rlp::encode(&header).to_vec()).unwrap();
+
+				parent_hash = header.hash();
+				rolling_timestamp += 11;
+			}
+		}
+
+		assert_eq!(chain.best_block().number, 12);
+	}
+}

ethcore/light/src/client/mod.rs

@@ -0,0 +1,264 @@
+// 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/>.
+
+//! Light client implementation. Stores data from light sync
+
+use ethcore::block_import_error::BlockImportError;
+use ethcore::block_status::BlockStatus;
+use ethcore::client::ClientReport;
+use ethcore::ids::BlockId;
+use ethcore::header::Header;
+use ethcore::verification::queue::{self, HeaderQueue};
+use ethcore::transaction::PendingTransaction;
+use ethcore::blockchain_info::BlockChainInfo;
+use ethcore::spec::Spec;
+use ethcore::service::ClientIoMessage;
+use ethcore::encoded;
+use io::IoChannel;
+
+use util::hash::{H256, H256FastMap};
+use util::{Bytes, Mutex, RwLock};
+
+use provider::Provider;
+use request;
+
+use self::header_chain::HeaderChain;
+
+pub use self::service::Service;
+
+pub mod cht;
+
+mod header_chain;
+mod service;
+
+/// Configuration for the light client.
+#[derive(Debug, Default, Clone)]
+pub struct Config {
+	/// Verification queue config.
+	pub queue: queue::Config,
+}
+
+/// Trait for interacting with the header chain abstractly.
+pub trait LightChainClient: Send + Sync {
+	/// Get chain info.
+	fn chain_info(&self) -> BlockChainInfo;
+
+	/// Queue header to be verified. Required that all headers queued have their
+	/// parent queued prior.
+	fn queue_header(&self, header: Header) -> Result<H256, BlockImportError>;
+
+	/// Query whether a block is known.
+	fn is_known(&self, hash: &H256) -> bool;
+
+	/// Clear the queue.
+	fn clear_queue(&self);
+
+	/// Get queue info.
+	fn queue_info(&self) -> queue::QueueInfo;
+
+	/// Get the `i`th CHT root.
+	fn cht_root(&self, i: usize) -> Option<H256>;
+}
+
+/// Light client implementation.
+pub struct Client {
+	queue: HeaderQueue,
+	chain: HeaderChain,
+	tx_pool: Mutex<H256FastMap<PendingTransaction>>,
+	report: RwLock<ClientReport>,
+	import_lock: Mutex<()>,
+}
+
+impl Client {
+	/// Create a new `Client`.
+	pub fn new(config: Config, spec: &Spec, io_channel: IoChannel<ClientIoMessage>) -> Self {
+		Client {
+			queue: HeaderQueue::new(config.queue, spec.engine.clone(), io_channel, true),
+			chain: HeaderChain::new(&::rlp::encode(&spec.genesis_header())),
+			tx_pool: Mutex::new(Default::default()),
+			report: RwLock::new(ClientReport::default()),
+			import_lock: Mutex::new(()),
+		}
+	}
+
+	/// Import a header to the queue for additional verification.
+	pub fn import_header(&self, header: Header) -> Result<H256, BlockImportError> {
+		self.queue.import(header).map_err(Into::into)
+	}
+
+	/// Import a local transaction.
+	pub fn import_own_transaction(&self, tx: PendingTransaction) {
+		self.tx_pool.lock().insert(tx.transaction.hash(), tx);
+	}
+
+	/// Fetch a vector of all pending transactions.
+	pub fn ready_transactions(&self) -> Vec<PendingTransaction> {
+		let best_num = self.chain.best_block().number;
+		self.tx_pool.lock()
+			.values()
+			.filter(|t| t.min_block.as_ref().map_or(true, |x| x <= &best_num))
+			.cloned()
+			.collect()
+	}
+
+	/// Inquire about the status of a given header.
+	pub fn status(&self, hash: &H256) -> BlockStatus {
+		match self.queue.status(hash) {
+			queue::Status::Unknown => self.chain.status(hash),
+			other => other.into(),
+		}
+	}
+
+	/// Get the chain info.
+	pub fn chain_info(&self) -> BlockChainInfo {
+		let best_block = self.chain.best_block();
+		let first_block = self.chain.first_block();
+		let genesis_hash = self.chain.genesis_hash();
+
+		BlockChainInfo {
+			total_difficulty: best_block.total_difficulty,
+			pending_total_difficulty: best_block.total_difficulty,
+			genesis_hash: genesis_hash,
+			best_block_hash: best_block.hash,
+			best_block_number: best_block.number,
+			ancient_block_hash: if first_block.is_some() { Some(genesis_hash) } else { None },
+			ancient_block_number: if first_block.is_some() { Some(0) } else { None },
+			first_block_hash: first_block.as_ref().map(|first| first.hash),
+			first_block_number: first_block.as_ref().map(|first| first.number),
+		}
+	}
+
+	/// Get the header queue info.
+	pub fn queue_info(&self) -> queue::QueueInfo {
+		self.queue.queue_info()
+	}
+
+	/// Get a block header by Id.
+	pub fn get_header(&self, id: BlockId) -> Option<Bytes> {
+		self.chain.get_header(id)
+	}
+
+	/// Get the `i`th CHT root.
+	pub fn cht_root(&self, i: usize) -> Option<H256> {
+		self.chain.cht_root(i)
+	}
+
+	/// Import a set of pre-verified headers from the queue.
+	pub fn import_verified(&self) {
+		const MAX: usize = 256;
+
+		let _lock = self.import_lock.lock();
+
+		let mut bad = Vec::new();
+		let mut good = Vec::new();
+		for verified_header in self.queue.drain(MAX) {
+			let (num, hash) = (verified_header.number(), verified_header.hash());
+
+			match self.chain.insert(::rlp::encode(&verified_header).to_vec()) {
+				Ok(()) => {
+					good.push(hash);
+					self.report.write().blocks_imported += 1;
+				}
+				Err(e) => {
+					debug!(target: "client", "Error importing header {:?}: {}", (num, hash), e);
+					bad.push(hash);
+				}
+			}
+		}
+
+		self.queue.mark_as_bad(&bad);
+		self.queue.mark_as_good(&good);
+	}
+
+	/// Get a report about blocks imported.
+	pub fn report(&self) -> ClientReport {
+		::std::mem::replace(&mut *self.report.write(), ClientReport::default())
+	}
+
+	/// Get blockchain mem usage in bytes.
+	pub fn chain_mem_used(&self) -> usize {
+		use util::HeapSizeOf;
+
+		self.chain.heap_size_of_children()
+	}
+}
+
+impl LightChainClient for Client {
+	fn chain_info(&self) -> BlockChainInfo { Client::chain_info(self) }
+
+	fn queue_header(&self, header: Header) -> Result<H256, BlockImportError> {
+		self.import_header(header)
+	}
+
+	fn is_known(&self, hash: &H256) -> bool {
+		self.status(hash) == BlockStatus::InChain
+	}
+
+	fn clear_queue(&self) {
+		self.queue.clear()
+	}
+
+	fn queue_info(&self) -> queue::QueueInfo {
+		self.queue.queue_info()
+	}
+
+	fn cht_root(&self, i: usize) -> Option<H256> {
+		Client::cht_root(self, i)
+	}
+}
+
+// dummy implementation -- may draw from canonical cache further on.
+impl Provider for Client {
+	fn chain_info(&self) -> BlockChainInfo {
+		Client::chain_info(self)
+	}
+
+	fn reorg_depth(&self, _a: &H256, _b: &H256) -> Option<u64> {
+		None
+	}
+
+	fn earliest_state(&self) -> Option<u64> {
+		None
+	}
+
+	fn block_header(&self, id: BlockId) -> Option<encoded::Header> {
+		self.chain.get_header(id).map(encoded::Header::new)
+	}
+
+	fn block_body(&self, _id: BlockId) -> Option<encoded::Body> {
+		None
+	}
+
+	fn block_receipts(&self, _hash: &H256) -> Option<Bytes> {
+		None
+	}
+
+	fn state_proof(&self, _req: request::StateProof) -> Vec<Bytes> {
+		Vec::new()
+	}
+
+	fn contract_code(&self, _req: request::ContractCode) -> Bytes {
+		Vec::new()
+	}
+
+	fn header_proof(&self, _req: request::HeaderProof) -> Option<(encoded::Header, Vec<Bytes>)> {
+		None
+	}
+
+	fn ready_transactions(&self) -> Vec<PendingTransaction> {
+		Vec::new()
+	}
+}

ethcore/light/src/client/service.rs

@@ -0,0 +1,73 @@
+// 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/>.
+
+//! Minimal IO service for light client.
+//! Just handles block import messages and passes them to the client.
+
+use std::sync::Arc;
+
+use ethcore::service::ClientIoMessage;
+use ethcore::spec::Spec;
+use io::{IoContext, IoError, IoHandler, IoService};
+
+use super::{Client, Config as ClientConfig};
+
+/// Light client service.
+pub struct Service {
+	client: Arc<Client>,
+	_io_service: IoService<ClientIoMessage>,
+}
+
+impl Service {
+	/// Start the service: initialize I/O workers and client itself.
+	pub fn start(config: ClientConfig, spec: &Spec) -> Result<Self, IoError> {
+		let io_service = try!(IoService::<ClientIoMessage>::start());
+		let client = Arc::new(Client::new(config, spec, io_service.channel()));
+		try!(io_service.register_handler(Arc::new(ImportBlocks(client.clone()))));
+
+		Ok(Service {
+			client: client,
+			_io_service: io_service,
+		})
+	}
+
+	/// Get a handle to the client.
+	pub fn client(&self) -> &Arc<Client> {
+		&self.client
+	}
+}
+
+struct ImportBlocks(Arc<Client>);
+
+impl IoHandler<ClientIoMessage> for ImportBlocks {
+	fn message(&self, _io: &IoContext<ClientIoMessage>, message: &ClientIoMessage) {
+		if let ClientIoMessage::BlockVerified = *message {
+			self.0.import_verified();
+		}
+	}
+}
+
+#[cfg(test)]
+mod tests {
+	use super::Service;
+	use ethcore::spec::Spec;
+
+	#[test]
+	fn it_works() {
+		let spec = Spec::new_test();
+		Service::start(Default::default(), &spec).unwrap();
+	}
+}

ethcore/light/src/lib.rs

@@ -0,0 +1,69 @@
+// 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/>.
+
+//! Light client logic and implementation.
+//!
+//! A "light" client stores very little chain-related data locally
+//! unlike a full node, which stores all blocks, headers, receipts, and more.
+//!
+//! This enables the client to have a much lower resource footprint in
+//! exchange for the cost of having to ask the network for state data
+//! while responding to queries. This makes a light client unsuitable for
+//! low-latency applications, but perfectly suitable for simple everyday
+//! use-cases like sending transactions from a personal account.
+//!
+//! The light client performs a header-only sync, doing verification and pruning
+//! historical blocks. Upon pruning, batches of 2048 blocks have a number => hash
+//! mapping sealed into "canonical hash tries" which can later be used to verify
+//! historical block queries from peers.
+
+#![deny(missing_docs)]
+
+pub mod client;
+pub mod net;
+
+#[cfg(not(feature = "ipc"))]
+pub mod provider;
+
+#[cfg(feature = "ipc")]
+pub mod provider {
+    #![allow(dead_code, unused_assignments, unused_variables, missing_docs)] // codegen issues
+	include!(concat!(env!("OUT_DIR"), "/provider.rs"));
+}
+
+#[cfg(feature = "ipc")]
+pub mod remote {
+    pub use provider::LightProviderClient;
+}
+
+mod types;
+
+pub use self::provider::Provider;
+pub use types::les_request as request;
+
+#[macro_use]
+extern crate log;
+
+extern crate ethcore;
+extern crate ethcore_util as util;
+extern crate ethcore_network as network;
+extern crate ethcore_io as io;
+extern crate rlp;
+extern crate smallvec;
+extern crate time;
+
+#[cfg(feature = "ipc")]
+extern crate ethcore_ipc as ipc;

ethcore/light/src/net/buffer_flow.rs

@@ -0,0 +1,320 @@
+// 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/>.
+
+//! LES buffer flow management.
+//!
+//! Every request in the LES protocol leads to a reduction
+//! of the requester's buffer value as a rate-limiting mechanism.
+//! This buffer value will recharge at a set rate.
+//!
+//! This module provides an interface for configuration of buffer
+//! flow costs and recharge rates.
+//!
+//! Current default costs are picked completely arbitrarily, not based 
+//! on any empirical timings or mathematical models.
+
+use request;
+use super::packet;
+use super::error::Error;
+
+use rlp::*;
+use util::U256;
+use time::{Duration, SteadyTime};
+
+/// A request cost specification.
+#[derive(Debug, Clone, PartialEq, Eq)]
+pub struct Cost(pub U256, pub U256);
+
+/// Buffer value.
+///
+/// Produced and recharged using `FlowParams`.
+/// Definitive updates can be made as well -- these will reset the recharge
+/// point to the time of the update.
+#[derive(Debug, Clone, PartialEq, Eq)]
+pub struct Buffer {
+	estimate: U256,
+	recharge_point: SteadyTime,
+}
+
+impl Buffer {
+	/// Get the current buffer value.
+	pub fn current(&self) -> U256 { self.estimate.clone() }
+
+	/// Make a definitive update.
+	/// This will be the value obtained after receiving
+	/// a response to a request.
+	pub fn update_to(&mut self, value: U256) {
+		self.estimate = value;
+		self.recharge_point = SteadyTime::now();
+	}
+
+	/// Attempt to apply the given cost to the buffer.
+	///
+	/// If successful, the cost will be deducted successfully.
+	///
+	/// If unsuccessful, the structure will be unaltered an an
+	/// error will be produced.
+	pub fn deduct_cost(&mut self, cost: U256) -> Result<(), Error> {
+		match cost > self.estimate {
+			true => Err(Error::BufferEmpty),
+			false => {
+				self.estimate = self.estimate - cost;
+				Ok(())
+			}
+		}
+	}
+}
+
+/// A cost table, mapping requests to base and per-request costs.
+#[derive(Debug, Clone, PartialEq, Eq)]
+pub struct CostTable {
+	headers: Cost,
+	bodies: Cost,
+	receipts: Cost,
+	state_proofs: Cost,
+	contract_codes: Cost,
+	header_proofs: Cost,
+}
+
+impl Default for CostTable {
+	fn default() -> Self {
+		// arbitrarily chosen constants.
+		CostTable {
+			headers: Cost(100000.into(), 10000.into()),
+			bodies: Cost(150000.into(), 15000.into()),
+			receipts: Cost(50000.into(), 5000.into()),
+			state_proofs: Cost(250000.into(), 25000.into()),
+			contract_codes: Cost(200000.into(), 20000.into()),
+			header_proofs: Cost(150000.into(), 15000.into()),
+		}
+	}
+}
+
+impl RlpEncodable for CostTable {
+	fn rlp_append(&self, s: &mut RlpStream) {
+		fn append_cost(s: &mut RlpStream, msg_id: u8, cost: &Cost) {
+			s.begin_list(3)
+				.append(&msg_id)
+				.append(&cost.0)
+				.append(&cost.1);
+		}
+
+		s.begin_list(6);
+
+		append_cost(s, packet::GET_BLOCK_HEADERS, &self.headers);
+		append_cost(s, packet::GET_BLOCK_BODIES, &self.bodies);
+		append_cost(s, packet::GET_RECEIPTS, &self.receipts);
+		append_cost(s, packet::GET_PROOFS, &self.state_proofs);
+		append_cost(s, packet::GET_CONTRACT_CODES, &self.contract_codes);
+		append_cost(s, packet::GET_HEADER_PROOFS, &self.header_proofs);
+	}
+}
+
+impl RlpDecodable for CostTable {
+	fn decode<D>(decoder: &D) -> Result<Self, DecoderError> where D: Decoder {
+		let rlp = decoder.as_rlp();
+
+		let mut headers = None;
+		let mut bodies = None;
+		let mut receipts = None;
+		let mut state_proofs = None;
+		let mut contract_codes = None;
+		let mut header_proofs = None;
+
+		for row in rlp.iter() {
+			let msg_id: u8 = row.val_at(0)?;
+			let cost = {
+				let base = row.val_at(1)?;
+				let per = row.val_at(2)?;
+
+				Cost(base, per)
+			};
+
+			match msg_id {
+				packet::GET_BLOCK_HEADERS => headers = Some(cost),
+				packet::GET_BLOCK_BODIES => bodies = Some(cost),
+				packet::GET_RECEIPTS => receipts = Some(cost),
+				packet::GET_PROOFS => state_proofs = Some(cost),
+				packet::GET_CONTRACT_CODES => contract_codes = Some(cost),
+				packet::GET_HEADER_PROOFS => header_proofs = Some(cost),
+				_ => return Err(DecoderError::Custom("Unrecognized message in cost table")),
+			}
+		}
+
+		Ok(CostTable {
+			headers: headers.ok_or(DecoderError::Custom("No headers cost specified"))?,
+			bodies: bodies.ok_or(DecoderError::Custom("No bodies cost specified"))?,
+			receipts: receipts.ok_or(DecoderError::Custom("No receipts cost specified"))?,
+			state_proofs: state_proofs.ok_or(DecoderError::Custom("No proofs cost specified"))?,
+			contract_codes: contract_codes.ok_or(DecoderError::Custom("No contract codes specified"))?,
+			header_proofs: header_proofs.ok_or(DecoderError::Custom("No header proofs cost specified"))?,
+		})
+	}
+}
+
+/// A buffer-flow manager handles costs, recharge, limits
+#[derive(Debug, Clone, PartialEq)]
+pub struct FlowParams {
+	costs: CostTable,
+	limit: U256,
+	recharge: U256,
+}
+
+impl FlowParams {
+	/// Create new flow parameters from a request cost table,
+	/// buffer limit, and (minimum) rate of recharge.
+	pub fn new(limit: U256, costs: CostTable, recharge: U256) -> Self {
+		FlowParams {
+			costs: costs,
+			limit: limit,
+			recharge: recharge,
+		}
+	}
+
+	/// Get a reference to the buffer limit.
+	pub fn limit(&self) -> &U256 { &self.limit }
+
+	/// Get a reference to the cost table.
+	pub fn cost_table(&self) -> &CostTable { &self.costs }
+
+	/// Get a reference to the recharge rate.
+	pub fn recharge_rate(&self) -> &U256 { &self.recharge }
+
+	/// Compute the actual cost of a request, given the kind of request
+	/// and number of requests made.
+	pub fn compute_cost(&self, kind: request::Kind, amount: usize) -> U256 {
+		let cost = match kind {
+			request::Kind::Headers => &self.costs.headers,
+			request::Kind::Bodies => &self.costs.bodies,
+			request::Kind::Receipts => &self.costs.receipts,
+			request::Kind::StateProofs => &self.costs.state_proofs,
+			request::Kind::Codes => &self.costs.contract_codes,
+			request::Kind::HeaderProofs => &self.costs.header_proofs,
+		};
+
+		let amount: U256 = amount.into();
+		cost.0 + (amount * cost.1)
+	}
+
+	/// Compute the maximum number of costs of a specific kind which can be made 
+	/// with the given buffer.
+	/// Saturates at `usize::max()`. This is not a problem in practice because
+	/// this amount of requests is already prohibitively large.
+	pub fn max_amount(&self, buffer: &Buffer, kind: request::Kind) -> usize {
+		use util::Uint;
+		use std::usize;
+
+		let cost = match kind {
+			request::Kind::Headers => &self.costs.headers,
+			request::Kind::Bodies => &self.costs.bodies,
+			request::Kind::Receipts => &self.costs.receipts,
+			request::Kind::StateProofs => &self.costs.state_proofs,
+			request::Kind::Codes => &self.costs.contract_codes,
+			request::Kind::HeaderProofs => &self.costs.header_proofs,
+		};
+
+		let start = buffer.current();
+
+		if start <= cost.0 {
+			return 0;
+		} else if cost.1 == U256::zero() {
+			return usize::MAX;
+		}
+
+		let max = (start - cost.0) / cost.1;
+		if max >= usize::MAX.into() {
+			usize::MAX
+		} else {
+			max.as_u64() as usize
+		}
+	}
+
+	/// Create initial buffer parameter.
+	pub fn create_buffer(&self) -> Buffer {
+		Buffer {
+			estimate: self.limit,
+			recharge_point: SteadyTime::now(),
+		}
+	}
+
+	/// Recharge the buffer based on time passed since last
+	/// update.
+	pub fn recharge(&self, buf: &mut Buffer) {
+		let now = SteadyTime::now();
+
+		// recompute and update only in terms of full seconds elapsed
+		// in order to keep the estimate as an underestimate.
+		let elapsed = (now - buf.recharge_point).num_seconds();
+		buf.recharge_point = buf.recharge_point + Duration::seconds(elapsed);
+
+		let elapsed: U256 = elapsed.into();
+
+		buf.estimate = ::std::cmp::min(self.limit, buf.estimate + (elapsed * self.recharge));
+	}
+
+	/// Refund some buffer which was previously deducted.
+	/// Does not update the recharge timestamp.
+	pub fn refund(&self, buf: &mut Buffer, refund_amount: U256) {
+		buf.estimate = buf.estimate + refund_amount;
+
+		if buf.estimate > self.limit {
+			buf.estimate = self.limit
+		}
+	}
+}
+
+impl Default for FlowParams {
+	fn default() -> Self {
+		FlowParams {
+			limit: 50_000_000.into(),
+			costs: CostTable::default(),
+			recharge: 100_000.into(),
+		}
+	}
+}
+
+#[cfg(test)]
+mod tests {
+	use super::*;
+
+	#[test]
+	fn should_serialize_cost_table() {
+		let costs = CostTable::default();
+		let serialized = ::rlp::encode(&costs);
+
+		let new_costs: CostTable = ::rlp::decode(&*serialized);
+
+		assert_eq!(costs, new_costs);
+	}
+
+	#[test]
+	fn buffer_mechanism() {
+		use std::thread;
+		use std::time::Duration;
+
+		let flow_params = FlowParams::new(100.into(), Default::default(), 20.into());
+		let mut buffer =  flow_params.create_buffer();
+
+		assert!(buffer.deduct_cost(101.into()).is_err());
+		assert!(buffer.deduct_cost(10.into()).is_ok());
+
+		thread::sleep(Duration::from_secs(1));
+
+		flow_params.recharge(&mut buffer);
+
+		assert_eq!(buffer.estimate, 100.into());
+	}
+}

ethcore/light/src/net/context.rs

@@ -0,0 +1,192 @@
+// 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/>.
+
+//! I/O and event context generalizations.
+
+use network::{NetworkContext, PeerId, NodeId};
+
+use super::{Announcement, LightProtocol, ReqId};
+use super::error::Error;
+use request::{self, Request};
+
+/// An I/O context which allows sending and receiving packets as well as
+/// disconnecting peers. This is used as a generalization of the portions
+/// of a p2p network which the light protocol structure makes use of.
+pub trait IoContext {
+	/// Send a packet to a specific peer.
+	fn send(&self, peer: PeerId, packet_id: u8, packet_body: Vec<u8>);
+
+	/// Respond to a peer's message. Only works if this context is a byproduct
+	/// of a packet handler.
+	fn respond(&self, packet_id: u8, packet_body: Vec<u8>);
+
+	/// Disconnect a peer.
+	fn disconnect_peer(&self, peer: PeerId);
+
+	/// Disable a peer -- this is a disconnect + a time-out.
+	fn disable_peer(&self, peer: PeerId);
+
+	/// Get a peer's protocol version.
+	fn protocol_version(&self, peer: PeerId) -> Option<u8>;
+
+	/// Persistent peer id
+	fn persistent_peer_id(&self, peer: PeerId) -> Option<NodeId>;
+}
+
+
+impl<'a> IoContext for NetworkContext<'a> {
+	fn send(&self, peer: PeerId, packet_id: u8, packet_body: Vec<u8>) {
+		if let Err(e) = self.send(peer, packet_id, packet_body) {
+			debug!(target: "les", "Error sending packet to peer {}: {}", peer, e);
+		}
+	}
+
+	fn respond(&self, packet_id: u8, packet_body: Vec<u8>) {
+		if let Err(e) = self.respond(packet_id, packet_body) {
+			debug!(target: "les", "Error responding to peer message: {}", e);
+		}
+	}
+
+	fn disconnect_peer(&self, peer: PeerId) {
+		NetworkContext::disconnect_peer(self, peer);
+	}
+
+	fn disable_peer(&self, peer: PeerId) {
+		NetworkContext::disable_peer(self, peer);
+	}
+
+	fn protocol_version(&self, peer: PeerId) -> Option<u8> {
+		self.protocol_version(self.subprotocol_name(), peer)
+	}
+
+	fn persistent_peer_id(&self, peer: PeerId) -> Option<NodeId> {
+		self.session_info(peer).and_then(|info| info.id)
+	}
+}
+
+/// Basic context for a the protocol.
+pub trait BasicContext {
+	/// Returns the relevant's peer persistent Id (aka NodeId).
+	fn persistent_peer_id(&self, peer: PeerId) -> Option<NodeId>;
+
+	/// Make a request from a peer.
+	fn request_from(&self, peer: PeerId, request: Request) -> Result<ReqId, Error>;
+
+	/// Make an announcement of new capabilities to the rest of the peers.
+	// TODO: maybe just put this on a timer in LightProtocol?
+	fn make_announcement(&self, announcement: Announcement);
+
+	/// Find the maximum number of requests of a specific type which can be made from
+	/// supplied peer.
+	fn max_requests(&self, peer: PeerId, kind: request::Kind) -> usize;
+
+	/// Disconnect a peer.
+	fn disconnect_peer(&self, peer: PeerId);
+
+	/// Disable a peer.
+	fn disable_peer(&self, peer: PeerId);
+}
+
+/// Context for a protocol event which has a peer ID attached.
+pub trait EventContext: BasicContext {
+	/// Get the peer relevant to the event e.g. message sender,
+	/// disconnected/connected peer.
+	fn peer(&self) -> PeerId;
+
+	/// Treat the event context as a basic context.
+	fn as_basic(&self) -> &BasicContext;
+}
+
+/// Basic context.
+pub struct TickCtx<'a> {
+	/// Io context to enable dispatch.
+	pub io: &'a IoContext,
+	/// Protocol implementation.
+	pub proto: &'a LightProtocol,
+}
+
+impl<'a> BasicContext for TickCtx<'a> {
+	fn persistent_peer_id(&self, id: PeerId) -> Option<NodeId> {
+		self.io.persistent_peer_id(id)
+	}
+
+	fn request_from(&self, peer: PeerId, request: Request) -> Result<ReqId, Error> {
+		self.proto.request_from(self.io, &peer, request)
+	}
+
+	fn make_announcement(&self, announcement: Announcement) {
+		self.proto.make_announcement(self.io, announcement);
+	}
+
+	fn max_requests(&self, peer: PeerId, kind: request::Kind) -> usize {
+		self.proto.max_requests(peer, kind)
+	}
+
+	fn disconnect_peer(&self, peer: PeerId) {
+		self.io.disconnect_peer(peer);
+	}
+
+	fn disable_peer(&self, peer: PeerId) {
+		self.io.disable_peer(peer);
+	}
+}
+
+/// Concrete implementation of `EventContext` over the light protocol struct and
+/// an io context.
+pub struct Ctx<'a> {
+	/// Io context to enable immediate response to events.
+	pub io: &'a IoContext,
+	/// Protocol implementation.
+	pub proto: &'a LightProtocol,
+	/// Relevant peer for event.
+	pub peer: PeerId,
+}
+
+impl<'a> BasicContext for Ctx<'a> {
+	fn persistent_peer_id(&self, id: PeerId) -> Option<NodeId> {
+		self.io.persistent_peer_id(id)
+	}
+
+	fn request_from(&self, peer: PeerId, request: Request) -> Result<ReqId, Error> {
+		self.proto.request_from(self.io, &peer, request)
+	}
+
+	fn make_announcement(&self, announcement: Announcement) {
+		self.proto.make_announcement(self.io, announcement);
+	}
+
+	fn max_requests(&self, peer: PeerId, kind: request::Kind) -> usize {
+		self.proto.max_requests(peer, kind)
+	}
+
+	fn disconnect_peer(&self, peer: PeerId) {
+		self.io.disconnect_peer(peer);
+	}
+
+	fn disable_peer(&self, peer: PeerId) {
+		self.io.disable_peer(peer);
+	}
+}
+
+impl<'a> EventContext for Ctx<'a> {
+	fn peer(&self) -> PeerId {
+		self.peer
+	}
+
+	fn as_basic(&self) -> &BasicContext {
+		&*self
+	}
+}

ethcore/light/src/net/error.rs

@@ -0,0 +1,118 @@
+// 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/>.
+
+//! Defines error types and levels of punishment to use upon
+//! encountering.
+
+use rlp::DecoderError;
+use network::NetworkError;
+
+use std::fmt;
+
+/// Levels of punishment.
+///
+/// Currently just encompasses two different kinds of disconnect and
+/// no punishment, but this is where reputation systems might come into play.
+// In ascending order
+#[derive(Debug, PartialEq, Eq)]
+pub enum Punishment {
+	/// Perform no punishment.
+	None,
+	/// Disconnect the peer, but don't prevent them from reconnecting.
+	Disconnect,
+	/// Disconnect the peer and prevent them from reconnecting.
+	Disable,
+}
+
+/// Kinds of errors which can be encountered in the course of LES.
+#[derive(Debug)]
+pub enum Error {
+	/// An RLP decoding error.
+	Rlp(DecoderError),
+	/// A network error.
+	Network(NetworkError),
+	/// Out of buffer.
+	BufferEmpty,
+	/// Unrecognized packet code.
+	UnrecognizedPacket(u8),
+	/// Unexpected handshake.
+	UnexpectedHandshake,
+	/// Peer on wrong network (wrong NetworkId or genesis hash)
+	WrongNetwork,
+	/// Unknown peer.
+	UnknownPeer,
+	/// Unsolicited response.
+	UnsolicitedResponse,
+	/// Not a server.
+	NotServer,
+	/// Unsupported protocol version.
+	UnsupportedProtocolVersion(u8),
+	/// Bad protocol version.
+	BadProtocolVersion,
+	/// Peer is overburdened.
+	Overburdened,
+}
+
+impl Error {
+	/// What level of punishment does this error warrant?
+	pub fn punishment(&self) -> Punishment {
+		match *self {
+			Error::Rlp(_) => Punishment::Disable,
+			Error::Network(_) => Punishment::None,
+			Error::BufferEmpty => Punishment::Disable,
+			Error::UnrecognizedPacket(_) => Punishment::Disconnect,
+			Error::UnexpectedHandshake => Punishment::Disconnect,
+			Error::WrongNetwork => Punishment::Disable,
+			Error::UnknownPeer => Punishment::Disconnect,
+			Error::UnsolicitedResponse => Punishment::Disable,
+			Error::NotServer => Punishment::Disable,
+			Error::UnsupportedProtocolVersion(_) => Punishment::Disable,
+			Error::BadProtocolVersion => Punishment::Disable,
+			Error::Overburdened => Punishment::None,
+		}
+	}
+}
+
+impl From<DecoderError> for Error {
+	fn from(err: DecoderError) -> Self {
+		Error::Rlp(err)
+	}
+}
+
+impl From<NetworkError> for Error {
+	fn from(err: NetworkError) -> Self {
+		Error::Network(err)
+	}
+}
+
+impl fmt::Display for Error {
+	fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+		match *self {
+			Error::Rlp(ref err) => err.fmt(f),
+			Error::Network(ref err) => err.fmt(f),
+			Error::BufferEmpty => write!(f, "Out of buffer"),
+			Error::UnrecognizedPacket(code) => write!(f, "Unrecognized packet: 0x{:x}", code),
+			Error::UnexpectedHandshake => write!(f, "Unexpected handshake"),
+			Error::WrongNetwork => write!(f, "Wrong network"),
+			Error::UnknownPeer => write!(f, "Unknown peer"),
+			Error::UnsolicitedResponse => write!(f, "Peer provided unsolicited data"),
+			Error::NotServer => write!(f, "Peer not a server."),
+			Error::UnsupportedProtocolVersion(pv) => write!(f, "Unsupported protocol version: {}", pv),
+			Error::BadProtocolVersion => write!(f, "Bad protocol version in handshake"),
+			Error::Overburdened => write!(f, "Peer overburdened"),
+		}
+	}
+}

ethcore/light/src/net/status.rs

@@ -0,0 +1,565 @@
+// 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/>.
+
+//! Peer status and capabilities.
+
+use rlp::{DecoderError, RlpDecodable, RlpEncodable, RlpStream, Stream, UntrustedRlp, View};
+use util::{H256, U256};
+
+use super::buffer_flow::FlowParams;
+
+// recognized handshake/announcement keys.
+// unknown keys are to be skipped, known keys have a defined order.
+// their string values are defined in the LES spec.
+#[derive(Debug, Clone, Copy, PartialEq, Eq, Ord, PartialOrd)]
+enum Key {
+	ProtocolVersion,
+	NetworkId,
+	HeadTD,
+	HeadHash,
+	HeadNum,
+	GenesisHash,
+	ServeHeaders,
+	ServeChainSince,
+	ServeStateSince,
+	TxRelay,
+	BufferLimit,
+	BufferCostTable,
+	BufferRechargeRate,
+}
+
+impl Key {
+	// get the string value of this key.
+	fn as_str(&self) -> &'static str {
+		match *self {
+			Key::ProtocolVersion => "protocolVersion",
+			Key::NetworkId => "networkId",
+			Key::HeadTD => "headTd",
+			Key::HeadHash => "headHash",
+			Key::HeadNum => "headNum",
+			Key::GenesisHash => "genesisHash",
+			Key::ServeHeaders => "serveHeaders",
+			Key::ServeChainSince => "serveChainSince",
+			Key::ServeStateSince => "serveStateSince",
+			Key::TxRelay => "txRelay",
+			Key::BufferLimit => "flowControl/BL",
+			Key::BufferCostTable => "flowControl/MRC",
+			Key::BufferRechargeRate => "flowControl/MRR",
+		}
+	}
+
+	// try to parse the key value from a string.
+	fn from_str(s: &str) -> Option<Self> {
+		match s {
+			"protocolVersion" => Some(Key::ProtocolVersion),
+			"networkId" => Some(Key::NetworkId),
+			"headTd" => Some(Key::HeadTD),
+			"headHash" => Some(Key::HeadHash),
+			"headNum" => Some(Key::HeadNum),
+			"genesisHash" => Some(Key::GenesisHash),
+			"serveHeaders" => Some(Key::ServeHeaders),
+			"serveChainSince" => Some(Key::ServeChainSince),
+			"serveStateSince" => Some(Key::ServeStateSince),
+			"txRelay" => Some(Key::TxRelay),
+			"flowControl/BL" => Some(Key::BufferLimit),
+			"flowControl/MRC" => Some(Key::BufferCostTable),
+			"flowControl/MRR" => Some(Key::BufferRechargeRate),
+			_ => None
+		}
+	}
+}
+
+// helper for decoding key-value pairs in the handshake or an announcement.
+struct Parser<'a> {
+	pos: usize,
+	rlp: UntrustedRlp<'a>,
+}
+
+impl<'a> Parser<'a> {
+	// expect a specific next key, and decode the value.
+	// error on unexpected key or invalid value.
+	fn expect<T: RlpDecodable>(&mut self, key: Key) -> Result<T, DecoderError> {
+		self.expect_raw(key).and_then(|item| item.as_val())
+	}
+
+	// expect a specific next key, and get the value's RLP.
+	// if the key isn't found, the position isn't advanced.
+	fn expect_raw(&mut self, key: Key) -> Result<UntrustedRlp<'a>, DecoderError> {
+		trace!(target: "les", "Expecting key {}", key.as_str());
+		let pre_pos = self.pos;
+		if let Some((k, val)) = self.get_next()? {
+			if k == key { return Ok(val) }
+		}
+
+		self.pos = pre_pos;
+		Err(DecoderError::Custom("Missing expected key"))
+	}
+
+	// get the next key and value RLP.
+	fn get_next(&mut self) -> Result<Option<(Key, UntrustedRlp<'a>)>, DecoderError> {
+		while self.pos < self.rlp.item_count() {
+			let pair = self.rlp.at(self.pos)?;
+			let k: String = pair.val_at(0)?;
+
+			self.pos += 1;
+			match Key::from_str(&k) {
+				Some(key) => return Ok(Some((key , pair.at(1)?))),
+				None => continue,
+			}
+		}
+
+		Ok(None)
+	}
+}
+
+// Helper for encoding a key-value pair
+fn encode_pair<T: RlpEncodable>(key: Key, val: &T) -> Vec<u8> {
+	let mut s = RlpStream::new_list(2);
+	s.append(&key.as_str()).append(val);
+	s.out()
+}
+
+// Helper for encoding a flag.
+fn encode_flag(key: Key) -> Vec<u8> {
+	let mut s = RlpStream::new_list(2);
+	s.append(&key.as_str()).append_empty_data();
+	s.out()
+}
+
+/// A peer status message.
+#[derive(Debug, Clone, PartialEq, Eq)]
+pub struct Status {
+	/// Protocol version.
+	pub protocol_version: u32,
+	/// Network id of this peer.
+	pub network_id: u64,
+	/// Total difficulty of the head of the chain.
+	pub head_td: U256,
+	/// Hash of the best block.
+	pub head_hash: H256,
+	/// Number of the best block.
+	pub head_num: u64,
+	/// Genesis hash
+	pub genesis_hash: H256,
+	/// Last announced chain head and reorg depth to common ancestor.
+	pub last_head: Option<(H256, u64)>,
+}
+
+/// Peer capabilities.
+#[derive(Debug, Clone, PartialEq, Eq)]
+pub struct Capabilities {
+	/// Whether this peer can serve headers
+	pub serve_headers: bool,
+	/// Earliest block number it can serve block/receipt requests for.
+	/// `None` means no requests will be servable.
+	pub serve_chain_since: Option<u64>,
+	/// Earliest block number it can serve state requests for.
+	/// `None` means no requests will be servable.
+	pub serve_state_since: Option<u64>,
+	/// Whether it can relay transactions to the eth network.
+	pub tx_relay: bool,
+}
+
+impl Default for Capabilities {
+	fn default() -> Self {
+		Capabilities {
+			serve_headers: true,
+			serve_chain_since: None,
+			serve_state_since: None,
+			tx_relay: false,
+		}
+	}
+}
+
+impl Capabilities {
+	/// Update the capabilities from an announcement.
+	pub fn update_from(&mut self, announcement: &Announcement) {
+		self.serve_headers = self.serve_headers || announcement.serve_headers;
+		self.serve_state_since = self.serve_state_since.or(announcement.serve_state_since);
+		self.serve_chain_since = self.serve_chain_since.or(announcement.serve_chain_since);
+		self.tx_relay = self.tx_relay || announcement.tx_relay;
+	}
+}
+
+/// Attempt to parse a handshake message into its three parts:
+///   - chain status
+///   - serving capabilities
+///   - buffer flow parameters
+pub fn parse_handshake(rlp: UntrustedRlp) -> Result<(Status, Capabilities, Option<FlowParams>), DecoderError> {
+	let mut parser = Parser {
+		pos: 0,
+		rlp: rlp,
+	};
+
+	let status = Status {
+		protocol_version: parser.expect(Key::ProtocolVersion)?,
+		network_id: parser.expect(Key::NetworkId)?,
+		head_td: parser.expect(Key::HeadTD)?,
+		head_hash: parser.expect(Key::HeadHash)?,
+		head_num: parser.expect(Key::HeadNum)?,
+		genesis_hash: parser.expect(Key::GenesisHash)?,
+		last_head: None,
+	};
+
+	let capabilities = Capabilities {
+		serve_headers: parser.expect_raw(Key::ServeHeaders).is_ok(),
+		serve_chain_since: parser.expect(Key::ServeChainSince).ok(),
+		serve_state_since: parser.expect(Key::ServeStateSince).ok(),
+		tx_relay: parser.expect_raw(Key::TxRelay).is_ok(),
+	};
+
+	let flow_params = match (
+		parser.expect(Key::BufferLimit),
+		parser.expect(Key::BufferCostTable),
+		parser.expect(Key::BufferRechargeRate)
+	) {
+		(Ok(bl), Ok(bct), Ok(brr)) => Some(FlowParams::new(bl, bct, brr)),
+		_ => None,
+	};
+
+	Ok((status, capabilities, flow_params))
+}
+
+/// Write a handshake, given status, capabilities, and flow parameters.
+pub fn write_handshake(status: &Status, capabilities: &Capabilities, flow_params: Option<&FlowParams>) -> Vec<u8> {
+	let mut pairs = Vec::new();
+	pairs.push(encode_pair(Key::ProtocolVersion, &status.protocol_version));
+	pairs.push(encode_pair(Key::NetworkId, &(status.network_id as u64)));
+	pairs.push(encode_pair(Key::HeadTD, &status.head_td));
+	pairs.push(encode_pair(Key::HeadHash, &status.head_hash));
+	pairs.push(encode_pair(Key::HeadNum, &status.head_num));
+	pairs.push(encode_pair(Key::GenesisHash, &status.genesis_hash));
+
+	if capabilities.serve_headers {
+		pairs.push(encode_flag(Key::ServeHeaders));
+	}
+	if let Some(ref serve_chain_since) = capabilities.serve_chain_since {
+		pairs.push(encode_pair(Key::ServeChainSince, serve_chain_since));
+	}
+	if let Some(ref serve_state_since) = capabilities.serve_state_since {
+		pairs.push(encode_pair(Key::ServeStateSince, serve_state_since));
+	}
+	if capabilities.tx_relay {
+		pairs.push(encode_flag(Key::TxRelay));
+	}
+
+	if let Some(flow_params) = flow_params {
+		pairs.push(encode_pair(Key::BufferLimit, flow_params.limit()));
+		pairs.push(encode_pair(Key::BufferCostTable, flow_params.cost_table()));
+		pairs.push(encode_pair(Key::BufferRechargeRate, flow_params.recharge_rate()));
+	}
+
+	let mut stream = RlpStream::new_list(pairs.len());
+
+	for pair in pairs {
+		stream.append_raw(&pair, 1);
+	}
+
+	stream.out()
+}
+
+/// An announcement of new chain head or capabilities made by a peer.
+#[derive(Debug, Clone, PartialEq, Eq)]
+pub struct Announcement {
+	/// Hash of the best block.
+	pub head_hash: H256,
+	/// Number of the best block.
+	pub head_num: u64,
+	/// Head total difficulty
+	pub head_td: U256,
+	/// reorg depth to common ancestor of last announced head.
+	pub reorg_depth: u64,
+	/// optional new header-serving capability. false means "no change"
+	pub serve_headers: bool,
+	/// optional new state-serving capability
+	pub serve_state_since: Option<u64>,
+	/// optional new chain-serving capability
+	pub serve_chain_since: Option<u64>,
+	/// optional new transaction-relay capability. false means "no change"
+	pub tx_relay: bool,
+	// TODO: changes in buffer flow?
+}
+
+/// Parse an announcement.
+pub fn parse_announcement(rlp: UntrustedRlp) -> Result<Announcement, DecoderError> {
+	let mut last_key = None;
+
+	let mut announcement = Announcement {
+		head_hash: rlp.val_at(0)?,
+		head_num: rlp.val_at(1)?,
+		head_td: rlp.val_at(2)?,
+		reorg_depth: rlp.val_at(3)?,
+		serve_headers: false,
+		serve_state_since: None,
+		serve_chain_since: None,
+		tx_relay: false,
+	};
+
+	let mut parser = Parser {
+		pos: 4,
+		rlp: rlp,
+	};
+
+	while let Some((key, item)) = parser.get_next()? {
+		if Some(key) <= last_key { return Err(DecoderError::Custom("Invalid announcement key ordering")) }
+		last_key = Some(key);
+
+		match key {
+			Key::ServeHeaders => announcement.serve_headers = true,
+			Key::ServeStateSince => announcement.serve_state_since = Some(item.as_val()?),
+			Key::ServeChainSince => announcement.serve_chain_since = Some(item.as_val()?),
+			Key::TxRelay => announcement.tx_relay = true,
+			_ => return Err(DecoderError::Custom("Nonsensical key in announcement")),
+		}
+	}
+
+	Ok(announcement)
+}
+
+/// Write an announcement out.
+pub fn write_announcement(announcement: &Announcement) -> Vec<u8> {
+	let mut pairs = Vec::new();
+	if announcement.serve_headers {
+		pairs.push(encode_flag(Key::ServeHeaders));
+	}
+	if let Some(ref serve_chain_since) = announcement.serve_chain_since {
+		pairs.push(encode_pair(Key::ServeChainSince, serve_chain_since));
+	}
+	if let Some(ref serve_state_since) = announcement.serve_state_since {
+		pairs.push(encode_pair(Key::ServeStateSince, serve_state_since));
+	}
+	if announcement.tx_relay {
+		pairs.push(encode_flag(Key::TxRelay));
+	}
+
+	let mut stream = RlpStream::new_list(4 + pairs.len());
+	stream
+		.append(&announcement.head_hash)
+		.append(&announcement.head_num)
+		.append(&announcement.head_td)
+		.append(&announcement.reorg_depth);
+
+	for item in pairs {
+		stream.append_raw(&item, 1);
+	}
+
+	stream.out()
+}
+
+#[cfg(test)]
+mod tests {
+	use super::*;
+	use super::super::buffer_flow::FlowParams;
+	use util::{U256, H256, FixedHash};
+	use rlp::{RlpStream, Stream ,UntrustedRlp, View};
+
+	#[test]
+	fn full_handshake() {
+		let status = Status {
+			protocol_version: 1,
+			network_id: 1,
+			head_td: U256::default(),
+			head_hash: H256::default(),
+			head_num: 10,
+			genesis_hash: H256::zero(),
+			last_head: None,
+		};
+
+		let capabilities = Capabilities {
+			serve_headers: true,
+			serve_chain_since: Some(5),
+			serve_state_since: Some(8),
+			tx_relay: true,
+		};
+
+		let flow_params = FlowParams::new(
+			1_000_000.into(),
+			Default::default(),
+			1000.into(),
+		);
+
+		let handshake = write_handshake(&status, &capabilities, Some(&flow_params));
+
+		let (read_status, read_capabilities, read_flow)
+			= parse_handshake(UntrustedRlp::new(&handshake)).unwrap();
+
+		assert_eq!(read_status, status);
+		assert_eq!(read_capabilities, capabilities);
+		assert_eq!(read_flow.unwrap(), flow_params);
+	}
+
+	#[test]
+	fn partial_handshake() {
+		let status = Status {
+			protocol_version: 1,
+			network_id: 1,
+			head_td: U256::default(),
+			head_hash: H256::default(),
+			head_num: 10,
+			genesis_hash: H256::zero(),
+			last_head: None,
+		};
+
+		let capabilities = Capabilities {
+			serve_headers: false,
+			serve_chain_since: Some(5),
+			serve_state_since: None,
+			tx_relay: true,
+		};
+
+		let flow_params = FlowParams::new(
+			1_000_000.into(),
+			Default::default(),
+			1000.into(),
+		);
+
+		let handshake = write_handshake(&status, &capabilities, Some(&flow_params));
+
+		let (read_status, read_capabilities, read_flow)
+			= parse_handshake(UntrustedRlp::new(&handshake)).unwrap();
+
+		assert_eq!(read_status, status);
+		assert_eq!(read_capabilities, capabilities);
+		assert_eq!(read_flow.unwrap(), flow_params);
+	}
+
+	#[test]
+	fn skip_unknown_keys() {
+		let status = Status {
+			protocol_version: 1,
+			network_id: 1,
+			head_td: U256::default(),
+			head_hash: H256::default(),
+			head_num: 10,
+			genesis_hash: H256::zero(),
+			last_head: None,
+		};
+
+		let capabilities = Capabilities {
+			serve_headers: false,
+			serve_chain_since: Some(5),
+			serve_state_since: None,
+			tx_relay: true,
+		};
+
+		let flow_params = FlowParams::new(
+			1_000_000.into(),
+			Default::default(),
+			1000.into(),
+		);
+
+		let handshake = write_handshake(&status, &capabilities, Some(&flow_params));
+		let interleaved = {
+			let handshake = UntrustedRlp::new(&handshake);
+			let mut stream = RlpStream::new_list(handshake.item_count() * 3);
+
+			for item in handshake.iter() {
+				stream.append_raw(item.as_raw(), 1);
+				let (mut s1, mut s2) = (RlpStream::new_list(2), RlpStream::new_list(2));
+				s1.append(&"foo").append_empty_data();
+				s2.append(&"bar").append_empty_data();
+				stream.append_raw(&s1.out(), 1);
+				stream.append_raw(&s2.out(), 1);
+			}
+
+			stream.out()
+		};
+
+		let (read_status, read_capabilities, read_flow)
+			= parse_handshake(UntrustedRlp::new(&interleaved)).unwrap();
+
+		assert_eq!(read_status, status);
+		assert_eq!(read_capabilities, capabilities);
+		assert_eq!(read_flow.unwrap(), flow_params);
+	}
+
+	#[test]
+	fn announcement_roundtrip() {
+		let announcement = Announcement {
+			head_hash: H256::random(),
+			head_num: 100_000,
+			head_td: 1_000_000.into(),
+			reorg_depth: 4,
+			serve_headers: false,
+			serve_state_since: Some(99_000),
+			serve_chain_since: Some(1),
+			tx_relay: true,
+		};
+
+		let serialized = write_announcement(&announcement);
+		let read = parse_announcement(UntrustedRlp::new(&serialized)).unwrap();
+
+		assert_eq!(read, announcement);
+	}
+
+	#[test]
+	fn keys_out_of_order() {
+		use super::{Key, encode_pair, encode_flag};
+
+		let mut stream = RlpStream::new_list(6);
+		stream
+			.append(&H256::zero())
+			.append(&10u64)
+			.append(&100_000u64)
+			.append(&2u64)
+			.append_raw(&encode_pair(Key::ServeStateSince, &44u64), 1)
+			.append_raw(&encode_flag(Key::ServeHeaders), 1);
+
+		let out = stream.drain();
+		assert!(parse_announcement(UntrustedRlp::new(&out)).is_err());
+
+		let mut stream = RlpStream::new_list(6);
+		stream
+			.append(&H256::zero())
+			.append(&10u64)
+			.append(&100_000u64)
+			.append(&2u64)
+			.append_raw(&encode_flag(Key::ServeHeaders), 1)
+			.append_raw(&encode_pair(Key::ServeStateSince, &44u64), 1);
+
+		let out = stream.drain();
+		assert!(parse_announcement(UntrustedRlp::new(&out)).is_ok());
+	}
+
+	#[test]
+	fn optional_flow() {
+		let status = Status {
+			protocol_version: 1,
+			network_id: 1,
+			head_td: U256::default(),
+			head_hash: H256::default(),
+			head_num: 10,
+			genesis_hash: H256::zero(),
+			last_head: None,
+		};
+
+		let capabilities = Capabilities {
+			serve_headers: true,
+			serve_chain_since: Some(5),
+			serve_state_since: Some(8),
+			tx_relay: true,
+		};
+
+		let handshake = write_handshake(&status, &capabilities, None);
+
+		let (read_status, read_capabilities, read_flow)
+			= parse_handshake(UntrustedRlp::new(&handshake)).unwrap();
+
+		assert_eq!(read_status, status);
+		assert_eq!(read_capabilities, capabilities);
+		assert!(read_flow.is_none());
+	}
+}

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

@@ -0,0 +1,486 @@
+// 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/>.
+
+//! Tests for the `LightProtocol` implementation.
+//! These don't test of the higher level logic on top of
+
+use ethcore::blockchain_info::BlockChainInfo;
+use ethcore::client::{BlockChainClient, EachBlockWith, TestBlockChainClient};
+use ethcore::ids::BlockId;
+use ethcore::transaction::PendingTransaction;
+use ethcore::encoded;
+use network::{PeerId, NodeId};
+
+use net::buffer_flow::FlowParams;
+use net::context::IoContext;
+use net::status::{Capabilities, Status, write_handshake};
+use net::{encode_request, LightProtocol, Params, packet};
+use provider::Provider;
+use request::{self, Request, Headers};
+
+use rlp::*;
+use util::{Bytes, H256, U256};
+
+use std::sync::Arc;
+
+// expected result from a call.
+#[derive(Debug, PartialEq, Eq)]
+enum Expect {
+	/// Expect to have message sent to peer.
+	Send(PeerId, u8, Vec<u8>),
+	/// Expect this response.
+	Respond(u8, Vec<u8>),
+	/// Expect a punishment (disconnect/disable)
+	Punish(PeerId),
+	/// Expect nothing.
+	Nothing,
+}
+
+impl IoContext for Expect {
+	fn send(&self, peer: PeerId, packet_id: u8, packet_body: Vec<u8>) {
+		assert_eq!(self, &Expect::Send(peer, packet_id, packet_body));
+	}
+
+	fn respond(&self, packet_id: u8, packet_body: Vec<u8>) {
+		assert_eq!(self, &Expect::Respond(packet_id, packet_body));
+	}
+
+	fn disconnect_peer(&self, peer: PeerId) {
+		assert_eq!(self, &Expect::Punish(peer));
+	}
+
+	fn disable_peer(&self, peer: PeerId) {
+		assert_eq!(self, &Expect::Punish(peer));
+	}
+
+	fn protocol_version(&self, _peer: PeerId) -> Option<u8> {
+		Some(super::MAX_PROTOCOL_VERSION)
+	}
+
+	fn persistent_peer_id(&self, _peer: PeerId) -> Option<NodeId> {
+		None
+	}
+}
+
+// can't implement directly for Arc due to cross-crate orphan rules.
+struct TestProvider(Arc<TestProviderInner>);
+
+struct TestProviderInner {
+	client: TestBlockChainClient,
+}
+
+impl Provider for TestProvider {
+	fn chain_info(&self) -> BlockChainInfo {
+		self.0.client.chain_info()
+	}
+
+	fn reorg_depth(&self, a: &H256, b: &H256) -> Option<u64> {
+		self.0.client.tree_route(a, b).map(|route| route.index as u64)
+	}
+
+	fn earliest_state(&self) -> Option<u64> {
+		None
+	}
+
+	fn block_header(&self, id: BlockId) -> Option<encoded::Header> {
+		self.0.client.block_header(id)
+	}
+
+	fn block_body(&self, id: BlockId) -> Option<encoded::Body> {
+		self.0.client.block_body(id)
+	}
+
+	fn block_receipts(&self, hash: &H256) -> Option<Bytes> {
+		self.0.client.block_receipts(&hash)
+	}
+
+	fn state_proof(&self, req: request::StateProof) -> Vec<Bytes> {
+		match req.key2 {
+			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();
+				vec![stream.out()]
+			}
+		}
+	}
+
+	fn contract_code(&self, req: request::ContractCode) -> Bytes {
+		req.account_key.iter().chain(req.account_key.iter()).cloned().collect()
+	}
+
+	fn header_proof(&self, _req: request::HeaderProof) -> Option<(encoded::Header, Vec<Bytes>)> {
+		None
+	}
+
+	fn ready_transactions(&self) -> Vec<PendingTransaction> {
+		self.0.client.ready_transactions()
+	}
+}
+
+fn make_flow_params() -> FlowParams {
+	FlowParams::new(5_000_000.into(), Default::default(), 100_000.into())
+}
+
+fn capabilities() -> Capabilities {
+	Capabilities {
+		serve_headers: true,
+		serve_chain_since: Some(1),
+		serve_state_since: Some(1),
+		tx_relay: true,
+	}
+}
+
+// helper for setting up the protocol handler and provider.
+fn setup(flow_params: FlowParams, capabilities: Capabilities) -> (Arc<TestProviderInner>, LightProtocol) {
+	let provider = Arc::new(TestProviderInner {
+		client: TestBlockChainClient::new(),
+	});
+
+	let proto = LightProtocol::new(Arc::new(TestProvider(provider.clone())), Params {
+		network_id: 2,
+		flow_params: flow_params,
+		capabilities: capabilities,
+	});
+
+	(provider, proto)
+}
+
+fn status(chain_info: BlockChainInfo) -> Status {
+	Status {
+		protocol_version: 1,
+		network_id: 2,
+		head_td: chain_info.total_difficulty,
+		head_hash: chain_info.best_block_hash,
+		head_num: chain_info.best_block_number,
+		genesis_hash: chain_info.genesis_hash,
+		last_head: None,
+	}
+}
+
+#[test]
+fn handshake_expected() {
+	let flow_params = make_flow_params();
+	let capabilities = capabilities();
+
+	let (provider, proto) = setup(flow_params.clone(), capabilities.clone());
+
+	let status = status(provider.client.chain_info());
+
+	let packet_body = write_handshake(&status, &capabilities, Some(&flow_params));
+
+	proto.on_connect(&1, &Expect::Send(1, packet::STATUS, packet_body));
+}
+
+#[test]
+#[should_panic]
+fn genesis_mismatch() {
+	let flow_params = make_flow_params();
+	let capabilities = capabilities();
+
+	let (provider, proto) = setup(flow_params.clone(), capabilities.clone());
+
+	let mut status = status(provider.client.chain_info());
+	status.genesis_hash = H256::default();
+
+	let packet_body = write_handshake(&status, &capabilities, Some(&flow_params));
+
+	proto.on_connect(&1, &Expect::Send(1, packet::STATUS, packet_body));
+}
+
+#[test]
+fn buffer_overflow() {
+	let flow_params = make_flow_params();
+	let capabilities = capabilities();
+
+	let (provider, proto) = setup(flow_params.clone(), capabilities.clone());
+
+	let status = status(provider.client.chain_info());
+
+	{
+		let packet_body = write_handshake(&status, &capabilities, Some(&flow_params));
+		proto.on_connect(&1, &Expect::Send(1, packet::STATUS, packet_body));
+	}
+
+	{
+		let my_status = write_handshake(&status, &capabilities, Some(&flow_params));
+		proto.handle_packet(&Expect::Nothing, &1, packet::STATUS, &my_status);
+	}
+
+	// 1000 requests is far too many for the default flow params.
+	let request = encode_request(&Request::Headers(Headers {
+		start: 1.into(),
+		max: 1000,
+		skip: 0,
+		reverse: false,
+	}), 111);
+
+	proto.handle_packet(&Expect::Punish(1), &1, packet::GET_BLOCK_HEADERS, &request);
+}
+
+// test the basic request types -- these just make sure that requests are parsed
+// and sent to the provider correctly as well as testing response formatting.
+
+#[test]
+fn get_block_headers() {
+	let flow_params = FlowParams::new(5_000_000.into(), Default::default(), 0.into());
+	let capabilities = capabilities();
+
+	let (provider, proto) = setup(flow_params.clone(), capabilities.clone());
+
+	let cur_status = status(provider.client.chain_info());
+	let my_status = write_handshake(&cur_status, &capabilities, Some(&flow_params));
+
+	provider.client.add_blocks(100, EachBlockWith::Nothing);
+
+	let cur_status = status(provider.client.chain_info());
+
+	{
+		let packet_body = write_handshake(&cur_status, &capabilities, Some(&flow_params));
+		proto.on_connect(&1, &Expect::Send(1, packet::STATUS, packet_body));
+		proto.handle_packet(&Expect::Nothing, &1, packet::STATUS, &my_status);
+	}
+
+	let request = Headers {
+		start: 1.into(),
+		max: 10,
+		skip: 0,
+		reverse: false,
+	};
+	let req_id = 111;
+
+	let request_body = encode_request(&Request::Headers(request.clone()), req_id);
+	let response = {
+		let headers: Vec<_> = (0..10).map(|i| provider.client.block_header(BlockId::Number(i + 1)).unwrap()).collect();
+		assert_eq!(headers.len(), 10);
+
+		let new_buf = *flow_params.limit() - flow_params.compute_cost(request::Kind::Headers, 10);
+
+		let mut response_stream = RlpStream::new_list(3);
+
+		response_stream.append(&req_id).append(&new_buf).begin_list(10);
+		for header in headers {
+			response_stream.append_raw(&header.into_inner(), 1);
+		}
+
+		response_stream.out()
+	};
+
+	let expected = Expect::Respond(packet::BLOCK_HEADERS, response);
+	proto.handle_packet(&expected, &1, packet::GET_BLOCK_HEADERS, &request_body);
+}
+
+#[test]
+fn get_block_bodies() {
+	let flow_params = FlowParams::new(5_000_000.into(), Default::default(), 0.into());
+	let capabilities = capabilities();
+
+	let (provider, proto) = setup(flow_params.clone(), capabilities.clone());
+
+	let cur_status = status(provider.client.chain_info());
+	let my_status = write_handshake(&cur_status, &capabilities, Some(&flow_params));
+
+	provider.client.add_blocks(100, EachBlockWith::Nothing);
+
+	let cur_status = status(provider.client.chain_info());
+
+	{
+		let packet_body = write_handshake(&cur_status, &capabilities, Some(&flow_params));
+		proto.on_connect(&1, &Expect::Send(1, packet::STATUS, packet_body));
+		proto.handle_packet(&Expect::Nothing, &1, packet::STATUS, &my_status);
+	}
+
+	let request = request::Bodies {
+		block_hashes: (0..10).map(|i| provider.client.block_hash(BlockId::Number(i)).unwrap()).collect(),
+	};
+
+	let req_id = 111;
+
+	let request_body = encode_request(&Request::Bodies(request.clone()), req_id);
+	let response = {
+		let bodies: Vec<_> = (0..10).map(|i| provider.client.block_body(BlockId::Number(i + 1)).unwrap()).collect();
+		assert_eq!(bodies.len(), 10);
+
+		let new_buf = *flow_params.limit() - flow_params.compute_cost(request::Kind::Bodies, 10);
+
+		let mut response_stream = RlpStream::new_list(3);
+
+		response_stream.append(&req_id).append(&new_buf).begin_list(10);
+		for body in bodies {
+			response_stream.append_raw(&body.into_inner(), 1);
+		}
+
+		response_stream.out()
+	};
+
+	let expected = Expect::Respond(packet::BLOCK_BODIES, response);
+	proto.handle_packet(&expected, &1, packet::GET_BLOCK_BODIES, &request_body);
+}
+
+#[test]
+fn get_block_receipts() {
+	let flow_params = FlowParams::new(5_000_000.into(), Default::default(), 0.into());
+	let capabilities = capabilities();
+
+	let (provider, proto) = setup(flow_params.clone(), capabilities.clone());
+
+	let cur_status = status(provider.client.chain_info());
+	let my_status = write_handshake(&cur_status, &capabilities, Some(&flow_params));
+
+	provider.client.add_blocks(1000, EachBlockWith::Nothing);
+
+	let cur_status = status(provider.client.chain_info());
+
+	{
+		let packet_body = write_handshake(&cur_status, &capabilities, Some(&flow_params));
+		proto.on_connect(&1, &Expect::Send(1, packet::STATUS, packet_body));
+		proto.handle_packet(&Expect::Nothing, &1, packet::STATUS, &my_status);
+	}
+
+	// find the first 10 block hashes starting with `f` because receipts are only provided
+	// by the test client in that case.
+	let block_hashes: Vec<_> = (0..1000).map(|i| provider.client.block_hash(BlockId::Number(i)).unwrap())
+		.filter(|hash| format!("{}", hash).starts_with("f")).take(10).collect();
+
+	let request = request::Receipts {
+		block_hashes: block_hashes.clone(),
+	};
+
+	let req_id = 111;
+
+	let request_body = encode_request(&Request::Receipts(request.clone()), req_id);
+	let response = {
+		let receipts: Vec<_> = block_hashes.iter()
+			.map(|hash| provider.client.block_receipts(hash).unwrap())
+			.collect();
+
+		let new_buf = *flow_params.limit() - flow_params.compute_cost(request::Kind::Receipts, receipts.len());
+
+		let mut response_stream = RlpStream::new_list(3);
+
+		response_stream.append(&req_id).append(&new_buf).begin_list(receipts.len());
+		for block_receipts in receipts {
+			response_stream.append_raw(&block_receipts, 1);
+		}
+
+		response_stream.out()
+	};
+
+	let expected = Expect::Respond(packet::RECEIPTS, response);
+	proto.handle_packet(&expected, &1, packet::GET_RECEIPTS, &request_body);
+}
+
+#[test]
+fn get_state_proofs() {
+	let flow_params = FlowParams::new(5_000_000.into(), Default::default(), 0.into());
+	let capabilities = capabilities();
+
+	let (provider, proto) = setup(flow_params.clone(), capabilities.clone());
+
+	let cur_status = status(provider.client.chain_info());
+
+	{
+		let packet_body = write_handshake(&cur_status, &capabilities, Some(&flow_params));
+		proto.on_connect(&1, &Expect::Send(1, packet::STATUS, packet_body.clone()));
+		proto.handle_packet(&Expect::Nothing, &1, packet::STATUS, &packet_body);
+	}
+
+	let req_id = 112;
+	let key1 = U256::from(11223344).into();
+	let key2 = U256::from(99988887).into();
+
+	let request = Request::StateProofs (request::StateProofs {
+		requests: vec![
+			request::StateProof { block: H256::default(), key1: key1, key2: None, from_level: 0 },
+			request::StateProof { block: H256::default(), key1: key1, key2: Some(key2), from_level: 0},
+		]
+	});
+
+	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(); vec![stream.out()] },
+			vec![::util::sha3::SHA3_NULL_RLP.to_vec()],
+		];
+
+		let new_buf = *flow_params.limit() - flow_params.compute_cost(request::Kind::StateProofs, 2);
+
+		let mut response_stream = RlpStream::new_list(3);
+
+		response_stream.append(&req_id).append(&new_buf).begin_list(2);
+		for proof in proofs {
+			response_stream.begin_list(proof.len());
+			for node in proof {
+				response_stream.append_raw(&node, 1);
+			}
+		}
+
+		response_stream.out()
+	};
+
+	let expected = Expect::Respond(packet::PROOFS, response);
+	proto.handle_packet(&expected, &1, packet::GET_PROOFS, &request_body);
+}
+
+#[test]
+fn get_contract_code() {
+	let flow_params = FlowParams::new(5_000_000.into(), Default::default(), 0.into());
+	let capabilities = capabilities();
+
+	let (provider, proto) = setup(flow_params.clone(), capabilities.clone());
+
+	let cur_status = status(provider.client.chain_info());
+
+	{
+		let packet_body = write_handshake(&cur_status, &capabilities, Some(&flow_params));
+		proto.on_connect(&1, &Expect::Send(1, packet::STATUS, packet_body.clone()));
+		proto.handle_packet(&Expect::Nothing, &1, packet::STATUS, &packet_body);
+	}
+
+	let req_id = 112;
+	let key1 = U256::from(11223344).into();
+	let key2 = U256::from(99988887).into();
+
+	let request = Request::Codes (request::ContractCodes {
+		code_requests: vec![
+			request::ContractCode { block_hash: H256::default(), account_key: key1 },
+			request::ContractCode { block_hash: H256::default(), account_key: key2 },
+		],
+	});
+
+	let request_body = encode_request(&request, req_id);
+	let response = {
+		let codes: Vec<Vec<_>> = vec![
+			key1.iter().chain(key1.iter()).cloned().collect(),
+            key2.iter().chain(key2.iter()).cloned().collect(),
+		];
+
+		let new_buf = *flow_params.limit() - flow_params.compute_cost(request::Kind::Codes, 2);
+
+		let mut response_stream = RlpStream::new_list(3);
+
+		response_stream.append(&req_id).append(&new_buf).begin_list(2);
+		for code in codes {
+			response_stream.append(&code);
+		}
+
+		response_stream.out()
+	};
+
+	let expected = Expect::Respond(packet::CONTRACT_CODES, response);
+	proto.handle_packet(&expected, &1, packet::GET_CONTRACT_CODES, &request_body);
+}

ethcore/light/src/provider.rs

@@ -0,0 +1,236 @@
+// 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/>.
+
+//! A provider for the LES protocol. This is typically a full node, who can
+//! give as much data as necessary to its peers.
+
+use ethcore::blockchain_info::BlockChainInfo;
+use ethcore::client::{BlockChainClient, ProvingBlockChainClient};
+use ethcore::transaction::PendingTransaction;
+use ethcore::ids::BlockId;
+use ethcore::encoded;
+
+use util::{Bytes, H256};
+
+use request;
+
+/// Defines the operations that a provider for `LES` must fulfill.
+///
+/// These are defined at [1], but may be subject to change.
+/// Requests which can't be fulfilled should return either an empty RLP list
+/// or empty vector where appropriate.
+///
+/// [1]: https://github.com/ethcore/parity/wiki/Light-Ethereum-Subprotocol-(LES)
+#[cfg_attr(feature = "ipc", ipc(client_ident="LightProviderClient"))]
+pub trait Provider: Send + Sync {
+	/// Provide current blockchain info.
+	fn chain_info(&self) -> BlockChainInfo;
+
+	/// Find the depth of a common ancestor between two blocks.
+	/// If either block is unknown or an ancestor can't be found
+	/// then return `None`.
+	fn reorg_depth(&self, a: &H256, b: &H256) -> Option<u64>;
+
+	/// Earliest block where state queries are available.
+	/// If `None`, no state queries are servable.
+	fn earliest_state(&self) -> Option<u64>;
+
+	/// Provide a list of headers starting at the requested block,
+	/// possibly in reverse and skipping `skip` at a time.
+	///
+	/// 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<encoded::Header> {
+		use request::HashOrNumber;
+
+		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,
+			HashOrNumber::Hash(hash) => match self.block_header(BlockId::Hash(hash)) {
+				None => {
+					trace!(target: "les_provider", "Unknown block hash {} requested", hash);
+					return Vec::new();
+				}
+				Some(header) => {
+					let num = header.number();
+					let canon_hash = self.block_header(BlockId::Number(num))
+						.map(|h| h.hash());
+
+					if req.max == 1 || canon_hash != Some(hash) {
+						// Non-canonical header or single header requested.
+						return vec![header];
+					}
+
+					num
+				}
+			}
+		};
+
+		(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.block_header(BlockId::Number(x)))
+			.take_while(|x| x.is_some())
+			.flat_map(|x| x)
+			.collect()
+	}
+
+	/// Get a block header by id.
+	fn block_header(&self, id: BlockId) -> Option<encoded::Header>;
+
+	/// Provide as many as possible of the requested blocks (minus the headers) encoded
+	/// in RLP format.
+	fn block_bodies(&self, req: request::Bodies) -> Vec<Option<encoded::Body>> {
+		req.block_hashes.into_iter()
+			.map(|hash| self.block_body(BlockId::Hash(hash)))
+			.collect()
+	}
+
+	/// Get a block body by id.
+	fn block_body(&self, id: BlockId) -> Option<encoded::Body>;
+
+	/// 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))
+			.map(|receipts| receipts.unwrap_or_else(|| ::rlp::EMPTY_LIST_RLP.to_vec()))
+			.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 = self.state_proof(request);
+
+			let mut stream = RlpStream::new_list(proof.len());
+			for node in proof {
+				stream.append_raw(&node, 1);
+			}
+
+			results.push(stream.out());
+		}
+
+		results
+	}
+
+	/// 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| self.contract_code(req))
+			.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.into_inner(), 1).begin_list(proof.len());
+
+					for node in proof {
+						stream.append_raw(&node, 1);
+					}
+
+					stream.out()
+				}
+			})
+			.collect()
+	}
+
+	/// Provide a header proof from a given Canonical Hash Trie as well as the
+	/// 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<(encoded::Header, 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<encoded::Header> {
+		BlockChainClient::block_header(self, id)
+	}
+
+	fn block_body(&self, id: BlockId) -> Option<encoded::Body> {
+		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<(encoded::Header, Vec<Bytes>)> {
+		None
+	}
+
+	fn ready_transactions(&self) -> Vec<PendingTransaction> {
+		BlockChainClient::ready_transactions(self)
+	}
+}

ethcore/light/src/types/les_request.rs

@@ -0,0 +1,197 @@
+// 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/>.
+
+//! LES request types.
+
+use util::H256;
+
+/// Either a hash or a number.
+#[derive(Debug, Clone, PartialEq, Eq)]
+#[cfg_attr(feature = "ipc", binary)]
+pub enum HashOrNumber {
+	/// Block hash variant.
+	Hash(H256),
+	/// Block number variant.
+	Number(u64),
+}
+
+impl From<H256> for HashOrNumber {
+	fn from(hash: H256) -> Self {
+		HashOrNumber::Hash(hash)
+	}
+}
+
+impl From<u64> for HashOrNumber {
+	fn from(num: u64) -> Self {
+		HashOrNumber::Number(num)
+	}
+}
+
+/// A request for block headers.
+#[derive(Debug, Clone, PartialEq, Eq)]
+#[cfg_attr(feature = "ipc", binary)]
+pub struct Headers {
+	/// Starting block number or hash.
+	pub start: HashOrNumber,
+	/// The maximum amount of headers which can be returned.
+	pub max: usize,
+	/// The amount of headers to skip between each response entry.
+	pub skip: u64,
+	/// Whether the headers should proceed in falling number from the initial block.
+	pub reverse: bool,
+}
+
+/// A request for specific block bodies.
+#[derive(Debug, Clone, PartialEq, Eq)]
+#[cfg_attr(feature = "ipc", binary)]
+pub struct Bodies {
+	/// Hashes which bodies are being requested for.
+	pub block_hashes: Vec<H256>
+}
+
+/// A request for transaction receipts.
+///
+/// This request is answered with a list of transaction receipts for each block
+/// requested.
+#[derive(Debug, Clone, PartialEq, Eq)]
+#[cfg_attr(feature = "ipc", binary)]
+pub struct Receipts {
+	/// Block hashes to return receipts for.
+	pub block_hashes: Vec<H256>,
+}
+
+/// A request for a state proof
+#[derive(Debug, Clone, PartialEq, Eq)]
+#[cfg_attr(feature = "ipc", binary)]
+pub struct StateProof {
+	/// Block hash to query state from.
+	pub block: H256,
+	/// Key of the state trie -- corresponds to account hash.
+	pub key1: H256,
+	/// Key in that account's storage trie; if empty, then the account RLP should be
+	/// returned.
+	pub key2: Option<H256>,
+	/// if greater than zero, trie nodes beyond this level may be omitted.
+	pub from_level: u32, // could even safely be u8; trie w/ 32-byte key can be at most 64-levels deep.
+}
+
+/// A request for state proofs.
+#[derive(Debug, Clone, PartialEq, Eq)]
+#[cfg_attr(feature = "ipc", binary)]
+pub struct StateProofs {
+	/// All the proof requests.
+	pub requests: Vec<StateProof>,
+}
+
+/// A request for contract code.
+#[derive(Debug, Clone, PartialEq, Eq)]
+#[cfg_attr(feature = "ipc", binary)]
+pub struct ContractCode {
+	/// Block hash
+	pub block_hash: H256,
+	/// Account key (== sha3(address))
+	pub account_key: H256,
+}
+
+/// A request for contract code.
+#[derive(Debug, Clone, PartialEq, Eq)]
+#[cfg_attr(feature = "ipc", binary)]
+pub struct ContractCodes {
+	/// Block hash and account key (== sha3(address)) pairs to fetch code for.
+	pub code_requests: Vec<ContractCode>,
+}
+
+/// A request for a header proof from the Canonical Hash Trie.
+#[derive(Debug, Clone, PartialEq, Eq)]
+#[cfg_attr(feature = "ipc", binary)]
+pub struct HeaderProof {
+	/// Number of the CHT.
+	pub cht_number: u64,
+	/// Block number requested.
+	pub block_number: u64,
+	/// If greater than zero, trie nodes beyond this level may be omitted.
+	pub from_level: u32,
+}
+
+/// A request for header proofs from the CHT.
+#[derive(Debug, Clone, PartialEq, Eq)]
+#[cfg_attr(feature = "ipc", binary)]
+pub struct HeaderProofs {
+	/// All the proof requests.
+	pub requests: Vec<HeaderProof>,
+}
+
+/// Kinds of requests.
+#[derive(Debug, Clone, Copy, PartialEq, Eq)]
+#[cfg_attr(feature = "ipc", binary)]
+pub enum Kind {
+	/// Requesting headers.
+	Headers,
+	/// Requesting block bodies.
+	Bodies,
+	/// Requesting transaction receipts.
+	Receipts,
+	/// Requesting proofs of state trie nodes.
+	StateProofs,
+	/// Requesting contract code by hash.
+	Codes,
+	/// Requesting header proofs (from the CHT).
+	HeaderProofs,
+}
+
+/// Encompasses all possible types of requests in a single structure.
+#[derive(Debug, Clone, PartialEq, Eq)]
+#[cfg_attr(feature = "ipc", binary)]
+pub enum Request {
+	/// Requesting headers.
+	Headers(Headers),
+	/// Requesting block bodies.
+	Bodies(Bodies),
+	/// Requesting transaction receipts.
+	Receipts(Receipts),
+	/// Requesting state proofs.
+	StateProofs(StateProofs),
+	/// Requesting contract codes.
+	Codes(ContractCodes),
+	/// Requesting header proofs.
+	HeaderProofs(HeaderProofs),
+}
+
+impl Request {
+	/// Get the kind of request this is.
+	pub fn kind(&self) -> Kind {
+		match *self {
+			Request::Headers(_) => Kind::Headers,
+			Request::Bodies(_) => Kind::Bodies,
+			Request::Receipts(_) => Kind::Receipts,
+			Request::StateProofs(_) => Kind::StateProofs,
+			Request::Codes(_) => Kind::Codes,
+			Request::HeaderProofs(_) => Kind::HeaderProofs,
+		}
+	}
+
+	/// Get the amount of requests being made.
+	pub fn amount(&self) -> usize {
+		match *self {
+			Request::Headers(ref req) => req.max,
+			Request::Bodies(ref req) => req.block_hashes.len(),
+			Request::Receipts(ref req) => req.block_hashes.len(),
+			Request::StateProofs(ref req) => req.requests.len(),
+			Request::Codes(ref req) => req.code_requests.len(),
+			Request::HeaderProofs(ref req) => req.requests.len(),
+		}
+	}
+}