Try to download QUIC SDK. (#876)

When the environment variable is correctly set, it'll download the pre-built QUIC SDK. It's only available on CI machine at this time. But developers can build it from source code.

Author: jianjunz

scripts/installCommonDeps.sh

@@ -299,13 +299,32 @@ install_licode(){
 }
 
 install_quic(){
+  # QUIC IO
   rm $ROOT/third_party/quic-lib -rf
   mkdir $ROOT/third_party/quic-lib
 
   pushd ${ROOT}/third_party/quic-lib
   wget https://github.com/open-webrtc-toolkit/owt-deps-quic/releases/download/v0.1/dist.tgz
   tar xzf dist.tgz
   popd
+
+  # QUIC transport
+  local QUIC_SDK_VERSION=`cat ${ROOT}/source/agent/addons/quic/quic_sdk_version`
+  local QUIC_TRANSPORT_PATH=${ROOT}/third_party/quic-transport
+  if [ -d ${QUIC_TRANSPORT_PATH} ]; then
+    rm -r ${QUIC_TRANSPORT_PATH}
+  fi
+  mkdir ${QUIC_TRANSPORT_PATH}
+  pushd ${QUIC_TRANSPORT_PATH}
+  wget ${QUIC_TRANSPORT_PACKAGE_URL_PREFIX}/linux/${QUIC_SDK_VERSION}.zip
+  if [ $? -eq 0 ]; then
+    unzip ${QUIC_SDK_VERSION}.zip
+    rm ${QUIC_SDK_VERSION}.zip
+    cp bin/release/libowt_quic_transport.so ${ROOT}/build/libdeps/build/lib
+  else
+    read -p "Failed to download prebuild QUIC SDK. Please download and compile QUIC SDK version ${QUIC_SDK_VERSION} from https://github.com/open-webrtc-toolkit/owt-deps-quic."
+  fi
+  popd
 }
 
 install_nicer(){

source/agent/addons/quic/quic_sdk_version

@@ -0,0 +1 @@
+67301606083eec702fbbe12c768b56948b419c01