Release 1.6

Please see the notes for the previous releases here: https://github.com/grpc/grpc/releases. Also please see http://grpc.io/ for all information regarding this product.

This is the 1.6 release of gRPC

General

• License changed to Apache v2 (for compliance reasons as gRPC has been donated to CNCF)
• Bump Protobuf to v3.4.0

C-core

• Fix a thread safety bug in chttp2_transport
• Add tags to anonymous structs and unions (makes FFI bindings easier)
• Prevent fd_orphan from calling shutdown(fd) when release_fd is true
• Improvements to grpc_byte_stream API and handling.
• In-process transport
• Flow Control improvements (I, II)

C++:

• cmake is now the recommended way to build on Windows. Pre-generated Visual Studio projects have been deprecated #11462

Python:

• Bug fixes

Ruby:

• Improved error handling for bidi streaming RPCs

  • PRs: #11963 and #10636

PHP:

• Added support for php_namespace option in codegen plugin #11886

C#:

• User handlers don't run on Grpc's thread pool anymore for extra safety. #11930, #12176
• API: RpcException now exposes "Trailers" property #12120
• API: added GrpcEnviroment.ShuttingDown event #12099
• General code cleanup #12127

Objective-c:

• Queues in GRXBufferedPipe is now managed by GCD (#11070, #11982)
• Fixed multiple memory leak problem (#11991, #12041)
• Fixed warnings (#11893)

Node:

• Fix a segfault when the user passes in a status with incorrect types. #12003
• Change how a deprecation warning is emitted #12004