This is the 1.16.0 release (gao) of gRPC Core.
Please see the notes for the previous releases here: https://github.com/grpc/grpc/releases. Please consult https://grpc.io/ for all information regarding this product.
This release contains refinements, improvements, and bug fixes, with highlights listed below.
Core
- Keepalive watchdog firing should return status
UNAVAILABLE. (#16764) - Set
TCP_USER_TIMEOUTsocket option for linux . (#16419) - When using c-ares, resolve ip literals and Windows localhost on our own. (#16420)
- Turn loading system root certificate as default. (#16536)
- Change pick_first to not unref unselected subchannels. (#16342)
C++
- fix *_unsecure.pc files. (#16754)
- cmake: prevent C core from depending on libstdc++. (#16752)
- Implement Watch method in health check service. (#16574)
- Fix async_stream.h warning on Visual Studio. (#16544)
C#
- Secure channel throughput improvements: Linux x86_64 version of grpc_csharp_ext nuget now ships with assembly-optimized version of boringssl, which leads to significant improvements in throughput of secure C# channels. See https://github.com/grpc/grpc/blob/v1.16.x/doc/ssl-performance.md for details.
- Expose certificate request type in
SslServerCredentials. (#16552) - build assembly-optimized grpc_csharp_ext with cmake. (#16777)
- ChannelOption improvements. (#16756)
- Various allocation optimizations. (#16631)
- Add new C# serialization API. (#16367)
- Add constructor overload for
RpcException. (#16553) - Avoid leaking resources when starting a call fails. (#16554)
- Expose
TryWaitForStateChangedAsync. (#16556) - Add exception info to
Status.Detailif metadata credentials throws. (#16543)
Objective-C
- Fixed a crash related to error reporting. (#16696)
Python
- Fix SSL channel credential when an argument is None. (#16640)
- Bazel: Fix python BUILD rules. (#16561)