gRPC 1.17.0 发布，谷歌开源的高性能 RPC 框架

gRPC 1.17.0 已发布，包含优化、改进和错误修复，更新如下：

Core

Add support for LB config in service config. (#17063)
Don't reset channel state on resolver failure when LB policy exists. (#17226)
Avoid re-resolution after c-ares resolver has been shut down. (#17204)
Enable SO_REUSEADDR in client sockets. (#17193)
Remove memset(0) from arena allocate memory. (#16944)
Account the memory usage of channel and call by resource quota. (#16823)
Client side health checking feature. (#16507)
Fail wait_for_ready=false RPCs when channel is in TRANSIENT_FAILURE. (#16912)
Fix a dangling pointer on ares_request object in case of cancellation. (#16913)
Fix corruption of ares blocking_resolve_address when grpc is restarted. (#16917)
Fix the issue where a random fd will be closed when error occurs during creating eventfd. (#10859)
Enable Channelz by default. (#16819)
Remove grpc_use_signal from API, as no longer relevant. (#16706)
Fix deadlock issue in HTTP2 connector. (#16979)

C++

Avoid c-ares dependency on libnsl. (#17271)
Switch C# to contextual serializer and deserializer internally. (#17167)
Add BindService() method that works with alternative serving stacks. (#17157)
Document .NET build integration with Grpc.Tools. (#15754)
Integrate Grpc.Tools into msbuild system (C# only). (#13207)
Use Ninja to build grpc_csharp_ext windows artifact (assembly-optimized secure channels in C# on windows). (#16780)

PHP

Python

Update Python documentation. (#17194)
Migrate tests from Python 3.4 to Python 3.7. (#16995)
Add wait-for-ready option. (#16919)
The new gRPC Python documentation generator. (#17074)
Allow gpr compatibility mode to be disabled in the Python build. (#16916)
Fix logging issues introduced due to root logger being configured by gRPC. (#17091)
Add support for utf-8 error messages. (#16946)
Ensure libboringssl.a is always built for Python. (#17049)
Add python example to show the use of channel options. (#16924)
Add type checking for channel args. (#16864)
Strip manylinux1 binary wheels. (#16836)

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