Development Release 0.10.0

Release 0.10.0

Please see the notes for the previous releases here: https://github.com/grpc/grpc/releases

Development release of github.com/grpc/grpc.

c-core:

• Removed the backup poller.
• Now exports dependency information for pkg-config.
• Close file descriptors when they are no longer in use on POSIX based systems.
• Client configuration infrastructure implemented.
• Miscellaneous stability bug fixes.
• JWT verifier library (without caching for now).
• HTTP2 transport can now parse and write concurrently.
• Fixed memory leak on Windows (#2125).
• ALPN is no longer a mandatory feature, meaning that OpenSSL 1.0.1 is now the lowest required version.

cpp:

• Status API update.
• Support raw access token credentials.
• Support register service to a host.
• Support metadata in grpc_cli tool.
• C++ library can be compiled without protobuf.
• Adding support for AuthContext both client and server side.

python:

• #1558 Raises batching semantics from the C API layer into Python.
• #2249 Fixes initial metadata being sent with terminal metadata from the server.
• #2034 Ensures C89 compatibility for the C API layer.

php:

• Alpha Release version 0.5.1.
• Released as Packagist package and PECL extension.
• Simple homebrew/linuxbrew installation.
• Hello World and Route Guide tutorials.
• #2222 Fixes PHP extension bug on MacOS.

csharp:

• Rewrote and simplified API for channel options (formerly channel args).
• Stopped using PInvoke native-to-managed callbacks in most cases (performance boost + simplicity).
• Added host and port constructor overload for new channels (#1992).
• Replaced Microsoft.Bcl.Immutable NuGet dependency by System.Collections.Immutable.
• Better stability on Linux.

objective-c:

• Trailing metadata support.
• Metadata API surface simplified.
• Bazel support.
• Changed some function and parameter names in code generator and runtime libraries.