gRPC - v1.63.0

This is release 1.63.0 (giggle) of gRPC Core.

For gRPC documentation, see grpc.io. For previous releases, see Releases.

This release contains refinements, improvements, and bug fixes, with highlights listed below.

Core

• [Deps] Backport: Protobuf upgrade to v26.1. (#36353)
• [OTel C++] Add experimental optional locality label available to client per-attempt metrics. (#36254)
• [surface] Add an API to inject connected endpoints into servers. (#35957)
• [CMake] Add gRPC_USE_SYSTEMD option. (#34384)
• [OTel C++] Add API to set channel scope filter. (#36189)
• [Deps] Upgraded protobuf to v26.1. (#35796)
• [channel] canonify target and set channel arg in only one place. (#36134)
• [grpc][Gpr_To_Absl_Logging] Using absl from within gpr logging. (#36108)
• [BoringSSL] Update third_party/boringssl-with-bazel. (#36089)
• [EventEngine] Document RunAfter can return an invalid handle for immediate execution. (#36072)
• [EventEngine] Enable the EventEngine DNS Resolver on Posix. (#35573)
• [EventEngine] Support AF_UNIX for windows. (#34801)

C++

• [OTel C++] Add APIs to enable/disable metrics. (#36183)
• [EventEngine] Refactor ServerCallbackCall to use EventEngine::Run. (#36126)
• [OTel C++] Add CMake build support. (#36063)
• gRPC C++ upgraded Protobuf to v26.1. (#36323)

C#

• [csharp] Fix csharp doc comments. (#36000)
• C#: Grpc.Tools: Handle regex timeout when parsing protoc output. (#36185)

PHP

• Update min PHP testing version from PHP 7.4 to 8.1. (#35964)

Python

• [Python Version] Drop support for Python 3.7. (#34450)
• [Python Aio] Change aio Metadata inheritance. (#36214)
• [Documentation] fix asyncio Server and Channel stop() method documentation. (#35946)
• [Python O11y] Change public interface. (#36094)
• [Python Stub] Add version check to stubs generated by grpcio_tools. (#35906)
• [AbortError] Reapply "[AbortError] And and check AbortError while abort". (#34525)
• [Build Reproducibility] Sort input file list. (#35687)
• [Python O11Y] Reapply registered method change. (#35850)
• [Python Modernization] Deprecate pkg_resources. (#35849)
• [Python Bazel] Allow overwriting grpc_library in python_rules.bzl. (#35629)

Ruby

• ruby: register grpc_rb_sStatus as a global variable. (#36125)