gRPC Core 1.34.0 Release Highlights

gRPC Core version 1.34.0 has been released; see grpc.io for full documentation. This release includes a range of improvements and bug fixes, summarized below.

Core

Use the environment variable GRPC_XDS_EXPERIMENTAL_SECURITY_SUPPORT to protect xDS security code. (#24782)

Add support for the unix-abstract: URI to enable abstract Unix domain sockets. (#24500)

Incremental indexing when parsing non‑vertical SAN fields. (#24601)

Revert deprecation of GRPC_ARG_HTTP2_MIN_SENT_PING_INTERVAL_WITHOUT_DATA_MS . (#24518)

xDS: set status code to INVALID_ARGUMENT when NACKing. (#24516)

Include stddef.h in address_sorting.h . (#24514)

xDS: add support for the case_sensitive option in RouteMatch . (#24381)

Remove the Android NDK r12b TLS workaround. (#24283)

C++

Fix build when defining grpc_no_xds = true . (#24503)

Experimental support and tests for CreateCustomInsecureChannelWithInterceptorsFromFd . (#24362)

C#

Fix native library loading for C# in .NET 5 single‑file applications (back‑ported to v1.34.x). (#24853)

Set RID for Grpc.Core‑specific native dependencies. (#24766)

Improve PlatformApis checks to detect Unity. (#24714)

Fix removal of libc-dev requirement on .NET 5 or later. (#24485)

C#: Move mobile support to the Grpc.Core.Xamarin package, simplifying the Grpc.Core NuGet. (#24380)

C#: Drop support for 32‑bit runtimes on Linux and macOS. (#24378)

Optimize updates to the C# HelloworldXamarin sample. (#24425)

Objective‑C

Support Swift Package Manager for grpc-core and grpc-cpp . (#24571)

Add transport information to the grpc-objc user‑agent. (#24253)

Upgrade iOS and macOS to the latest versions. (#24282)

PHP

Add PHP 8 support in the PECL extension. (#24621)

Deprecate PHP 5 support in the PECL extension. (#24353)

Python

Make setuptools a dependency of grpcio_tools . (#24752)

Stop spam logs generated by Ctrl‑C for AsyncIO servers. (#24718)

Allow runtime Protos to use well‑known types. (#24478)

Upgrade MACOSX_DEPLOYMENT_TARGET to 10.10. (#24480)

Make Python 2 an optional dependency for Bazel builds. (#24407)

Linux and macOS now support pre‑compiled Python 3.9 wheels. (#24356)

Ruby

Upgrade MACOSX_DEPLOYMENT_TARGET to 10.10. (#24479)