The C based gRPC (C++, Python, Ruby, Objective-C, PHP, C#)

What's New

Release v1.37.0


This is release 1.37.0 (gilded) of gRPC Core.

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

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


  • Bump up minimum supported clang to 4.0. (#25443)
  • Use URI form of address for channelz listen node. (#25785)
  • Implementation CSDS (xDS Config Dump). (#25038)
  • Don't assume that c-ares won't retry failed writes in grpc_core::GrpcPolledFdWindows::SendVUDP. (#25726)
  • Fix an infinite read loop with SRV record resolution on windows. (#25672)
  • xDS status notifier. (#25321)
  • Remove CAS loops in global subchannel pool and simplify subchannel refcounting. (#25485)
  • Add missing security field to channelz Socket. (#25593)
  • Disable check_call_host when server_verification_option is not GRPC_TLS_SERVER_VERIFICATION. (#25577)


  • Remove fault injection environmental variable guard. (#25792)
  • Implement C++ Admin Interface API. (#25753)
  • cmake: Reflect minor version change in SONAME for C++ and C#. (#25617)
  • xDS Client-Side Fault Injection. (#24354)


  • [C#] Add buildTransitive directory to NuGet package. (#25385)
  • Reduce Grpc.Core nuget size by generating separate .so with/without debug symbols for grpc_csharp_ext. (#25729)
  • make Grpc C# work on aarch64 linux. (#25717)
  • Add support for additional protoc arguments in Grpc.Tools. (#25374)
  • C#: Use explicit native extension loading whenever possible. (#25490)


  • use boringssl asm optimizations in aarch64 wheel source build. (#25453)
  • Clarify Guarantees about grpc.Future Interface. (#25383)
  • Use crosscompilation to build python armv7 wheels. (#25704)
  • [Aio] Add time_remaining method to ServicerContext. (#25719)
  • Standardize all environment variable boolean configuration in python's (#25444)
  • Crosscompile python aarch64 wheels with dockcross. (#25418)
  • Fix Signal Safety Issue. (#25394)


  • Cherry-pick PR #25429 "Add ruby 3.0 support for mac binary packages" to 1.37.x. (#25869)
  • Include GRPC::GenericService from root namespace. (#25153)
  • Ruby: support for PSM security. (#25330)

gRPC - An RPC library and framework

gRPC is a modern, open source, high-performance remote procedure call (RPC) framework that can run anywhere. gRPC enables client and server applications to communicate transparently, and simplifies the building of connected systems.

Mailing List:

Join the chat at

To start using gRPC

To maximize usability, gRPC supports the standard method for adding dependencies to a user's chosen language (if there is one). In most languages, the gRPC runtime comes as a package available in a user's language package manager.

For instructions on how to use the language-specific gRPC runtime for a project, please refer to these documents

  • C++: follow the instructions under the src/cpp directory
  • C#: NuGet package Grpc
  • Dart: pub package grpc
  • Go: go get
  • Java: Use JARs from Maven Central Repository
  • Kotlin: Use JARs from Maven Central Repository
  • Node: npm install grpc
  • Objective-C: Add gRPC-ProtoRPC dependency to podspec
  • PHP: pecl install grpc
  • Python: pip install grpcio
  • Ruby: gem install grpc
  • WebJS: follow the grpc-web instructions

Per-language quickstart guides and tutorials can be found in the documentation section on the website. Code examples are available in the examples directory.

Precompiled bleeding-edge package builds of gRPC master branch's HEAD are uploaded daily to

To start developing gRPC

Contributions are welcome!

Please read How to contribute which will guide you through the entire workflow of how to build the source code, how to run the tests, and how to contribute changes to the gRPC codebase. The "How to contribute" document also contains info on how the contribution process works and contains best practices for creating contributions.


Sometimes things go wrong. Please check out the Troubleshooting guide if you are experiencing issues with gRPC.


See the Performance dashboard for performance numbers of master branch daily builds.


See gRPC Concepts

About This Repository

This repository contains source code for gRPC libraries implemented in multiple languages written on top of a shared C core library src/core.

Libraries in different languages may be in various states of development. We are seeking contributions for all of these libraries:

Language Source
Shared C [core library] src/core
C++ src/cpp
Ruby src/ruby
Python src/python
PHP src/php
C# (core library based) src/csharp
Objective-C src/objective-c
Language Source repo
Java grpc-java
Kotlin grpc-kotlin
Go grpc-go
NodeJS grpc-node
WebJS grpc-web
Dart grpc-dart
.NET (pure C# impl.) grpc-dotnet


  • Swift Tools 5.2.0
View More Packages from this Author


Last updated: Sat Jun 15 2024 11:18:24 GMT-0900 (Hawaii-Aleutian Daylight Time)