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The Go language implementation of gRPC. HTTP/2 based RPC


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The Go implementation of gRPC: A high performance, opensource, general RPC framework that puts mobile and HTTP/2 first. For moreinformation see the gRPC Quick Start:Go guide.


To install this package, you need to install Go and setup your Go workspace onyour computer. The simplest way to install the library is to run:

$ go get -u

With Go module support (Go 1.11+), simply import "" inyour source code and go [build|run|test] will automatically download thenecessary dependencies (Go modulesref).

If you are trying to access grpc-go from within China, please see theFAQ below.


gRPC-Go requires Go 1.9 or later.



Performance benchmark data for grpc-go and other languages is maintained inthisdashboard.


General Availability Google Cloud Platform LaunchStages.


I/O Timeout Errors

The domain may be blocked from some countries. go get usuallyproduces an error like the following when this happens:

$ go get -u unrecognized import path "" (https fetch: Get dial tcp i/o timeout)

To build Go code, there are several options:

  • Set up a VPN and access through that.

  • Without Go module support: git clone the repo manually:

    git clone $GOPATH/src/

    You will need to do the same for all of grpc’s dependencies in,e.g.

  • With Go module support: it is possible to use the replace feature of gomod to create aliases for packages. In your project’s directory:

    go mod edit mod tidygo mod vendorgo build -mod=vendor

    Again, this will need to be done for all transitive dependencies hosted as well. Please refer to thisissue in the golang repo regardingthis concern.

Compiling error, undefined: grpc.SupportPackageIsVersion

Please update proto package, gRPC package and rebuild the proto files: – go get -u{proto,protoc-gen-go}go get -u --go_out=plugins=grpc:. *.proto

How to turn on logging

The default logger is controlled by the environment variables. Turn everythingon by setting:


The RPC failed with error "code = Unavailable desc = transport is closing"

This error means the connection the RPC is using was closed, and there are manypossible reasons, including: 1. mis-configured transport credentials, connection failed on handshaking 1. bytes disrupted, possibly by a proxy in between 1. server shutdown

It can be tricky to debug this because the error happens on the client side butthe root cause of the connection being closed is on the server side. Turn onlogging on both client and server, and see if there are any transporterrors.

To restore the repository download the bundle


and run:

 git clone grpc-grpc-go_-_2019-11-27_23-11-49.bundle 

Uploader: grpc
Upload date: 2019-11-27