github.com-grpc-grpc-go_-_2019-11-27_23-11-49

github.com-grpc-grpc-go_-_2019-11-27_23-11-49

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

gRPC-Go

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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.

Installation

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 google.golang.org/grpc

With Go module support (Go 1.11+), simply import "google.golang.org/grpc" 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.

Prerequisites

gRPC-Go requires Go 1.9 or later.

Documentation

Performance

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

Status

General Availability Google Cloud Platform LaunchStages.

FAQ

I/O Timeout Errors

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

$ go get -u google.golang.org/grpcpackage google.golang.org/grpc: unrecognized import path "google.golang.org/grpc" (https fetch: Get https://google.golang.org/grpc?go-get=1: dial tcp 216.239.37.1:443: i/o timeout)

To build Go code, there are several options:

  • Set up a VPN and access google.golang.org through that.

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

    git clone https://github.com/grpc/grpc-go.git $GOPATH/src/google.golang.org/grpc

    You will need to do the same for all of grpc’s dependencies in golang.org,e.g. golang.org/x/net.

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

    go mod edit -replace=google.golang.org/grpc=github.com/grpc/grpc-go@latestgo mod tidygo mod vendorgo build -mod=vendor

    Again, this will need to be done for all transitive dependencies hosted ongolang.org 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 github.com/golang/protobuf/{proto,protoc-gen-go}go get -u google.golang.org/grpcprotoc --go_out=plugins=grpc:. *.proto

How to turn on logging

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

GRPC_GO_LOG_VERBOSITY_LEVEL=99 GRPC_GO_LOG_SEVERITY_LEVEL=info

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

wget https://archive.org/download/github.com-grpc-grpc-go_-_2019-11-27_23-11-49/grpc-grpc-go_-_2019-11-27_23-11-49.bundle

and run:

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

Source: https://github.com/grpc/grpc-go
Uploader: grpc
Upload date: 2019-11-27