Fix Go get Failures When Installing Gin

1.Problem description

Go get 出现超时问题：“golang unrecognized import path "golang.org/x/net   unrecognized import path "golang.org/x/sys"  Unknown SSL protocol error in connection to gopkg.in:443 "”

2.Solutions

Online solution one: download manually

mkdir $GOPATH/src/golang.org/x
cd $GOPATH/src/golang.org/x
git clone [email protected]:golang/text.git

Solution two: configure a proxy

export http_proxy=https://proxyAddress:port
export https_proxy=https://proxyAddress:port

3.Best solution

Go Mod is supported from Go 1.11, with a package-download solution using https://goproxy.io/ as a direct download proxy. Official setup:
macos/linux

export GO111MODULE=on 
export GOPROXY=https://goproxy.io

On Windows, configure with PowerShell (enter this for the currently configured GOPATH)

$env:GO111MODULE="on"
$env:GOPROXY="https://goproxy.io"

go-gin-golang

Include quotes here; otherwise on or the address causes an error. After this, Go get and other commands worked smoothly.

Notice： If your Go version is >=1.13, use

go env -w GOPROXY=https://goproxy.io,direct
go env -w GOPRIVATE=*.corp.example.com

Gin successfully installed with Go and managed with Go mod

Install Gin with Go

References: https://goproxy.io/ Resolve go get golang.org/x package failures in one step