How do I configure go command to use a proxy?

Go programs understand environment variables http_proxy and no_proxy, but that's not enough because go get uses source control managers for retrieving code. So you have to set HTTP proxy settings for your SCM too. Use this for Mercurial and this for Git.

http_proxy value can be like http://user:password@host:port/. User, password, and port parts are optional. no_proxy is a comma-separated list of servers that should not be connected through proxy. Its value can be like foo.com,bar.net:4000.

You can set these environment variables in your bash_profile, but if you want to limit their usage to go, you can run it like this:

$ http_proxy=127.0.0.1:8080 go get code.google.com/p/go.crypto/bcrypt

If that's what you always want, set this alias to avoid typing proxy part every time:

$ alias go='http_proxy=127.0.0.1:8080 go'

From now on you can use go normally, but it uses your HTTP proxy.

On Windows command line:

set http_proxy=http://[user]:[pass]@[proxy_ip]:[proxy_port]/ set https_proxy=http://[user]:[pass]@[proxy_ip]:[proxy_port]/

...then navigate to https://github.com/ and download the GitHub certificate (I set the name as goland_cert.cer)

...now execute the OpenSSL command to export this to PEM format

openssl x509 -inform der -in goland_cert.cer -out goland_cert.pem

...finally set the certificate in git global config

git config --global http.sslCAInfo C:/Users/[User]/certs/golang_cert.pem