How Do I Use a Proxy with the Go Command?

Using Proxy with the Go Command: A Comprehensive Guide

When working with the Go command, you may encounter situations where you need to access the internet through a proxy. Whether you're installing the Go tour or developing Go applications, configuring your environment to support proxy usage is essential.

Environmental Variable Configuration

The Go command leverages two environment variables:

• http_proxy: Specifies the HTTP proxy settings, including user, password, host, and port (optional).
• no_proxy: Defines a comma-separated list of servers that should be excluded from proxy usage.

Source Control Manager Configuration

In addition to environmental variables, you also need to configure your source control manager (SCM) to use the proxy settings.

• Mercurial: Refer to the documentation here: https://www.mercurial-scm.org/wiki/Network
• Git: Refer to the documentation here: https://git-scm.com/book/en/v2/Git-Basics-Working-with-Remotes

CLI Execution with Proxy Settings

You can run the Go command with specific proxy configurations by setting the environment variables directly. For example, to install the Go tour using a proxy at 127.0.0.1:8080, you would execute:

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

Configuring a Permanent Alias

If you consistently use a proxy with the Go command, you can create an alias to streamline the process. For instance, the following alias will set the proxy for every go command execution:

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

By creating this alias, you can simply type go followed by the desired command without manually specifying proxy settings each time.

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