How Can I Configure the Go Command to Use a Proxy?

Configuring the Go Command for Proxy Usage

Go programs can utilize HTTP proxies for internet access, but the option isn't readily available in the go install command. This issue extends beyond the go tour and affects Go development in general. Therefore, configuring Go to work seamlessly with proxies is crucial.

Environment Variables

Go programs recognize the following environment variables:

• http_proxy: The HTTP proxy address, optionally including authentication credentials and port.
• no_proxy: A comma-separated list of servers that should bypass the proxy.

Source Control Proxy Settings

Go's built-in support for source control management (SCM) requires additional proxy settings. For Mercurial, modify its configuration file to include the proxy information. For Git, define the git config parameter http.proxy.

Simple Proxy Usage

Use the export command to set the environment variables:

export http_proxy=http://user:password@host:port
export no_proxy=foo.com,bar.net:4000

Command-Specific Proxies

To limit proxy usage to specific go commands, run them with the necessary variable declaration:

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

Permanent Alias

Create a permanent alias to avoid repeatedly typing the proxy settings:

alias go='http_proxy=127.0.0.1:8080 go'

With the alias in place, you can execute Go commands normally, ensuring proxy access for all operations.

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