How to Create a Go SOCKS5 Client Using net/proxy?

Creating a Go SOCKS5 Client

The net/proxy documentation lacks examples for utilizing its methods. This article focuses on implementing the SOCKS5 method. The SOCKS5 method has the following signature:

func SOCKS5(network, addr string, auth *Auth, forward Dialer) (Dialer, error)

This method takes various parameters:

• network: The network to use, typically "tcp" for SOCKS5 over TCP.
• addr: The address of the SOCKS5 proxy server, in the format "hostname:port".
• auth: An optional Auth object for authentication (usually nil).
• forward: A Dialer for forwarding the connection after the initial SOCKS5 handshake (defaults to Direct, which uses the default network dialer).

Setting Up a SOCKS5 Client

To set up a SOCKS5 client in Go, follow these steps:

1. Create a Dialer for the SOCKS5 proxy using proxy.SOCKS5:

   dialSocksProxy, err := proxy.SOCKS5("tcp", "proxy_ip", nil, proxy.Direct)

2. Initialize an HTTP transport with the SOCKS5 Dialer:

   tr := &http.Transport{Dial: dialSocksProxy.Dial}

3. Create an HTTP client using the transport:

   myClient := &http.Client{
       Transport: tr,
   }

Using myClient, you can make HTTP requests through the SOCKS5 proxy.

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