source: code/trunk/vendor/github.com/valyala/fasthttp/fasthttpproxy/socks5.go@ 145

package fasthttpproxy

import (
        "net"
        "net/url"

        "github.com/valyala/fasthttp"
        "golang.org/x/net/proxy"
)

// FasthttpSocksDialer returns a fasthttp.DialFunc that dials using
// the provided SOCKS5 proxy.
//
// Example usage:
//      c := &fasthttp.Client{
//              Dial: fasthttpproxy.FasthttpSocksDialer("socks5://localhost:9050"),
//      }
func FasthttpSocksDialer(proxyAddr string) fasthttp.DialFunc {
        var (
                u      *url.URL
                err    error
                dialer proxy.Dialer
        )
        if u, err = url.Parse(proxyAddr); err == nil {
                dialer, err = proxy.FromURL(u, proxy.Direct)
        }
        // It would be nice if we could return the error here. But we can't
        // change our API so just keep returning it in the returned Dial function.
        // Besides the implementation of proxy.SOCKS5() at the time of writing this
        // will always return nil as error.

        return func(addr string) (net.Conn, error) {
                if err != nil {
                        return nil, err
                }
                return dialer.Dial("tcp", addr)
        }
}