vendor/golang.org/x/net/proxy/socks5.go

   1 // Copyright 2011 The Go Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style
   3 // license that can be found in the LICENSE file.
   4
   5 package proxy
   6
   7 import (
   8         "context"
   9         "net"
  10
  11         "golang.org/x/net/internal/socks"
  12 )
  13
  14 // SOCKS5 returns a Dialer that makes SOCKSv5 connections to the given
  15 // address with an optional username and password.
  16 // See RFC 1928 and RFC 1929.
  17 func SOCKS5(network, address string, auth *Auth, forward Dialer) (Dialer, error) {
  18         d := socks.NewDialer(network, address)
  19         if forward != nil {
  20                 d.ProxyDial = func(_ context.Context, network string, address string) (net.Conn, error) {
  21                         return forward.Dial(network, address)
  22                 }
  23         }
  24         if auth != nil {
  25                 up := socks.UsernamePassword{
  26                         Username: auth.User,
  27                         Password: auth.Password,
  28                 }
  29                 d.AuthMethods = []socks.AuthMethod{
  30                         socks.AuthMethodNotRequired,
  31                         socks.AuthMethodUsernamePassword,
  32                 }
  33                 d.Authenticate = up.Authenticate
  34         }
  35         return d, nil
  36 }