Python写的Socks5协议代理服务器

#!/usr/bin/python 
# Filename s5.py 
# Python Dynamic Socks5 Proxy 
# Usage: python s5.py 1080 
# Background Run: nohup python s5.py 1080 & 

import socket, sys, select, SocketServer, struct, time 

class ThreadingTCPServer(SocketServer.ThreadingMixIn, SocketServer.TCPServer): pass
class Socks5Server(SocketServer.StreamRequestHandler): 
  def handle_tcp(self, sock, remote): 
    fdset = [sock, remote] 
    while True: 
      r, w, e = select.select(fdset, [], []) 
      if sock in r: 
        if remote.send(sock.recv(4096))  H', self.rfile.read(2)) 
      reply = "\x05\x00\x00\x01" 
      try: 
        if mode == 1: # 1. Tcp connect 
          remote = socket.socket(socket.AF_INET, socket.SOCK_STREAM) 
          remote.connect((addr, port[0])) 
          pass # print 'To', addr, port[0] nothing do to. 
        else: 
          reply = "\x05\x07\x00\x01" # Command not supported 
        local = remote.getsockname() 
        reply += socket.inet_aton(local[0]) + struct.pack(">H", local[1])
      except socket.error: 
        # Connection refused 
        reply = '\x05\x05\x00\x01\x00\x00\x00\x00\x00\x00' 
      sock.send(reply) 
      # 3. Transfering 
      if reply[1] == '\x00': # Success 
        if mode == 1:  # 1. Tcp connect 
          self.handle_tcp(sock, remote) 
    except socket.error: 
      pass #print 'error' nothing to do . 
    except IndexError: 
      pass 
def main(): 
  filename = sys.argv[0]; 
  if len(sys.argv) 

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