直接上代码：

#!/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)) <= 0: break

if remote in r:

if sock.send(remote.recv(4096)) <= 0: break

def handle(self):

try:

pass # print 'from ', self.client_address nothing to do.

sock = self.connection

# 1. Version

sock.recv(262)

sock.send("\x05\x00");

# 2. Request

data = self.rfile.read(4)

mode = ord(data[1])

addrtype = ord(data[3])

if addrtype == 1: # IPv4

addr = socket.inet_ntoa(self.rfile.read(4))

elif addrtype == 3: # Domain name

addr = self.rfile.read(ord(sock.recv(1)[0]))

port = struct.unpack('>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)<2:

print 'usage: ' + filename + ' port'

sys.exit()

socks_port = int(sys.argv[1]);

server = ThreadingTCPServer(('', socks_port), Socks5Server)

print 'bind port: %d' % socks_port + ' ok!'

server.serve_forever()

if __name__ == '__main__':

main()