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最新推荐文章于 2025-05-20 12:02:10 发布

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文章标签： http python 网络协议网络开发语言

本文链接：https://blog.youkuaiyun.com/qq_42519695/article/details/128611805

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本文介绍了一种在Python中实现网络端口转发和重定向的方法。通过创建PipeThread类来建立两个socket之间的数据传输通道，并利用Pinhole类监听指定端口并将连接转发到目标地址。适用于Python 2和Python 3。

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#encoding=utf8
#author: walker摘自《Python Cookbook(2rd)》
#date: 2015-06-11
#function: 网络端口的转发和重定向(适用于python2/python3)
import sys, socket, time, threading
LOGGING = True
loglock = threading.Lock()
#打印日志到标准输出
def log(s, *a):
  if LOGGING:
    loglock.acquire()
    try:
      print('%s:%s' % (time.ctime(), (s % a)))
      sys.stdout.flush()
    finally:
      loglock.release()
class PipeThread(threading.Thread):
  pipes = []   #静态成员变量，存储通讯的线程编号
  pipeslock = threading.Lock()
  def __init__(self, source, sink):
    #Thread.__init__(self) #python2.2之前版本适用
    super(PipeThread, self).__init__()
    self.source = source
    self.sink = sink
    log('Creating new pipe thread %s (%s -> %s)',
        self, source.getpeername(), sink.getpeername())
    self.pipeslock.acquire()
    try:
      self.pipes.append(self)
    finally:
      self.pipeslock.release()
    self.pipeslock.acquire()
    try:
      pipes_now = len(self.pipes)
    finally:
      self.pipeslock.release()
    log('%s pipes now active', pipes_now)
  def run(self):
    while True:
      try:
        data = self.source.recv(1024)
        if not data:
          break
        self.sink.send(data)
      except:
        break
    log('%s terminating', self)
    self.pipeslock.acquire()
    try:
      self.pipes.remove(self)
    finally:
      self.pipeslock.release()
    self.pipeslock.acquire()
    try:
      pipes_left = len(self.pipes)
    finally:
      self.pipeslock.release()
    log('%s pipes still active', pipes_left)
class Pinhole(threading.Thread):
  def __init__(self, port, newhost, newport):
    #Thread.__init__(self) #python2.2之前版本适用
    super(Pinhole, self).__init__()
    log('Redirecting: localhost: %s->%s:%s', port, newhost, newport)
    self.newhost = newhost
    self.newport = newport
    self.sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    self.sock.bind(('', port))
    self.sock.listen(5) #参数为timeout，单位为秒
  def run(self):
    while True:
      newsock, address = self.sock.accept()
      log('Creating new session for %s:%s', *address)
      fwd = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
      fwd.connect((self.newhost, self.newport))
      PipeThread(newsock, fwd).start() #正向传送
      PipeThread(fwd, newsock).start() #逆向传送
if __name__ == '__main__':
  print('Starting Pinhole port fowarder/redirector')
  try:
    port = 8631
    newhost = "192.168.40.24"
    try:
      newport = 8630
    except IndexError:
      newport = port
  except (ValueError, IndexError):
    print('Usage: %s port newhost [newport]' % sys.argv[0])
    sys.exit(1)
  #sys.stdout = open('pinhole.log', 'w') #将日志写入文件
  print(f" local port :{port} recity to {newhost}:{newport}  ")
  Pinhole(port, newhost, newport).start()

　可以将本地的某个端口映射到某台服务器的端口可以做代理转发使用