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#!/usr/bin/env python | |
# coding: utf-8 | |
# http://musta.sh/2012-03-04/twisted-tcp-proxy.html | |
import sys | |
from twisted.internet import defer | |
from twisted.internet import protocol | |
from twisted.internet import reactor | |
from twisted.python import log | |
class ProxyClientProtocol(protocol.Protocol): | |
def connectionMade(self): | |
log.msg("Client: connected to peer") | |
self.cli_queue = self.factory.cli_queue | |
self.cli_queue.get().addCallback(self.serverDataReceived) | |
def serverDataReceived(self, chunk): | |
if chunk is False: | |
self.cli_queue = None | |
log.msg("Client: disconnecting from peer") | |
self.factory.continueTrying = False | |
self.transport.loseConnection() | |
elif self.cli_queue: | |
log.msg("Client: writing %d bytes to peer" % len(chunk)) | |
self.transport.write(chunk) | |
self.cli_queue.get().addCallback(self.serverDataReceived) | |
else: | |
self.factory.cli_queue.put(chunk) | |
def dataReceived(self, chunk): | |
log.msg("Client: %d bytes received from peer" % len(chunk)) | |
self.factory.srv_queue.put(chunk) | |
def connectionLost(self, why): | |
if self.cli_queue: | |
self.cli_queue = None | |
log.msg("Client: peer disconnected unexpectedly") | |
class ProxyClientFactory(protocol.ReconnectingClientFactory): | |
maxDelay = 10 | |
continueTrying = True | |
protocol = ProxyClientProtocol | |
def __init__(self, srv_queue, cli_queue): | |
self.srv_queue = srv_queue | |
self.cli_queue = cli_queue | |
class ProxyServer(protocol.Protocol): | |
def connectionMade(self): | |
self.srv_queue = defer.DeferredQueue() | |
self.cli_queue = defer.DeferredQueue() | |
self.srv_queue.get().addCallback(self.clientDataReceived) | |
factory = ProxyClientFactory(self.srv_queue, self.cli_queue) | |
reactor.connectTCP("127.0.0.1", 6666, factory) | |
def clientDataReceived(self, chunk): | |
log.msg("Server: writing %d bytes to original client" % len(chunk)) | |
self.transport.write(chunk) | |
self.srv_queue.get().addCallback(self.clientDataReceived) | |
def dataReceived(self, chunk): | |
log.msg("Server: %d bytes received" % len(chunk)) | |
self.cli_queue.put(chunk) | |
def connectionLost(self, why): | |
self.cli_queue.put(False) | |
if __name__ == "__main__": | |
log.startLogging(sys.stdout) | |
factory = protocol.Factory() | |
factory.protocol = ProxyServer | |
reactor.listenTCP(9999, factory, interface="0.0.0.0") | |
reactor.run() |
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