将本地端口转发到远程主机
#coding:utf-8 __author__ = 'similarface' import argparse import asyncore,socket LOCAL_SERVER_HOST='localhost' REMOTE_SERVER_HOST='www.23mofang.com' BUFSIZE = 4096 class PortForwarder(asyncore.dispatcher): def __init__(self,ip,port,remoteip,remoteport,backlog=5): ''' :param ip: IP :param port: 端口 :param remoteip:远程IP :param remoteport: 远程端口 :param backlog: 等待连接队列的最大长度。 :return: ''' asyncore.dispatcher.__init__(self) self.remoteip=remoteip self.remoteport=remoteport self.create_socket(socket.AF_INET,socket.SOCK_STREAM) self.set_reuse_addr() self.bind((ip,port)) self.listen(backlog) def handle_accept(self): conn,addr=self.accept() print("连接到:",addr) Sender(Receiver(conn),self.remoteip,self.remoteport) class Receiver(asyncore.dispatcher): '''接收类处理传入的客户端请求''' def __init__(self,conn): asyncore.dispatcher.__init__(self,conn) self.from_remote_buffer='' self.to_remote_buffer='' self.sender=None def handle_connect(self): pass def handle_read(self): read = self.recv(BUFSIZE) self.from_remote_buffer += read def writable(self): return (len(self.to_remote_buffer) > 0) def handle_write(self): sent = self.send(self.to_remote_buffer) self.to_remote_buffer = self.to_remote_buffer[sent:] def handle_close(self): self.close() if self.sender: self.sender.close() class Sender(asyncore.dispatcher): '''发送类接收 接收类并处理向客户发送数据''' def __init__(self, receiver, remoteaddr,remoteport): asyncore.dispatcher.__init__(self) # self.receiver=receiver receiver.sender=self self.create_socket(socket.AF_INET, socket.SOCK_STREAM) self.connect((remoteaddr, remoteport)) def handle_connect(self): pass def handle_read(self): read = self.recv(BUFSIZE) self.receiver.to_remote_buffer += read def writable(self): return (len(self.receiver.from_remote_buffer) > 0) def handle_write(self): sent = self.send(self.receiver.from_remote_buffer) self.receiver.from_remote_buffer = self.receiver.from_remote_buffer[sent:] def handle_close(self): self.close() self.receiver.close() if __name__ == "__main__": parser = argparse.ArgumentParser(description='Port forwarding example') parser.add_argument('--local-host', action="store", dest="local_host", default=LOCAL_SERVER_HOST) parser.add_argument('--local-port', action="store", dest="local_port", type=int, required=True) parser.add_argument('--remote-host', action="store", dest="remote_host", default=REMOTE_SERVER_HOST) parser.add_argument('--remote-port', action="store", dest="remote_port", type=int, default=80) given_args = parser.parse_args() local_host, remote_host = given_args.local_host, given_args.remote_host local_port, remote_port = given_args.local_port, given_args.remote_port print "Starting port forwarding local %s:%s => remote %s:%s" %(local_host, local_port, remote_host, remote_port) PortForwarder(local_host, local_port, remote_host, remote_port) asyncore.loop()
浏览器访问:http://localhost:8800 --> 会跳转到:http://www.23mofang.com