#! /usr/bin/python2.7 # Python implementation of an 'echo' tcp server: echo all data it receives. # # This is the simplest possible server, servicing a single request only. import sys from socket import * # The standard echo port isn't very useful, it requires root permissions! # ECHO_PORT = 7 ECHO_PORT = 50000 + 7 BUFSIZE = 1024 def main(): if len(sys.argv) > 1: port = int(eval(sys.argv[1])) else: port = ECHO_PORT s = socket(AF_INET, SOCK_STREAM) s.bind(('', port)) s.listen(1) conn, (remotehost, remoteport) = s.accept() print 'connected by', remotehost, remoteport while 1: data = conn.recv(BUFSIZE) if not data: break conn.send(data) main()