tcpserver/client

#!/usr/bin/python

import sys
import socket

PORT = int(sys.argv[1])
HOST = ''

try:
    serversocket = socket.socket( socket.AF_INET, socket.SOCK_STREAM)
    serversocket.bind ( (HOST, PORT) )
    serversocket.listen(2)
    serversocket, addr = serversocket.accept()
    while True:
        print "Waiting for connection"
        print "Connected from:", addr
        msg = serversock.recv(1024)
        serversocket.send(msg)
        serversocket.close()

except:
    try:
        s = socket.socket( socket.AF_INET, socket.SOCK_STREAM)
        HOST = ''
        PORT = int(sys.argv[1])
        s.connect((HOST, PORT))

        while True:
            msg1 = s.recv(1024)
            s.send(msg1)
#        s.close()
    except:
        print "error"