python socket

import socket

s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.bind(('127.0.0.1', 8001))
s.listen(2)
while 1:
    conn, addr = s.accept()
    print 'connected by', addr
    conn.sendall('response\n')
    while 1:
        data = conn.recv(1024)
        if not data:  # client stop connection
            break
        print 'receive %s' % data
        conn.sendall('resping')
    print 'conn close'
    conn.close()
s.close()