#!/usr/bin/python

import time, socket, threading

# thread handle function
def tcplink(sock, addr):
  print 'Accept new connection from %s:%s...' % addr
  sock.send('Welcome!')
  while True:
    data = sock.recv(1024)
    time.sleep(1)
    if data == 'exit' or not data:
      break
    sock.send('Hello, %s!' % data)
  sock.close()
  print 'Connection from %s:%s closed.' % addr

# create socket object
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
# listen port
s.bind(('127.0.0.1', 9999))
# start listen
s.listen(5)
# print prompt
print 'Waiting for connection...'

while True:
  # accept a new connection
  sock, addr = s.accept()
  # create new thread to handle tcp connection
  t = threading.Thread(target=tcplink, args=(sock, addr))
  t.start()

#!/usr/bin/python

# import module
import socket

# create TCP object
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
# connect sina
s.connect(('127.0.0.1', 9999))
# receive welcome
print s.recv(1024)

for data in ['zjw', 'ygl', 'lele']:
  # send data
  s.send(data)
  print s.recv(1024)
while True:
  data = 1