text: #!/usr/bin/env python
  # -*- encoding: utf-8 -*-
  """
      Topic: sample
      Desc : 客户端UDP
  """
  from socket import *
  __author__ = 'Xiong Neng'
  
  HOST = 'localhost'
  PORT = 21567
  BUFSIZE = 1024
  ADDR = (HOST, PORT)
  
  udpCliSock = socket(AF_INET, SOCK_DGRAM)
  
  while True:
      data = input('> ')
      if not data:
          break
      udpCliSock.sendto(data, ADDR)
      data, ADDR = udpCliSock.recvfrom(BUFSIZE)
      if not data:
          break
      print(data)
  
  udpCliSock.close()
  