#coding = utf-8

import socket
import threading

class UdpServer(threading.Thread):
 def __init__(self):
  threading.Thread.__init__(self)
  self.address = ('127.0.0.1', 10000)
  self.s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
  self.s.bind(self.address)
  self.stop_flag = False


 def recieve_msg(self):
  (data, addr) = self.s.recvfrom(2048)
  if data:
   print 'recieve data from', addr
   print data

 def run(self):
  while not self.stop_flag:
   self.recieve_msg()

 def stop(self):
  self.stop_flag = True

class UdpClient(threading.Thread):
 def __init__(self):
  threading.Thread.__init__(self)
  self.address = ('127.0.0.1', 10001)
  self.s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
  self.stop_flag = False

 def send_msg(self):
  data = raw_input()
  if not data:
   print 'Wrong inpiut'
   return
  else:
   self.s.sendto(data, self.address)

 def run(self):
  while not True:
   self.send_msg()


 def stop(self):
  self.stop_flag = True


def main():
 t1 = UdpServer()
 t2 = UdpClient()
 t1.start()
 t2.start()



if __name__ == '__main__':
 main()