#!/bin/env python
#-*- coding:gb18030 -*-
#
import socket 
import time

i=1
while i<10:
  address=("127.0.0.1",3138)
  s=socket.socket(socket.AF_INET, socket.SOCK_STREAM)
  s.connect(address)
  buf='N:%d' % i
  s.send(buf.encode()) #注意，在python3.0中，网络发送必须采用字节字符串格式的，比如s.send(b"abc")
  buff=s.recv(1024)
  if(len(buff)):
    print(buff) 
  s.close
  time.sleep(1)
  i+=1

#!/bin/env python
#-*- coding:gb18030 -*-
#
import socket
address=('127.0.0.1',3138)
s=socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.bind(address)
s.listen(10)
while True:
  cfd,address=s.accept()
  buf=cfd.recv(1024)
  print(buf,address)
  cfd.send(buf)
  cfd.close()