python socket编程

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最近想练习用python写一个聊天的小程序，在使用socket的过程中遇到了种种困惑，好在一步步解决了问题。

学习socket，最开始练习了tcp的echo client 和echo server 参考了廖雪峰的python网络编程部分

tcpserver.py

#usr/bin/python
#-*- coding = utf-8 -*-
from socket import *
import threading,time

HOST = '127.0.0.1'
PORT = 5005
BUFSIZ = 1024
ADDR = (HOST,PORT) 
    
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

s = socket(AF_INET,SOCK_STREAM)
s.bind(ADDR)  
s.listen(5)

while True:
    print 'waiting for connection'
    sock, addr = s.accept()
    print 'conncting from :',addr31     t= threading.Thread(target =tcplink,args=(sock,addr)) #多线程实现
    t.start()
  

tcpclient.py

#!usr/bin/env python 
from socket import *

HOST='127.0.0.1'
PORT=5005
BUFSIZE = 1024
ADDR = (HOST,PORT)

s = socket(AF_INET, SOCK_STREAM)
s.connect(ADDR)
print s.recv(1024)
while True:
    data1 = raw_input('>')
    s.send(data1)
    if data1=='exit':
        break
    print s.recv(BUFSIZE)
s.close()

接着扩展程序 找到另一篇文章

http://www.cnblogs.com/hazir/p/python_chat_room.html

实现了一个简单的聊天程序，但是还是存在着很多问题，坑先放着以后过来添