python核心編程課後作業2-9，python核心課後2-9

python核心編程課後作業2-9，python核心課後2-9

網上找的代碼基礎上修複了一些問題。現在可以支援quit後繼續和其他人聊天。思路：A退出後，向B發送清除會話指令，B接收後再向伺服器返回清除會話指令，伺服器端清除B的會話（雖然繁瑣但是可以解決另一個問題:比如一個人輸入了和自己聊天的指令會導致chat_with值錯誤）。

server_test.py

import threadingimport refrom socket import *HOST='127.0.0.1'PORT=21568BUFSIZ=1024ADDR=(HOST,PORT)tcpSerSock = socket(AF_INET,SOCK_STREAM)tcpSerSock.bind(ADDR)tcpSerSock.listen(5)def sendMsg(socket, username):    while True:        data = socket.recv(BUFSIZ)        if data == 'quit':            if chatwith.has_key(username):                chatwith[username].send((username + ':' + data))                chatwith[username].send('cmdcancel')                del chatwith[username]                del account[username]            socket.send(data)            socket.close()            print '%s logout' % username            break        elif data == 'cmdcancel':            del chatwith[username]        elif re.match(r'to:.+',data) is not None:            chat_with = data[3:]            if chat_with == username:                socket.send('Can`t chat with yourself')            elif chatwith.has_key(chat_with):                socket.send('the user %s is bussy' % chat_with)            elif account.has_key(chat_with):                chatwith[username]=account[chat_with]                chatwith[chat_with]=socket            else:                socket.send('the user %s is not exist' % chat_with)        else:            if chatwith.has_key(username):                chatwith[username].send(data)            else:                socket.send('you want to chat with-> to:username ')account = {}chatwith = {}while True:    print 'waiting for connection...'    tcpCliSock,addr=tcpSerSock.accept()    print '...connected from:', addr    username = tcpCliSock.recv(BUFSIZ)    print 'username:%s' % username    if account.has_key(username):        tcpCliSock.send("Reuse")        tcpCliSock.close()    else:        tcpCliSock.send("Welcome!")        account[username]=tcpCliSock        recev_msg = threading.Thread(target=sendMsg, args=(tcpCliSock,username))        recev_msg.start()tcpSerSock.close()

client_test.py

#coding=utf-8from socket import *from time import ctimeimport threadingHOST='localhost'PORT=21568BUFSIZ=1024ADDR=(HOST,PORT)def sendMsg(sock):    while True:        data = raw_input('>')        sock.send(data)        if data == 'quit':            breakdef recvMsg(sock):    while True:        data = tcpCliSock.recv(BUFSIZ)        if data == 'cmdcancel':            sock.send('cmdcancel')            continue        elif data == 'quit':            sock.close()            print data            break        print '[%s] %s' % (ctime(),data)tcpCliSock=socket(AF_INET,SOCK_STREAM)tcpCliSock.connect(ADDR)username = raw_input('please input your name:')tcpCliSock.send(username)data = tcpCliSock.recv(BUFSIZ)if data == 'Reuse':    print 'The username has been used!'else:    send_msg = threading.Thread(target=sendMsg, args=(tcpCliSock,))    recv_msg = threading.Thread(target=recvMsg, args=(tcpCliSock,))    send_msg.start()    recv_msg.start()    send_msg.join()tcpCliSock.close()

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