ADSL拨号VPS包含了中国大陆（联通，移动，电信，）

中国香港，国外拨号VPS。

# Filename: ChatRoomServer.py import threading import datetime import socket # a simple log function def log(lg):   print(lg) # Chat room server listen thread class, this class is use for listening client login # when a client request to connect server, this class will start a connect thread class ServerListenThread(threading.Thread):   def __init__(self, hostname, port, accept):     threading.Thread.__init__(self)     self.hostname = hostname     self.port = port     self.accept = accept     self.sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)     self.sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)     self.sock.bind((hostname, port))     self.sock.listen(0)     log('ServerIp:%s ServerPort:%s waiting for client...'%self.sock.getsockname())   def run(self):     clientid = 1     while True:       client, cltadd = self.sock.accept()       log('a request from Id=%s%s'%('%d Address:'%clientid , cltadd))       if self.accept(clientid, client):         clientid = clientid + 1 # Connect thread class, this class is use for connecting with client and receiving client's message class ServerConnectThread(threading.Thread):   def __init__(self, clientid, client, encoding, receive, disconnect):    threading.Thread.__init__(self)     self.client = client     self.clientid = clientid     self.encoding = encoding     self.receive = receive     self.disconnect = disconnect     self.clientname = None     self.inputs = self.client.makefile('rb', 0)     self.outputs = self.client.makefile('wb', 0)   def run(self):     self.sendstring('Input your name:')     while True:       string = self.readline()       if string:         string = string.lstrip()         if len(string)>0:           self.receive(self, string)       else:         self.inputs.close()         self.outputs.close()         break     if self.clientname:       self.disconnect(self)   def sendstring(self, string):     self.sendbytes(bytes(string, self.encoding))   def sendbytes(self, bts):     self.outputs.write(bts)   def readline(self):     rec = self.inputs.readline()     if rec:       string = bytes.decode(rec, self.encoding)       if len(string)>2:         string = string[0:-2]       else:         string = ' '     else:       string = False     return string # Chat room server class, this class is constitute of a listen thread and many connect thread class ChatRoomServer:   def __init__(self, ip='0.0.0.0', port=9113, encoding='utf-8'):     self.hostname = ip     self.encoding = encoding     self.port = port     self.clients = {}     self.clientnames = {}   def whenconnect(self, clientid, client):     log('a connect with Id=%s%s'%('%d Address:'%clientid , client.getpeername()))     connect = ServerConnectThread(clientid, client, self.encoding, self.whenreceive, self.whenexit)      connect.start()     return True   def whenreceive(self, client, string):     log('frome %d, receive:%s (%d)'%(client.clientid, string, len(string)))     if client.clientname:       if string[0]=='.':         self.handlecmd(client, string[1:])       else:         now = datetime.datetime.now()         sendstring = '%s %s\r\n %s\r\n'%(now, client.clientname, string)         self.sendtoall(sendstring, client)     else:       if self.clientnames.__contains__(string):         client.sendstring('%s is exited!!!\r\n'%string)       else:         client.clientname = string         client.sendstring('Hell, %s!!!\r\n'%client.clientname)         self.addclient(client)     return True   def whenexit(self, client):     self.delclient(client)     return True   def handlecmd(self, client, cmd):     log('cmd: %s'%cmd)     if cmd=='user':       client.sendstring('User list(%d):\r\n'%len(self.clients))       for i in self.clients:         clt = self.clients[i]         client.sendstring(' %d\t%s\r\n'%(clt.clientid, clt.clientname))     else:       client.sendstring('Unknow command: %s:\r\n'%cmd)   def start(self):     serverlisten = ServerListenThread(self.hostname, self.port, self.whenconnect)     serverlisten.start()   def sendtoall(self, string, notfor):     sends = bytes(string, self.encoding)     for i in self.clients:       if not(notfor and notfor.clientid==i):         self.clients[i].sendbytes(sends)   def addclient(self, client):     self.sendtoall('%s logined!!!\r\n'%client.clientname, client)     self.clients[client.clientid] = client     self.clientnames[client.clientname] = client.clientid   def delclient(self, client):     self.sendtoall('%s logouted!!!\r\n'%client.clientname, client)     del self.clients[client.clientid]     del self.clientnames[client.clientname] # start a chat room server ChatRoomServer().start()

有了这个服务器程序之后就可以了（当然前提是你安装的Python解释器），没有客户端的，那么你会问怎么开始聊天呢？

下面开始介绍怎么开始聊天，首先你把这个文件运行起来，如下图可以看到服务器正在等待客户端登陆了：

客户端直接使用telnet命令登陆，注意端口应该和服务器的一样，命令为：telnet 127.0.0.1 9011，自动打开telnet控制台，输入自己的名字吧：

现在你在看看服务器端的控制台界面，可以看到记录了登陆消息：

继续使用telnet登陆另外的用户之后就可以聊天了：

功能很简陋了，不过这让我想起了二三十年前的事，嘿嘿，那时候应该就是这样子聊天的了吧，生在这个时代的我们永远都体会不到那种乐趣了。

希望本文所述对大家的Python程序设计有所帮助。

(责任编辑：admin)