[Python-*-讀書]Python基礎教程–虛擬茶話會

總的來說是一個只支援一個聊天室的伺服器端 用戶端使用telnet

書籍：Python資料匯總

Python教程  這裡是第二十四章的源碼，練習研究之用

#coding:utf8 #python2.7 chatSer2.py#稍微複雜一點的聊天室伺服器'''用python啟動服務 telnet串連之後就可以變成簡單的聊天伺服器第一次登陸：login name 登出： logout說話： say 查看誰登陸過伺服器：who 查看同一個房間的人 : look 簡單例子：telnet localhost 50005Welcome to TestChatlogin tianshidiyu has entered the room.nihUnknown command: ihsay nihaotianshi: nihaodiyu: niyehao'''from asyncore import dispatcher from asynchat import async_chatimport socketimport asyncoreHOST = ''PORT = 50005SERVERCONF = (HOST,PORT)NAME = 'TestChat'class EndSession(Exception):    pass class CommandHandler(object):    '''    命令解析類    '''        def unknown(self,session,cmd):        '響應未知的命令'        session.push('Unknown command:%s \r\n' %cmd)    def handle(self,session,line):        '處理從用戶端發來的資訊 解析命令和內容'        if not line:            print 'please write a command...'                    if not line.strip():             print 'get a line :',line             return                parts = line.split(' ',1)        #命令分離        cmd = parts[0]        try:            line = parts[1].strip()        except IndexError:            line = ''        #調用相應的方法處理命令        meth = getattr(self, 'do_'+cmd, None)        try:            #調用命令對應的方法            meth(session,line)        except TypeError:            self.unknown(session, cmd)            class Room(CommandHandler):    '''    包括一個或多個使用者（會話）的泛型環境。負責處理基本的命令和廣播    '''        def __init__(self,server):        self.server = server        self.sessions = []            def add(self, session):        'add a user'        self.sessions.append(session)            def remove(self,session):        'a user leave'        self.sessions.remove(session)            def broadcast(self,line):        'give all session in the room a line'        for session in self.sessions:            session.push(line)            def do_logout(self,session,line):        '響應登出命令'        raise EndSession    class LoginRoom(Room):    '''    為剛剛登陸的使用者準備的房間    '''        def add(self,session):        Room.add(self, session)        self.broadcast('Welcome to %s \r\n' %self.server.name)            def unknown(self, session, cmd):        session.push('Please login \nUse "login <nick>"\r\n')            def do_login(self, session, line):        name = line.strip()        #登陸時必須指定一個使用者名稱        if not name:            session.push('Please enter a name\r\n')        elif name in self.server.users: #使用者名稱不可重複 ？            session.push('The name "%s" is taken! \r\n' %name)            session.push('Please try again.\r\n')        else:            session.name = name            session.enter(self.server.main_room)            class ChatRoom(Room):    '''    為多使用者在一起聊天準備的房間    '''    def add(self, session):        #tell all new one come        self.broadcast(session.name +' has entered the room. \r\n')        self.server.users[session.name] = session        Room.add(self, session)            def remove(self, session):        Room.remove(self. session)        #tell all the user logout        self.broadcast(session.name +' has left the room \r\n')            def do_say(self, session, line):        self.broadcast(session.name+': '+line+'\r\n')            def do_look(self, session, line):        'look who is in the room'        session.push('The following are in this room: \r\n')        for other in self.sessions:            session.push(other.name+'\r\n')                def do_who(self, session, line):        '查看誰登陸過'        session.push('The following are logged in: \r\n')        for name in self.server.users:            session.push(name+ '\r\n')class LogoutRoom(Room):    '''    為單個使用者準備的房間，只用於將使用者從伺服器移除    '''        def add(self, session):        try:            del self.server.users[session.name]        except KeyError:            pass         class ChatSession(async_chat):    '''    單個會話，負責和使用者通訊    '''        def __init__(self, server, sock):        async_chat.__init__(self, sock)        self.server = server        self.set_terminator('\r\n')        self.data = []        self.name = None        #所有會話從這裡登入        self.enter(LoginRoom(server))    def enter(self, room):        try:             cur = self.room        except AttributeError:            pass         self.room = room         room.add(self)            def collect_incoming_data(self, data):        self.data.append(data)            def found_terminator(self):        line = ''.join(self.data)        self.data = []        try:            self.room.handle(self, line)        except EndSession:            self.handle_close()            def handle_close(self):        async_chat.handle_close(self)        self.enter(LogoutRoom(self.server))        class ChatServer(dispatcher):    '''    只有一個房間的聊天伺服器    '''        def __init__(self, serverconf, name):        dispatcher.__init__(self)        self.create_socket(socket.AF_INET,socket.SOCK_STREAM)        self.set_reuse_addr() #可以重用上一次的連接埠號碼        self.bind(SERVERCONF)        self.listen(5)        self.name = name         self.users = {}        self.main_room = ChatRoom(self)        def handle_accept(self):        conn, addr = self.accept()        ChatSession(self, conn)#主函數      if __name__=='__main__':    s = ChatServer(SERVERCONF,NAME)    try:        asyncore.loop()    except KeyboardInterrupt:        print 'server Exception ...quit'                                     

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