Python实现的使用telnet登陆聊天室实例

本文实例讲述了Python实现的使用telnet登陆聊天室。分享给大家供大家参考。具体如下:

前久在家学习Python的时候写的一个简单的聊天室,可以使用telnet来登陆。

遗憾的是现在对中文的支持很差,英文聊天倒是没什么问题了。

功能很简单的,应该没有你想象的那么强大,但是你如果有兴趣的话可以试试的。

另外,让我惊奇的是它可以在Android的平板上运行SL4A的Python解释器上运行(需要稍微改几句代码,貌似是编码的那个地方,我记不清了)。

现在这个是可以在PC上跑起来的。

废话不多,直接放代码了,就一个py文件而已,而且注释是乱七八糟的,编码风格也不好(好神似我在用类C语言的习惯)。

# 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。

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