python socket 多人聊天室

Posted 2020-09-24

参考来源（其实我从上面复制了一点）：
Python 的 Socket 编程教程  http://www.oschina.net/question/12_76126
Python线程指南 http://www.open-open.com/lib/view/open1345476194313.html

Python Socket文档 https://docs.python.org/3/library/socket.html#socket-objects

具体思路：
每个client有两个线程，分别负责接收和发送，当没有发送时，在raw_input()那卡住，当没有接收时，在recv()那卡住
server为每个client开两个线程，分别处理接收和发送。每个发送的线程在con.wait()那阻塞，等待notify。每个接收的线程，在recv()那里等待来自client的输入，接收到输入后，发出一个notify，激活所有输出线程，自身则因为循环在下一个recv()那里等待。

这样做的优势时在等待期间，cpu都处于空闲状态，cpu只在接收和发送的瞬间被使用。
目前没有想到更好方法。。。

注意：
我做得有点粗糙，复制后有些注释和代码对应不起来，也没有添加新的注释

 

标签： <无>

 

代码片段(4)[全屏查看所有代码]

1. [文件] client.py ~ 976B     下载(283)     

?

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47

# -*- coding: utf-8 -*- """ Created on Thu Oct 24 17:35:50 2013   @author: zbg """   import socket import threading     inString = ‘‘ outString = ‘‘ nick = ‘‘   def DealOut(s):     global nick, outString     while True:         outString = raw_input()         outString = nick + ‘: ‘ + outString         s.send(outString)   def DealIn(s):     global inString     while True:         try:             inString = s.recv(1024)             if not inString:                 break             if outString != inString:                 print inString         except:             break             nick = raw_input("input your nickname: ") ip = raw_input("input the server‘s ip adrress: ") sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM) sock.connect((ip, 8888)) sock.send(nick)   thin = threading.Thread(target = DealIn, args = (sock,)) thin.start() thout = threading.Thread(target = DealOut, args = (sock,)) thout.start()   #sock.close()

2. [文件] server.py ~ 2KB     下载(285)     

?

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77

# -*- coding: utf-8 -*- """ Created on Fri Oct 25 10:33:44 2013   @author: zbg """ import socket import sys import threading   con = threading.Condition() HOST = raw_input("input the server‘s ip adrress: ") # Symbolic name meaning all available interfaces PORT = 8888 # Arbitrary non-privileged port data = ‘‘   s = socket.socket(socket.AF_INET, socket.SOCK_STREAM) print ‘Socket created‘ s.bind((HOST, PORT)) s.listen(10) print ‘Socket now listening‘   #Function for handling connections. This will be used to create threads def clientThreadIn(conn, nick):     global data #infinite loop so that function do not terminate and thread do not end.     while True:     #Receiving from client         try:             temp = conn.recv(1024)             if not temp:                 conn.close()                 return             NotifyAll(temp)             print data         except:             NotifyAll(nick + " leaves the room!")             print data             return       #came out of loop   def NotifyAll(sss):     global data     if con.acquire():         data = sss         con.notifyAll()         con.release()    def ClientThreadOut(conn, nick):     global data     while True:         if con.acquire():             con.wait()             if data:                 try:                     conn.send(data)                     con.release()                 except:                     con.release()                     return                         while 1:     #wait to accept a connection - blocking call     conn, addr = s.accept()     print ‘Connected with ‘ + addr[0] + ‘:‘ + str(addr[1])     nick = conn.recv(1024)      #send only takes string     #start new thread takes 1st argument as a function name to be run, second is the tuple of arguments to the function.     NotifyAll(‘Welcome ‘ + nick + ‘ to the room!‘)     print data     print str((threading.activeCount() + 1) / 2) + ‘ person(s)!‘     conn.send(data)     threading.Thread(target = clientThreadIn , args = (conn, nick)).start()     threading.Thread(target = ClientThreadOut , args = (conn, nick)).start()   s.close()

3. [图片] QQ截图20131027115134.png    

4. [图片] QQ截图20131027115232.png