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用Python实现一个简单的多线程TCP服务器的教程

Jun 06, 2016 am 11:16 AM
python

 最近看《python核心编程》,书中实现了一个简单的1对1的TCPserver,但是在实际使用中1对1的形势明显是不行的,所以研究了一下如何在server端通过启动不同的线程(进程)来实现每个链接一个线程。

其实python在类的设计上已经考虑到了这一方面的需求,我们只要在自己的server上继承一下SocketServer.BaseRequestHandler就可以了。
server端代码如下:

#!/usr/bin/env python 
import SocketServer 
from time import ctime 
HOST = '' 
PORT = 21567 
ADDR = (HOST, PORT) 
class MyRequestHandler(SocketServer.BaseRequestHandler): 
  def handle(self): 
    print '...connected from:', self.client_address 
    while True: 
      self.request.sendall('[%s] %s' % (ctime(),self.request.recv(1024))) 
tcpServ = SocketServer.ThreadingTCPServer(ADDR, MyRequestHandler) 
print 'waiting for connection...' 
tcpServ.serve_forever()

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客户端代码如下(基本和书中一模一样,只是把循环中的关闭链接注释掉了):

#!/usr/bin/env python 
from socket import * 
HOST = 'localhost' 
PORT = 21567 
BUFSIZ = 1024 
ADDR = (HOST, PORT) 
while True: 
  tcpCliSock = socket(AF_INET, SOCK_STREAM) 
  tcpCliSock.connect(ADDR) 
  data = raw_input('> ') 
  if not data: 
    break 
  tcpCliSock.send('%s\r\n' % data) 
  data = tcpCliSock.recv(BUFSIZ) 
  if not data: 
    break 
  print data.strip() 
#tcpCliSock.close()

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从客户端的代码可以看出,每次输入都会建立一次新的请求。
测试一下,启动server和client之后,在client中输入测试: 

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