python socket网络编程-白红宇

python socket网络编程

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发布时间：2019-06-28

本文共 3367 字，大约阅读时间需要 11 分钟。

socket套接字：为了使2个不同应用程序进行通信。

两种套接字类型：基于文件的和基于网络的

1.基于文件(AF_LOCAL或AF_UNIX)：代表Unix

2.面向网络(AF_INET):代表因特网

面向连接的套接字(SOCK_STREAM):TCP

面向无连接的套接字(SOCK_DGRAM):UDP

Python中的网络编程socket()模块

TCP 网络程序

serice服务端

1 # -*- coding: utf-8 -*- 2 from socket import * 3 from time import ctime 4  5 HOST = ''  ##为空表示bind()函数可以绑定在所有有效的地址上 6 PORT=21567 7 BUFSIZ = 1024  ##缓冲区大小  1K 8 ADDR = (HOST,PORT) 9 10 tcpSerSock = socket(AF_INET,SOCK_STREAM)11 tcpSerSock.bind(ADDR)12 tcpSerSock.listen(5)  ##允许最多多少个链接 后来的会被拒绝掉13 14 while True:15     print 'waiting for connection...'16     tcpCliSock,addr = tcpSerSock.accept()  ##阻塞式线程17     print '...connected from:',addr18 19     while True:20         data = tcpCliSock.recv(BUFSIZ)21         if not data:22             break23         tcpCliSock.send('(%s) %s' % (ctime(),data))24     tcpCliSock.close()25 tcpSerSock.close()

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client 客户端

1 #!/usr/bin/env python 2 # -*- coding: utf-8 -*- 3  4 from socket import * 5 HOST = 'localhost'  ## 6 PORT=21517 7 BUFSIZ = 1024  ##缓冲区大小  1K 8 ADDR = (HOST,PORT) 9 10 tcpCliSock = socket(AF_INET,SOCK_STREAM)11 tcpCliSock.connect(ADDR)12 13 while True:14     data = raw_input('> ')15     if not data:16         break17     tcpCliSock.send(data)18     data = tcpCliSock.recv(BUFSIZ)19     if not data:20         break21     print data22 tcpCliSock.close()

UDP程序

service 服务端

1 #!/usr/bin/env python 2 # -*- coding: utf-8 -*- 3  4 from socket import * 5 from time import ctime 6  7 HOST='' 8 PORT=21567 9 BUFSIZ = 102410 ADDR = (HOST,PORT)11 12 udpSerSock = socket(AF_INET,SOCK_DGRAM)13 udpSerSock.bind(ADDR)14 15 while True:16     print 'waiting for message....'17     data , addr = udpSerSock.recvfrom(BUFSIZ)18     udpSerSock.sendto('[%s] %s' % (ctime(),data),addr)19     print '...received from and returned to:',addr20 udpSerSock.close()

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client 客户端

1 #!/usr/bin/env python 2 # -*- coding: utf-8 -*- 3  4 from socket import * 5  6 HOST='localhost' 7 PORT=21567 8 BUFSIZ=1024 9 ADDR = (HOST,PORT)10 11 udpCliSock= socket(AF_INET,SOCK_DGRAM)12 13 while True:14     data = raw_input('> ')15     if not data:16         break17     udpCliSock.sendto(data,ADDR)18     data,ADDR = udpCliSock.recvfrom(BUFSIZ)19     if not data:20         break21     print data22 23 udpCliSock.close()

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SocketService 通讯程序

服务端

1 #!/usr/bin/env python 2 # -*- coding: utf-8 -*- 3  4 from SocketServer import (TCPServer as TCP,StreamRequestHandler as SRH) 5 from time import ctime 6  7 HOST = '' 8 PORT = 21569 9 ADDR = (HOST,PORT)10 11 class MyRequestHandler(SRH):12     def handle(self):13         print '...connected from:',self.client_address14         self.wfile.write('[%s] %s' % (ctime(),self.rfile.readline()))15 16 tcpServ = TCP(ADDR,MyRequestHandler)17 print 'waiting for connection...'18 tcpServ.serve_forever()

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客户端

1 #!/usr/bin/env python 2 # -*- coding: utf-8 -*- 3  4 from socket import * 5 HOST = 'localhost'  ## 6 # HOST = '192.168.0.51' 7 PORT=21569 8 BUFSIZ = 1024  ##缓冲区大小  1K 9 ADDR = (HOST,PORT)10 11 while True:12     tcpCliSock = socket(AF_INET, SOCK_STREAM)13     tcpCliSock.connect(ADDR)14     data = raw_input('> ')15     if not data:16         break17     tcpCliSock.send('%s\r\n' % data)18     data = tcpCliSock.recv(BUFSIZ)19     if not data:20         break21     print data.strip()22     tcpCliSock.close()

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转载于:https://www.cnblogs.com/seablog/p/7041513.html

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