Python之Socket自动重连

发布时间:2019-08-29 07:42:47编辑:auto阅读(2617)

    参考:https://www.cnblogs.com/MikeZhang/p/pythonTcpReconnect20170701.html

    问题描述

    现有一个tcp客户端程序,需定期从服务器取数据,但由于种种原因(网络不稳定等)需要自动重连。

    测试服务器示例代码:

    https://github.com/mike-zhang/pyExamples/blob/master/socketRelate/tcpServer1_multithread.py

    解决方案

    复制代码
    '''
    tcp client with reconnect
    E-Mail : Mike_Zhang@live.com
    '''
    
    #! /usr/bin/env python
    #-*- coding:utf-8 -*-
    
    import os,sys,time
    import socket
    
    def doConnect(host,port):
        sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
        try :
            sock.connect((host,port))
        except :
            pass
        return sock
    
    def main():
        host,port = "127.0.0.1",12345
        print host,port
        sockLocal = doConnect(host,port)
    
        while True :
            try :
                msg = str(time.time())
                sockLocal.send(msg)
                print "send msg ok : ",msg
                print "recv data :",sockLocal.recv(1024)
            except socket.error :
                print "\r\nsocket error,do reconnect "
                time.sleep(3)
                sockLocal = doConnect(host,port)
            except :
                print '\r\nother error occur '
                time.sleep(3)
            time.sleep(1)
    
    if __name__ == "__main__" :
        main()
    复制代码

    运行效果:

    复制代码
    (py27env) [root@local t1]# python tcpClient1_reconnect.py
    127.0.0.1 12345
    send msg ok :  1498891374.98
    recv data : 1498891374.98
    send msg ok :  1498891375.98
    recv data : 1498891375.98
    send msg ok :  1498891376.98
    recv data :
    
    socket error,do reconnect
    send msg ok :  1498891381.99
    recv data : 1498891381.99
    send msg ok :  1498891382.99
    recv data : 1498891382.99
    复制代码

    讨论

    这里只是个简单的示例代码,实现了python的tcp自动重连。

    好,就这些了,希望对你有帮助。

    本文github地址:

    https://github.com/mike-zhang/mikeBlogEssays/blob/master/2017/20170701_python之tcp自动重连.rst


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