使用python实现tcp自动重连
操作系统： CentOS 6.9_x64
python语言版本： 2.7.13
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
'''
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()
运行效果：
(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
讨论
这里只是个简单的示例代码，实现了python的tcp自动重连。