python檢測遠程服務器tcp端口的代碼，這段代碼可以用來做服務器監控實用

#!/usr/bin/env python

coding:utf-8
filename:tcp.py
''' 
author: gavingeng 
date:   2011-12-14 09:35:59

''' 
import socket 
import sys
NORMAL=0 
ERROR=1 
TIMEOUT=5
def ping(ip,port,timeout=TIMEOUT): 
    try: 
        cs=socket.socket(socket.AF_INET,socket.SOCK_STREAM) 
        address=(str(ip),int(port)) 
        status = cs.connect_ex((address)) 
        cs.settimeout(timeout)

    #this status is returnback from tcpserver 
    if status != NORMAL : 
        print ERROR 
    else: 
        print NORMAL     
except Exception ,e: 
    print ERROR 
    print "error:%s" %e 
    return ERROR 

return NORMAL 


if name=='main': 
    if len(sys.argv) < 3 : 
        print ur'請按照如下格式使用: ./tcp.py www.sharejs.com 80' 
        sys.exit(1)

ip = sys.argv[1] 
port = sys.argv[2] 
try: 
    timeout = sys.argv[3] 
except IndexError ,e: 
    timeout=TIMEOUT 
ping(ip,port,timeout)  </pre>