port_checker_tcp.py

#!/usr/bin/python                                                                                                         
# -*- coding: utf-8 -*-

#利用python检测端口脚本

import socket
import re
import sys

def check_server(address, port):
    #create a TCP socket
    s = socket.socket()
    print "Attempting to connect to %s on port %s" % (address, port)
    try:
        s.connect((address, port))
        print "Connected to %s on port %s" % (address, port)
        return True
    except socket.error, e:
        print "Connection to %s on port %s failed: %s" % (address, port, e)
        return False

if __name__ == '__main__':
    from optparse import OptionParser
    parser = OptionParser()

    parser.add_option("-a", "--address", dest="address", default='localhost',
                      help="ADDRESS for server", metavar="ADDRESS")

    parser.add_option("-p", "--port", dest="port", type="int", default=80,
                      help="PORT for server", metavar="PORT")

    (options, args) = parser.parse_args()
    print 'options: %s, args: %s' % (options, args)
    check = check_server(options.address, options.port)
    print 'check_server returned %s' % check
    sys.exit(not check)