Python socket port: to detect server ports instead of Telnet

Scene:

In the use of Linux process, we often use Telnet to test the other server a port is open, but Linux is not installed by default Telnet client, many times the temporary installation of Telnet will be more troublesome, this time can be used in Python to do a simple test.

Pythonimport Sockets=socket.socket () s.connect (("IP", port) s.close

Note: The socket module is actually called, and Telnet is the only way to test the TCP port.

Script:

 1 #!/usr/bin/python  2   3 import socket,re,sys  4    5 def check_server (Address,port):   6   s=socket.socket ()   7   print  "Attempting to connect to %s on port  %s " % (address,port)   8   9   try: 10      s.connect ((address,port))  11     print  "Connected"  12      return true 13   except socket.error,e: 14      print  "Failed"  15     return False  16  17 if __name__ ==  ' __main__ ':  18   from optparse  import optionparser 19   parser=optionparser ()  20  21    parser.add_option ("-A","--address ", dest=" address ", default= ' localhost ', help=" address for        server ", metavar=" ADDRESS ")  22   parser.add_option ("-P ","--port ", dest=" Port ", type=" int ", default=80,help=" Port for server ",      metavar=" PORT ")  23   24    (Options,args) =parser.parse_args ()  25   print  ' options  %s ,args %s '% (Options,args)  26   print options.address,options.port  27   check=check_server (Options.address,options.port)  28  29    print  ' check_server returned %s '  %check 30   sys.exit (not  Check) ~

This article is from the "Hiubuntu" blog, make sure to keep this source http://qujunorz.blog.51cto.com/6378776/1546083

Python socket port: to detect server ports instead of Telnet