Python Network Programming

How to do it...

We can write a client that will wait for a particular network service forever or for a timeout. In this example, by default, we would like to check when a web server is up in localhost. If you specified some other remote host or port, that information will be used instead.

Listing 3.3 shows waiting for a remote network service, as follows:

#!/usr/bin/env python # Python Network Programming Cookbook, Second Edition -- Chapter - 3 # This program is optimized for Python 2.7.12 and Python 3.5.2. # It may run on any other version with/without modifications. import argparse import socket import errno from time import time as now DEFAULT_TIMEOUT = 120 DEFAULT_SERVER_HOST = 'localhost' DEFAULT_SERVER_PORT = 80 class NetServiceChecker(object): ...