The SocketServer module provides a framework for various kinds of socket-based
servers. The module provides a number of classes that can be mixed
and matched to create servers for different purposes.
Example 7-35 implements an Internet Time Protocol server
using this module. Use the timeclient script to try it
out.
Example 7-35. Using the SocketServer Module
File: socketserver-example-1.py
import SocketServer
import time
# user-accessible port
PORT = 8037
# reference time
TIME1970 = 2208988800L
class TimeRequestHandler(SocketServer.StreamRequestHandler):
def handle(self):
print "connection from", self.client_address
t = int(time.time()) + TIME1970
b = chr(t>>24&255) + chr(t>>16&255) + chr(t>>8&255) + chr(t&255)
self.wfile.write(b)
server = SocketServer.TCPServer(("", PORT), TimeRequestHandler)
print "listening on port", PORT
server.serve_forever()
connection from ('127.0.0.1', 1488)
connection from ('127.0.0.1', 1489)
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