import socket import time from eventhandler import EventHandler, event_loop class UDPServer(EventHandler): def __init__(self, address): self.sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM) self.sock.bind(address) def fileno(self): return self.sock.fileno() def wants_to_receive(self): return True class UDPTimeServer(UDPServer): def handle_receive(self): msg, addr = self.sock.recvfrom(1) self.sock.sendto(time.ctime().encode('ascii'), addr) class UDPEchoServer(UDPServer): def handle_receive(self): msg, addr = self.sock.recvfrom(8192) self.sock.sendto(msg, addr) if __name__ == '__main__': handlers = [ UDPTimeServer(('',14000)), UDPEchoServer(('',15000)) ] event_loop(handlers)