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Broadcast Sender

import socket, sys dest = ('127.0.0.1', 51423) s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM) s.setsockopt(socket.SOL_SOCKET, socket.SO_BROADCAST, 1) s.sendto("Hello", dest) print "Looking for replies; press Ctrl-C to stop." while 1:     (buf, address) = s.recvfrom(2048)     if not len(buf):         break     print "Received from %s: %s" % (address, buf)