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39 lines
1.1 KiB
39 lines
1.1 KiB
import select
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import socket
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import threading
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import random
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from Queue import Queue, Empty
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MAGIC_PACKET = ""
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for i in xrange(50):
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MAGIC_PACKET += chr(random.randrange(ord('a'),ord('z')))
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def get_local_ip():
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def udp_listening_server():
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s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
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s.bind(('<broadcast>', 8888))
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s.setblocking(0)
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while True:
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result = select.select([s],[],[])
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msg, address = result[0][0].recvfrom(1024)
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msg = unicode(msg)
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if msg == MAGIC_PACKET:
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break
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queue.put(address)
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queue = Queue()
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thread = threading.Thread(target=udp_listening_server)
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thread.queue = queue
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thread.start()
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s2 = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
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s2.setsockopt(socket.SOL_SOCKET, socket.SO_BROADCAST, 1)
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waiting = True
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while waiting:
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s2.sendto(bytes(MAGIC_PACKET), ('<broadcast>', 8888))
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try:
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address = queue.get(False)
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except Empty:
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pass
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else:
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waiting = False
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return address[0]
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