import socket, select
import sys

print "RUNNING on %s platform: %s" % (sys.platform, sys.version)

sock = socket.socket(socket.AF_INET,socket.SOCK_DGRAM)
sock.setblocking(0)

address = ('127.0.0.1', 0)      # loopback interface and let system choose a free port
#address = ('127.0.0.1', 34567)  # loopback interface but specific port

print "Binding to: %s" % (address, )
sock.bind(address)
print "Binded to :%s" % (sock.getsockname(), ) 

data = 'wakeup'
address2 = sock.getsockname()
print "send to :%s" % (address2, )
sock.sendto(data, address2 )

r, w, e = select.select([sock], [], [], 1)

assert r and r[0] == sock
assert data == sock.recv(0x4000)

print "OK"