# coding: spec
from photons_messages import Services, DiscoveryMessages, protocol_register
from photons_app.test_helpers import print_packet_difference
import binascii
describe "DiscoveryMessages":
it "can unpack":
hexd = "29000014f7f15496d073d51261e200004c49465856320101000000000000000003000000017cdd0000"
unpackd = DiscoveryMessages.unpack(hexd, protocol_register=protocol_register)
expected = DiscoveryMessages.StateService.empty_normalise(
**{
"frame_address": {
"ack_required": False,
"res_required": True,
"reserved2": "4c4946585632",
"reserved3": "00",
"sequence": 1,
"target": "d073d51261e20000",
},
"frame_header": {
"addressable": True,
"protocol": 1024,
"reserved1": "00",
"size": 41,
"source": 2522149367,
"tagged": False,
def datagram_received(sp, data, addr):
pkt = DiscoveryMessages.unpack(data, protocol_register=protocol_register)
assert pkt | DiscoveryMessages.GetService
res = DiscoveryMessages.StateService(target=target, source=pkt.source, sequence=pkt.sequence, service=Services.UDP, port=port)
self.transport.sendto(res.tobytes(None), addr)