async def handle_pair_setup_pin(self, request):
content = await request.content.read()<EOL>hexlified = binascii.hexlify(content)<EOL>if hexlified == _DEVICE_AUTH_STEP1:<EOL><INDENT>return web.Response(<EOL>body=binascii.unhexlify(_DEVICE_AUTH_STEP1_RESP), status=<NUM_LIT:200>)<EOL><DEDENT>elif hexlified == _DEVICE_AUTH_STEP2:<EOL><INDENT>return web.Response(<EOL>body=binascii.unhexlify(_DEVICE_AUTH_STEP2_RESP), status=<NUM_LIT:200>)<EOL><DEDENT>elif hexlified == _DEVICE_AUTH_STEP3:<EOL><INDENT>return web.Response(<EOL>body=binascii.unhexlify(_DEVICE_AUTH_STEP3_RESP), status=<NUM_LIT:200>)<EOL><DEDENT>return web.Response(status=<NUM_LIT>)<EOL>
Handle AirPlay device authentication requests.