def coap_message(message=None):
protocol = yield from Context.create_client_context()
if message is None:
request = Message(code=POST, payload="Hello Twitter".encode('utf-8'))
request.set_request_uri('coap://localhost/alive')
else:
request = Message(code=POST,
payload="twitter:{}".format(message).encode('utf-8'))
request.set_request_uri('coap://localhost/server')
try:
yield from protocol.request(request).response
except Exception as e:
print('Failed to fetch resource:')
print(e)
async def _get_file(url, method=GET, payload=b''):
protocol = await Context.create_client_context(loop=None)
request = Message(code=method, payload=payload)
request.set_request_uri(url)
try:
response = await protocol.request(request).response
except Exception as e:
code = "Failed to fetch resource"
payload = '{}'.format(e)
else:
code = response.code
payload = response.payload
finally:
await protocol.shutdown()
LOGGER.debug('{}: {}'.format(code, payload))
return code, payload
def start_server():
protocol = yield from Context.create_client_context()
request = Message(code = Code.GET, mtype=aiocoap.CON)
request.set_request_uri('coap://127.0.0.1/button')
# set observe bit from None to 0
request.opt.observe = 0
def handle_notification(response):
print("asdsadsa")
print(response)
import code; code.interact(local=dict(globals(), **locals()))
protocol_request = protocol.request(request)
protocol_request.observation.register_callback(handle_notification)
protocol_request.observation.register_errback(handle_notification)
response = yield from protocol_request.response
def _coap_resource(url, method=GET, payload=b''):
protocol = yield from Context.create_client_context()
request = Message(code=method, payload=payload)
request.set_request_uri(url)
try:
response = yield from protocol.request(request).response
except Exception as e:
code = "Failed to fetch resource"
payload = '{0}'.format(e)
else:
code = response.code
payload = response.payload.decode('utf-8')
finally:
yield from protocol.shutdown()
logger.debug('Code: {0} - Payload: {1}'.format(code, payload))
return code, payload
def alive_message(args):
path = args.path
payload = args.payload,
server = args.server
protocol = yield from Context.create_client_context()
if path == "alive":
request = Message(code=POST, payload="Alive".encode('utf-8'))
request.set_request_uri('coap://{}/{}'.format(server, path))
else:
request = Message(code=POST, payload=payload.encode('utf-8'))
request.set_request_uri('coap://{}/server'.format(server))
try:
yield from protocol.request(request).response
except Exception as e:
print('Failed to fetch resource:')
print(e)
async def coap_request(url, method=POST, payload=b''):
"""Send a CoAP request containing an update notification."""
logger.debug('Sending a CoAP request to url: {}'.format(url))
context = await Context.create_client_context(loop=None)
request = Message(code=method, payload=payload)
request_uri = '{}://{}'.format(COAP_METHOD, url)
request.set_request_uri(request_uri)
try:
response = await context.request(request).response
except Exception as e:
code = "Failed to fetch resource"
payload = '{}'.format(e)
else:
code = response.code
payload = response.payload.decode('utf-8')
finally:
await context.shutdown()
logger.debug('{}: {}'.format(code, payload))
return code, payload
