/
send_message_x509.py
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send_message_x509.py
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# -------------------------------------------------------------------------
# Copyright (c) Microsoft Corporation. All rights reserved.
# Licensed under the MIT License. See License.txt in the project root for
# license information.
# --------------------------------------------------------------------------
import os
import uuid
from azure.iot.device.aio import IoTHubDeviceClient
from azure.iot.device import Message, X509
import asyncio
messages_to_send = 10
async def main():
hostname = os.getenv("HOSTNAME")
# The device that has been created on the portal using X509 CA signing or Self signing capabilities
device_id = os.getenv("DEVICE_ID")
x509 = X509(
cert_file=os.getenv("X509_CERT_FILE"),
key_file=os.getenv("X509_KEY_FILE"),
pass_phrase=os.getenv("X509_PASS_PHRASE"),
)
# The client object is used to interact with your Azure IoT hub.
device_client = IoTHubDeviceClient.create_from_x509_certificate(
hostname=hostname, device_id=device_id, x509=x509
)
# Connect the client.
await device_client.connect()
async def send_test_message(i):
print("sending message #" + str(i))
msg = Message("test wind speed " + str(i))
msg.message_id = uuid.uuid4()
msg.correlation_id = "correlation-1234"
msg.custom_properties["tornado-warning"] = "yes"
msg.content_encoding = "utf-8"
msg.content_type = "application/json"
await device_client.send_message(msg)
print("done sending message #" + str(i))
# send `messages_to_send` messages in parallel
await asyncio.gather(*[send_test_message(i) for i in range(1, messages_to_send + 1)])
# Finally, shut down the client
await device_client.shutdown()
if __name__ == "__main__":
asyncio.run(main())
# If using Python 3.6 use the following code instead of asyncio.run(main()):
# loop = asyncio.get_event_loop()
# loop.run_until_complete(main())
# loop.close()