Azure IoT Hub Connectivity - Authentication ??

[djaus2]

How can I add Authentication when making a connection from a device?
My code thus far:

                string method = "";
                byte[] data = new byte[0];

                MqttClientOptionsBuilder builder = new MqttClientOptionsBuilder()
                                        .WithClientId(Secrets.deviceId)
                                        .WithTls()
                                        //.WithAuthentication(method,data)
                                        .WithTcpServer(Secrets.IOT_CONFIG_IOTHUB_FQDN, Secrets.MqttPort);
       
                // Create client options objects
                ManagedMqttClientOptions options = new ManagedMqttClientOptionsBuilder()
                                        .WithAutoReconnectDelay(TimeSpan.FromSeconds(60))
                                        .WithClientOptions(builder.Build())
                                        .Build();

                // Creates the client object
                _mqttClient = new MqttFactory().CreateManagedMqttClient();

                // Set up handlers
                _mqttClient.ConnectedHandler = new MqttClientConnectedHandlerDelegate(OnConnected);
                _mqttClient.DisconnectedHandler = new MqttClientDisconnectedHandlerDelegate(OnDisconnected);
                _mqttClient.ConnectingFailedHandler = new ConnectingFailedHandlerDelegate(OnConnectingFailed);

                // Starts a conne.tion with the Broker
                await _mqttClient.StartAsync(options);

This runs OK but fails to connect. Doesn't crash though. Can queue telemetry.

My current issue is constructing the Authentication parameters, method and data.
I have the IoT centric username and password, the latter being a SAS key.

I would prefer if I could just use a connection string eg DeviceClient.CreateFromConnectionString()

Nb: App is .Net Standard

[rido-min]

Here you can find a MQTTNet.ICredentialsProvider implementation to produce username/password from a device connection string

https://github.com/iotmodels/MQTTnet.Client.Extensions.AzureIoT/blob/6c1fabbfb51db0ef1520d7fb7ddbd64e8525d1b5/src/MQTTnet.Client.Extensions.AzureIoT/Auth/SasCredentials.cs#L7

[djaus2]

Thanks I’ll have a look at that and get back to you. From: Rido ***@***.***> Sent: Thursday, October 5, 2023 12:43 AM To: dotnet/MQTTnet ***@***.***> Cc: David Jones (MVP) ***@***.***>; Author ***@***.***> Subject: Re: [dotnet/MQTTnet] Azure IoT Hub Connectivity - Authentication ?? (Discussion #1852) Here you can find a MQTTNet.ICredentialsProvider implementation to produce username/password from a device connection string https://github.com/iotmodels/MQTTnet.Client.Extensions.AzureIoT/blob/6c1fabbfb51db0ef1520d7fb7ddbd64e8525d1b5/src/MQTTnet.Client.Extensions.AzureIoT/Auth/SasCredentials.cs#L7 — Reply to this email directly, view it on GitHub<#1852 (comment)>, or unsubscribe<https://github.com/notifications/unsubscribe-auth/AC7U2EPTULL3IDHG67CBGVTX5VRW5AVCNFSM6AAAAAA5SCGPKOVHI2DSMVQWIX3LMV43SRDJONRXK43TNFXW4Q3PNVWWK3TUHM3TCOBXGM2DQ>. You are receiving this because you authored the thread.Message ID: ***@***.******@***.***>>