I'm developing an application where IOT devices are connected with the Azure IOT Hub. and its realtime data can be visible on the web view. However, I'm facing an error, I'm trying to bind the data Azure function with SignalR, but when I run the application I receive the following error message.
The listener for function 'SignalR' was unable to start. Microsoft.Azure.EventHubs.Processor: Encountered error while fetching the list of EventHub PartitionIds. System.Private.CoreLib: The link address '$management' did not match any of the expected formats.
I've tried everything to fix it but failed every time. I'd really appreciate if someone would help me find the solution to this problem.
Here is the script I'm using from this link
Here is my SignalR.cs class
public static class SignalR
{
[FunctionName("SignalR")]
public static async Task Run(
[IoTHubTrigger("messages/events", Connection = "IoTHubTriggerConnection", ConsumerGroup = "$Default")]EventData message,
[SignalR(HubName = "broadcast")]IAsyncCollector<SignalRMessage> signalRMessages,
ILogger log)
{
var deviceData = JsonConvert.DeserializeObject<DeviceData>(Encoding.UTF8.GetString(message.Body.Array));
deviceData.DeviceId = Convert.ToString(message.SystemProperties["iothub-connection-device-id"]);
log.LogInformation($"C# IoT Hub trigger function processed a message: {JsonConvert.SerializeObject(deviceData)}");
await signalRMessages.AddAsync(new SignalRMessage()
{
Target = "notify",
Arguments = new[] { JsonConvert.SerializeObject(deviceData) }
});
}
}
Here is my SignalRConnection.cs class
public static class SignalRConnection
{
[FunctionName("SignalRConnection")]
public static SignalRConnectionInfo Run(
[HttpTrigger(AuthorizationLevel.Anonymous, "get", Route = null)] HttpRequest req,
[SignalRConnectionInfo(HubName = "broadcast")] SignalRConnectionInfo info,
ILogger log) => info;
}
Here is my local.settings.json file
{
"IsEncrypted": false,
"Values": {
"AzureWebJobsStorage": "UseDevelopmentStorage=true",
"FUNCTIONS_WORKER_RUNTIME": "dotnet",
"AzureSignalRConnectionString": "",
"MSDEPLOY_RENAME_LOCKED_FILES": 1,
"IoTHubTriggerConnection": ""
},
"Host": {
"LocalHttpPort": 7071,
"CORS": "*"
}
}
for IoTHubTriggerConnection, I'm using the connection string of iothubjohnsoncontrol (displayed in image below).
for AzureSignalRConnectionString, I'm using the connection string of signalrjohnsoncontrol (displayed in image below).