Unable to debug Event Grid Trigger Azure function locally

Question

I have a simple EventGridTrigger azure function in .net 6(isolated) in visual studo. Im getting "Error: connect ECONNREFUSED 127.0.0.1:7071".

using Microsoft.Azure.WebJobs;
using Microsoft.Azure.WebJobs.Extensions.EventGrid;
using Microsoft.Extensions.Logging;
using Azure.Messaging.EventGrid;

namespace Function
{
    public static class EventGridFunction
    {
        [FunctionName("EventGrid")]
        public static void Run([EventGridTrigger]EventGridEvent eventGridEvent, ILogger log)
        {
            log.LogInformation(eventGridEvent.Data.ToString());
        }
    }
}

This is the POST URL Im trying in postman. http://localhost:7071/runtime/webhooks/EventGrid?functionName=EventGrid

These are the headers.

Answer 1

Even i am facing similar issue like below and i feel this is a bug and raised a Git-Hub Request here.

Yes, eventually I will be using this function as a subscription to receive messages from my event grid topic.

To do this alternatively in local environment , you can follow below approach:

Firstly send the event grid output messages to storage queues like below:

Then whenever event occurs the a message comes like below(You need to keep separate queue only for event outputs):

Now, you can use Azure Function Queue trigger, so whenever a message comes in queue , your function triggers.

Answer 2

If anyone else needs help on this - I am using the latest VS 2022 update/template and the port is changed from 7071 to 7125. I discovered this in the launch setting for the project. I tested and localhost:7125 works in Postman. I also believe setting FUNCTIONS_HTTPWORKER_PORT in local.settings.json as suggested here https://github.com/Azure/Azure-Functions/issues/2426 has no effect when running locally.