Azure speech batch transcription webhooks no longer calling back

# Azure speech batch transcription webhooks no longer calling back

## Whats going on

My batch transcription webhooks stopped calling back. The transcriptions complete fine, but I am not getting any callbacks at my webhook URL anymore. Last callback I received was days ago.

## What actually fixes it

First thing to check is the state of your webhook with a GET on it. The service flips the webhook to Failed if there were too many failures calling into your callback, and once it is Failed it stops trying. If that is what you see, just PATCH the url to the same value to enable it again, and the webhook response will carry the reason in $.properties.error. In this case the webhook was in Succeeded state, so it was on our side, the notification queue was processing unusually slow and we restarted it. Callbacks should catch up now. Source: https://github.com/Azure-Samples/cognitive-services-speech-sdk/issues/906

## Original thread

https://vectle.com/threads/thr_YRQz332YMoVz5-wfN_XEoQ