MessagingResponse's statusCallback not working

[angelaki]

Right now your MessagingResponse class just answeres with a message (like it was a new, sent one). When setting a statusCallback the result could e.g. look like this:

<?xml version="1.0" encoding="utf-8"?>
<Response>
	<Message statusCallback="https://my.callback.service/Twilio/Sms/Status">Hey there ! How 'bout those Seahawks?</Message>
</Response>

But according to the documentation, the attribute must be named action instead (https://www.twilio.com/docs/sms/tutorials/confirm-delivery-csharp-aspnet-mvc):

<?xml version="1.0" encoding="UTF-8"?>
<Response>
    <Message action="http://postb.in/b/1234abcd">This message will be tracked!</Message>
</Response>

It took me a while to find this ;). I already tried to just change it and make a PR but you're using the Message-Class where actually statusCallback is the right name for the property. For not deploying a breaking change I'd recommend your API to accept both statusCallback and action? Right now your lib https://github.com/twilio-labs/twilio-aspnet utilizing the [TwiMLResult](https://github.com/twilio-labs/twilio-aspnet/blob/main/src/Twilio.AspNet.Core/TwiMLResult.cs) isn't working because of this.

[angelaki]

In cooperation with one of your customer supporters I've just realized that the MessagingResponse already has an action proprety. But why is there also a (useless) statusCallback? Is it deprecated?

[rakatyal]

Hi @angelaki, statusCallback is indeed deprecated in favor of action. Is there anything else we can help you with?

[angelaki]

No, that's it.