EventHub WaitTime and retry-after header

[Amwins-Vault-Boy]

I'm currently trying to test some throttling handling I seem to be getting zero for WaitTime in the EventHub when setting UseRetryAfterHeader to true. If I set that to false and set a delay time it correctly shows in the WaitTime. Is there any other way to get the actual retry-after value at this point?

Here is my EventHub code:

_pnpContextFactory.EventHub.RequestRetry = (retryEvent) =>
{
    if (retryEvent.Exception is null && retryEvent.HttpStatusCode is 429 or 503 or 504)
    {
        _logger.LogCritical("Wait Time: {WaitTime}", retryEvent.WaitTime);
    }
};

The event is getting caught, the value is just always zero.

What I really need is a way to get to the underlying Retry-After header value when the EventHub fires.

[Amwins-Vault-Boy]

Just increased the log level to see if I can verify it is getting a valid Retry-After, and it is there:

[Amwins-Vault-Boy]

Looking at the code it seems that this bit should be getting Retry-After header and using that to calculate the WaitTime, not sure how it is failing, don't see an obvious bug, at least not yet:

[Amwins-Vault-Boy]

Found the bug in the RetryHandlerBase. I've opened a issue for this here: #1590