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Add protocol to "Now listening on" logged at startup

See original GitHub issue

On startup ASP.NET Core will log the addresses it is listening on. http vs https gives insight into whether the endpoint is secured with TLS. However there is no way to understand what protocols each endpoint supports. It would be useful when debugging connection errors to have an endpoint’s protocol logged.

For example:

Now listening on https://localhost:5000 (HTTP/1.1, HTTP/2)
Now listening on http://localhost:5001 (HTTP/2)

Issue Analytics

State:
Created 4 years ago
Reactions:4
Comments:8 (8 by maintainers)

Top GitHub Comments

1reaction

analogrelaycommented, Oct 23, 2019

We’ll keep this around to talk about during Bedrock work (cc @davidfowl).

1reaction

Tratchercommented, Oct 23, 2019

This isn’t possible with the current infrastructure. Hosting makes these logs and it only has access to IServerAddresses containing a simple list of urls.

To do this we’d have to redesign it so that the servers issued these logs. Even then it would only work on Kestrel. IIS and HttpSys don’t have access to this information at startup, only per request.