Yarp adds a trailing slash to destination

[czobrisky]

We've configured destinations and yarp is adding a trailing slash to it. Why is it making this assumption and can we stop it from happening?
Eg.

http://localhost/path is converted to http://localhost/path/.

[Tratcher]

The proxied request path is the combination of the destination address and the original request path. In your example the request path is "/", and the destination address is "http://localhost/path", so you get "http://localhost/path/".

You can adjust this with a request transform:
https://microsoft.github.io/reverse-proxy/articles/transforms.html#addrequesttransform

[czobrisky]

Even if my request is sent to "https://localhost:8080", it seems somewhere a "/" is being added. Is that in Kestrel or YARP or is Invoke-WebRequest adding a "/"?

[Tratcher]

In HTTP the Path is never empty. If you look at it on the wire, https://localhost:8080 is sent as:

GET / HTTP/1.1
Host: localhost:8080

[czobrisky]

Thank you for clarifying.