Customizing the conversion from servlet request to http4s request

[asvanberg]

It would be good if there was a way to adapt or extend the current request conversion which is hidden down in Http4sServlet if you want to extract additional attributes or populate the remote user for example.

[rossabaker]

This is a fair idea. Do you have a vision for how you'd like that API to appear?

[asvanberg]

If it was possible to pass a (HttpServletRequest, Request) => ParseResult[Request] or maybe allow effects and return F[ParseResult[Request]] to the builder/apply that would work well I think.