Is there a cleaner way to fallback to initial Host?

[bnssoftware]

If a host falls through and doesn't need to be proxied based on set rules, rather than having to do this:

return "https://" + context.Request.Host.Value;

Can there be a cleaner way to just fallback to the initial request host?

[twitchax]

This library is just a middlware, and you can place other routes in the middleware chain before this middleware.

You should add whatever routes/rules that you want the host to handle as Use middleware before the UseProxy or RunProxy middleware.