Relative callback URL

[TheBlueMatt]

The callback url in payRequest makes it impossible to create a static implementation of a payRequest server - the server must know its full URI to return in the callback parameter. It would be nice to be able to specify at least server-relative callback URLs so that a static implementation (run behind NGINX or some other TLS proxy) could be built that doesn't need additional LNURL-specific configuration

[fiatjaf]

I agree.

[fiatjaf]

Even though I agree and think it was a design mistake to require full URLs, in most cases you can get away with that on the server side by reading Host, X-Forwarded-Host and all the other million special headers HTTP tools have for these purposes and then rebuilding the original URL of the first request.

[hsjoberg]

I agree, this would be great for easing Lightning Address deployment.

It sounds like it would be backwards incompatible for most if not all wallet implementations.