[dark_photon]

> they will support it only for HTTPS URIs

No. They may do that now but the intention is to support HTTP URIs that force TLS but allow self-signed certificates.

See https://wiki.mozilla.org/Networking/http2

"There is a separate, more experimental, build available that supports HTTP/2 draft-12 for http:// URIs using Alternate-Services (-01) and the "h2-12" profile. Sometimes this is known as opportunistic encryption. This allows HTTP/2 over TLS for http:// URIs in some cases without verification of the SSL certificate. It also allows spdy/3 and spdy/3.1 for http:// URIs using the same mechanism. "

[dragonwriter]

I wasn't familiar with that, but that approach for HTTP URIs doesn't appear to be a spec requirement. Is there any indication that other browser vendors are going to follow that approach with HTTP URIs?