Networking/Archive/http2

HTTP/2 for Firefox is currently under development.

HTTP/2 draft support is included in routine builds of firefox, but is disabled by default. To get the most up to date support you should use the nightly channel.

To enable, go to about:config in the location bar and set network.http.spdy.enabled.http2draft and security.ssl.enable_alpn to true

The current implementation is of draft-12 with compression-07

Firefox will only be implementing HTTP/2 over TLS - and so far that means for https:// schemed URLs (see below for http:// with TLS support). It does enforce the protocol's >= TLS 1.1 requirement - if a server negotiates HTTP/2 with a lower TLS version it is treated as a protocol error. (there is a preference for changing that for testing purposes if you need it.)

This build supports basic push and continuations and both alpn and npn.

feedback of any sort welcomed to pmcmanus@mozilla.com and hurley@mozilla.com

There is a separate, more experimental, build available that supports HTTP/2 draft-12 for http:// URIs using Alternate-Services (-01) and the "h2" 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.

That code is at https://hg.mozilla.org/try/rev/dd2fd4e40ead and https://github.com/mcmanus/gecko-dev/tree/oe05 with downloads at  https://ftp-ssl.mozilla.org/pub/mozilla.org/firefox/try-builds/mcmanus@ducksong.com-c53e2534c73b