Can Akka-HTTP do HTTP/2.0?

Question

sounds like a straightforward question, but i cannot find the answer (probably because the '2.0' is interpreted as Akka's version when searching for 'how to do HTTP/2.0 with Akka-HTTP').

it seems like akka-http does have a construct for HttpProtocols, but it only has HTTP 1.0 and HTTP 1.1.

Astrograph

AFAIK Akka http is not yet compliant with HTTP/2.0. – Wartow

recently akka-http2-support has appeared on master branch of akka-http project github.com/akka/akka-http . Seems soon it will be available. – Wolff

It does support http2 doc.akka.io/docs/akka-http/current/… – Bulgarian

@Bulgarian The link you provide says "(not yet surfaced in user API)". Akka-http 10.0.5 does not yet support HTTP/2 github.com/akka/akka-http/issues/244 – Gunter

Answer 1

The support is now official. Akka has a server side in preview mode for the moment :

https://doc.akka.io/docs/akka-http/current/server-side/http2.html

Agna

Why is it still in preview mode 2.5 years later? – Kirstenkirsteni

Answer 2

Akka-http 10.0.5 does not support HTTP/2, yet. You can track the work here.

Gunter

Update: "For reference, people interested in tracking progress and helping out should track this tag on github: github.com/akka/akka-http/labels/t%3Ahttp2 " (from github.com/akka/akka-http/issues/111 ) – Gunter

Answer 3

Akka-http 10.1.1 supports server-side HTTP/2 in preview mode (HTTPS only): https://doc.akka.io/docs/akka-http/current/server-side/http2.html

@akauppi's link still shows many features are still in progress (including client side support)

Client http/2 support appears rare among all Scala libraries currently - checkout (for both client and server side http/2): https://github.com/criteo/lolhttp

Mellie