🚀 Enable HTTP2

HTTP2 is now a widely adopted technology, it would be cool to enable it. It has some advantages:

• Single Connection. Only one connection to the server is used to load a website, and that connection remains open as long as the website is open. This reduces the number of round trips needed to set up multiple TCP connections.
• Header Compression. HTTP/2 uses HPACK compressions, which reduces overhead. Many headers were sent with the same values in every request in HTTP/1.1.
• Multiplexing. Multiple requests are allowed at the same time, on the same connection. Previously, with HTTP/1.1, each transfer would have to wait for other transfers to complete

There are two steps to enable it:

• in application_prod.yml and application_dev.yml, the parameter jhipster.http.version has to be changed to V_2_0
• the nginx configuration has to be updated to support http2. It should be as easy as adding http2 to the SSL listener, something like listen 443 ssl http2;

[krusche]

We use it already 😃 Have a look into the chrome console when connecting to test or production server, it is handled by nginx, therefore there is no configuration in the Artemis Server any more. I am not sure how internal communication between nginx and Artemis is handled and whether we use http2 here or not. Maybe @jpbernius can answer this…

[jpbernius]

Both jhipster and nginx are configured to use http2.