icCube is embedding a Jetty server (v9.4.8.) and is enabling HTTP/2 support both for clear text communication and SSL. More information can be found about Jetty and HTTP/2 support in the following page.

ALPN Setup

More details can be found about ALPN (Application Layer Protocol Negotiation) setup in the following page

For the sale of simplicity icCube is shipping with lib/alpn-boot-8.1.12.v20180117.jar. If this version fits your JRE version (either Oracle JRE or OpenJDK), then you'll have to specify the bootclasspath as following:

        -Xbootclasspath/p:/opt/icCube/6.6/lib/alpn-boot-8.1.12.v20180117.jar  ...

Next chapter : Apache (Web Server) & icCube.