how to make wso2ei 6.6.0 to use http2 protocl?

[gennosuke]

I'm using wso2ei 6.6.0 and my manager wants to set all requests to use http2 protocol, but I can't find a way how to make wso2 use the http2. I'm aware that I can use a web server or load balancer such as haproxy between them but I need to make passthrough to listen on http2 protocol.also I need to send all requests to the backend on http2 protocol any idea how I can handle this situation?!

[LLC-BigInt]

I think this is question actual for APIM too

[gennosuke]

I think this is question actual for APIM too

maybe but i need this on wso2ei. do you have any idea how can i handle this?!

[LLC-BigInt]

Can you add a test case or something else? (where can be view message or error)

[gennosuke]

actually i have no idea how to put this through , i just tried to make tomcat to listen on http2 and it wotked. in $HOME/repository/conf/tomcat/catalina-server.xml , () but when i set a port listener in $HOME/repository/conf/axis2/axis2.xml in section ,i can't set any http2 protocol or at least i can't find a way .
when i curl using (curl --http2 -I -v mydomain.com) it won't accept http2.
could i make my point or should i explain it in another way?