[jboss-jira] [JBoss JIRA] (WFLY-6984) Improve log message for Undertow HTTP2 when ALPN not available

[Stuart Douglas (JIRA)]

    [ https://issues.jboss.org/browse/WFLY-6984?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13283080#comment-13283080 ] 

Stuart Douglas commented on WFLY-6984:
--------------------------------------

This message is not really accurate any more, you will probably only get it on an IBM JDK, as our new method will take precedence over Jetty ALPN, and should work on any JVM that Jetty works on (although this could change in future). 

Also for WF 11 we will support OpenSSL ALPN, which will be the only way to do ALPN on IBM JDK.

> Improve log message for Undertow HTTP2 when ALPN not available
> --------------------------------------------------------------
>
>                 Key: WFLY-6984
>                 URL: https://issues.jboss.org/browse/WFLY-6984
>             Project: WildFly
>          Issue Type: Enhancement
>          Components: Web (Undertow)
>    Affects Versions: 10.1.0.Final
>            Reporter: Jan Stourac
>            Assignee: Stuart Douglas
>            Priority: Trivial
>
> In case that Jetty ALPN is not available and HTTP2 is configured on HTTPS listener, Undertow prints error log message about it. Please direct user to documentation and also advice him how to get rid of this message otherwise.
> Proposed change to:
> {code}
> Jetty ALPN not found on the boot class path. HTTP2 and SPDY are not available. Please check documentation how to configure Undertow to use HTTP2 or disable HTTP2 for HTTPS listeners to avoid this error message.
> {code}



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