Not possible to specify port in rewritevalve rewrite rule, following fails:
RewriteRule .* https://:%

{HTTP_HOST}:8443%{REQUEST_URI} [R,L]
(see link directly below for correctly formatted version)
https://github.com/ams10961/eap645ga-weld1131-rewrite/blob/master/src/main/webapp/WEB-INF/rewrite.properties.fails

with following exception
04:46:47,645 ERROR [org.apache.catalina.core] (ServerService Thread Pool – 56) JBWEB001097: Error starting context /eap645ga: java.lang.IllegalArgumentException:
https://%{HTTP_HOST}

:8443%

{REQUEST_URI}
at org.jboss.web.rewrite.Substitution.parse(Substitution.java:195) [jbossweb-7.5.7.Final-redhat-1.jar:7.5.7.Final-redhat-1]
at org.jboss.web.rewrite.RewriteRule.parse(RewriteRule.java:45) [jbossweb-7.5.7.Final-redhat-1.jar:7.5.7.Final-redhat-1]
at org.jboss.web.rewrite.RewriteValve.parse(RewriteValve.java:251) [jbossweb-7.5.7.Final-redhat-1.jar:7.5.7.Final-redhat-1]

(see link directly below for correctly formatted version)
https://github.com/ams10961/eap645ga-weld1131-rewrite/blob/master/logs/jbosseap-rewrite-port-local.log

Have not been able to find a workaround for this.

Some debug logging for org.jboss.web.rewrite.* classes would be super useful too, e.g. dump variables, e.g. %{REQUEST_URI}

, whether a condition matched, values before and after rewrite.

Key files to recreate:
https://github.com/ams10961/eap645ga-weld1131-rewrite/blob/master/pom.xml
https://github.com/ams10961/eap645ga-weld1131-rewrite/blob/master/src/main/webapp/WEB-INF/beans.xml
https://github.com/ams10961/eap645ga-weld1131-rewrite/blob/master/src/main/webapp/WEB-INF/web.xml
https://github.com/ams10961/eap645ga-weld1131-rewrite/blob/master/src/main/webapp/WEB-INF/jboss-web.xml
https://github.com/ams10961/eap645ga-weld1131-rewrite/blob/master/src/main/webapp/WEB-INF/rewrite.properties.fails
https://github.com/ams10961/eap645ga-weld1131-rewrite/blob/master/logs/jbosseap-rewrite-port-local.log