Configuring WildFly behind a reverse proxy with TLS - https://mirocupak.com/configuring-wildfly-behind-a-reverse-proxy-with-tls/

ssl.cli

# WildFly reverse proxy setup script.
# Run with: $WILDFLY_HOME/bin/jboss-cli.sh --connect --file=ssl.cli

batch
/subsystem=undertow/server=default-server/http-listener=default:write-attribute(name=redirect-socket,value=proxy-https)
/subsystem=undertow/server=default-server/http-listener=default:write-attribute(name=proxy-address-forwarding,value=true)
/socket-binding-group=standard-sockets/socket-binding=proxy-https:add(port=443)
run-batch