so I have added a SSL certificate to my wildfly 9 and it's working, but I want to configure my standalone.xml to listen to https on port 443 not on port 8443 as the default configuration, so when I update the value ${jboss.https.port:8443} to ${jboss.https.port:443} it generate an error. this what I have in my standalone.xml :
<server name="default-server"><http-listener name="default" socket-binding="http" redirect-socket="https"/><https-listener name="httpsServer" socket-binding="https" security-realm="ApplicationRealm"/><host name="default-host" alias="localhost"><location name="/" handler="welcome-content"/><location name="/images" handler="ImagesDirHandler"/><filter-ref name="server-header"/><filter-ref name="x-powered-by-header"/></host></server><socket-binding-group name="standard-sockets" default-interface="public" port-offset="${jboss.socket.binding.port-offset:0}"><socket-binding name="management-http" interface="management" port="${jboss.management.http.port:9990}"/><socket-binding name="management-https" interface="management" port="${jboss.management.https.port:9993}"/><socket-binding name="ajp" port="${jboss.ajp.port:8009}"/><socket-binding name="http" port="${jboss.http.port:8080}"/><socket-binding name="https" port="${jboss.https.port:8443}"/><socket-binding name="txn-recovery-environment" port="4712"/><socket-binding name="txn-status-manager" port="4713"/><outbound-socket-binding name="mail-smtp"><remote-destination host="localhost" port="25"/></outbound-socket-binding></socket-binding-group>