When I run Play Framework using https port, application starts on two ports - default (9000) and https (443). How to disabled default 9000 port and run the Play application
Try using the http.port=disabled flag
play -Dhttp.port=disabled -Dhttps.port=443 -Dhttps.keyStore=/path/to/keystore -Dhttps.keyStorePassword=password start
Unfortunately this can't be done in the same way in the Gradle Play Plugin, See: https://github.com/gradle/playframework/issues/85