This post was originally published in November 2013 and has been updated on February 3rd, 2016 for the following reasons: Use the newest final version of WildFly 10.0.0 App deployed in a Docker Container at http://javaee7-websocket.mgreau.com thanks to Clever Cloud PaaS! This app is not anymore available on OpenShift Overview This blog post describes the Java API for WebSocket Protocol (JSR 356) (