User Story

As an developer, I want to use the ZK websocket and WebsocketServerPush in a Quarkus application.

Acceptance Criteria

Adding the WebsocketWebappInit to enable similar WS support as other environments

Details

Multiple failure points currently:

Quarkus appear to not trigger the WebsocketFilter, even though it is registered in the WebappInit

Quarkus wraps websocket requests in its own io.undertow.websockets.vertx.VertxWebSocketHttpExchange which always returns null when prompted for session, which means that no session is ever retrieved from Quarkus

Additional config info

In Quarkus / undertow, zk.xml must be deployed under src/main/resources/metainfo/zk/zk.xml

Quarkus / undertow doesn't start WS unless a WS config exist in Java code (not created during WebAppInit), so need to create a Dummy class (attached EnableWebsocket class) to enable WS support

Quarkus require a specific extra library to support WS

enable with quarkus command or in pom directly with 

		<dependency>
		    <groupId>io.quarkus</groupId>
		    <artifactId>quarkus-websockets</artifactId>
		</dependency>