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[jetty-users] Jetty and WebSockets
Hi,


I have a embedded jetty (9 last version) app server on a jar, this jar starts and initialise a server for http and https and deploys a war file.

The war file has JAX RS jersey web services that are developed by annotations and are initialised by a servlet on web.xml like this:

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://java.sun.com/xml/ns/javaee"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
 http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
         version="2.5">

    <servlet>
        <servlet-name>ServletAdaptor</servlet-name>
        <servlet-class>com.sun.jersey.spi.container.servlet.ServletContainer</servlet-class>
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>ServletAdaptor</servlet-name>
        <url-pattern>/resources/*</url-pattern>
    </servlet-mapping>
    <session-config>
        <session-timeout>
            30
        </session-timeout>
    </session-config>
    <welcome-file-list>
        <welcome-file>index.jsp</welcome-file>
    </welcome-file-list>

</web-app>
------------------------------------------------------------------------------------------------------------------------------------------------------------


When I start the server everything is working ok and I can see on the log the WebService "endpoints" up. Now I would like to do the same with web sockets, so I added now as a library of my war all the web socket jars of jetty, then I created this 2 classes:

One that register the endpoints.
One as a test endpoint.

------------------------------------------------------------------------------------------------------------------------------------------------------------

import org.eclipse.jetty.websocket.servlet.WebSocketServlet;
import org.eclipse.jetty.websocket.servlet.WebSocketServletFactory;


public class JettyWebSocketServlet extends WebSocketServlet {
    @Override
    public void configure(WebSocketServletFactory factory) {
        factory.register(WebSocketEchoTest.class);
    }
}

------------------------------------------------------------------------------------------------------------------------------------------------------------------------

@WebSocket
public class WebSocketEchoTest {
    private RemoteEndpoint remote;

    @OnWebSocketConnect
    public void onConnect(Session session) {
        System.out.println("WebSocket Opened");
        this.remote = session.getRemote();
    }

    @OnWebSocketMessage
    public void onMessage(String message) {
        System.out.println("Message from Client: " + message);
        try {
            remote.sendString("Hi Client");
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    @OnWebSocketClose
    public void onClose(int statusCode, String reason) {
        System.out.println("WebSocket Closed. Code:" + statusCode);
    }
}

------------------------------------------------------------------------------------------------------------------------------------------------------------------------

So now I would like to do as in JAX RS… so I changed the web.xml to this:

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://java.sun.com/xml/ns/javaee"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
 http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
         version="2.5">

    <servlet>
        <servlet-name>ServletAdaptor</servlet-name>
        <servlet-class>com.sun.jersey.spi.container.servlet.ServletContainer</servlet-class>
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>ServletAdaptor</servlet-name>
        <url-pattern>/resources/*</url-pattern>
    </servlet-mapping>
    <servlet>
        <servlet-name>servlet</servlet-name>
        <servlet-class>integra.websocket.JettyWebSocketServlet</servlet-class>
    </servlet>
    <servlet-mapping>
        <servlet-name>servlet</servlet-name>
        <url-pattern>/websockets/*</url-pattern>
    </servlet-mapping>
    <session-config>
        <session-timeout>
            30
        </session-timeout>
    </session-config>
    <welcome-file-list>
        <welcome-file>index.jsp</welcome-file>
    </welcome-file-list>

</web-app>
------------------------------------------------------------------------------------------------------------------------------------------------------------------------

I think this should be ok and initialise all registered WebSocket endpoints… but this is never executed (JettyWebSocketServlet) ….
If this would work, I think I should have access to ws:// and wss://  on the same ports that the http and https server in the /websockets/ context, am I right?


any help on this??? is this the correct approach??

thanks!!


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