webtier@glassfish.java.net

GF 3.1.1 Weocket support - cannot enable WebSockets

From: <forums_at_java.net>
Date: Tue, 17 Jan 2012 08:33:16 -0600 (CST)

Hi,

i want to develop an websocket application. I already developed an websocket
client using weberknecht-websockets and tested it with an server
implementation using jetty webserver and it works great!

Now i want to try out glassfish. I read that glassfish 3.1.1 supports
websockets. So i googled a lot and found a few tutorials which describes how
to implement the server side for websockets for glassfish.

My Server Side Implementation looks like:

*WebSocketServlet:*

[java]

package de.gfwebsocket;
import java.io.IOException;
import java.io.PrintWriter;
import java.text.SimpleDateFormat;
import java.util.Date;
import javax.servlet.ServletConfig;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import com.sun.grizzly.websockets.WebSocketEngine;
/**
 * Servlet implementation class WebSocketServlet
 */
public class WebSocketServlet extends HttpServlet {
    private static final long serialVersionUID = 1L;
   
    public WebSocketServlet() {
        super();
        // TODO Auto-generated constructor stub
    }
   
    public void init(ServletConfig config) throws ServletException {
        // TODO Auto-generated method stub
        WebSocketEngine.getEngine().register(new
WebSocketConnection());
    }
   
    protected void doGet(HttpServletRequest request, HttpServletResponse
response) throws ServletException, IOException {
        SimpleDateFormat format = new SimpleDateFormat("dd.MM.yyyy
HH:mm:ss");
        PrintWriter writer = response.getWriter();
        writer.println("<html>");
        writer.println("<head><title>Hello World
Servlet</title></head>");
        writer.println("<body>");
        writer.println("<h1>Es ist der " + format.format(new Date()) +
" Uhr</h1>");
        writer.println("<body>");
        writer.println("</html>");
        writer.flush();
        writer.close();
    }   
    protected void doPost(HttpServletRequest request, HttpServletResponse
response) throws ServletException, IOException {
        // TODO Auto-generated method stub
    }
}
[/java]

*WebSocketConnection*

[java]package de.gfwebsocket;
import com.sun.grizzly.tcp.Request;
import com.sun.grizzly.websockets.WebSocket;
import com.sun.grizzly.websockets.WebSocketApplication;
import com.sun.grizzly.websockets.WebSocketListener;
public class WebSocketConnection extends WebSocketApplication{
    @Override
    public WebSocket createSocket(WebSocketListener... listeners) {
        // TODO Auto-generated method stub       
        return new WebSocketDataProcess(listeners);
    }
    @Override
    public void onClose(WebSocket socket) {
        // TODO Auto-generated method stub       
        super.onClose(socket);
    }
    @Override
    public void onConnect(WebSocket socket) {
        // TODO Auto-generated method stub
        super.onConnect(socket);
    }
    @Override
    public void onMessage(WebSocket socket, String text) {
        socket.send(text);           
        //super.onMessage(socket, text);
    }       
   
   
     // return true if you want to communicate over websocket otherwise
return false     
    @Override
    public boolean isApplicationRequest(Request arg0) {
        // TODO Auto-generated method stub
        return true;
    }   
}[/java]

*WebSocketDataProcess*

[java]

package de.gfwebsocket;
import com.sun.grizzly.websockets.BaseServerWebSocket;
import com.sun.grizzly.websockets.WebSocketListener;
public class WebSocketDataProcess extends BaseServerWebSocket{   
   
    public WebSocketDataProcess(WebSocketListener... listeners) {
        // TODO Auto-generated constructor stub
        super(listeners);       
    }
}[/java]

I exported this project as an .war-File and deployed it in GlassFish via web
console. I tried to reach it by using firefox and it showed me the actual
time as expected.

But if i try my client to connect with the websocket server, it failed. I get
an exception on client side: "connection failed: unknown status code 200".
My Client works with WebSocket. As i said, i tested it with a jetty websocket
server implementation.

So i tried to enable websockets in glassfish 3.1.1. I started the server with
"./asadmin start-server" and then i tried "./asadmin set
configs.config.server-config.network-config.protocols.protocol.http-listener-1.http.websockets-support-enabled=true".
But "set" failed and it does not work.

 

So, can anybody help me?

Thank you for your help in advance.

Best regards

hsch

 


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