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POJetty WebSocket
 

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    <p>I have question about jetty 8.1.10.v20130312 and WebSocket. Here is the code:</p> <p><strong>web.xml</strong> </p> <pre class="lang-xml prettyprint-override"><code>&lt;listener&gt; &lt;listener-class&gt;ru.websocket.StartupListener&lt;/listener-class&gt; &lt;/listener&gt; </code></pre> <p><strong>StartupListener.java</strong> </p> <pre class="lang-java prettyprint-override"><code>public class StartupListener implements ServletContextListener { public void contextDestroyed(ServletContextEvent arg0) { } public void contextInitialized(ServletContextEvent arg0) { Server server = new Server(8081); EventHandler handler = new EventHandler(); server.setHandler(handler); try { server.start(); System.out.println("Server started"); } catch (Exception e) { e.printStackTrace(); } } } </code></pre> <p><strong>EventHandler.java</strong></p> <pre class="lang-java prettyprint-override"><code>public class EventHandler extends WebSocketHandler { public WebSocket doWebSocketConnect(HttpServletRequest arg0, String arg1) { return new EventWebSocket(); } } </code></pre> <p><strong>EventWebSocket.java</strong></p> <pre class="lang-java prettyprint-override"><code>public class EventWebSocket implements WebSocket { public void onClose(int arg0, String arg1) { System.out.println("closed"); } public void onOpen(Connection arg0) { System.out.println("opened"); } } </code></pre> <p>When i want to connect from javascript, i have a error message </p> <pre><code>2013-07-15 18:02:02.433:WARN:oejs.AbstractHttpConnection:/ java.lang.NullPointerException at org.eclipse.jetty.websocket.WebSocketFactory.upgrade(WebSocketFactory.java:238) at org.eclipse.jetty.websocket.WebSocketFactory.acceptWebSocket(WebSocketFactory.java:396) at org.eclipse.jetty.websocket.WebSocketHandler.handle(WebSocketHandler.java:43) at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:116) at org.eclipse.jetty.server.Server.handle(Server.java:368) at org.eclipse.jetty.server.AbstractHttpConnection.handleRequest(AbstractHttpConnection.java:489) at org.eclipse.jetty.server.AbstractHttpConnection.headerComplete(AbstractHttpConnection.java:942) at org.eclipse.jetty.server.AbstractHttpConnection$RequestHandler.headerComplete(AbstractHttpConnection.java:1004) at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:640) at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:235) at org.eclipse.jetty.server.AsyncHttpConnection.handle(AsyncHttpConnection.java:82) at org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEndPoint.java:628) at org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEndPoint.java:52) at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:608) at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:543) at java.lang.Thread.run(Thread.java:662) </code></pre> <p>About build, i use maven, java version 1.6.31, jetty version 8.1.10.v20130312. <strong>Important</strong> I want to start new Jetty server with port 8081 from Jetty on port 8080 (StartupListener).</p> <p>Thanks for answer.</p>
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    1. COThe exception occurs also when using Websockets within an osgi framework in Jetty as servlet container. Since the class HttpConnection is loaded twice, the static HttpConnection-ThreadLocal for the osgi framework is empty. To solve it, expose first the necessary libs for the WebAppContext (see http://wiki.eclipse.org/Jetty/Reference/Jetty_Classloading) and then export them for the osgi framework (for example via equinox extensionbundle).
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