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POTomcat WebSocket error
 

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    <p>I followed this <a href="https://gist.github.com/chitan/3063774" rel="nofollow">link</a> to make websocket server using tomcat. When I tried to access the websocket my firefox said it can't establish a connection.</p> <p>Here is my code</p> <pre><code>public class WsChatServlet extends WebSocketServlet { private static final long serialVersionUID = 1L; private static ArrayList&lt;MyMessageInbound&gt; mmiList = new ArrayList&lt;MyMessageInbound&gt;(); @Override protected StreamInbound createWebSocketInbound(String string) { System.out.println("CreateWebSocketInbound()"); return new MyMessageInbound(); } private class MyMessageInbound extends MessageInbound { WsOutbound myoutbound; @Override protected void onBinaryMessage(ByteBuffer bb) throws IOException { System.out.println("onBinaryMessage()"); } @Override protected void onTextMessage(CharBuffer cb) throws IOException { System.out.println("Accept Message : "+ cb); for (MyMessageInbound mmib : mmiList) { CharBuffer buffer = CharBuffer.wrap(cb); mmib.myoutbound.writeTextMessage(CharBuffer.wrap("Hello!")); mmib.myoutbound.flush(); } } @Override protected void onOpen(WsOutbound outbound) { System.out.println("onOpen()"); try { System.out.println("Open Client."); this.myoutbound = outbound; mmiList.add(this); outbound.writeTextMessage(CharBuffer.wrap("Hello!")); } catch (IOException ex) { Logger.getLogger(WsChatServlet.class.getName()).log(Level.SEVERE, null, ex); } } @Override protected void onClose(int status) { System.out.println("Close Client."); mmiList.remove(this); } } </code></pre> <p>Here is the server log </p> <pre><code>24 Apr 13 22:53:09 org.apache.catalina.core.StandardWrapperValve invoke SEVERE: Servlet.service() for servlet [WsChatServlet] in context with path [/HelloWebSocket] threw exception java.lang.ClassCastException: org.netbeans.modules.web.monitor.server.MonitorRequestWrapper cannot be cast to org.apache.catalina.connector.RequestFacade at org.apache.catalina.websocket.WebSocketServlet.doGet(WebSocketServlet.java:126) at javax.servlet.http.HttpServlet.service(HttpServlet.java:621) at javax.servlet.http.HttpServlet.service(HttpServlet.java:722) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) at org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.java:393) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:225) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:169) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:168) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98) at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:927) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407) at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:999) at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:565) at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:307) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) at java.lang.Thread.run(Thread.java:662) </code></pre> <p>How to solve this problem and how to make the log inside code format?</p>
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    1. USRaydhitya Yoseph
    1. USRaydhitya Yoseph
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      1. VTDownMod
    1. COIf you post your code that would be helpful
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      1. USToni Toni Chopper
    2. COWhich tomcat version you are using? I recommend to use apache tomcat 7.0.42 which is quit stable with WebSockets.
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      1. USBadal
 

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