CODEWITHSUNDEEP
springtomcatwebsocket
vdenotaris
vdenotaris

Reputation: 13637

Websocket error by closing a page via browser: "An established connection was aborted by the software in your host machine"

I've developed a real time notification system with Spring 4. The code is available on Github: github.com/vdenotaris/Spring-Messaging

On my client, I defined a WebSocket connection by using a script as follows:

<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
    <head>
        <title>Hello World!</title>
        <script src="/static/assets/js/stomp.min.js"></script>
        <script src="http://cdn.sockjs.org/sockjs-0.3.min.js"></script>
        <script>
            var stompClient = null;

            function setConnected(connected) {
                document.getElementById('connect').disabled = connected;
                document.getElementById('disconnect').disabled = !connected;
                document.getElementById('conversationDiv').style.visibility = connected ? 'visible' : 'hidden';
                document.getElementById('response').innerHTML = '';
            }

            function connect() {
                var socket = new SockJS('/notifications');
                stompClient = Stomp.over(socket);
                stompClient.connect({}, function(frame) {
                    setConnected(true);
                    console.log('Connected: ' + frame);
                    stompClient.subscribe('/queue/lrt-update', function(message){
                        showMessage(message.body);
                    });
                    stompClient.subscribe('/user/queue/lrt-update', function(message){
                        showMessage(message.body);
                    });
                });
            }

            function disconnect() {
                stompClient.disconnect();
                setConnected(false);
                console.log("Disconnected");
            }

            function showMessage(message) {
                var response = document.getElementById('response');
                var p = document.createElement('p');
                p.style.wordWrap = 'break-word';
                p.appendChild(document.createTextNode(message));
                response.appendChild(p);
            }
        </script>
    </head>
    <body>
        <div>
            <button id="connect" onclick="connect();">Connect</button>
            <button id="disconnect" disabled="disabled" onclick="disconnect();">Disconnect</button>
        </div>
        <div id="conversationDiv">
            <p id="response"></p>
        </div>
    </body>
</html>

If I close the connection by pressing the Disconnect button, all works fine, but if I quit the whole page via browser, the application back-end throws some exceptions:

java.io.IOException: java.util.concurrent.ExecutionException: java.io.IOException: An established connection was aborted by the software in your host machine
    at org.apache.tomcat.websocket.WsRemoteEndpointImplBase.startMessageBlock(WsRemoteEndpointImplBase.java:243)
    at org.apache.tomcat.websocket.WsSession.sendCloseMessage(WsSession.java:487)
    at org.apache.tomcat.websocket.WsSession.onClose(WsSession.java:441)
    at org.apache.tomcat.websocket.WsFrameBase.processDataControl(WsFrameBase.java:324)
    at org.apache.tomcat.websocket.WsFrameBase.processData(WsFrameBase.java:270)
    at org.apache.tomcat.websocket.WsFrameBase.processInputBuffer(WsFrameBase.java:116)
    at org.apache.tomcat.websocket.server.WsFrameServer.onDataAvailable(WsFrameServer.java:54)
    at org.apache.tomcat.websocket.server.WsHttpUpgradeHandler$WsReadListener.onDataAvailable(WsHttpUpgradeHandler.java:194)
    at org.apache.coyote.http11.upgrade.AbstractServletInputStream.onDataAvailable(AbstractServletInputStream.java:189)
    at org.apache.coyote.http11.upgrade.AbstractProcessor.upgradeDispatch(AbstractProcessor.java:92)
    at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:605)
    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1720)
    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1679)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
    at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
    at java.lang.Thread.run(Thread.java:744)
Caused by: java.util.concurrent.ExecutionException: java.io.IOException: An established connection was aborted by the software in your host machine
    at org.apache.tomcat.websocket.FutureToSendHandler.get(FutureToSendHandler.java:102)
    at org.apache.tomcat.websocket.WsRemoteEndpointImplBase.startMessageBlock(WsRemoteEndpointImplBase.java:238)
    ... 16 common frames omitted
Caused by: java.io.IOException: An established connection was aborted by the software in your host machine
    at sun.nio.ch.SocketDispatcher.write0(Native Method)
    at sun.nio.ch.SocketDispatcher.write(SocketDispatcher.java:51)
    at sun.nio.ch.IOUtil.writeFromNativeBuffer(IOUtil.java:93)
    at sun.nio.ch.IOUtil.write(IOUtil.java:65)
    at sun.nio.ch.SocketChannelImpl.write(SocketChannelImpl.java:487)
    at org.apache.tomcat.util.net.NioChannel.write(NioChannel.java:123)
    at org.apache.tomcat.util.net.NioSelectorPool.write(NioSelectorPool.java:185)
    at org.apache.coyote.http11.upgrade.NioServletOutputStream.doWriteInternal(NioServletOutputStream.java:93)
    at org.apache.coyote.http11.upgrade.NioServletOutputStream.doWrite(NioServletOutputStream.java:60)
    at org.apache.coyote.http11.upgrade.AbstractServletOutputStream.writeInternal(AbstractServletOutputStream.java:125)
    at org.apache.coyote.http11.upgrade.AbstractServletOutputStream.write(AbstractServletOutputStream.java:92)
    at org.apache.tomcat.websocket.server.WsRemoteEndpointImplServer.onWritePossible(WsRemoteEndpointImplServer.java:94)
    at org.apache.tomcat.websocket.server.WsRemoteEndpointImplServer.doWrite(WsRemoteEndpointImplServer.java:81)
    at org.apache.tomcat.websocket.WsRemoteEndpointImplBase.writeMessagePart(WsRemoteEndpointImplBase.java:393)
    at org.apache.tomcat.websocket.WsRemoteEndpointImplBase.startMessage(WsRemoteEndpointImplBase.java:287)
    at org.apache.tomcat.websocket.WsRemoteEndpointImplBase.startMessageBlock(WsRemoteEndpointImplBase.java:233)
    ... 16 common frames omitted

How can I fix it?

Note: I'm using Tomcat 7 as Application Server.

Upvotes: 4

Views: 3033

Answers (2)

Prasad Babu Dandu
Prasad Babu Dandu

Reputation: 33

I had the same problem even though it doesnt harm actual functionality. I added a method with annotate @OnError to end point class which solved my problem

@OnError
public void onError(Throwable error) {

}

Upvotes: 2

dennisr2000
dennisr2000

Reputation: 46

I was getting this same error. I'm using the tomcat implementation of websocket server. I was able to make the error go away by calling .getMessage() on the error passed in by onError:

@OnError
public void onError(Throwable error)
{
    Logger.getLogger(MyServer.class.getName()).log(Level.SEVERE, null, error.getMessage());
}

If I remove the .getMessage call like this:

Logger.getLogger(MyServer.class.getName()).log(Level.SEVERE, null, error);

the error appears. Call .getMessage() and the error disappears.

Upvotes: 2

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