On Sun, Mar 29, 2015 at 5:17 PM, Madhur Ahuja <[email protected]>
wrote:
> We have built a messaging server using PubNub which listens for chat
> messages from Android device.
> For this, our J2EE based spring, we have created a Pubnub listener (which
> is basically a listening socket)
> as follows. However, we have observed is that our server stops listening
> randomly after few days. The
> Tomcat keeps working fine, but just the socket stops listening. There is
> not error in logs.
>
> Can anyone help in diagnosing this issue? Specifcally, I want to ensure
> that the below design to initiate a listener is durable and not prone
> to errors.
>
Seems the issue is with your application not Tomcat. Maybe try WebSocket?
>
> public class IncomingListener implements ApplicationListener <
> ContextRefreshedEvent > {
>
> @Override
> public void onApplicationEvent(ContextRefreshedEvent event) {
>
> private static volatile boolean isContextLoaded = false;
>
> @Autowired
> ServletContext application;
>
> synchronized(IncomingListener.class) {
>
> if (isContextLoaded) {
> System.out.println("WTF: Not initializing incoming
> listener");
> return;
> }
> try {
> initialiseIncomingListener();
> isContextLoaded = true;
> } catch (JSONException e) {
> e.printStackTrace();
> } catch (AkoshaException e) {
> e.printStackTrace();
> }
>
> }
> }
>
> private void initialiseIncomingListener()
> {
> // Initialize our Pubnub Listener
>
> pubnub.subscribe(serverchannel, new Callback() {
>
> // Subscribe to pubnub
> });
> }
> }
>
--
Marcos | I love PHP, Linux, and Java
<http://javadevnotes.com/java-string-to-double-examples>
