Connection drops for some users due to an unknown cause

Hi,

We're currently beta-testing our brand new Openfire and StropheJs-based AJAX Chat and some of our users are expierencing problems with the connection.

They tell us, that they have every few minutes connection drops (some stay longer, some stay only some minutes) and they can sometimes still send messages, but do not receive any msgs anymore. After they reconnect, they see their previously sent but not received messages.

We have no clue what this could cause.

We currently have Openfire 3.7.0 running on one machine (no clustering, no connection managers etc.).

The following appears in our warn log:

2011.06.09 13:46:09 Client provided invalid session: 157d91ed. [192.168.189.95]
2011.06.09 13:46:10 Packets could not be found for session 222b74ec cannotbe delivered to client
2011.06.09 13:46:12 Client provided invalid session: d815c53a. [192.168.189.95]
2011.06.09 13:46:31 Client provided invalid session: 50fc92e. [192.168.189.78]
2011.06.09 13:46:49 Client provided invalid session: 5694e3a5. [192.168.189.95]
2011.06.09 13:46:59 Client provided invalid session: ca988449. [192.168.189.95]
2011.06.09 13:47:10 Packets could not be found for session 2dcef0c1 cannotbe delivered to client
2011.06.09 13:47:33 Client provided invalid session: 105fe10b. [192.168.189.95]
2011.06.09 13:47:34 Client provided invalid session: 2a059ccc. [192.168.189.95]
2011.06.09 13:47:40 Packets could not be found for session 132bdb68 cannotbe delivered to client
2011.06.09 13:47:44 Client provided invalid session: 9e1fbd8e. [192.168.189.78]
2011.06.09 13:48:13 Client provided invalid session: fd01bb10. [192.168.189.95]
2011.06.09 13:48:21 Client provided invalid session: 6e78ac39. [192.168.189.95]
2011.06.09 13:48:45 Packets could not be found for session ddffdd77 cannotbe delivered to client
2011.06.09 13:48:45 Client provided invalid session: 2d1449e2. [192.168.189.95]
2011.06.09 13:49:19 Client provided invalid session: 4f0800c7. [192.168.189.95]
2011.06.09 13:50:10 Packets could not be found for session 813299e2 cannotbe delivered to client
2011.06.09 13:50:16 Packets could not be found for session bfc76623 cannotbe delivered to client
2011.06.09 13:50:31 Client provided invalid session: 8c816f79. [192.168.189.95]
2011.06.09 13:50:35 Client provided invalid session: 91a6a2d2. [192.168.189.95]
2011.06.09 13:53:16 Client provided invalid session: 9f170508. [192.168.189.95]
2011.06.09 13:53:33 Client provided invalid session: 699f020c. [192.168.189.95]
2011.06.09 13:53:33 Client provided invalid session: 699f020c. [192.168.189.95]
2011.06.09 13:53:39 Client provided invalid session: e9032580. [192.168.189.95]
2011.06.09 13:53:41 Client provided invalid session: 132bdb68. [192.168.189.95]
2011.06.09 13:54:10 Packets could not be found for session 94755721 cannotbe delivered to client
2011.06.09 13:55:40 Packets could not be found for session 2f1b09d3 cannotbe delivered to client
2011.06.09 13:55:40 Packets could not be found for session d84b9f67 cannotbe delivered to client
2011.06.09 13:55:58 Client provided invalid session: 2c03ec3f. [192.168.189.95]
2011.06.09 13:56:10 Packets could not be found for session fa70eceb cannotbe delivered to client
2011.06.09 13:56:27 Packets could not be found for session 6eb4b53c cannotbe delivered to client
2011.06.09 13:56:28 Client provided invalid session: 9c60c5d0. [192.168.189.95]
2011.06.09 13:56:46 Client provided invalid session: aa469198. [192.168.189.95]
2011.06.09 13:57:15 Client provided invalid session: e3541560. [192.168.189.95]
2011.06.09 13:57:25 Client provided invalid session: e3541560. [192.168.189.95]
2011.06.09 13:57:40 Packets could not be found for session a0bb2219 cannotbe delivered to client
2011.06.09 13:57:45 Client provided invalid session: 3e01d4bc. [192.168.189.78]
2011.06.09 13:58:03 Client provided invalid session: f01d646a. [192.168.189.78]
2011.06.09 13:58:19 Client provided invalid session: 325de39a. [192.168.189.78]
2011.06.09 13:58:41 Client provided invalid session: 925a8cb. [192.168.189.95]
2011.06.09 13:58:48 Client provided invalid session: fc56e0e2. [192.168.189.95]
2011.06.09 13:58:49 Client provided invalid session: fc56e0e2. [192.168.189.95]
2011.06.09 13:58:58 Client provided invalid session: 5470e04e. [192.168.189.95]
2011.06.09 13:59:40 Client provided invalid session: a5b48041. [192.168.189.95]
2011.06.09 13:59:49 Client provided invalid session: 12f21bbe. [192.168.189.95]
2011.06.09 14:00:20 Client provided invalid session: 17fda9a2. [192.168.189.95]
2011.06.09 14:00:33 Client provided invalid session: 21b19ece. [192.168.189.95]
2011.06.09 14:00:56 Client provided invalid session: dd23c4bc. [192.168.189.95]
2011.06.09 14:01:13 Client provided invalid session: 7cfa04b. [192.168.189.95]
2011.06.09 14:01:56 Client provided invalid session: 43da9088. [192.168.189.95] 

Sometimes also this appears:

Error for /http-bind/               

java.lang.InternalError: Could not locate connection: 1026551200                                 at org.jivesoftware.openfire.http.HttpSession.getResponse(HttpSession.java:583)                                 at org.jivesoftware.openfire.http.HttpBindServlet.handleSessionRequest(HttpBindServlet.java:285)                                 at org.jivesoftware.openfire.http.HttpBindServlet.parseDocument(HttpBindServlet.java:168)                                 at org.jivesoftware.openfire.http.HttpBindServlet.doPost(HttpBindServlet.java:137)                                     at javax.servlet.http.HttpServlet.service(HttpServlet.java:727)                                     at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)                                     at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:530)                                     at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1216)                                     at org.eclipse.jetty.continuation.ContinuationFilter.doFilter(ContinuationFilter.java:110)                                     at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1187)                                     at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:425)                                     at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:931)                                     at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:362)                                     at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:867)                                     at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:117)                                     at org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:245)                                     at org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:126)                                     at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:113)                                     at org.eclipse.jetty.server.Server.handle(Server.java:334)                                     at org.eclipse.jetty.server.HttpConnection.handleRequest(HttpConnection.java:559)                                     at org.eclipse.jetty.server.HttpConnection$RequestHandler.content(HttpConnection.java:1007)                                     at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:747)                                     at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:209)                                     at org.eclipse.jetty.server.HttpConnection.handle(HttpConnection.java:406)                                     at org.eclipse.jetty.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:462)                                     at org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:436)                                     at java.lang.Thread.run(Thread.java:662)                

We already found similar issues from other users of this forum but the threads are all very old or do not have any solution.

For testing we configured div. things for the httpbind settings, take a look at our current setup:

Does anyone have an idea what the problem of this could be?

I would really appreciate if someone could give me any hints or ideas how to fix or debug this.

We also thought that it could be a Problem on the user's pcs (too much CPU in use or something like that) but we don't really know..

Thanks,

Michael