ConnectionManager close the socket connection when the result of waiting.size() = 0 (#327)

binh vo opened 1 decade ago

The connection had been close with detail error as below:

2014-05-22 08:37:27.356 [ConnectionOpenThread]  ConnectionOpenThread.run()    FINEST:   OP_ACCEPT
2014-05-22 08:37:27.356 [ConnectionOpenThread]  ConnectionOpenThread.run()    FINER:    Registered new client socket: java.nio.channels.SocketChannel[connected local=/10.26.74.248:5222 remote=/10.26.119.6:32487]
2014-05-22 08:37:27.358 [ConnectionOpenThread]  ConnectionManager$ConnectionListenerImpl.accept()  FINEST: Accept called for service: null@null
2014-05-22 08:37:27.358 [ConnectionOpenThread]  ConnectionManager.serviceStarted()  FINER: [[c2s]] Connection started: null, type: accept, Socket: nullSocket[addr=/10.26.119.6,port=32487,localport=5222], jid: null
2014-05-22 08:37:27.359 [ConnectionOpenThread]  SocketThread.addSocketServicePriv()  FINEST: Adding to waiting: c2s@xmpp-dv-msdc03.ds.dtveng.net/10.26.74.248_5222_10.26.119.6_32487, type: accept, Socket: c2s@xmpp-dv-msdc03.ds.dtveng.net/10.26.74.248_5222_10.26.119.6_32487 Socket[addr=/10.26.119.6,port=32487,localport=5222], jid: null
2014-05-22 08:37:27.359 [socketReadThread-6]  SocketThread.run()              FINEST:   Selector AWAKE: sun.nio.ch.EPollSelectorImpl@1d6747c7
2014-05-22 08:37:27.359 [socketReadThread-6]  SocketThread.addAllWaiting()    FINEST:   waiting.size(): 1
2014-05-22 08:37:27.359 [socketReadThread-6]  SocketThread.addAllWaiting()    FINEST:   ADDED OP_READ: 10.26.74.248_5222_10.26.119.6_32487
2014-05-22 08:37:27.359 [socketReadThread-6]  SocketThread.run()              FINEST:   Selector AWAKE: sun.nio.ch.EPollSelectorImpl@1d6747c7
2014-05-22 08:37:27.359 [socketReadThread-6]  SocketThread.run()              FINEST:   AWAKEN: 10.26.74.248_5222_10.26.119.6_32487, ready for READING, readyOps() = 1
2014-05-22 08:37:27.359 [socketReadThread-6]  SocketThread.addAllWaiting()    FINEST:   waiting.size(): 0
2014-05-22 08:37:27.360 [pool-16-thread-1]  IOService.isConnected()           FINEST:   Socket: c2s@xmpp-dv-msdc03.ds.dtveng.net/10.26.74.248_5222_10.26.119.6_32487 Socket[addr=/10.26.119.6,port=32487,localport=5222], Connected: true, id: c2s@xmpp-dv-msdc03.ds.dtveng.net/10.26.74.248_5222_10.26.119.6_32487
2014-05-22 08:37:27.360 [pool-16-thread-1]  IOService.readData()              FINEST:   Socket: c2s@xmpp-dv-msdc03.ds.dtveng.net/10.26.74.248_5222_10.26.119.6_32487 Socket[addr=/10.26.119.6,port=32487,localport=5222], Exception reading data
java.io.EOFException: Channel has been closed.
	at tigase.io.SocketIO.read(SocketIO.java:309)
	at tigase.net.IOService.readData(IOService.java:992)
	at tigase.xmpp.XMPPIOService.processSocketData(XMPPIOService.java:524)
	at tigase.net.IOService.call(IOService.java:262)
	at tigase.net.IOService.call(IOService.java:103)
	at java.util.concurrent.FutureTask.run(FutureTask.java:262)
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
	at java.util.concurrent.FutureTask.run(FutureTask.java:262)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
	at java.lang.Thread.run(Thread.java:724)
2014-05-22 08:37:27.360 [pool-16-thread-1]  IOService.forceStop()             FINER:    Socket: c2s@xmpp-dv-msdc03.ds.dtveng.net/10.26.74.248_5222_10.26.119.6_32487 Socket[addr=/10.26.119.6,port=32487,localport=5222], Force stop called...
2014-05-22 08:37:27.360 [pool-16-thread-1]  IOService.forceStop()             FINER:    Calling stop on: c2s@xmpp-dv-msdc03.ds.dtveng.net/10.26.74.248_5222_10.26.119.6_32487 Socket[addr=/10.26.119.6,port=32487,localport=5222]
2014-05-22 08:37:27.360 [pool-16-thread-1]  IOService.forceStop()             FINER:    Calling stop on the listener: tigase.cluster.ClientConnectionClustered@6a850415
2014-05-22 08:37:27.360 [pool-16-thread-1]  ConnectionManager.serviceStopped()  FINER:  [[c2s]] Connection stopped: c2s@xmpp-dv-msdc03.ds.dtveng.net/10.26.74.248_5222_10.26.119.6_32487, type: accept, Socket: c2s@xmpp-dv-msdc03.ds.dtveng.net/10.26.74.248_5222_10.26.119.6_32487 Socket[unconnected], jid: null
2014-05-22 08:37:27.360 [pool-16-thread-1]  ClientConnectionManager.xmppStreamClosed()  FINER: Stream closed: c2s@xmpp-dv-msdc03.ds.dtveng.net/10.26.74.248_5222_10.26.119.6_32487
2014-05-22 08:37:27.360 [pool-16-thread-1]  IOService.isConnected()           FINEST:   Socket: c2s@xmpp-dv-msdc03.ds.dtveng.net/10.26.74.248_5222_10.26.119.6_32487 Socket[unconnected], Connected: false, id: c2s@xmpp-dv-msdc03.ds.dtveng.net/10.26.74.248_5222_10.26.119.6_32487
2014-05-22 08:37:27.360 [ResultsListener-socketWriteThread-6]  IOService.isConnected()  FINEST: Socket: c2s@xmpp-dv-msdc03.ds.dtveng.net/10.26.74.248_5222_10.26.119.6_32487 Socket[unconnected], Connected: false, id: c2s@xmpp-dv-msdc03.ds.dtveng.net/10.26.74.248_5222_10.26.119.6_32487
2014-05-22 08:37:27.360 [ResultsListener-socketWriteThread-6]  SocketThread$ResultsListener.run()  FINEST: REMOVED: 10.26.74.248_5222_10.26.119.6_32487

My question is:

Why the error had been log as FINEST level since it closes the connection? The error happens when we try to send big message (22kB) to the user.

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Artur Hefczyc commented 1 decade ago

The waiting.size() = 0 has nothing to do with connection close. And the closed connection is not considered as an error. This is just a normal thing form the server point of view. Clients open and close connections hundreds times per second and it is rarely an error. Therefore, Tigase does not report a closed connection as an error.

22kB message size is hardly considered as a big message. Tigase deals with much larger packets such as vcards with photos which can easily be more than 1MB. Therefore I doubt it has anything to do with sending a big message from the server to a client. Please also note, the connection close was disconnected during socket read attempt not write, so Tigase was not sending any data to a client.
binh vo commented 1 decade ago

Thank you Artur for quick response. I'll try to find out the root cause of this issue.
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Type	Question
Priority	Major
Assignee	Artur Hefczyc
RedmineID	1983

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Reference

tigase/_server/server-core#327