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I am working on a chat app using xmpp,As per our requirement we have three server Apache Tomcat 7,ejabbered 2.1.11 and mysql 5.5,

to run xmppbot on tomcat  used below library
    -Smack-core-4.0.3.jar
    -smack-tcp-4.0.3.jar
    -xlightweb2.5.jar
    -xpp3-1.1.3.3.jar
    -xSocket-2.4.6.jar

Using above library I am able to Connect with ejabberd and able to login with my login id and password but after some time of logging in connection gets close automatically and a am getting below stack trace

Sep 16, 2014 4:36:01 PM org.jivesoftware.smack.XMPPConnection callConnectionClosedOnErrorListener
WARNING: Connection closed with error
java.io.EOFException: no more data available - expected end tag </stream:stream> to close start tag <stream:stream> from line 1, parser stopped on END_TAG seen ...</text></error></iq>... @1:1347
    at org.xmlpull.mxp1.MXParser.fillBuf(MXParser.java:2919)
    at org.xmlpull.mxp1.MXParser.more(MXParser.java:2928)
    at org.xmlpull.mxp1.MXParser.nextImpl(MXParser.java:1112)
    at org.xmlpull.mxp1.MXParser.next(MXParser.java:1061)
    at org.jivesoftware.smack.tcp.PacketReader.parsePackets(PacketReader.java:279)
    at org.jivesoftware.smack.tcp.PacketReader.access$000(PacketReader.java:47)
    at org.jivesoftware.smack.tcp.PacketReader$1.run(PacketReader.java:81)
Sep 16, 2014 4:37:15 PM org.jivesoftware.smack.XMPPConnection callConnectionClosedOnErrorListener
WARNING: Connection closed with error
java.io.EOFException: no more data available - expected end tag </stream:stream> to close start tag <stream:stream> from line 1, parser stopped on END_TAG seen ...</text></error></iq>... @1:1347
    at org.xmlpull.mxp1.MXParser.fillBuf(MXParser.java:2919)
    at org.xmlpull.mxp1.MXParser.more(MXParser.java:2928)
    at org.xmlpull.mxp1.MXParser.nextImpl(MXParser.java:1112)
    at org.xmlpull.mxp1.MXParser.next(MXParser.java:1061)
    at org.jivesoftware.smack.tcp.PacketReader.parsePackets(PacketReader.java:279)
    at org.jivesoftware.smack.tcp.PacketReader.access$000(PacketReader.java:47)
    at org.jivesoftware.smack.tcp.PacketReader$1.run(PacketReader.java:81)

and above messages keeps repeating in loop in my eclipse console!!!

can anyone explain me

  1. What is the reason for the above error?
  2. How can I solve above error?

Thanks in advance!!!

Flow
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Dev
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    in my use case reason for occurrence of above error was jabber server(ejabberd) was dropping connection after a fixed time interval ofcause when connection was ideal,so what i did was after completing my task say sending chat message i am disconnecting the xmpp connection[my usecase was i was creating a xmpp connection from a servlet which runs on Tomcat7 application server] this was one solution another one is as mention by @Flow you can place a connection listener on created xmpp connection object,it will listen to connection Closed With Error and you can try to reconnect to xmpp server! – Dev Oct 09 '14 at 05:07
  • I am not experienced in ejabberd but possibly [this answer](http://stackoverflow.com/a/27659800/2111944) might help you. – sinner Dec 26 '14 at 17:28

2 Answers2

3

You need to set a heartbeat(ping) interval to overcome timeouts over idle connections. Timeouts need not necessarily be in the applications, they can be in the routers/switches in the path.in the example, 600 represents 10 minutes.

PingManager.getInstanceFor(connection).setPingInterval(600);

user2067095
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  1. What is the reason for the above error?

Then connection went down unexpectedly. For example because the server closed it in an unclean way.

  1. How can I solve above error?

There can be many causes for this. You should handle the exception and re-establish the connection.

Flow
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  • Hiiii, I got same problem with ejabberd. We have recently migrated from openfire to ejabberd. We never came across this issue while using openfire. Any idea where to look at. – Abhishek Patidar Sep 16 '15 at 06:51