java.io.EOFException: no more data available - exp

Question

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!!!

Answer 1

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.

2. How can I solve above error?

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

Answer 2

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);