Smack 4.4.2 - XMPP Connection closed abruptly

[rakeshselvam]

We are getting “java.lang.IllegalStateException: Illegal Stream Management State” exception when trying to send chat message from single user to 150 clients and the clients are response back with a message to same user simultaneously. When this exception occurs, the particular user’s connection is closed with error.

Smack Version : 4.4.2
Openfire Version : 4.0.4
Environment : Windows

Exception:

closed with error
 java.lang.IllegalStateException: Illegal Stream Management State: Last known handled count (450) is greater than reported handled count (448)
        at org.jivesoftware.smack.sm.SMUtils.calculateDelta(SMUtils.java:51)
        at org.jivesoftware.smack.tcp.XMPPTCPConnection.processHandledCount(XMPPTCPConnection.java:1809)
        at org.jivesoftware.smack.tcp.XMPPTCPConnection.access$3100(XMPPTCPConnection.java:130)
        at org.jivesoftware.smack.tcp.XMPPTCPConnection$PacketReader.parsePackets(XMPPTCPConnection.java:1079)
        at org.jivesoftware.smack.tcp.XMPPTCPConnection$PacketReader.access$700(XMPPTCPConnection.java:913)
        at org.jivesoftware.smack.tcp.XMPPTCPConnection$PacketReader$1.run(XMPPTCPConnection.java:936)
        at java.lang.Thread.run(Unknown Source)

Openfire info.log when the problem occurs:
Openfire_Log.txt (213.6 KB)

Please suggest some solution to resolve this scenario and our client connection should not close automatically when concurrent messages received from more number of clients.

[guus]

Various bugs around the Stream Management feature have been fixed in later releases of Openfire. I strongly advise you to update to a new version of Openfire.

[rakeshselvam]

@guus Thanks for the quick reply. We will check with latest Openfire and update the results here.