IT43281: TCPIPINPUT NODES MAY STOP PROCESSING IF THE TCPIP CONNECTION GETCLOSED WHILE THE NODE WAITS FOR DATA.

APAR status

• Closed as program error.

Error description

• When a message flow is reading from an input stream connection
  of a socket and another message flow intentionally closes the
  socket connection, the connection does not get cleared and the
  reading message flow results in an infinite loop. The message is
  not propagated through the close terminal of the node if it is
  connected eventhough the connection is closed and the message
  flow results in a hang like situation.
  
  The service trace shows the following NullPOinterException in
  it :
  'java.lang.NullPointerException at
  com.ibm.broker.plugin.MbException.(MbException.java:229) at
  com.ibm.broker.plugin.MbException.(MbException.java:271) at com
  .ibm.broker.plugin.MbRecoverableException.(MbRecoverableExcepti
  on.java:85)at com.ibm.broker.plugin.MbErrorHandler.throwRecovera
  on(MbErrorHandler.java:115)at com.ibm.broker.tcpip.TCPIPInputStr
  Stream.java:289)
  

Local fix

Problem summary

• ****************************************************************
  USERS AFFECTED:
  All users of App Connect Enterprise V12 using TCPIP input nodes.
  
  
  Platforms affected:
  MultiPlatform
  
  ****************************************************************
  PROBLEM DESCRIPTION:
  When a message flow is reading from an input stream connection
  of a socket and another message flow intentionally closes the
  socket connection, the connection does not get cleared and the
  reading message flow results in an infinite loop simulating a
  hang like situation.
  

Problem conclusion

• The product has been modified such that the connection now gets
  cleared when the socket connection is intentionally closed by a
  message flow even when there is another message flow reading
  from the input stream.
  
  ---------------------------------------------------------------
  The fix is targeted for delivery in the following PTFs:
  
  Version    Maintenance Level
  v12.0      12.0.10.0
  
  The latest available maintenance can be obtained from:
  http://www-01.ibm.com/support/docview.wss?rs=849&uid=swg27006041
  
  If the maintenance level is not yet available,information on
  its planned availability can be found on:
  http://www-1.ibm.com/support/docview.wss?rs=849&uid=swg27006308
  ---------------------------------------------------------------
  

Temporary fix

Comments

APAR Information

• APAR is sysrouted FROM one or more of the following:

• APAR is sysrouted TO one or more of the following:

Fix information

• Fixed component name

  APP CONNECT ENT

• Fixed component ID

  5724J0560

Applicable component levels