PK76785: CORRUPTED IIOP MESSAGES ARE DROPPED AND CONNECTION FAILED, CAUSING IIOP MESSAGE ORIGINATOR TO TIME OUT.

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• IIOP messages arrive at the WebSphere Application Server
  controller region IIOP port, but there are 4 extra bytes at
  the beginning of the message. When this happens, the message
  fails basic syntax checking because all IIOP messages begin with
  the ascii string "GIOP". Such corrupted messages are discarded
  and the connection is failed. The process which sent the IIOP
  request is not notified of the failure. No response is
  generated, and eventually the sender times out, usually
  resulting in an SEC3 ABEND.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED:  All users of WebSphere Application Server   *
  *                  V7.0 for z/OS                               *
  ****************************************************************
  * PROBLEM DESCRIPTION: The WebSphere Application Server for    *
  *                      z/OS server fails to respond to an      *
  *                      IIOP client's GIOP request when the     *
  *                      GIOP message header is malformed,       *
  *                      causing the IIOP client to hang.        *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  When the WebSphere Application Server for z/OS server receives
  a GIOP message with a malformed message header, the server
  reports the exception with an FFDC record but does not respond
  to the IIOP client with an exception.  Thus, the client
  receives no indication from the server that the server failed
  to process the GIOP message.  The client waits indefinitely for
  a response that will never be sent.
  

Problem conclusion

• Updated the server code to terminate the IIOP connection when a
  malformed GIOP message header is encountered, thus alerting the
  IIOP client that the server could not process the GIOP
  message.
  
  APAR PK76785 is currently targeted for inclusion in
  Service Level 7.0.0.3 of WebSphere
  Application Server  for z/OS.
  
  Please refer to URL:
  //www.ibm.com/support/docview.wss?rs=404&uid=swg27006970
  for Fix Pack availability.
  

Temporary fix

Comments

APAR Information

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

  PK75990

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

Modules/Macros

• BBGUBINF BBOUBINF
  

Fix information

• Fixed component name

  WEBSPHERE FOR Z

• Fixed component ID

  5655I3500

Applicable component levels

• R700 PSY UK45120

     UP09/04/06 P F904

Fix is available

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