PH60998: CLASSCASTEXCEPTIONS OCCURS WITH SIPSERVLET AND WEBSOCKETS

APAR status

• Closed as program error.

Error description

• java.lang.ClassCastException:
  com.ibm.wsspi.sip.converge.ConvergedHttpSessionContextImpl
  incompatible with
  com.ibm.ws.webcontainer31.session.IHttpSessionContext31
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED:  WebSphere Liberty users of SIP Servlet 1.1  *
  *                  on 24.0.0.4                                 *
  ****************************************************************
  * PROBLEM DESCRIPTION: ClassCastException occurs between       *
  *                      sipServlet-1.1 and WebSockets.          *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  The following ClassCastException occurs if both sipServlet-1.1
  and websocket-1.0 (or 1.1) are enabled.
  java.lang.ClassCastException:
  com.ibm.wsspi.sip.converge.ConvergedHttpSessionContextImpl
  incompatible with
  com.ibm.ws.webcontainer31.session.IHttpSessionContext31
  This was introduce via
  https://github.com/OpenLiberty/open-liberty/pull/26772 which
  addressed a websocket out-of-memory leak.
  

Problem conclusion

• The code has been updated to avoid this ClassCastException in
  Liberty Fixpack 24.0.0.5
  
  The GitHub issue can be found here:
  https://github.com/OpenLiberty/open-liberty/issues/28125
  
  For more information, see 'Recommended Updates for
  WebSphere Application Server':
  https://www.ibm.com/support/pages/node/715553
  

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

  WAS LIBERTY COR

• Fixed component ID

  5725L2900

Applicable component levels