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PH21614: SIP REQUESTS WITH APPROPRIATE CSEQ NUMBERS RECEIVE MESSAGE 500 INCORRECT CSEQ

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APAR status

  • Closed as program error.

Error description

  • SIP requests with appropriate CSeq numbers are being rejected.
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED:  All users of IBM WebSphere Application      *
    *                  Server Session Initiation Protocol (SIP)    *
    ****************************************************************
    * PROBLEM DESCRIPTION: When using                              *
    *                      B2buaHelper.createResponseToOriginalReq *
    *                      uest, requests with correct CSeq        *
    *                      numbers might be rejected with an 500   *
    *                      error.                                  *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    When a SIP session is forked, requests with correct CSeq
    numbers might be rejected with an 500 Incorrect CSeq error.
    

Problem conclusion

  • A fix was made in the SIP Container so when using the
    createResponseToOriginalRequest API, the cloned session does
    not inherit the remote sequence number from the original
    session.
    
    The fix for this APAR is targeted for inclusion in fix pack
    8.5.5.18 and 9.0.5.3. For more information, see
    'Recommended Updates for WebSphere Application Server':
    http://www.ibm.com/support/docview.wss?rs=180&uid=swg27004980
    

Temporary fix

Comments

APAR Information

  • APAR number

    PH21614

  • Reported component name

    WEBS APP SERV N

  • Reported component ID

    5724H8800

  • Reported release

    850

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2020-01-30

  • Closed date

    2020-03-02

  • Last modified date

    2020-03-02

  • 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

    WEBS APP SERV N

  • Fixed component ID

    5724H8800

Applicable component levels

[{"Line of Business":{"code":"LOB36","label":"IBM Automation"},"Business Unit":{"code":"BU053","label":"Cloud & Data Platform"},"Product":{"code":"SSEQTP","label":"WebSphere Application Server"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"850"}]

Document Information

Modified date:
14 September 2020