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PQ53016: TELNET SSL TN3270 SESSION LOST WITH SC00006005

A fix is available

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APAR status

  • Closed as unreproducible in next release.

Error description

  • CA-Teleview is used to log onto the system:
    While working, the user's session somtimes hangs in
    XSystem. Being in XSystem, cust hits the Reset key
    and then the Enter key. He then loses his session with
    the VTAM message USSMSG07,  CIP2RA7 Unable to establish
    session - process failed with sense 00006005
    This problem occurs on sessions connected to SSL ports.
    Additional Symptoms: 6005, FFFFFFF5 (-11), EZBTTRCV, EZBTTSRV
    

Local fix

  • 
    

Problem summary

  • ****************************************************************
    * USERS AFFECTED: All users of Communications Server           *
    *                 for OS390 Release 10 and z/OS                *
    *                 Version 1 Release 2 IP Telnet facilities.    *
    ****************************************************************
    * PROBLEM DESCRIPTION: EZZ6035I messages with code 6005 and    *
    *                      parm1 a -11 on a SSL read.              *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    EZBTTSRV has a FSM set up to recognize when SSL is asking for
    a HDR , the length and then the data. MVS SSL was changed in
    R12 that causes this to fail. This cause an incorrect data count
    and returned 0 to SSL which now causes the Read Error -11 to
    be returned. For R10, the return of rcvdlen of 0 will also
    cause the -11 to be returned. The FSM in R10 is okay.
    +-------------------------------------------------------------+
    + Please check our Communications Server for OS/390 homepages +
    + for common networking tips and fixes.  The URL for these    +
    + homepages can be found in Informational APAR II11334.       +
    +-------------------------------------------------------------+
    

Problem conclusion

  • 
    

Temporary fix

  • *********
    * HIPER *
    *********
    

Comments

  • To resolve this problem, EZBTTSRV for both R10 and R12 will
    set a -1 Rcvdlen which causes the SKREADEXIT to set ewouldblock
    back to SSL. In addition, for R12, the code has been changed to
    set the correct states in the FSM and calculate the amount of
    data correctly.
    

APAR Information

  • APAR number

    PQ53016

  • Reported component name

    TCP/IP V3 MVS

  • Reported component ID

    5655HAL00

  • Reported release

    120

  • Status

    CLOSED UR1

  • PE

    NoPE

  • HIPER

    YesHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2001-10-02

  • Closed date

    2001-10-11

  • Last modified date

    2002-04-26

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

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

    UQ58612 UQ58613

Modules/Macros

  •    EZBTTSRV
    

Fix information

  • Fixed component name

    TCP/IP V3 MVS

  • Fixed component ID

    5655HAL00

Applicable component levels

  • R120 PSY UQ58612

       UP01/10/30 P F110 Ž

  • R50A PSY UQ58613

       UP01/10/30 P F110 Ž

Fix is available

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[{"Business Unit":{"code":"BU054","label":"Systems w\/TPS"},"Product":{"code":"SSSN3L","label":"z\/OS Communications Server"},"Platform":[{"code":"PF054","label":"z\/OS"}],"Version":"120","Line of Business":{"code":"LOB35","label":"Mainframe SW"}}]

Document Information

Modified date:
27 March 2021