PQ53016: TELNET SSL TN3270 SESSION LOST WITH SC00006005

Obtain the fix for this APAR.

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 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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