LI81212: LUA CAUSES PROTOCOL ERROR WHEN PROCESSING BID-INITIATED BRACKET

Communications Server for Linux, Version 6.4 -- Latest Fixpack

APAR status

• Closed as program error.

Error description

• When a bracket is initiated with a BID, then a subsequent FM
  Data RU is received needing a definite response, the RUI_WRITE
  issued to generate the positive response, although issued
  correctly, is modified internally to improperly set the DFC and
  FI flags in the RH header, causing the response to be rejected
  with an UNBIND with sense code 10020000 "RU Length Error".
  

Local fix

Problem summary

• USERS AFFECTED: Applications using the RUI_PRIMARY LUA API.
  
  PROBLEM DESCRIPTION:
  Trace shows:
  SND>> BID RQD1 DFC FI BC EC
  <<RCV BID +RSP DFC FI
  SND>> FMD RQD1 FMD BB CD BC EC
  <<RCV FMD +RSP FMD
  <<RCV FMD RQD1
  SND>> ? +RSP DFC FI
  <<RCV UNBIND RQD1 10020000
  SND>> UNBIND +RSP
  
  PROBLEM SUMMARY:
  In an API trace, the application issues a RUI_WRITE with a
  correct +RSP to the FMD, but internal processing changes it to a
  DFC +RSP.
  

Problem conclusion

• Code has been changed to correct the processing of the
  RUI_PRIMARY DFC responses.
  

Temporary fix

Comments

APAR Information

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

  LI81030

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

Fix information

• Fixed component name

  CS FOR LINUX

• Fixed component ID

  5724I3300

Applicable component levels

• R640 PSY