PI19580: mod_reqtimeout: Potential for unexpected timeouts in IBM HTTP Server 8.5.5 on z/OS when using RequestReadTimeout.

8.5.5.4: WebSphere Application Server V8.5.5 Fix Pack 4
8.5.5.5: WebSphere Application Server V8.5.5 Fix Pack 5
8.5.5.6: WebSphere Application Server V8.5.5 Fix Pack 6
8.5.5.7: WebSphere Application Server V8.5.5 Fix Pack 7
8.5.5.8: WebSphere Application Server V8.5.5 Fix Pack 8
8.5.5.9: WebSphere Application Server V8.5.5 Fix Pack 9
8.5.5.10: WebSphere Application Server V8.5.5 Fix Pack 10
8.5.5.11: WebSphere Application Server V8.5.5 Fix Pack 11
8.5.5.12: WebSphere Application Server V8.5.5 Fix Pack 12
8.5.5.13: WebSphere Application Server V8.5.5 Fix Pack 13
8.5.5.14: WebSphere Application Server V8.5.5 Fix Pack 14
8.5.5.15: WebSphere Application Server V8.5.5 Fix Pack 15
8.5.5.14: WebSphere Application Server V8.5.5 Fix Pack 14
8.5.5.17: WebSphere Application Server V8.5.5 Fix Pack 17
8.5.5.20: WebSphere Application Server V8.5.5.20
8.5.5.18: WebSphere Application Server V8.5.5 Fix Pack 18
8.5.5.19: WebSphere Application Server V8.5.5 Fix Pack 19
8.5.5.16: WebSphere Application Server V8.5.5 Fix Pack 16
8.5.5.21: WebSphere Application Server V8.5.5.21

APAR status

• Closed as program error.

Error description

• On keepalive requests, RequestReadTimeout from mod_reqtimeout
  may timeout prematurely.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED:  Users of IBM HTTP Server 8.5.5 on z/OS.     *
  ****************************************************************
  * PROBLEM DESCRIPTION: There could be premature timeouts       *
  *                      using RequestReadTimeout from           *
  *                      mod_reqtimeout on z/OS.                 *
  ****************************************************************
  * RECOMMENDATION:  Apply this fix.                             *
  ****************************************************************
  On z/OS only, there is a potential for premature timeouts when
  using RequestReadTimeout from the mod_reqtimeout module.
  

Problem conclusion

• The module was updated to avoid premature timeouts with
  RequestReadTimeout on z/OS.
  
  This fix is targeted for IBM HTTP Server fix pack:
  - 8.5.5.4
  

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 IHS ZOS

• Fixed component ID

  5655I3510

Applicable component levels

• R850 PSY

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