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IT02803: UNEXPECTED TIMEOUT WHEN RECEIVING HTTP 304 RESPONSE WITH OPTION "PROCESSES MESSAGES WHOSE BODY IS EMPTY" = ON

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APAR status

  • Closed as program error.

Error description

  • Upon clicking ?F5? key within front side client browser to
    refresh webpage, the backend HTTP server might return HTTP 304
    No Modified response. If "Process Message Whose Body Is Empty"
    option is on, and DataPower receives HTTP 304 response, the
    request will fail and an error like below will be logged.
    
    network error 615792663   1.1.1.1 0x80e006bf xmlfirewall
    (sampleXMLFW): A timeout occurred when reading or writing
    through the default identity processor.
    

Local fix

  • Set "Process Message Whose Body Is Empty" = OFF to avoid
    triggering this timeout.
    

Problem summary

  • Affected are Datapower configurations with XML Firewall service.
    
    When the service receives a legitimate HTTP response with no
    body from its backend (for example with HTTP status codes 1xx,
    204 or 304), the service will not recognize the back-side
    transaction as complete and will continue waiting until the
    backend closes the connection, resulting in a timeout error.
    

Problem conclusion

Temporary fix

Comments

APAR Information

  • APAR number

    IT02803

  • Reported component name

    DATAPOWER

  • Reported component ID

    DP1234567

  • Reported release

    500

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2014-06-30

  • Closed date

    2014-09-19

  • Last modified date

    2014-09-26

  • 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

    DATAPOWER

  • Fixed component ID

    DP1234567

Applicable component levels

  • R500 PSN

       UP

  • R600 PSN

       UP

  • R601 PSN

       UP

  • R700 PSN

       UP



Document information

More support for: IBM DataPower Gateways
General

Software version: 5.0.0

Reference #: IT02803

Modified date: 26 September 2014