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  • 1.  Content Type Header Updated Automatically after Results Action

    Posted Mon February 26, 2024 12:25 PM

    Dears,

    We have a MPGW service where we decrypt and verify the input payload and forward the same to backend. We are using Datapower Actions to verify and decrypt. The Content Type header is being updated to binary/octet-stream from text/plain after the Results Action. There is no processing post JSON Web Decrypt.

    Please help me in fixing/idenitifying the reason why the Content-Type header is being automatically updated.

    When I checked in the probe. The header value was text/plain after the Decrypt Action. It is changed to binary/octet-stream after Results Action. There is no other action between Decrypt and Results Action



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    R K
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  • 2.  RE: Content Type Header Updated Automatically after Results Action

    Posted Tue February 27, 2024 03:23 AM
    Edited by Hermann Stamm-Wilbrandt Tue February 27, 2024 03:23 AM

    Hi,
    you are doing a transformation with the RESULT action, and that does more than changing content-type.
    Easiest way to keep the request content-type is to make last action in your rule use output context OUTPUT
    and remove the RESULT action.
    In case other actions would modify content-type, then you can always set content-type
    to value "var://service/original-content-type":
    https://www.ibm.com/docs/en/datapower-gateway/10.0.1?topic=variables-varserviceoriginal-content-type-servicevarsoriginalcontenttype



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    Hermann Stamm-Wilbrandt
    Compiler Level 3 support, IBM DataPower Gateways
    IBM
    Boeblingen Germany
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    Original Message


  • 3.  RE: Content Type Header Updated Automatically after Results Action

    Posted Tue February 27, 2024 10:48 AM

    Thanks Hermann, I have tried your suggestion. The content type is updated to binary/octet-stream Upon removing the Results Action and updating the Output context of JSON Web Decrypt Action to OUTPUT. 

    Is it a feature of JSON Web Decrypt Action to change to content Type in that way?



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    R K
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    Original Message


  • 4.  RE: Content Type Header Updated Automatically after Results Action

    Posted Tue February 27, 2024 11:15 AM

    You said earlier:
    > When I checked in the probe. The header value was text/plain after the Decrypt Action. I
    >
    So no, decrypt action does not do that.
    Please export your config and attach to a new support ticket to see what is going on.
    In the meantime you can use XSLT or GatewayScript to set content-type to "var://service/original-content-type".
    Here as well it is important that output context of that xform action is OUTPUT, with no RESULT action.



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    Hermann Stamm-Wilbrandt
    Compiler Level 3 support, IBM DataPower Gateways
    IBM
    Boeblingen Germany
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    Original Message


  • 5.  RE: Content Type Header Updated Automatically after Results Action

    Posted Tue February 27, 2024 10:23 AM

    Hi I'm not sure why that would change.

    Where is the results action going? If it is just sending to OUTPUT then an option would be to have the decrypt action write directly to OUTPUT and you can remove the results action.



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    Matthias Siebler
    DataPower/APIC development
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    Original Message


  • 6.  RE: Content Type Header Updated Automatically after Results Action

    Posted Wed February 28, 2024 01:06 PM

    Hi, I have tried removing the Results Action with no Luck. I am planning to raise a support ticket for this.



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    R K
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    Original Message