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  1. OMG Issue

CORBA3 — Detail lacking in when request interceptors are called

  • Key: CORBA3-11
  • Legacy Issue Number: 3599
  • Status: closed  
  • Source: Floorboard Software ( Jonathan Biggar)
  • Summary:

    I set out reading ptc/2000-04-05 to answer a question: how could a
    client interceptor for the OTS implement the proper behavior for the DII
    get_response or get_next_response operations that require the
    WrongTransaction to be raised if the current thread is not properly
    associated with the same transaction as the request.

    I wasn't able to answer this question authoritatively, because there is
    nothing in the Portable Interceptors Chapter that indicates the proper
    time sequencing of when the client side request interceptor operations
    are invoked in relation to the use of the DII (or the AMI_ messaging
    interfaces either.)

    By inference, it appears to me that the only way to allow an OTS client
    request interceptor to exhibit the proper semantics is for the ORB to
    not make calls to receive_


    when the response is
    received from the protocol stack, but instead to make them when
    get_response or get_next_response is called by the application.

    This paragraph in

    "Asynchronous requests are simply two separate requests. The first
    request receives no reply. The second receives a normal reply. So the
    normal (no exceptions) flow is: first request - send_request followed by
    receive_other; second request - send_request followed by receive_reply."

    is also not particularly useful, since it doesn't give any indication
    how the interceptor can distinguish the "first request" from the "second

    So, to sum up, the PI chapter needs explicit information showing the
    time sequencing of when the request interceptor operations are invoked
    in relationship to a static call, a DII call, and AMI_ calls.

  • Reported: CPP 1.1 — Tue, 9 May 2000 04:00 GMT
  • Disposition: Resolved — CORBA 3.0.2
  • Disposition Summary:

    see above

  • Updated: Fri, 6 Mar 2015 20:58 GMT