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  1. Qpid
  2. QPID-2714

"Programming in Apache Qpid" doesn't discuss capacity/credit

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    Details

    • Type: Bug
    • Status: Closed
    • Priority: Minor
    • Resolution: Fixed
    • Affects Version/s: 0.7
    • Fix Version/s: None
    • Component/s: C++ Documentation
    • Labels:
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      Description

      My comments grew out of looking at the C++ messaging API, though this probably applies to Python and .NET as well.

      During a discussion on users@qpid I initiated recently I learned that creating a number of Receivers and calling session.nextReceiver() to wait for a message on any of the Receivers doesn't work unless some capacity is granted to the Receivers first. This is different from simply calling fetch() on a Receiver with no capacity - in that case the client code issues credit behind the scenes.

      The code example shown in section 6 won't work (I used something very similar in a program I wrote, and it didn't for the reason above). I'll attach a patch that fixes the C++ code example, but there should be an introduction/discussion of the whole topic of capacity, credit, acks, etc.

        Attachments

        1. QPID-2714.patch
          0.5 kB
          Stephen D. Huston

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            • Assignee:
              Unassigned
              Reporter:
              shuston Stephen D. Huston
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                Updated:
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