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Posted to dev@qpid.apache.org by GitBox <gi...@apache.org> on 2021/12/20 16:34:34 UTC

[GitHub] [qpid-proton] ktdreyer commented on pull request #348: Document ttl=0 behavior

ktdreyer commented on pull request #348:
URL: https://github.com/apache/qpid-proton/pull/348#issuecomment-998087114


   Yes, https://pagure.io/koji/issue/3120 has the background. There is some confusion around what a `0` TTL means. Does it mean "send a header with a zero value", or "send no header" ?
   
   Python has a `NoneType`, so a programmer might assume that `0` sends a zero header, while `None` means send no header at all. My doc update in this PR implicitly clarifies why Proton uses `0` instead of `None` to mean "no ttl header".


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