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https://issues.apache.org/jira/browse/PROTON-2531?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17921807#comment-17921807
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Pete Fawcett commented on PROTON-2531:
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[~astitcher] Yes, this is a regression since 0.38 - I haven't tried 0.39.
In 0.38, if the Qpid broker sent a tag {{bytes([0, 0, 0, 128])}} then the
Python client would
receive {{delivery.tag == '\x00\x00\x00\x80'}} i.e. a string but with a direct
character to byte correlation with the original tag - and no exception thrown.
I find the SWIG version rather opaque so can't see exactly how it is achieving
this but the result is clear.
I agree with your inclination to return a bytes object. It might cause some
annoyance with users who need to change their client code, but I think it is
cleaner - and preferable to having code fail with exceptions when communicating
with a broker.
I will raise a separate ticket.
Thanks
> Delivery tag is str while it should be bytes
> --------------------------------------------
>
> Key: PROTON-2531
> URL: https://issues.apache.org/jira/browse/PROTON-2531
> Project: Qpid Proton
> Issue Type: Bug
> Components: python-binding
> Reporter: Ievgen Popovych
> Priority: Major
>
> According to AMQP standard delivery tag is ??up to 32 octets of binary
> data??. Proton C library also has it in binary format.
> But in the Python binding {{Delivery.tag}} is a string, which causes issues
> when trying to use it (i.e. print/visualize).
> As far as I understand this is down to Swig {{python/cproton.i}}
> {{wrap_pn_delivery_tag}} (since typemap for {{pn_delivery_tag_t}} seems to be
> correct)?
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