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From "ASF subversion and git services (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (QPID-5808) Python framer can discard inbound data under some circumstances.
Date Mon, 09 Jun 2014 21:57:02 GMT

    [ https://issues.apache.org/jira/browse/QPID-5808?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14025816#comment-14025816
] 

ASF subversion and git services commented on QPID-5808:
-------------------------------------------------------

Commit 1601513 from [~kgiusti] in branch 'qpid/trunk'
[ https://svn.apache.org/r1601513 ]

QPID-5808: framer should consume only header bytes

> Python framer can discard inbound data under some circumstances.
> ----------------------------------------------------------------
>
>                 Key: QPID-5808
>                 URL: https://issues.apache.org/jira/browse/QPID-5808
>             Project: Qpid
>          Issue Type: Bug
>          Components: Python Client
>    Affects Versions: 0.28
>            Reporter: Ken Giusti
>            Assignee: Ken Giusti
>             Fix For: 0.29
>
>
> On my RHEL7 beta system, while using SSL, the python framer will consume an extra byte
past the frame header (the 9th byte), rather than only consuming the first 8 bytes (frame
header).  This 9th byte gets dropped, and the connection fails.
> Here is an example of the proper behavior:
> 2014-06-09 15:24:52,192 FRAMER recvd [414d51500101000a]
> 2014-06-09 15:24:52,193 Frame body: [0f0000940000000000000000010107000000003f0000000113717069642e66656465726174696f6e5f74616795002461393130316261312d356334312d343165372d\
> 623636372d6565643435366439313666390000002d95000000040009414e4f4e594d4f55530005504c41494e000a4449474553542d4d443500084352414d2d4d44350000000c95000000010005656e5f5553]
> Whereas I occasionally see this behavior, which causes the failure:
> 2014-06-09 15:23:41,295 FRAMER recvd [41]
> 2014-06-09 15:23:41,295 FRAMER recvd [4d51500101000a0f]
> 2014-06-09 15:23:41,296 Frame body: [00006e0000000000000000010107000000003f0000000113717069642e66656465726174696f6e5f74616795002461393130316261312d356334312d343165372d62\
> 3636372d65656434353664393136663900000007950000000100000000000c95000000010005656e5f5553]
> As you can see, the first byte (0x0f) was read by the framer, and was discarded, resulting
in a corrupted frame.



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