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From "ASF subversion and git services (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (PROTON-833) transport can emit frames with an invalid channel number after local session close
Date Thu, 05 Mar 2015 17:19:39 GMT

    [ https://issues.apache.org/jira/browse/PROTON-833?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14349117#comment-14349117
] 

ASF subversion and git services commented on PROTON-833:
--------------------------------------------------------

Commit 8f810c3757c21ef32589b1bdd276e83d21659eb3 in qpid-proton's branch refs/heads/master
from Robert Gemmell
[ https://git-wip-us.apache.org/repos/asf?p=qpid-proton.git;h=8f810c3 ]

PROTON-833: check the local channel is still set


> transport can emit frames with an invalid channel number after local session close
> ----------------------------------------------------------------------------------
>
>                 Key: PROTON-833
>                 URL: https://issues.apache.org/jira/browse/PROTON-833
>             Project: Qpid Proton
>          Issue Type: Bug
>          Components: proton-j
>    Affects Versions: 0.8
>            Reporter: Robbie Gemmell
>            Assignee: Robbie Gemmell
>
> The transport can emit frames with an invalid channel number after a local session close
is performed.
> A side effect of calling close on the session is that the channel number is unmapped
when the end frame is sent, and the associated field set to the value -1. The transport can
subsequently send frames which then use this -1 value, treating it as channel 65535 when sent
to represent the unsigned channel number. For example, if a local link close(+detach?) call
is performed in response to a remote detach after a local session close is performed, a detach
frame can be emitted with channel 65535. Similarly, I have noticed disposition frames being
sent with channel 65535.
> Proton-C appears to protect against thse situations by inspecting whether the channel
number has been set as >= 0.



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