[jira] [Resolved] (PROTON-933) Cyrus SASL GSSAPI plugin can error if sent long buffers.

["Andrew Stitcher (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/PROTON-933?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Andrew Stitcher resolved PROTON-933.
------------------------------------
       Resolution: Fixed
    Fix Version/s: 0.10

> Cyrus SASL GSSAPI plugin can error if sent long buffers.
> --------------------------------------------------------
>
>                 Key: PROTON-933
>                 URL: https://issues.apache.org/jira/browse/PROTON-933
>             Project: Qpid Proton
>          Issue Type: Bug
>          Components: proton-c
>    Affects Versions: 0.10
>            Reporter: Andrew Stitcher
>            Assignee: Andrew Stitcher
>            Priority: Blocker
>             Fix For: 0.10
>
>
> Cyrus SASL GSSAPI is not able to handle buffers in the advertised way -
> Even if you limit the amount of data to decode on the server side to the SASL_MAXOUTBUF value that it reports it can fail with a syslog of (for example):
> {quote}
> Jul  6 13:32:38 proton msgr-recv: encoded packet size too big (32828 > 32768)
> {quote}
> It appears that the decode routine can coalesce received buffers, and in fact its actual requirement is that you may not _encode_ on the _client_ any more than the value returned on the server. However the value of SASL_MAXOUTBUF that is returned on the client is 60 bytes bigger than the value returned on the server.
> The workaround is to subract 60 bytes from the value on the returned on the client before using it.



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