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https://issues.apache.org/jira/browse/PROTON-974?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14654199#comment-14654199
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Andrew Stitcher commented on PROTON-974:
----------------------------------------
This is an issue in the new Proton-C SASLcode not related to the Cyrus
implementation specifically.
The code pn_do_mechanisms() in .../sasl/sasl.c only tries to parse a mechanisms
from with a symbol list in it and will fail if there is no list.
> single symbol for mechanisms in sasl-mechanisms not recognised
> --------------------------------------------------------------
>
> Key: PROTON-974
> URL: https://issues.apache.org/jira/browse/PROTON-974
> Project: Qpid Proton
> Issue Type: Bug
> Components: proton-c
> Affects Versions: 0.10
> Reporter: Gordon Sim
> Assignee: Andrew Stitcher
>
> E.g. if a broker sends a sasl-mechanisms frame with a single symbol as the
> value of the mechanisms field, then it appears that the cyrus-sasl support in
> proton-c doesn't recognise that offered mechanism(?)
> {noformat}
> [0x2605d80]: -> SASL
> [0x2605d80]: <- SASL
> [0x2605d80]:0 <- @sasl-mechanisms(64) [sasl-server-mechanisms=:ANONYMOUS]
> [0x2605d80]:sasl error: SASL(-4): no mechanism available: No worthy mechs
> found
> [0x2605d80]:ERROR amqp:unauthorized-access Authentication failed
> [0x2605d80]: -> EOS
> ERROR:root:amqp:unauthorized-access: Authentication failed
> {noformat}
> From the spec, section 1.4:
> {quote}
> The multiple attribute of a field description controls whether multiple
> element values are permitted in the representation. A single element of the
> type specified in the field description is always permitted. Multiple values
> are represented by the use of an array where the type of the elements in the
> array is the type defined in the field definition.
> {quote}
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