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Posted to dev@qpid.apache.org by "Aidan Skinner (JIRA)" <qp...@incubator.apache.org> on 2009/04/20 17:33:47 UTC
[jira] Updated: (QPID-1823) Session creation for more than 64K
channelId causes timeout
[ https://issues.apache.org/jira/browse/QPID-1823?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Aidan Skinner updated QPID-1823:
--------------------------------
Attachment: QPID-1823.patch
patch, please review
> Session creation for more than 64K channelId causes timeout
> ------------------------------------------------------------
>
> Key: QPID-1823
> URL: https://issues.apache.org/jira/browse/QPID-1823
> Project: Qpid
> Issue Type: Bug
> Components: Java Client
> Affects Versions: 0.5
> Reporter: Aidan Skinner
> Assignee: Aidan Skinner
> Fix For: 0.5
>
> Attachments: QPID-1823.patch
>
>
> Mule connectors create a session for each message send. Once we get beyond 64K this causes a problem since channelId gets converted in AMQFrame.writeUnsignedShort and loops back round to 0. This is a problem since the channelId that the connection is holding does not get reset to the new value. It's also not ideal since channel 0 is the control channel.
> So, proposed solution is to:
> - check the channelId on session creation to see if greater than the channelMax value
> - if greater, then create an array holding a boolean for each index position (i.e. integer) false meaning channelId available and true if in use.
> - we can also also reserve channel 0 for control channel
> - so, for sessions created after the channel max value is hit then we perform a lookup/add on session creation and a remove on session close
> - thus the cost associated is marginal and only introduced after the 64K+1 session is opened
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