[jboss-jira] [JBoss JIRA] (REMJMX-50) Client must eliminate unsupported versions from the list.

Thu Aug 16 04:45:14 EDT 2012

    [ https://issues.jboss.org/browse/REMJMX-50?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12711921#comment-12711921 ] 

Darran Lofthouse commented on REMJMX-50:
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This issue highlights one important point, although the version negotiation is supposed to be only in terms of protocol versions had the client and server exchanged their own version then it would have been possible to place a work around in the server side for the older clients to prevent the error from occurring - on adding support for version 0x00 to trigger another round of version negotiation I will also exchange client and server versions.

This information would also be useful server side anyway, should a problem be identified in the future it may be the easiest way to double check the version of remoting jmx in use by the remote clients without needing to visit each manually.

> Client must eliminate unsupported versions from the list.
> ---------------------------------------------------------
>
>                 Key: REMJMX-50
>                 URL: https://issues.jboss.org/browse/REMJMX-50
>             Project: Remoting JMX
>          Issue Type: Bug
>          Components: Connection
>            Reporter: Darran Lofthouse
>            Assignee: Darran Lofthouse
>            Priority: Blocker
>             Fix For: 1.0.5.CR1
>
>
> At the moment the client just iterates to find the highest version - however unsupported versions should have been dropped from the list (so should banned versions) 
> This means when we add version 0x02 existing clients break.
> Need to find a way to add the versions without breaking the existing clients.  One option may be to add version 0x00 existing clients will not use this as 0x01 is higher - if a client selects 0x00 then begin negotiating the version again.

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