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https://issues.apache.org/jira/browse/JCS-89?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Thomas Vandahl resolved JCS-89.
-------------------------------
Resolution: Fixed
Fix Version/s: jcs-1.4-dev
Patch applied.
> UDP Discovery fails to report correct IP address to peers for back-connect
> when InetAddress.getLocalHost() fails to return an externally-visible address
> (i.e. returns a local address)
> ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
>
> Key: JCS-89
> URL: https://issues.apache.org/jira/browse/JCS-89
> Project: Commons JCS
> Issue Type: Bug
> Reporter: Diego Rivera
> Assignee: Thomas Vandahl
> Fix For: jcs-1.4-dev
>
> Attachments: jcs-89-fix.patch
>
> Original Estimate: 1h
> Remaining Estimate: 1h
>
> On certain environments where reverse-lookup of the machine's IP address
> isn't available, or other IP configurations restrict the ability of the JVM
> to determine its own "canonical" local address, it's impossible to determine
> ahead of time what address should be sent into the UDP multicast in order for
> lateral peers to establish the back-connection.
> The fix for this is simple: when the packet is received with the discovery
> message, determine the source host address of the packet that was received
> and set that to the discovery message's host property
> (setHost(packet.getAddress().getHostAddress()). This way, it's 100% for
> certain we'll be back-connecting to the correct instance.
> A patch will be uploaded shortly.
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