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https://issues.apache.org/jira/browse/IGNITE-6818?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16247422#comment-16247422
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Dmitry Karachentsev commented on IGNITE-6818:
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[~sboikov] please review.
Thanks!
> In case of incoming communication connection ping the old one if it's alive
> ---------------------------------------------------------------------------
>
> Key: IGNITE-6818
> URL: https://issues.apache.org/jira/browse/IGNITE-6818
> Project: Ignite
> Issue Type: Bug
> Security Level: Public(Viewable by anyone)
> Affects Versions: 2.3
> Reporter: Dmitry Karachentsev
> Assignee: Dmitry Karachentsev
> Priority: Critical
> Fix For: 2.4
>
>
> Assume the following scenario:
> 1. Client opens connection to the server.
> 2. Server checks that it is a first connection to that node and accepts it.
> 3. By some reason firewall starts rejecting client messages with TCP reset
> flag set.
> 4. Client closes connection, but server doesn't know about it.
> 5. Client tries connect again.
> 6. Server rejects new connection, because it already has connection to that
> node.
> Possible fix: on step 6 server must check old connection if it's alive by
> sending some communication message and check response. If old connection is
> dead - close it and accept new one.
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