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https://issues.apache.org/jira/browse/GEODE-6316?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17171151#comment-17171151
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Alexander Murmann commented on GEODE-6316:
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[~zhouxj] This is still open years later. In the PR is a mysterious reference
to other alternatives. Should this be closed?
> When socket is closed in proxy, should ping to verify its connection status
> ---------------------------------------------------------------------------
>
> Key: GEODE-6316
> URL: https://issues.apache.org/jira/browse/GEODE-6316
> Project: Geode
> Issue Type: Bug
> Components: client/server
> Reporter: Xiaojian Zhou
> Assignee: Xiaojian Zhou
> Priority: Major
> Labels: pull-request-available
> Time Spent: 1h 10m
> Remaining Estimate: 0h
>
> When client's socket was closed, the server's socket.isConnected() will still
> be true if there's no msg is sent to it.
>
> So to verify if a proxy is still alive, we should ping it.
>
> The original checking code "if (staleClientProxy.isConnected() &&
> staleClientProxy.getSocket().isConnected())" was introduced in GEODE-1183.
> While the idea of GEODE-1183 is still valid, this checking logic is not
> mature. When a client's socket is closed, and it tried to reconnect, it could
> fail with
> "A previous connection attempt from this client is still being processed:"
> and cannot connect.
>
> The fix is to send a PING msg to an existing proxy. If failed, the PING msg
> will automatically close the proxy.
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