[jboss-jira] [JBoss JIRA] (JGRP-1586) UNICAST / UNICAST2: connection reaping should flush pending messages

[Bela Ban (JIRA)]

Bela Ban created JGRP-1586:
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             Summary: UNICAST / UNICAST2: connection reaping should flush pending messages
                 Key: JGRP-1586
                 URL: https://issues.jboss.org/browse/JGRP-1586
             Project: JGroups
          Issue Type: Task
            Reporter: Bela Ban
            Assignee: Bela Ban
             Fix For: 3.3


In UNICAST/UNICAST2, a connection reaper closes idle connections after conn_expiry_time ms. The closing of a connection from A to B simply destroys and removes the entry for B (on A).
However, if there are pending (unacked) messages in B's connection entry, they will be dropped.

SOLUTION: 
Instead of simply destroying the connection entry for B, we should mark the entry as 'closing', so no more messages are added, and flush any pending messages. Perhaps send a CLOSE message to B.

WORKAROUND:
Set UNICAST(2).conn_expiry_time=0. This doesn't run the connection reaper

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