[jboss-jira] [JBoss JIRA] (JGRP-1765) TP: enable loopback by default and discard own multicasts

[Bela Ban (JIRA)]

    [ https://issues.jboss.org/browse/JGRP-1765?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12951474#comment-12951474 ] 

Bela Ban commented on JGRP-1765:
--------------------------------

[~ammous] I don't see why this is needed; after all the same message is received in the same ordered sequence at all receivers. If a message arrives at at the sender a few ms earlier, then so be it. You can always write a protocol which delivers messages at the same (wall clock) time, e.g. using time synchronization.
                
> TP: enable loopback by default and discard own multicasts
> ---------------------------------------------------------
>
>                 Key: JGRP-1765
>                 URL: https://issues.jboss.org/browse/JGRP-1765
>             Project: JGroups
>          Issue Type: Enhancement
>            Reporter: Bela Ban
>            Assignee: Bela Ban
>             Fix For: 3.5
>
>
> Enable {{TP.looback}} by default (deprecate and ignore prop): all messages sent by self are passed right to a thread pool to send them up again.
> When a multicast message sent by self is received, it is currently passed to a thread pool, de-serialized and only then discarded if loopback=true. This means that we create an unneeded buffer for de-serializationand perform de-serialization.
> SOLUTION: discard the multicast from self immediately when receiving it, in {{TP.receive()}}

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