[jboss-jira] [JBoss JIRA] Commented: (JGRP-897) Anycasting: better use of logical addresses

[Bela Ban (JIRA)]

    [ https://jira.jboss.org/jira/browse/JGRP-897?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12456444#action_12456444 ] 

Bela Ban commented on JGRP-897:
-------------------------------

Ok, here's an update:

- AnycastAddress is an implementation of Address
- It is multiple unicasts conceptually
- An anycast message to C and D has a destination address of AnycastAddress(C,D), which is a list of multiple UUIDs
- UNICAST checks for AnycastAddress and inserts both C and D into its retransmission tables
- TP then sends a message with an AnycastAddress as dest as (a) a multicast (UDP), (b) multiple UDP datagrams (UDP) or (c) multiple TCP unicasts (TCP, TCP_NIO).
- TCP would send an Anycast(C,D) only to C and D (same for UDP datagrams)
- When a message with AnycastAddress(C,D) is received by B, it is discarded. This check could be done by the transport, or (in the case of a singleton) by the ProtocolAdapter
- FC now has to decrement credits for all addresses in an AnycastAddress when sending a message
- On the receiver side, an anycast message is received as if it was multiple unicasts

> Anycasting: better use of logical addresses
> -------------------------------------------
>
>                 Key: JGRP-897
>                 URL: https://jira.jboss.org/jira/browse/JGRP-897
>             Project: JGroups
>          Issue Type: Task
>            Reporter: Bela Ban
>            Assignee: Bela Ban
>             Fix For: 2.8
>
>
> See whether logical addresses allow us to handle anycasting more efficiently, ie. handle them at the transport level, and not by sending multiple unicasts

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