[jboss-jira] [JBoss JIRA] (JGRP-1781) Message: write/read the payload last when marshalling

[Bela Ban (JIRA)]

Bela Ban created JGRP-1781:
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             Summary: Message: write/read the payload last when marshalling
                 Key: JGRP-1781
                 URL: https://issues.jboss.org/browse/JGRP-1781
             Project: JGroups
          Issue Type: Enhancement
            Reporter: Bela Ban
            Assignee: Bela Ban
             Fix For: 3.5


When (un)marshalling a message, we process the fields in this order:
# Sender and receiver addresses
# Flags
# Payload
# Headers

I'd like to change this to move processing of the payload to the end because
* If payload refers to a different buffer (JGRP-1773), then we don't need to read the bytes, but currently have to skip N bytes to read the headers. If the payload was at the end, this wouldn't be needed
* Once we use NIO.2 and gathering writes, we'd pass a couple of buffers to the socket write and therefore it's simpler if the payload is written last. Ditto for scattering reads.


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