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https://issues.apache.org/jira/browse/PROTON-584?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Justin Ross reassigned PROTON-584:
----------------------------------
Assignee: Alan Conway
> Proton-c transport reserves large buffers for brief use
> -------------------------------------------------------
>
> Key: PROTON-584
> URL: https://issues.apache.org/jira/browse/PROTON-584
> Project: Qpid Proton
> Issue Type: Improvement
> Components: proton-c
> Affects Versions: 0.8
> Reporter: Cliff Jansen
> Assignee: Alan Conway
> Labels: perf
> Fix For: 0.18.0
>
>
> When processing transfer frames for incoming messages, Proton requires a
> temporary buffer holding the whole transfer frame briefly in contiguous space
> in the transport before moving it to the engine proper which holds the
> content in a separate memory area.
> pn_transport_capacity grows the buffer in the non-ssl case
> (transport->input_buf), and openssl.c largely duplicates the code (including
> the comment about "no limit") for ssl->inbuf for ssl connections.
> Either way, a large message will trigger reserving a similarly large buffer
> for the rest of the life of the connection.
> Is it necessary for the transport to buffer the whole message body and hang
> on to that memory?
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