Timothy Bish created PROTON-1767:
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Summary: [proton-j] Allow the Transport to expose an output buffer
that is not read-only
Key: PROTON-1767
URL: https://issues.apache.org/jira/browse/PROTON-1767
Project: Qpid Proton
Issue Type: Improvement
Components: proton-j
Affects Versions: proton-j-0.25.0
Reporter: Timothy Bish
Assignee: Timothy Bish
Fix For: proton-j-0.26.0
In some cases the read-only output buffer exposed by TransportImpl by calling
head() or getOutputBuffer() can lead to extra intermediate copies of the buffer
based on the IO framework being used to transmit the bytes (such as current
Netty releases). This is due to the fact that the read-only buffer reports
that it doesn't have a backing array so the frameworks try to work around this
to optimize the transfer of bytes. For uses who are aware of this and can
ensure they never tamper with the buffer contents that aren't consumed we
should let them choose to expose a writable duplicate of the output buffer.
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