23554e6997
Motivation Pipeline handlers are free to "take control" of input buffers if they have singular refcount - in particular to mutate their raw data if non-readonly via discarding of read bytes, etc. However there are various places (primarily unit tests) where a wrapped byte-array buffer is passed in and the wrapped array is assumed not to change (used after the wrapped buffer is passed to EmbeddedChannel.writeInbound()). This invalid assumption could result in unexpected errors, such as those exposed by #8931. Modifications Anywhere that the data passed to writeInbound() might be used again, ensure that either: - A copy is used rather than wrapping a shared byte array, or - The buffer is otherwise protected from modification by making it read-only For the tests, copying is preferred since it still allows the "mutating" optimizations to be exercised. Results Avoid possible errors when pipeline assumes it has full control of input buffer. |
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