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01a82b5291
Before this commit, the return value from write was interpreted as the data being fully written and ready to be released via releaseData(). This is not true for WebSocketSession implementations where a true return value simply means the message was sent with the full payload but releas is not appropriate until a send confirmation. Technically not an issue since WebSocketSession's extending this do not use pooled buffers. Nevertheless this commit refines the semantics of write, removes the releaseData() method, and makes sub-classes responsible for releasing the buffer when fully written (and they know best when that is). As a bonus currentData is now private. Issue: SPR-16207