Signals that an unknown error has occurred.
Signals that an unknown error has occurred. In this even the tail stages have likely shut down but that is not guarenteed. If the stage cannot recover it should propagate the error. If the Error reaches the HeadStage, the HeadStage _should_ shutdown the pipeline.
Throwable that was unhandled by the tail of the pipeline.
Signals the stages desire to Connect.
Signals the stages desire to Connect. It may be attempting to read from the pipeline
Signals that the pipeline HeadStage is connected and ready to accept read and write requests
Signals the tails desire to shutdown.
Signals the tails desire to shutdown. No Disconnected command should be sent in reply
Signals to the tail of the pipeline that it has been disconnected and shutdown.
Signals to the tail of the pipeline that it has been disconnected and shutdown. Any following reads or writes will result in an exception, EOF, a general Exception signaling the stage is not connected, or otherwise.
Signals to the entire pipeline that the HeadStage has been disconnected and shutdown.
Signals the the stages a desire to flush the pipeline.
Signals the the stages a desire to flush the pipeline. This is just a suggestion and is not guaranteed to induce any effect.