Unidirectional transports and connections are now called
simplex rather than batch. Bidirectional transports and connections
are now called duplex rather than stream.

cleanly.

No Thread.sleep() till Brooklyn.

between two machines.

packet.

connection was recognised.

plugin.

connection once.

Runnables encapsulating database or IO tasks are passed to the
relevant threads. The IO thread's task queue is unbounded to avoid
deadlock, but its growth is indirectly limited by the progress of
database tasks.