Module connection 

One task per TCP connection: terminate TLS, route, attach, serve, detach.

The task owns the socket and nothing else. A migration never moves it: only the shard it sends its events to changes, which is exactly why a connection can cross shards without its client noticing anything but a new tree.

  TLS -> Version -> [Authenticate] -> router.route()
       -> attach -> prelude -> the shard's first transition -> ServerSync
       -> service loop
       -> detach

Functions

serve

Serve one accepted TCP connection to completion.