why use '' in envelope?
envelope is about return addresses, like forth return stack.
how internet router works?
[mydemo] support heartbeat
[mydemo] refactor so that retry
is composable
[mydemo] refactor so that heartbeat
are composable
[pirate-lazy] close and reconnect on a new socket
[pirate-simple] close and reconnect on a new socket
[pirate-paranoid] startClient
[pirate-paranoid] startBroker
[pirate-paranoid] startWorker
[pirate-paranoid] index
[pirate-paranoid] refactor so that heartbeat
is composable
[inter-broker-routing] chapter 3 of zguide