[zeromq-dev] detecting disconnections

[Pieter Hintjens]

> PS. Even more precisely any partial message read should count as a
> heartbeat, otherwise reading large messages can cause a disconnect on an
> otherwise clearly healthy connection.

That's a good point, and an argument for breaking large messages into
frames guaranteed to cross the network within the heartbeat interval.
Or, to get secondary heartbeating help from 0MQ itself.

-Pieter