saltstack/salt — pull request #3012 by dtucny (2012-12-24 03:00:37+00:00)
Title: Add configurable tcp keepalive support enabled by default

After ZeroMQ added TCP Keepalive support earlier this year, it's now available for salt. This can really help with loss of minions when firewalls, VPN gateways or similar are in between them and the master.
Included here is an update to the minion config to allow TCP Keepalive to be configured and the related use of those options to activate and configure the use of TCP Keepalives.
This has been set as enabled by default as I suspect it is likely to prevent problems people may encounter without causing new ones.