tree ec8f9aa05b3c05545f6cf61367eff17b6ca11aac
parent f8989de854641cc147cd847852452f7fe7c46333
author Jonathan Hart <jono@onlab.us> 1493413189 -0700
committer Jonathan Hart <jono@opennetworking.org> 1504826609 -0700

Added keepalives to the FPM protocol.

This bumps the FPM protocol version to indicate that we are using
ONOS-specific protocol extensions.
The FPM client (i.e. zebra) will send keepalive messages periodically
on the FPM TCP connections. The keepalive message is designated by a
new message type. Keepalive messages have no body.