Sjoerd Simons authored Jan 28, 2011 and Youness Alaoui committed Feb 09, 2011

Current nice has a race where if the remote site only punches their side
of the NAT after we have done the maximum number of retransmissions,
we'll never send a new connectivity check (which would be successful).
Causing the connectiviy check to fail eventually, even though it
shouldn't have.

By resetting the conncheck timer nice will always send new stun packets
for connectivity checks afterwards, but also sent connectivity checks
quicker so we can establish the connection quicker.