timers: only have initiator rekey

If it's time to rekey, and the responder sends a message, the initator
will begin the rekeying when sending his response message. In the worst
case, this response message will actually just be the keepalive. This
generally works well, with the one edge case of the message arriving
less than 10 seconds before key expiration, in which the keepalive is
not sufficient. In this case, we simply rehandshake immediately.

Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>

0 files changed, 0 insertions, 0 deletions