Function update_recent_timestamp

connectd/multiplex.c:215–229

It's so common to ask for "recent" gossip (we ask for 10 minutes * ago, LND and Eclair ask for now, LDK asks for 1 hour ago) that it's * worth keeping track of where that starts, so we can skip most of * the store. */

 * worth keeping track of where that starts, so we can skip most of
 * the store. */
static void update_recent_timestamp(struct daemon *daemon)
{
	/* 2 hours allows for some clock drift, not too much gossip */
	u32 recent = time_now().ts.tv_sec - 7200;

	/* Only update every minute */
	if (daemon->gossip_recent_time + 60 > recent)
		return;

	daemon->gossip_recent_time = recent;
	daemon->gossip_store_recent_off
		= find_gossip_store_by_timestamp(daemon->gossip_store_fd,
						 daemon->gossip_store_recent_off,
						 daemon->gossip_recent_time);
}

/* This is called once we need it: otherwise, the gossip_store may not exist,
 * since we start at the same time as gossipd itself. */