To do this we keep an order counter so we know how to retransmit. We
could simply keep old packets, but this is a little clearer for now.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Since we only care about the latest commits, we can simply associate a
state with each HTLC, rather than using queues of HTLCs associated
with each commitment transaction.
This works far better in the context of a database.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Rusty Russell