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56 Commits

Author SHA1 Message Date
Rusty Russell ada1eb5106 lightningd/channel.c: add callbacks for when HTLCs fully committed/removed. 
The three cases we care about only happen on specific transitions:
1. They can no longer spend our failed HTLC: we can fail the source now.
2. They are fully committed to their new HTLC htlc: we can forward now.
3. They can no longer timeout their fulfilled HTLC: the funds are ours.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
 2017-04-01 23:59:46 +10:30
Rusty Russell 075092411e lightningd/channel: generate htlc txs and wscripts as well. 
In practice, this is what we want, either to generate or check signatures.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
 2017-04-01 23:59:46 +10:30
Rusty Russell 3a9c559dc6 lightningd/channel: quote BOLT #2 for checking expiry. 
https://github.com/lightningnetwork/lightning-rfc/pull/138:

	 BOLT 2: htlc-cltv must be in blocks.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
 2017-04-01 23:59:46 +10:30
Rusty Russell c64447a929 lightningd/derive_basepoints: hoist derivation logic. 
All the daemons will use a common seed for point derivation, so drag
it out of lightningd/opening.

This also provide a nice struct wrapper to reduce argument count.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
 2017-03-07 11:37:06 +10:30
Rusty Russell 5514f4fadf lightningd/channel.h: fix comment typo. 
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
 2017-03-06 12:23:58 +10:30
Rusty Russell 4a7418e3db channel: object to track channel state. 
This object is basically the embodyment of BOLT #2.  Each HTLC already
knows its own state; this moves them between states and keeps them
consistent.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
 2017-02-21 15:15:28 +10:30