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Rusty Russell
1556315f2e test_state_coverage: simple exhaustive coverage test for state machine. 
Makes sure that we visit every state.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
 2015-09-25 11:51:18 +09:30
Rusty Russell
5730b118f1 Some more ccan objs. 
These are LGPL, but only used for tests.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
 2015-09-25 11:51:18 +09:30
Rusty Russell
847ef21c07 state: Core state machine for lightning. 
It's written in a repetitive and stylized form, for easier testing.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
 2015-09-25 11:51:18 +09:30
Rusty Russell
669479b671 gen_state_names.h: printable names for state_types enums. 
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
 2015-09-25 11:51:18 +09:30
Rusty Russell
1fca363b31 state_types: types for state machine. 
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
 2015-09-25 11:51:18 +09:30
Rusty Russell
1b2de5c830 CCAN: add cdump. 
Used to print enums.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
 2015-09-25 11:51:18 +09:30
Rusty Russell
3b0aca81f5 CCAN: update. 
Trivial updae.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
 2015-09-25 11:51:18 +09:30
Rusty Russell
f0cab4e74b gather_updates: fix rebase error. 
Didn't update amount field in d00eeded9f.
Didn't compile test either :(

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
 2015-09-25 11:50:24 +09:30
Rusty Russell
8af4619406 Makefile: neaten 
Reduces gratuitous patch conflicts in future.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
 2015-09-24 15:03:20 +09:30
Rusty Russell
02a563ba82 protocol: renumber. 
Use lower numbers and clean up.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
 2015-09-24 15:02:54 +09:30
Rusty Russell
fefe2deea2 protocol: add a third leg to the close operation. 
This gives us a neat way to know the other end has received our sig.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
 2015-09-24 15:02:52 +09:30
Rusty Russell
d00eeded9f protocol: split message update_remove_htlc into update_timedout_htlc and update_routefail_htlc, remove update_remove_htlc_delay. 
For the moment, there's no way to remove an in-progress HTLC before
it's timed out.  The other side can remove it with a routefail, but
you can't push for it to be removed.

We may add that later, but by definition it's only a polited request, and
normally we should rely on timeouts.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
 2015-09-24 15:02:49 +09:30
Rusty Russell
807ac38308 protocol: add decline response for HTLC. 
We don't have to accept an HTLC they offer; we might not be able to
route it, or it might offer insufficient payment.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
 2015-09-24 15:02:46 +09:30
Rusty Russell
5bc22f0368 protocol: increase HTLC precision to 1/1000 satoshi. 
This gets truncated for on-chain transactions (thus, rounding may
contribute to fees).

This also means we currently have an upper bound of 0.04 BTC per HTLC;
this can be increased later if required.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
 2015-09-24 15:00:47 +09:30
Rusty Russell
58a62e782d bitcoin/script: don't pass value for HTLC script. 
We don't need it.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
 2015-09-24 14:56:01 +09:30
Rusty Russell
186736050f test-cli: fix alpha case. 
The output of grep confuses the scripts.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
 2015-09-24 14:41:55 +09:30
Rusty Russell
bc056fbc4d doc/deployable-lightning: point out that Fig 4 is simplified. 
Fixes #4

Reported-by: Pierre <pm+lists@acinq.fr>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
 2015-09-15 04:23:25 +09:30
Rusty Russell
71c56e0360 doc: biblopgraphy update 
Thanks to Anthony Towns for digging this up.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
 2015-09-11 10:20:47 +09:30
Rusty Russell
17471d0788 Merge pull request #3 from pm47/master 
explicitely specified proto version
 2015-08-20 13:09:04 +09:30
pm47
d97c68717b explicitely specified proto version 2015-08-19 12:41:18 +02:00
Rusty Russell
785b061034 Merge branch 'pm47-master' 2015-08-19 11:32:39 +09:30
pm47
a97d390128 fixed typos in pdf 2015-08-18 12:03:28 +02:00
Rusty Russell
1cb147c5b8 Version number, name, and build details. 
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
 2015-08-08 20:45:49 +09:30
Rusty Russell
6883d28f6d doc: move dual anchor with escapes to Appendix B. 
Draft 0.2; we use a single-sided anchor now, for simplicity.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
 2015-08-08 20:43:43 +09:30
Rusty Russell
3311580c62 scripts/test.sh: fix bitcoin case. 
Now we use locktime, bitcoin needs delay too.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
 2015-08-08 15:02:50 +09:30
Rusty Russell
0b33da08c1 scripts: auto-detect alpha vs bitcoin 
A bit hacky, but saves editing two places.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
 2015-08-08 15:02:43 +09:30
Rusty Russell
6cea21750d HOWTO-USE.md: Just refer to test scripts. 
This has fallen behind.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
 2015-08-08 15:01:34 +09:30
Rusty Russell
3b214479ae test-cli/scripts/test.sh: basic HTLC spending test. 
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
 2015-08-07 16:20:52 +09:30
Rusty Russell
fcbba0280d test-cli/create-htlc-spend-tx: new util. 
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
 2015-08-07 16:20:45 +09:30
Rusty Russell
bafc93886f test-cli/scripts/test.sh: basic HTLC creation test. 
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
 2015-08-07 14:15:05 +09:30
Rusty Russell
b5ff69e236 test-cli/update-channel-htlc-remove: new util. 
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
 2015-08-07 14:15:01 +09:30
Rusty Russell
9b0ed51f2b test-cli/update-channel-htlc-complete: new util. 
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
 2015-08-07 14:14:46 +09:30
Rusty Russell
5778b004dd test-cli/update-channel-htlc: new util. 
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
 2015-08-07 14:13:35 +09:30
Rusty Russell
7ed0b461aa commit_tx: add HTLCs. 
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
 2015-08-07 14:13:35 +09:30
Rusty Russell
106c447d17 gather_updates: handle HTLC updates. 
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
 2015-08-07 14:13:35 +09:30
Rusty Russell
769f9f1cc5 gather_updates: extract some update logic into update_rhash. 
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
 2015-08-07 14:13:29 +09:30
Rusty Russell
f0df2b7930 channel_state: add htlcs array. 
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
 2015-08-07 12:45:30 +09:30
Rusty Russell
a09c0a9fa7 funding: take into account HTLC add/remove. 
Enhance funding_delta() to have an HTLC delta as well as an A->B delta.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
 2015-08-07 12:45:30 +09:30
Rusty Russell
88ca0c91d9 doc: document HTLC 2drop optimization. 
We can save an opcode in both HTLC send and receive scripts by using
OP_2DROP instead of OP_DROP twice.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
 2015-08-07 12:45:30 +09:30
Rusty Russell
08ae4a687d script: HTLC support. 
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
 2015-08-07 12:45:30 +09:30
Rusty Russell
9a0163ec85 proto_to_locktime: abs and relative locktime handlers. 
Our current proto_to_locktime actually handles relative locktimes,
and HTLCs use absolute.  Fix that.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
 2015-08-07 12:45:30 +09:30
Rusty Russell
7f21695a63 protocol: rename locktime fields to "delay" and "expiry" 
For open transactions, locktime is a delay we require on the other
side's to-self commit transaction outputs to ensure we can cut them
off if necessary.

For HTLCs, it's an absolute expiry time.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
 2015-08-07 12:45:30 +09:30
Rusty Russell
3325c7320d protocol: add HTLC 
Proposing an HTLC follows the same sequence as proposing a normal
update.  There's also requests to complete and remove HTLCs.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
 2015-08-07 12:45:30 +09:30
Rusty Russell
a4dfe3ad72 channel_state: encapsulate funding of channel in one place. 
This shows where funds are going at any time (fees vs to each side).
funding.c is mainly rewritten, and should be clearer now.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
 2015-08-07 12:45:30 +09:30
Rusty Russell
cf3433a0ad script: add OP_CHECKLOCKTIMEVERIFY. 
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
 2015-08-07 12:45:30 +09:30
Rusty Russell
0170ad4abd script: add add_push_le32 helper. 
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
 2015-08-07 12:45:30 +09:30
Rusty Russell
81bced330a protocol: move locktime into its own message type. 
We're going to want this for HTLC times, too.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
 2015-08-07 12:45:30 +09:30
Rusty Russell
d9f2b37a05 commit_tx: remove to_me weirdness. 
It's a synonym for theirkey.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
 2015-08-07 12:45:20 +09:30
Rusty Russell
142e822342 test-cli/update-channel-signature: remove debugging message. 
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
 2015-08-05 16:54:53 +09:30
Rusty Russell
e489ff80c0 commit_tx: remove debugging printf. 
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
 2015-08-03 16:43:57 +09:30