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forever-confirms: warn if less than 100.

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BOLT #onchain considers 100 the minimum depth to be "irrevocable".

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This commit is contained in:
Rusty Russell 2016-05-04 16:12:50 +09:30
parent 5eb50345ae
commit c94f77fd14
1 changed files with 13 additions and 0 deletions
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13
daemon/lightningd.c
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@ -125,6 +125,14 @@ static void default_config(struct config *config)
config->anchor_confirms_max = 10;
/* At some point, you've got to let it go... */
/* BOLT #onchain:
*
* Outputs... are considered *irrevocably resolved* once they
* are included in a block at least 100 deep on the most-work
* blockchain. 100 blocks is far greater than the longest
* known bitcoin fork, and the same value used to wait for
* confirmations of miner's rewards[1].
*/
config->forever_confirms = 100;
/* FIXME: These should float with bitcoind's recommendations! */
@ -166,6 +174,11 @@ static void check_config(struct lightningd_state *dstate)
" can't exceed commitment fee rate %"PRIu64,
dstate->config.commitment_fee_rate_min,
dstate->config.commitment_fee_rate);
if (dstate->config.forever_confirms < 100)
log_unusual(dstate->base_log,
"Warning: forever-confirms of %u is less than 100!",
dstate->config.forever_confirms);
}
static struct lightningd_state *lightningd_state(void)