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lightningd: consider old scids when looking up channels (for routing).

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Changelog-Fixed: Protocol: we now allow routing through old short-channel-ids once a splice is done (previously we would refuse, leading to a 6 block gap in service).
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This commit is contained in:
Rusty Russell
2025-08-14 12:40:11 +09:30
parent 4abd0af3ec
commit d70fc13b54
2 changed files with 7 additions and 1 deletions
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6
lightningd/channel.c
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@@ -793,6 +793,12 @@ struct channel *any_channel_by_scid(struct lightningd *ld,
if (chan->scid
&& short_channel_id_eq(scid, *chan->scid))
return chan;
/* Look through any old pre-splice channel ids */
for (size_t i = 0; i < tal_count(chan->old_scids); i++) {
if (short_channel_id_eq(scid, chan->old_scids[i]))
return chan;
}
}
}
return NULL;

2
tests/test_splicing.py
View File

@@ -499,7 +499,7 @@ def test_splice_stuck_htlc(node_factory, bitcoind, executor):
assert l1.db_query("SELECT count(*) as c FROM channeltxs;")[0]['c'] == 0
@pytest.mark.xfail(strict=True)
@unittest.skipIf(TEST_NETWORK != 'regtest', 'elementsd doesnt yet support PSBT features we need')
def test_route_by_old_scid(node_factory, bitcoind):
l1, l2, l3 = node_factory.line_graph(3, wait_for_announce=True, opts={'experimental-splicing': None})