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dual-fund: send the next_funding_txid to peer

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As per cd3c99e722
we should send the next_funding_txid if we've sent our commitment sigs,
but we haven't received the peer's tx_signatures.

Note that we send here, but don't verify that it's arrived.
This commit is contained in:
niftynei 2023-07-07 01:10:06 -05:00 committed by Rusty Russell
parent 0cd7fe5089
commit e366c19d09
1 changed files with 17 additions and 1 deletions
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18
openingd/dualopend.c
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@ -3978,10 +3978,26 @@ static void do_reconnect_dance(struct state *state)
sizeof(last_remote_per_commit_secret));
/* We always send reconnect/reestablish */
/* BOLT-e299850cb5ebd8bd9c55763bbc498fcdf94a9567 #2:
*
* - if it has sent `commitment_signed` for an
* interactive transaction construction but it has
* not received `tx_signatures`:
* - MUST set `next_funding_txid` to the txid of that
* interactive transaction.
* - otherwise:
* - MUST NOT set `next_funding_txid`.
*/
tlvs = tlv_channel_reestablish_tlvs_new(tmpctx);
if (!tx_state->remote_funding_sigs_rcvd)
tlvs->next_funding = &tx_state->funding.txid;
msg = towire_channel_reestablish
(NULL, &state->channel_id, 1, 0,
&last_remote_per_commit_secret,
&state->first_per_commitment_point[LOCAL], NULL);
&state->first_per_commitment_point[LOCAL], tlvs);
peer_write(state->pps, take(msg));
peer_billboard(false, "Sent reestablish, waiting for theirs");