Function fulfill_htlc

lightningd/peer_htlcs.c:317–358

}

void fulfill_htlc(struct htlc_in *hin, const struct preimage *preimage)
{
	u8 *msg;
	struct channel *channel = hin->key.channel;
	struct wallet *wallet = channel->peer->ld->wallet;

	if (hin->hstate != RCVD_ADD_ACK_REVOCATION) {
		log_debug(channel->log,
			  "HTLC fulfilled, but not ready any more (%s).",
			  htlc_state_name(hin->hstate));
		return;
	}

	hin->preimage = tal_dup(hin, struct preimage, preimage);

	/* We update state now to signal it's in progress, for persistence. */
	htlc_in_update_state(channel, hin, SENT_REMOVE_HTLC);

	htlc_in_check(hin, __func__);

	/* Update channel stats */
	wallet_channel_stats_incr_in_fulfilled(wallet,
					       channel->dbid,
					       hin->msat);

	/* No owner?  We'll either send to channeld in peer_htlcs, or
	 * onchaind in onchaind_tell_fulfill. */
	if (!channel->owner) {
		log_debug(channel->log, "HTLC fulfilled, but no owner.");
		return;
	}

	if (channel_on_chain(channel)) {
		msg = towire_onchaind_known_preimage(hin, preimage);
	} else {
		struct fulfilled_htlc fulfilled_htlc;
		fulfilled_htlc.id = hin->key.id;
		fulfilled_htlc.payment_preimage = *preimage;
		msg = towire_channeld_fulfill_htlc(hin, &fulfilled_htlc);
	}
	subd_send_msg(channel->owner, take(msg));
}

static void handle_localpay(struct htlc_in *hin,
			    struct amount_msat amt_to_forward,