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lightningd: handle fail_htlc_in with no known outgoing channel.

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Turn it into temporary node failure: this only happens if we restart
with a failed htlc in, but it's clearer and more robust to handle it
generically.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This commit is contained in:
Rusty Russell 2020-02-18 10:26:58 +10:30
parent bb9b761dda
commit c7bbdd76d3
2 changed files with 11 additions and 9 deletions
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11
lightningd/peer_htlcs.c
View file

@ -109,8 +109,16 @@ static void fail_in_htlc(struct htlc_in *hin,
hin->failonion = dup_onionreply(hin, failonion);
/* We need this set, since we send it to channeld. */
if (hin->failcode & UPDATE)
if (hin->failcode & UPDATE) {
/* We don't save the outgoing channel which failed; probably
* not worth it for this corner case. So we can't set
* hin->failoutchannel to tell channeld what update to send,
* thus we turn those into a WIRE_TEMPORARY_NODE_FAILURE. */
if (!out_channelid)
hin->failcode = WIRE_TEMPORARY_NODE_FAILURE;
else
hin->failoutchannel = *out_channelid;
}
/* We update state now to signal it's in progress, for persistence. */
htlc_in_update_state(hin->key.channel, hin, SENT_REMOVE_HTLC);
@ -2167,6 +2175,7 @@ static const struct json_command dev_ignore_htlcs = {
"Set ignoring incoming HTLCs for peer {id} to {ignore}", false,
"Set/unset ignoring of all incoming HTLCs. For testing only."
};
AUTODATA(json_command, &dev_ignore_htlcs);
#endif /* DEVELOPER */

7
wallet/wallet.c
View file

@ -1904,13 +1904,6 @@ static bool wallet_stmt2htlc_out(struct wallet *wallet,
static void fixup_hin(struct wallet *wallet, struct htlc_in *hin)
{
/* We don't save the outgoing channel which failed; probably not worth
* it for this corner case. So we can't set hin->failoutchannel to
* tell channeld what update to send, thus we turn those into a
* WIRE_TEMPORARY_NODE_FAILURE. */
if (hin->failcode & UPDATE)
hin->failcode = WIRE_TEMPORARY_NODE_FAILURE;
/* We didn't used to save failcore, failonion... */
#ifdef COMPAT_V061
/* We care about HTLCs being removed only, not those being added. */