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htlc: save fail message in HTLC.

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It's not currently encrypted, but at least you get some idea now why
an HTLC failed.  We (ab)use HTTP error codes for the moment.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This commit is contained in:
Rusty Russell
2016-08-31 14:51:41 +09:30
parent 169c6b53cb
commit d4ddebd55a
14 changed files with 445 additions and 76 deletions
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15
daemon/packets.c
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@@ -171,9 +171,11 @@ void queue_pkt_htlc_fail(struct peer *peer, struct htlc *htlc)
update_fail_htlc__init(f);
f->id = htlc->id;
/* FIXME: reason! */
f->reason = tal(f, FailReason);
fail_reason__init(f->reason);
f->reason->info.len = tal_count(htlc->fail);
f->reason->info.data = tal_dup_arr(f->reason, u8,
htlc->fail, f->reason->info.len, 0);
queue_pkt(peer, PKT__PKT_UPDATE_FAIL_HTLC, f);
}
@@ -451,7 +453,16 @@ Pkt *accept_pkt_htlc_fail(struct peer *peer, const Pkt *pkt, struct htlc **h)
if (err)
return err;
/* FIXME: Save reason. */
if ((*h)->r)
return pkt_err(peer, "HTLC %"PRIu64" already fulfilled",
(*h)->id);
/* This can happen with re-transmissions; simply note it. */
if ((*h)->fail) {
log_debug(peer->log, "HTLC %"PRIu64" failed twice", (*h)->id);
(*h)->fail = tal_free((*h)->fail);
}
set_htlc_fail(peer, *h, f->reason->info.data, f->reason->info.len);
return NULL;
}