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daemon: accept feechange packets.

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Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This commit is contained in:
Rusty Russell
2016-08-26 15:33:30 +09:30
parent e7b003b499
commit 31bdf384cb
4 changed files with 56 additions and 1 deletions
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1
daemon/db.c
View File

@@ -510,7 +510,6 @@ static void load_peer_htlcs(struct peer *peer)
struct htlc *htlc;
struct sha256 rhash;
enum htlc_state hstate;
u64 id;
if (err != SQLITE_ROW)
fatal("load_peer_htlcs:step gave %s:%s",

8
daemon/packets.c
View File

@@ -483,6 +483,14 @@ Pkt *accept_pkt_htlc_fulfill(struct peer *peer, const Pkt *pkt, struct htlc **h,
return NULL;
}
Pkt *accept_pkt_update_fee(struct peer *peer, const Pkt *pkt, u64 *feerate)
{
const UpdateFee *f = pkt->update_fee;
*feerate = f->fee_rate;
return NULL;
}
Pkt *accept_pkt_commit(struct peer *peer, const Pkt *pkt,
struct bitcoin_signature *sig)
{

2
daemon/packets.h
View File

@@ -49,6 +49,8 @@ Pkt *accept_pkt_htlc_fail(struct peer *peer, const Pkt *pkt, struct htlc **h);
Pkt *accept_pkt_htlc_fulfill(struct peer *peer, const Pkt *pkt, struct htlc **h,
bool *was_already_fulfilled);
Pkt *accept_pkt_update_fee(struct peer *peer, const Pkt *pkt, u64 *feerate);
Pkt *accept_pkt_update_accept(struct peer *peer, const Pkt *pkt);
Pkt *accept_pkt_commit(struct peer *peer, const Pkt *pkt,

46
daemon/peer.c
View File

@@ -1091,6 +1091,45 @@ static Pkt *handle_pkt_htlc_fulfill(struct peer *peer, const Pkt *pkt)
return NULL;
}
static void set_feechange(struct peer *peer, u64 fee_rate,
enum feechange_state state)
{
/* If we already have a feechange for this commit, simply update it. */
if (peer->feechanges[state]) {
log_debug(peer->log, "Feechange: fee %"PRIu64" to %"PRIu64,
peer->feechanges[state]->fee_rate,
fee_rate);
peer->feechanges[state]->fee_rate = fee_rate;
} else {
log_debug(peer->log, "Feechange: New fee %"PRIu64, fee_rate);
peer->feechanges[state] = new_feechange(peer, fee_rate, state);
}
}
static Pkt *handle_pkt_feechange(struct peer *peer, const Pkt *pkt)
{
u64 feerate;
Pkt *err;
err = accept_pkt_update_fee(peer, pkt, &feerate);
if (err)
return err;
/* BOLT #2:
*
* The sending node MUST NOT send a `fee_rate` which it could not
* afford (see "Fee Calculation), were it applied to the receiving
* node's commitment transaction. The receiving node SHOULD fail the
* connection if this occurs.
*/
if (!can_afford_feerate(peer->local.staging_cstate, feerate, REMOTE))
return pkt_err(peer, "Cannot afford feerate %"PRIu64,
feerate);
set_feechange(peer, feerate, RCVD_FEECHANGE);
return NULL;
}
static Pkt *handle_pkt_revocation(struct peer *peer, const Pkt *pkt,
enum state next_state)
{
@@ -1262,6 +1301,9 @@ static bool shutdown_pkt_in(struct peer *peer, const Pkt *pkt)
case PKT__PKT_UPDATE_FAIL_HTLC:
err = handle_pkt_htlc_fail(peer, pkt);
break;
case PKT__PKT_UPDATE_FEE:
err = handle_pkt_feechange(peer, pkt);
break;
case PKT__PKT_UPDATE_COMMIT:
err = handle_pkt_commit(peer, pkt);
break;
@@ -1368,6 +1410,10 @@ static bool normal_pkt_in(struct peer *peer, const Pkt *pkt)
err = handle_pkt_htlc_fail(peer, pkt);
break;
case PKT__PKT_UPDATE_FEE:
err = handle_pkt_feechange(peer, pkt);
break;
case PKT_UPDATE_COMMIT:
err = handle_pkt_commit(peer, pkt);
break;