input/size: split constants into confirmed/non-confirmed

This to more easily track mismatches if constants and get more accurate
fee estimates for the two channel types.

The non-anchor weight estimates will now be smaller, this is okay since
these constants are only being used for fee estimation (and will now be
more accurate).

input/size.go

@@ -286,7 +286,7 @@ const (
 	//      - witness_script (to_remote_delayed_script)
 	ToRemoteConfirmedWitnessSize = 1 + 1 + 73 + 1 + ToRemoteConfirmedScriptSize
 
-	// AcceptedHtlcScriptSize 143 bytes
+	// AcceptedHtlcScriptSize 140 bytes
 	//      - OP_DUP: 1 byte
 	//      - OP_HASH160: 1 byte
 	//      - OP_DATA: 1 byte (RIPEMD160(SHA256(revocationkey)) length)
@@ -321,20 +321,18 @@ const (
 	//                      - OP_DROP: 1 byte
 	//                      - OP_CHECKSIG: 1 byte
 	//              - OP_ENDIF: 1 byte
-	//              - OP_1: 1 byte		// These 3 extra bytes are used for both confirmed and regular
+	//              - OP_1: 1 byte		// These 3 extra bytes are only
-	//              - OP_CSV: 1 byte	// HTLC script types. The size won't be correct in all cases,
+	//              - OP_CSV: 1 byte	// present for the confirmed
-	//              - OP_DROP: 1 byte	// but it is just an upper bound used for fee estimation in any case.
+	//              - OP_DROP: 1 byte	// HTLC script types.
 	//      - OP_ENDIF: 1 byte
 	AcceptedHtlcScriptSize = 3*1 + 20 + 5*1 + 33 + 8*1 + 20 + 4*1 +
-		33 + 5*1 + 4 + 8*1
+		33 + 5*1 + 4 + 5*1
 
 	// AcceptedHtlcScriptSizeConfirmed 143 bytes
-	//
+	AcceptedHtlcScriptSizeConfirmed = AcceptedHtlcScriptSize +
-	// TODO(halseth): the non-confirmed version currently includes the
+		HtlcConfirmedScriptOverhead
-	// overhead.
-	AcceptedHtlcScriptSizeConfirmed = AcceptedHtlcScriptSize // + HtlcConfirmedScriptOverhead
 
-	// AcceptedHtlcTimeoutWitnessSize 219
+	// AcceptedHtlcTimeoutWitnessSize 216
 	//      - number_of_witness_elements: 1 byte
 	//      - sender_sig_length: 1 byte
 	//      - sender_sig: 73 bytes
@@ -343,7 +341,11 @@ const (
 	//      - witness_script: (accepted_htlc_script)
 	AcceptedHtlcTimeoutWitnessSize = 1 + 1 + 73 + 1 + 1 + AcceptedHtlcScriptSize
 
-	// AcceptedHtlcPenaltyWitnessSize 252 bytes
+	// AcceptedHtlcTimeoutWitnessSizeConfirmed 219 bytes
+	AcceptedHtlcTimeoutWitnessSizeConfirmed = 1 + 1 + 73 + 1 + 1 +
+		AcceptedHtlcScriptSizeConfirmed
+
+	// AcceptedHtlcPenaltyWitnessSize 249 bytes
 	//      - number_of_witness_elements: 1 byte
 	//      - revocation_sig_length: 1 byte
 	//      - revocation_sig: 73 bytes
@@ -353,7 +355,11 @@ const (
 	//      - witness_script (accepted_htlc_script)
 	AcceptedHtlcPenaltyWitnessSize = 1 + 1 + 73 + 1 + 33 + 1 + AcceptedHtlcScriptSize
 
-	// AcceptedHtlcSuccessWitnessSize 322 bytes
+	// AcceptedHtlcPenaltyWitnessSizeConfirmed 252 bytes
+	AcceptedHtlcPenaltyWitnessSizeConfirmed = 1 + 1 + 73 + 1 + 33 + 1 +
+		AcceptedHtlcScriptSizeConfirmed
+
+	// AcceptedHtlcSuccessWitnessSize 319 bytes
 	//      - number_of_witness_elements: 1 byte
 	//      - nil_length: 1 byte
 	//      - sig_alice_length: 1 byte
@@ -364,16 +370,18 @@ const (
 	//      - preimage: 32 bytes
 	//      - witness_script_length: 1 byte
 	//      - witness_script (accepted_htlc_script)
+	//
+	// Input to second level success tx, spending non-delayed HTLC output.
 	AcceptedHtlcSuccessWitnessSize = 1 + 1 + 1 + 73 + 1 + 73 + 1 + 32 + 1 +
 		AcceptedHtlcScriptSize
 
-	// AcceptedHtlcSuccessWitnessSizeConfirmed 327 bytes
+	// AcceptedHtlcSuccessWitnessSizeConfirmed 322 bytes
 	//
 	// Input to second level success tx, spending 1 CSV delayed HTLC output.
 	AcceptedHtlcSuccessWitnessSizeConfirmed = 1 + 1 + 1 + 73 + 1 + 73 + 1 + 32 + 1 +
 		AcceptedHtlcScriptSizeConfirmed
 
-	// OfferedHtlcScriptSize 136 bytes
+	// OfferedHtlcScriptSize 133 bytes
 	//      - OP_DUP: 1 byte
 	//      - OP_HASH160: 1 byte
 	//      - OP_DATA: 1 byte (RIPEMD160(SHA256(revocationkey)) length)
@@ -404,19 +412,17 @@ const (
 	//                      - OP_EQUALVERIFY: 1 byte
 	//                      - OP_CHECKSIG: 1 byte
 	//              - OP_ENDIF: 1 byte
-	//              - OP_1: 1 byte
+	//              - OP_1: 1 byte		// These 3 extra bytes are only
-	//              - OP_CSV: 1 byte
+	//              - OP_CSV: 1 byte	// present for the confirmed
-	//              - OP_DROP: 1 byte
+	//              - OP_DROP: 1 byte	// HTLC script types.
 	//      - OP_ENDIF: 1 byte
-	OfferedHtlcScriptSize = 3*1 + 20 + 5*1 + 33 + 10*1 + 33 + 5*1 + 20 + 7*1
+	OfferedHtlcScriptSize = 3*1 + 20 + 5*1 + 33 + 10*1 + 33 + 5*1 + 20 + 4*1
 
 	// OfferedHtlcScriptSizeConfirmed 136 bytes
-	//
+	OfferedHtlcScriptSizeConfirmed = OfferedHtlcScriptSize +
-	// TODO(halseth): the non-confirmed version currently includes the
+		HtlcConfirmedScriptOverhead
-	// overhead.
-	OfferedHtlcScriptSizeConfirmed = OfferedHtlcScriptSize // + HtlcConfirmedScriptOverhead
 
-	// OfferedHtlcSuccessWitnessSize 245 bytes
+	// OfferedHtlcSuccessWitnessSize 242 bytes
 	//      - number_of_witness_elements: 1 byte
 	//      - receiver_sig_length: 1 byte
 	//      - receiver_sig: 73 bytes
@@ -426,7 +432,11 @@ const (
 	//      - witness_script (offered_htlc_script)
 	OfferedHtlcSuccessWitnessSize = 1 + 1 + 73 + 1 + 32 + 1 + OfferedHtlcScriptSize
 
-	// OfferedHtlcTimeoutWitnessSize 285 bytes
+	// OfferedHtlcSuccessWitnessSizeConfirmed 245 bytes
+	OfferedHtlcSuccessWitnessSizeConfirmed = 1 + 1 + 73 + 1 + 32 + 1 +
+		OfferedHtlcScriptSizeConfirmed
+
+	// OfferedHtlcTimeoutWitnessSize 282 bytes
 	//      - number_of_witness_elements: 1 byte
 	//      - nil_length: 1 byte
 	//      - sig_alice_length: 1 byte
@@ -436,15 +446,18 @@ const (
 	//      - nil_length: 1 byte
 	//      - witness_script_length: 1 byte
 	//      - witness_script (offered_htlc_script)
-	OfferedHtlcTimeoutWitnessSize = 1 + 1 + 1 + 73 + 1 + 73 + 1 + 1 + OfferedHtlcScriptSize
+	//
+	// Input to second level timeout tx, spending non-delayed HTLC output.
+	OfferedHtlcTimeoutWitnessSize = 1 + 1 + 1 + 73 + 1 + 73 + 1 + 1 +
+		OfferedHtlcScriptSize
 
-	// OfferedHtlcTimeoutWitnessSizeConfirmed 288 bytes
+	// OfferedHtlcTimeoutWitnessSizeConfirmed 285 bytes
 	//
 	// Input to second level timeout tx, spending 1 CSV delayed HTLC output.
 	OfferedHtlcTimeoutWitnessSizeConfirmed = 1 + 1 + 1 + 73 + 1 + 73 + 1 + 1 +
 		OfferedHtlcScriptSizeConfirmed
 
-	// OfferedHtlcPenaltyWitnessSize 246 bytes
+	// OfferedHtlcPenaltyWitnessSize 243 bytes
 	//      - number_of_witness_elements: 1 byte
 	//      - revocation_sig_length: 1 byte
 	//      - revocation_sig: 73 bytes
@@ -454,6 +467,10 @@ const (
 	//      - witness_script (offered_htlc_script)
 	OfferedHtlcPenaltyWitnessSize = 1 + 1 + 73 + 1 + 33 + 1 + OfferedHtlcScriptSize
 
+	// OfferedHtlcPenaltyWitnessSizeConfirmed 246 bytes
+	OfferedHtlcPenaltyWitnessSizeConfirmed = 1 + 1 + 73 + 1 + 33 + 1 +
+		OfferedHtlcScriptSizeConfirmed
+
 	// AnchorScriptSize 40 bytes
 	//      - pubkey_length: 1 byte
 	//      - pubkey: 33 bytes

input/size_test.go

@@ -485,7 +485,7 @@ var witnessSizeTests = []witnessSizeTest{
 	},
 	{
 		name:    "offered htlc revoke",
-		expSize: input.OfferedHtlcPenaltyWitnessSize - 3,
+		expSize: input.OfferedHtlcPenaltyWitnessSize,
 		genWitness: func(t *testing.T) wire.TxWitness {
 			witScript, err := input.SenderHTLCScript(
 				testPubkey, testPubkey, testPubkey,
@@ -515,7 +515,7 @@ var witnessSizeTests = []witnessSizeTest{
 	},
 	{
 		name:    "offered htlc revoke confirmed",
-		expSize: input.OfferedHtlcPenaltyWitnessSize,
+		expSize: input.OfferedHtlcPenaltyWitnessSizeConfirmed,
 		genWitness: func(t *testing.T) wire.TxWitness {
 			hash := make([]byte, 20)
 
@@ -547,7 +547,7 @@ var witnessSizeTests = []witnessSizeTest{
 	},
 	{
 		name:    "offered htlc timeout",
-		expSize: input.OfferedHtlcTimeoutWitnessSize - 3,
+		expSize: input.OfferedHtlcTimeoutWitnessSize,
 		genWitness: func(t *testing.T) wire.TxWitness {
 			witScript, err := input.SenderHTLCScript(
 				testPubkey, testPubkey, testPubkey,
@@ -574,7 +574,7 @@ var witnessSizeTests = []witnessSizeTest{
 	},
 	{
 		name:    "offered htlc timeout confirmed",
-		expSize: input.OfferedHtlcTimeoutWitnessSize,
+		expSize: input.OfferedHtlcTimeoutWitnessSizeConfirmed,
 		genWitness: func(t *testing.T) wire.TxWitness {
 			witScript, err := input.SenderHTLCScript(
 				testPubkey, testPubkey, testPubkey,
@@ -601,7 +601,7 @@ var witnessSizeTests = []witnessSizeTest{
 	},
 	{
 		name:    "offered htlc success",
-		expSize: input.OfferedHtlcSuccessWitnessSize - 3,
+		expSize: input.OfferedHtlcSuccessWitnessSize,
 		genWitness: func(t *testing.T) wire.TxWitness {
 			witScript, err := input.SenderHTLCScript(
 				testPubkey, testPubkey, testPubkey,
@@ -627,7 +627,7 @@ var witnessSizeTests = []witnessSizeTest{
 	},
 	{
 		name:    "offered htlc success confirmed",
-		expSize: input.OfferedHtlcSuccessWitnessSize,
+		expSize: input.OfferedHtlcSuccessWitnessSizeConfirmed,
 		genWitness: func(t *testing.T) wire.TxWitness {
 			witScript, err := input.SenderHTLCScript(
 				testPubkey, testPubkey, testPubkey,
@@ -653,7 +653,7 @@ var witnessSizeTests = []witnessSizeTest{
 	},
 	{
 		name:    "accepted htlc revoke",
-		expSize: input.AcceptedHtlcPenaltyWitnessSize - 3,
+		expSize: input.AcceptedHtlcPenaltyWitnessSize,
 		genWitness: func(t *testing.T) wire.TxWitness {
 			witScript, err := input.ReceiverHTLCScript(
 				testCLTVExpiry, testPubkey, testPubkey,
@@ -683,7 +683,7 @@ var witnessSizeTests = []witnessSizeTest{
 	},
 	{
 		name:    "accepted htlc revoke confirmed",
-		expSize: input.AcceptedHtlcPenaltyWitnessSize,
+		expSize: input.AcceptedHtlcPenaltyWitnessSizeConfirmed,
 		genWitness: func(t *testing.T) wire.TxWitness {
 			witScript, err := input.ReceiverHTLCScript(
 				testCLTVExpiry, testPubkey, testPubkey,
@@ -713,7 +713,7 @@ var witnessSizeTests = []witnessSizeTest{
 	},
 	{
 		name:    "accepted htlc timeout",
-		expSize: input.AcceptedHtlcTimeoutWitnessSize - 3,
+		expSize: input.AcceptedHtlcTimeoutWitnessSize,
 		genWitness: func(t *testing.T) wire.TxWitness {
 
 			witScript, err := input.ReceiverHTLCScript(
@@ -741,7 +741,7 @@ var witnessSizeTests = []witnessSizeTest{
 	},
 	{
 		name:    "accepted htlc timeout confirmed",
-		expSize: input.AcceptedHtlcTimeoutWitnessSize,
+		expSize: input.AcceptedHtlcTimeoutWitnessSizeConfirmed,
 		genWitness: func(t *testing.T) wire.TxWitness {
 			witScript, err := input.ReceiverHTLCScript(
 				testCLTVExpiry, testPubkey, testPubkey,
@@ -768,7 +768,7 @@ var witnessSizeTests = []witnessSizeTest{
 	},
 	{
 		name:    "accepted htlc success",
-		expSize: input.AcceptedHtlcSuccessWitnessSize - 3,
+		expSize: input.AcceptedHtlcSuccessWitnessSize,
 		genWitness: func(t *testing.T) wire.TxWitness {
 			witScript, err := input.ReceiverHTLCScript(
 				testCLTVExpiry, testPubkey, testPubkey,
@@ -798,7 +798,7 @@ var witnessSizeTests = []witnessSizeTest{
 	},
 	{
 		name:    "accepted htlc success confirmed",
-		expSize: input.AcceptedHtlcSuccessWitnessSize,
+		expSize: input.AcceptedHtlcSuccessWitnessSizeConfirmed,
 		genWitness: func(t *testing.T) wire.TxWitness {
 			witScript, err := input.ReceiverHTLCScript(
 				testCLTVExpiry, testPubkey, testPubkey,

sweep/txgenerator_test.go

@@ -15,7 +15,7 @@ var (
 		input.HtlcOfferedRemoteTimeout,
 		input.WitnessKeyHash,
 	}
-	expectedWeight  = int64(1463)
+	expectedWeight  = int64(1460)
 	expectedSummary = "0000000000000000000000000000000000000000000000000000000000000000:10 (CommitmentTimeLock), " +
 		"0000000000000000000000000000000000000000000000000000000000000001:11 (HtlcAcceptedSuccessSecondLevel), " +
 		"0000000000000000000000000000000000000000000000000000000000000002:12 (HtlcOfferedRemoteTimeout), " +