def part2(self):
paymentPreimage = b"\x01" * 32
paymentHash = bitcoin.sha256(paymentPreimage)
# Now we'll add HTLC of 3.5 BTC to Alice's commitment, this should put
# Alice's balance at 1.5 BTC.
#
# Resulting balances:
# Alice: 1.5
# Bob: 9.5
htlc_dict = {
'payment_hash': paymentHash,
'amount_msat': int(3.5 * one_bitcoin_in_msat),
'cltv_expiry': 5,
}
self.alice_channel.add_htlc(htlc_dict)
self.bob_channel.receive_htlc(htlc_dict)
# Add a second HTLC of 1 BTC. This should fail because it will take
# Alice's balance all the way down to her channel reserve, but since
# she is the initiator the additional transaction fee makes her
# balance dip below.
htlc_dict['amount_msat'] = one_bitcoin_in_msat
with self.assertRaises(lnutil.PaymentFailure):
self.alice_channel.add_htlc(htlc_dict)
with self.assertRaises(lnutil.RemoteMisbehaving):
self.bob_channel.receive_htlc(htlc_dict)
def part3(self):
# Add a HTLC of 2 BTC to Alice, and the settle it.
# Resulting balances:
# Alice: 3.0
# Bob: 7.0
paymentPreimage = b"\x01" * 32
paymentHash = bitcoin.sha256(paymentPreimage)
htlc_dict = {
'payment_hash': paymentHash,
'amount_msat': int(2 * one_bitcoin_in_msat),
'cltv_expiry': 5,
'timestamp': 0,
}
alice_idx = self.alice_channel.add_htlc(htlc_dict).htlc_id
bob_idx = self.bob_channel.receive_htlc(htlc_dict).htlc_id
force_state_transition(self.alice_channel, self.bob_channel)
self.check_bals(one_bitcoin_in_msat*3\
- self.alice_channel.pending_local_fee(),
one_bitcoin_in_msat*5)
self.bob_channel.settle_htlc(paymentPreimage, bob_idx)
self.alice_channel.receive_htlc_settle(paymentPreimage, alice_idx)
force_state_transition(self.alice_channel, self.bob_channel)
self.check_bals(one_bitcoin_in_msat*3\
- self.alice_channel.pending_local_fee(),
one_bitcoin_in_msat*7)
# And now let Bob add an HTLC of 1 BTC. This will take Bob's balance
# all the way down to his channel reserve, but since he is not paying
# the fee this is okay.
htlc_dict['amount_msat'] = one_bitcoin_in_msat
self.bob_channel.add_htlc(htlc_dict)
self.alice_channel.receive_htlc(htlc_dict)
force_state_transition(self.alice_channel, self.bob_channel)
self.check_bals(one_bitcoin_in_msat*3\
- self.alice_channel.pending_local_fee(),
one_bitcoin_in_msat*6)
def setUp(self):
super().setUp()
# Create a test channel which will be used for the duration of this
# unittest. The channel will be funded evenly with Alice having 5 BTC,
# and Bob having 5 BTC.
self.alice_channel, self.bob_channel = create_test_channels()
self.paymentPreimage = b"\x01" * 32
paymentHash = bitcoin.sha256(self.paymentPreimage)
self.htlc_dict = {
'payment_hash': paymentHash,
'amount_msat': one_bitcoin_in_msat,
'cltv_expiry': 5,
'timestamp': 0,
}
# First Alice adds the outgoing HTLC to her local channel's state
# update log. Then Alice sends this wire message over to Bob who adds
# this htlc to his remote state update log.
self.aliceHtlcIndex = self.alice_channel.add_htlc(
self.htlc_dict).htlc_id
self.assertNotEqual(
list(
self.alice_channel.hm.htlcs_by_direction(REMOTE, RECEIVED,
1).values()), [])
before = self.bob_channel.balance_minus_outgoing_htlcs(REMOTE)
beforeLocal = self.bob_channel.balance_minus_outgoing_htlcs(LOCAL)
self.bobHtlcIndex = self.bob_channel.receive_htlc(
self.htlc_dict).htlc_id
self.htlc = self.bob_channel.hm.log[REMOTE]['adds'][0]
def test_shachain_produce_consume(self):
seed = bitcoin.sha256(b"shachaintest")
consumer = RevocationStore()
for i in range(10000):
secret = get_per_commitment_secret_from_seed(seed, RevocationStore.START_INDEX - i)
try:
consumer.add_next_entry(secret)
except Exception as e:
raise Exception("iteration " + str(i) + ": " + str(e))
if i % 1000 == 0: self.assertEqual(consumer.serialize(), RevocationStore.from_json_obj(json.loads(json.dumps(consumer.serialize()))).serialize())
def test_part1(self):
# Add an HTLC that will increase Bob's balance. This should succeed,
# since Alice stays above her channel reserve, and Bob increases his
# balance (while still being below his channel reserve).
#
# Resulting balances:
# Alice: 4.5
# Bob: 5.0
paymentPreimage = b"\x01" * 32
paymentHash = bitcoin.sha256(paymentPreimage)
htlc_dict = {
'payment_hash': paymentHash,
'amount_msat': int(.5 * one_bitcoin_in_msat),
'cltv_expiry': 5,
'timestamp': 0,
}
self.alice_channel.add_htlc(htlc_dict)
self.bob_channel.receive_htlc(htlc_dict)
# Force a state transition, making sure this HTLC is considered valid
# even though the channel reserves are not met.
force_state_transition(self.alice_channel, self.bob_channel)
aliceSelfBalance = self.alice_channel.balance(LOCAL)\
- lnchannel.htlcsum(self.alice_channel.hm.htlcs_by_direction(LOCAL, SENT).values())
bobBalance = self.bob_channel.balance(REMOTE)\
- lnchannel.htlcsum(self.alice_channel.hm.htlcs_by_direction(REMOTE, SENT).values())
self.assertEqual(aliceSelfBalance, one_bitcoin_in_msat * 4.5)
self.assertEqual(bobBalance, one_bitcoin_in_msat * 5)
# Now let Bob try to add an HTLC. This should fail, since it will
# decrease his balance, which is already below the channel reserve.
#
# Resulting balances:
# Alice: 4.5
# Bob: 5.0
with self.assertRaises(lnutil.PaymentFailure):
htlc_dict['payment_hash'] = bitcoin.sha256(32 * b'\x02')
self.bob_channel.add_htlc(htlc_dict)
with self.assertRaises(lnutil.RemoteMisbehaving):
self.alice_channel.receive_htlc(htlc_dict)
def prepare_invoice(w2 # receiver
):
amount_sat = 100000
amount_btc = amount_sat / Decimal(COIN)
payment_preimage = os.urandom(32)
RHASH = sha256(payment_preimage)
info = InvoiceInfo(RHASH, amount_sat, RECEIVED, PR_UNPAID)
w2.save_preimage(RHASH, payment_preimage)
w2.save_invoice_info(info)
lnaddr = LnAddr(RHASH,
amount_btc,
tags=[('c', lnutil.MIN_FINAL_CLTV_EXPIRY_FOR_INVOICE),
('d', 'coffee')])
return lnencode(lnaddr, w2.node_keypair.privkey)
def test_AddHTLCNegativeBalance(self):
# the test in lnd doesn't set the fee to zero.
# probably lnd subtracts commitment fee after deciding weather
# an htlc can be added. so we set the fee to zero so that
# the test can work.
self.alice_to_bob_fee_update(0)
force_state_transition(self.alice_channel, self.bob_channel)
self.htlc_dict['payment_hash'] = bitcoin.sha256(32 * b'\x02')
self.alice_channel.add_htlc(self.htlc_dict)
self.htlc_dict['payment_hash'] = bitcoin.sha256(32 * b'\x03')
self.alice_channel.add_htlc(self.htlc_dict)
# now there are three htlcs (one was in setUp)
# Alice now has an available balance of 2 BTC. We'll add a new HTLC of
# value 2 BTC, which should make Alice's balance negative (since she
# has to pay a commitment fee).
new = dict(self.htlc_dict)
new['amount_msat'] *= 2.5
new['payment_hash'] = bitcoin.sha256(32 * b'\x04')
with self.assertRaises(lnutil.PaymentFailure) as cm:
self.alice_channel.add_htlc(new)
self.assertIn('Not enough local balance', cm.exception.args[0])
def test_DustLimit(self):
alice_channel, bob_channel = create_test_channels()
paymentPreimage = b"\x01" * 32
paymentHash = bitcoin.sha256(paymentPreimage)
fee_per_kw = alice_channel.get_next_feerate(LOCAL)
self.assertEqual(fee_per_kw, 6000)
htlcAmt = 500 + lnutil.HTLC_TIMEOUT_WEIGHT * (fee_per_kw // 1000)
self.assertEqual(htlcAmt, 4478)
htlc = {
'payment_hash': paymentHash,
'amount_msat': 1000 * htlcAmt,
'cltv_expiry': 5, # also in create_test_channels
'timestamp': 0,
}
old_values = [
x.value
for x in bob_channel.get_latest_commitment(LOCAL).outputs()
]
aliceHtlcIndex = alice_channel.add_htlc(htlc).htlc_id
bobHtlcIndex = bob_channel.receive_htlc(htlc).htlc_id
force_state_transition(alice_channel, bob_channel)
alice_ctx = alice_channel.get_latest_commitment(LOCAL)
bob_ctx = bob_channel.get_latest_commitment(LOCAL)
new_values = [x.value for x in bob_ctx.outputs()]
self.assertNotEqual(old_values, new_values)
self.assertEqual(len(alice_ctx.outputs()), 3)
self.assertEqual(len(bob_ctx.outputs()), 2)
default_fee = calc_static_fee(0)
self.assertEqual(bob_channel.pending_local_fee(),
default_fee + htlcAmt)
bob_channel.settle_htlc(paymentPreimage, bobHtlcIndex)
alice_channel.receive_htlc_settle(paymentPreimage, aliceHtlcIndex)
force_state_transition(bob_channel, alice_channel)
self.assertEqual(
len(alice_channel.get_next_commitment(LOCAL).outputs()), 2)
self.assertEqual(alice_channel.total_msat(SENT) // 1000, htlcAmt)
def test_concurrent_reversed_payment(self):
self.htlc_dict['payment_hash'] = bitcoin.sha256(32 * b'\x02')
self.htlc_dict['amount_msat'] += 1000
self.bob_channel.add_htlc(self.htlc_dict)
self.alice_channel.receive_htlc(self.htlc_dict)
self.assertEqual(
len(self.alice_channel.get_latest_commitment(LOCAL).outputs()), 2)
self.assertEqual(
len(self.alice_channel.get_next_commitment(LOCAL).outputs()), 3)
self.assertEqual(
len(self.alice_channel.get_latest_commitment(REMOTE).outputs()), 2)
self.assertEqual(
len(self.alice_channel.get_next_commitment(REMOTE).outputs()), 3)
self.alice_channel.receive_new_commitment(
*self.bob_channel.sign_next_commitment())
self.assertEqual(
len(self.alice_channel.get_latest_commitment(LOCAL).outputs()), 3)
self.assertEqual(
len(self.alice_channel.get_next_commitment(LOCAL).outputs()), 3)
self.assertEqual(
len(self.alice_channel.get_latest_commitment(REMOTE).outputs()), 2)
self.assertEqual(
len(self.alice_channel.get_next_commitment(REMOTE).outputs()), 3)
self.alice_channel.revoke_current_commitment()
self.assertEqual(
len(self.alice_channel.get_latest_commitment(LOCAL).outputs()), 3)
self.assertEqual(
len(self.alice_channel.get_next_commitment(LOCAL).outputs()), 3)
self.assertEqual(
len(self.alice_channel.get_latest_commitment(REMOTE).outputs()), 2)
self.assertEqual(
len(self.alice_channel.get_next_commitment(REMOTE).outputs()), 4)
def test_DesyncHTLCs(self):
alice_channel, bob_channel = create_test_channels()
paymentPreimage = b"\x01" * 32
paymentHash = bitcoin.sha256(paymentPreimage)
htlc_dict = {
'payment_hash': paymentHash,
'amount_msat': int(4.1 * one_bitcoin_in_msat),
'cltv_expiry': 5,
'timestamp': 0,
}
alice_idx = alice_channel.add_htlc(htlc_dict).htlc_id
bob_idx = bob_channel.receive_htlc(htlc_dict).htlc_id
force_state_transition(alice_channel, bob_channel)
bob_channel.fail_htlc(bob_idx)
alice_channel.receive_fail_htlc(alice_idx)
# Alice now has gotten all her original balance (5 BTC) back, however,
# adding a new HTLC at this point SHOULD fail, since if she adds the
# HTLC and signs the next state, Bob cannot assume she received the
# FailHTLC, and must assume she doesn't have the necessary balance
# available.
# We try adding an HTLC of value 1 BTC, which should fail because the
# balance is unavailable.
htlc_dict = {
'payment_hash': paymentHash,
'amount_msat': one_bitcoin_in_msat,
'cltv_expiry': 5,
'timestamp': 0,
}
with self.assertRaises(lnutil.PaymentFailure):
alice_channel.add_htlc(htlc_dict)
# Now do a state transition, which will ACK the FailHTLC, making Alice
# able to add the new HTLC.
force_state_transition(alice_channel, bob_channel)
alice_channel.add_htlc(htlc_dict)
def test_commitment_tx_with_all_five_HTLCs_untrimmed_minimum_feerate(self):
to_local_msat = 6988000000
to_remote_msat = 3000000000
local_feerate_per_kw = 0
# base commitment transaction fee = 0
# actual commitment transaction fee = 0
per_commitment_secret = 0x1f1e1d1c1b1a191817161514131211100f0e0d0c0b0a09080706050403020100
per_commitment_point = secret_to_pubkey(per_commitment_secret)
remote_htlcpubkey = remotepubkey
local_htlcpubkey = localpubkey
htlc_cltv_timeout = {}
htlc_payment_preimage = {}
htlc = {}
htlc_cltv_timeout[2] = 502
htlc_payment_preimage[2] = b"\x02" * 32
htlc[2] = make_offered_htlc(local_revocation_pubkey, remote_htlcpubkey, local_htlcpubkey, bitcoin.sha256(htlc_payment_preimage[2]))
htlc_cltv_timeout[3] = 503
htlc_payment_preimage[3] = b"\x03" * 32
htlc[3] = make_offered_htlc(local_revocation_pubkey, remote_htlcpubkey, local_htlcpubkey, bitcoin.sha256(htlc_payment_preimage[3]))
htlc_cltv_timeout[0] = 500
htlc_payment_preimage[0] = b"\x00" * 32
htlc[0] = make_received_htlc(local_revocation_pubkey, remote_htlcpubkey, local_htlcpubkey, bitcoin.sha256(htlc_payment_preimage[0]), htlc_cltv_timeout[0])
htlc_cltv_timeout[1] = 501
htlc_payment_preimage[1] = b"\x01" * 32
htlc[1] = make_received_htlc(local_revocation_pubkey, remote_htlcpubkey, local_htlcpubkey, bitcoin.sha256(htlc_payment_preimage[1]), htlc_cltv_timeout[1])
htlc_cltv_timeout[4] = 504
htlc_payment_preimage[4] = b"\x04" * 32
htlc[4] = make_received_htlc(local_revocation_pubkey, remote_htlcpubkey, local_htlcpubkey, bitcoin.sha256(htlc_payment_preimage[4]), htlc_cltv_timeout[4])
remote_signature = "304402204fd4928835db1ccdfc40f5c78ce9bd65249b16348df81f0c44328dcdefc97d630220194d3869c38bc732dd87d13d2958015e2fc16829e74cd4377f84d215c0b70606"
output_commit_tx = "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"
htlc_obj = {}
for num, msat in [(0, 1000 * 1000),
(2, 2000 * 1000),
(1, 2000 * 1000),
(3, 3000 * 1000),
(4, 4000 * 1000)]:
htlc_obj[num] = UpdateAddHtlc(amount_msat=msat, payment_hash=bitcoin.sha256(htlc_payment_preimage[num]), cltv_expiry=0, htlc_id=None, timestamp=0)
htlcs = [ScriptHtlc(htlc[x], htlc_obj[x]) for x in range(5)]
our_commit_tx = make_commitment(
commitment_number,
local_funding_pubkey, remote_funding_pubkey, remotepubkey,
local_payment_basepoint, remote_payment_basepoint,
local_revocation_pubkey, local_delayedpubkey, local_delay,
funding_tx_id, funding_output_index, funding_amount_satoshi,
to_local_msat, to_remote_msat, local_dust_limit_satoshi,
calc_onchain_fees(len(htlcs), local_feerate_per_kw, True), htlcs=htlcs)
self.sign_and_insert_remote_sig(our_commit_tx, remote_funding_pubkey, remote_signature, local_funding_pubkey, local_funding_privkey)
self.assertEqual(str(our_commit_tx), output_commit_tx)
signature_for_output_remote_htlc = {}
signature_for_output_remote_htlc[0] = "304402206a6e59f18764a5bf8d4fa45eebc591566689441229c918b480fb2af8cc6a4aeb02205248f273be447684b33e3c8d1d85a8e0ca9fa0bae9ae33f0527ada9c162919a6"
signature_for_output_remote_htlc[2] = "3045022100d5275b3619953cb0c3b5aa577f04bc512380e60fa551762ce3d7a1bb7401cff9022037237ab0dac3fe100cde094e82e2bed9ba0ed1bb40154b48e56aa70f259e608b"
signature_for_output_remote_htlc[1] = "304402201b63ec807771baf4fdff523c644080de17f1da478989308ad13a58b51db91d360220568939d38c9ce295adba15665fa68f51d967e8ed14a007b751540a80b325f202"
signature_for_output_remote_htlc[3] = "3045022100daee1808f9861b6c3ecd14f7b707eca02dd6bdfc714ba2f33bc8cdba507bb182022026654bf8863af77d74f51f4e0b62d461a019561bb12acb120d3f7195d148a554"
signature_for_output_remote_htlc[4] = "304402207e0410e45454b0978a623f36a10626ef17b27d9ad44e2760f98cfa3efb37924f0220220bd8acd43ecaa916a80bd4f919c495a2c58982ce7c8625153f8596692a801d"
output_htlc_tx = {}
SUCCESS = True
TIMEOUT = False
output_htlc_tx[0] = (SUCCESS, "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")
output_htlc_tx[2] = (TIMEOUT, "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")
output_htlc_tx[1] = (SUCCESS, "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")
output_htlc_tx[3] = (TIMEOUT, "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")
output_htlc_tx[4] = (SUCCESS, "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")
htlc_output_index = {0: 0, 1: 2, 2: 1, 3: 3, 4: 4}
for i in range(5):
self.assertEqual(output_htlc_tx[i][1], self.htlc_tx(htlc[i], htlc_output_index[i],
htlcs[i].htlc.amount_msat,
htlc_payment_preimage[i],
signature_for_output_remote_htlc[i],
output_htlc_tx[i][0], htlc_cltv_timeout[i] if not output_htlc_tx[i][0] else 0,
local_feerate_per_kw,
our_commit_tx))