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https://github.com/LBRYFoundation/LBRY-Vault.git
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dbceed2647
- Perform json deserializations in wallet_db - use StoredDict class that keeps tracks of its modifications
822 lines
40 KiB
Python
822 lines
40 KiB
Python
# Copyright (C) 2018 The Electrum developers
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# Copyright (C) 2015-2018 The Lightning Network Developers
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#
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# Permission is hereby granted, free of charge, to any person obtaining a copy
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# of this software and associated documentation files (the "Software"), to deal
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# in the Software without restriction, including without limitation the rights
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# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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# copies of the Software, and to permit persons to whom the Software is
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# furnished to do so, subject to the following conditions:
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#
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# The above copyright notice and this permission notice shall be included in
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# all copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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# THE SOFTWARE.
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import unittest
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import os
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import binascii
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from pprint import pformat
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import logging
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from electrum import bitcoin
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from electrum import lnpeer
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from electrum import lnchannel
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from electrum import lnutil
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from electrum import bip32 as bip32_utils
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from electrum.lnutil import SENT, LOCAL, REMOTE, RECEIVED
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from electrum.lnutil import FeeUpdate
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from electrum.ecc import sig_string_from_der_sig
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from electrum.logging import console_stderr_handler
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from electrum.lnchannel import channel_states
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from electrum.json_db import StoredDict
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from . import ElectrumTestCase
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one_bitcoin_in_msat = bitcoin.COIN * 1000
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def create_channel_state(funding_txid, funding_index, funding_sat, is_initiator, local_amount, remote_amount, privkeys, other_pubkeys, seed, cur, nex, other_node_id, l_dust, r_dust, l_csv, r_csv):
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assert local_amount > 0
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assert remote_amount > 0
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channel_id, _ = lnpeer.channel_id_from_funding_tx(funding_txid, funding_index)
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state = {
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"channel_id":channel_id.hex(),
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"short_channel_id":channel_id[:8],
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"funding_outpoint":lnpeer.Outpoint(funding_txid, funding_index),
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"remote_config":lnpeer.RemoteConfig(
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payment_basepoint=other_pubkeys[0],
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multisig_key=other_pubkeys[1],
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htlc_basepoint=other_pubkeys[2],
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delayed_basepoint=other_pubkeys[3],
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revocation_basepoint=other_pubkeys[4],
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to_self_delay=r_csv,
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dust_limit_sat=r_dust,
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max_htlc_value_in_flight_msat=one_bitcoin_in_msat * 5,
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max_accepted_htlcs=5,
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initial_msat=remote_amount,
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reserve_sat=0,
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htlc_minimum_msat=1,
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next_per_commitment_point=nex,
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current_per_commitment_point=cur,
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),
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"local_config":lnpeer.LocalConfig(
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payment_basepoint=privkeys[0],
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multisig_key=privkeys[1],
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htlc_basepoint=privkeys[2],
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delayed_basepoint=privkeys[3],
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revocation_basepoint=privkeys[4],
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to_self_delay=l_csv,
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dust_limit_sat=l_dust,
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max_htlc_value_in_flight_msat=one_bitcoin_in_msat * 5,
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max_accepted_htlcs=5,
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initial_msat=local_amount,
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reserve_sat=0,
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per_commitment_secret_seed=seed,
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funding_locked_received=True,
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was_announced=False,
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current_commitment_signature=None,
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current_htlc_signatures=None,
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),
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"constraints":lnpeer.ChannelConstraints(
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capacity=funding_sat,
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is_initiator=is_initiator,
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funding_txn_minimum_depth=3,
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),
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"node_id":other_node_id.hex(),
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'onion_keys': {},
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'data_loss_protect_remote_pcp': {},
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'state': 'PREOPENING',
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'log': {},
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'revocation_store': {},
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}
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return StoredDict(state, None, [])
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def bip32(sequence):
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node = bip32_utils.BIP32Node.from_rootseed(b"9dk", xtype='standard').subkey_at_private_derivation(sequence)
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k = node.eckey.get_secret_bytes()
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assert len(k) == 32
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assert type(k) is bytes
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return k
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def create_test_channels(feerate=6000, local=None, remote=None):
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funding_txid = binascii.hexlify(b"\x01"*32).decode("ascii")
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funding_index = 0
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funding_sat = ((local + remote) // 1000) if local is not None and remote is not None else (bitcoin.COIN * 10)
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local_amount = local if local is not None else (funding_sat * 1000 // 2)
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remote_amount = remote if remote is not None else (funding_sat * 1000 // 2)
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alice_raw = [ bip32("m/" + str(i)) for i in range(5) ]
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bob_raw = [ bip32("m/" + str(i)) for i in range(5,11) ]
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alice_privkeys = [lnutil.Keypair(lnutil.privkey_to_pubkey(x), x) for x in alice_raw]
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bob_privkeys = [lnutil.Keypair(lnutil.privkey_to_pubkey(x), x) for x in bob_raw]
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alice_pubkeys = [lnutil.OnlyPubkeyKeypair(x.pubkey) for x in alice_privkeys]
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bob_pubkeys = [lnutil.OnlyPubkeyKeypair(x.pubkey) for x in bob_privkeys]
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alice_seed = b"\x01" * 32
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bob_seed = b"\x02" * 32
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alice_first = lnutil.secret_to_pubkey(int.from_bytes(lnutil.get_per_commitment_secret_from_seed(alice_seed, lnutil.RevocationStore.START_INDEX), "big"))
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bob_first = lnutil.secret_to_pubkey(int.from_bytes(lnutil.get_per_commitment_secret_from_seed(bob_seed, lnutil.RevocationStore.START_INDEX), "big"))
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alice, bob = (
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lnchannel.Channel(
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create_channel_state(funding_txid, funding_index, funding_sat, True, local_amount, remote_amount, alice_privkeys, bob_pubkeys, alice_seed, None, bob_first, b"\x02"*33, l_dust=200, r_dust=1300, l_csv=5, r_csv=4),
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name="alice",
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initial_feerate=feerate),
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lnchannel.Channel(
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create_channel_state(funding_txid, funding_index, funding_sat, False, remote_amount, local_amount, bob_privkeys, alice_pubkeys, bob_seed, None, alice_first, b"\x01"*33, l_dust=1300, r_dust=200, l_csv=4, r_csv=5),
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name="bob",
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initial_feerate=feerate)
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)
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alice.hm.log[LOCAL]['ctn'] = 0
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bob.hm.log[LOCAL]['ctn'] = 0
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alice._state = channel_states.OPEN
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bob._state = channel_states.OPEN
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a_out = alice.get_latest_commitment(LOCAL).outputs()
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b_out = bob.get_next_commitment(REMOTE).outputs()
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assert a_out == b_out, "\n" + pformat((a_out, b_out))
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sig_from_bob, a_htlc_sigs = bob.sign_next_commitment()
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sig_from_alice, b_htlc_sigs = alice.sign_next_commitment()
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assert len(a_htlc_sigs) == 0
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assert len(b_htlc_sigs) == 0
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alice.config[LOCAL].current_commitment_signature = sig_from_bob
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bob.config[LOCAL].current_commitment_signature = sig_from_alice
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alice_second = lnutil.secret_to_pubkey(int.from_bytes(lnutil.get_per_commitment_secret_from_seed(alice_seed, lnutil.RevocationStore.START_INDEX - 1), "big"))
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bob_second = lnutil.secret_to_pubkey(int.from_bytes(lnutil.get_per_commitment_secret_from_seed(bob_seed, lnutil.RevocationStore.START_INDEX - 1), "big"))
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alice.config[REMOTE].next_per_commitment_point = bob_second
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alice.config[REMOTE].current_per_commitment_point = bob_first
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bob.config[REMOTE].next_per_commitment_point = alice_second
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bob.config[REMOTE].current_per_commitment_point = alice_first
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alice.hm.channel_open_finished()
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bob.hm.channel_open_finished()
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return alice, bob
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class TestFee(ElectrumTestCase):
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"""
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test
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https://github.com/lightningnetwork/lightning-rfc/blob/e0c436bd7a3ed6a028e1cb472908224658a14eca/03-transactions.md#requirements-2
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"""
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def test_fee(self):
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alice_channel, bob_channel = create_test_channels(253, 10000000000, 5000000000)
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self.assertIn(9999817, [x.value for x in alice_channel.get_latest_commitment(LOCAL).outputs()])
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class TestChannel(ElectrumTestCase):
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maxDiff = 999
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def assertOutputExistsByValue(self, tx, amt_sat):
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for o in tx.outputs():
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if o.value == amt_sat:
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break
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else:
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self.assertFalse()
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@classmethod
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def setUpClass(cls):
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super().setUpClass()
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console_stderr_handler.setLevel(logging.DEBUG)
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def setUp(self):
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super().setUp()
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# Create a test channel which will be used for the duration of this
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# unittest. The channel will be funded evenly with Alice having 5 BTC,
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# and Bob having 5 BTC.
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self.alice_channel, self.bob_channel = create_test_channels()
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self.paymentPreimage = b"\x01" * 32
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paymentHash = bitcoin.sha256(self.paymentPreimage)
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self.htlc_dict = {
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'payment_hash' : paymentHash,
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'amount_msat' : one_bitcoin_in_msat,
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'cltv_expiry' : 5,
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'timestamp' : 0,
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}
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# First Alice adds the outgoing HTLC to her local channel's state
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# update log. Then Alice sends this wire message over to Bob who adds
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# this htlc to his remote state update log.
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self.aliceHtlcIndex = self.alice_channel.add_htlc(self.htlc_dict).htlc_id
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self.assertNotEqual(list(self.alice_channel.hm.htlcs_by_direction(REMOTE, RECEIVED, 1).values()), [])
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before = self.bob_channel.balance_minus_outgoing_htlcs(REMOTE)
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beforeLocal = self.bob_channel.balance_minus_outgoing_htlcs(LOCAL)
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self.bobHtlcIndex = self.bob_channel.receive_htlc(self.htlc_dict).htlc_id
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self.htlc = self.bob_channel.hm.log[REMOTE]['adds'][0]
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def test_concurrent_reversed_payment(self):
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self.htlc_dict['payment_hash'] = bitcoin.sha256(32 * b'\x02')
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self.htlc_dict['amount_msat'] += 1000
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self.bob_channel.add_htlc(self.htlc_dict)
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self.alice_channel.receive_htlc(self.htlc_dict)
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self.assertEqual(len(self.alice_channel.get_latest_commitment(LOCAL).outputs()), 2)
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self.assertEqual(len(self.alice_channel.get_next_commitment(LOCAL).outputs()), 3)
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self.assertEqual(len(self.alice_channel.get_latest_commitment(REMOTE).outputs()), 2)
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self.assertEqual(len(self.alice_channel.get_next_commitment(REMOTE).outputs()), 3)
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self.alice_channel.receive_new_commitment(*self.bob_channel.sign_next_commitment())
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self.assertEqual(len(self.alice_channel.get_latest_commitment(LOCAL).outputs()), 3)
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self.assertEqual(len(self.alice_channel.get_next_commitment(LOCAL).outputs()), 3)
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self.assertEqual(len(self.alice_channel.get_latest_commitment(REMOTE).outputs()), 2)
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self.assertEqual(len(self.alice_channel.get_next_commitment(REMOTE).outputs()), 3)
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self.alice_channel.revoke_current_commitment()
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self.assertEqual(len(self.alice_channel.get_latest_commitment(LOCAL).outputs()), 3)
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self.assertEqual(len(self.alice_channel.get_next_commitment(LOCAL).outputs()), 3)
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self.assertEqual(len(self.alice_channel.get_latest_commitment(REMOTE).outputs()), 2)
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self.assertEqual(len(self.alice_channel.get_next_commitment(REMOTE).outputs()), 4)
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def test_SimpleAddSettleWorkflow(self):
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alice_channel, bob_channel = self.alice_channel, self.bob_channel
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htlc = self.htlc
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alice_out = alice_channel.get_latest_commitment(LOCAL).outputs()
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short_idx, = [idx for idx, x in enumerate(alice_out) if len(x.address) == 42]
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long_idx, = [idx for idx, x in enumerate(alice_out) if len(x.address) == 62]
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self.assertLess(alice_out[long_idx].value, 5 * 10**8, alice_out)
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self.assertEqual(alice_out[short_idx].value, 5 * 10**8, alice_out)
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alice_out = alice_channel.get_latest_commitment(REMOTE).outputs()
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short_idx, = [idx for idx, x in enumerate(alice_out) if len(x.address) == 42]
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long_idx, = [idx for idx, x in enumerate(alice_out) if len(x.address) == 62]
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self.assertLess(alice_out[short_idx].value, 5 * 10**8)
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self.assertEqual(alice_out[long_idx].value, 5 * 10**8)
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self.assertTrue(alice_channel.signature_fits(alice_channel.get_latest_commitment(LOCAL)))
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self.assertNotEqual(alice_channel.included_htlcs(REMOTE, RECEIVED, 1), [])
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self.assertEqual(alice_channel.included_htlcs(REMOTE, RECEIVED, 0), [])
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self.assertEqual(alice_channel.included_htlcs(REMOTE, RECEIVED, 1), [htlc])
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self.assertEqual(bob_channel.included_htlcs(REMOTE, SENT, 0), [])
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self.assertEqual(bob_channel.included_htlcs(REMOTE, SENT, 1), [])
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self.assertEqual(alice_channel.included_htlcs(REMOTE, SENT, 0), [])
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self.assertEqual(alice_channel.included_htlcs(REMOTE, SENT, 1), [])
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self.assertEqual(bob_channel.included_htlcs(REMOTE, RECEIVED, 0), [])
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self.assertEqual(bob_channel.included_htlcs(REMOTE, RECEIVED, 1), [])
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from electrum.lnutil import extract_ctn_from_tx_and_chan
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tx0 = str(alice_channel.force_close_tx())
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self.assertEqual(alice_channel.get_oldest_unrevoked_ctn(LOCAL), 0)
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self.assertEqual(extract_ctn_from_tx_and_chan(alice_channel.force_close_tx(), alice_channel), 0)
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self.assertTrue(alice_channel.signature_fits(alice_channel.get_latest_commitment(LOCAL)))
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# Next alice commits this change by sending a signature message. Since
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# we expect the messages to be ordered, Bob will receive the HTLC we
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# just sent before he receives this signature, so the signature will
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# cover the HTLC.
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aliceSig, aliceHtlcSigs = alice_channel.sign_next_commitment()
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self.assertEqual(len(aliceHtlcSigs), 1, "alice should generate one htlc signature")
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self.assertTrue(alice_channel.signature_fits(alice_channel.get_latest_commitment(LOCAL)))
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self.assertEqual(next(iter(alice_channel.hm.get_htlcs_in_next_ctx(REMOTE)))[0], RECEIVED)
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self.assertEqual(alice_channel.hm.get_htlcs_in_next_ctx(REMOTE), bob_channel.hm.get_htlcs_in_next_ctx(LOCAL))
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self.assertEqual(alice_channel.get_latest_commitment(REMOTE).outputs(), bob_channel.get_next_commitment(LOCAL).outputs())
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# Bob receives this signature message, and checks that this covers the
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# state he has in his remote log. This includes the HTLC just sent
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# from Alice.
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self.assertTrue(bob_channel.signature_fits(bob_channel.get_latest_commitment(LOCAL)))
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bob_channel.receive_new_commitment(aliceSig, aliceHtlcSigs)
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self.assertTrue(bob_channel.signature_fits(bob_channel.get_latest_commitment(LOCAL)))
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self.assertEqual(bob_channel.get_oldest_unrevoked_ctn(REMOTE), 0)
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self.assertEqual(bob_channel.included_htlcs(LOCAL, RECEIVED, 1), [htlc])#
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self.assertEqual(alice_channel.included_htlcs(REMOTE, RECEIVED, 0), [])
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self.assertEqual(alice_channel.included_htlcs(REMOTE, RECEIVED, 1), [htlc])
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self.assertEqual(alice_channel.included_htlcs(REMOTE, SENT, 0), [])
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self.assertEqual(alice_channel.included_htlcs(REMOTE, SENT, 1), [])
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self.assertEqual(bob_channel.included_htlcs(REMOTE, RECEIVED, 0), [])
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self.assertEqual(bob_channel.included_htlcs(REMOTE, RECEIVED, 1), [])
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# Bob revokes his prior commitment given to him by Alice, since he now
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# has a valid signature for a newer commitment.
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bobRevocation, _ = bob_channel.revoke_current_commitment()
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self.assertTrue(bob_channel.signature_fits(bob_channel.get_latest_commitment(LOCAL)))
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# Bob finally sends a signature for Alice's commitment transaction.
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# This signature will cover the HTLC, since Bob will first send the
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# revocation just created. The revocation also acks every received
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# HTLC up to the point where Alice sent her signature.
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bobSig, bobHtlcSigs = bob_channel.sign_next_commitment()
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self.assertTrue(bob_channel.signature_fits(bob_channel.get_latest_commitment(LOCAL)))
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self.assertEqual(len(bobHtlcSigs), 1)
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self.assertTrue(alice_channel.signature_fits(alice_channel.get_latest_commitment(LOCAL)))
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# so far: Alice added htlc, Alice signed.
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self.assertEqual(len(alice_channel.get_latest_commitment(LOCAL).outputs()), 2)
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self.assertEqual(len(alice_channel.get_next_commitment(LOCAL).outputs()), 2)
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self.assertEqual(len(alice_channel.get_oldest_unrevoked_commitment(REMOTE).outputs()), 2)
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self.assertEqual(len(alice_channel.get_latest_commitment(REMOTE).outputs()), 3)
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# Alice then processes this revocation, sending her own revocation for
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# her prior commitment transaction. Alice shouldn't have any HTLCs to
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# forward since she's sending an outgoing HTLC.
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alice_channel.receive_revocation(bobRevocation)
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self.assertTrue(alice_channel.signature_fits(alice_channel.get_latest_commitment(LOCAL)))
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self.assertEqual(len(alice_channel.get_latest_commitment(LOCAL).outputs()), 2)
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self.assertEqual(len(alice_channel.get_latest_commitment(REMOTE).outputs()), 3)
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self.assertEqual(len(alice_channel.force_close_tx().outputs()), 2)
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self.assertEqual(len(alice_channel.hm.log[LOCAL]['adds']), 1)
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self.assertEqual(alice_channel.get_next_commitment(LOCAL).outputs(),
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bob_channel.get_latest_commitment(REMOTE).outputs())
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# Alice then processes bob's signature, and since she just received
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# the revocation, she expect this signature to cover everything up to
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# the point where she sent her signature, including the HTLC.
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alice_channel.receive_new_commitment(bobSig, bobHtlcSigs)
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self.assertEqual(len(alice_channel.get_latest_commitment(REMOTE).outputs()), 3)
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self.assertEqual(len(alice_channel.force_close_tx().outputs()), 3)
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self.assertEqual(len(alice_channel.hm.log[LOCAL]['adds']), 1)
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tx1 = str(alice_channel.force_close_tx())
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self.assertNotEqual(tx0, tx1)
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# Alice then generates a revocation for bob.
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aliceRevocation, _ = alice_channel.revoke_current_commitment()
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tx2 = str(alice_channel.force_close_tx())
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# since alice already has the signature for the next one, it doesn't change her force close tx (it was already the newer one)
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self.assertEqual(tx1, tx2)
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# Finally Bob processes Alice's revocation, at this point the new HTLC
|
|
# is fully locked in within both commitment transactions. Bob should
|
|
# also be able to forward an HTLC now that the HTLC has been locked
|
|
# into both commitment transactions.
|
|
self.assertTrue(bob_channel.signature_fits(bob_channel.get_latest_commitment(LOCAL)))
|
|
bob_channel.receive_revocation(aliceRevocation)
|
|
|
|
# At this point, both sides should have the proper number of satoshis
|
|
# sent, and commitment height updated within their local channel
|
|
# state.
|
|
aliceSent = 0
|
|
bobSent = 0
|
|
|
|
self.assertEqual(alice_channel.total_msat(SENT), aliceSent, "alice has incorrect milli-satoshis sent")
|
|
self.assertEqual(alice_channel.total_msat(RECEIVED), bobSent, "alice has incorrect milli-satoshis received")
|
|
self.assertEqual(bob_channel.total_msat(SENT), bobSent, "bob has incorrect milli-satoshis sent")
|
|
self.assertEqual(bob_channel.total_msat(RECEIVED), aliceSent, "bob has incorrect milli-satoshis received")
|
|
self.assertEqual(bob_channel.get_oldest_unrevoked_ctn(LOCAL), 1, "bob has incorrect commitment height")
|
|
self.assertEqual(alice_channel.get_oldest_unrevoked_ctn(LOCAL), 1, "alice has incorrect commitment height")
|
|
|
|
# Both commitment transactions should have three outputs, and one of
|
|
# them should be exactly the amount of the HTLC.
|
|
alice_ctx = alice_channel.get_next_commitment(LOCAL)
|
|
bob_ctx = bob_channel.get_next_commitment(LOCAL)
|
|
self.assertEqual(len(alice_ctx.outputs()), 3, "alice should have three commitment outputs, instead have %s"% len(alice_ctx.outputs()))
|
|
self.assertEqual(len(bob_ctx.outputs()), 3, "bob should have three commitment outputs, instead have %s"% len(bob_ctx.outputs()))
|
|
self.assertOutputExistsByValue(alice_ctx, htlc.amount_msat // 1000)
|
|
self.assertOutputExistsByValue(bob_ctx, htlc.amount_msat // 1000)
|
|
|
|
# Now we'll repeat a similar exchange, this time with Bob settling the
|
|
# HTLC once he learns of the preimage.
|
|
preimage = self.paymentPreimage
|
|
bob_channel.settle_htlc(preimage, self.bobHtlcIndex)
|
|
|
|
alice_channel.receive_htlc_settle(preimage, self.aliceHtlcIndex)
|
|
|
|
tx3 = str(alice_channel.force_close_tx())
|
|
# just settling a htlc does not change her force close tx
|
|
self.assertEqual(tx2, tx3)
|
|
|
|
bobSig2, bobHtlcSigs2 = bob_channel.sign_next_commitment()
|
|
self.assertEqual(len(bobHtlcSigs2), 0)
|
|
|
|
self.assertEqual(list(alice_channel.hm.htlcs_by_direction(REMOTE, RECEIVED).values()), [htlc])
|
|
self.assertEqual(alice_channel.included_htlcs(REMOTE, RECEIVED, alice_channel.get_oldest_unrevoked_ctn(REMOTE)), [htlc])
|
|
|
|
self.assertEqual(alice_channel.included_htlcs(REMOTE, RECEIVED, 1), [htlc])
|
|
self.assertEqual(alice_channel.included_htlcs(REMOTE, RECEIVED, 2), [htlc])
|
|
|
|
self.assertEqual(bob_channel.included_htlcs(REMOTE, SENT, 1), [htlc])
|
|
self.assertEqual(bob_channel.included_htlcs(REMOTE, SENT, 2), [])
|
|
|
|
self.assertEqual(alice_channel.included_htlcs(REMOTE, SENT, 1), [])
|
|
self.assertEqual(alice_channel.included_htlcs(REMOTE, SENT, 2), [])
|
|
|
|
self.assertEqual(bob_channel.included_htlcs(REMOTE, RECEIVED, 1), [])
|
|
self.assertEqual(bob_channel.included_htlcs(REMOTE, RECEIVED, 2), [])
|
|
|
|
alice_ctx_bob_version = bob_channel.get_latest_commitment(REMOTE).outputs()
|
|
alice_ctx_alice_version = alice_channel.get_next_commitment(LOCAL).outputs()
|
|
self.assertEqual(alice_ctx_alice_version, alice_ctx_bob_version)
|
|
|
|
alice_channel.receive_new_commitment(bobSig2, bobHtlcSigs2)
|
|
|
|
tx4 = str(alice_channel.force_close_tx())
|
|
self.assertNotEqual(tx3, tx4)
|
|
|
|
self.assertEqual(alice_channel.balance(LOCAL), 500000000000)
|
|
self.assertEqual(1, alice_channel.get_oldest_unrevoked_ctn(LOCAL))
|
|
self.assertEqual(len(alice_channel.included_htlcs(LOCAL, RECEIVED, ctn=2)), 0)
|
|
aliceRevocation2, _ = alice_channel.revoke_current_commitment()
|
|
aliceSig2, aliceHtlcSigs2 = alice_channel.sign_next_commitment()
|
|
self.assertEqual(aliceHtlcSigs2, [], "alice should generate no htlc signatures")
|
|
self.assertEqual(len(bob_channel.get_latest_commitment(LOCAL).outputs()), 3)
|
|
bob_channel.receive_revocation(aliceRevocation2)
|
|
|
|
bob_channel.receive_new_commitment(aliceSig2, aliceHtlcSigs2)
|
|
|
|
bobRevocation2, (received, sent) = bob_channel.revoke_current_commitment()
|
|
self.assertEqual(one_bitcoin_in_msat, received)
|
|
alice_channel.receive_revocation(bobRevocation2)
|
|
|
|
# At this point, Bob should have 6 BTC settled, with Alice still having
|
|
# 4 BTC. Alice's channel should show 1 BTC sent and Bob's channel
|
|
# should show 1 BTC received. They should also be at commitment height
|
|
# two, with the revocation window extended by 1 (5).
|
|
mSatTransferred = one_bitcoin_in_msat
|
|
self.assertEqual(alice_channel.total_msat(SENT), mSatTransferred, "alice satoshis sent incorrect")
|
|
self.assertEqual(alice_channel.total_msat(RECEIVED), 0, "alice satoshis received incorrect")
|
|
self.assertEqual(bob_channel.total_msat(RECEIVED), mSatTransferred, "bob satoshis received incorrect")
|
|
self.assertEqual(bob_channel.total_msat(SENT), 0, "bob satoshis sent incorrect")
|
|
self.assertEqual(bob_channel.get_latest_ctn(LOCAL), 2, "bob has incorrect commitment height")
|
|
self.assertEqual(alice_channel.get_latest_ctn(LOCAL), 2, "alice has incorrect commitment height")
|
|
|
|
alice_channel.update_fee(100000, True)
|
|
alice_outputs = alice_channel.get_next_commitment(REMOTE).outputs()
|
|
old_outputs = bob_channel.get_next_commitment(LOCAL).outputs()
|
|
bob_channel.update_fee(100000, False)
|
|
new_outputs = bob_channel.get_next_commitment(LOCAL).outputs()
|
|
self.assertNotEqual(old_outputs, new_outputs)
|
|
self.assertEqual(alice_outputs, new_outputs)
|
|
|
|
tx5 = str(alice_channel.force_close_tx())
|
|
# sending a fee update does not change her force close tx
|
|
self.assertEqual(tx4, tx5)
|
|
|
|
force_state_transition(alice_channel, bob_channel)
|
|
|
|
tx6 = str(alice_channel.force_close_tx())
|
|
self.assertNotEqual(tx5, tx6)
|
|
|
|
self.htlc_dict['amount_msat'] *= 5
|
|
bob_index = bob_channel.add_htlc(self.htlc_dict).htlc_id
|
|
alice_index = alice_channel.receive_htlc(self.htlc_dict).htlc_id
|
|
|
|
force_state_transition(bob_channel, alice_channel)
|
|
|
|
alice_channel.settle_htlc(self.paymentPreimage, alice_index)
|
|
bob_channel.receive_htlc_settle(self.paymentPreimage, bob_index)
|
|
|
|
force_state_transition(alice_channel, bob_channel)
|
|
self.assertEqual(alice_channel.total_msat(SENT), one_bitcoin_in_msat, "alice satoshis sent incorrect")
|
|
self.assertEqual(alice_channel.total_msat(RECEIVED), 5 * one_bitcoin_in_msat, "alice satoshis received incorrect")
|
|
self.assertEqual(bob_channel.total_msat(RECEIVED), one_bitcoin_in_msat, "bob satoshis received incorrect")
|
|
self.assertEqual(bob_channel.total_msat(SENT), 5 * one_bitcoin_in_msat, "bob satoshis sent incorrect")
|
|
|
|
|
|
def alice_to_bob_fee_update(self, fee=111):
|
|
aoldctx = self.alice_channel.get_next_commitment(REMOTE).outputs()
|
|
self.alice_channel.update_fee(fee, True)
|
|
anewctx = self.alice_channel.get_next_commitment(REMOTE).outputs()
|
|
self.assertNotEqual(aoldctx, anewctx)
|
|
boldctx = self.bob_channel.get_next_commitment(LOCAL).outputs()
|
|
self.bob_channel.update_fee(fee, False)
|
|
bnewctx = self.bob_channel.get_next_commitment(LOCAL).outputs()
|
|
self.assertNotEqual(boldctx, bnewctx)
|
|
self.assertEqual(anewctx, bnewctx)
|
|
return fee
|
|
|
|
def test_UpdateFeeSenderCommits(self):
|
|
alice_channel, bob_channel = self.alice_channel, self.bob_channel
|
|
|
|
old_feerate = alice_channel.get_next_feerate(LOCAL)
|
|
|
|
fee = self.alice_to_bob_fee_update()
|
|
self.assertEqual(alice_channel.get_next_feerate(LOCAL), old_feerate)
|
|
|
|
alice_sig, alice_htlc_sigs = alice_channel.sign_next_commitment()
|
|
#self.assertEqual(alice_channel.get_next_feerate(LOCAL), old_feerate)
|
|
|
|
bob_channel.receive_new_commitment(alice_sig, alice_htlc_sigs)
|
|
|
|
self.assertNotEqual(fee, bob_channel.get_oldest_unrevoked_feerate(LOCAL))
|
|
self.assertEqual(fee, bob_channel.get_latest_feerate(LOCAL))
|
|
rev, _ = bob_channel.revoke_current_commitment()
|
|
self.assertEqual(fee, bob_channel.get_oldest_unrevoked_feerate(LOCAL))
|
|
|
|
alice_channel.receive_revocation(rev)
|
|
|
|
|
|
bob_sig, bob_htlc_sigs = bob_channel.sign_next_commitment()
|
|
alice_channel.receive_new_commitment(bob_sig, bob_htlc_sigs)
|
|
|
|
self.assertNotEqual(fee, alice_channel.get_oldest_unrevoked_feerate(LOCAL))
|
|
self.assertEqual(fee, alice_channel.get_latest_feerate(LOCAL))
|
|
rev, _ = alice_channel.revoke_current_commitment()
|
|
self.assertEqual(fee, alice_channel.get_oldest_unrevoked_feerate(LOCAL))
|
|
|
|
bob_channel.receive_revocation(rev)
|
|
self.assertEqual(fee, bob_channel.get_oldest_unrevoked_feerate(LOCAL))
|
|
self.assertEqual(fee, bob_channel.get_latest_feerate(LOCAL))
|
|
|
|
|
|
def test_UpdateFeeReceiverCommits(self):
|
|
fee = self.alice_to_bob_fee_update()
|
|
|
|
alice_channel, bob_channel = self.alice_channel, self.bob_channel
|
|
|
|
bob_sig, bob_htlc_sigs = bob_channel.sign_next_commitment()
|
|
alice_channel.receive_new_commitment(bob_sig, bob_htlc_sigs)
|
|
|
|
alice_revocation, _ = alice_channel.revoke_current_commitment()
|
|
bob_channel.receive_revocation(alice_revocation)
|
|
alice_sig, alice_htlc_sigs = alice_channel.sign_next_commitment()
|
|
bob_channel.receive_new_commitment(alice_sig, alice_htlc_sigs)
|
|
|
|
self.assertNotEqual(fee, bob_channel.get_oldest_unrevoked_feerate(LOCAL))
|
|
self.assertEqual(fee, bob_channel.get_latest_feerate(LOCAL))
|
|
bob_revocation, _ = bob_channel.revoke_current_commitment()
|
|
self.assertEqual(fee, bob_channel.get_oldest_unrevoked_feerate(LOCAL))
|
|
|
|
bob_sig, bob_htlc_sigs = bob_channel.sign_next_commitment()
|
|
alice_channel.receive_revocation(bob_revocation)
|
|
alice_channel.receive_new_commitment(bob_sig, bob_htlc_sigs)
|
|
|
|
self.assertNotEqual(fee, alice_channel.get_oldest_unrevoked_feerate(LOCAL))
|
|
self.assertEqual(fee, alice_channel.get_latest_feerate(LOCAL))
|
|
alice_revocation, _ = alice_channel.revoke_current_commitment()
|
|
self.assertEqual(fee, alice_channel.get_oldest_unrevoked_feerate(LOCAL))
|
|
|
|
bob_channel.receive_revocation(alice_revocation)
|
|
self.assertEqual(fee, bob_channel.get_oldest_unrevoked_feerate(LOCAL))
|
|
self.assertEqual(fee, bob_channel.get_latest_feerate(LOCAL))
|
|
|
|
@unittest.skip("broken probably because we havn't implemented detecting when we come out of a situation where we violate reserve")
|
|
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])
|
|
|
|
|
|
class TestAvailableToSpend(ElectrumTestCase):
|
|
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)
|
|
|
|
class TestChanReserve(ElectrumTestCase):
|
|
def setUp(self):
|
|
alice_channel, bob_channel = create_test_channels()
|
|
alice_min_reserve = int(.5 * one_bitcoin_in_msat // 1000)
|
|
# We set Bob's channel reserve to a value that is larger than
|
|
# his current balance in the channel. This will ensure that
|
|
# after a channel is first opened, Bob can still receive HTLCs
|
|
# even though his balance is less than his channel reserve.
|
|
bob_min_reserve = 6 * one_bitcoin_in_msat // 1000
|
|
# bob min reserve was decided by alice, but applies to bob
|
|
|
|
alice_channel.config[LOCAL].reserve_sat = bob_min_reserve
|
|
alice_channel.config[REMOTE].reserve_sat = alice_min_reserve
|
|
|
|
bob_channel.config[LOCAL].reserve_sat = alice_min_reserve
|
|
bob_channel.config[REMOTE].reserve_sat = bob_min_reserve
|
|
|
|
self.alice_channel = alice_channel
|
|
self.bob_channel = bob_channel
|
|
|
|
@unittest.skip("broken probably because we havn't implemented detecting when we come out of a situation where we violate reserve")
|
|
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 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)
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|
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 check_bals(self, amt1, amt2):
|
|
self.assertEqual(self.alice_channel.available_to_spend(LOCAL), amt1)
|
|
self.assertEqual(self.bob_channel.available_to_spend(REMOTE), amt1)
|
|
self.assertEqual(self.alice_channel.available_to_spend(REMOTE), amt2)
|
|
self.assertEqual(self.bob_channel.available_to_spend(LOCAL), amt2)
|
|
|
|
class TestDust(ElectrumTestCase):
|
|
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 force_state_transition(chanA, chanB):
|
|
chanB.receive_new_commitment(*chanA.sign_next_commitment())
|
|
rev, _ = chanB.revoke_current_commitment()
|
|
bob_sig, bob_htlc_sigs = chanB.sign_next_commitment()
|
|
chanA.receive_revocation(rev)
|
|
chanA.receive_new_commitment(bob_sig, bob_htlc_sigs)
|
|
chanB.receive_revocation(chanA.revoke_current_commitment()[0])
|
|
|
|
# calcStaticFee calculates appropriate fees for commitment transactions. This
|
|
# function provides a simple way to allow test balance assertions to take fee
|
|
# calculations into account.
|
|
def calc_static_fee(numHTLCs):
|
|
commitWeight = 724
|
|
htlcWeight = 172
|
|
feePerKw = 24//4 * 1000
|
|
return feePerKw * (commitWeight + htlcWeight*numHTLCs) // 1000
|