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lnhtlc: cleanup and save settled htlcs

master
Janus 7 years ago committed by ThomasV
parent
6f5209ef85
commit
02eca03486
2 changed files with 104 additions and 101 deletions
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  1. 177
      electrum/lnhtlc.py
  2. 28
      electrum/tests/test_lnhtlc.py

177
electrum/lnhtlc.py
Unescape View File

@ -2,6 +2,7 @@
from collections import namedtuple from collections import namedtuple
import binascii import binascii
import json import json
from enum import IntFlag
from .util import bfh, PrintError, bh2u from .util import bfh, PrintError, bh2u
from .bitcoin import Hash from .bitcoin import Hash
@ -21,9 +22,22 @@ from .transaction import Transaction
SettleHtlc = namedtuple("SettleHtlc", ["htlc_id"]) SettleHtlc = namedtuple("SettleHtlc", ["htlc_id"])
RevokeAndAck = namedtuple("RevokeAndAck", ["per_commitment_secret", "next_per_commitment_point"]) RevokeAndAck = namedtuple("RevokeAndAck", ["per_commitment_secret", "next_per_commitment_point"])
FUNDEE_SIGNED = 1 class FeeUpdateProgress(IntFlag):
FUNDEE_ACKED = 2 FUNDEE_SIGNED = 1
FUNDER_SIGNED = 4 FUNDEE_ACKED = 2
FUNDER_SIGNED = 4
class HTLCOwner(IntFlag):
LOCAL = 1
REMOTE = -LOCAL
SENT = LOCAL
RECEIVED = REMOTE
SENT = HTLCOwner.SENT
RECEIVED = HTLCOwner.RECEIVED
LOCAL = HTLCOwner.LOCAL
REMOTE = HTLCOwner.REMOTE
class FeeUpdate: class FeeUpdate:
def __init__(self, rate): def __init__(self, rate):
@ -37,13 +51,14 @@ class UpdateAddHtlc:
self.cltv_expiry = cltv_expiry self.cltv_expiry = cltv_expiry
# the height the htlc was locked in at, or None # the height the htlc was locked in at, or None
self.r_locked_in = None self.locked_in = {LOCAL: None, REMOTE: None}
self.l_locked_in = None
self.settled = {LOCAL: None, REMOTE: None}
self.htlc_id = None self.htlc_id = None
def as_tuple(self): def as_tuple(self):
return (self.htlc_id, self.amount_msat, self.payment_hash, self.cltv_expiry, self.r_locked_in, self.l_locked_in) return (self.htlc_id, self.amount_msat, self.payment_hash, self.cltv_expiry, self.locked_in[REMOTE], self.locked_in[LOCAL], self.settled)
def __hash__(self): def __hash__(self):
return hash(self.as_tuple()) return hash(self.as_tuple())
@ -77,7 +92,7 @@ class HTLCStateMachine(PrintError):
@property @property
def pending_remote_feerate(self): def pending_remote_feerate(self):
if self.pending_fee is not None: if self.pending_fee is not None:
if self.constraints.is_initiator or (self.pending_fee.progress & FUNDEE_ACKED): if self.constraints.is_initiator or (self.pending_fee.progress & FeeUpdateProgress.FUNDEE_ACKED):
return self.pending_fee.rate return self.pending_fee.rate
return self.remote_state.feerate return self.remote_state.feerate
@ -86,7 +101,7 @@ class HTLCStateMachine(PrintError):
if self.pending_fee is not None: if self.pending_fee is not None:
if not self.constraints.is_initiator: if not self.constraints.is_initiator:
return self.pending_fee.rate return self.pending_fee.rate
if self.constraints.is_initiator and (self.pending_fee.progress & FUNDEE_ACKED): if self.constraints.is_initiator and (self.pending_fee.progress & FeeUpdateProgress.FUNDEE_ACKED):
return self.pending_fee.rate return self.pending_fee.rate
return self.local_state.feerate return self.local_state.feerate
@ -134,13 +149,10 @@ class HTLCStateMachine(PrintError):
# any past commitment transaction and use that instead; until then... # any past commitment transaction and use that instead; until then...
self.remote_commitment_to_be_revoked = Transaction(state["remote_commitment_to_be_revoked"]) self.remote_commitment_to_be_revoked = Transaction(state["remote_commitment_to_be_revoked"])
self.local_update_log = [] self.log = {LOCAL: [], REMOTE: []}
self.remote_update_log = []
self.name = name self.name = name
self.total_msat_sent = 0
self.total_msat_received = 0
self.pending_fee = None self.pending_fee = None
self.local_commitment = self.pending_local_commitment self.local_commitment = self.pending_local_commitment
@ -174,7 +186,7 @@ class HTLCStateMachine(PrintError):
should be called when preparing to send an outgoing HTLC. should be called when preparing to send an outgoing HTLC.
""" """
assert type(htlc) is UpdateAddHtlc assert type(htlc) is UpdateAddHtlc
self.local_update_log.append(htlc) self.log[LOCAL].append(htlc)
self.print_error("add_htlc") self.print_error("add_htlc")
htlc_id = self.local_state.next_htlc_id htlc_id = self.local_state.next_htlc_id
self.local_state=self.local_state._replace(next_htlc_id=htlc_id + 1) self.local_state=self.local_state._replace(next_htlc_id=htlc_id + 1)
@ -189,7 +201,7 @@ class HTLCStateMachine(PrintError):
""" """
self.print_error("receive_htlc") self.print_error("receive_htlc")
assert type(htlc) is UpdateAddHtlc assert type(htlc) is UpdateAddHtlc
self.remote_update_log.append(htlc) self.log[REMOTE].append(htlc)
htlc_id = self.remote_state.next_htlc_id htlc_id = self.remote_state.next_htlc_id
self.remote_state=self.remote_state._replace(next_htlc_id=htlc_id + 1) self.remote_state=self.remote_state._replace(next_htlc_id=htlc_id + 1)
htlc.htlc_id = htlc_id htlc.htlc_id = htlc_id
@ -208,9 +220,9 @@ class HTLCStateMachine(PrintError):
any). The HTLC signatures are sorted according to the BIP 69 order of the any). The HTLC signatures are sorted according to the BIP 69 order of the
HTLC's on the commitment transaction. HTLC's on the commitment transaction.
""" """
for htlc in self.local_update_log: for htlc in self.log[LOCAL]:
if not type(htlc) is UpdateAddHtlc: continue if not type(htlc) is UpdateAddHtlc: continue
if htlc.l_locked_in is None: htlc.l_locked_in = self.local_state.ctn if htlc.locked_in[LOCAL] is None: htlc.locked_in[LOCAL] = self.local_state.ctn
self.print_error("sign_next_commitment") self.print_error("sign_next_commitment")
pending_remote_commitment = self.pending_remote_commitment pending_remote_commitment = self.pending_remote_commitment
@ -243,9 +255,9 @@ class HTLCStateMachine(PrintError):
if self.pending_fee: if self.pending_fee:
if not self.constraints.is_initiator: if not self.constraints.is_initiator:
self.pending_fee.progress |= FUNDEE_SIGNED self.pending_fee.progress |= FeeUpdateProgress.FUNDEE_SIGNED
if self.constraints.is_initiator and (self.pending_fee.progress & FUNDEE_ACKED): if self.constraints.is_initiator and (self.pending_fee.progress & FeeUpdateProgress.FUNDEE_ACKED):
self.pending_fee.progress |= FUNDER_SIGNED self.pending_fee.progress |= FeeUpdateProgress.FUNDER_SIGNED
if self.lnwatcher: if self.lnwatcher:
self.lnwatcher.process_new_offchain_ctx(self, pending_remote_commitment, ours=False) self.lnwatcher.process_new_offchain_ctx(self, pending_remote_commitment, ours=False)
@ -265,9 +277,9 @@ class HTLCStateMachine(PrintError):
""" """
self.print_error("receive_new_commitment") self.print_error("receive_new_commitment")
for htlc in self.remote_update_log: for htlc in self.log[REMOTE]:
if not type(htlc) is UpdateAddHtlc: continue if not type(htlc) is UpdateAddHtlc: continue
if htlc.r_locked_in is None: htlc.r_locked_in = self.remote_state.ctn if htlc.locked_in[REMOTE] is None: htlc.locked_in[REMOTE] = self.remote_state.ctn
assert len(htlc_sigs) == 0 or type(htlc_sigs[0]) is bytes assert len(htlc_sigs) == 0 or type(htlc_sigs[0]) is bytes
pending_local_commitment = self.pending_local_commitment pending_local_commitment = self.pending_local_commitment
@ -294,9 +306,9 @@ class HTLCStateMachine(PrintError):
if self.pending_fee: if self.pending_fee:
if not self.constraints.is_initiator: if not self.constraints.is_initiator:
self.pending_fee.progress |= FUNDEE_SIGNED self.pending_fee.progress |= FeeUpdateProgress.FUNDEE_SIGNED
if self.constraints.is_initiator and (self.pending_fee.progress & FUNDEE_ACKED): if self.constraints.is_initiator and (self.pending_fee.progress & FeeUpdateProgress.FUNDEE_ACKED):
self.pending_fee.progress |= FUNDER_SIGNED self.pending_fee.progress |= FeeUpdateProgress.FUNDER_SIGNED
if self.lnwatcher: if self.lnwatcher:
self.lnwatcher.process_new_offchain_ctx(self, pending_local_commitment, ours=True) self.lnwatcher.process_new_offchain_ctx(self, pending_local_commitment, ours=True)
@ -321,11 +333,11 @@ class HTLCStateMachine(PrintError):
new_remote_feerate = self.remote_state.feerate new_remote_feerate = self.remote_state.feerate
if self.pending_fee is not None: if self.pending_fee is not None:
if not self.constraints.is_initiator and (self.pending_fee.progress & FUNDEE_SIGNED): if not self.constraints.is_initiator and (self.pending_fee.progress & FeeUpdateProgress.FUNDEE_SIGNED):
new_local_feerate = new_remote_feerate = self.pending_fee.rate new_local_feerate = new_remote_feerate = self.pending_fee.rate
self.pending_fee = None self.pending_fee = None
print("FEERATE CHANGE COMPLETE (non-initiator)") print("FEERATE CHANGE COMPLETE (non-initiator)")
if self.constraints.is_initiator and (self.pending_fee.progress & FUNDER_SIGNED): if self.constraints.is_initiator and (self.pending_fee.progress & FeeUpdateProgress.FUNDER_SIGNED):
new_local_feerate = new_remote_feerate = self.pending_fee.rate new_local_feerate = new_remote_feerate = self.pending_fee.rate
self.pending_fee = None self.pending_fee = None
print("FEERATE CHANGE COMPLETE (initiator)") print("FEERATE CHANGE COMPLETE (initiator)")
@ -382,41 +394,21 @@ class HTLCStateMachine(PrintError):
if self.lnwatcher: if self.lnwatcher:
self.lnwatcher.process_new_revocation_secret(self, revocation.per_commitment_secret) self.lnwatcher.process_new_revocation_secret(self, revocation.per_commitment_secret)
settle_fails2 = [] def mark_settled(subject):
for x in self.remote_update_log: """
if type(x) is not SettleHtlc: find settled htlcs for subject (LOCAL or REMOTE) and mark them settled, return value of settled htlcs
continue """
settle_fails2.append(x) old_amount = self.htlcsum(self.gen_htlc_indices(subject, False))
sent_this_batch = 0
for x in settle_fails2:
htlc = self.lookup_htlc(self.local_update_log, x.htlc_id)
sent_this_batch += htlc.amount_msat
self.total_msat_sent += sent_this_batch
# log compaction (remove entries relating to htlc's that have been settled)
to_remove = []
for x in filter(lambda x: type(x) is SettleHtlc, self.remote_update_log):
to_remove += [y for y in self.local_update_log if y.htlc_id == x.htlc_id]
# assert that we should have compacted the log earlier for x in self.log[-subject]:
assert len(to_remove) <= 1, to_remove if type(x) is not SettleHtlc: continue
if len(to_remove) == 1: htlc = self.lookup_htlc(self.log[subject], x.htlc_id)
self.remote_update_log = [x for x in self.remote_update_log if x.htlc_id != to_remove[0].htlc_id] htlc.settled[subject] = self.current_height[subject]
self.local_update_log = [x for x in self.local_update_log if x.htlc_id != to_remove[0].htlc_id]
to_remove = [] return old_amount - self.htlcsum(self.gen_htlc_indices(subject, False))
for x in filter(lambda x: type(x) is SettleHtlc, self.local_update_log):
to_remove += [y for y in self.remote_update_log if y.htlc_id == x.htlc_id]
if len(to_remove) == 1:
self.remote_update_log = [x for x in self.remote_update_log if x.htlc_id != to_remove[0].htlc_id]
self.local_update_log = [x for x in self.local_update_log if x.htlc_id != to_remove[0].htlc_id]
received_this_batch = sum(x.amount_msat for x in to_remove)
self.total_msat_received += received_this_batch sent_this_batch = mark_settled(LOCAL)
received_this_batch = mark_settled(REMOTE)
next_point = self.remote_state.next_per_commitment_point next_point = self.remote_state.next_per_commitment_point
@ -434,7 +426,7 @@ class HTLCStateMachine(PrintError):
if self.pending_fee: if self.pending_fee:
if self.constraints.is_initiator: if self.constraints.is_initiator:
self.pending_fee.progress |= FUNDEE_ACKED self.pending_fee.progress |= FeeUpdateProgress.FUNDEE_ACKED
self.local_commitment = self.pending_local_commitment self.local_commitment = self.pending_local_commitment
self.remote_commitment = self.pending_remote_commitment self.remote_commitment = self.pending_remote_commitment
@ -449,14 +441,14 @@ class HTLCStateMachine(PrintError):
return amount_unsettled return amount_unsettled
def amounts(self): def amounts(self):
remote_settled_value = self.htlcsum(self.gen_htlc_indices("remote", False)) remote_settled= self.htlcsum(self.gen_htlc_indices(REMOTE, False))
local_settled_value = self.htlcsum(self.gen_htlc_indices("local", False)) local_settled= self.htlcsum(self.gen_htlc_indices(LOCAL, False))
htlc_value_local = self.htlcsum(self.htlcs_in_local) unsettled_local = self.htlcsum(self.gen_htlc_indices(LOCAL, True))
htlc_value_remote = self.htlcsum(self.htlcs_in_remote) unsettled_remote = self.htlcsum(self.gen_htlc_indices(REMOTE, True))
local_msat = self.local_state.amount_msat -\
htlc_value_local + remote_settled_value - local_settled_value
remote_msat = self.remote_state.amount_msat -\ remote_msat = self.remote_state.amount_msat -\
htlc_value_remote + local_settled_value - remote_settled_value unsettled_remote + local_settled - remote_settled
local_msat = self.local_state.amount_msat -\
unsettled_local + remote_settled - local_settled
return remote_msat, local_msat return remote_msat, local_msat
@property @property
@ -525,61 +517,70 @@ class HTLCStateMachine(PrintError):
local_msat, remote_msat, htlcs_in_local + htlcs_in_remote) local_msat, remote_msat, htlcs_in_local + htlcs_in_remote)
return commit return commit
def gen_htlc_indices(self, subject, just_unsettled=True): @property
assert subject in ["local", "remote"] def total_msat(self):
update_log = (self.remote_update_log if subject == "remote" else self.local_update_log) return {LOCAL: self.htlcsum(self.gen_htlc_indices(LOCAL, False, True)), REMOTE: self.htlcsum(self.gen_htlc_indices(REMOTE, False, True))}
other_log = (self.remote_update_log if subject != "remote" else self.local_update_log)
def gen_htlc_indices(self, subject, only_pending, include_settled=False):
"""
only_pending: require the htlc's settlement to be pending (needs additional signatures/acks)
include_settled: include settled (totally done with) htlcs
"""
update_log = self.log[subject]
other_log = self.log[-subject]
res = [] res = []
for htlc in update_log: for htlc in update_log:
if type(htlc) is not UpdateAddHtlc: if type(htlc) is not UpdateAddHtlc:
continue continue
height = (self.local_state.ctn if subject == "remote" else self.remote_state.ctn) height = self.current_height[-subject]
locked_in = (htlc.r_locked_in if subject == "remote" else htlc.l_locked_in) locked_in = htlc.locked_in[subject]
if locked_in is None or just_unsettled == (SettleHtlc(htlc.htlc_id) in other_log): if locked_in is None or only_pending == (SettleHtlc(htlc.htlc_id) in other_log):
continue continue
settled_cutoff = self.local_state.ctn if subject == LOCAL else self.remote_state.ctn
if not include_settled and htlc.settled[subject] is not None and settled_cutoff >= htlc.settled[subject]:
continue
res.append(htlc) res.append(htlc)
return res return res
@property @property
def htlcs_in_local(self): def htlcs_in_local(self):
"""in the local log. 'offered by us'""" """in the local log. 'offered by us'"""
return self.gen_htlc_indices("local") return self.gen_htlc_indices(LOCAL, True)
@property @property
def htlcs_in_remote(self): def htlcs_in_remote(self):
"""in the remote log. 'offered by them'""" """in the remote log. 'offered by them'"""
return self.gen_htlc_indices("remote") return self.gen_htlc_indices(REMOTE, True)
def settle_htlc(self, preimage, htlc_id): def settle_htlc(self, preimage, htlc_id):
""" """
SettleHTLC attempts to settle an existing outstanding received HTLC. SettleHTLC attempts to settle an existing outstanding received HTLC.
""" """
self.print_error("settle_htlc") self.print_error("settle_htlc")
htlc = self.lookup_htlc(self.remote_update_log, htlc_id) htlc = self.lookup_htlc(self.log[REMOTE], htlc_id)
assert htlc.payment_hash == sha256(preimage) assert htlc.payment_hash == sha256(preimage)
self.local_update_log.append(SettleHtlc(htlc_id)) self.log[LOCAL].append(SettleHtlc(htlc_id))
def receive_htlc_settle(self, preimage, htlc_index): def receive_htlc_settle(self, preimage, htlc_index):
self.print_error("receive_htlc_settle") self.print_error("receive_htlc_settle")
htlc = self.lookup_htlc(self.local_update_log, htlc_index) htlc = self.lookup_htlc(self.log[LOCAL], htlc_index)
assert htlc.payment_hash == sha256(preimage) assert htlc.payment_hash == sha256(preimage)
assert len([x.htlc_id == htlc_index for x in self.local_update_log]) == 1 assert len([x.htlc_id == htlc_index for x in self.log[LOCAL]]) == 1
self.remote_update_log.append(SettleHtlc(htlc_index)) self.log[REMOTE].append(SettleHtlc(htlc_index))
def fail_htlc(self, htlc): def fail_htlc(self, htlc):
# TODO # TODO
self.local_update_log = [] self.log[LOCAL] = []
self.remote_update_log = [] self.log[REMOTE] = []
self.print_error("fail_htlc (EMPTIED LOGS)") self.print_error("fail_htlc (EMPTIED LOGS)")
@property @property
def l_current_height(self): def current_height(self):
return self.local_state.ctn return {LOCAL: self.local_state.ctn, REMOTE: self.remote_state.ctn}
@property
def r_current_height(self):
return self.remote_state.ctn
@property @property
def pending_local_fee(self): def pending_local_fee(self):

28
electrum/tests/test_lnhtlc.py
Unescape View File

@ -9,6 +9,8 @@ import electrum.util as util
import os import os
import binascii import binascii
from electrum.lnhtlc import SENT, LOCAL, REMOTE, RECEIVED
def create_channel_state(funding_txid, funding_index, funding_sat, local_feerate, is_initiator, local_amount, remote_amount, privkeys, other_pubkeys, seed, cur, nex, other_node_id, l_dust, r_dust, l_csv, r_csv): def create_channel_state(funding_txid, funding_index, funding_sat, local_feerate, is_initiator, local_amount, remote_amount, privkeys, other_pubkeys, seed, cur, nex, other_node_id, l_dust, r_dust, l_csv, r_csv):
assert local_amount > 0 assert local_amount > 0
assert remote_amount > 0 assert remote_amount > 0
@ -195,10 +197,10 @@ class TestLNBaseHTLCStateMachine(unittest.TestCase):
aliceSent = 0 aliceSent = 0
bobSent = 0 bobSent = 0
self.assertEqual(alice_channel.total_msat_sent, aliceSent, "alice has incorrect milli-satoshis sent") 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(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[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.total_msat[RECEIVED], aliceSent, "bob has incorrect milli-satoshis received")
self.assertEqual(bob_channel.local_state.ctn, 1, "bob has incorrect commitment height") self.assertEqual(bob_channel.local_state.ctn, 1, "bob has incorrect commitment height")
self.assertEqual(alice_channel.local_state.ctn, 1, "alice has incorrect commitment height") self.assertEqual(alice_channel.local_state.ctn, 1, "alice has incorrect commitment height")
@ -236,18 +238,18 @@ class TestLNBaseHTLCStateMachine(unittest.TestCase):
# should show 1 BTC received. They should also be at commitment height # should show 1 BTC received. They should also be at commitment height
# two, with the revocation window extended by 1 (5). # two, with the revocation window extended by 1 (5).
mSatTransferred = one_bitcoin_in_msat mSatTransferred = one_bitcoin_in_msat
self.assertEqual(alice_channel.total_msat_sent, mSatTransferred, "alice satoshis sent incorrect %s vs %s expected"% (alice_channel.total_msat_sent, mSatTransferred)) self.assertEqual(alice_channel.total_msat[SENT], mSatTransferred, "alice satoshis sent incorrect")
self.assertEqual(alice_channel.total_msat_received, 0, "alice satoshis received incorrect %s vs %s expected"% (alice_channel.total_msat_received, 0)) self.assertEqual(alice_channel.total_msat[RECEIVED], 0, "alice satoshis received incorrect")
self.assertEqual(bob_channel.total_msat_received, mSatTransferred, "bob satoshis received incorrect %s vs %s expected"% (bob_channel.total_msat_received, mSatTransferred)) self.assertEqual(bob_channel.total_msat[RECEIVED], mSatTransferred, "bob satoshis received incorrect")
self.assertEqual(bob_channel.total_msat_sent, 0, "bob satoshis sent incorrect %s vs %s expected"% (bob_channel.total_msat_sent, 0)) self.assertEqual(bob_channel.total_msat[SENT], 0, "bob satoshis sent incorrect")
self.assertEqual(bob_channel.l_current_height, 2, "bob has incorrect commitment height, %s vs %s"% (bob_channel.l_current_height, 2)) self.assertEqual(bob_channel.current_height[LOCAL], 2, "bob has incorrect commitment height")
self.assertEqual(alice_channel.l_current_height, 2, "alice has incorrect commitment height, %s vs %s"% (alice_channel.l_current_height, 2)) self.assertEqual(alice_channel.current_height[LOCAL], 2, "alice has incorrect commitment height")
# The logs of both sides should now be cleared since the entry adding # The logs of both sides should now be cleared since the entry adding
# the HTLC should have been removed once both sides receive the # the HTLC should have been removed once both sides receive the
# revocation. # revocation.
self.assertEqual(alice_channel.local_update_log, [], "alice's local not updated, should be empty, has %s entries instead"% len(alice_channel.local_update_log)) #self.assertEqual(alice_channel.local_update_log, [], "alice's local not updated, should be empty, has %s entries instead"% len(alice_channel.local_update_log))
self.assertEqual(alice_channel.remote_update_log, [], "alice's remote not updated, should be empty, has %s entries instead"% len(alice_channel.remote_update_log)) #self.assertEqual(alice_channel.remote_update_log, [], "alice's remote not updated, should be empty, has %s entries instead"% len(alice_channel.remote_update_log))
def alice_to_bob_fee_update(self): def alice_to_bob_fee_update(self):
fee = 111 fee = 111
@ -340,7 +342,7 @@ class TestLNHTLCDust(unittest.TestCase):
alice_channel.receive_htlc_settle(paymentPreimage, aliceHtlcIndex) alice_channel.receive_htlc_settle(paymentPreimage, aliceHtlcIndex)
force_state_transition(bob_channel, alice_channel) force_state_transition(bob_channel, alice_channel)
self.assertEqual(len(alice_channel.local_commitment.outputs()), 2) self.assertEqual(len(alice_channel.local_commitment.outputs()), 2)
self.assertEqual(alice_channel.total_msat_sent // 1000, htlcAmt) self.assertEqual(alice_channel.total_msat[SENT] // 1000, htlcAmt)
def force_state_transition(chanA, chanB): def force_state_transition(chanA, chanB):
chanB.receive_new_commitment(*chanA.sign_next_commitment()) chanB.receive_new_commitment(*chanA.sign_next_commitment())

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