tlnbase: avoid race while waiting for funding_locked, wait for un-reversed hash - electrum - Electrum Bitcoin wallet
(HTM) git clone https://git.parazyd.org/electrum
(DIR) Log
(DIR) Files
(DIR) Refs
(DIR) Submodules
---
(DIR) commit f0e19ffdfd52ceb675bb9ce6fd1e0a96ea03b93e
(DIR) parent 4d3c34e04e827d57e25f5b7851e1565cac3b984e
(HTM) Author: Janus <ysangkok@gmail.com>
Date: Thu, 19 Apr 2018 17:28:20 +0200
lnbase: avoid race while waiting for funding_locked, wait for un-reversed hash
Diffstat:
M lib/lnbase.py | 32 ++++++++++++++++---------------
M lib/tests/test_lnbase_online.py | 1 -
2 files changed, 17 insertions(+), 16 deletions(-)
---
(DIR) diff --git a/lib/lnbase.py b/lib/lnbase.py
t@@ -588,7 +588,7 @@ class Peer(PrintError):
def on_funding_locked(self, payload):
channel_id = int.from_bytes(payload['channel_id'], byteorder="big")
- self.funding_locked[channel_id].set_result(payload)
+ self.remote_funding_locked[channel_id].set_result(payload)
def on_node_announcement(self, payload):
pubkey = payload['node_id']
t@@ -766,29 +766,31 @@ class Peer(PrintError):
revocation_pubkey, local_delayedpubkey,
funding_txid, funding_index, funding_satoshis,
local_amount, remote_amount, to_self_delay, dust_limit_satoshis)
- # return for now
- print('Done')
- return
+ self.print_error('Done making commitment')
+
# broadcast funding tx
self.local_funding_locked[channel_id] = asyncio.Future()
self.remote_funding_locked[channel_id] = asyncio.Future()
- self.network.broadcast(funding_tx)
+ success, _txid = self.network.broadcast(funding_tx)
+ assert success
# wait until we see confirmations
def on_network_update(event, *args):
if event == 'updated':
- conf = wallet.get_tx_height(funding_txid)[1]
+ conf = wallet.get_tx_height(bh2u(funding_txid[::-1]))[1]
if conf >= funding_txn_minimum_depth:
- try:
- self.local_funding_locked[channel_id].set_result(1)
- except (asyncio.InvalidStateError, KeyError) as e:
- # FIXME race condition if updates come in quickly, set_result might be called multiple times
- # or self.local_funding_locked[channel_id] might be deleted already
- self.print_error('local_funding_locked.set_result error for channel {}: {}'.format(channel_id, e))
- self.network.unregister_callback(on_network_update, ['updated'])
+ async def set_local_funding_locked_result():
+ try:
+ self.local_funding_locked[channel_id].set_result(1)
+ except (asyncio.InvalidStateError, KeyError) as e:
+ # FIXME race condition if updates come in quickly, set_result might be called multiple times
+ # or self.local_funding_locked[channel_id] might be deleted already
+ self.print_error('local_funding_locked.set_result error for channel {}: {}'.format(channel_id, e))
+ asyncio.run_coroutine_threadsafe(set_local_funding_locked_result(), asyncio.get_event_loop())
+ self.network.unregister_callback(on_network_update)
else:
self.print_error("unexpected network message:", event, args)
- self.network.register_callback(on_network_update, ['updated'])
+ self.network.register_callback(on_network_update, ['updated']) # thread safe
try:
await self.local_funding_locked[channel_id]
t@@ -800,7 +802,7 @@ class Peer(PrintError):
payload = await self.remote_funding_locked[channel_id]
finally:
del self.remote_funding_locked[channel_id]
- self.print_error('Done')
+ self.print_error('Done waiting for remote_funding_locked')
def on_update_add_htlc(self, payload):
# no onion routing for the moment: we assume we are the end node
(DIR) diff --git a/lib/tests/test_lnbase_online.py b/lib/tests/test_lnbase_online.py
t@@ -39,7 +39,6 @@ if __name__ == "__main__":
peer = Peer(host, port, pubkey, request_initial_sync=False, network=network)
network.futures.append(asyncio.run_coroutine_threadsafe(peer.main_loop(), network.asyncio_loop))
# run blocking test
- start = time.time()
coro = peer.channel_establishment_flow(wallet, config)
fut = asyncio.run_coroutine_threadsafe(coro, network.asyncio_loop)
while network.asyncio_loop.is_running():