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make sure we can send shutdown

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ThomasV 2020-02-27 19:17:58 +01:00
parent ed234d3444
commit 8f6fc5917a
1 changed files with 15 additions and 0 deletions
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15
electrum/lnpeer.py
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@ -88,6 +88,8 @@ class Peer(Logger):
self.ordered_messages = ['accept_channel', 'funding_signed', 'funding_created', 'accept_channel', 'channel_reestablish', 'closing_signed']
self.ordered_message_queues = defaultdict(asyncio.Queue) # for messsage that are ordered
self.temp_id_to_id = {} # to forward error messages
self.funding_created_sent = set() # for channels in PREOPENING
self.funding_signed_sent = set() # for channels in PREOPENING
self.shutdown_received = {}
self.announcement_signatures = defaultdict(asyncio.Queue)
self.orphan_channel_updates = OrderedDict()
@ -600,6 +602,7 @@ class Peer(Logger):
funding_txid=funding_txid_bytes,
funding_output_index=funding_index,
signature=sig_64)
self.funding_created_sent.add(channel_id)
payload = await self.wait_for_message('funding_signed', channel_id)
self.logger.info('received funding_signed')
remote_sig = payload['signature']
@ -697,6 +700,7 @@ class Peer(Logger):
channel_id=channel_id,
signature=sig_64,
)
self.funding_signed_sent.add(chan.channel_id)
chan.open_with_first_pcp(payload['first_per_commitment_point'], remote_sig)
chan.set_state(channel_states.OPENING)
self.lnworker.add_new_channel(chan)
@ -1386,7 +1390,18 @@ class Peer(Logger):
txid = await self._shutdown(chan, payload, False)
self.logger.info(f'({chan.get_id_for_log()}) Channel closed by remote peer {txid}')
def can_send_shutdown(self, chan):
if chan.get_state() >= channel_states.OPENING:
return True
if chan.constraints.is_initiator and chan.channel_id in self.funding_created_sent:
return True
if not chan.constraints.is_initiator and chan.channel_id in self.funding_signed_sent:
return True
return False
async def send_shutdown(self, chan: Channel):
if not self.can_send_shutdown(chan):
raise Exception('cannot send shutdown')
scriptpubkey = bfh(bitcoin.address_to_script(chan.sweep_address))
# wait until no more pending updates (bolt2)
chan.set_can_send_ctx_updates(False)