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on_update_fail_htlc: don't send commitment without changes

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c-lightning was force-closing channels with us: "[lnbase:127.0.0.1] error commit_sig with no changes"
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SomberNight 2018-10-09 16:34:49 +02:00
parent bea5fd8ba8
commit 9578bfca12
No known key found for this signature in database
GPG key ID: B33B5F232C6271E9
1 changed files with 4 additions and 6 deletions
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8
electrum/lnbase.py
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@ -985,20 +985,18 @@ class Peer(PrintError):
code = failure_msg.code code = failure_msg.code
code_name = ONION_FAILURE_CODE_MAP.get(code, 'unknown_error!!') code_name = ONION_FAILURE_CODE_MAP.get(code, 'unknown_error!!')
data = failure_msg.data data = failure_msg.data
print("UPDATE_FAIL_HTLC", code_name, code, data) self.print_error("UPDATE_FAIL_HTLC", code_name, code, data)
try: try:
short_chan_id = route[sender_idx + 1].short_channel_id short_chan_id = route[sender_idx + 1].short_channel_id
except IndexError: except IndexError:
print("payment destination reported error") self.print_error("payment destination reported error")
else: else:
# TODO this should depend on the error # TODO this should depend on the error
# also, we need finer blacklisting (directed edges; nodes) # also, we need finer blacklisting (directed edges; nodes)
self.network.path_finder.blacklist.add(short_chan_id) self.network.path_finder.blacklist.add(short_chan_id)
print("HTLC failure with code {} ({})".format(code, code_name)) self.print_error("HTLC failure with code {} ({})".format(code, code_name))
chan = self.channels[channel_id] chan = self.channels[channel_id]
self.send_commitment(chan)
await self.receive_revoke(chan)
chan.receive_fail_htlc(htlc_id) chan.receive_fail_htlc(htlc_id)
await self.receive_commitment(chan) await self.receive_commitment(chan)
self.revoke(chan) self.revoke(chan)