AaronFiore/electrum
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Trampoline: always increase fees, to ensure we do not get stuck in a loop.

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Also handle TEMPORARY_CHANNEL_FAILURE, which is sometimes returned by Eclair.
This commit is contained in:
ThomasV
2022-06-15 19:13:13 +02:00
parent 9fe93524b7
commit cfb6ab6822
1 changed files with 16 additions and 9 deletions
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25
electrum/lnworker.py
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@@ -1274,25 +1274,32 @@ class LNWallet(LNWorker):
raise PaymentFailure(failure_msg.code_name())
# trampoline
if not self.channel_db:
def maybe_raise_trampoline_fee(htlc_log):
global trampoline_fee_level
if htlc_log.trampoline_fee_level == trampoline_fee_level:
trampoline_fee_level += 1
self.logger.info(f'raising trampoline fee level {trampoline_fee_level}')
else:
self.logger.info(f'NOT raising trampoline fee level, already at {trampoline_fee_level}')
# FIXME The trampoline nodes in the path are chosen randomly.
# Some of the errors might depend on how we have chosen them.
# Having more attempts is currently useful in part because of the randomness,
# instead we should give feedback to create_routes_for_payment.
if code in (OnionFailureCode.TRAMPOLINE_FEE_INSUFFICIENT,
OnionFailureCode.TRAMPOLINE_EXPIRY_TOO_SOON):
if code in (
OnionFailureCode.TRAMPOLINE_FEE_INSUFFICIENT,
OnionFailureCode.TRAMPOLINE_EXPIRY_TOO_SOON):
# TODO: parse the node policy here (not returned by eclair yet)
# TODO: erring node is always the first trampoline even if second
# trampoline demands more fees, we can't influence this
if htlc_log.trampoline_fee_level == trampoline_fee_level:
trampoline_fee_level += 1
self.logger.info(f'raising trampoline fee level {trampoline_fee_level}')
else:
self.logger.info(f'NOT raising trampoline fee level, already at {trampoline_fee_level}')
maybe_raise_trampoline_fee(htlc_log)
continue
elif use_two_trampolines:
use_two_trampolines = False
elif code in (OnionFailureCode.UNKNOWN_NEXT_PEER,
OnionFailureCode.TEMPORARY_NODE_FAILURE):
elif code in (
OnionFailureCode.UNKNOWN_NEXT_PEER,
OnionFailureCode.TEMPORARY_NODE_FAILURE,
OnionFailureCode.TEMPORARY_CHANNEL_FAILURE):
maybe_raise_trampoline_fee(htlc_log)
continue
else:
raise PaymentFailure(failure_msg.code_name())