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trampoline MPP: handle direct payment to trampoline node

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This commit is contained in:
ThomasV
2022-09-20 11:44:23 +02:00
parent 9251f482b5
commit 5e77886b98
1 changed files with 29 additions and 21 deletions
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50
electrum/lnworker.py
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@@ -1673,27 +1673,35 @@ class LNWallet(LNWorker):
routes = []
for trampoline_node_id, trampoline_parts in per_trampoline_channel_amounts.items():
per_trampoline_amount = sum([x[1] for x in trampoline_parts])
trampoline_route, trampoline_onion, per_trampoline_amount_with_fees, per_trampoline_cltv_delta = create_trampoline_route_and_onion(
amount_msat=per_trampoline_amount,
total_msat=final_total_msat,
min_cltv_expiry=min_cltv_expiry,
my_pubkey=self.node_keypair.pubkey,
invoice_pubkey=invoice_pubkey,
invoice_features=invoice_features,
node_id=trampoline_node_id,
r_tags=r_tags,
payment_hash=payment_hash,
payment_secret=payment_secret,
local_height=local_height,
trampoline_fee_level=trampoline_fee_level,
use_two_trampolines=use_two_trampolines,
failed_routes=self.failed_trampoline_routes)
# node_features is only used to determine is_tlv
per_trampoline_secret = os.urandom(32)
per_trampoline_fees = per_trampoline_amount_with_fees - per_trampoline_amount
self.logger.info(f'created route with trampoline fee level={trampoline_fee_level}')
self.logger.info(f'trampoline hops: {[hop.end_node.hex() for hop in trampoline_route]}')
self.logger.info(f'per trampoline fees: {per_trampoline_fees}')
if trampoline_node_id == invoice_pubkey:
trampoline_route = None
trampoline_onion = None
per_trampoline_secret = payment_secret
per_trampoline_amount_with_fees = amount_msat
per_trampoline_cltv_delta = min_cltv_expiry
per_trampoline_fees = 0
else:
trampoline_route, trampoline_onion, per_trampoline_amount_with_fees, per_trampoline_cltv_delta = create_trampoline_route_and_onion(
amount_msat=per_trampoline_amount,
total_msat=final_total_msat,
min_cltv_expiry=min_cltv_expiry,
my_pubkey=self.node_keypair.pubkey,
invoice_pubkey=invoice_pubkey,
invoice_features=invoice_features,
node_id=trampoline_node_id,
r_tags=r_tags,
payment_hash=payment_hash,
payment_secret=payment_secret,
local_height=local_height,
trampoline_fee_level=trampoline_fee_level,
use_two_trampolines=use_two_trampolines,
failed_routes=self.failed_trampoline_routes)
# node_features is only used to determine is_tlv
per_trampoline_secret = os.urandom(32)
per_trampoline_fees = per_trampoline_amount_with_fees - per_trampoline_amount
self.logger.info(f'created route with trampoline fee level={trampoline_fee_level}')
self.logger.info(f'trampoline hops: {[hop.end_node.hex() for hop in trampoline_route]}')
self.logger.info(f'per trampoline fees: {per_trampoline_fees}')
for chan_id, part_amount_msat in trampoline_parts:
chan = self.channels[chan_id]
margin = chan.available_to_spend(LOCAL, strict=True) - part_amount_msat