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lnrouter: use htlc_maximum_msat

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This commit is contained in:
SomberNight
2018-10-16 17:08:44 +02:00
committed by ThomasV
parent ff0aa90ddf
commit 52377dbfa0
1 changed files with 6 additions and 3 deletions
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9
electrum/lnrouter.py
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@@ -150,7 +150,7 @@ class ChannelInfoDirectedPolicy:
fee_proportional_millionths = channel_update_payload['fee_proportional_millionths']
channel_flags = channel_update_payload['channel_flags']
timestamp = channel_update_payload['timestamp']
htlc_maximum_msat = channel_update_payload.get('htlc_maximum_msat') # optional
htlc_maximum_msat = channel_update_payload.get('htlc_maximum_msat') # optional
self.cltv_expiry_delta = int.from_bytes(cltv_expiry_delta, "big")
self.htlc_minimum_msat = int.from_bytes(htlc_minimum_msat, "big")
@@ -497,7 +497,7 @@ class LNPathFinder(PrintError):
"""Heuristic cost of going through a channel.
direction: 0 or 1. --- 0 means node_id_1 -> node_id_2
"""
channel_info = self.channel_db.get_channel_info(short_channel_id)
channel_info = self.channel_db.get_channel_info(short_channel_id) # type: ChannelInfo
if channel_info is None:
return float('inf')
@@ -514,8 +514,11 @@ class LNPathFinder(PrintError):
if channel_info.capacity_sat is not None and \
payment_amt_msat // 1000 > channel_info.capacity_sat:
return float('inf') # payment amount too large
if channel_policy.htlc_maximum_msat is not None and \
payment_amt_msat > channel_policy.htlc_maximum_msat:
return float('inf') # payment amount too large
amt = payment_amt_msat or 50000 * 1000 # guess for typical payment amount
fee_msat = fee_base_msat + amt * fee_proportional_millionths / 1000000
fee_msat = fee_base_msat + amt * fee_proportional_millionths / 1_000_000
# TODO revise
# paying 10 more satoshis ~ waiting one more block
fee_cost = fee_msat / 1000 / 10