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ln: add two trimming tests, avoid negative numbers in htlc trim decision

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This commit is contained in:
Janus
2018-07-06 18:55:17 +02:00
committed by ThomasV
parent 03c2b954d9
commit 605d6ff5ca
3 changed files with 118 additions and 125 deletions
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4
lib/lnhtlc.py
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@@ -203,7 +203,9 @@ class HTLCStateMachine(PrintError):
assert len(htlcs) <= 1
for htlc in htlcs:
weight = HTLC_SUCCESS_WEIGHT if we_receive else HTLC_TIMEOUT_WEIGHT
if htlc.amount_msat // 1000 - weight * (self.remote_state.feerate // 1000) < self.remote_config.dust_limit_sat:
fee = self.remote_state.feerate // 1000 * weight
if htlc.amount_msat // 1000 < self.remote_config.dust_limit_sat + fee:
print("value too small, skipping. htlc amt: {}, weight: {}, remote feerate {}, remote dust limit {}".format( htlc.amount_msat, weight, self.remote_state.feerate, self.remote_config.dust_limit_sat))
continue
original_htlc_output_index = 0
args = [self.remote_state.next_per_commitment_point, for_us, we_receive, htlc.amount_msat + htlc.total_fee, htlc.cltv_expiry, htlc.payment_hash, self.pending_remote_commitment, original_htlc_output_index]