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peer: clamp a link's max HTLC forwarding policy to current max HTLC pay size

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In this commit, we start to clamp the max HTLC forwarding policy to the
current register max HTLC payment size. By doing this, we ensure that
any links that have a advertised max HTLC transit size above the max
payment size will reject any incoming or outgoing attempts for such
large payments.
This commit is contained in:
Olaoluwa Osuntokun 2019-12-04 15:01:38 -08:00
parent 392c1a9a1b
commit c943d85019
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GPG Key ID: BC13F65E2DC84465
1 changed files with 6 additions and 0 deletions
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6
peer.go
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@ -535,6 +535,9 @@ func (p *peer) loadActiveChannels(chans []*channeldb.OpenChannel) (
FeeRate: selfPolicy.FeeProportionalMillionths,
TimeLockDelta: uint32(selfPolicy.TimeLockDelta),
}
if forwardingPolicy.MaxHTLC > MaxPaymentMSat {
forwardingPolicy.MaxHTLC = MaxPaymentMSat
}
} else {
peerLog.Warnf("Unable to find our forwarding policy "+
"for channel %v, using default values",
@ -1866,6 +1869,9 @@ out:
FeeRate: defaultPolicy.FeeRate,
TimeLockDelta: defaultPolicy.TimeLockDelta,
}
if forwardingPolicy.MaxHTLC > MaxPaymentMSat {
forwardingPolicy.MaxHTLC = MaxPaymentMSat
}
// Create the link and add it to the switch.
err = p.addLink(