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htlcswitch: raise max cltv limit to 2016 blocks

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The previous limit of 1008 proved to be low, given that almost 50% of
the network still advertises CLTV deltas of 144 blocks, possibly
resulting in routes with many hops failing.
This commit is contained in:
Wilmer Paulino 2019-10-11 15:47:52 -04:00
parent cbf7e4886a
commit 4e1658a02f
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1 changed files with 6 additions and 5 deletions
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11
htlcswitch/link.go
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@ -39,11 +39,12 @@ const (
// willing to lock its own funds too, could force the funds of this node
// to be locked up for an indefinite (max int32) number of blocks.
//
// The value 1008 corresponds to on average one week worth of blocks and
// is based on the maximum number of hops (20), the default cltv delta
// (40) and some extra margin to account for the other lightning
// implementations.
DefaultMaxOutgoingCltvExpiry = 1008
// The value 2016 corresponds to on average two weeks worth of blocks
// and is based on the maximum number of hops (20), the default CLTV
// delta (40), and some extra margin to account for the other lightning
// implementations and past lnd versions which used to have a default
// CLTV delta of 144.
DefaultMaxOutgoingCltvExpiry = 2016
// DefaultMinLinkFeeUpdateTimeout represents the minimum interval in
// which a link should propose to update its commitment fee rate.