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htlcswitch: lower max outgoing cltv expiry to one week worth of blocks

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The current value was based on the previous default CLTV delta of 144
blocks. This has been lowered to 40 since lnd v0.6.0-beta, making the
current value of 5000 blocks a bit high. Lowering it to one week should
be more than enough to account for the other major lightning
implementations. Eclair currently has a default CLTV delta of 144, while
c-lightning's is 14.
This commit is contained in:
Wilmer Paulino 2019-07-26 18:06:40 -07:00
parent 87ff463abd
commit 24ca962f75
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1 changed files with 5 additions and 3 deletions
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8
htlcswitch/link.go
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@ -37,9 +37,11 @@ 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 5000 is based on the maximum number of hops (20), the
// default cltv delta (144) and some extra margin.
DefaultMaxOutgoingCltvExpiry = 5000
// 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
// DefaultMinLinkFeeUpdateTimeout represents the minimum interval in
// which a link should propose to update its commitment fee rate.