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Specify max HTLC nLocktime for expiry_too_far

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Antoine Riard 2023-06-05 00:49:45 +01:00
parent fbd19efe1f
commit bccab9afc2
1 changed files with 6 additions and 1 deletions
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7
04-onion-routing.md
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@ -62,6 +62,7 @@ A node:
* [Returning Errors](#returning-errors)
* [Failure Messages](#failure-messages)
* [Receiving Failure Codes](#receiving-failure-codes)
* [`max_htlc_cltv` Selection](#max-htlc-cltv-selection)
* [Onion Messages](#onion-messages)
* [Test Vector](#test-vector)
* [Returning Errors](#returning-errors)
@ -1333,7 +1334,7 @@ A _forwarding node_ MAY, but a _final node_ MUST NOT:
- if the `cltv_expiry` is unreasonably near the present:
- report the current channel setting for the outgoing channel.
- return an `expiry_too_soon` error.
- if the `cltv_expiry` is unreasonably far in the future:
- if the `cltv_expiry` is more than `max_htlc_cltv` in the future:
- return an `expiry_too_far` error.
- if the channel is disabled:
- report the current channel setting for the outgoing channel.
@ -1580,6 +1581,10 @@ Onion messages don't explicitly require a channel, but for
spam-reduction a node may choose to ratelimit such peers, especially
messages it is asked to forward.
## `max_htlc_cltv` Selection
This `max_htlc_ctlv` value is defined as 2016 blocks, based on historical value
deployed by Lightning implementations.
# Test Vector