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bolt07: enforce htlc_maximum_msat >= htlc_minimum_msat (#1089)

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Carla Kirk-Cohen 2023-06-25 08:35:18 -04:00 committed by GitHub
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07-routing-gossip.md
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@ -474,6 +474,7 @@ The origin node:
- MUST set `htlc_maximum_msat` to the maximum value it will send through this channel for a single HTLC. - MUST set `htlc_maximum_msat` to the maximum value it will send through this channel for a single HTLC.
- MUST set this to less than or equal to the channel capacity. - MUST set this to less than or equal to the channel capacity.
- MUST set this to less than or equal to `max_htlc_value_in_flight_msat` it received from the peer. - MUST set this to less than or equal to `max_htlc_value_in_flight_msat` it received from the peer.
- MUST set this to greater than or equal to `htlc_minimum_msat`.
- MUST set `must_be_one` in `message_flags` to 1. - MUST set `must_be_one` in `message_flags` to 1.
- MUST set bits in `channel_flags` and `message_flags` that are not assigned a meaning to 0. - MUST set bits in `channel_flags` and `message_flags` that are not assigned a meaning to 0.
- MAY create and send a `channel_update` with the `disable` bit set to 1, to - MAY create and send a `channel_update` with the `disable` bit set to 1, to
@ -489,6 +490,7 @@ The origin node:
an incoming HTLC's `cltv_expiry`. an incoming HTLC's `cltv_expiry`.
- MUST set `htlc_minimum_msat` to the minimum HTLC value (in millisatoshi) - MUST set `htlc_minimum_msat` to the minimum HTLC value (in millisatoshi)
that the channel peer will accept. that the channel peer will accept.
- MUST set `htlc_minimum_msat` to less than or equal to `htlc_maximum_msat`.
- MUST set `fee_base_msat` to the base fee (in millisatoshi) it will charge - MUST set `fee_base_msat` to the base fee (in millisatoshi) it will charge
for any HTLC. for any HTLC.
- MUST set `fee_proportional_millionths` to the amount (in millionths of a - MUST set `fee_proportional_millionths` to the amount (in millionths of a
@ -528,6 +530,8 @@ The receiving node:
- otherwise: - otherwise:
- SHOULD queue the message for rebroadcasting. - SHOULD queue the message for rebroadcasting.
- MAY choose NOT to for messages longer than the minimum expected length. - MAY choose NOT to for messages longer than the minimum expected length.
- if `htlc_maximum_msat` < `htlc_minimum_msat`:
- SHOULD ignore this channel during route considerations.
- if `htlc_maximum_msat` is greater than channel capacity: - if `htlc_maximum_msat` is greater than channel capacity:
- MAY blacklist this `node_id` - MAY blacklist this `node_id`
- SHOULD ignore this channel during route considerations. - SHOULD ignore this channel during route considerations.