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BOLT 7: split flags field in channel_update.

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This is not a semantic change: only the lower two bits were defined.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
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Rusty Russell 2018-08-07 10:01:47 +09:30 committed by Christian Decker
parent 76b1ce9ae5
commit 0891374d47
1 changed files with 6 additions and 5 deletions
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11
07-routing-gossip.md
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@ -346,7 +346,7 @@ Don't be like the school of [Little Bobby Tables](https://xkcd.com/327/).
After a channel has been initially announced, each side independently
announces the fees and minimum expiry delta it requires to relay HTLCs
through this channel. Each uses the 8-byte channel shortid that matches the
`channel_announcement` and the 1-bit `flags` field to indicate which end of the
`channel_announcement` and the 1-bit `channel_flags` field to indicate which end of the
channel it's on (origin or final). A node can do this multiple times, in
order to change fees.
@ -366,13 +366,14 @@ of *relaying* payments, not *sending* payments. When making a payment
* [`32`:`chain_hash`]
* [`8`:`short_channel_id`]
* [`4`:`timestamp`]
* [`2`:`flags`]
* [`1`:`message_flags`]
* [`1`:`channel_flags`]
* [`2`:`cltv_expiry_delta`]
* [`8`:`htlc_minimum_msat`]
* [`4`:`fee_base_msat`]
* [`4`:`fee_proportional_millionths`]
The `flags` bitfield is used to indicate the direction of the channel: it
The `channel_flags` bitfield is used to indicate the direction of the channel: it
identifies the node that this update originated from and signals various options
concerning the channel. The following table specifies the meaning of its
individual bits:
@ -402,9 +403,9 @@ The origin node:
8-byte channel ID that uniquely identifies the channel specified in the
`channel_announcement` message.
- if the origin node is `node_id_1` in the message:
- MUST set the `direction` bit of `flags` to 0.
- MUST set the `direction` bit of `channel_flags` to 0.
- otherwise:
- MUST set the `direction` bit of `flags` to 1.
- MUST set the `direction` bit of `channel_flags` to 1.
- MUST set bits that are not assigned a meaning to 0.
- MAY create and send a `channel_update` with the `disable` bit set to 1, to
signal a channel's temporary unavailability (e.g. due to a loss of