Hi, ZmnSCPxj.
> An idea we want to consider is to simply send `channel_update` as soon as we
lock in the channel:
> https://github.com/ElementsProject/lightning/pull/1330#issuecomment-383931817
Our node(ptarmigan) discard `channel_update` without `channel_announcement`.
We want to implement it.
I have some questions.
* Does `channel_update` send only for `announce_channel == 0`(in`
open_channel.channel_flags`) ?
* Does `channel_update` send every time after `funding_locked`
sending(established and reconnection) ?
Regards,
nayuta-ueno
On 2018/04/27 8:35, ZmnSCPxj via Lightning-dev wrote:
Good morning list,
While implementing support for `r` field in invoices, I stumbled upon some
issues regarding *creating* invoices with `r` fields.
In order to receive via an unpublished channel, we need to know what onLightning fees the other side of that channel wants to charge. We cannot use
our own onLightning fees because our fees apply if we were forwarding to the other side.
However, in case of an unpublished channel, we do not send channel_announcement, and in that case we do not send channel_update. So the other side of
the channel never informs us of the onLightning fees they want to charge if we would receive funds by this channel.
An idea we want to consider is to simply send `channel_update` as soon as we lock in the channel:
https://github.com/ElementsProject/lightning/pull/1330#issuecomment-383931817
I want to ask the other LN implementations (lnd, eclair, ucoin, lit) if we should consider standardizing this behavior (i.e. send `channel_update`
after lockin regardless of published/unpublished state). It seems back-compatible: software which does not expect this behavior will simply drop the
`channel_update` (as they do not follow a `channel_announcement`).
In any case, what was the intended way to get the onLightning fee rates to put
into invoice `r` fields for private routes?
Regards,
ZmnSCPxj
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//株式会社Nayuta
// 上野 寛(Hiroshi Ueno)
// email: [email protected]
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