Our 10-bit length means up to 1023 5-bit words, or 639 bytes. But `h`
is horribly underspecified since we don't have a general solution: using
a URL is a privacy problem, for example. It might make sense for a future
transport standard (eg. lightning over HTML, or lightning-over-NFC), but
it's fairly unusable at the moment.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
I'm clearly showing my age, suggesting ASCII; obviously UTF-8 makes
more sense. We also didn't have a *requirement* that it be a valid
encoding, so add that.
We already have an example ASCII description ('Please consider
supporting this project'), so just modify the other one to UTF-8
as provided by Jonathan.
Reported-by: Jonathan Underwood <junderwood@bitcoinbank.co.jp>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
As agreed at the previous meeting, we use the timestamp to prune,
so it does have to be a valid timestamp. We also suggest ignoring
if it's in the far future, too.
The minutes suggest we can prune for any reason, and that's really
true anyway; the requirements to keep it around are only SHOULD.
Note that this only applies to channel_update: node_announces
are not pruned (except, perhaps, by implication when all channels
are pruned)
Closes: #302
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
It misrenders on GitHub. Matt had a patch which changed the actual
form of the requiremnt, this uses ``` instead.
Based-on-Patch-By: Matt Corallo @TheBlueMatt
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This is a consequence of commit d1fbfd30f8: we now only use *outgoing* `channel_update` messages to build a route.
Basically the node publishing the `channel_update` says: I can only send htlcs > `htlc_minimum_msat` through this channel.
I think this is consistent with the current definition of the `amount_below_minimum` error (BOLT 4):
> If the HTLC does not reach the current minimum amount, we tell them the amount of the incoming HTLC and the current channel setting for the outgoing channel:
I regularized the descriptions in the localfeatures table, so keep a careful eye on the accuracy of those. Otherwise, fairly standard editing in this very short section.
Added text for lack of globalfeatures flags.
