From igor at codexapertus.com Mon Apr 9 11:06:54 2018 From: igor at codexapertus.com (Igor Cota) Date: Mon, 9 Apr 2018 13:06:54 +0200 Subject: [Lightning-dev] QR of node information In-Reply-To: <03d3d021-326a-c918-7d77-7cd82f4bc4c8@bitonic.nl> References: <03d3d021-326a-c918-7d77-7cd82f4bc4c8@bitonic.nl> Message-ID: Hi all, On 9 April 2018 at 11:47, Corn? Plooy via Lightning-dev < lightning-dev at lists.linuxfoundation.org> wrote: > > Is this really only about reducing the size of QR codes? How many > percent reduction do you think you can accomplish with your approach? I > think, when it comes to reducing QR code size, it makes more sense to > think of a better way to encode the node ID. Hexadecimal isn't exactly > the most space-efficient encoding. > We'd save 33 bytes by not using hex. Makes the QR code a bit rarer (whatever is opposite of dense). I intend to support both approaches, if there are 33 bytes before the '@' it's raw, 66 it's hex. Igor > Op 07-04-18 om 17:17 schreef Robert Olsson: > > Hello all, > > > > I seem to not find a bolt regarding the QR code of node at ip:port > > > > It seems eclair only supports the format hex at ip:port format, and i > > haven't tried any other mobile wallets. > > > > I thought there would be support for bech32 nodeid:s to keep the QR > > small, but it doesn't seem that way. > > > > If it isn't standardized yet, i think we should do it soon so all > > wallets will support it from start and we can avoid bulky QR codes. > > > > To fully utilize QR it should work with charset in text-mode, so i > > would suggest a format like > > > > lightning:ln1bech32nodeid/ipnumber/port > > > > where /port is optional if port is 9735 > > > > this is to avoid @ and confusion of : in ipv6 and :portnumber > > (skip '[' and ']' in ipv6) > > > > another approach would be to encode ip and portnumber in bech32 as > > well. my opinion is that everything coded entirely in bech32 shouldn't > > need a protocol so the 'lightning:' part could possibly be omitted as > > well. > > > > or did i just miss a bolt somewhere? > > > > best regards > > Robert Olsson > > > > > > > > > > > > > > > > _______________________________________________ > > Lightning-dev mailing list > > Lightning-dev at lists.linuxfoundation.org > > https://lists.linuxfoundation.org/mailman/listinfo/lightning-dev > > > _______________________________________________ > Lightning-dev mailing list > Lightning-dev at lists.linuxfoundation.org > https://lists.linuxfoundation.org/mailman/listinfo/lightning-dev > -- *Igor Cota* Codex Apertus Ltd -------------- next part -------------- An HTML attachment was scrubbed... URL: