From pm+lists at acinq.fr  Mon Oct  8 11:22:37 2018
From: pm+lists at acinq.fr (Pierre)
Date: Mon, 8 Oct 2018 13:22:37 +0200
Subject: [Lightning-dev] RouteBoost: Adding 'r=' fields to BOLT 11
 invoices to flag capacity
In-Reply-To: <87r2h1m318.fsf@rustcorp.com.au>
References: <877ejg9avy.fsf@rustcorp.com.au>
	<504b31cc-fcb9-f433-32e9-00de9456461b@mattcorallo.com>
	<87r2h1m318.fsf@rustcorp.com.au>
Message-ID: <CAMXsxZNz2sJ=4PYn=15Cgmtnc4DxTa9HW+U2U5pN=QA1_OQr4g@mail.gmail.com>

> But there's no reason to believe that the invoicer has more knowledge about all but the last hop.

I disagree: there is a good chance that the receiver is a 24/7 running
merchant/website, with a full up-to-date view of the network, whereas
the payer is most likely a mobile wallet with less
accurate/partial/out of date information.

At least this is what we are seeing on the current mainnet. Routing
table sync is hard on mobile clients, and I think that it makes sense
that receivers "help" senders, after all incentives are aligned.

Cheers,

Pierre