From ogunden at phauna.org Fri Oct 15 13:55:29 2021 From: ogunden at phauna.org (Owen Gunden) Date: Fri, 15 Oct 2021 13:55:29 +0000 Subject: [Lightning-dev] In-protocol liquidity probing and channel jamming mitigation In-Reply-To: References: Message-ID: <20211015135529.GA23013@jauntyelephant.191.37.198.vultr.com> On Thu, Oct 14, 2021 at 09:48:27AM +0200, Joost Jager wrote: > So how would things work out with a combination of both of the > proposals described in this mail? First we make probing free (free as > in no liquidity locked up) and then we'll require senders to pay for > failed payment attempts too. Failed payment attempts after a > successful probe should be extremely rate, so doesn't this fix the ux > issue with upfront fees? Why couldn't a malicious routing node (or group of colluding routing nodes) succeed the probe and then fail the payment in order to collect the failed payment fee?