Good morning Joost, > A potential downside of a dedicated probe message is that it could be used > for free messaging on lightning by including additional data in the payload > for the recipient. Free messaging is already possible today via htlcs, but a > probe message would lower the cost to do so because the sender doesn't need > to lock up liquidity for it. This probably increases the spam potential. I am > wondering if it is possible to design the probe message so that it is useless > for anything other than probing. I guess it is hard because it would still > have that obfuscated 1300 bytes block with the remaining part of the route in > it and nodes can't see whether there is other meaningful data at the end.
For the probe, the onion max size does not *need* to be 1300, we could reduce the size to make it less useable for *remote* messaging. Regards, ZmnSCPxj _______________________________________________ Lightning-dev mailing list Lightning-dev@lists.linuxfoundation.org https://lists.linuxfoundation.org/mailman/listinfo/lightning-dev
