On Fri, Aug 16, 2013 at 05:11:35PM +0200, Mike Hearn wrote: > On Fri, Aug 16, 2013 at 4:59 PM, Peter Todd <p...@petertodd.org> wrote: > > > UPNP seems to work well for the reference client. What's the situation > > there on Android? > > > > Not sure - it could be investigated. I think UPNP is an entirely > userspace-implementable protocol, so in theory it could be done by a > userspace library (even libminiupnp - java is not a requirement on android)
Do find out. > > I leave my phone plugged in and connected via wifi for most of the day; > > lots of people do that. > > > > I suspect you mean "I think lots of people do that". I'm not so sure. We > could potentially run an experiment in the Android app to measure how many > users are in a position to contribute back, but just because you have wifi > doesn't mean you can reconfigure it using UPnP. That helps a lot in home > networks, but at the office it doesn't help. Also worth finding out. > I'm wary of a ton of work being put in to achieve not very much here. > Satoshi's original vision was always that millions of users were supported > by 100,000 or so nodes. I don't think that's unreasonable over the long > term. Appeal to authority. Stop bringing up Satoshi's "vision" - our understanding of crypto-currencies has improved in the 4.5 years since Bitcoin was released. Satoshi didn't even forsee pool mining, which says a lot about his economic judgement. > Besides, prioritisation isn't very hard. Nodes can just hand clients a > signed timestamp which they remember. When re-connecting, the signed > timestamp is handed back to the node and it gives priority to those with > old timestamps. No state is required on the node side. Signing and checking > can be passed onto the general ECDSA thread pool that works its way through > pending signature operations, they'd be prioritised lower than checking > blocks/broadcasts. Right, so you're giving priority to peers that have been around for awhile. You've succeeded in forcing attackers to wait a bit. A) What's the definition of a peer? What stops me from pretending to be 100 peers? B) Given an attacker willing to wait, what's your plan? -- 'peter'[:-1]@petertodd.org 000000000000004a52a297d9ae8ecde2ba62b681cc5a4cfbf7636032fc78e7d0
signature.asc
Description: Digital signature
------------------------------------------------------------------------------ Get 100% visibility into Java/.NET code with AppDynamics Lite! It's a free troubleshooting tool designed for production. Get down to code-level detail for bottlenecks, with <2% overhead. Download for free and get started troubleshooting in minutes. http://pubads.g.doubleclick.net/gampad/clk?id=48897031&iu=/4140/ostg.clktrk
_______________________________________________ Bitcoin-development mailing list Bitcoin-development@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bitcoin-development
