On Thu, Aug 16, 2012 at 1:56 PM, Pieter Wuille <pieter.wui...@gmail.com> wrote: > I suppose it is interesting in general for nodes to > get a memory pool refill at startup anyway.
Yes. >> An "inv" message is always returned, even if empty. > > I'm not sure about this last. What is it good for? inv packets can always be > sent, even not in response to others, so it is not that this gives you an > acknowledgement the mempool is updated? A simple guarantee of 1:1 correspondence between request and response. The bitcoin protocol sometimes simply elides a response when the response would be empty, and this makes it difficult to know whether a request is timing out or already processed. Sending a ping(nonce) after each P2P command is another way of achieving same :) > This seems safe, although it forces other full implementations that want to > expose protocol version 60002 (or later) to also implement this. What do they > think about this? > > I would like to suggest to allocate an extra service bit for this. We still > have 63 left, and this is a well-defined and useful extra service that was > not yet provided by any earlier node. Doing that would also mean that > mempool-providing survices may be discovered before connecting to them, as > the service bits are carried around in addr messages. Any opinions about that? An nServices bit would be a better fit for this optional service, but nServices bits seemed like a scarce resource, so I elected to be conservative. Absent the scarce-resource concern, I'd vote for an nServices bit. -- Jeff Garzik exMULTI, Inc. jgar...@exmulti.com ------------------------------------------------------------------------------ Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ _______________________________________________ Bitcoin-development mailing list Bitcoin-development@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bitcoin-development
