Re: [ppsp] I-D Action: draft-ietf-ppsp-base-tracker-protocol-00.txt

Hi Arno,

About the number of peers to be returned, one may specify optional PeerNUM.

About the option you mention about request a random sample of peer
population, I think this could be defined in one extended version of
tracker protocol. For instance, to the PeerNUM element, it could be
specified a "selector" attribute with the key of one of acceptable
selectors by tracker implementation, such as a "random" key.

Using CONNECT message sample
http://tools.ietf.org/html/draft-ietf-ppsp-base-tracker-protocol-00#section-4.1,
a connect message could be:

<?xml version="1.0" encoding="UTF-8"?>
<PPSPTrackerProtocol xmlns="TBD" schemaLocation="TBD" version="1.2">
  <Request>CONNECT</Request>
  <PeerID>656164657220</PeerID>
  <PeerNum abilityNAT="STUN" selector="random">15</PeerNum>
  <SwarmID action="JOIN" peerMode="SEED"
           transactionID="12345.1">1111</SwarmID>
  <SwarmID action="JOIN" peerMode="SEED"
           transactionID="12345.2">2222</SwarmID>
  <TransactionID>12345.0</TransactionID>
</PPSPTrackerProtocol>

Best Regards

On Tue, Feb 19, 2013 at 10:59 AM, Arno Bakker <arno@cs.vu.nl> wrote:

> Hi all
>
> good that the tracker protocol is now in a WG document. Reading it again I
> really would like to have an option to specify that I want the tracker to
> return a random sample of the peer population of a swarm. Rui previously
> argued (mail dd. 13-11-2012) that it is an implementation issue, but I
> think users must be able to ask for specific semantics, just like they can
> select the number of peers to be returned, etc.
>
> What do you think?
>
> CU,
>     Arno
>
>
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