[bittorrent] Changing Allowed Fast meaning ?

Alan McGovern alan.mcgovern at gmail.com
Thu Sep 6 12:15:49 EDT 2007

Not every peer knows it's external public facing IP address or has an easy
way to access that, so that would make it impossible to generate their own
fast-pieces set.


On 9/6/07, tiennou <tiennou7 at gmail.com> wrote:
> Hi !
> As I'm proof-reading my code on Fast Peers, questions rose in my
> mind (again ;-)) regarding the Fast Peers Extension and its ALLOW-FAST
> message :
> The spec says that the message contains an index corresponding to an
> allowed fast piece.
> The allowed fast set generation algorithm "*produces piece indices unique
> to the message receiver*".
> I'm now wondering that for any peer I connect to, I already know
> everything needed to generate its allowed set (and even mine when I started
> the torrent), I only lack one thing, the number of fast allowed pieces (k in
> the spec)...
> This mean the ALLOW-FAST message could be changed to include the allowed
> set size of the peer instead of the allowed piece info, so that a peer can
> calculate another peer fast allowed set.
> What do you think of this ?
> Etienne
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