[bittorrent] Use of reserved bits in bt handshake

Olaf van der Spek olafvdspek at gmail.com
Thu Jul 21 10:03:45 EDT 2005

On 7/21/05, Justin Cormack <justin at street-vision.com> wrote:
> I came across a client today that sets the first bit in the 8 zero
> bytes in the handshake after 'BitTorrent Protocol'. Anyone know what
> client this might be and what it might mean?

Looked at the peer ID?
Azureus uses -AZ IIRC.
> I think it *might* be Azureus, as I think it is the seed for Sun's
> OpenSolaris torrents.
> It is of course a completely useless way of specifying protocol
> extensions as it doesnt allow for any negotiation, all you can do is

Is it?
If the other party doesn't support your extensions, don't enable them.

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