[Standards] XEP-0065: SOCKS5 acknowledgement after stream activation

Jakob Schroeter js at camaya.net
Tue May 1 10:47:41 UTC 2007


Hi,

On Tue May 1 2007, Justin Karneges wrote:
> On Monday 30 April 2007 3:37 pm, Jakob Schroeter wrote:
> > However, it seems this is not inline with the SOCKS5 spec[1], e.g.
> > immediately after the proxy acknowledged the connection to the target
> > (Section 4.6 in XEP-0065) the stream is ready to be used as far as SOCKS5
> > is concerned. So calling this a 'SOCKS5 acknowledgement' is wrong, IMHO.
>
> You're right, this looks like a goof.  Example 19 and the text above it
> should be removed I think, although I have not double-checked with my own
> code.
>
> > Further, it appears neither of the clients I tested against
> > (Iris/Kopete/Psi, Gajim, Tkabber) nor proxy65 are sending or expecting
> > such additional byte/s (if it were SOCKS5, it'd be at least two bytes:
> > X'05', X'00').
>
> The SOCKS5 snippets in the XEP use a short-hand, they do not describe
> entire packets.  I believe the "STATUS = X'00'" refers to the entire
> response packet, and that is just the only field we care about.  E.g. this
> would have been the same as the meaning of Example 15.
>
> > Is this a left-over from an earlier revision? Would peeple be interested
> > in a (in-band?) stream-active notification from stream host to target?
>
> For what purpose?

A simple file retrieval protocol could use it, similar to the good old 'fax 
polling'. Anyway, I was just wondering about this when implementing 0065, and 
it'd be fine with me if Example 19 would be removed as you proposed.

Regards,
Jakob
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