[JDEV] Re: OOB filetransfer negotiation

[Jens Alfke]

On Tuesday, August 14, 2001, at 01:41 PM, Sebastiaan 'CBAS' Deckers 
wrote:

> Or you could do the same thing that just about every P2P filesharing
> protocol known to man does:
> Step 1: ask for the non-firewalled user's IP and an opened port
> Step 2: the firewalled user uploads the file directly to that port and 
> IP

How does the negotiation work to determine which (if any) side is not 
firewalled?

> Btw,  Using a third party server (WebDav, FTP or some sort of relay) 
> seems
> like madness to me. Who would let people suck up all that bandwidth?

You seem to be assuming there will be one global server for everyone, 
which I agree doesn't make sense. But just about anyone with an account 
at an ISP has their own FTP area with at least 5MB of space. (You pretty 
much have to have this, or WebDAV, to be able to host a web page, which 
is a feature of all but the most basic ISP accounts.) So nearly everyone 
has access to such a server. The problem is that you have to configure 
your Jabber client by giving it the correct protocol and address, which 
is a hassle.

--Jens
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