Why not just get people to use SOCKS5 ?? or similar instead of trying to reinvent the wheel as it were. If on a corporate LAN and there is a firewall with no SOCKS server then people probably shouldnt really be trying to bypass the company firewall anyway. If not then they need to pester the network manager to set up a SOCKS server to service the jabber clients.
----- Original Message ----- From: "Matthew A. Miller" <[EMAIL PROTECTED]> To: "JDEV Mailing List" <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]> Sent: Tuesday, July 23, 2002 7:51 PM Subject: Re: [JDEV] DSPS > The original intent of DSPS was to address the problems transferring > data to/from "firewalled" clients, without introducing new issues (as > with PASS). > > The current spec talks solely about components, although a "stand-alone" > server could be utilized. Also, although it is not by design, this > could handle direct connections, with one of the clients acting as a > DSPS "server" (for connection-handling only; I know I wouldn't want > someone trying to tell my client to create a DSPS connection for them > (-: ). This (a client-side DSPS "server") is something I've thought > about just recently, while looking at how we can "clean up" the current > specification. > > At its core, DSPS is fairly easy to support from a client (as others > have stated). Also, it's "required" functionality (which, I admit, is > not clearly differentiated from "optional" functionality) is not all > that difficult to implement, and (with modifications, or a new spec) > could be used in direct, P2P connections. > > Personally, I think a single "standardized" method of handling "data > connections" needs to be defined for Jabber, whether it be via DSPS, > PASS, or even modifications to the current OOB mechanism. Currently, I > can see DSPS as becoming an adequate, maybe even preferred, method of > doing this. > > This is my opinion, although your mileage (and opinions) may (most > likely) vary. > > > > On Tue, 2002-07-23 at 10:50, Ben Schumacher wrote: > (Cross-posting, cause I think it applies to both lists.) > > I agree, that using a stream layer separate from the file transfer would > be preferred, I just think we shouldn't rely on a server as a passthru in > all situations. Working around firewall issues is a problem that has been > solved by nearly every peer-to-peer network in existence, so I assume > there has to be a solution that will work for Jabber. In fact, by keeping > the stream layer separate, it should be possible to initiate the connect > from either side and then do a data transfer in either direction. This way > if I am behind a firewall, but the person I'm communicating with isn't, I > can open a connection to them and then push my data across. Perhaps the > DSPS spec should be expanded/altered to the point where it doesn't > necessarily imply that a proxy is necessary. > > Currently, the server doesn't have any knowledge of what a user's IP is > beyond socket creation, and I would guess that this will stay this way in > the open source implementation -- it is a privacy concern, after all. That > being said, however, it would be pretty easy to write something that would > have this information (a DSPS component?) available if it was necessary. > > Does any of this make sense? I'm just trying to avoid designing/developing > something that will not be used, because servers probably won't want to > take the extra bandwidth hit just to provide their users with the ability > to do file transfers. > > bs. > > On Tue, 23 Jul 2002, Justin Karneges wrote: > > The problem is that there is otherwise no real clean way to establish a direct > > connection. Everyone is behind a firewall these days. > > > > Maybe jabberd should support a way of getting your external IP address, so > > that there could be some sort of stream negotiation between two clients. As > > it stands, clients don't even know what their real external address is unless > > you were to specify it directly (not exactly user-friendly). > > > > The "stream" idea IMO makes more sense than just http URLs, because it implies > > more possibilities than just file transfer. It also keeps the stream > > handshake as a separate layer, which simplifies things when you consider the > > various possible methods of transport (TCP, DSPS, PASS, XML-thru-server??), > > SSL, reverse-connections, etc. I completely agree with Rob about keeping the > > stream layer _separate_ from the file transfer. > > > > DSPS is dead-easy to use from a client perspective. What we need is something > > similar to it, as a standard part of jabberd, that allows clients to ask for > > a stream to another JID. Something very simple like: "Oh, you want > > [EMAIL PROTECTED]/Home? Connect to this IP address." This might be through DSPS, > > or it might be direct, or whatever. I'm just saying, we need a simple way > > for clients to ask for a stream. DSPS seems to have a nice interface, but it > > assumes we want to route through an external point. Maybe the real solution > > is to have an even smarter component that will hook you up directly to the > > other person if possible, otherwise fall back to DSPS (all hiding this from > > the client). > > > > The current situation is not optimal. > > > > -Justin > > _______________________________________________ > jdev mailing list > [EMAIL PROTECTED] > http://mailman.jabber.org/listinfo/jdev > -- > > Matt "Linuxwolf" Miller > > - Got "JABBER"? (http://www.jabbercentral.org/) > > _______________________________________________ > jdev mailing list > [EMAIL PROTECTED] > http://mailman.jabber.org/listinfo/jdev > > _______________________________________________ jdev mailing list [EMAIL PROTECTED] http://mailman.jabber.org/listinfo/jdev
