Date: Fri, 05 Nov 2004 17:46:12 +0100 From: Andre Oppermann <andre@freebsd.org> To: Karim Fodil-Lemelin <kfl@xiphos.ca> Cc: freebsd-arch@freebsd.org Subject: Re: Removing T/TCP and replacing it with something simpler Message-ID: <418BAE54.72E4208F@freebsd.org> References: <EKENLNBIDBAHKIELDLPNMELCCEAA.matt@genesi.co.uk> <418BB008.6040907@xiphos.ca>
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Karim Fodil-Lemelin wrote: > > Now, > > I have a question. In our application which can be described as: > > Client ----> (Client Gateway) -------> SATLINK ------> (Server Gateway) > -----> Internet > > We act as the Internet servers (transparent proxies) and therefore T/TCP > traffic is only sent over the SATLINK. In the current T/TCP > implementation the sender has to send a ccnew option to discover that > the server side supports T/TCP. Now we had to modify this so the > gateways uses the knowledge that they work together and they don't need > to send a ccnew option everytime a client makes a connection to a new > server. > > My question is: In the new implementation does the cookie will be > generated per machine or like the tao mecanism will it be based on a src > / dst tuple? The new cookie system will use the src-host/dst-host tuple. The first tcp connection between two hosts (port numbers are irrelevant) is a normal three-way handshake and the cookie is exchanged. From then on it skips over 3WHS on the server if the cookie matches. -- Andre > Regards. > > Matt Sealey wrote: > > >His product looks like it's the the product mentioned in the original post by > >the original poster; > > > >http://docs.freebsd.org/cgi/getmsg.cgi?fetch=284774+0+/usr/local/www/db/text/2004/freebsd-net/20041024.freebsd-net > > > >QUOTE: > > > >However something like T/TCP is certainly useful and I know of one special > >purpose application using it (Web Proxy Server/Client for high-delay Satellite > >connections). > > > >As long as they can live with FreeBSD 5.3 I don't think it causes a problem > >whatsoever does it? > > > > > > > Right, Actually we are based on FBSD 4.9 and we are planning to port to > 5.3 as soon as it gets stable, which could be anytime soon ;). > > -- > Karim Fodil-Lemelin > Lead Programmer > > Xiphos Technologies Inc. > (514) 848-9640 x223 > (514) 848-9644 fax > www.xiplink.com > > -------------------------------------------------------------- > The information transmitted is intended only for the > person or entity to which it is addressed and may contain > confidential and/or privileged material. If you have > received this in error, please contact the sender and delete > this communication and any copy immediately. Thank you.
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