Date: Thu, 16 Jun 2005 05:37:18 -0700 From: Frank Mayhar <fmayhar@gmail.com> To: Marcin Jessa <lists@yazzy.org> Cc: FreeBSD-net <freebsd-net@freebsd.org>, FreeBSD-Current <current@freebsd.org> Subject: Re: Looking for networking solution. Message-ID: <1118925438.91936.2.camel@realtime.exit.com> In-Reply-To: <20050615114556.6df96e8c.lists@yazzy.org> References: <20050615114556.6df96e8c.lists@yazzy.org>
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On Wed, 2005-06-15 at 11:45 +0200, Marcin Jessa wrote: > I am looking for solution I could implement on a link with a huge latency when ping replies can go up to a few hundred miliseconds, e.g sateliete links. > What I was thinking about is some kind of virtual interface which could translate tcp to udp in one of the pears of the link and push the data it received from a 'normal' interface through the virtual interface without bothering about ack-timing. > The receiving end would have a similar interface which would translate the udp data stream to tcp and then route it out to the internet. > (normal network)tcp<-->virtual udp interface<-------->virtual udp interface<-->tcp(normal network) > > Is there something avaliable on FreeBSD that can be used for that purpose? > Maybe someone is working on such a thing in CURRENT ? > Any thoughts about that? Any sugestions for a solution? You want SCPS (the Space Communications Protocols Specification) software. Briefly, it fakes local TCP on either end while talking its own protocol over the high-latency link. I don't know if there is any open-source package available but there are certainly commercial solutions out there. -- Frank Mayhar frank@exit.com http://www.exit.com/ Exit Consulting http://www.gpsclock.com/ http://www.exit.com/blog/frank/
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