- From: Jon Crowcroft <J.Crowcroft@cs.ucl.ac.uk>
- Date: Sun, 16 Feb 1997 16:06:45 +0000
- To: Koen Holtman <koen@win.tue.nl>
- Cc: Luigi Rizzo <luigi@labinfo.iet.unipi.it>, http-wg <http-wg%cuckoo.hpl.hp.com@hplb.hpl.hp.com>, www-talk@www10.www3.org
>>I have a questions that is somewhat related to HTTP. What is the >>best, and cleanest, way to specify the reliable transport protocol >>(intended as Network Transport Protocol, e.g. TCP, something-above-UDP, >>etc.) used to transfer HTTP data ? >[....] >>If someone wonders why. Think of using a portable unit to browse, >>and have an asymmetrical channel, e.g. uplink via cellular phone, >>downlink is broadcast (e.g. using satellite or TV channels, much >>like teletext). >I think the above case is best configured as a gateway service for HTTP: > > user agent <--http--> special HTTP gateway service <--http--> origin > | | | | server > |---inside portable------| <-asym chan-> |-special--| > server >So the origin server sees a normal connection from a HTTP client. right - this is structurally nice basicalyl, leveraging off the proxy service at the edges of the problem network...- but say you MOVE from a place where this is a good mechanism, to being near (e.g. i am on a plane browsing over a slow uplink, but fast downlink, then i land and go to an office, while looking at same web content, where i have a 3Mbps IR link from the laptop to a terrestrial wideband net.... how does the proxy change what is doing (e.g. get out of the way!)?? >The parameters for the special gateway service would presumably be set in a >preferences window of the user agent, in the same way as a proxy can be set >now. yes, but that's far too static....i'd like it to autoconfigure... also, you need at least a syntax for specifying this even if its just preferences (though if you dewsign it righ,tr it could be part of tha autocoinfiguration client<-> proxy and proxy server gateway <-> real server auto set up...) so what should that syntax (and even protocol) look like? jon
Received on Sunday, 16 February 1997 08:12:49 UTC