Well I have a fairly strong background in the entire OSI model - more specifically the layers you mention. A 1.5MB will definitely result in a larger download, but the actual size will depend on many things.
Most importantly - how it's being downloaded. (FTP/HTTP) etc. But to us (the application layer) we don't see those bytes, so some preloader etc would only see 1.5MB - and hence that information would be correct. I'm trying to figure out what is the motivation behind the question, it's actually very simple - not complex. (or at least - what is it you are asking). There are plenty of books, look at any Cisco Internetworking book and/or any networking book that covers metrics. If you are looking to pollute your mind with even more details, then please do not forget the fact that your NIC controller is going to have some collisions from time to time and depending on the size of the TCP window at that point, that information too will be lost. I'll be more than happy to answer any specific question if you like. Thanks - Fruber -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Martin Klasson Sent: Wednesday, November 02, 2005 1:32 AM To: Flashcoders mailing list Subject: [Flashcoders] packets and downloads Hi People. Some basic underlying facts should be needed about the I/P-protocol. When a file, as swf is for example 1.5 megabytes, is it really 1.5 that is downloaded. Or is it more really, since every packet, according to standard is 576, and 40 of them is the header. This would cause a thing so that you rethink some loading aspects in flash, as well as bandwidth-checking and streaming-loaders perhaps. Do you have found any great articles which take this into details? It should be very fun to get more-in-depth knowledge about this basic but yet VERY complex. / martin _______________________________________________ Flashcoders mailing list [email protected] http://chattyfig.figleaf.com/mailman/listinfo/flashcoders _______________________________________________ Flashcoders mailing list [email protected] http://chattyfig.figleaf.com/mailman/listinfo/flashcoders

