Re: HTTP speed much lower than FTP speed for same file

From: Phillip Windell (_at_.)
Date: 06/30/04 

Date: Wed, 30 Jun 2004 09:37:02 -0500

When doing FTP with HTTP, the HTTP encapsulates a special form of
"read-only/download-only" FTP inside the HTTP packet. This is why when
running FTP with a browser using a "CERN Compliant HTTP Proxy" you are only
able to download and not upload.

Most browser uploads are done with "components". There is a "non-component"
ASP based upload but the scripting for it is very extensive. Samples of
that can be found by using "ASP Upload" in a search engine of your choice.

So HTTP has a higher overhead when doing this than with the "real"
Winsock-based (Sockets-based with Unix/Linux/Mac) FTP. 

-- 
Phillip Windell [MCP, MVP, CCNA]
www.wandtv.com
"H. Debs" <no@spam.com> wrote in message
news:eFWK$SmXEHA.2972@tk2msftngp13.phx.gbl...
> Downloading a certain file from a certain server via FTP gives a
> relatively smooth download speed curve which stays at max bandwidth
> while the download lasts.  Doing the same thing via HTTP from the same
> site with the same file produces a speed curve which zigzags, giving
> an average download speed which is 3 to 4 times slower.
> I've tried uninstalling and resinstalling tcp/ip to reset parameters
> to defaults, uninstalling the NIC device, using tcp parameter and MTU
> optimizers... but nothing seems to correct this problem.
> Anyone knows where this is coming from?
>
> Thanks.
>
> Habib
>
>

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