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RE: Using Chunked encoding to send control messages to a client

From: Miles Sabin <msabin@cromwellmedia.co.uk>
Date: Fri, 5 May 2000 16:54:24 +0100
Message-ID: <43C2F98D8414D411865A00508BC22AB908CB0A@odin.cromwellmedia.co.uk>
To: http-wg@hplb.hpl.hp.com
kugler@us.ibm.com wrote,
> The issue that always gets raised when this kind of thing 
> comes up is this:  an HTTP proxy is allowed to buffer the 
> response and remove the chunked encoding, sending monolithic 
> response to the client.  With the multipart encoding, you 
> could still pick apart the response, but now the timing would
> be much different (you'd get all parts of the response at 
> once).

That's one problem.

Another, which affects both chunked transfer encoding and the
multipart technique, is that a proxy is at liberty to set quite
a short idle-timeout (say 30 secs to a couple of minutes) to 
protect itself from hung origin servers and double-sided DOS 
attacks (malicious client on one side, malicious server on the



Miles Sabin                       Cromwell Media
Internet Systems Architect        5/6 Glenthorne Mews
+44 (0)20 8817 4030               London, W6 0LJ, England
msabin@cromwellmedia.com          http://www.cromwellmedia.com/
Received on Friday, 5 May 2000 16:53:15 UTC

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