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Re: [#95] Multiple Content-Lengths

From: Bjoern Hoehrmann <derhoermi@gmx.net>
Date: Wed, 22 Sep 2010 22:22:34 +0200
To: Julian Reschke <julian.reschke@gmx.de>
Cc: HTTP Working Group <ietf-http-wg@w3.org>
Message-ID: <kemk961dlvha5mcatsp94hhqeb5a4uj7th@hive.bjoern.hoehrmann.de>
* Julian Reschke wrote:
>Agreed, but it makes the spec more complex, and it's not sure whether 
>it's worth the special case (that's why statistical data would be useful).

Earlier this week I had http://cutycapt.sf.net/ load a bunch of URLs
(random selection of pages linked from the german Wikipedia, at most
three per host) resulting in about 125,000 requests. There was not a
single response with both Transfer-Encoding and Content-Length, or two
or more Content-Length headers, or Content-Length headers with any-
thing but digits and white space (especially no commas). Neither does
this happen for the Alexa 1000. Obviously this does not include certain
things like responses resulting from user interaction (say, posting to
a forum).

It's a lot harder these days to get webservers send out messages with
broken framing, thanks to improvements to script interpreters, web
servers, and the interfaces between them, than it was a few years ago.

(The usual strange things are included, like headers that end up as
a reason phrase in the status line of the response ala "HTTP/1.0 200
OKContent-Type: text/html; char..."; portugese appears to be the most
popular language second to english in the reason phrase by the way,
followed by german and serbian...)
Björn Höhrmann · mailto:bjoern@hoehrmann.de · http://bjoern.hoehrmann.de
Am Badedeich 7 · Telefon: +49(0)160/4415681 · http://www.bjoernsworld.de
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Received on Wednesday, 22 September 2010 20:49:52 UTC

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