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Re: No User-Agent header found! Please identify your software properly by providing the HTTP User-Agent string.

From: Jukka K. Korpela <jkorpela@cs.tut.fi>
Date: Tue, 24 Sep 2013 20:30:41 +0300
Message-ID: <5241CC41.6010106@cs.tut.fi>
To: Omo Sunory <ez7x@privatdemail.net>
CC: www-validator@w3.org
2013-09-22 8:02, Omo Sunory wrote:

> "No User-Agent header found! Please identify your software properly
> by providing the HTTP User-Agent string."
>
> Why should I do it? You should not care about the HTTP User-Agent
> string! Make your website accessible without a HTTP User-Agent
> string!

Maybe you should do it, because the protocol tells you to:

"User agents SHOULD include this field with requests."
   http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.43

The meaning of SHOULD is defined in BCP 14:

"This word, or the adjective "RECOMMENDED", mean that there
may exist valid reasons in particular circumstances to ignore a
particular item, but the full implications must be understood and
carefully weighed before choosing a different course."
   http://www.ietf.org/rfc/rfc2119.txt

You have the liberty of being protocol-ignorant, but you should not 
blame a free public service for informing you about his.

Yucca
Received on Tuesday, 24 September 2013 17:31:14 UTC

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