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Re: Sherlock's User-Agent header

On Friday, December 13, 2002, at 11:39 AM, Jeff Adams wrote:

I noticed that it seems Sherlock's http requests use a User-Agent header of:

User-Agent: Mozilla/4.0 (compatible; MSIE 5.0; Mac_PowerPC)

If you do decide to roll your own User-Agent, perhaps the following format would work:

let $headers := dictionary (
("User-Agent", "Mozilla/5.0 (Macintosh; PPC Mac OS X; en-US) Sherlock/com.MyCompany.Search")
)

For example, Chimera (20021220 build) identifies as:

HTTP_USER_AGENT 'Mozilla/5.0 (Macintosh; U; PPC Mac OS X Mach-O; en-US; rv:1.0.1) Gecko/20021220 Chimera/0.6+'

Notice the use of Product Tokens to add finer granularity.

Whatever you do end up choosing, make sure the User-Agent conforms to the spec:

http://www.cis.ohio-state.edu/cgi-bin/rfc/rfc2616.html#sec-14.43

An example of a malformed UA string:

'Mac OS X; WebServices.framework (0.1d1)'

Depending on your choice of the UA, you may (rarely) end up receiving different content from sites. For added emphasis, you may want to include an "Accept" header in your requests, too:

("Accept", "text/xml,application/xml,application/xhtml+xml,text/html;q=0.5")

Cheers,

Jussi-Pekka
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 >Sherlock's User-Agent header (From: Jeff Adams <email@hidden>)



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