If the web server support ranges, you should be able to add a HTTP header like 
Range: bytes=1-4096

[download]
to make it just return the first 4KB.

 - ask 

-- 
ask bjoern hansen, http://ask.netcetera.dk/   !try; do();

In reply to Re: How do I retrieve a piece of a file? by ask
in thread How do I retrieve a piece of a file? by jmarans

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