From: Brian Candler <b.candler@...>
Date: 2010-12-21T03:10:15+09:00
Subject: Re: downloading a file

Rajinder Yadav wrote in post #969592:
>> Use wget [-c]
>
> ruby has a wget command? i want to do this from ruby code, and with no
> backquote either

I was thinking of:

    system("wget ....")

If you don't have wget on your system, I'm afraid I don't know of an 
existing Ruby library which does download-to-file with restarting of 
partial transfers.

You can cobble something together using Net::HTTP, but to do the 
restarts you'll have to use the set_range method to add the Range: 
header - see RFC 2616 section 14.35.

Note that old HTTP servers may ignore the Range: header, so you should 
check that the response content_range is what you asked for.

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