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comp.lang.ruby

Download resume with NET::HTTP

Alex Dj

5/9/2008 2:19:00 PM

I'm wondering is there any way to do interrupt file download and then
resume it from the same spot?
The way I download file:

Net::HTTP.start("server.com") { |http|
response = http.request_get('/some/path') {|response|
file_length = response['Content-Length']
File.open('video.avi', 'w') {|f|
response.read_body do |str| # read body now
puts str.length
f.write str
end
}
}
}

I'm not using open-url as I found that open() method first downloads
whole file and then starts to write it. Not for me....

Cheers Alex
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2 Answers

Marcelo

5/9/2008 3:04:00 PM

0

On Fri, May 9, 2008 at 8:18 AM, Alex Dj <djioev@gmail.com> wrote:

> Net::HTTP.start("server.com") { |http|
> response = http.request_get('/some/path') {|response|

create your request by hand:

req = Net::HTTP::Get.new(path)
req.range = ...

In HTTP 1.1 range has the form "[lower]-[upper]", so "[lower]-" is
valid. I'm not sure what range= takes, you get to try it :-)

Marcelo

Alex Dj

5/9/2008 3:34:00 PM

0

Thanks Marcelo,

> In HTTP 1.1 range has the form "[lower]-[upper]", so "[lower]-" is
> valid. I'm not sure what range= takes, you get to try it :-)

I found that its "Range: bytes=10000-", something like this. I wonder if
I can use this header to download the same file from different mirrors
i.e. have several
req = Net::HTTP::Get.new(path)
but with different ranges and write them to the same file with random
access. Would it be a right technique for this idea?

Thanks Alex

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