Net::HTTP doesn't start downloading file after post request - ruby

Question

I am trying to make POST request with Net::HTTP to specific website, and start downloading file after response is returned.
I tested this first with wget, and it worked fine.I also tried with httpi and unirest gems and it went fine . However, because Net::HTTP is low-level API and I need more control(for example, tracking downloading progress), I'll stick with it.
The problem is, downloading just won't start.So here's the code:
require 'net/http'
require 'tempfile'
uri = URI.parse("http://mywebsite.com")
req = Net::HTTP::Post.new(uri.path)
req.set_form_data({'filed' => 'data'})
response = Net::HTTP.start(uri.hostname, uri.port) {|http|
http.request(req) do |response|
temp_file = Tempfile.new("new_file")
response.read_body do |chunk|
temp_file << chunk
end
end
}
I figured that the problem must be in response, what I get is not Net::HTTPOK
but HTTPSeeOther and here's more info about it
#<Net::HTTPSeeOther:0x91f2670>
{"server"=>["nginx"], "date"=>["Sat, 21 Dec 2013 22:32:14 GMT"],
"content-type"=>["text/html"], "transfer-encoding"=>["chunked"],
"connection"=>["keep-alive"], "pragma"=>["no-cache"],
"cache-control"=>["no-cache, must-revalidate"],
"expires"=>["Sat, 26 Jul 1997 05:00:00 GMT"],
"location"=>["http://mywebsite.com/path/to/file.rar"]}
The other 2 gems I mentioned knew how to start download automatically and I don't know what to do with HTTPSeeOther .

Answer 1

It appears that you're getting a redirect response from the server, which wget, curl, and high-level libraries will follow automatically. With Net::HTTP, you'll need to start a new GET request to that location.