Ruby equivalent for setting HTTP GET headers

Question

In C# it was fairly simple and didn't take more than a couple minutes to google:

HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(@"http://www.example.com?q=someValue");
request.Headers.Add("Authorization: OAuth realm=\"example.com\" oauth_consumer_key=\"BCqrstoO\" ... so on and so forth");
string resultString = "";
using (StreamReader read = new StreamReader(request.GetResponse().GetResponseStream(), true))
{
    resultString = read.ReadToEnd();
}

Trying to do it in Ruby hasn't quite been as straight forward (or is just something stupid that I'm missing). I have been looking and the closest things I've come to finding my answer are How to make an HTTP GET with modified headers? and Send Custom Headers in Ruby.

So my problem, I suppose, boils down to

How do I set the headers as just a just a straight forward string?
Why do these two examples show headers formatted the way they are?
Is what I'm asking for even good convention and if not, how do I format what I'm trying to do in the convention these Ruby methods are asking for?

So far I tried the two examples and here's my most recent non-working attempt:

headers = "Authorization: OAuth realm=\"example.com\" oauth_consumer_key=\"BCqrstoO\" ... so on and so forth" 
uri = URI("www.example.com")
http = Net::HTTP.new(uri.host, uri.port)

http.get(uri.path, headers) do |chunk|
  puts chunk
end

May help if you remove the C# tag and just ask about adding headers to an HTTP request in Ruby. In an HTTP request, headers are just key/value pairs separated by a colon. So in your example the key is 'Authorization' and the value mapped to that key is all the stuff to the right. — Despertar
– Despertar, Commented Dec 15, 2012 at 4:53
What have you tried? Or, at least, what is the code you're currently using to make the request? — Andrew Marshall
– Andrew Marshall, Commented Dec 15, 2012 at 4:55
@Despertar So essentially all I need need to set it in this fashion: 'Authorization' => 'OAuth realm=\"example.com\" oauth_consumer_key=\"BCqrstoO\" ... so on and so forth' ? — Nikole
– Nikole, Commented Dec 15, 2012 at 5:01
@PaulBakerSaltShaker Yep, that looks good. Diego's example below should be spot on what you are looking to do. You can add whatever key/value pairs you need to, such as the oauth one you are using. — Despertar
– Despertar, Commented Dec 15, 2012 at 7:13

Diego Basch · Accepted Answer · 2012-12-15 06:17:16Z

5

Use open-uri. Example:

require 'open-uri'

open("http://www.ruby-lang.org/en/",
    "User-Agent" => "Ruby/#{RUBY_VERSION}",
    "From" => "[email protected]",
    "Referer" => "http://www.ruby-lang.org/") {|f|
    # ...
  }

answered Dec 15, 2012 at 6:17

Diego Basch

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Miyamoto Akira · Accepted Answer · 2017-05-18 11:18:11Z

3

Just in case you check this at this point on time, the Net:HTTPRequest object allows you to add headers easily.

Net::HTTP.start(uri.host, uri.port) do |http|
    request = Net::HTTP::Get.new uri
    request['my-header'] = '1'
    http.request request do |response|
        puts response
    end
end

answered May 18, 2017 at 11:18

Miyamoto Akira

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1 Comment

Aaron Thomas Over a year ago

more info on this, and examples, at ruby-doc.org/stdlib-2.4.2/libdoc/net/http/rdoc/Net/HTTP.html

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