Amal Kumar S Amal Kumar S - 2 years ago 108
Ruby Question

How to get only the response code from a HTTP Request in Ruby

I have a list of urls, I need to check which of the following urls are valid.

The code I used is

require 'net/http'

url = ''
res = Net::HTTP.get_response(URI.parse(url.to_s))
puts res.code

Here I can check the response code 200 for a valid url. My concern is the 'res' object returned contains code, body, etc. So my response (res object) becomes heavy. Is there any way so that I can get only the response code. I don't need any other info. Please help

Answer Source

I didn't check if it's possible to do with Net::HTTP, but you can use Curb, which is the Ruby wrapper for curl. Look at Curl::Easy#http_head

With Net::HTTP you can also use HTTP#head, which requests headers from the server using the HEAD method.

Information about HTTP's method HEAD:

9.4 HEAD

The HEAD method is identical to GET except that the server MUST NOT return a message-body in the response. The metainformation contained in the HTTP headers in response to a HEAD request SHOULD be identical to the information sent in response to a GET request. This method can be used for obtaining metainformation about the entity implied by the request without transferring the entity-body itself. This method is often used for testing hypertext links for validity, accessibility, and recent modification.

To get the response code of a page:

require 'net/http'
response = nil
Net::HTTP.start('', 80) {|http|
  response = http.head('/page.html')
puts response.code
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