Getting a 401 error code when using OAuth with Reddit

Question

I keep getting {"error" : 401} when trying to OAuth into Reddit on ruby using the oauth2 gem. The wiki page says that this is because of incorrect or non-existent credentials but I'm positive I have the correct ones:

require "oauth2"
require "base64"

reddit = OAuth2::Client.new ENV["API_ID"], ENV["API_SECRET"], \
  :authorize_url => "https://ssl.reddit.com/api/v1/authorize",
  :token_url     => "https://ssl.reddit.com/api/v1/access_token",
  :site          => "https://oauth.reddit.com/api/v1/"

state = Digest::SHA1.hexdigest rand(36**8).to_s(36)
redirect_uri = "http://localhost:8080/oauth2/callback"

params = {"scope" => "identity",
          "response_type" => "code",
          "redirect_uri" => redirect_uri,
          "state" => state,
          "duration" => "permanent"
         }

puts reddit.auth_code.authorize_url params

# Get the url with the code that reddit redirects to
redir = gets.chomp.strip
code = redir.match(/code=([^&]*)/).captures
returned_state = redir.match(/state=([^&]*)/).captures
raise "State does not Match!" unless state === returned_state[0]

params = {"scope" => "identity",
          "redirect_uri" => redirect_uri,
          "state" => state
         }

token = reddit.auth_code.get_token(code[0], params, :headers => {'Authorization' => "Basic " + Base64.strict_encode64('#{ENV["API_ID"]}:#{ENV["API_SECRET"]}')})
response = token.get('me')
puts response

Answer 1

The site option for your Oauth2::Client should be 'https://ssl.reddit.com/api/v1/'. Check out the omniauth-reddit client options here https://github.com/jackdempsey/omniauth-reddit/blob/master/lib/omniauth/strategies/reddit.rb