Linkedin Ruby Gem (Token Rejected in Callback)

Question

I used the LinkedIn Ruby Gem and had a problem. Here is the result of my rails server.

Started GET "/session/callback?oauth_token=618b3bc2-d8f6-4c9c-99a2-10573c8b3c3c&oauth_verifier=09858" for 127.0.0.1 at Tue Jun 12 19:14:11 -0700 2012 Processing by SessionController#callback as HTML Parameters: {"oauth_verifier"=>"09858", "oauth_token"=>"618b3bc2-d8f6-4c9c-99a2-10573c8b3c3c"} Completed 500 Internal Server Error in 163ms OAuth::Problem (token_rejected): app/controllers/session_controller.rb:28:in `callback' Rendered /Library/Ruby/Gems/1.8/gems/actionpack-3.2.3/lib/action_dispatch/middleware/templates/rescues/_trace.erb (1.2ms) Rendered /Library/Ruby/Gems/1.8/gems/actionpack-3.2.3/lib/action_dispatch/middleware/templates/rescues/_request_and_response.erb (1.0ms) Rendered /Library/Ruby/Gems/1.8/gems/actionpack-3.2.3/lib/action_dispatch/middleware/templates/rescues/diagnostics.erb within rescues/layout (12.9ms) 

Here is the code in my session_controller.rb:

 require 'linkedin' class SessionController < ApplicationController def login # get your api keys at https://www.linkedin.com/secure/developer client = LinkedIn::Client.new(APP_CONFIG['linkedin']['apikey'], APP_CONFIG['linkedin']['secret_key']) request_token = client.request_token(:oauth_callback => "http://#{request.host_with_port}/session/callback") session[:rtoken] = request_token.token session[:rsecret] = request_token.secret redirect_to client.request_token.authorize_url end def logout session[:atoken] = nil redirect_to :root end def callback client = LinkedIn::Client.new(APP_CONFIG['linkedin']['apikey'], APP_CONFIG['linkedin']['secret_key']) # "your_api_key", "your_secret") if session[:atoken].nil? pin = params[:oauth_verifier] atoken, asecret = client.authorize_from_request(session[:rtoken], session[:rsecret], pin) session[:atoken] = atoken session[:asecret] = asecret else client.authorize_from_access(session[:atoken], session[:asecret]) end redirect_to '/users/index' end end 

I also have random access issues, here are the errors for this:

 Access Denied You don't have permission to access "/D/16382/14334/000/origin.wwwapps.ups.com/uas/oauth/authorize?oauth_token=730c3a62-08ad-4ac2-9281-c9e67bb3a2d5" on this server. Reference #18.6fd054b8.1339554485.72cbb3 

Answer 1

Please note that this is the final answer to this question, but one thing that helped me during development was to clear my cache and cookies. Typically, this error occurs due to the presence of cookies set from a previous session that confuse the system and cause this error.