title: How can i get the absolute url of route with symfony
body: <p>I am using symfony and I want to get the url of a specific <code>route</code> ,
  my <code>route</code> is like this </p>
  
  <pre><code>project_sign_in:
      pattern:  /signin
      defaults: { _controller: ProjectContactBundle:User:signIn }
  </code></pre>
  
  <p>i want to generate the url from this route so i can get </p>
  
  <p><code>localhost/app_dev.php/signin</code>
  or <code>{SERVER-ADDRESS}/app_dev/signin</code> </p>
  
  <p>if I was browsing the server.</p>