title: http - change request url?
body: <p>Is it possible to change the url of a HTTP-request without redirection?</p>
  
  <p>For example instead of:</p>
  
  <p><strong>request 1</strong></p>
  
  <pre><code>GET /user/abc123/ HTTP/1.1
  
  HTTP/1.1 301 Moved Permanently
  Location: /files/abc123
  </code></pre>
  
  <p><strong>request 2</strong></p>
  
  <pre><code>GET /files/abc123 HTTP/1.1
  
  HTTP/1.1 200 OK
  .
  .
  [filecontent]
  </code></pre>
  
  <p>I could could respond the file directly, but letting the client know that he got redirected:</p>
  
  <p><strong>single request</strong></p>
  
  <pre><code>GET /user/abc123/ HTTP/1.1
  
  HTTP/1.1 200 OK
  Location: /files/abc123
  .
  .
  [filecontent]
  </code></pre>