title: finding the download size of a URL (Content-Length)
body: <p>I'm looking for some objective-c code to query a URL and give the download size, similar to this example: <a href="https://stackoverflow.com/questions/657826/checking-download-size-before-download">Checking Download size before download</a></p>
  
  <p>but in objective-c, and using ASIHttp is OK.</p>