title: Error in open.connection(x, "rb") : Couldn't connect to server
body: <p>I receive the following error when attempting to use the <code>rvest</code> package in R:</p>
  
  <blockquote>
    <p>Error in open.connection(x, "rb") : Couldn't connect to server</p>
  </blockquote>
  
  <p>What is causing this error message?  The function is shown below:</p>
  
  <pre><code>htmlpage &lt;- read_html("http://forecast.weather.gov/MapClick.php?lat=42.27925753000045&amp;lon=-71.41616624299962#.V17UH-IrKHs")
  </code></pre>