title: Tomcat stops responding to Apache
body: <p>I'm trying to resolve an issue about connecting Apache and Tomcat with mod_proxy_ajp. In my case, the Tomcat stops to response the Apache, and the apache log prints logs error message like this: </p>
  
  <pre><code>[Mon May 06 15:22:47 2013] [error] ajp_read_header: ajp_ilink_receive failed
  [Mon May 06 15:22:47 2013] [error] (120006)APR does not understand this error code: proxy: read response failed from [::1]:18009 (localhost)
  </code></pre>
  
  <p>I have no idea. Anyone can help me?</p>