title: "The target server failed to respond" with default Jmeter's implementation of HTTPSample
body: <p>I have following situation:<br>
  there is some Jmeter test. I run it from different locations. I get below error for some requests.</p>
  
  <blockquote>
    <p>org.apache.http.NoHttpResponseException', 'Non HTTP response message:
    The target server failed to respond'</p>
  </blockquote>
  
  <p>Error is not permanent, it happens from time to time.
  The weird thing here is that for some location this error happened and for some not.</p>
  
  <p>Jmeter configuration (jmeter.properties) is identical for all locations, however mentioned error occurred only for some of them.</p>
  
  <p>I've searched regarding that error and find a post about problem with HttpClient4 (which is default for HttpSampler implementation).
  When I change implementation to 'Java' - problem gone.</p>
  
  <p>However I can't understand why does the test works from one location and failed from another. Does somebody have any ideas regarding that? The only idea I have is some kind of firewall that has some connections limitation from some specific address.</p>
  
  <p>p.s. All URL that fails where accessible from all locations with the browser, if any.</p>