title: Handling duplicate GET requests (caused by Trendmicro) in a Tomcat servlet
body: <p>What is the best strategy to deal with duplicate GET requests coming from the same client in an Apache Tomcat servlet?</p>
  
  <p>Basically, what I'm getting are 2 request a couple of seconds apart, the first from the client's real IP, the 2nd from a TrendMicro server (this appears to be the same effect as described <a href="https://security.stackexchange.com/questions/39616/odd-duplicate-http-requests">here</a>.</p>
  
  <p>Now my servlet faithfully serves both requests but produces problems later on (because it calls another remote service which most likely cannot deal with this situation either).</p>
  
  <p>So the question is, how can I block the 2nd request? Or is there any other strategy to address this issue?</p>
  
  <p>Thanks!</p>