title: several TCP-servers on the same port
body: <p>It looks very strange for me. I can run several TCP servers on the same port.</p>
  
  <p>I use Apache MINA library with following code:</p>
  
  <pre><code>IoAcceptor acceptor = new NioSocketAcceptor();
  acceptor.bind(new InetSocketAddress(80));
  </code></pre>
  
  <p>Port 80 is already used by another program. But I didn't get exception "Address already in use". With netstat I can see following:</p>
  
  <pre><code>C:\&gt;netstat -oan |find /i "LIST"
    TCP    0.0.0.0:80             0.0.0.0:0              LISTENING       2220
    TCP    0.0.0.0:80             0.0.0.0:0              LISTENING       904
    TCP    0.0.0.0:135            0.0.0.0:0              LISTENING       840
  </code></pre>
  
  <p>Could someone explain me such behaviour?</p>
  
  <p>OS: Windows 7.</p>
  
  <p>Thanks.</p>