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POWhy does Jetty establish many connections when it starts up?
 

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  1. POWhy does Jetty establish many connections when it starts up?
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    <p>I've created a simple embedded jetty project based on the <a href="http://download.eclipse.org/jetty/stable-9/xref/org/eclipse/jetty/embedded/OneConnector.html" rel="nofollow">OneConnector</a> example.</p> <p>When I start the example I see one TCP connection in the listening state which I expected to see. There are also quite a few TCP connections in the established state.</p> <p>Why are they there, how come there are so many and what are they used for?</p> <p>In TCPView I see the following connections:</p> <pre><code>java.exe:14536 TCP my-pc:8080 my-pc.tfs.attix5.com:0 LISTENING java.exe:14536 TCP my-pc:56791 localhost:56792 ESTABLISHED java.exe:14536 TCP my-pc:56792 localhost:56791 ESTABLISHED java.exe:14536 TCP my-pc:56793 localhost:56794 ESTABLISHED java.exe:14536 TCP my-pc:56794 localhost:56793 ESTABLISHED java.exe:14536 TCP my-pc:56795 localhost:56796 ESTABLISHED java.exe:14536 TCP my-pc:56796 localhost:56795 ESTABLISHED java.exe:14536 TCP my-pc:56797 localhost:56798 ESTABLISHED java.exe:14536 TCP my-pc:56798 localhost:56797 ESTABLISHED java.exe:14536 TCP my-pc:56799 localhost:56800 ESTABLISHED java.exe:14536 TCP my-pc:56800 localhost:56799 ESTABLISHED java.exe:14536 TCP my-pc:56801 localhost:56802 ESTABLISHED java.exe:14536 TCP my-pc:56802 localhost:56801 ESTABLISHED java.exe:14536 TCP my-pc:56803 localhost:56804 ESTABLISHED java.exe:14536 TCP my-pc:56804 localhost:56803 ESTABLISHED java.exe:14536 TCP my-pc:56805 localhost:56806 ESTABLISHED java.exe:14536 TCP my-pc:56806 localhost:56805 ESTABLISHED </code></pre>
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    1. USChristo
    1. USChristo
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      1. VTUpMod
    1. COdo you have 8 CPUs?
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      1. USZhongYu
    2. COYes I do. You're thinking one connection pair per thread?
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      1. USChristo
    3. COit's possible that 8 Selectors are created; for each selector, a socket is established for the purpose of wakeup()
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      1. USZhongYu
 

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