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Thread: Free up port(s)

  1. #1
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    Default Free up port(s)

    Hello everybody,

    anybody could say me how to free up a port (for instance 8088) which is used by other user (in other Windows 7 session in same computer).
    The trouble is that I have a java application in both sessions, but the port in which the app is listening is same, so after the have been ocuped by the first user, the second one can not use it because it is not free.

    I would need a code.

    My first idea was kill the app of the first user, but from the other session in impossible to kill process of the first one. Thats why now I am thinking about just to free up the port when the app take control in whatever session/user...

    Any idea??

    Thank you in advance


  2. #2
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    Default Re: Free up port(s)

    It could be feasible get the socket (which is using the port) from the port number (is the only info I have), and then close the socket and unbind/free up the port?

    What about this?

  3. #3
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    Default Re: Free up port(s)

    Hello again,

    I got a method to manage the case in which the user logoff the computer. It is using addShutdownHook(). An example:


    Runtime.getRuntime().addShutdownHook(new Thread() {
    @Override
    public void run() {
    System.out.println("Inside Add Shutdown Hook");
    }
    });

    It works really good.

    For the moment I have absolutely no idea how manage the user switching. Just needed a listener or a handle of users switchings!! But I dont find anything!!!!

    --- Update ---

    If I get a way to manage when a switch/wakeup/hibernate, etc takes place I could close the port and open again with the other user....I mean, at the end is same that free up the port...

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