src/main/java/org/apache/log4j/net/JsonReceiver.java [62:84]:
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        doShutdown();
    }

    /**
     * Does the actual shutting down by closing the server socket
     * and any connected sockets that have been created.
     */
    private synchronized void doShutdown() {
        active = false;

        logger.debug("{} doShutdown called", getName());

        // close the server socket
        closeServerSocket();
    }

    /**
     * Closes the server socket, if created.
     */
    private void closeServerSocket() {
        logger.debug("{} closing server socket", getName());

        try {
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src/main/java/org/apache/log4j/net/XMLSocketReceiver.java [128:150]:
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        doShutdown();
    }

    /**
     * Does the actual shutting down by closing the server socket
     * and any connected sockets that have been created.
     */
    private synchronized void doShutdown() {
        active = false;

        logger.debug("{} doShutdown called", getName());

        // close the server socket
        closeServerSocket();
    }

    /**
     * Closes the server socket, if created.
     */
    private void closeServerSocket() {
        logger.debug("{} closing server socket", getName());

        try {
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