Code example for Socket

Methods: isClosed

        if (!(sock instanceof SSLSocket)) {
            throw new IllegalArgumentException
                ("Socket not created by this factory."); 
        // This check is performed last since it calls the argument object. 
        if (sock.isClosed()) {
            throw new IllegalArgumentException("Socket is closed.");
        return true; 
    } // isSecure 
    // non-javadoc, see interface LayeredSocketFactory 
    public Socket createSocket(
        final Socket socket,
        final String host,
        final int port,
        final boolean autoClose
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