@Override
    public void run() {  // SERVER
        try {
            System.setProperty("javax.net.ssl.keyStore", "keyFile");
            System.setProperty("javax.net.ssl.keyStorePassword", "123456");

            SSLServerSocketFactory sslserversocketfactory =
                    (SSLServerSocketFactory) SSLServerSocketFactory.getDefault();
            SSLServerSocket sslServerSocket =
                    (SSLServerSocket) sslserversocketfactory.createServerSocket(4456);
            SSLSocket sslSocket = (SSLSocket) sslServerSocket.accept();

            InputStream streamFromProxy = sslSocket.getInputStream();

            panel.append(verzenderId + "\n");
            final byte[] request = new byte[1024];
            int bytesRead;
            while ((bytesRead = streamFromProxy.read(request)) != -1) {
                panel.append(new String(request) + "\n");
            }
            panel.append("\n");

            streamFromProxy.close();
            sslSocket.close();
            sslServerSocket.close();

        } catch (Exception ex) {
            ex.printStackTrace();
        }
    }