public String CallSocket(String host,Integer port,String request,String charset) {
        StringBuffer result = new StringBuffer();
        try {
            Socket client = new Socket(host, port);
            client.setSoTimeout(10000);
            PrintStream out = new PrintStream(client.getOutputStream());
            BufferedReader in = new BufferedReader(new InputStreamReader(client.getInputStream(), charset));
            out.println(request);
            try {
                while (true) {
                    String echo = in.readLine();
                    //</Response>...
                    if (echo.indexOf("</Response>") > -1) {
                        echo = "</Response>";
                        result.append("\n" + echo);
                        break;
                    }
                    //...<?xml
                    Integer start = echo.indexOf("<?xml");
                    if (start > -1) {
                        echo = echo.substring(start);
                    }
                    result.append("\n" + echo);
                }
            } catch (SocketTimeoutException e) {
                System.out.println("Time out, No response");
            }
            if (client != null) {
                client.close();
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
        return result.toString();
    }