Em viết app android có kết nối tới webservice viết bằng c# lúc kết nối bị lỗi http faild request 400
code kết nối bên android

Mã:
        private String WSDL_TARGET_NAMESPACE = "http://tempuri.org/";    private String SOAP_ADDRESS = "http://10.0.3.2:5268/Service1.asmx";    private String OPERATION_NAME = "checkLogin";    private String SOAP_ACTION = "http://tempuri.org/checkLogin";    private String CheckLogin(String id, String pass)    {        try        {                        SoapObject request = new SoapObject(WSDL_TARGET_NAMESPACE, OPERATION_NAME);            request.addProperty("Nick", id.toString());            request.addProperty("Pass", pass.toString());            SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(SoapSerializationEnvelope.VER11);            envelope.dotNet = true;            envelope.setOutputSoapObject(request);            HttpTransportSE androidHttpTransport = new HttpTransportSE(SOAP_ADDRESS, 60000);            androidHttpTransport.call(SOAP_ACTION + "/", envelope);            Object response =  envelope.getResponse();            return response.toString();        }        catch(Exception e)        {            return e.toString() + " Or wrong id and pass word";        }    }
sử dụng máy ảo genymotion