Flutter API post method can not send data to SQL server localhost. Show error "HTTP error 400. The request hostname is invalid"

In "bb" variable all data show in json format when i debugged. but show this error "HTTP Error 400. The request hostname is invalid". This json data is working in Postman Please Help!!!!

void send() async
{
var bb=json.encode(listModel.toJson());
    var response = await http.post(Uri.parse(
      "http://10.0.2.2:1066/api/Storedata/Add"),
      body: bb,
     headers: {"Content-type": "application/json"},);
if (response.statusCode == 201)
  {
    print("Done");
  }
else
  {
    print(response.body);
    print(response.statusCode);
  }
}