Vfrdtyky

I've been trying to make an Http post request from visual basic but every time I get an exception, there is nothing wrong with authentication or headers since the same code works in C#, what am I missing to do in VB.Net to make it work?

here is what I've tried:
[vb]

    Sub test()

    Dim URL As String = "https://myurl.com.do"

    Dim User As String = "user"

    Dim Key As String = "key"

    Dim client As HttpClient = New HttpClient()

    client.BaseAddress = New Uri(URL)

    client.DefaultRequestHeaders.Accept.Add(New MediaTypeWithQualityHeaderValue("application/json"))

    client.DefaultRequestHeaders.Add("Auth1", User)

    client.DefaultRequestHeaders.Add("Auth2", Key)

    client.Timeout = New TimeSpan(0, 0, 160)



    Dim values = New Dictionary(Of String, String) From {

    {"param1", "1.00"},

    {"param2", "0"},

    {"param3", "1.00"},

    {"param4", "349000000"}

    }



    Dim content = New FormUrlEncodedContent(values)





    Try

        Dim response = client.PostAsync(URL, content).Result



        If response.IsSuccessStatusCode Then



            Try

                Dim OB As Object = JsonConvert.DeserializeObject(Of Object)(response.Content.ReadAsStringAsync().Result)



            Catch ex As Exception

                Console.WriteLine("error")

            End Try

        Else

            Console.WriteLine("{0} ({1})", CInt(response.StatusCode), response.ReasonPhrase)

        End If



        Console.ReadKey()

    Catch ex As Exception

        Console.WriteLine(ex.Message)

    End Try

End Sub

and this is the exception I'm getting:
(exception on first try catch,on the Dim response line ):

this is my working C# code:

 static void Main(string args)

    {

        string URL = "https://myurl.com.do";         



        String User = "user";

        String Key = "key";



        Dictionary<string, string> values = new Dictionary<string, string>();



        values.Add("param1", "1.00");

        values.Add("param2", "0");

        values.Add("param3", "1.00");

        values.Add("param4", "349000000");





        FormUrlEncodedContent content = new FormUrlEncodedContent(values);



        HttpClient client = new HttpClient();

        client.BaseAddress = new Uri(URL);

        client.Timeout = new TimeSpan(0, 0, 160);          

        client.DefaultRequestHeaders.Accept.Add( new MediaTypeWithQualityHeaderValue("application/json")  );



        client.DefaultRequestHeaders.Add("Auth1", User);

        client.DefaultRequestHeaders.Add("Auth2", Key);                    



        try

        {



            HttpResponseMessage response = client.PostAsync(URL, content).Result; 

            if (response.IsSuccessStatusCode)

            {                   

                try

                {

                    string b = response.Content.ReadAsStringAsync().Result;

                    Dictionary<string, string> dataObjects = JsonConvert.DeserializeObject<Dictionary<string, string>>(response.Content.ReadAsStringAsync().Result);// response.Content.read

                    object OB = JsonConvert.DeserializeObject<object>(response.Content.ReadAsStringAsync().Result);// response.Content.read               

                }

                catch (Exception)

                {





                }

            }

            else

            {

                Console.WriteLine("{0} ({1})", (int)response.StatusCode, response.ReasonPhrase);

            }

            Console.ReadKey();

        }

        catch (Exception ex)

        {

            Console.WriteLine("Error de conexion");

        }

    }

what am I missing or doing wrong in vb.net?

copy pasted answer from this next link:

Http post error: An existing connection was forcibly closed by the remote host

I think its because you are connecting to "https" url. In this case you have to add following line to your code.

ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls12;

It will accept "ssl" protocol for your request. "ServicePointManager.ServerCertificateValidationCallback" handler just controls certificate validity.