Как обработать входящий POST запрос

Dim request As WebRequest = WebRequest.Create("http://cubes-world.ru/1.php") 
            request.Method = "POST"
            Dim postData As String = "user=" + Me.TextBox1.Text + "&password=" + Me.TextBox2.Text + "&version=10"
            Dim byteArray As Byte() = Encoding.UTF8.GetBytes(postData)
            request.ContentType = "application/x-www-form-urlencoded"
            request.ContentLength = byteArray.Length
            Dim dataStream As Stream = request.GetRequestStream()
            dataStream.Write(byteArray, 0, byteArray.Length)
            dataStream.Close()
            Dim response As WebResponse = request.GetResponse()
            Console.WriteLine(CType(response, HttpWebResponse).StatusDescription)
            dataStream = response.GetResponseStream()
            Dim reader As New StreamReader(dataStream)
            Dim responseFromServer As String = reader.ReadToEnd()
            Console.WriteLine(responseFromServer)
            reader.Close()
            dataStream.Close()
            response.Close()
            If responseFromServer.Contains("Bad login") Then
                MsgBox("Неверный логин или пароль")
            ElseIf responseFromServer.Contains("Old version") Then
                MsgBox("Обновите лаунчер")
            Else 'MsgBox("Вы успешно вошли")
                Dim value() As String = Split(responseFromServer, ":")
                Serversession = value(3)