private void ConnectAndRegister(IPAddress ip, int port, string username, string password)
        {
            Global.Net.server = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
            Global.Net.server.Connect(new IPEndPoint(ip, port));
            //Connect to server

            if (Global.Net.server.Connected)
            {
                Global.Messages.Registration registrationPackage = new Global.Messages.Registration();
                registrationPackage.username = username;
                registrationPackage.password = password;

                Global.Messages.LoginResponse registrationResult = Register(registrationPackage);
                if (registrationResult.status == "OK")
                {
                    MessageBox.Show("Succesfully registered and connected!");
                    Global.username = usernameTextBox.Text;
                    this.Hide();
                    ChatScreen chatScreen = new ChatScreen();
                    chatScreen.WriteLoginMessage(registrationResult.loginMessage);
                    chatScreen.Show();
                    //Hide this window and then open the chat screen
                }
                else if (registrationResult.status == "USER ALREDY EXISTS")
                {
                    MessageBox.Show("Error : The specified user alredy exists");
                }
            }
        }
        private Global.Messages.LoginResponse Register(Global.Messages.Registration reg)
        {
            string registerPackage = JsonConvert.SerializeObject(reg);

            //Convert the object to a JSON string

            Global.Net.server.Send(Encoding.UTF8.GetBytes(registerPackage));
            //The string to bytes and send it

            byte[] response = new byte[256];
            Global.Net.server.Receive(response);
            Global.Messages.LoginResponse deserializedResponse = JsonConvert.DeserializeObject <Global.Messages.LoginResponse>(Encoding.UTF8.GetString(response));
            return(deserializedResponse);
        }