TCP socket communication with a server

[Piero78]

Hello! I've a TCP server programmed in Visual C#. I want to develop an app with MIT App Inventor 2 to comunicate to my server.
The code of the server is:

byte[] bytes = new Byte[1024]; // Buffer per contenere i dati in arrivo dal client

            // Ottengo l'IP di rete LAN della macchina ed uso la porta 11000
            IPHostEntry ipHostInfo = Dns.Resolve(Dns.GetHostName());
            IPAddress ipLocale = ipHostInfo.AddressList[0];
            IPEndPoint EPLocale = new IPEndPoint(ipLocale, 11000);

            textBox2.Text = ipLocale.ToString();
           
            // Configuro il socket TCP
            server = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);

            try
            {
                // Imposto il server sull'endpoint locale ed attendo la richiesta del client
                server.Bind(EPLocale);
                server.Listen(10);

                // Controllo se ci sono connessioni
                while (true)
                {

                    Socket handler = server.Accept();

                    data = null;

                    // Una nuova connessione deve essere processata
                    while (true)
                    {

                        bytes = new byte[1024];
                        int bytesRec = handler.Receive(bytes);
                        data += Encoding.ASCII.GetString(bytes, 0, bytesRec);
                        if (data.IndexOf("<EOF>") > -1)
                        {
                            break;
                        }

                    }
                   
                    // Stampo i dati ricevuti dal client
                    data = data.Replace("<EOF>", "");
                    textBox1.Text = data;
                   
                    // Invio la risposta al client
                    data = "Dati ricevuti da " + ipLocale.ToString();
                    byte[] risposta = Encoding.ASCII.GetBytes(data);
                    handler.Send(risposta);
                   
                    // Chiudo il socket
                    handler.Shutdown(SocketShutdown.Both);
                    handler.Close();
                }
            }
            catch (Exception ex)
            {
                MessageBox.Show("Si è verificato un errore", "Errore", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }

My question is: Is there a way with MIT App Inventor 2 to communicate with the server?
Thanks.

[Taifun]

you could write your own extension...

more information about how to create an extension see here https://groups.google.com/d/msg/mitappinventortest/Ip2AX036d0U/5NJlAEbFCgAJ

however that will be more advanced and will require some Java skills...

Taifun

---

Trying to push the limits of App Inventor! Snippets, Tutorials and Extensions from Pura Vida Apps by Taifun. 

[Piero78]

Thanks for help! Do you know where can I find a list of extensions available at this time?
Thanks!

[Taifun]

as far as I know, there are currently the following extensions available

• MIT sample extensions http://appinventor.mit.edu/extensions/
  
• my extensions https://puravidaapps.com/extensions.php
  
• Hossein's extensions https://sourceforge.net/projects/ailivecomplete/files/extensions/
  

Taifun

[Piero78]

In your extensions there is one with WIFI functions, why you don't make methods to send and receive data?