Hello.

I'm trying to create a ftp client running on adobe AIR in flex builder.

The fcommand socket work, but when i create the data socket, the command socket still work but if I tipe a new command, like PWD, i do not receive answer. Does someone know why?

I don't see error events widh IO_ERROR or SECURITY error, so I suppose no error occours.

here is the code

import flash.events.Event;
               import flash.events.IOErrorEvent;
               import flash.events.MouseEvent;
               import flash.events.ProgressEvent;
               import flash.events.SecurityErrorEvent;
               import flash.net.Socket;
 
               protected var s:Socket;               // socket comandi
               protected var s_dati:Socket;
               protected function btn_connetti_clickHandler(event:MouseEvent):void
               {
                    var aspetta:Boolean = true;
                    
                    function connesso(evt:Event):void     {
                         //label_stato.text += "Connesso!";
                         
                         // ora che la socket è connessa invia user e password
                         s.writeUTFBytes("USER **\n");
                         s.writeUTFBytes("PASS **\n");
                         
                         // apre un canale dati passivo
                         //s.writeUTFBytes("RETR index.php\n");
                         s.writeUTFBytes("PASV\n");
                    }
                    
                    function connessoDati(evt:Event):void     {
                         label_stato.text += "Socket dati connessa!";
                         
                         if(s.connected)
                              s.writeUTFBytes("\nLIST\n\n");     THIS COMMAND DOES NOT RETURN ANY OUTPUT
                         else
                              label_stato.text = "CONNESSIONE PERSA\n";
                    }
                    
                    function riceviDati(evt:ProgressEvent):void     {
                         label_stato.text += "DATA -> "+ s_dati.readUTFBytes(evt.bytesLoaded);
                    }
                    
                    function erroreSicurezza(evt:SecurityErrorEvent):void     {
                         label_stato.text = "Errore nella sicurezza "+evt.text;
                    }
                    
                    function chudi(evt:Event):void     {
                         label_stato.text = "Chiusura connessione";
                    }
                    
                    function progresso(evt:ProgressEvent):void     {
                         var str:String = s.readUTFBytes(evt.bytesLoaded);
                         label_stato.text += str;
                         var arrS:Array = str.split("\n");
                         for (var i:int = 0; i<arrS.length; i++)     {
                              //if(arrS[i])
                              //label_stato.text += "->"+arrS[i]+"\n";
                              var tmps:String = arrS[i].toString();
                              if(tmps.substr(0,3) == "227")     {
                                   //label_stato.text += tmps+"\n";
                                   var IPport:String = tmps.substring( tmps.indexOf("("), tmps.indexOf(")") );
                                   var numeri:Array = IPport.split(",");
                                   var porta:Number = 0;     // numero di porta;
                                   var LSB:Number = numeri[numeri.length-1];
                                   var MSB:Number = numeri[numeri.length-2];
 
                                   label_stato.text += "Connessione passiva\n" + MSB+ " " + LSB+"\n";
                                   porta = (MSB *256) + LSB;
                                   s_dati.connect("ftp.******.it", porta);
                                   s.writeUTFBytes("RETR index.php\n");
                              }
                         }
                    }
                    
                    function erroreIO(evt:IOErrorEvent):void     {
                         label_stato.text += "\nERRORE " + evt.text;
                    }
                    
                    // crea la socket
                    s = new Socket();
                    s_dati = new Socket();
                    
                    // gestione eventi
                    s.addEventListener(Event.CONNECT, connesso);
                    s.addEventListener(ProgressEvent.SOCKET_DATA, progresso);
                    s.addEventListener(IOErrorEvent.IO_ERROR, erroreIO);
                    s.addEventListener(SecurityErrorEvent.SECURITY_ERROR, erroreSicurezza);
                    s.addEventListener(Event.CLOSE, chudi);
                    s_dati.addEventListener(Event.CONNECT, connessoDati);
                    s_dati.addEventListener(ProgressEvent.SOCKET_DATA, riceviDati);
                    s_dati.addEventListener(IOErrorEvent.IO_ERROR, erroreIO);
                    s_dati.addEventListener(SecurityErrorEvent.SECURITY_ERROR, erroreSicurezza);
                    s_dati.addEventListener(Event.CLOSE, chudi);
                    s.connect("ftp.****.it", 21);
               }
 
 
               protected function btn_dati_clickHandler(event:MouseEvent):void
               {
                    label_stato.text += tx_comandi.text+"\n";
                    s.writeUTFBytes(tx_comandi+"\n");
               }