IOExecption in palm

Question

Hi, i have some problems with my application. My program is running in a palm tx with j9 Vm, and it send some information with http post to a php server. All work fine when i have an active wifi connection, but when the palm dont find any wifi connection, i get some msg from the palm that say: Error in net, and put me three options for configuration: OK,WIFI,BLUeTooth, when i press ok, the application try another time to open the connection, and i get the msg again, and again and again if i press OK,(If i press the other two, it send my to some configurations, and back again), in the 4 or 6 msg i get the IOException of my application. I don't now why! plis help me, this is the only problem of my application, but is annoying! here is the code:
* Comunicacion.java
* Created on April 12, 2007, 11:11 AM
* To change this template, choose Tools | Template Manager
* and open the template in the editor.
import java.io.*;
import javax.microedition.io.*;
* @author DANNIEL
public class Comunicacion implements Runnable{
   private Thread t;
   private Tms midlet;
   private String url="http://www.locho0424.com/midlet/Tmspda.php";
   private String data,salida,from;
   /** Creates a new instance of Comunicacion */
   public Comunicacion(Tms m) {
      midlet=m;    
   public void conectar(String d,String f){
      data=d ;
      from=f;
      t=new Thread(this);
       t.start();
   public void run(){
      try{
         procesaRes();
      }catch(Exception e){
         int i,j;
         String store="";
         if(from.compareTo("fformu")==0){
            if(data.indexOf("insert")>-1){
             i=data.indexOf("insert")+6;
             j=data.length();
             store=data.substring(i,j);
            midlet.signosV.setdatos(store);
            midlet.setTicker(midlet.fintro,"Tiene datos sin enviar");
         midlet.setAlarm("Error trying openning connection",midlet.fintro);
         //System.err.println("Error:"+e.toString());
   private void procesaRes() throws IOException{
     InputStream in=null;
     OutputStream out=null;
     StringBuffer b=new StringBuffer();
     HttpConnection conn=null;
     boolean sync=false;
     //System.out.println(data);
      try{
         conn=(HttpConnection) Connector.open(url,Connector.READ_WRITE,true);     
         conn.setRequestProperty("User-Agent","Profile/MIDP-2.0 Configuration/CLDC-1.1");
         conn.setRequestProperty("Content-Language","es-ES");
         conn.setRequestProperty("Content-Type","application/x-www-form-urlencoded");
         conn.setRequestProperty( "Content-Length",Integer.toString(data.length()));
         conn.setRequestMethod(HttpConnection.POST);
         //System.out.println(data);
         out=conn.openOutputStream();
         out.write(data.getBytes());
         //out.flush();
         if(conn.getResponseCode() == HttpConnection.HTTP_OK){
            if( (from.compareTo("fnewpac")) ==0){
               midlet.paciente.borrarPacientes();
               midlet.pacpopup.deleteAll();
               midlet.cantdeDatos=0;
            int ch,i,j,k=0;
            in=conn.openInputStream();
            while( (ch = in.read()) != -1){
                 b.append((char) ch);
                 if (ch == '\n') {
                    sync=true;
                    if (b.toString().indexOf("name>") > -1) {
                        i = b.toString().indexOf("name>")+5;
                        j =b.toString().indexOf("<name");
                        midlet.setPacPopup(b.toString().substring(i,j));
                        midlet.paciente.setPaciente(b.toString().substring(i,j));
                        k++;
                    b.delete(0,b.length());
            if (sync==false) {
               if(from.compareTo("fformu")==0){
                  midlet.setTicker(midlet.fformu,b.toString());
                  midlet.setAlarm("Expediente Actualizado",midlet.fformu);
               else{
                  midlet.signosV.borrardatos();
                  midlet.da.deleteAll();
                  midlet.setTicker(midlet.fintro,"Todos los datos Fueron enviados");
                  midlet.setAlarm(b.toString(),midlet.fintro);
            else {
               midlet.setTicker(midlet.fnewpac,"Se encontro "+k+" paciente(s) asignado(s) a esta unidad");
         else{
             if(from.compareTo("fformu")==0){
            midlet.signosV.setdatos(data);
            midlet.setTicker(midlet.fintro,"Tiene dato(s) sin enviar");
            midlet.setAlarm("Error in opening HTTP Connection. Error#:"+conn.getResponseMessage(),midlet.fintro);
          //  System.out.println(conn.getResponseMessage());getResponseMessage
     // System.err.println("Error: " + e.toString());
   }finally{
      if(out!=null) out.close();
      if(in!= null) in.close();
      if(conn !=null) conn.close();
}

Answer 1

If you use MIDP, you have to use an HTTP connection to transfer data
from MIDP to your PC.
But you have the option of developing the PC Connector independent of MIDP
by:
a) Develop a Java conduit.
b) Use the Hotsync utility to backup data from RMS into your PC
and then write a program to read the backed up data and update the database.
You can see more details on www.palmos.com. Again, I am not completely
sure about above two options.
Ajay