Hi Friends,
I have written Java coding to develop a simple application using
Android emulator in Eclipse. ( Scenario - I need to send UDP packets
to particular IP address also to the corresponding port numer which I
mentioned ).
My code is working properly when I try to rum my code it is executing
without error when I try to send packets from the emulator it is not
working, for your reference I have mentioned my Java code below.
Help me friends in this issue. I would really appreciate.
Thanks in Advance.
Source Code :
package com.getipandport;
import java.net.DatagramPacket;
import java.net.DatagramSocket;
import java.net.InetAddress;
import java.util.Random;
import android.app.Activity;
import android.net.wifi.WifiManager;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
public class getipandports extends Activity {
interface getipandportsReceiver
{
void addAnnouncedServers(InetAddress[] host, int port[]);
}
getipandports(WifiManager wifi) {
}
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
Button send=(Button)findViewById(R.id.send);
send.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
EditText temp=(EditText)findViewById(R.id.ip);// Text
box
reference for IP
String Dest_addr=String.valueOf(temp.getText());// Text
box
reference for Destination IP
temp=(EditText)findViewById(R.id.port);// Text box
reference
for port number
String port_number=String.valueOf(temp.getText());
temp=(EditText)findViewById(R.id.packet);// Text box
reference for no of packets
try
{
int
no_packet=Integer.parseInt(String.valueOf(temp.getText())); //Changing
the Value to int
int port = Integer.parseInt(port_number);//Changing the
Value to int
DatagramSocket socket = new DatagramSocket( );//Scoket
port datagram
byte[] buffer ;//Scoket input buffer
Random rand=new Random();//To generate randon value
DatagramPacket packet;
// To send no_packet
for(int i = 0; i < no_packet; i++) {
buffer=new byte[rand.nextInt()];
packet=new DatagramPacket(buffer,
buffer.length,InetAddress.getByName(Dest_addr),port);
socket.setSoTimeout(rand.nextInt());
socket.send(packet);
packet.setLength(buffer.length);
}
socket.close( );
}
catch(Exception Ex){
//temp.setText(Ex.getMessage());
}
}
});
}
}
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