Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
import java.io.IOException;
import java.net.DatagramPacket;
import java.net.InetAddress;
import java.net.MulticastSocket;
import android.util.Log;

public class Main {
    private static final String TAG = "NetUtil";
    private static final int MULTICAST_PORT = 36666;
    private static MulticastSocket multicastSocket;

    static void sendData(byte[] data) throws IOException {
        Log.d(TAG, "sendData data.len:" + data.length);
        while (true) {

            if (multicastSocket == null) {
                multicastSocket = new MulticastSocket(MULTICAST_PORT);
                Log.d(TAG, "new MulticastSocket()");
            }

            //MulticastSocket multicastSocket = new MulticastSocket(MULTICAST_PORT);
            multicastSocket.setLoopbackMode(true);
            InetAddress group;
            DatagramPacket packet;
            for (int i = 0; i < data.length; i++) {
                Log.d(TAG, i + ":" + data[i]);
                group = InetAddress.getByName("239." + i + "." + data[i] + ".254");

                multicastSocket.joinGroup(group);
                packet = new DatagramPacket("".getBytes(), "".getBytes().length, group, MULTICAST_PORT);
                multicastSocket.send(packet);
                multicastSocket.leaveGroup(group);
            }
        }
    }
}