/*
 * Copyright (C) 2016 即时通讯网(52im.net) - 即时通讯开发者社区.
 * All rights reserved.
 */
package net.x52im.example.android.udp;
 
import net.x52im.example.android.udp.utils.UDPUtils;
import android.os.Bundle;
import android.os.Handler;
import android.support.v7.app.ActionBarActivity;
import android.util.Log;
 
/**
 * Demo主类。
 * 
 * @author jack.jiang＠52im.net, 2016-06-27
 * @version 1.0
 */
public class MainActivity extends ActionBarActivity 
{
        private final static String TAG = MainActivity.class.getSimpleName();
        // 重复发送的时间间隔（单位：毫秒）
        public static int INTERVAL = 5000;
        private Handler handler = null;
        private Runnable runnable = null;
 
        @Override
        protected void onCreate(Bundle savedInstanceState) 
        {
                super.onCreate(savedInstanceState);
                setContentView(R.layout.activity_main);
 
                // 初始化本地UDP的Socket
                LocalUDPSocketProvider.getInstance().initSocket();
                // 启动本地UDP监听（接收数据用的）
                LocalUDPDataReciever.getInstance(this).startup();
 
                // 自动循环发送
                handler = new Handler();
                runnable = new Runnable(){
                        @Override
                        public void run()
                        {
                                sendMessageToServer();
                                 
                                // 开始下一次循环
                                handler.postDelayed(runnable, INTERVAL);
                        }
                };
                 
                // 立即开始发送
                handler.postDelayed(runnable, 0);
        }
 
        private void sendMessageToServer()
        {
                try
                {
                        // 要发送的数据
                        String toServer = "Hi，我是客户端，我的时间戳"+System.currentTimeMillis();
                        byte[] soServerBytes = toServer.getBytes("UTF-8");
                        // 开始发送
                        boolean ok = UDPUtils.send(soServerBytes, soServerBytes.length);
                        if(ok)
                                Log.d(TAG, "发往服务端的信息已送出.");
                        else
                                Log.e(TAG, "发往服务端的信息没有成功发出！！！");
                }
                catch (Exception e)
                {
                        Log.w(TAG, e.getMessage(), e);
                }
        }
}

/*
 * Copyright (C) 2016 即时通讯网(52im.net) - 即时通讯开发者社区.
 * All rights reserved.
 */
package net.x52im.example.android.udp;
 
import net.x52im.example.android.udp.utils.UDPUtils;
import android.os.Bundle;
import android.os.Handler;
import android.support.v7.app.ActionBarActivity;
import android.util.Log;
 
/**
 * Demo主类。
 * 
 * @author jack.jiang＠52im.net, 2016-06-27
 * @version 1.0
 */
public class MainActivity extends ActionBarActivity 
{
        private final static String TAG = MainActivity.class.getSimpleName();
        // 重复发送的时间间隔（单位：毫秒）
        public static int INTERVAL = 5000;
        private Handler handler = null;
        private Runnable runnable = null;
 
        @Override
        protected void onCreate(Bundle savedInstanceState) 
        {
                super.onCreate(savedInstanceState);
                setContentView(R.layout.activity_main);
 
                // 初始化本地UDP的Socket
                LocalUDPSocketProvider.getInstance().initSocket();
                // 启动本地UDP监听（接收数据用的）
                LocalUDPDataReciever.getInstance(this).startup();
 
                // 自动循环发送
                handler = new Handler();
                runnable = new Runnable(){
                        @Override
                        public void run()
                        {
                                sendMessageToServer();
                                 
                                // 开始下一次循环
                                handler.postDelayed(runnable, INTERVAL);
                        }
                };
                 
                // 立即开始发送
                handler.postDelayed(runnable, 0);
        }
 
        private void sendMessageToServer()
        {
                try
                {
                        // 要发送的数据
                        String toServer = "Hi，我是客户端，我的时间戳"+System.currentTimeMillis();
                        byte[] soServerBytes = toServer.getBytes("UTF-8");
                        // 开始发送
                        boolean ok = UDPUtils.send(soServerBytes, soServerBytes.length);
                        if(ok)
                                Log.d(TAG, "发往服务端的信息已送出.");
                        else
                                Log.e(TAG, "发往服务端的信息没有成功发出！！！");
                }
                catch (Exception e)
                {
                        Log.w(TAG, e.getMessage(), e);
                }
        }
}

/*
 * Copyright (C) 2016 即时通讯网(52im.net) - 即时通讯开发者社区.
 * All rights reserved.
 */
package net.x52im.example.android.udp;
 
import java.net.DatagramPacket;
import java.net.DatagramSocket;
 
import net.x52im.example.android.udp.utils.ConfigEntity;
import android.content.Context;
import android.util.Log;
 
/**
 * 本地UDP端口监听和数据接收类。
 * 
 * @author jack.jiang＠52im.net, 2016-06-27
 * @version 1.0
 */
public class LocalUDPDataReciever
{
        private static final String TAG = LocalUDPDataReciever.class.getSimpleName();
        private static LocalUDPDataReciever instance = null;
        private Thread thread = null;
        private Context context = null;
         
        public static LocalUDPDataReciever getInstance(Context context)
        {
                if (instance == null)
                        instance = new LocalUDPDataReciever(context);
                return instance;
        }
 
        private LocalUDPDataReciever(Context context)
        {
                this.context = context;
        }
 
        public void startup()
        {
                this.thread = new Thread(new Runnable()
                {
                        public void run()
                        {
                                try
                                {
                                        Log.d(LocalUDPDataReciever.TAG, "本地UDP端口侦听中，端口=" + ConfigEntity.localUDPPort + "...");
 
                                        //开始侦听
                                        LocalUDPDataReciever.this.udpListeningImpl();
                                }
                                catch (Exception eee)
                                {
                                        Log.w(LocalUDPDataReciever.TAG, "本地UDP监听停止了(socket被关闭了?)," + eee.getMessage(), eee);
                                }
                        }
                });
                this.thread.start();
        }
 
        private void udpListeningImpl() throws Exception
        {
                while (true)
                {
                        byte[] data = new byte[1024];
                        // 接收数据报的包
                        DatagramPacket packet = new DatagramPacket(data, data.length);
 
                        DatagramSocket localUDPSocket = LocalUDPSocketProvider.getInstance().getLocalUDPSocket();
                        if ((localUDPSocket == null) || (localUDPSocket.isClosed()))
                                continue;
                         
                        // 阻塞直到收到数据
                        localUDPSocket.receive(packet);
                         
                        // 解析服务端发过来的数据
                        String pFromServer = new String(packet.getData(), 0 , packet.getLength(), "UTF-8");
                        Log.w(LocalUDPDataReciever.TAG, "【NOTE】>>>>>> 收到服务端的消息："+pFromServer);
                }
        }
}