UDPClient.java :  » UnTagged » hackathon-jp » jp » aplix » hello » Android Open Source

package jp.aplix.hello;

import java.io.*;
import java.net.*;

import android.content.pm.PackageManager;
import android.util.Log;

class UDPClient
{
  DatagramSocket clientSocket;
  InetAddress IPAddress;
  int port;

  public UDPClient(String host, int port) throws Exception
  {
    clientSocket = new DatagramSocket();
    IPAddress = InetAddress.getByName(host);
    this.port = port;
  }

  public void send(String sentence) throws IOException
  {
    if (clientSocket != null)
    {
      byte[] sendData = new byte[1024];

      sendData = sentence.getBytes();
      DatagramPacket sendPacket = new DatagramPacket(sendData, sendData.length, IPAddress, this.port);
      clientSocket.send(sendPacket);
    }
    else
    {
      
    }
  }
  
  public void send(SensorData data) throws IOException
  {
    if (clientSocket != null)
    {
      //FIXME with serialized object on data
      byte[] sendData = PackManager.serialize(data);
      
      //Log.i("CLIENT", "lenght="+sendData.length);
      DatagramPacket sendPacket = new DatagramPacket(sendData, sendData.length, IPAddress, this.port);
      clientSocket.send(sendPacket);
    }
  }

  public String receive() throws IOException
  {
    if (clientSocket != null)
    {
      byte[] receiveData = new byte[1024];
      DatagramPacket receivePacket = new DatagramPacket(receiveData, receiveData.length);
      clientSocket.receive(receivePacket);
      String sentence = new String(receivePacket.getData());
      Log.i("CLIENT", "FROM SERVER:" + sentence);
      return sentence;
    }
    return null;
  }

  public void close()
  {
    if (clientSocket != null)
    {
      clientSocket.close();
    }
  }
}