UDP示例

android学习笔记18--------------UDP示例

分类： android2011-11-10 10:07 848人阅读 评论(0) 收藏 举报
androidbufferexceptionbytestringimport

参考别人一幅原理图。





[java] view plaincopyprint?

import java.io.IOException;

import java.net.DatagramPacket;

import java.net.DatagramSocket;

import java.net.InetAddress;

public class UDPClient

{

private DatagramSocket client=null;

private DatagramPacket packet=null;

private InetAddress host=null;

public static int portSend=8888;

public static String name="192.168.142.199";

public UDPClient()

{

try

{

host = InetAddress.getByName(name);

client=new DatagramSocket();

System.out.println("客户端准备就绪");

} catch (Exception e)

{

e.printStackTrace();

}

}

public void UDPClientRun(byte[] buffer) throws IOException

{

host = InetAddress.getByName(name);

packet=new DatagramPacket(buffer,buffer.length, host, portSend);

client.send(packet);

System.out.println("客户端发送消息");

}

public void UDPClientStop()

{

client.close();

}

}

[java] view plaincopyprint?

import java.io.IOException;

import java.net.DatagramPacket;

import java.net.DatagramSocket;

public class UDPService

{

private DatagramSocket server =null;

private DatagramPacket dPacket=null;

private byte[] buffer = new byte[640];

public static int portServer=8888;

public UDPService ()

{

try

{

server = new DatagramSocket(portServer);

dPacket = new DatagramPacket(buffer, buffer.length);

} catch (Exception e)

{

e.printStackTrace();

}

}

public byte[] UDPServiceRun()

{

try

{

server.receive(dPacket);

System.out.println("服务端接收到消息");

} catch (IOException e)

{

e.printStackTrace();

System.out.println("服务端未收到消息");

}

return buffer;

}

public void UDPSeverStop()

{

server.close();

}

public String getClientName()

{

String name="";

name=dPacket.getAddress().toString();

return name;

}

}