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java实现UDP协议传输DatagramSocket
摘自：http://blog.csdn.net/wintys/article/details/3525643/
Server端。
package com.topca.server;import java.io.IOException;import java.net.DatagramPacket;import java.net.DatagramSocket;import java.net.InetAddress;public class UDPServer { public static void main(String[] args) throws IOException { DatagramSocket server = new DatagramSocket(5050); byte[] recvBuf = new byte[100]; DatagramPacket recvPacket = new DatagramPacket(recvBuf, recvBuf.length); server.receive(recvPacket); String recvStr = new String(recvPacket.getData(), 0, recvPacket.getLength()); System.out.println("Hello World!" + recvStr); int port = recvPacket.getPort(); InetAddress addr = recvPacket.getAddress(); String sendStr = "Hello ! I‘m Server"; byte[] sendBuf; sendBuf = sendStr.getBytes(); DatagramPacket sendPacket = new DatagramPacket(sendBuf, sendBuf.length, addr, port); server.send(sendPacket); server.close(); }}
Client端
package com.topca.clien;import java.io.IOException;import java.net.DatagramPacket;import java.net.DatagramSocket;import java.net.InetAddress;public class UDPClien { public static void main(String[] args)throws IOException{ DatagramSocket client = new DatagramSocket(); String sendStr = "Hello! I‘m Client"; byte[] sendBuf; sendBuf = sendStr.getBytes(); InetAddress addr = InetAddress.getByName("10.0.1.203"); int port = 5050; DatagramPacket sendPacket = new DatagramPacket(sendBuf ,sendBuf.length , addr , port); client.send(sendPacket); byte[] recvBuf = new byte[100]; DatagramPacket recvPacket = new DatagramPacket(recvBuf , recvBuf.length); client.receive(recvPacket); String recvStr = new String(recvPacket.getData() , 0 ,recvPacket.getLength()); System.out.println("收到:" + recvStr); client.close(); }}
java实现UDP协议传输DatagramSocket
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