JAVA 基于UDP的多客户端和一个服务器的问题，服务端不能转发消息

[hsw0922]

import java.io.IOException;
import java.net.DatagramPacket;
import java.net.DatagramSocket;
import java.net.SocketAddress;
import java.net.SocketException;
import java.util.ArrayList;
import java.util.List;

public class Server {
	private List<SocketAddress> all = new ArrayList<SocketAddress>();
	
	public static void main(String args) throws IOException {
		new Server().start();
	}
	
	public void start() {
		try {
			DatagramSocket server = new DatagramSocket(30003);
			while(true) {
				MyChannel channel = new MyChannel(server);
				new Thread(channel).start();
				
			}	
		} catch (SocketException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}
	
	private class MyChannel implements Runnable{
		private DatagramSocket server;
		private DatagramPacket packet;
		public MyChannel(DatagramSocket server) {
			this.server = server;
			try {
				byte container = new byte;
				packet =new DatagramPacket(container,container.length);
				server.receive(packet);
				SocketAddress address = packet.getSocketAddress();
				all.add(address);   //加入到容器
			} catch (IOException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
		}
		
		private String receive() {
			String msg;
			msg = new String(packet.getData(),0,packet.getLength());
			return msg;
		}
		
		@Override
		public void run() {
			// TODO Auto-generated method stub
				System.out.println(receive());
				sendOthers(packet);
		}
		
		private void sendOthers(DatagramPacket dp) {
			//String msg = receive();
			//遍历容器
			for(SocketAddress sa:all) {
				try {
					String str = new String(dp.getData(),0,dp.getLength()); 
					DatagramPacket dd = new DatagramPacket(str.getBytes(),str.getBytes().length,sa);	
					server.send(dd);
				} catch (IOException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				}
			}
				
		}
		
	}
}  

不知道问题出在哪里，debug模式下容器里是有地址的，但是消息没有按地址转发过去

[verejava]

发送的时候需要设置接送端 的 端口号和 IP

Java 网络编程 之 UDP

http://www.verejava.com/?id=16994911008925

[hsw0922]

引用 1 楼 verejava 的回复:

发送的时候需要设置接送端 的 端口号和 IP

Java 网络编程 之 UDP

http://www.verejava.com/?id=16994911008925

获取了客户端的IP和端口，都存在容器里了， 然后发送时遍历了容器里的IP和端口
，，
但是客户端只能收到自己发送的消息