客戶端無法從服務器接收UDP數據報

Question

我可以將UDP數據報從客戶端發送到服務器並接收，但是我無法將數據報從服務器發送回客戶端。

什么都沒發生。 我所看到的只是：服務器端的“ Hello Server”，但我看不到：客戶端的“ Hello Client”。

    final int PACKETSIZE = 100;

//CLIENT
        byte[] newData = "Hello Server".getBytes();
        DatagramPacket newPacket = new DatagramPacket(newData, newData.length, packet.getAddress(), packet.getPort());

        // Send it
        socket.send(newPacket);

        // Set a receive timeout, 2000 milliseconds
        socket.setSoTimeout(2000);

        // Prepare the packet for receive
        packet.setData(new byte[PACKETSIZE]);

        // Wait for a response from the server
        socket.receive(packet);

        // Print the response
        System.out.println("RECEIVED MESSAGE FROM SERVER: " + new String(packet.getData()));

//SERVER
        int port = Integer.parseInt("1024");
        socket = new DatagramSocket(port);

        System.out.println("SERVER STARTED ON UDP PORT: " + port);


        while (true) {
            // Create a packet
            packet = new DatagramPacket(new byte[PACKETSIZE], PACKETSIZE);

            // Receive a packet (blocking)
            socket.receive(packet);

            // Print the packet sent from the client
            System.out.println(packet.getAddress() + " " + packet.getPort() + ": " + new String(packet.getData()));
            // Create a new packet to send back to the client
            byte[] newData = "Hello Client".getBytes();
            DatagramPacket newPacket = new DatagramPacket(newData, newData.length, packet.getAddress(), packet.getPort());
            // Return the packet to the sender (the client)
            socket.send(newPacket);
        }

Answer 1

得到它的工作。 正在重用同一數據包。