/** Running the server watch thread (UDP) */
public void run() {
byte[] buffer = new byte[5000];
DatagramPacket packet;
try {
// Create a socket
MulticastSocket socket = new MulticastSocket(port + 1);
InetAddress address = InetAddress.getByName("224.0.0.31");
socket.joinGroup(address);
while (true) {
packet = new DatagramPacket(buffer, buffer.length);
socket.receive(packet); // Will wait until new packet received - Hence separate thread
if (firstRun) {
firstRun = false;
// Create thread to handle socket send
new ClientSendThread(packet.getAddress(), this, client).start();
}
ByteArrayInputStream bais = new ByteArrayInputStream(buffer);
ObjectInputStream ois = new ObjectInputStream(new BufferedInputStream(bais));
Packet pkt = (Packet) ois.readObject();
// Check the packet type - perform action based on this
if (pkt instanceof PointPacket) {
// Send packet to Canvas
canvas.drawPoints((PointPacket) pkt);
}
if (pkt instanceof ChatPacket) {
if (!((ChatPacket) pkt).get_sender().equals("KEEPALIVE")) {
chat.drawMessage((ChatPacket) pkt);
}
}
}
} catch (Exception e) {
System.err.println("Exception");
}
}
/** For recv points from the server PUBLIC method! */
public void sendPoints(PointPacket pnt) {
canvas.drawPoints(pnt);
}
