/*
 * Author: Wenbing Zhao
 * Last Modified: 9/18/2006
 * For EEC484/584 Project 1
 */

public class ParReceiver extends DataLinkLayer{
    public static final int RECEIVER_PORT = 9888;
    public static final int SENDER_PORT = 9887;

    public ParReceiver(PhysicalLayer pl) {
	super(pl);
    }

    public void run() {
	int nextFrameExpected;
	Frame frameReceived = new Frame();
	Frame frameToSend = new Frame();

	nextFrameExpected = 0;
	System.out.println("Ready to receive: ");

	while(true) {
	    int event = waitForEvent();
	    if(EVENT_FRAME_ARRIVAL == event) {
		frameReceived = receiveFrameFromPhysicalLayer();
		
		// To be completed
	    }
	}
    }

    // To be modified
    // We simply extract the payload and display it as a string in stdout
    void deliverPacket(Frame frame) {
	Packet packet = new Packet();
	packet.length = frame.length;
	packet.payload = frame.payload;
	byte[] payload = new byte[packet.length];
	for(int i=0; i<payload.length; i++)
	    payload[i] = packet.payload[i];
	String recvd = new String(payload);
	System.out.println("Received "+packet.length+" bytes: "+recvd);
    }

    public static void main(String args[]) throws Exception { 
	PhysicalLayer pl = new PhysicalLayer(RECEIVER_PORT, SENDER_PORT);
	ParReceiver receiver = new ParReceiver(pl);
	pl.setDataLinkLayer(receiver);
	receiver.run();
    } 
}