FileDocCategorySizeDatePackage
QuoteServerThread.javaAPI DocExample2426Tue Dec 12 18:57:28 GMT 2000None

QuoteServerThread

public class QuoteServerThread extends Thread

Fields Summary
private DatagramSocket
socket
private DataInputStream
qfs
private boolean
moreQuotes
Constructors Summary
QuoteServerThread()


     
        super("QuoteServer");
        try {
            socket = new DatagramSocket();
            System.out.println("QuoteServer listening on port: " + socket.getLocalPort());
        } catch (java.io.IOException e) {
            System.err.println("Could not create datagram socket.");
        }
        this.openInputFile();
Methods Summary
private java.lang.StringgetNextQuote()

        String returnValue = null;
        try {
            if ((returnValue = qfs.readLine()) == null) {
                qfs.close();
                moreQuotes = false;
                returnValue = "No more quotes. Goodbye.";

            }
        } catch (IOException e) {
            returnValue = "IOException occurred in server.";
        }
        return returnValue;
private voidopenInputFile()

        try {
            qfs = new DataInputStream(new FileInputStream("one-liners.txt"));
        } catch (java.io.FileNotFoundException e) {
            System.err.println("Could not open quote file. Serving time instead.");
        }
public voidrun()

        if (socket == null)
            return;

        while (moreQuotes) {
            try {
                byte[] buf = new byte[256];
                DatagramPacket packet;
                InetAddress address;
                int port;
                String dString = null;

                    // receive request
                packet = new DatagramPacket(buf, 256);
                socket.receive(packet);
                address = packet.getAddress();
                port = packet.getPort();

                    // send response
                if (qfs == null)
                    dString = new Date().toString();
                else
                    dString = getNextQuote();
                dString.getBytes(0, dString.length(), buf, 0);
                packet = new DatagramPacket(buf, buf.length, address, port);
                socket.send(packet);
            } catch (IOException e) {
                System.err.println("IOException:  " + e);
                moreQuotes = false;
                e.printStackTrace();
            }
        }
        socket.close();