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    private static DatagramSocket socket;
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    private static DatagramSocket socket;
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    private static DatagramPacket packet;
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    private static DatagramPacket packet;
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    private static int portNumber = 1337;
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    private static int portNumber = 1337;
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    private static int packetNum = 0;
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    private static int packetNum = 0;
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    public static boolean verifyInput (String s)
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    {
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        int i;
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        // Check for QUIT message
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        if (s.equals("QUIT"))
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            return true;
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        // If it's not a QUIT, it must be 0's and 1's only
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        for (i=0; i<s.length; i++)
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            if (!(s.charAt(i) == '0' || s.charAt(i) == '1'))
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                return false;
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        // Everything was a 0 or 1, good!
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        return true;
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    }
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    /**
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    /**
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     * Method: readPacket()
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     * Method: readPacket()
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     * Purpose: Read a packet on the currently opened DatagramSocket,
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     * Purpose: Read a packet on the currently opened DatagramSocket,
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     * and return it as a String.
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     * and return it as a String.
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     */
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     */
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    }
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    }
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    /**
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    /**
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     * Method: guaranteedTransmit()
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     * Method: guaranteedTransmit()
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     * Purpose: A wrapper around readPacket() and writePacket() that implements
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     * Purpose: A wrapper around readPacket() and writePacket() that implements
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     * a reliable transmit mechanism. It allows you to specify a maximum number
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     * of times to try resending a packet.
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     * a reliable transmit mechanism.
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     */
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     */
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    public static P2_Packet guaranteedTransmit (byte type, byte[] data)
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    public static P2_Packet guaranteedTransmit (byte type, byte[] data)
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    {
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    {
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        P2_Packet reply;
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        P2_Packet reply;
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        int retries = 0;
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        int retries = 0;
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        packetNum++;
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        packetNum++;
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        return reply;
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        return reply;
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    }
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    }
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    /**
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     * Method: guaranteedTransmit()
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     * Purpose: A simplified version of the guaranteedTransmit() above.
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     */
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    public static P2_Packet guaranteedTransmit (byte type)
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    public static P2_Packet guaranteedTransmit (byte type)
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    {
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    {
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        byte[] pData = { 0 };
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        byte[] pData = { 0 };
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        return guaranteedTransmit (type, pData);
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        return guaranteedTransmit (type, pData);