tpp/Protocol.java at master · cschutijser/tpp · GitHub

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package tpp;

public class Protocol
{
	/**
	 * CHANGE.
	 */

	/**
	 * Port number that is used for TCP-tunnels.
	 * <br><i>Application layer</i>
	 */
	public final static int PORT = 1337;

	public final static int MAX_FILE_SIZE = -1;

	/**
	 * Chat messages should start with this prefix.
	 * <br><i>Application layer</i>
	 */
	public final static char CHAT_PREFIX = 'C';

	/**
	 * File messages should start with this prefix.
	 * <br><i>Application layer</i>
	 */
	public final static char FILE_PREFIX = 'F';

	/**
	 * Accept messages should start with this prefix.
	 * <br><i>Application layer</i>
	 */
	public final static char ACCEPT_PREFIX = 'A';

	/**
	 * Send messages should start with this prefix.
	 * <br><i>Application layer</i>
	 */
	public final static char SEND_PREFIX = 'S';

	/**
	 * Size of the frame packet (in bytes).
	 * <br><i>Transport/Network layer</i>
	 */
	public final int HEADER_SIZE = 20;

	/**
	 * Maximum size of the packet payload (in bytes).
	 */
	public final int MAX_PAYLOAD_SIZE = 1024;

	/**
	 * Maximum size of the entire packet (in bytes).
	 */
	public final int MAX_FRAME_SIZE = HEADER_SIZE + MAX_PAYLOAD_SIZE;

	/**
	 * Time after which an outgoing package is assumed to have been lost (in seconds).
	 */
	public final int TIMEOUT = 60;
}