// 
// Holding place for various constants used by the Pong protocol.
//

public class Pong {

  //
  // Where to reach the masterServer.
  //

  public static final String MASTERHOST = "xi.cs.fsu.edu";
  public static final int MASTERPORT = 20000;

  //
  // pongServer <--> masterServer protocol commands (unique positive numbers).
  //

  public static final int SERVER_ACK = 0;		// acknowledgement previous packet
  public static final int SERVER_NAK = 1;		// negative acknowledgement
  public static final int SERVER_LOGIN = 2;	// add this server to serverList
  public static final int SERVER_LOGOUT = 3;  	// remove from serverList
  public static final int SERVER_LIST = 4;  	// return list of all servers
  public static final int SERVER_PING = 5;  	// pongServer <--> pongServer

  //
  // pongClient <--> pongServer protocol commands
  //

  public static final int CLIENT_LIST = 100;
  public static final int CLIENT_PING = 101;	// pongClient <--> pongServer
  public static final int CLIENT_ACK  = 102;
  public static final int CLIENT_NAK  = 103;

  //
  // Various return codes (unique negative numbers).
  //

  public static final int SERVER_ALREADY_LOGGED_IN = -1;	// server already logged in
  public static final int SERVER_NOT_LOGGED_IN = -2;	// server not logged in
  public static final int SERVER_READ_FAILED = -3;	// readObject() failed
  public static final int CLIENT_READ_FAILED = -4;	// readObject() failed

  public static final int MAX_IDLE_TIME = 60*5;		// max idle time for servers

}