protocol.java

来自「source code for fishnet」· Java 代码 · 共 44 行

/**
 * <pre>   
 * Contains details about the recognized protocols in Fishnet
 * </pre>   
 */
public class Protocol {
    
    public static final int PING_PKT       = 0;
    public static final int PING_REPLY_PKT = 1;
    public static final int LINK_INFO_PKT  = 2;
    public static final int NAME_PKT       = 3;
    public static final int TRANSPORT_PKT  = 4;

    /**
     * Tests if the given protocol is valid
     * @param protocol The protocol to be checked
     * @return True if protocol is valid, else false
     */
    public static boolean isProtocolValid(int protocol) {
	return (protocol == PING_PKT       ||
		protocol == PING_REPLY_PKT ||
		protocol == LINK_INFO_PKT  ||
		protocol == NAME_PKT       ||
		protocol == TRANSPORT_PKT);
    }

    /**
     * Returns a string representation of the given protocol.
     * Can be used for debugging
     * @param protocol The protocol whose string representation is desired
     * @return The string representation of the given protocol. "Unknown Protocol" if the protocol is not recognized
     */
    public static String protocolToString(int protocol) {
	switch(protocol) {
	case PING_PKT:       return "Ping Packet";
	case PING_REPLY_PKT: return "Ping Reply Packet";
	case LINK_INFO_PKT:  return "Link State Packet";
	case NAME_PKT:       return "Name Packet";
	case TRANSPORT_PKT:  return "Transport Packet";
	default:             return "Unknown Protocol";
	}
    }
}