TransportConstants.java

/*
 * Copyright 1996 Sun Microsystems, Inc.  All Rights Reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Sun designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Sun in the LICENSE file that accompanied this code.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
 * CA 95054 USA or visit www.sun.com if you need additional information or
 * have any questions.
 */

package sun.rmi.transport;

public class TransportConstants {
    /** Transport magic number: "JRMI"*/
    public static final int Magic = 0x4a524d49;
    /** Transport version number */
    public static final short Version = 2;

    /** Connection uses stream protocol */
    public static final byte StreamProtocol = 0x4b;
    /** Protocol for single operation per connection; no ack required */
    public static final byte SingleOpProtocol = 0x4c;
    /** Connection uses multiplex protocol */
    public static final byte MultiplexProtocol = 0x4d;

    /** Ack for transport protocol */
    public static final byte ProtocolAck = 0x4e;
    /** Negative ack for transport protocol (protocol not supported) */
    public static final byte ProtocolNack = 0x4f;

    /** RMI call */
    public static final byte Call = 0x50;
    /** RMI return */
    public static final byte Return = 0x51;
    /** Ping operation */
    public static final byte Ping = 0x52;
    /** Acknowledgment for Ping operation */
    public static final byte PingAck = 0x53;
    /** Acknowledgment for distributed GC */
    public static final byte DGCAck = 0x54;

    /** Normal return (with or without return value) */
    public static final byte NormalReturn = 0x01;
    /** Exceptional return */
    public static final byte ExceptionalReturn = 0x02;
}