ipv4constants.java

纯java操作系统jnode,安装简单和操作简单的个人使用的Java操作系统

/*
 * $Id: IPv4Constants.java,v 1.1 2003/11/25 11:52:24 epr Exp $
 */
package org.jnode.net.ipv4;

/**
 * @author epr
 */
public interface IPv4Constants {

	// Well known protocols
	public static final int IPPROTO_IP	= 0;	/* Dummy protocol for TCP		*/
	public static final int IPPROTO_ICMP	= 1;	/* Internet Control Message Protocol	*/
	public static final int IPPROTO_IGMP	= 2;	/* Internet Group Management Protocol	*/
	public static final int IPPROTO_IPIP	= 4;	/* IPIP tunnels (older KA9Q tunnels use 94) */
	public static final int IPPROTO_TCP	= 6;	/* Transmission Control Protocol	*/
	public static final int IPPROTO_EGP	= 8;	/* Exterior Gateway Protocol		*/
	public static final int IPPROTO_PUP	= 12;	/* PUP protocol				*/
	public static final int IPPROTO_UDP	= 17;	/* User Datagram Protocol		*/
	public static final int IPPROTO_IDP	= 22;	/* XNS IDP protocol			*/
	public static final int IPPROTO_RSVP	= 46;	/* RSVP protocol			*/
	public static final int IPPROTO_GRE	= 47;	/* Cisco GRE tunnels (rfc 1701,1702)	*/

	public static final int IPPROTO_IPv6	= 41;	/* IPv6-in-IPv4 tunnelling		*/

	public static final int IPPROTO_PIM	= 103;	/* Protocol Independent Multicast	*/

	public static final int IPPROTO_ESP	= 50;	/* Encapsulation Security Payload protocol */
	public static final int IPPROTO_AH	= 51;	/* Authentication Header protocol       */
	public static final int IPPROTO_COMP	= 108;	/* Compression Header protocol */

	public static final int IPPROTO_RAW	= 255;	/* Raw IP packets			*/
	
	// Fragmentation bits
	public static final int IP_MF		= 0x2000; // More fragment will follow
	public static final int IP_DF		= 0x4000; // Don't fragment
	public static final int IP_FRAGOFS_MASK = 0x1FFF; // Mask to get fragment offset
	public static final long IP_FRAGTIMEOUT = 120000; // Number of ms till a fragmentlist is timed out.
	public static final int IP_MIN_FRAG_SIZE = 8; // Minumum size of a fragment
	
	// Route flags
	public static final int RTF_UP			= 0x0001;		/* route usable		  	*/
	public static final int RTF_GATEWAY		= 0x0002;		/* destination is a gateway	*/
	public static final int RTF_HOST			= 0x0004;		/* host entry (net otherwise)	*/
	public static final int RTF_REINSTATE	= 0x0008;		/* reinstate route after tmout	*/
	public static final int RTF_DYNAMIC		= 0x0010;		/* created dyn. (by redirect)	*/
	public static final int RTF_MODIFIED		= 0x0020;		/* modified dyn. (by redirect)	*/
	public static final int RTF_MTU			= 0x0040;		/* specific MTU for this route	*/
	public static final int RTF_MSS			= RTF_MTU;		/* Compatibility :-(		*/
	public static final int RTF_WINDOW		= 0x0080;		/* per route window clamping	*/
	public static final int RTF_IRTT			= 0x0100;		/* Initial round trip time	*/
	public static final int RTF_REJECT		= 0x0200;		/* Reject route			*/

	// Port ranges
	public static final int IPPORT_RESERVED = 1024;
	public static final int IPPORT_USERRESERVED = 5000;
	
}