Listing 1.5
Name Service Packet Header FLAGS
Subfield Values

#define NBTNS_R_BIT       0x8000  /* The 'R'esponse bit   */

/* OPCODE values */
#define OPCODE_QUERY      0x0000  /* Query        (0<<11) */     
#define OPCODE_REGISTER   0x2800  /* Registration (5<<11) */     
#define OPCODE_RELEASE    0x3000  /* Release      (6<<11) */    
#define OPCODE_WACK       0x3800  /* WACK         (7<<11) */
#define OPCODE_REFRESH    0x4000  /* Refresh      (8<<11) */
#define OPCODE_ALTREFRESH 0x4800  /* Alt Refresh  (9<<11) */
#define OPCODE_MULTIHOMED 0x7800  /* Multi-homed  (f<<11) */
#define OPCODE_MASK       0x7800  /* Mask                 */ 

/* NM_FLAGS subfield bits */ 
#define NM_AA_BIT         0x0400  /* Authoritative Answer */
#define NM_TR_BIT         0x0200  /* TRuncation flag      */
#define NM_RD_BIT         0x0100  /* Recursion Desired    */
#define NM_RA_BIT         0x0080  /* Recursion Available  */
#define NM_B_BIT          0x0010  /* Broadcast flag       */

/* Return Codes */
#define RCODE_POS_RSP     0x0000  /* Positive Response    */
#define RCODE_FMT_ERR     0x0001  /* Format Error         */
#define RCODE_SRV_ERR     0x0002  /* Server failure       */ 
#define RCODE_NAM_ERR     0x0003  /* Name Not Found       */ 
#define RCODE_IMP_ERR     0x0004  /* Unsupported request  */
#define RCODE_RFS_ERR     0x0005  /* Refused              */
#define RCODE_ACT_ERR     0x0006  /* Active error         */
#define RCODE_CFT_ERR     0x0007  /* Name in conflict     */
#define RCODE_MASK        0x0007  /* Mask                 */

/* Used to set the record count fields. */
#define QUERYREC          0x1000  /* Query Record         */
#define ANSREC            0x0100  /* Answer Record        */
#define NSREC             0x0010  /* NS Rec (never used)  */
#define ADDREC            0x0001  /* Additional Record    */

$Revision: 1.20 $ $Date: 2003/06/28 15:46:32 $

Copyright © 1999-2003 Christopher R. Hertel  Released under the terms of the LGPL