1 /* in.h 4.9 82/02/27 */ 2 3 /* 4 * Constants and structures defined by the internet system, 5 * Per RFC 790, September 1981. 6 */ 7 8 /* 9 * Protocols 10 */ 11 #define IPPROTO_ICMP 1 /* control message protocol */ 12 #define IPPROTO_GGP 2 /* gateway^2 (deprecated) */ 13 #define IPPROTO_TCP 6 /* tcp */ 14 #define IPPROTO_PUP 12 /* pup */ 15 #define IPPROTO_UDP 17 /* user datagram protocol */ 16 17 #define IPPROTO_RAW 255 /* raw IP packet */ 18 #define IPPROTO_MAX 256 19 20 /* 21 * Port/socket numbers: network standard functions 22 */ 23 #define IPPORT_ECHO 7 24 #define IPPORT_DISCARD 9 25 #define IPPORT_SYSTAT 11 26 #define IPPORT_DAYTIME 13 27 #define IPPORT_NETSTAT 15 28 #define IPPORT_FTP 21 29 #define IPPORT_TELNET 23 30 #define IPPORT_SMTP 25 31 #define IPPORT_TIMESERVER 37 32 #define IPPORT_NAMESERVER 42 33 #define IPPORT_WHOIS 43 34 #define IPPORT_MTP 57 35 36 /* 37 * Port/socket numbers: host specific functions 38 */ 39 #define IPPORT_TFTP 69 40 #define IPPORT_RJE 77 41 #define IPPORT_FINGER 79 42 #define IPPORT_TTYLINK 87 43 #define IPPORT_SUPDUP 95 44 45 #define IPPORT_RESERVED 1024 46 47 /* 48 * Link numbers 49 */ 50 #define IMPLINK_IP 155 51 #define IMPLINK_LOWEXPER 156 52 #define IMPLINK_HIGHEXPER 158 53 54 /* 55 * Internet address (old style... should be updated) 56 */ 57 struct in_addr { 58 union { 59 struct { u_char s_b1,s_b2,s_b3,s_b4; } S_un_b; 60 struct { u_short s_w1,s_w2; } S_un_w; 61 u_long S_addr; 62 } S_un; 63 #define s_addr S_un.S_addr /* can be used for most tcp & ip code */ 64 #ifdef vax 65 #define s_host S_un.S_un_b.s_b2 /* host on imp */ 66 #define s_net S_un.S_un_b.s_b1 /* network */ 67 #define s_imp S_un.S_un_w.s_w2 /* imp */ 68 #endif 69 }; 70 71 #define INADDR_ANY 0x00000000 72 73 /* 74 * Socket address, internet style. 75 */ 76 struct sockaddr_in { 77 short sin_family; 78 u_short sin_port; 79 struct in_addr sin_addr; 80 char sin_zero[8]; 81 }; 82