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- /*
- * DESQview/X Socket Library.
- * Copyright (c) 1991,1992,1993 Quarterdeck Office Systems.
- *
- *
- * Copyright (c) 1983 Regents of the University of California.
- * All rights reserved. The Berkeley software License Agreement
- * specifies the terms and conditions for redistribution.
- */
-
- /*
- * Constants and structures defined by the internet system,
- * Per RFC 790, September 1981.
- */
-
- #ifndef _NETINET_IN_H_
- #define _NETINET_IN_H_
-
- /*
- * Protocols
- */
- #define IPPROTO_TCP 6 /* tcp */
- #define IPPROTO_UDP 17 /* user datagram protocol */
- /*
- * Local port number conventions:
- * Ports < IPPORT_RESERVED are reserved for
- * privileged processes (e.g. root).
- * Ports > IPPORT_USERRESERVED are reserved
- * for servers, not necessarily privileged.
- */
- #define IPPORT_RESERVED 1024
- #define IPPORT_USERRESERVED 5000
-
- /*
- * Definitions of bits in internet address integers.
- * On subnets, the decomposition of addresses to host and net parts
- * is done according to subnet mask, not the masks here.
- */
- #define IN_CLASSA(i) (((long)(i) & 0x80000000) == 0)
- #define IN_CLASSA_NET 0xff000000
- #define IN_CLASSA_NSHIFT 24
- #define IN_CLASSA_HOST 0x00ffffff
- #define IN_CLASSA_MAX 128
-
- #define IN_CLASSB(i) (((long)(i) & 0xc0000000) == 0x80000000)
- #define IN_CLASSB_NET 0xffff0000
- #define IN_CLASSB_NSHIFT 16
- #define IN_CLASSB_HOST 0x0000ffff
- #define IN_CLASSB_MAX 65536
-
- #define IN_CLASSC(i) (((long)(i) & 0xe0000000) == 0xc0000000)
- #define IN_CLASSC_NET 0xffffff00
- #define IN_CLASSC_NSHIFT 8
- #define IN_CLASSC_HOST 0x000000ff
-
- #define IN_CLASSD(i) (((long)(i) & 0xf0000000) == 0xe0000000)
- #define IN_MULTICAST(i) IN_CLASSD(i)
-
- #define IN_EXPERIMENTAL(i) (((long)(i) & 0xe0000000) == 0xe0000000)
- #define IN_BADCLASS(i) (((long)(i) & 0xf0000000) == 0xf0000000)
-
-
- /* Internet Address structure
- */
- struct in_addr {
- union {
- struct { char s_b1,s_b2,s_b3,s_b4; } S_un_b;
- struct { unsigned short s_w1,s_w2; } S_un_w;
- long S_addr;
- } S_un;
- #define s_addr S_un.S_addr /* can be used for most tcp & ip code */
- #define s_host S_un.S_un_b.s_b2 /* host on imp */
- #define s_net S_un.S_un_b.s_b1 /* network */
- #define s_imp S_un.S_un_w.s_w2 /* imp */
- #define s_impno S_un.S_un_b.s_b4 /* imp # */
- #define s_lh S_un.S_un_b.s_b3 /* logical host */
- #define S_baddr S_un.S_un_b
- };
-
- #define INADDR_ANY (u_long)0x00000000
- #define INADDR_BROADCAST (u_long)0xffffffff /* must be masked */
-
- struct sockaddr_in {
- short sin_family;
- unsigned short sin_port;
- struct in_addr sin_addr;
- char sin_zero[8];
- };
-
- #ifndef NO_PROTO
-
- #ifdef __cplusplus /* for C++ V2.0 */
- extern "C" { /* do not leave open across includes */
- #endif /* __cplusplus */
-
- /* Network and machine order conversion routines */
-
- unsigned short htons(unsigned short);
- unsigned short ntohs(unsigned short);
- unsigned long htonl(unsigned long);
- unsigned long ntohl(unsigned long);
-
- /* Inet C functions */
-
- unsigned long inet_addr(const char *);
- unsigned long inet_network(const char *);
- char *inet_ntoa(struct in_addr);
- struct in_addr inet_makeaddr(long, long);
- unsigned long inet_lnaof(struct in_addr);
- unsigned long inet_netof(struct in_addr);
-
- #ifdef __cplusplus /* for C++ V2.0 */
- }
- #endif /* __cplusplus */
-
- #else /* NO_PROTO */
-
- /* Network and machine order conversion routines */
-
- unsigned short htons();
- unsigned short ntohs();
- unsigned long htonl();
- unsigned long ntohl();
-
- /* Inet C functions */
-
- unsigned long inet_addr();
- unsigned long inet_network();
- char *inet_ntoa();
- struct in_addr inet_makeaddr();
- unsigned long inet_lnaof();
- unsigned long inet_netof();
-
- #endif /* NO_PROTO */
-
- #endif /* _NETINET_IN_H_ */