forked from unpbook/unpv13e
-
Notifications
You must be signed in to change notification settings - Fork 0
/
addrinfo.h
48 lines (41 loc) · 1.92 KB
/
addrinfo.h
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
#ifndef __addrinfo_h
#define __addrinfo_h
/*
* Everything here really belongs in <netdb.h>.
* These defines are separate for now, to avoid having to modify the
* system's header.
*/
struct addrinfo {
int ai_flags; /* AI_PASSIVE, AI_CANONNAME */
int ai_family; /* PF_xxx */
int ai_socktype; /* SOCK_xxx */
int ai_protocol; /* IPPROTO_xxx for IPv4 and IPv6 */
size_t ai_addrlen; /* length of ai_addr */
char *ai_canonname; /* canonical name for host */
struct sockaddr *ai_addr; /* binary address */
struct addrinfo *ai_next; /* next structure in linked list */
};
/* following for getaddrinfo() */
#define AI_PASSIVE 1 /* socket is intended for bind() + listen() */
#define AI_CANONNAME 2 /* return canonical name */
/* following for getnameinfo() */
#define NI_MAXHOST 1025 /* max hostname returned */
#define NI_MAXSERV 32 /* max service name returned */
#define NI_NOFQDN 1 /* do not return FQDN */
#define NI_NUMERICHOST 2 /* return numeric form of hostname */
#define NI_NAMEREQD 4 /* return error if hostname not found */
#define NI_NUMERICSERV 8 /* return numeric form of service name */
#define NI_DGRAM 16 /* datagram service for getservbyname() */
/* error returns */
#define EAI_ADDRFAMILY 1 /* address family for host not supported */
#define EAI_AGAIN 2 /* temporary failure in name resolution */
#define EAI_BADFLAGS 3 /* invalid value for ai_flags */
#define EAI_FAIL 4 /* non-recoverable failure in name resolution */
#define EAI_FAMILY 5 /* ai_family not supported */
#define EAI_MEMORY 6 /* memory allocation failure */
#define EAI_NODATA 7 /* no address associated with host */
#define EAI_NONAME 8 /* host nor service provided, or not known */
#define EAI_SERVICE 9 /* service not supported for ai_socktype */
#define EAI_SOCKTYPE 10 /* ai_socktype not supported */
#define EAI_SYSTEM 11 /* system error returned in errno */
#endif /* __addrinfo_h */