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host_serv.lc
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host_serv.lc
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/* include host_serv */
#include "unp.h"## 1 ##src/lib/host_serv.c##
struct addrinfo *## 2 ##src/lib/host_serv.c##
host_serv(const char *host, const char *serv, int family, int socktype)## 3 ##src/lib/host_serv.c##
{## 4 ##src/lib/host_serv.c##
int n;## 5 ##src/lib/host_serv.c##
struct addrinfo hints, *res;## 6 ##src/lib/host_serv.c##
bzero(&hints, sizeof(struct addrinfo));## 7 ##src/lib/host_serv.c##
hints.ai_flags = AI_CANONNAME; /* always return canonical name */## 8 ##src/lib/host_serv.c##
hints.ai_family = family; /* AF_UNSPEC, AF_INET, AF_INET6, etc. */## 9 ##src/lib/host_serv.c##
hints.ai_socktype = socktype; /* 0, SOCK_STREAM, SOCK_DGRAM, etc. */## 10 ##src/lib/host_serv.c##
if ((n = getaddrinfo(host, serv, &hints, &res)) != 0)## 11 ##src/lib/host_serv.c##
return (NULL);## 12 ##src/lib/host_serv.c##
return (res); /* return pointer to first on linked list */## 13 ##src/lib/host_serv.c##
}## 14 ##src/lib/host_serv.c##
/* end host_serv */
/*## 15 ##src/lib/host_serv.c##
* There is no easy way to pass back the integer return code from## 16 ##src/lib/host_serv.c##
* getaddrinfo() in the function above, short of adding another argument## 17 ##src/lib/host_serv.c##
* that is a pointer, so the easiest way to provide the wrapper function## 18 ##src/lib/host_serv.c##
* is just to duplicate the simple function as we do here.## 19 ##src/lib/host_serv.c##
*/## 20 ##src/lib/host_serv.c##
struct addrinfo *## 21 ##src/lib/host_serv.c##
Host_serv(const char *host, const char *serv, int family, int socktype)## 22 ##src/lib/host_serv.c##
{## 23 ##src/lib/host_serv.c##
int n;## 24 ##src/lib/host_serv.c##
struct addrinfo hints, *res;## 25 ##src/lib/host_serv.c##
bzero(&hints, sizeof(struct addrinfo));## 26 ##src/lib/host_serv.c##
hints.ai_flags = AI_CANONNAME; /* always return canonical name */## 27 ##src/lib/host_serv.c##
hints.ai_family = family; /* 0, AF_INET, AF_INET6, etc. */## 28 ##src/lib/host_serv.c##
hints.ai_socktype = socktype; /* 0, SOCK_STREAM, SOCK_DGRAM, etc. */## 29 ##src/lib/host_serv.c##
if ((n = getaddrinfo(host, serv, &hints, &res)) != 0)## 30 ##src/lib/host_serv.c##
err_quit("host_serv error for %s, %s: %s",## 31 ##src/lib/host_serv.c##
(host == NULL) ? "(no hostname)" : host,## 32 ##src/lib/host_serv.c##
(serv == NULL) ? "(no service name)" : serv,## 33 ##src/lib/host_serv.c##
gai_strerror(n));## 34 ##src/lib/host_serv.c##
return (res); /* return pointer to first on linked list */## 35 ##src/lib/host_serv.c##
}## 36 ##src/lib/host_serv.c##