getaddrinfo.3n (2010 09)

getaddrinfo(3N) getaddrinfo(3N)

is used for name/address resolution, the method used by the functions

getnameinfo()

and getad-

drinfo() to search an address is listed below:

getnameinfo() Sequentially searches the /etc/hosts ﬁle until an address matching the src

parameter is found or until the end of ﬁle is encountered.

getaddrinfo() Sequentially searches the /etc/hosts ﬁle until a host name (ofﬁcial name

or an alias name) matching the name parameter is found or until the end of

ﬁle is encountered. The host names are matched irrespective of upper or lower

case alphabets.

WARNINGS

Obsolescent Interfaces

The following interfaces are included to support existing applications and may be removed in future

releases.

struct hostent *getipnodebyname(const char *name,

int af,

int flags,

int *error_num);

int getipnodebyaddr(const void *src,

size_t len,

int af,

int *error_num);

New applications must use the APIs getaddrinfo()

and getnameinfo() for name/address resolu-

tion.

Obsolescent Directive

The

ipnodes directive, which is used by the getaddrinfo()

and getnameinfo() APIs, may not be

supported in future HP-UX releases. In order to minimize the impact to applications, HP recommends

that you have the same conﬁguration for the

hosts and the ipnodes directives.

AUTHOR

getaddrinfo() was developed by HP.

FILES

/etc/hosts

/etc/services