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#include <sys/types.h>
#include <netinet/in.h>
#include <arpa/nameser.h>
#include <resolv.h>
dn_find() (
char *exp_domain_name,
char *message,
char **domain_names,
char **end_ptr );
The dn_find() (domain name find) function searches for an expanded domain name from a list of previously compressed names. An application program calls the dn_find() function indirectly using the dn_comp() function. If an expanded domain name is found, the dn_comp() function returns the offset from the message parameter.
The dn_find() function is one of a set of subroutines that form the resolver, a set of functions that resolves domain names. Global information used by the resolver functions resides in the _res data structure. The include/resolv.h file contains the _res data structure definition.
Upon successful completion, the dn_find() function returns the offset from the message parameter. Otherwise, the dn_find() function returns a value of -1.
Functions: res_init(3), res_mkquery(3), res_send(3), dn_comp(3), dn_expand(3), _getshort(3), _getlong(3), putshort(3), putlong(3), dn_skipname(3)
Commands: named(8) delim off