res_querydomain()

The res_querydomain() call queries the concatenation of name and domain.

Syntax

#include <sys\types.h>
#include <netinet\in.h>
#include <arpa\nameser.h>
#include <resolv.h>
int res_querydomain(name, domain class, type, answer, anslen)
char *name;
char *domain;
int class;
int type;
u_char *answer;
int anslen;

Parameters

domain

Domain name.

Host name.

Specifies one of the following values:

C_IN

Specifies the ARPA Internet.
C_CHAOS
Specifies the Chaos network at MIT.
type
Requires one of the following values:

T_A

Host address
T_NS
Authoritative server
T_MD
Mail destination
T_MF
Mail forwarder
T_CNAME
Canonical name
T_SOA
Start-of-authority zone
T_MB
Mailbox-domain name
T_MG
Mail-group member
T_MR
Mail-rename name
T_NULL
Null resource record
T_WKS
Well-known service
T_PTR
Domain name pointer
T_HINFO
Host information
T_MINFO
Mailbox information
T_MX
Mail-routing information
T_UINFO
User (finger command) information
T_UID
User ID
T_GID
Group ID
answer
Points to an address where the response is stored.
anslen
Specifies the size of the answer buffer.

Description

The res_querydomain() call concatenates name and domain, removing a trailing dot from name if domain is null. The res_querydomain() call then calls res_query() to build and perform the query.

Return Values

The value 0 indicates success; the value -1 indicates an error. The h_errno() value is set to the appropriate error code.

Related Calls

dn_comp() dn_expand()
dn_find()
dn_skipname()


• getlong()
  
• getshort()
  putlong()
  putshort()
  res_init()
  res_mkquery()
  res_search()
  res_send()

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