osf1 man page for res_send

res_send(3)						     Library Functions Manual						       res_send(3)

NAME
       res_send - Sends a query to a name server and retrieves a response

LIBRARY
       Standard C Library (libc.a, libc.so)

SYNOPSIS
       #include <sys/types.h> #include <netinet/in.h> #include <arpa/nameser.h> #include <resolv.h>
       int res_send (	   const u_char *msg_ptr,      int msg_len,	 u_char *answer,      int ans_len );

PARAMETERS
       Points  to the beginning of a message.  Specifies the length of the message.  Points to an address where the response is stored.  Specifies
       the size of the answer area.

DESCRIPTION
       The res_send() function sends a query to name servers and calls the res_init() function if the RES_INIT option of the _res  data  structure
       is not set.  This function sends the query to the local name server and handles timeouts and retries.

       The res_send() function is one of a set of subroutines that form the resolver, a set of functions that resolve domain names.  Global infor-
       mation that is used by the resolver functions is kept in the _res data structure.  The	/include/resolv.h  file  contains  the	_res  data
       structure definition.

RETURN VALUES
       Upon  successful completion, the res_send() function returns the length of the message.	Otherwise, -1 is returned and the h_errno external
       variable is set with an error code, if any.  Error code values and reasons are defined in <netdb.h>.

FILES
       Contains general name server and domain name information.

RELATED INFORMATION
       Functions:  dn_comp(3),	dn_expand(3),  dn_find(3),  dn_skipname(3),  _getlong(3),  _getshort(3),  putlong(3),  putshort(3),   res_init(3),
       res_mkquery(3), res_query(3), res_search(3).  delim off

																       res_send(3)