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res_send(3)
NAME
  res_send - Sends a query to a name server and retrieves a response

LIBRARY
  Standard C Library (libc.a)

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

PARAMETERS
  msg_ptr   Points to the beginning of a message.

  msg_len   Specifies the length of the message.

  answer    Points to an address where the response is stored.

  ans_len   Specifies the size of the answer area.

DESCRIPTION
  The res_send() function sends a query toname 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 information
  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.

FILES
  /etc/resolv.conf
	    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)