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/* $Id$ */

/* Copyright 1998 by the Massachusetts Institute of Technology.
*
* Permission to use, copy, modify, and distribute this
* software and its documentation for any purpose and without
* fee is hereby granted, provided that the above copyright
* notice appear in all copies and that both that copyright
* notice and this permission notice appear in supporting
* documentation, and that the name of M.I.T. not be used in
* advertising or publicity pertaining to distribution of the
* software without specific, written prior permission.
* M.I.T. makes no representations about the suitability of
* this software for any purpose. It is provided "as is"
* without express or implied warranty.
*/

#include "setup.h"

#include <stdlib.h>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif

#include "ares.h"
#include "ares_private.h"

void ares__close_sockets(ares_channel channel, struct server_state *server)
{
  struct send_request *sendreq;

  /* Free all pending output buffers. */
  while (server->qhead)
    {
      /* Advance server->qhead; pull out query as we go. */
      sendreq = server->qhead;
      server->qhead = sendreq->next;
      free(sendreq);
    }
  server->qtail = NULL;

  /* Reset any existing input buffer. */
  if (server->tcp_buffer)
    free(server->tcp_buffer);
  server->tcp_buffer = NULL;
  server->tcp_lenbuf_pos = 0;

  /* Close the TCP and UDP sockets. */
  if (server->tcp_socket != ARES_SOCKET_BAD)
    {
      SOCK_STATE_CALLBACK(channel, server->tcp_socket, 0, 0);
      closesocket(server->tcp_socket);
      server->tcp_socket = ARES_SOCKET_BAD;
    }
  if (server->udp_socket != ARES_SOCKET_BAD)
    {
      SOCK_STATE_CALLBACK(channel, server->udp_socket, 0, 0);
      closesocket(server->udp_socket);
      server->udp_socket = ARES_SOCKET_BAD;
    }
}
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