text: /**
   * \addtogroup resolv
   * @{
   */
  /**
   * \file
   * DNS resolver code header file.
   * \author Adam Dunkels <adam@dunkels.com>
   */
  
  /*
   * Copyright (c) 2002-2003, Adam Dunkels.
   * All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer.
   * 2. Redistributions in binary form must reproduce the above copyright
   *    notice, this list of conditions and the following disclaimer in the
   *    documentation and/or other materials provided with the distribution.
   * 3. The name of the author may not be used to endorse or promote
   *    products derived from this software without specific prior
   *    written permission.
   *
   * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
   * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
   * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
   * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
   * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
   * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
   * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
   * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
   * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   *
   * This file is part of the uIP TCP/IP stack.
   *
   * $Id: resolv.h,v 1.4 2006/06/11 21:46:37 adam Exp $
   *
   */
  #ifndef __RESOLV_H__
  #define __RESOLV_H__
  
  void resolv_appcall(void);
  
  #include "uipopt.h"
  
  /**
   * Callback function which is called when a hostname is found.
   *
   * This function must be implemented by the module that uses the DNS
   * resolver. It is called when a hostname is found, or when a hostname
   * was not found.
   *
   * \param name A pointer to the name that was looked up.  \param
   * ipaddr A pointer to a 4-byte array containing the IP address of the
   * hostname, or NULL if the hostname could not be found.
   */
  void resolv_found(char *name, u16_t *ipaddr);
  
  /* Functions. */
  void resolv_conf(u16_t *dnsserver);
  u16_t *resolv_getserver(void);
  void resolv_init(void);
  u16_t *resolv_lookup(char *name);
  void resolv_query(char *name);
  
  #endif /* __RESOLV_H__ */
  
  /** @} */
  