+++ /dev/null
-/**
- * lwip DNS resolver header file.
-
- * Author: Jim Pettinato
- * April 2007
-
- * ported from uIP resolv.c Copyright (c) 2002-2003, Adam Dunkels.
- *
- * 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.
- */
-
-#ifndef __LWIP_DNS_H__
-#define __LWIP_DNS_H__
-
-#include "lwip/opt.h"
-
-#if LWIP_DNS /* don't build if not configured for use in lwipopts.h */
-
-/** DNS timer period */
-#define DNS_TMR_INTERVAL 1000
-
-/** DNS field TYPE used for "Resource Records" */
-#define DNS_RRTYPE_A 1 /* a host address */
-#define DNS_RRTYPE_NS 2 /* an authoritative name server */
-#define DNS_RRTYPE_MD 3 /* a mail destination (Obsolete - use MX) */
-#define DNS_RRTYPE_MF 4 /* a mail forwarder (Obsolete - use MX) */
-#define DNS_RRTYPE_CNAME 5 /* the canonical name for an alias */
-#define DNS_RRTYPE_SOA 6 /* marks the start of a zone of authority */
-#define DNS_RRTYPE_MB 7 /* a mailbox domain name (EXPERIMENTAL) */
-#define DNS_RRTYPE_MG 8 /* a mail group member (EXPERIMENTAL) */
-#define DNS_RRTYPE_MR 9 /* a mail rename domain name (EXPERIMENTAL) */
-#define DNS_RRTYPE_NULL 10 /* a null RR (EXPERIMENTAL) */
-#define DNS_RRTYPE_WKS 11 /* a well known service description */
-#define DNS_RRTYPE_PTR 12 /* a domain name pointer */
-#define DNS_RRTYPE_HINFO 13 /* host information */
-#define DNS_RRTYPE_MINFO 14 /* mailbox or mail list information */
-#define DNS_RRTYPE_MX 15 /* mail exchange */
-#define DNS_RRTYPE_TXT 16 /* text strings */
-
-/** DNS field CLASS used for "Resource Records" */
-#define DNS_RRCLASS_IN 1 /* the Internet */
-#define DNS_RRCLASS_CS 2 /* the CSNET class (Obsolete - used only for examples in some obsolete RFCs) */
-#define DNS_RRCLASS_CH 3 /* the CHAOS class */
-#define DNS_RRCLASS_HS 4 /* Hesiod [Dyer 87] */
-#define DNS_RRCLASS_FLUSH 0x800 /* Flush bit */
-
-/** Callback which is invoked when a hostname is found.
- * A function of this type must be implemented by the application using the DNS resolver.
- * @param name pointer to the name that was looked up.
- * @param ipaddr pointer to a struct ip_addr containing the IP address of the hostname,
- * or NULL if the name could not be found (or on any other error).
- * @param callback_arg a user-specified callback argument passed to dns_gethostbyname
-*/
-typedef void (*dns_found_callback)(const char *name, struct ip_addr *ipaddr, void *callback_arg);
-
-
-void dns_init(void);
-
-void dns_tmr(void);
-
-void dns_setserver(u8_t numdns, struct ip_addr *dnsserver);
-
-struct ip_addr dns_getserver(u8_t numdns);
-
-err_t dns_gethostbyname(const char *hostname, struct ip_addr *addr,
- dns_found_callback found, void *callback_arg);
-
-#endif /* LWIP_DNS */
-
-#endif /* __LWIP_DNS_H__ */