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task #12243: DNS/IPv6: added support for AAAA records

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This commit is contained in:
goldsimon
2015-09-04 12:16:14 +02:00
parent c8cd67c989
commit dd3725a452
4 changed files with 205 additions and 48 deletions
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16
src/include/lwip/dns.h
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@@ -62,6 +62,7 @@ extern "C" {
#define DNS_RRTYPE_MINFO 14 /* mailbox or mail list information */
#define DNS_RRTYPE_MX 15 /* mail exchange */
#define DNS_RRTYPE_TXT 16 /* text strings */
#define DNS_RRTYPE_AAAA 28 /* IPv6 address */
/** DNS field CLASS used for "Resource Records" */
#define DNS_RRCLASS_IN 1 /* the Internet */
@@ -70,6 +71,12 @@ extern "C" {
#define DNS_RRCLASS_HS 4 /* Hesiod [Dyer 87] */
#define DNS_RRCLASS_FLUSH 0x800 /* Flush bit */
/* DNS resolve types: */
#define LWIP_DNS_ADDRTYPE_IPV4_IPV6 0 /* try to resolve IPv4 first, try IPv6 if IPv4 fails only */
#define LWIP_DNS_ADDRTYPE_IPV6_IPV4 0xFF /* try to resolve IPv6 first, try IPv4 if IPv6 fails only */
#define LWIP_DNS_ADDRTYPE_IPV4 DNS_RRTYPE_A
#define LWIP_DNS_ADDRTYPE_IPV6 DNS_RRTYPE_AAAA
#if DNS_LOCAL_HOSTLIST
/** struct used for local host-list */
struct local_hostlist_entry {
@@ -102,6 +109,15 @@ void dns_setserver(u8_t numdns, ip_addr_t *dnsserver);
ip_addr_t dns_getserver(u8_t numdns);
err_t dns_gethostbyname(const char *hostname, ip_addr_t *addr,
dns_found_callback found, void *callback_arg);
#if LWIP_IPV4 && LWIP_IPV6
err_t dns_gethostbyname_addrtype(const char *hostname, ip_addr_t *addr,
dns_found_callback found, void *callback_arg,
u8_t dns_addrtype);
#else /* LWIP_IPV4 && LWIP_IPV6 */
#define dns_gethostbyname_addrtype(hostname, addr, found, callback_arg, dns_addrtype) \
dns_gethostbyname(hostname, addr, found, callback_arg)
#endif /* LWIP_IPV4 && LWIP_IPV6 */
#if DNS_LOCAL_HOSTLIST && DNS_LOCAL_HOSTLIST_IS_DYNAMIC
int dns_local_removehost(const char *hostname, const ip_addr_t *addr);

5
src/include/lwip/opt.h
View File

@@ -1027,8 +1027,9 @@
* byte order).
*
* Instead, you can also use an external function:
* #define DNS_LOOKUP_LOCAL_EXTERN(x) extern u32_t my_lookup_function(const char *name)
* that returns the IP address or INADDR_NONE if not found.
* #define DNS_LOOKUP_LOCAL_EXTERN(x) extern int my_lookup_function(const char *name, ip_addr_t* result, u8_t reqtype)
* that provides the IP address, returns 1 if found or 0 if not found and gets
* the type of the requested address passed (see LWIP_DNS_ADDRTYPE_*)
*/
#ifndef DNS_LOCAL_HOSTLIST
#define DNS_LOCAL_HOSTLIST 0