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Minor changes on DNS client. Coding style & add "response" checking

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This commit is contained in:
fbernon
2007-11-18 15:51:34 +00:00
parent 92401faa72
commit 4e398e2aa9
2 changed files with 62 additions and 45 deletions
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30
src/include/lwip/dns.h
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@@ -44,7 +44,32 @@
#endif
/** DNS message max. size */
#define DNS_MSG_SIZE 512
#define DNS_MSG_SIZE 512
/** 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 */
/* enumerated list of possible result values returned by dns_gethostname() */
typedef enum dns_result {
@@ -53,6 +78,7 @@ typedef enum dns_result {
DNS_COMPLETE
}DNS_RESULT;
/* initializes the resolver */
err_t dns_init(void);
@@ -68,7 +94,7 @@ u32_t dns_getserver(u8_t numdns);
/* returns IP for host 'name' only if already in table */
u32_t dns_lookup(const char *name);
/* resolove a host 'name' in ip address */
/* resolves a host 'name' in ip address */
DNS_RESULT dns_gethostbyname(const char *hostName, struct ip_addr *addr,
void (*found)(const char *name, struct ip_addr *ipaddr, void *arg),
void *arg);