The uIP DNS resolver functions are used to lookup a hostname and map it to a numerical IP address. More...

Macros
#define	RESOLV_CONF_MAX_RETRIES 4
	The maximum number of retries when asking for a name. More...

Functions
static void	newdata (void)

void	resolv_set_hostname (const char *hostname)
	Changes the local hostname advertised by MDNS. More...

const char *	resolv_get_hostname (void)
	Returns the local hostname being advertised via MDNS. More...

void	resolv_query (const char *name)
	Queues a name so that a question for the name will be sent out. More...

resolv_status_t	resolv_lookup (const char name, uip_ipaddr_t *ipaddr)
	Look up a hostname in the array of known hostnames. More...

Variables
process_event_t	resolv_event_found
	Event that is broadcasted when a DNS name has been resolved.

Detailed Description

The uIP DNS resolver functions are used to lookup a hostname and map it to a numerical IP address.

It maintains a list of resolved hostnames that can be queried with the resolv_lookup() function. New hostnames can be resolved using the resolv_query() function.

The event resolv_event_found is posted when a hostname has been resolved. It is up to the receiving process to determine if the correct hostname has been found by calling the resolv_lookup() function with the hostname.

Macro Definition Documentation

#define RESOLV_CONF_MAX_RETRIES 4

The maximum number of retries when asking for a name.

Definition at line 135 of file resolv.c.

Function Documentation

static void newdata ( void )

static

QUESTION HANDLING SECTION

ANSWER HANDLING SECTION

Definition at line 787 of file resolv.c.

References CLOCK_SECOND, clock_seconds(), NULL, process_post(), uip_appdata, UIP_HTONS, uip_htons(), and uip_ipaddr_copy.

const char* resolv_get_hostname ( void )

Returns the local hostname being advertised via MDNS.

Returns: C-string containing the local hostname.

Definition at line 1110 of file resolv.c.

resolv_status_t resolv_lookup	(	const char *	name,
		uip_ipaddr_t **	ipaddr
	)

Look up a hostname in the array of known hostnames.

Note: This function only looks in the internal array of known hostnames, it does not send out a query for the hostname if none was found. The function resolv_query() can be used to send a query for a hostname.

Definition at line 1349 of file resolv.c.

References addr, clock_seconds(), ipaddr, RESOLV_STATUS_CACHED, RESOLV_STATUS_EXPIRED, RESOLV_STATUS_NOT_FOUND, RESOLV_STATUS_RESOLVING, and RESOLV_STATUS_UNCACHED.

void resolv_query ( const char * name )

Queues a name so that a question for the name will be sent out.

Parameters