Result callbacks. More...

#include <dns_resolve.h>

Data Fields
struct k_work_delayable	timer
	Timeout timer.

struct dns_resolve_context *	ctx
	Back pointer to ctx, needed in timeout handler.

dns_resolve_cb_t	cb
	Result callback.

void *	user_data
	User data.

k_timeout_t	timeout
	TX timeout.

const char *	query
	String containing the thing to resolve like www.example.com.

enum dns_query_type	query_type
	Query type.

uint16_t	id
	DNS id of this query.

uint16_t	query_hash
	Hash of the DNS name + query type we are querying.

Detailed Description

Result callbacks.

We have multiple callbacks here so that it is possible to do multiple queries at the same time.

Contents of this structure can be inspected and changed only when the lock is held.

Field Documentation

◆ cb

dns_resolve_cb_t dns_resolve_context::dns_pending_query::cb

Result callback.

A null value indicates the slot is not in use.

◆ ctx

struct dns_resolve_context* dns_resolve_context::dns_pending_query::ctx

Back pointer to ctx, needed in timeout handler.

◆ id

uint16_t dns_resolve_context::dns_pending_query::id

DNS id of this query.

◆ query

const char* dns_resolve_context::dns_pending_query::query

String containing the thing to resolve like www.example.com.

This is set to a non-null value when the query is started, and is not used thereafter.

If the query completed at a point where the work item was still pending the pointer is cleared to indicate that the query is complete, but release of the query slot will be deferred until a request for a slot determines that the work item has been released.

◆ query_hash

uint16_t dns_resolve_context::dns_pending_query::query_hash

Hash of the DNS name + query type we are querying.

This hash is calculated so we can match the response that we are receiving. This is needed mainly for mDNS which is setting the DNS id to 0, which means that the id alone cannot be used to find correct pending query.

◆ query_type

enum dns_query_type dns_resolve_context::dns_pending_query::query_type

Query type.

◆ timeout

k_timeout_t dns_resolve_context::dns_pending_query::timeout

TX timeout.

◆ timer

struct k_work_delayable dns_resolve_context::dns_pending_query::timer

Timeout timer.

◆ user_data

void* dns_resolve_context::dns_pending_query::user_data

User data.

The documentation for this struct was generated from the following file:

include/zephyr/net/dns_resolve.h

Data Fields