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SourceVuESP-IDF Framework and Examplesrestful_server samplemdns_query_a()

mdns_query_a() function

Query mDNS for A record

Syntax

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Summary

Declaration

Definition

from mdns.h:843

esp_err_t mdns_query_a(const char *host_name, uint32_t timeout, esp_ip4_addr_t *addr);

Implemented in mdns.c:6940

Arguments

Argument

Declared as

Description

host_name

const char *

host name to look for

timeout

uint32_t

time in milliseconds to wait for answer.

addr

esp_ip4_addr_t *

pointer to the resulting IP4 address

Return value

- ESP_OK success - ESP_ERR_INVALID_STATE mDNS is not running - ESP_ERR_NO_MEM memory error - ESP_ERR_INVALID_ARG parameter error

References

Code

Location

Referrer

esp_err_t mdns_query_a(const char *name, uint32_t timeout, esp_ip4_addr_t *addr)

mdns.c:6940

esp_err_t mdns_query_a(const char *host_name, uint32_t timeout, esp_ip4_addr_t *addr);

mdns.h:843

esp_err_t err = mdns_query_a(hostname, timeout, &addr);

mdns_console.c:85

cmd_mdns_query_a()

Call Tree

mdns_query_a() is called by 1 function and calls 5 functions:

mdns_query_a()

mdns_query_results_free()

_str_null_or_empty()

Data Use

mdns_query_a() reads 13 variables and writes 1 variable:

esp_log_level_t::ESP_LOG_ERROR

esp_log_level_t::ESP_LOG_WARN

esp_log_level_t::ESP_LOG_INFO

esp_log_level_t::ESP_LOG_DEBUG

esp_log_level_t::ESP_LOG_VERBOSE

mdns_query_a()

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