Initial public release of the 2024A software.
This commit is contained in:
Joe Kearney
parent
7b9ad3edfd
commit
303e9e1dad
361 changed files with 60083 additions and 2 deletions
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idf_component_register(SRCS "mdns_example_main.c"
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INCLUDE_DIRS ".")
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menu "Example Configuration"
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orsource "$IDF_PATH/examples/common_components/env_caps/$IDF_TARGET/Kconfig.env_caps"
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config MDNS_HOSTNAME
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string "mDNS Hostname"
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default "esp32-mdns"
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help
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mDNS Hostname for example to use
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config MDNS_INSTANCE
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string "mDNS Instance Name"
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default "ESP32 with mDNS"
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help
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mDNS Instance Name for example to use
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config MDNS_PUBLISH_DELEGATE_HOST
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bool "Publish a delegated host"
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help
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Enable publishing a delegated host other than ESP32.
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The example will also add a mock service for this host.
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config MDNS_RESOLVE_TEST_SERVICES
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bool "Resolve test services"
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default n
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help
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Enable resolving test services on startup.
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These services are advertized and evaluated in automated tests.
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When executed locally, these will not be resolved and warnings appear in the log.
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Please set to false to disable initial querying to avoid warnings.
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config MDNS_ADD_MAC_TO_HOSTNAME
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bool "Add mac suffix to hostname"
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default n
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help
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If enabled, a portion of MAC address is added to the hostname, this is used
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for evaluation of tests in CI
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config MDNS_BUTTON_GPIO
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int "Button GPIO to trigger querries"
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range ENV_GPIO_RANGE_MIN ENV_GPIO_IN_RANGE_MAX
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default 0
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help
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Set the GPIO number used as mDNS test button
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config MDNS_ADD_CUSTOM_NETIF
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bool "Add user netif to mdns service"
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default n
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help
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If enabled, we try to add a custom netif to mdns service.
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Note that for using with common connection example code, we have to disable
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all predefined interfaces in mdns component setup (since we're adding one
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of the default interfaces)
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endmenu
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dependencies:
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## Required IDF version
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idf: ">=5.0"
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espressif/mdns:
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version: "^1.0.0"
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override_path: "../../../"
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protocol_examples_common:
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path: ${IDF_PATH}/examples/common_components/protocol_examples_common
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/*
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* SPDX-FileCopyrightText: 2022-2023 Espressif Systems (Shanghai) CO LTD
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*
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* SPDX-License-Identifier: Unlicense OR CC0-1.0
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*/
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/*
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* MDNS-SD Query and advertise Example
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*/
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#include <string.h>
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#include "freertos/FreeRTOS.h"
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#include "freertos/task.h"
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#include "esp_netif_ip_addr.h"
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#include "esp_mac.h"
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#include "esp_event.h"
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#include "esp_log.h"
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#include "nvs_flash.h"
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#include "esp_netif.h"
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#include "protocol_examples_common.h"
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#include "mdns.h"
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#include "driver/gpio.h"
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#include "netdb.h"
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#if ESP_IDF_VERSION < ESP_IDF_VERSION_VAL(5, 1, 0)
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/* CONFIG_LWIP_IPV4 was introduced in IDF v5.1, set CONFIG_LWIP_IPV4 to 1 by default for IDF v5.0 */
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#ifndef CONFIG_LWIP_IPV4
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#define CONFIG_LWIP_IPV4 1
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#endif // CONFIG_LWIP_IPV4
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#endif // ESP_IDF_VERSION < ESP_IDF_VERSION_VAL(5, 1, 0)
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#define EXAMPLE_MDNS_INSTANCE CONFIG_MDNS_INSTANCE
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#define EXAMPLE_BUTTON_GPIO CONFIG_MDNS_BUTTON_GPIO
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static const char *TAG = "mdns-test";
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static char *generate_hostname(void);
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#if CONFIG_MDNS_RESOLVE_TEST_SERVICES == 1
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static void query_mdns_host_with_gethostbyname(char *host);
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static void query_mdns_host_with_getaddrinfo(char *host);
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#endif
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static void initialise_mdns(void)
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{
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char *hostname = generate_hostname();
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//initialize mDNS
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ESP_ERROR_CHECK( mdns_init() );
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//set mDNS hostname (required if you want to advertise services)
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ESP_ERROR_CHECK( mdns_hostname_set(hostname) );
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ESP_LOGI(TAG, "mdns hostname set to: [%s]", hostname);
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//set default mDNS instance name
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ESP_ERROR_CHECK( mdns_instance_name_set(EXAMPLE_MDNS_INSTANCE) );
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//structure with TXT records
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mdns_txt_item_t serviceTxtData[3] = {
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{"board", "esp32"},
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{"u", "user"},
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{"p", "password"}
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};
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//initialize service
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ESP_ERROR_CHECK( mdns_service_add("ESP32-WebServer", "_http", "_tcp", 80, serviceTxtData, 3) );
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ESP_ERROR_CHECK( mdns_service_subtype_add_for_host("ESP32-WebServer", "_http", "_tcp", NULL, "_server") );
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#if CONFIG_MDNS_MULTIPLE_INSTANCE
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ESP_ERROR_CHECK( mdns_service_add("ESP32-WebServer1", "_http", "_tcp", 80, NULL, 0) );
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#endif
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#if CONFIG_MDNS_PUBLISH_DELEGATE_HOST
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char *delegated_hostname;
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if (-1 == asprintf(&delegated_hostname, "%s-delegated", hostname)) {
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abort();
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}
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mdns_ip_addr_t addr4, addr6;
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esp_netif_str_to_ip4("10.0.0.1", &addr4.addr.u_addr.ip4);
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addr4.addr.type = ESP_IPADDR_TYPE_V4;
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esp_netif_str_to_ip6("fd11:22::1", &addr6.addr.u_addr.ip6);
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addr6.addr.type = ESP_IPADDR_TYPE_V6;
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addr4.next = &addr6;
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addr6.next = NULL;
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ESP_ERROR_CHECK( mdns_delegate_hostname_add(delegated_hostname, &addr4) );
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ESP_ERROR_CHECK( mdns_service_add_for_host("test0", "_http", "_tcp", delegated_hostname, 1234, serviceTxtData, 3) );
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free(delegated_hostname);
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#endif // CONFIG_MDNS_PUBLISH_DELEGATE_HOST
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//add another TXT item
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ESP_ERROR_CHECK( mdns_service_txt_item_set("_http", "_tcp", "path", "/foobar") );
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//change TXT item value
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ESP_ERROR_CHECK( mdns_service_txt_item_set_with_explicit_value_len("_http", "_tcp", "u", "admin", strlen("admin")) );
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free(hostname);
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}
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/* these strings match mdns_ip_protocol_t enumeration */
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static const char *ip_protocol_str[] = {"V4", "V6", "MAX"};
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static void mdns_print_results(mdns_result_t *results)
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{
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mdns_result_t *r = results;
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mdns_ip_addr_t *a = NULL;
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int i = 1, t;
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while (r) {
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if (r->esp_netif) {
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printf("%d: Interface: %s, Type: %s, TTL: %" PRIu32 "\n", i++, esp_netif_get_ifkey(r->esp_netif),
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ip_protocol_str[r->ip_protocol], r->ttl);
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}
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if (r->instance_name) {
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printf(" PTR : %s.%s.%s\n", r->instance_name, r->service_type, r->proto);
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}
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if (r->hostname) {
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printf(" SRV : %s.local:%u\n", r->hostname, r->port);
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}
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if (r->txt_count) {
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printf(" TXT : [%zu] ", r->txt_count);
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for (t = 0; t < r->txt_count; t++) {
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printf("%s=%s(%d); ", r->txt[t].key, r->txt[t].value ? r->txt[t].value : "NULL", r->txt_value_len[t]);
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}
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printf("\n");
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}
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a = r->addr;
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while (a) {
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if (a->addr.type == ESP_IPADDR_TYPE_V6) {
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printf(" AAAA: " IPV6STR "\n", IPV62STR(a->addr.u_addr.ip6));
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} else {
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printf(" A : " IPSTR "\n", IP2STR(&(a->addr.u_addr.ip4)));
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}
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a = a->next;
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}
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r = r->next;
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}
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}
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static void query_mdns_service(const char *service_name, const char *proto)
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{
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ESP_LOGI(TAG, "Query PTR: %s.%s.local", service_name, proto);
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mdns_result_t *results = NULL;
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esp_err_t err = mdns_query_ptr(service_name, proto, 3000, 20, &results);
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if (err) {
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ESP_LOGE(TAG, "Query Failed: %s", esp_err_to_name(err));
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return;
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}
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if (!results) {
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ESP_LOGW(TAG, "No results found!");
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return;
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}
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mdns_print_results(results);
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mdns_query_results_free(results);
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}
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#if CONFIG_MDNS_PUBLISH_DELEGATE_HOST
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static void lookup_mdns_delegated_service(const char *service_name, const char *proto)
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{
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ESP_LOGI(TAG, "Lookup delegated service: %s.%s.local", service_name, proto);
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mdns_result_t *results = NULL;
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esp_err_t err = mdns_lookup_delegated_service(NULL, service_name, proto, 20, &results);
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if (err) {
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ESP_LOGE(TAG, "Lookup Failed: %s", esp_err_to_name(err));
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return;
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}
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if (!results) {
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ESP_LOGW(TAG, "No results found!");
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return;
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}
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mdns_print_results(results);
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mdns_query_results_free(results);
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}
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#endif // CONFIG_MDNS_PUBLISH_DELEGATE_HOST
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static void lookup_mdns_selfhosted_service(const char *service_name, const char *proto)
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{
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ESP_LOGI(TAG, "Lookup selfhosted service: %s.%s.local", service_name, proto);
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mdns_result_t *results = NULL;
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esp_err_t err = mdns_lookup_selfhosted_service(NULL, service_name, proto, 20, &results);
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if (err) {
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ESP_LOGE(TAG, "Lookup Failed: %s", esp_err_to_name(err));
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return;
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}
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if (!results) {
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ESP_LOGW(TAG, "No results found!");
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return;
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}
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mdns_print_results(results);
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mdns_query_results_free(results);
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}
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static bool check_and_print_result(mdns_search_once_t *search)
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{
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// Check if any result is available
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mdns_result_t *result = NULL;
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if (!mdns_query_async_get_results(search, 0, &result, NULL)) {
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return false;
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}
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if (!result) { // search timeout, but no result
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return true;
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}
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// If yes, print the result
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mdns_ip_addr_t *a = result->addr;
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while (a) {
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if (a->addr.type == ESP_IPADDR_TYPE_V6) {
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printf(" AAAA: " IPV6STR "\n", IPV62STR(a->addr.u_addr.ip6));
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} else {
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printf(" A : " IPSTR "\n", IP2STR(&(a->addr.u_addr.ip4)));
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}
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a = a->next;
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}
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// and free the result
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mdns_query_results_free(result);
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return true;
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}
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static void query_mdns_hosts_async(const char *host_name)
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{
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ESP_LOGI(TAG, "Query both A and AAA: %s.local", host_name);
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mdns_search_once_t *s_a = mdns_query_async_new(host_name, NULL, NULL, MDNS_TYPE_A, 1000, 1, NULL);
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mdns_search_once_t *s_aaaa = mdns_query_async_new(host_name, NULL, NULL, MDNS_TYPE_AAAA, 1000, 1, NULL);
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while (s_a || s_aaaa) {
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if (s_a && check_and_print_result(s_a)) {
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ESP_LOGI(TAG, "Query A %s.local finished", host_name);
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mdns_query_async_delete(s_a);
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s_a = NULL;
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}
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if (s_aaaa && check_and_print_result(s_aaaa)) {
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ESP_LOGI(TAG, "Query AAAA %s.local finished", host_name);
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mdns_query_async_delete(s_aaaa);
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s_aaaa = NULL;
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}
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vTaskDelay(50 / portTICK_PERIOD_MS);
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}
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}
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#ifdef CONFIG_LWIP_IPV4
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static void query_mdns_host(const char *host_name)
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{
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ESP_LOGI(TAG, "Query A: %s.local", host_name);
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struct esp_ip4_addr addr;
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addr.addr = 0;
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esp_err_t err = mdns_query_a(host_name, 2000, &addr);
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if (err) {
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if (err == ESP_ERR_NOT_FOUND) {
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ESP_LOGW(TAG, "%s: Host was not found!", esp_err_to_name(err));
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return;
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}
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ESP_LOGE(TAG, "Query Failed: %s", esp_err_to_name(err));
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return;
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}
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ESP_LOGI(TAG, "Query A: %s.local resolved to: " IPSTR, host_name, IP2STR(&addr));
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}
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#endif // CONFIG_LWIP_IPV4
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static void initialise_button(void)
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{
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gpio_config_t io_conf = {0};
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io_conf.intr_type = GPIO_INTR_DISABLE;
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io_conf.pin_bit_mask = BIT64(EXAMPLE_BUTTON_GPIO);
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io_conf.mode = GPIO_MODE_INPUT;
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io_conf.pull_up_en = 1;
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io_conf.pull_down_en = 0;
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gpio_config(&io_conf);
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}
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static void check_button(void)
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{
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static bool old_level = true;
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bool new_level = gpio_get_level(EXAMPLE_BUTTON_GPIO);
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if (!new_level && old_level) {
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query_mdns_hosts_async("esp32-mdns");
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#ifdef CONFIG_LWIP_IPV4
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query_mdns_host("esp32");
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#endif
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query_mdns_service("_arduino", "_tcp");
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query_mdns_service("_http", "_tcp");
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query_mdns_service("_printer", "_tcp");
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query_mdns_service("_ipp", "_tcp");
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query_mdns_service("_afpovertcp", "_tcp");
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query_mdns_service("_smb", "_tcp");
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query_mdns_service("_ftp", "_tcp");
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query_mdns_service("_nfs", "_tcp");
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#if CONFIG_MDNS_PUBLISH_DELEGATE_HOST
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lookup_mdns_delegated_service("_http", "_tcp");
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#endif // CONFIG_MDNS_PUBLISH_DELEGATE_HOST
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lookup_mdns_selfhosted_service("_http", "_tcp");
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}
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old_level = new_level;
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}
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static void mdns_example_task(void *pvParameters)
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{
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#if CONFIG_MDNS_RESOLVE_TEST_SERVICES == 1
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/* Send initial queries that are started by CI tester */
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#ifdef CONFIG_LWIP_IPV4
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query_mdns_host("tinytester");
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#endif
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query_mdns_host_with_gethostbyname("tinytester-lwip.local");
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query_mdns_host_with_getaddrinfo("tinytester-lwip.local");
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#endif
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while (1) {
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check_button();
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vTaskDelay(50 / portTICK_PERIOD_MS);
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}
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}
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void app_main(void)
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{
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ESP_ERROR_CHECK(nvs_flash_init());
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ESP_ERROR_CHECK(esp_netif_init());
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ESP_ERROR_CHECK(esp_event_loop_create_default());
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initialise_mdns();
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/* This helper function configures Wi-Fi or Ethernet, as selected in menuconfig.
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* Read "Establishing Wi-Fi or Ethernet Connection" section in
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* examples/protocols/README.md for more information about this function.
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*/
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ESP_ERROR_CHECK(example_connect());
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#if defined(CONFIG_MDNS_ADD_CUSTOM_NETIF) && !defined(CONFIG_MDNS_PREDEF_NETIF_STA) && !defined(CONFIG_MDNS_PREDEF_NETIF_ETH)
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/* Demonstration of adding a custom netif to mdns service, but we're adding the default example one,
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* so we must disable all predefined interfaces (PREDEF_NETIF_STA, AP and ETH) first
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*/
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ESP_ERROR_CHECK(mdns_register_netif(EXAMPLE_INTERFACE));
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/* It is not enough to just register the interface, we have to enable is manually.
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* This is typically performed in "GOT_IP" event handler, but we call it here directly
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* since the `EXAMPLE_INTERFACE` netif is connected already, to keep the example simple.
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*/
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ESP_ERROR_CHECK(mdns_netif_action(EXAMPLE_INTERFACE, MDNS_EVENT_ENABLE_IP4 | MDNS_EVENT_ENABLE_IP6));
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ESP_ERROR_CHECK(mdns_netif_action(EXAMPLE_INTERFACE, MDNS_EVENT_ANNOUNCE_IP4 | MDNS_EVENT_ANNOUNCE_IP6));
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#if defined(CONFIG_MDNS_RESPOND_REVERSE_QUERIES)
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ESP_ERROR_CHECK(mdns_netif_action(EXAMPLE_INTERFACE, MDNS_EVENT_IP4_REVERSE_LOOKUP | MDNS_EVENT_IP6_REVERSE_LOOKUP));
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#endif
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#endif // CONFIG_MDNS_ADD_CUSTOM_NETIF
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initialise_button();
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xTaskCreate(&mdns_example_task, "mdns_example_task", 2048, NULL, 5, NULL);
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}
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/** Generate host name based on sdkconfig, optionally adding a portion of MAC address to it.
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* @return host name string allocated from the heap
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*/
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static char *generate_hostname(void)
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{
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#ifndef CONFIG_MDNS_ADD_MAC_TO_HOSTNAME
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return strdup(CONFIG_MDNS_HOSTNAME);
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#else
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uint8_t mac[6];
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char *hostname;
|
||||
esp_read_mac(mac, ESP_MAC_WIFI_STA);
|
||||
if (-1 == asprintf(&hostname, "%s-%02X%02X%02X", CONFIG_MDNS_HOSTNAME, mac[3], mac[4], mac[5])) {
|
||||
abort();
|
||||
}
|
||||
return hostname;
|
||||
#endif
|
||||
}
|
||||
|
||||
#if CONFIG_MDNS_RESOLVE_TEST_SERVICES == 1
|
||||
/**
|
||||
* @brief Executes gethostbyname and displays list of resolved addresses.
|
||||
* Note: This function is used only to test advertised mdns hostnames resolution
|
||||
*/
|
||||
static void query_mdns_host_with_gethostbyname(char *host)
|
||||
{
|
||||
struct hostent *res = gethostbyname(host);
|
||||
if (res) {
|
||||
unsigned int i = 0;
|
||||
while (res->h_addr_list[i] != NULL) {
|
||||
ESP_LOGI(TAG, "gethostbyname: %s resolved to: %s", host,
|
||||
#if defined(CONFIG_LWIP_IPV6) && defined(CONFIG_LWIP_IPV4)
|
||||
res->h_addrtype == AF_INET ? inet_ntoa(*(struct in_addr *) (res->h_addr_list[i])) :
|
||||
inet6_ntoa(*(struct in6_addr *) (res->h_addr_list[i]))
|
||||
#elif defined(CONFIG_LWIP_IPV6)
|
||||
inet6_ntoa(*(struct in6_addr *) (res->h_addr_list[i]))
|
||||
#else
|
||||
inet_ntoa(*(struct in_addr *) (res->h_addr_list[i]))
|
||||
#endif
|
||||
);
|
||||
i++;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* @brief Executes getaddrinfo and displays list of resolved addresses.
|
||||
* Note: This function is used only to test advertised mdns hostnames resolution
|
||||
*/
|
||||
static void query_mdns_host_with_getaddrinfo(char *host)
|
||||
{
|
||||
struct addrinfo hints;
|
||||
struct addrinfo *res;
|
||||
|
||||
memset(&hints, 0, sizeof(hints));
|
||||
hints.ai_family = AF_UNSPEC;
|
||||
hints.ai_socktype = SOCK_STREAM;
|
||||
|
||||
if (!getaddrinfo(host, NULL, &hints, &res)) {
|
||||
while (res) {
|
||||
char *resolved_addr;
|
||||
#if defined(CONFIG_LWIP_IPV6) && defined(CONFIG_LWIP_IPV4)
|
||||
resolved_addr = res->ai_family == AF_INET ?
|
||||
inet_ntoa(((struct sockaddr_in *) res->ai_addr)->sin_addr) :
|
||||
inet6_ntoa(((struct sockaddr_in6 *) res->ai_addr)->sin6_addr);
|
||||
#elif defined(CONFIG_LWIP_IPV6)
|
||||
resolved_addr = inet6_ntoa(((struct sockaddr_in6 *) res->ai_addr)->sin6_addr);
|
||||
#else
|
||||
resolved_addr = inet_ntoa(((struct sockaddr_in *) res->ai_addr)->sin_addr);
|
||||
#endif // CONFIG_LWIP_IPV6
|
||||
ESP_LOGI(TAG, "getaddrinfo: %s resolved to: %s", host, resolved_addr);
|
||||
res = res->ai_next;
|
||||
}
|
||||
}
|
||||
}
|
||||
#endif
|
||||
Loading…
Add table
Add a link
Reference in a new issue