776 lines
28 KiB
C
776 lines
28 KiB
C
/*
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* SPDX-FileCopyrightText: 2015-2022 Espressif Systems (Shanghai) CO LTD
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#ifndef ESP_MDNS_H_
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#define ESP_MDNS_H_
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include <esp_netif.h>
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#define MDNS_TYPE_A 0x0001
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#define MDNS_TYPE_PTR 0x000C
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#define MDNS_TYPE_TXT 0x0010
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#define MDNS_TYPE_AAAA 0x001C
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#define MDNS_TYPE_SRV 0x0021
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#define MDNS_TYPE_OPT 0x0029
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#define MDNS_TYPE_NSEC 0x002F
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#define MDNS_TYPE_ANY 0x00FF
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/**
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* @brief Asynchronous query handle
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*/
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typedef struct mdns_search_once_s mdns_search_once_t;
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typedef enum {
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MDNS_EVENT_ENABLE_IP4 = 1 << 1,
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MDNS_EVENT_ENABLE_IP6 = 1 << 2,
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MDNS_EVENT_ANNOUNCE_IP4 = 1 << 3,
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MDNS_EVENT_ANNOUNCE_IP6 = 1 << 4,
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MDNS_EVENT_DISABLE_IP4 = 1 << 5,
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MDNS_EVENT_DISABLE_IP6 = 1 << 6,
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MDNS_EVENT_IP4_REVERSE_LOOKUP = 1 << 7,
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MDNS_EVENT_IP6_REVERSE_LOOKUP = 1 << 8,
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} mdns_event_actions_t;
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/**
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* @brief mDNS enum to specify the ip_protocol type
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*/
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typedef enum {
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MDNS_IP_PROTOCOL_V4,
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MDNS_IP_PROTOCOL_V6,
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MDNS_IP_PROTOCOL_MAX
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} mdns_ip_protocol_t;
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/**
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* @brief mDNS basic text item structure
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* Used in mdns_service_add()
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*/
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typedef struct {
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const char *key; /*!< item key name */
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const char *value; /*!< item value string */
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} mdns_txt_item_t;
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/**
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* @brief mDNS query linked list IP item
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*/
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typedef struct mdns_ip_addr_s {
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esp_ip_addr_t addr; /*!< IP address */
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struct mdns_ip_addr_s *next; /*!< next IP, or NULL for the last IP in the list */
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} mdns_ip_addr_t;
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/**
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* @brief mDNS query type to be explicitly set to either Unicast or Multicast
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*/
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typedef enum {
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MDNS_QUERY_UNICAST,
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MDNS_QUERY_MULTICAST,
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} mdns_query_transmission_type_t;
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/**
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* @brief mDNS query result structure
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*/
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typedef struct mdns_result_s {
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struct mdns_result_s *next; /*!< next result, or NULL for the last result in the list */
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esp_netif_t *esp_netif; /*!< ptr to corresponding esp-netif */
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uint32_t ttl; /*!< time to live */
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mdns_ip_protocol_t ip_protocol; /*!< ip_protocol type of the interface (v4/v6) */
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// PTR
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char *instance_name; /*!< instance name */
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char *service_type; /*!< service type */
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char *proto; /*!< srevice protocol */
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// SRV
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char *hostname; /*!< hostname */
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uint16_t port; /*!< service port */
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// TXT
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mdns_txt_item_t *txt; /*!< txt record */
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uint8_t *txt_value_len; /*!< array of txt value len of each record */
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size_t txt_count; /*!< number of txt items */
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// A and AAAA
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mdns_ip_addr_t *addr; /*!< linked list of IP addresses found */
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} mdns_result_t;
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typedef void (*mdns_query_notify_t)(mdns_search_once_t *search);
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/**
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* @brief Initialize mDNS on given interface
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*
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* @return
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* - ESP_OK on success
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* - ESP_ERR_INVALID_STATE when failed to register event handler
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* - ESP_ERR_NO_MEM on memory error
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* - ESP_FAIL when failed to start mdns task
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*/
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esp_err_t mdns_init(void);
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/**
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* @brief Stop and free mDNS server
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*
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*/
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void mdns_free(void);
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/**
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* @brief Set the hostname for mDNS server
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* required if you want to advertise services
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*
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* @param hostname Hostname to set
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*
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* @return
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* - ESP_OK success
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* - ESP_ERR_INVALID_ARG Parameter error
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* - ESP_ERR_NO_MEM memory error
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*/
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esp_err_t mdns_hostname_set(const char *hostname);
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/**
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* @brief Adds a hostname and address to be delegated
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* A/AAAA queries will be replied for the hostname and
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* services can be added to this host.
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*
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* @param hostname Hostname to add
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* @param address_list The IP address list of the host
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*
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* @return
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* - ESP_OK success
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* - ESP_ERR_INVALID_STATE mDNS is not running
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* - ESP_ERR_INVALID_ARG Parameter error
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* - ESP_ERR_NO_MEM memory error
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*
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*/
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esp_err_t mdns_delegate_hostname_add(const char *hostname, const mdns_ip_addr_t *address_list);
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/**
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* @brief Remove a delegated hostname
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* All the services added to this host will also be removed.
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*
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* @param hostname Hostname to remove
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*
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* @return
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* - ESP_OK success
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* - ESP_ERR_INVALID_STATE mDNS is not running
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* - ESP_ERR_INVALID_ARG Parameter error
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* - ESP_ERR_NO_MEM memory error
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*
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*/
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esp_err_t mdns_delegate_hostname_remove(const char *hostname);
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/**
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* @brief Query whether a hostname has been added
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*
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* @param hostname Hostname to query
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*
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* @return
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* - true The hostname has been added.
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* - false The hostname has not been added.
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*
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*/
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bool mdns_hostname_exists(const char *hostname);
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/**
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* @brief Set the default instance name for mDNS server
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*
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* @param instance_name Instance name to set
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*
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* @return
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* - ESP_OK success
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* - ESP_ERR_INVALID_ARG Parameter error
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* - ESP_ERR_NO_MEM memory error
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*/
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esp_err_t mdns_instance_name_set(const char *instance_name);
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/**
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* @brief Add service to mDNS server
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*
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* @note The value length of txt items will be automatically decided by strlen
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*
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* @param instance_name instance name to set. If NULL,
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* global instance name or hostname will be used.
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* Note that MDNS_MULTIPLE_INSTANCE config option
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* needs to be enabled for adding multiple instances
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* with the same instance type.
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* @param service_type service type (_http, _ftp, etc)
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* @param proto service protocol (_tcp, _udp)
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* @param port service port
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* @param txt string array of TXT data (eg. {{"var","val"},{"other","2"}})
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* @param num_items number of items in TXT data
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*
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* @return
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* - ESP_OK success
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* - ESP_ERR_INVALID_ARG Parameter error
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* - ESP_ERR_NO_MEM memory error
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* - ESP_FAIL failed to add service
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*/
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esp_err_t mdns_service_add(const char *instance_name, const char *service_type, const char *proto, uint16_t port, mdns_txt_item_t txt[], size_t num_items);
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/**
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* @brief Add service to mDNS server with a delegated hostname
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*
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* @note The value length of txt items will be automatically decided by strlen
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*
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* @param instance_name instance name to set. If NULL,
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* global instance name or hostname will be used
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* Note that MDNS_MULTIPLE_INSTANCE config option
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* needs to be enabled for adding multiple instances
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* with the same instance type.
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* @param service_type service type (_http, _ftp, etc)
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* @param proto service protocol (_tcp, _udp)
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* @param hostname service hostname. If NULL, local hostname will be used.
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* @param port service port
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* @param txt string array of TXT data (eg. {{"var","val"},{"other","2"}})
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* @param num_items number of items in TXT data
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*
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* @return
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* - ESP_OK success
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* - ESP_ERR_INVALID_ARG Parameter error
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* - ESP_ERR_NO_MEM memory error
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* - ESP_FAIL failed to add service
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*/
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esp_err_t mdns_service_add_for_host(const char *instance_name, const char *service_type, const char *proto,
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const char *hostname, uint16_t port, mdns_txt_item_t txt[], size_t num_items);
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/**
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* @brief Check whether a service has been added.
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*
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* @param service_type service type (_http, _ftp, etc)
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* @param proto service protocol (_tcp, _udp)
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* @param hostname service hostname. If NULL, checks for the local hostname.
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*
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* @return
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* - true Correspondding service has been added.
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* - false Service not found.
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*/
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bool mdns_service_exists(const char *service_type, const char *proto, const char *hostname);
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/**
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* @brief Check whether a service has been added.
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*
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* @param instance instance name
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* @param service_type service type (_http, _ftp, etc)
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* @param proto service protocol (_tcp, _udp)
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* @param hostname service hostname. If NULL, checks for the local hostname.
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*
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* @return
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* - true Correspondding service has been added.
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* - false Service not found.
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*/
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bool mdns_service_exists_with_instance(const char *instance, const char *service_type, const char *proto,
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const char *hostname);
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/**
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* @brief Remove service from mDNS server
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*
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* @param service_type service type (_http, _ftp, etc)
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* @param proto service protocol (_tcp, _udp)
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*
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* @return
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* - ESP_OK success
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* - ESP_ERR_INVALID_ARG Parameter error
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* - ESP_ERR_NOT_FOUND Service not found
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* - ESP_ERR_NO_MEM memory error
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*/
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esp_err_t mdns_service_remove(const char *service_type, const char *proto);
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/**
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* @brief Remove service from mDNS server with hostname
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*
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* @param instance instance name
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* @param service_type service type (_http, _ftp, etc)
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* @param proto service protocol (_tcp, _udp)
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* @param hostname service hostname. If NULL, local hostname will be used.
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*
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* @return
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* - ESP_OK success
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* - ESP_ERR_INVALID_ARG Parameter error
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* - ESP_ERR_NOT_FOUND Service not found
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* - ESP_ERR_NO_MEM memory error
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*/
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esp_err_t mdns_service_remove_for_host(const char *instance, const char *service_type, const char *proto, const char *hostname);
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/**
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* @brief Set instance name for service
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*
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* @param service_type service type (_http, _ftp, etc)
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* @param proto service protocol (_tcp, _udp)
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* @param instance_name instance name to set
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*
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* @return
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* - ESP_OK success
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* - ESP_ERR_INVALID_ARG Parameter error
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* - ESP_ERR_NOT_FOUND Service not found
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* - ESP_ERR_NO_MEM memory error
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*/
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esp_err_t mdns_service_instance_name_set(const char *service_type, const char *proto, const char *instance_name);
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/**
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* @brief Set instance name for service with hostname
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*
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* @param instance_old original instance name
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* @param service_type service type (_http, _ftp, etc)
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* @param proto service protocol (_tcp, _udp)
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* @param hostname service hostname. If NULL, local hostname will be used.
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* @param instance_name instance name to set
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*
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* @return
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* - ESP_OK success
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* - ESP_ERR_INVALID_ARG Parameter error
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* - ESP_ERR_NOT_FOUND Service not found
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* - ESP_ERR_NO_MEM memory error
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*/
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esp_err_t mdns_service_instance_name_set_for_host(const char *instance_old, const char *service_type, const char *proto, const char *hostname,
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const char *instance_name);
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/**
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* @brief Set service port
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*
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* @param service_type service type (_http, _ftp, etc)
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* @param proto service protocol (_tcp, _udp)
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* @param port service port
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*
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* @return
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* - ESP_OK success
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* - ESP_ERR_INVALID_ARG Parameter error
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* - ESP_ERR_NOT_FOUND Service not found
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* - ESP_ERR_NO_MEM memory error
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*/
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esp_err_t mdns_service_port_set(const char *service_type, const char *proto, uint16_t port);
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/**
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* @brief Set service port with hostname
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*
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* @param instance instance name
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* @param service_type service type (_http, _ftp, etc)
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* @param proto service protocol (_tcp, _udp)
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* @param hostname service hostname. If NULL, local hostname will be used.
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* @param port service port
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*
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* @return
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* - ESP_OK success
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* - ESP_ERR_INVALID_ARG Parameter error
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* - ESP_ERR_NOT_FOUND Service not found
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* - ESP_ERR_NO_MEM memory error
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*/
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esp_err_t mdns_service_port_set_for_host(const char *instance, const char *service_type, const char *proto, const char *hostname,
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uint16_t port);
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/**
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* @brief Replace all TXT items for service
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*
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* @note The value length of txt items will be automatically decided by strlen
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*
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* @param service_type service type (_http, _ftp, etc)
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* @param proto service protocol (_tcp, _udp)
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* @param txt array of TXT data (eg. {{"var","val"},{"other","2"}})
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* @param num_items number of items in TXT data
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*
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* @return
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* - ESP_OK success
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* - ESP_ERR_INVALID_ARG Parameter error
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* - ESP_ERR_NOT_FOUND Service not found
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* - ESP_ERR_NO_MEM memory error
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*/
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esp_err_t mdns_service_txt_set(const char *service_type, const char *proto, mdns_txt_item_t txt[], uint8_t num_items);
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/**
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* @brief Replace all TXT items for service with hostname
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*
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* @note The value length of txt items will be automatically decided by strlen
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*
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* @param instance instance name
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* @param service_type service type (_http, _ftp, etc)
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* @param proto service protocol (_tcp, _udp)
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* @param hostname service hostname. If NULL, local hostname will be used.
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* @param txt array of TXT data (eg. {{"var","val"},{"other","2"}})
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* @param num_items number of items in TXT data
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*
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* @return
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* - ESP_OK success
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* - ESP_ERR_INVALID_ARG Parameter error
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* - ESP_ERR_NOT_FOUND Service not found
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* - ESP_ERR_NO_MEM memory error
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*/
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esp_err_t mdns_service_txt_set_for_host(const char *instance, const char *service_type, const char *proto, const char *hostname,
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mdns_txt_item_t txt[], uint8_t num_items);
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/**
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* @brief Set/Add TXT item for service TXT record
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*
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* @note The value length will be automatically decided by strlen
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*
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* @param service_type service type (_http, _ftp, etc)
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* @param proto service protocol (_tcp, _udp)
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* @param key the key that you want to add/update
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* @param value the new value of the key
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*
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* @return
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* - ESP_OK success
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* - ESP_ERR_INVALID_ARG Parameter error
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* - ESP_ERR_NOT_FOUND Service not found
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* - ESP_ERR_NO_MEM memory error
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*/
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esp_err_t mdns_service_txt_item_set(const char *service_type, const char *proto, const char *key, const char *value);
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/**
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* @brief Set/Add TXT item for service TXT record
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*
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* @param service_type service type (_http, _ftp, etc)
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* @param proto service protocol (_tcp, _udp)
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* @param key the key that you want to add/update
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* @param value the new value of the key
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* @param value_len the length of the value
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*
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* @return
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* - ESP_OK success
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* - ESP_ERR_INVALID_ARG Parameter error
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* - ESP_ERR_NOT_FOUND Service not found
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* - ESP_ERR_NO_MEM memory error
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*/
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esp_err_t mdns_service_txt_item_set_with_explicit_value_len(const char *service_type, const char *proto,
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const char *key, const char *value, uint8_t value_len);
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/**
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* @brief Set/Add TXT item for service TXT record with hostname
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*
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* @note The value length will be automatically decided by strlen
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*
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* @param instance instance name
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* @param service_type service type (_http, _ftp, etc)
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* @param proto service protocol (_tcp, _udp)
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* @param hostname service hostname. If NULL, local hostname will be used.
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* @param key the key that you want to add/update
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* @param value the new value of the key
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*
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* @return
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* - ESP_OK success
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* - ESP_ERR_INVALID_ARG Parameter error
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* - ESP_ERR_NOT_FOUND Service not found
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* - ESP_ERR_NO_MEM memory error
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*/
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esp_err_t mdns_service_txt_item_set_for_host(const char *instance, const char *service_type, const char *proto, const char *hostname,
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const char *key, const char *value);
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/**
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* @brief Set/Add TXT item for service TXT record with hostname and txt value length
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*
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* @param instance instance name
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* @param service_type service type (_http, _ftp, etc)
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* @param proto service protocol (_tcp, _udp)
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* @param hostname service hostname. If NULL, local hostname will be used.
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* @param key the key that you want to add/update
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* @param value the new value of the key
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* @param value_len the length of the value
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*
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* @return
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* - ESP_OK success
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* - ESP_ERR_INVALID_ARG Parameter error
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* - ESP_ERR_NOT_FOUND Service not found
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* - ESP_ERR_NO_MEM memory error
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*/
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esp_err_t mdns_service_txt_item_set_for_host_with_explicit_value_len(const char *instance, const char *service_type, const char *proto,
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const char *hostname, const char *key,
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const char *value, uint8_t value_len);
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/**
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* @brief Remove TXT item for service TXT record
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*
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* @param service_type service type (_http, _ftp, etc)
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* @param proto service protocol (_tcp, _udp)
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* @param key the key that you want to remove
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*
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* @return
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* - ESP_OK success
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* - ESP_ERR_INVALID_ARG Parameter error
|
|
* - ESP_ERR_NOT_FOUND Service not found
|
|
* - ESP_ERR_NO_MEM memory error
|
|
*/
|
|
esp_err_t mdns_service_txt_item_remove(const char *service_type, const char *proto, const char *key);
|
|
|
|
/**
|
|
* @brief Remove TXT item for service TXT record with hostname
|
|
*
|
|
* @param instance instance name
|
|
* @param service_type service type (_http, _ftp, etc)
|
|
* @param proto service protocol (_tcp, _udp)
|
|
* @param hostname service hostname. If NULL, local hostname will be used.
|
|
* @param key the key that you want to remove
|
|
*
|
|
* @return
|
|
* - ESP_OK success
|
|
* - ESP_ERR_INVALID_ARG Parameter error
|
|
* - ESP_ERR_NOT_FOUND Service not found
|
|
* - ESP_ERR_NO_MEM memory error
|
|
*/
|
|
esp_err_t mdns_service_txt_item_remove_for_host(const char *instance, const char *service_type, const char *proto, const char *hostname,
|
|
const char *key);
|
|
|
|
/**
|
|
* @brief Add subtype for service.
|
|
*
|
|
* @param instance_name instance name. If NULL, will find the first service with the same service type and protocol.
|
|
* @param service_type service type (_http, _ftp, etc)
|
|
* @param proto service protocol (_tcp, _udp)
|
|
* @param hostname service hostname. If NULL, local hostname will be used.
|
|
* @param subtype The subtype to add.
|
|
*
|
|
* @return
|
|
* - ESP_OK success
|
|
* - ESP_ERR_INVALID_ARG Parameter error
|
|
* - ESP_ERR_NOT_FOUND Service not found
|
|
* - ESP_ERR_NO_MEM memory error
|
|
*/
|
|
esp_err_t mdns_service_subtype_add_for_host(const char *instance_name, const char *service_type, const char *proto,
|
|
const char *hostname, const char *subtype);
|
|
|
|
/**
|
|
* @brief Remove and free all services from mDNS server
|
|
*
|
|
* @return
|
|
* - ESP_OK success
|
|
* - ESP_ERR_INVALID_ARG Parameter error
|
|
*/
|
|
esp_err_t mdns_service_remove_all(void);
|
|
|
|
/**
|
|
* @brief Deletes the finished query. Call this only after the search has ended!
|
|
*
|
|
* @param search pointer to search object
|
|
*
|
|
* @return
|
|
* - ESP_OK success
|
|
* - ESP_ERR_INVALID_STATE search has not finished
|
|
* - ESP_ERR_INVALID_ARG pointer to search object is NULL
|
|
*/
|
|
esp_err_t mdns_query_async_delete(mdns_search_once_t *search);
|
|
|
|
/**
|
|
* @brief Get results from search pointer. Results available as a pointer to the output parameter.
|
|
* Pointer to search object has to be deleted via `mdns_query_async_delete` once the query has finished.
|
|
* The results although have to be freed manually.
|
|
*
|
|
* @param search pointer to search object
|
|
* @param timeout time in milliseconds to wait for answers
|
|
* @param results pointer to the results of the query
|
|
* @param num_results pointer to the number of the actual result items (set to NULL to ignore this return value)
|
|
*
|
|
* @return
|
|
* True if search has finished before or at timeout
|
|
* False if search timeout is over
|
|
*/
|
|
bool mdns_query_async_get_results(mdns_search_once_t *search, uint32_t timeout, mdns_result_t **results, uint8_t *num_results);
|
|
|
|
/**
|
|
* @brief Query mDNS for host or service asynchronousely.
|
|
* Search has to be tested for progress and deleted manually!
|
|
*
|
|
* @param name service instance or host name (NULL for PTR queries)
|
|
* @param service_type service type (_http, _arduino, _ftp etc.) (NULL for host queries)
|
|
* @param proto service protocol (_tcp, _udp, etc.) (NULL for host queries)
|
|
* @param type type of query (MDNS_TYPE_*)
|
|
* @param timeout time in milliseconds during which mDNS query is active
|
|
* @param max_results maximum results to be collected
|
|
* @param notifier Notification function to be called when the result is ready, can be NULL
|
|
*
|
|
* @return mdns_search_once_s pointer to new search object if query initiated successfully.
|
|
* NULL otherwise.
|
|
*/
|
|
mdns_search_once_t *mdns_query_async_new(const char *name, const char *service_type, const char *proto, uint16_t type,
|
|
uint32_t timeout, size_t max_results, mdns_query_notify_t notifier);
|
|
|
|
/**
|
|
* @brief Generic mDNS query
|
|
* All following query methods are derived from this one
|
|
*
|
|
* @param name service instance or host name (NULL for PTR queries)
|
|
* @param service_type service type (_http, _arduino, _ftp etc.) (NULL for host queries)
|
|
* @param proto service protocol (_tcp, _udp, etc.) (NULL for host queries)
|
|
* @param type type of query (MDNS_TYPE_*)
|
|
* @param transmission_type either Unicast query, or Multicast query
|
|
* @param timeout time in milliseconds to wait for answers.
|
|
* @param max_results maximum results to be collected
|
|
* @param results pointer to the results of the query
|
|
* results must be freed using mdns_query_results_free below
|
|
*
|
|
* @return
|
|
* - ESP_OK success
|
|
* - ESP_ERR_INVALID_STATE mDNS is not running
|
|
* - ESP_ERR_NO_MEM memory error
|
|
* - ESP_ERR_INVALID_ARG timeout was not given
|
|
*/
|
|
esp_err_t mdns_query_generic(const char *name, const char *service_type, const char *proto, uint16_t type,
|
|
mdns_query_transmission_type_t transmission_type, uint32_t timeout, size_t max_results, mdns_result_t **results);
|
|
|
|
/**
|
|
* @brief Query mDNS for host or service
|
|
*
|
|
* Note that querying PTR types sends Multicast query, all other types send Unicast queries
|
|
*
|
|
* @param name service instance or host name (NULL for PTR queries)
|
|
* @param service_type service type (_http, _arduino, _ftp etc.) (NULL for host queries)
|
|
* @param proto service protocol (_tcp, _udp, etc.) (NULL for host queries)
|
|
* @param type type of query (MDNS_TYPE_*)
|
|
* @param timeout time in milliseconds to wait for answers.
|
|
* @param max_results maximum results to be collected
|
|
* @param results pointer to the results of the query
|
|
* results must be freed using mdns_query_results_free below
|
|
*
|
|
* @return
|
|
* - ESP_OK success
|
|
* - ESP_ERR_INVALID_STATE mDNS is not running
|
|
* - ESP_ERR_NO_MEM memory error
|
|
* - ESP_ERR_INVALID_ARG timeout was not given
|
|
*/
|
|
esp_err_t mdns_query(const char *name, const char *service_type, const char *proto, uint16_t type, uint32_t timeout, size_t max_results, mdns_result_t **results);
|
|
|
|
/**
|
|
* @brief Free query results
|
|
*
|
|
* @param results linked list of results to be freed
|
|
*/
|
|
void mdns_query_results_free(mdns_result_t *results);
|
|
|
|
/**
|
|
* @brief Query mDNS for service
|
|
*
|
|
* @param service_type service type (_http, _arduino, _ftp etc.)
|
|
* @param proto service protocol (_tcp, _udp, etc.)
|
|
* @param timeout time in milliseconds to wait for answer.
|
|
* @param max_results maximum results to be collected
|
|
* @param results pointer to the results of the query
|
|
*
|
|
* @return
|
|
* - ESP_OK success
|
|
* - ESP_ERR_INVALID_STATE mDNS is not running
|
|
* - ESP_ERR_NO_MEM memory error
|
|
* - ESP_ERR_INVALID_ARG parameter error
|
|
*/
|
|
esp_err_t mdns_query_ptr(const char *service_type, const char *proto, uint32_t timeout, size_t max_results, mdns_result_t **results);
|
|
|
|
/**
|
|
* @brief Query mDNS for SRV record
|
|
*
|
|
* @param instance_name service instance name
|
|
* @param service_type service type (_http, _arduino, _ftp etc.)
|
|
* @param proto service protocol (_tcp, _udp, etc.)
|
|
* @param timeout time in milliseconds to wait for answer.
|
|
* @param result pointer to the result of the query
|
|
*
|
|
* @return
|
|
* - ESP_OK success
|
|
* - ESP_ERR_INVALID_STATE mDNS is not running
|
|
* - ESP_ERR_NO_MEM memory error
|
|
* - ESP_ERR_INVALID_ARG parameter error
|
|
*/
|
|
esp_err_t mdns_query_srv(const char *instance_name, const char *service_type, const char *proto, uint32_t timeout, mdns_result_t **result);
|
|
|
|
/**
|
|
* @brief Query mDNS for TXT record
|
|
*
|
|
* @param instance_name service instance name
|
|
* @param service_type service type (_http, _arduino, _ftp etc.)
|
|
* @param proto service protocol (_tcp, _udp, etc.)
|
|
* @param timeout time in milliseconds to wait for answer.
|
|
* @param result pointer to the result of the query
|
|
*
|
|
* @return
|
|
* - ESP_OK success
|
|
* - ESP_ERR_INVALID_STATE mDNS is not running
|
|
* - ESP_ERR_NO_MEM memory error
|
|
* - ESP_ERR_INVALID_ARG parameter error
|
|
*/
|
|
esp_err_t mdns_query_txt(const char *instance_name, const char *service_type, const char *proto, uint32_t timeout, mdns_result_t **result);
|
|
|
|
/**
|
|
* @brief Query mDNS for A record
|
|
*
|
|
* @param host_name host name to look for
|
|
* @param timeout time in milliseconds to wait for answer.
|
|
* @param addr pointer to the resulting IP4 address
|
|
*
|
|
* @return
|
|
* - ESP_OK success
|
|
* - ESP_ERR_INVALID_STATE mDNS is not running
|
|
* - ESP_ERR_NO_MEM memory error
|
|
* - ESP_ERR_INVALID_ARG parameter error
|
|
*/
|
|
esp_err_t mdns_query_a(const char *host_name, uint32_t timeout, esp_ip4_addr_t *addr);
|
|
|
|
#if CONFIG_LWIP_IPV6
|
|
/**
|
|
* @brief Query mDNS for A record
|
|
*
|
|
* Please note that hostname must not contain domain name, as mDNS uses '.local' domain.
|
|
*
|
|
* @param host_name host name to look for
|
|
* @param timeout time in milliseconds to wait for answer. If 0, max_results needs to be defined
|
|
* @param addr pointer to the resulting IP6 address
|
|
*
|
|
* @return
|
|
* - ESP_OK success
|
|
* - ESP_ERR_INVALID_STATE mDNS is not running
|
|
* - ESP_ERR_NO_MEM memory error
|
|
* - ESP_ERR_INVALID_ARG parameter error
|
|
*/
|
|
esp_err_t mdns_query_aaaa(const char *host_name, uint32_t timeout, esp_ip6_addr_t *addr);
|
|
#endif
|
|
|
|
|
|
/**
|
|
* @brief Register custom esp_netif with mDNS functionality
|
|
* mDNS service runs by default on preconfigured interfaces (STA, AP, ETH).
|
|
* This API enables running the service on any customized interface,
|
|
* either using standard WiFi or Ethernet driver or any kind of user defined driver.
|
|
*
|
|
* @param esp_netif Pointer to esp-netif interface
|
|
* @return
|
|
* - ESP_OK success
|
|
* - ESP_ERR_INVALID_STATE mDNS is not running or this netif is already registered
|
|
* - ESP_ERR_NO_MEM not enough memory for this in interface in the netif list (see CONFIG_MDNS_MAX_INTERFACES)
|
|
*/
|
|
esp_err_t mdns_register_netif(esp_netif_t *esp_netif);
|
|
|
|
/**
|
|
* @brief Unregister esp-netif already registered in mDNS service
|
|
*
|
|
* @param esp_netif Pointer to esp-netif interface
|
|
* @return
|
|
* - ESP_OK success
|
|
* - ESP_ERR_INVALID_STATE mDNS is not running
|
|
* - ESP_ERR_NOT_FOUND this esp-netif was not registered in mDNS service
|
|
*/
|
|
esp_err_t mdns_unregister_netif(esp_netif_t *esp_netif);
|
|
|
|
/**
|
|
* @brief Set esp_netif to a desired state, or perform a desired action, such as enable/disable this interface
|
|
* or send announcement packets to this netif
|
|
*
|
|
* * This function is used to enable (probe, resolve conflicts and announce), announce, or disable (send bye) mDNS
|
|
* services on the specified network interface.
|
|
* * This function must be called if users registers a specific interface using mdns_register_netif()
|
|
* to enable mDNS services on that interface.
|
|
* * This function could be used in IP/connection event handlers to automatically enable/announce mDNS services
|
|
* when network properties change and/or disable them on disconnection.
|
|
*
|
|
* @param esp_netif Pointer to esp-netif interface
|
|
* @param event_action Disable/Enable/Announce on this interface over IPv4/IPv6 protocol.
|
|
* Actions enumerated in mdns_event_actions_t type.
|
|
* @return
|
|
* - ESP_OK success
|
|
* - ESP_ERR_INVALID_STATE mDNS is not running or this netif is not registered
|
|
* - ESP_ERR_NO_MEM memory error
|
|
*/
|
|
esp_err_t mdns_netif_action(esp_netif_t *esp_netif, mdns_event_actions_t event_action);
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif /* ESP_MDNS_H_ */
|