Chapter 2. API Reference
• proto: service protocol (_tcp, _udp)
• txt: array of TXT data (eg. {{“var”,”val”},{“other”,”2”}})
• num_items: number of items in TXT data
esp_err_t mdns_service_txt_set_for_host(const char *service_type, const char *proto,
const char *hostname, mdns_txt_item_t txt[],
uint8_t num_items)
Replace all TXT items for service with hostname.
Note The value length of txt items will be automatically decided by strlen
Return
• ESP_OK success
• ESP_ERR_INVALID_ARG Parameter error
• ESP_ERR_NOT_FOUND Service not found
• ESP_ERR_NO_MEM memory error
Parameters
• service_type: service type (_http, _ftp, etc)
• proto: service protocol (_tcp, _udp)
• hostname: service hostname. If NULL, local hostname will be used.
• txt: array of TXT data (eg. {{“var”,”val”},{“other”,”2”}})
• num_items: number of items in TXT data
esp_err_t mdns_service_txt_item_set(const char *service_type, const char *proto, const
char *key, const char *value)
Set/Add TXT item for service TXT record.
Note The value length will be automatically decided by strlen
Return
• ESP_OK success
• ESP_ERR_INVALID_ARG Parameter error
• ESP_ERR_NOT_FOUND Service not found
• ESP_ERR_NO_MEM memory error
Parameters
• service_type: service type (_http, _ftp, etc)
• proto: service protocol (_tcp, _udp)
• key: the key that you want to add/update
• value: the new value of the key
esp_err_t mdns_service_txt_item_set_with_explicit_value_len(const char
*service_type, const
char *proto, const
char *key, const
char *value, uint8_t
value_len)
Set/Add TXT item for service TXT record.
Return
• ESP_OK success
• ESP_ERR_INVALID_ARG Parameter error
• ESP_ERR_NOT_FOUND Service not found
• ESP_ERR_NO_MEM memory error
Parameters
• service_type: service type (_http, _ftp, etc)
• proto: service protocol (_tcp, _udp)
• key: the key that you want to add/update
• value: the new value of the key
• value_len: the length of the value
esp_err_t mdns_service_txt_item_set_for_host(const char *service_type, const char
*proto, const char *hostname, const char
*key, const char *value)
Set/Add TXT item for service TXT record with hostname.
Espressif Systems 615
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