Espressif ESP32-S2 Programming Manual page 577

Chapter 2. API Reference
esp_err_t esp_http_client_flush_response(esp_http_client_handle_t
Process all remaining response data This uses an internal buffer to repeatedly receive, parse, and discard re-
sponse data until complete data is processed. As no additional user-supplied buffer is required, this may be
preferrable to esp_http_client_read_response in situations where the content of the response may
be ignored.
Return
• ESP_OK If successful, len will have discarded length
• ESP_FAIL If failed to read response
• ESP_ERR_INVALID_ARG If the client is NULL
Parameters
• [in] client: The esp_http_client handle
• len: Length of data discarded
esp_err_t esp_http_client_get_url(esp_http_client_handle_t
Get URL from client.
Return
• ESP_OK
• ESP_FAIL
Parameters
• [in] client: The esp_http_client handle
• [inout] url: The buffer to store URL
• [in] len: The buffer length
esp_err_t esp_http_client_get_chunk_length(esp_http_client_handle_t
Get Chunk-Length from client.
Return
• ESP_OK If successful, len will have length of current chunk
• ESP_FAIL If the server is not a chunked server
• ESP_ERR_INVALID_ARG If the client or len are NULL
Parameters
• [in] client: The esp_http_client handle
• [out] len: Variable to store length
Structures
struct esp_http_client_event
HTTP Client events data.
Public Members
esp_http_client_event_id_t
event_id, to know the cause of the event
esp_http_client_handle_t
esp_http_client_handle_t context
void *data
data of the event
int data_len
data length of data
void *user_data
user_data context, from
char *header_key
For HTTP_EVENT_ON_HEADER event_id, it's store current http header key
char *header_value
For HTTP_EVENT_ON_HEADER event_id, it's store current http header value
Espressif Systems
event_id
client
esp_http_client_config_t
566
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client, int *len)
client, char *url, const int len)
client, int *len)
user_data
Release v4.4