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feat(esp_https_ota): Support partial downloading of OTA over single connection

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This commit added support to download OTA with partial download feature
over single HTTP connection if server supports persistent connection.
This commit is contained in:
nilesh.kale
2025-09-15 17:21:56 +05:30
parent e7f11e65a7
commit 0c5a6473f8
3 changed files with 79 additions and 5 deletions
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22
components/esp_https_ota/src/esp_https_ota.c
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@@ -145,7 +145,22 @@ static esp_err_t _http_connect(esp_https_ota_t *https_ota_handle)
* is enabled
*/
int post_len = esp_http_client_get_post_field(https_ota_handle->http_client, &post_data);
err = esp_http_client_open(https_ota_handle->http_client, post_len);
#if CONFIG_ESP_HTTPS_OTA_ENABLE_PARTIAL_DOWNLOAD
// If support_persistent_connection is enabled and this is a subsequent request, skip connection
if (esp_http_client_is_persistent_connection(https_ota_handle->http_client) && https_ota_handle->state == ESP_HTTPS_OTA_IN_PROGRESS) {
ESP_LOGD(TAG, "Using existing connection for partial download");
err = esp_http_client_prepare(https_ota_handle->http_client);
if (err != ESP_OK) {
ESP_LOGE(TAG, "Failed to reset HTTP client response state: %s", esp_err_to_name(err));
return err;
}
err = esp_http_client_request_send(https_ota_handle->http_client, post_len);
} else
#endif
{
err = esp_http_client_open(https_ota_handle->http_client, post_len);
}
if (err != ESP_OK) {
ESP_LOGE(TAG, "Failed to open HTTP connection: %s", esp_err_to_name(err));
return err;
@@ -604,7 +619,10 @@ esp_err_t esp_https_ota_perform(esp_https_ota_handle_t https_ota_handle)
}
if (handle->partial_http_download) {
if (handle->state == ESP_HTTPS_OTA_IN_PROGRESS && handle->image_length > handle->binary_file_len) {
esp_http_client_close(handle->http_client);
// Only close connection if support_persistent_connection is not enabled
if (!esp_http_client_is_persistent_connection(handle->http_client)) {
esp_http_client_close(handle->http_client);
}
char *header_val = NULL;
int header_size = 0;
#if CONFIG_ESP_HTTPS_OTA_DECRYPT_CB