chore: import upstream snapshot with attribution

examples/protocols/https_x509_bundle/main/CMakeLists.txt

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+idf_component_register(SRCS "https_x509_bundle_example_main.c"
+                    PRIV_REQUIRES esp-tls esp_wifi nvs_flash
+                    INCLUDE_DIRS ".")

examples/protocols/https_x509_bundle/main/https_x509_bundle_example_main.c

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+/* HTTPS GET Example using plain mbedTLS sockets
+ *
+ * Connects to multiple HTTPS servers and validates their certificates
+ * using the certificate bundle.
+ *
+ * Adapted from the ssl_client1 example in mbedtls.
+ *
+ * Original Copyright (C) 2006-2016, ARM Limited, All Rights Reserved, Apache 2.0 License.
+ * Additions Copyright (C) Copyright 2015-2016 Espressif Systems (Shanghai) PTE LTD, Apache 2.0 License.
+ *
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#include <string.h>
+#include <stdlib.h>
+#include "freertos/FreeRTOS.h"
+#include "freertos/task.h"
+#include "freertos/event_groups.h"
+#include "esp_wifi.h"
+#include "esp_event.h"
+#include "esp_log.h"
+#include "esp_system.h"
+#include "nvs_flash.h"
+#include "protocol_examples_common.h"
+#include "esp_netif.h"
+
+#include "lwip/err.h"
+#include "lwip/sockets.h"
+#include "lwip/sys.h"
+#include "lwip/netdb.h"
+#include "lwip/dns.h"
+
+#include "esp_tls.h"
+#include "esp_crt_bundle.h"
+
+#if CONFIG_MBEDTLS_CERTIFICATE_BUNDLE_DEFAULT_FULL
+#define MAX_URLS    8
+#else
+#define MAX_URLS    2
+#endif
+
+static const char *web_urls[MAX_URLS] = {
+    "https://letsencrypt.org",
+    "https://espressif.com",
+#if CONFIG_MBEDTLS_CERTIFICATE_BUNDLE_DEFAULT_FULL
+    "https://www.identrust.com",
+    "https://www.globalsign.com",
+    "https://www.sectigo.com",
+    "https://www.digicert.com",
+    "https://www.godaddy.com",
+    "https://rainmaker.espressif.com",  // Amazon
+#endif
+};
+
+static const char *TAG = "example";
+
+static void https_get_task(void *pvParameters)
+{
+    while (1) {
+        int conn_count = 0;
+        ESP_LOGI(TAG, "Connecting to %d URLs", MAX_URLS);
+
+        for (int i = 0; i < MAX_URLS; i++) {
+            esp_tls_cfg_t cfg = {
+                .crt_bundle_attach = esp_crt_bundle_attach,
+            };
+
+            esp_tls_t *tls = esp_tls_init();
+            if (!tls) {
+                ESP_LOGE(TAG, "Failed to allocate esp_tls handle!");
+                goto end;
+            }
+
+            if (esp_tls_conn_http_new_sync(web_urls[i], &cfg, tls) == 1) {
+                ESP_LOGI(TAG, "Connection established to %s", web_urls[i]);
+                conn_count++;
+            } else {
+                ESP_LOGE(TAG, "Could not connect to %s", web_urls[i]);
+            }
+
+            esp_tls_conn_destroy(tls);
+end:
+            vTaskDelay(1000 / portTICK_PERIOD_MS);
+        }
+
+        ESP_LOGI(TAG, "Completed %d connections", conn_count);
+        ESP_LOGI(TAG, "Starting over again...");
+    }
+}
+
+void app_main(void)
+{
+    ESP_ERROR_CHECK(nvs_flash_init());
+    ESP_ERROR_CHECK(esp_netif_init());
+    ESP_ERROR_CHECK(esp_event_loop_create_default());
+
+    /* This helper function configures Wi-Fi or Ethernet, as selected in menuconfig.
+     * Read "Establishing Wi-Fi or Ethernet Connection" section in
+     * examples/protocols/README.md for more information about this function.
+     */
+    ESP_ERROR_CHECK(example_connect());
+
+    xTaskCreate(&https_get_task, "https_get_task", 8192, NULL, 5, NULL);
+}

examples/protocols/https_x509_bundle/main/idf_component.yml

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+dependencies:
+  protocol_examples_common:
+    path: ${IDF_PATH}/examples/common_components/protocol_examples_common