protocols: Updated examples to use correct API

- `http_request` and `https_x509_bundle`

examples/protocols/https_request/main/https_request_example_main.c

@@ -1,11 +1,12 @@
-/* HTTPS GET Example using plain mbedTLS sockets
+/*
+ * HTTPS GET Example using plain Mbed TLS sockets
  *
  * Contacts the howsmyssl.com API via TLS v1.2 and reads a JSON
  * response.
  *
- * Adapted from the ssl_client1 example in mbedtls.
+ * Adapted from the ssl_client1 example in Mbed TLS.
  *
- * SPDX-FileCopyrightText: 2006-2016 ARM Limited, All Rights Reserved
+ * SPDX-FileCopyrightText: The Mbed TLS Contributors
  *
  * SPDX-License-Identifier: Apache-2.0
  *
@@ -91,13 +92,17 @@ static void https_get_request(esp_tls_cfg_t cfg, const char *WEB_SERVER_URL, con
     char buf[512];
     int ret, len;
 
-    struct esp_tls *tls = esp_tls_conn_http_new(WEB_SERVER_URL, &cfg);
+    esp_tls_t *tls = esp_tls_init();
+    if (!tls) {
+        ESP_LOGE(TAG, "Failed to allocate esp_tls handle!");
+        goto exit;
+    }
 
-    if (tls != NULL) {
+    if (esp_tls_conn_http_new_sync(WEB_SERVER_URL, &cfg, tls) == 1) {
         ESP_LOGI(TAG, "Connection established...");
     } else {
         ESP_LOGE(TAG, "Connection failed...");
-        goto exit;
+        goto cleanup;
     }
 
 #ifdef CONFIG_EXAMPLE_CLIENT_SESSION_TICKETS
@@ -107,6 +112,7 @@ static void https_get_request(esp_tls_cfg_t cfg, const char *WEB_SERVER_URL, con
         tls_client_session = esp_tls_get_client_session(tls);
     }
 #endif
+
     size_t written_bytes = 0;
     do {
         ret = esp_tls_conn_write(tls,
@@ -117,27 +123,22 @@ static void https_get_request(esp_tls_cfg_t cfg, const char *WEB_SERVER_URL, con
             written_bytes += ret;
         } else if (ret != ESP_TLS_ERR_SSL_WANT_READ  && ret != ESP_TLS_ERR_SSL_WANT_WRITE) {
             ESP_LOGE(TAG, "esp_tls_conn_write  returned: [0x%02X](%s)", ret, esp_err_to_name(ret));
-            goto exit;
+            goto cleanup;
         }
     } while (written_bytes < strlen(REQUEST));
 
     ESP_LOGI(TAG, "Reading HTTP response...");
-
     do {
         len = sizeof(buf) - 1;
-        bzero(buf, sizeof(buf));
+        memset(buf, 0x00, sizeof(buf));
         ret = esp_tls_conn_read(tls, (char *)buf, len);
 
         if (ret == ESP_TLS_ERR_SSL_WANT_WRITE  || ret == ESP_TLS_ERR_SSL_WANT_READ) {
             continue;
-        }
-
-        if (ret < 0) {
+        } else if (ret < 0) {
             ESP_LOGE(TAG, "esp_tls_conn_read  returned [-0x%02X](%s)", -ret, esp_err_to_name(ret));
             break;
-        }
-
-        if (ret == 0) {
+        } else if (ret == 0) {
             ESP_LOGI(TAG, "connection closed");
             break;
         }
@@ -151,8 +152,9 @@ static void https_get_request(esp_tls_cfg_t cfg, const char *WEB_SERVER_URL, con
         putchar('\n'); // JSON output doesn't have a newline at end
     } while (1);
 
-exit:
+cleanup:
     esp_tls_conn_destroy(tls);
+exit:
     for (int countdown = 10; countdown >= 0; countdown--) {
         ESP_LOGI(TAG, "%d...", countdown);
         vTaskDelay(1000 / portTICK_PERIOD_MS);
@@ -251,7 +253,7 @@ static void https_request_task(void *pvparameters)
 #if CONFIG_MBEDTLS_CERTIFICATE_BUNDLE
     https_get_request_using_crt_bundle();
 #endif
-    printf("Minimum free heap size: %d bytes\n", esp_get_minimum_free_heap_size());
+    ESP_LOGI(TAG, "Minimum free heap size: %d bytes", esp_get_minimum_free_heap_size());
     https_get_request_using_cacert_buf();
     https_get_request_using_global_ca_store();
     ESP_LOGI(TAG, "Finish https_request example");
@@ -260,7 +262,7 @@ static void https_request_task(void *pvparameters)
 
 void app_main(void)
 {
-    ESP_ERROR_CHECK( nvs_flash_init() );
+    ESP_ERROR_CHECK(nvs_flash_init());
     ESP_ERROR_CHECK(esp_netif_init());
     ESP_ERROR_CHECK(esp_event_loop_create_default());
 

examples/protocols/https_x509_bundle/main/https_x509_bundle_example_main.c

@@ -56,16 +56,20 @@ 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,
             };
 
-            struct esp_tls *tls = esp_tls_conn_http_new(web_urls[i], &cfg);
+            esp_tls_t *tls = esp_tls_init();
+            if (!tls) {
+                ESP_LOGE(TAG, "Failed to allocate esp_tls handle!");
+                goto end;
+            }
 
-            if (tls != NULL) {
+            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 {
@@ -73,6 +77,7 @@ static void https_get_task(void *pvParameters)
             }
 
             esp_tls_conn_destroy(tls);
+end:
             vTaskDelay(1000 / portTICK_PERIOD_MS);
         }
 
@@ -83,8 +88,8 @@ static void https_get_task(void *pvParameters)
 
 void app_main(void)
 {
-    ESP_ERROR_CHECK( nvs_flash_init() );
-    esp_netif_init();
+    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.