feat(mqtt): update mqtt component to esp-mqtt commit id 752953dc and update some example

examples/protocols/esp-mqtt/ssl/CMakeLists.txt

@@ -6,4 +6,4 @@ include($ENV{IDF_PATH}/tools/cmake/project.cmake)
 
 project(mqtt_ssl)
 
-target_add_binary_data(mqtt_ssl.elf "main/iot_eclipse_org.pem" TEXT)
+target_add_binary_data(mqtt_ssl.elf "main/mqtt_eclipse_org.pem" TEXT)

examples/protocols/esp-mqtt/ssl/README.md

@@ -2,7 +2,7 @@
 
 (See the README.md file in the upper level 'examples' directory for more information about examples.)
 
-This example connects to the broker iot.eclipse.org using ssl transport and as a demonstration subscribes/unsubscribes and send a message on certain topic.
+This example connects to the broker mqtt.eclipse.org using ssl transport and as a demonstration subscribes/unsubscribes and send a message on certain topic.
 
 It uses ESP-MQTT library which implements mqtt client to connect to mqtt broker.
 
@@ -22,9 +22,9 @@ make menuconfig
 
 * Set ssid and password for the board to connect to AP.
 
-Note how to create a PEM certificate for iot.eclipse.org:
+Note how to create a PEM certificate for mqtt.eclipse.org:
 ```
-openssl s_client -showcerts -connect iot.eclipse.org:8883 </dev/null 2>/dev/null|openssl x509 -outform PEM >iot_eclipse_org.pem
+openssl s_client -showcerts -connect mqtt.eclipse.org:8883 </dev/null 2>/dev/null|openssl x509 -outform PEM >iot_eclipse_org.pem
 ```
 
 ### Build and Flash

examples/protocols/esp-mqtt/ssl/main/Kconfig.projbuild

@@ -1,31 +1,32 @@
 menu "Example Configuration"
 
-config WIFI_SSID
-    string "WiFi SSID"
-    default "myssid"
-    help
-        SSID (network name) for the example to connect to.
+    config WIFI_SSID
+        string "WiFi SSID"
+        default "myssid"
+        help
+            SSID (network name) for the example to connect to.
 
-config WIFI_PASSWORD
-    string "WiFi Password"
-    default "mypassword"
-    help
-        WiFi password (WPA or WPA2) for the example to use.
+    config WIFI_PASSWORD
+        string "WiFi Password"
+        default "mypassword"
+        help
+            WiFi password (WPA or WPA2) for the example to use.
 
-config BROKER_URI
-    string "Broker URL"
-    default "mqtts://iot.eclipse.org:8883"
-    help
-        URL of an mqtt broker which this example connects to.
+    config BROKER_URI
+        string "Broker URL"
+        default "mqtts://mqtt.eclipse.org:8883"
+        help
+            URL of an mqtt broker which this example connects to.
 
-config BROKER_CERTIFICATE_OVERRIDE
-    string "Broker certificate override"
-    default ""
-    help
-        Please leave empty if broker certificate included from a textfile; otherwise fill in a base64 part of PEM format certificate
+    config BROKER_CERTIFICATE_OVERRIDE
+        string "Broker certificate override"
+        default ""
+        help
+            Please leave empty if broker certificate included from a textfile; otherwise fill in a base64 part of PEM
+            format certificate
 
-config BROKER_CERTIFICATE_OVERRIDDEN
-    bool
-    default y if BROKER_CERTIFICATE_OVERRIDE != ""
+    config BROKER_CERTIFICATE_OVERRIDDEN
+        bool
+        default y if BROKER_CERTIFICATE_OVERRIDE != ""
 
 endmenu

examples/protocols/esp-mqtt/ssl/main/app_main.c

@@ -78,11 +78,11 @@ static void wifi_init(void)
 }
 
 #if CONFIG_BROKER_CERTIFICATE_OVERRIDDEN == 1
-static const uint8_t iot_eclipse_org_pem_start[]  = "-----BEGIN CERTIFICATE-----\n" CONFIG_BROKER_CERTIFICATE_OVERRIDE "\n-----END CERTIFICATE-----";
+static const uint8_t mqtt_eclipse_org_pem_start[]  = "-----BEGIN CERTIFICATE-----\n" CONFIG_BROKER_CERTIFICATE_OVERRIDE "\n-----END CERTIFICATE-----";
 #else
-extern const uint8_t iot_eclipse_org_pem_start[]   asm("_binary_iot_eclipse_org_pem_start");
+extern const uint8_t mqtt_eclipse_org_pem_start[]   asm("_binary_mqtt_eclipse_org_pem_start");
 #endif
-extern const uint8_t iot_eclipse_org_pem_end[]   asm("_binary_iot_eclipse_org_pem_end");
+extern const uint8_t mqtt_eclipse_org_pem_end[]   asm("_binary_mqtt_eclipse_org_pem_end");
 
 static esp_err_t mqtt_event_handler(esp_mqtt_event_handle_t event)
 {
@@ -123,6 +123,12 @@ static esp_err_t mqtt_event_handler(esp_mqtt_event_handle_t event)
             break;
         case MQTT_EVENT_ERROR:
             ESP_LOGI(TAG, "MQTT_EVENT_ERROR");
+            if (event->error_handle->error_type == MQTT_ERROR_TYPE_CONNECTION_REFUSED) {
+                ESP_LOGI(TAG, "Connection refused error: 0x%x", event->error_handle->connect_return_code);
+            }
+            break;
+        default:
+            ESP_LOGI(TAG, "Other event id:%d", event->event_id);
             break;
     }
     return ESP_OK;
@@ -134,7 +140,7 @@ static void mqtt_app_start(void)
     const esp_mqtt_client_config_t mqtt_cfg = {
         .uri = CONFIG_BROKER_URI,
         .event_handle = mqtt_event_handler,
-        .cert_pem = (const char *)iot_eclipse_org_pem_start,
+        .cert_pem = (const char *)mqtt_eclipse_org_pem_start,
     };
 
     ESP_LOGI(TAG, "[APP] Free memory: %d bytes", esp_get_free_heap_size());

examples/protocols/esp-mqtt/ssl/main/component.mk

@@ -1 +1 @@
-COMPONENT_EMBED_TXTFILES := iot_eclipse_org.pem
+COMPONENT_EMBED_TXTFILES := mqtt_eclipse_org.pem

examples/protocols/esp-mqtt/ssl/mqtt_ssl_example_test.py

@@ -86,8 +86,8 @@ def test_examples_protocol_mqtt_ssl(env, extra_data):
         client.on_connect = on_connect
         client.on_message = on_message
         client.tls_set(None,
-                    None,
-                    None, cert_reqs=ssl.CERT_NONE, tls_version=ssl.PROTOCOL_TLSv1, ciphers=None)
+                       None,
+                       None, cert_reqs=ssl.CERT_NONE, tls_version=ssl.PROTOCOL_TLSv1_2, ciphers=None)
         client.tls_insecure_set(True)
         print("Connecting...")
         client.connect(broker_url, broker_port, 60)
@@ -117,5 +117,6 @@ def test_examples_protocol_mqtt_ssl(env, extra_data):
         event_stop_client.set()
         thread1.join()
 
+
 if __name__ == '__main__':
     test_examples_protocol_mqtt_ssl()