MQTT: update default broker URL for examples

The MQTT broker URL used as default in the examples has ceased operation. All examples and documention have been updated to point to the new domain mqtt.eclipse.org.
This also required an update of the python example test scripts to use TLS 1.2

docs/en/api-reference/protocols/mqtt.rst

@@ -32,30 +32,30 @@ URI
 -  Curently support ``mqtt``, ``mqtts``, ``ws``, ``wss`` schemes
 -  MQTT over TCP samples:
 
-   -  ``mqtt://iot.eclipse.org``: MQTT over TCP, default port 1883:
-   -  ``mqtt://iot.eclipse.org:1884`` MQTT over TCP, port 1884:
-   -  ``mqtt://username:password@iot.eclipse.org:1884`` MQTT over TCP,
+   -  ``mqtt://mqtt.eclipse.org``: MQTT over TCP, default port 1883:
+   -  ``mqtt://mqtt.eclipse.org:1884`` MQTT over TCP, port 1884:
+   -  ``mqtt://username:password@mqtt.eclipse.org:1884`` MQTT over TCP,
       port 1884, with username and password
 
 -  MQTT over SSL samples:
 
-   -  ``mqtts://iot.eclipse.org``: MQTT over SSL, port 8883
-   -  ``mqtts://iot.eclipse.org:8884``: MQTT over SSL, port 8884
+   -  ``mqtts://mqtt.eclipse.org``: MQTT over SSL, port 8883
+   -  ``mqtts://mqtt.eclipse.org:8884``: MQTT over SSL, port 8884
 
 -  MQTT over Websocket samples:
 
-   -  ``ws://iot.eclipse.org:80/ws``
+   -  ``ws://mqtt.eclipse.org:80/mqtt``
 
 -  MQTT over Websocket Secure samples:
 
-   -  ``wss://iot.eclipse.org:443/ws``
+   -  ``wss://mqtt.eclipse.org:443/mqtt``
 
 -  Minimal configurations:
 
 .. code:: c
 
     const esp_mqtt_client_config_t mqtt_cfg = {
-        .uri = "mqtt://iot.eclipse.org",
+        .uri = "mqtt://mqtt.eclipse.org",
         .event_handle = mqtt_event_handler,
         // .user_context = (void *)your_context
     };
@@ -67,26 +67,26 @@ URI
 .. code:: c
 
     const esp_mqtt_client_config_t mqtt_cfg = {
-        .uri = "mqtt://iot.eclipse.org:1234",
+        .uri = "mqtt://mqtt.eclipse.org:1234",
         .event_handle = mqtt_event_handler,
         .port = 4567,
     };
-    //MQTT client will connect to iot.eclipse.org using port 4567
+    //MQTT client will connect to mqtt.eclipse.org using port 4567
 
 SSL
 ^^^
 
--  Get certificate from server, example: ``iot.eclipse.org``
-   ``openssl s_client -showcerts -connect iot.eclipse.org:8883 </dev/null 2>/dev/null|openssl x509 -outform PEM >iot_eclipse_org.pem``
+-  Get certificate from server, example: ``mqtt.eclipse.org``
+   ``openssl s_client -showcerts -connect mqtt.eclipse.org:8883 </dev/null 2>/dev/null|openssl x509 -outform PEM >mqtt_eclipse_org.pem``
 -  Check the sample application: ``examples/mqtt_ssl``
 -  Configuration:
 
 .. code:: cpp
 
     const esp_mqtt_client_config_t mqtt_cfg = {
-        .uri = "mqtts://iot.eclipse.org:8883",
+        .uri = "mqtts://mqtt.eclipse.org:8883",
         .event_handle = mqtt_event_handler,
-        .cert_pem = (const char *)iot_eclipse_org_pem_start,
+        .cert_pem = (const char *)mqtt_eclipse_org_pem_start,
     };
 
 For more options on ``esp_mqtt_client_config_t``, please refer to API reference below

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

@@ -14,7 +14,7 @@ menu "Example Configuration"
 
     config BROKER_URI
         string "Broker URL"
-        default "mqtts://iot.eclipse.org:8883"
+        default "mqtts://mqtt.eclipse.org:8883"
         help
             URL of an mqtt broker which this example connects to.
 

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

@@ -70,11 +70,11 @@ 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)
 {
@@ -132,7 +132,7 @@ 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/mqtt/ssl/main/component.mk

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

examples/protocols/mqtt/ssl/mqtt_ssl_example_test.py

@@ -87,7 +87,7 @@ def test_examples_protocol_mqtt_ssl(env, extra_data):
         client.on_message = on_message
         client.tls_set(None,
                        None,
-                       None, cert_reqs=ssl.CERT_NONE, tls_version=ssl.PROTOCOL_TLSv1, ciphers=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)

examples/protocols/mqtt/tcp/main/Kconfig.projbuild

@@ -14,7 +14,7 @@ menu "Example Configuration"
 
     config BROKER_URL
         string "Broker URL"
-        default "mqtt://iot.eclipse.org"
+        default "mqtt://mqtt.eclipse.org"
         help
             URL of the broker to connect to
 

examples/protocols/mqtt/ws/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 over web sockets as a demonstration subscribes/unsubscribes and send a message on certain topic.
+This example connects to the broker mqtt.eclipse.org over web sockets 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.
 

examples/protocols/mqtt/ws/main/Kconfig.projbuild

@@ -14,7 +14,7 @@ menu "Example Configuration"
 
     config BROKER_URI
         string "Broker URL"
-        default "ws://iot.eclipse.org:80/ws"
+        default "ws://mqtt.eclipse.org:80/mqtt"
         help
             URL of an mqtt broker which this example connects to.
 

examples/protocols/mqtt/ws/mqtt_ws_example_test.py

@@ -82,7 +82,6 @@ def test_examples_protocol_mqtt_ws(env, extra_data):
         client = mqtt.Client(transport="websockets")
         client.on_connect = on_connect
         client.on_message = on_message
-        client.ws_set_options(path="/ws", headers=None)
         print("Connecting...")
         client.connect(broker_url, broker_port, 60)
     except Exception:

examples/protocols/mqtt/wss/CMakeLists.txt

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

examples/protocols/mqtt/wss/README.md

@@ -1,7 +1,7 @@
 # ESP-MQTT MQTT over WSS Sample application
 (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 over secure websockets and as a demonstration subscribes/unsubscribes and send a message on certain topic.
+This example connects to the broker mqtt.eclipse.org over secure websockets 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.
 
@@ -21,10 +21,10 @@ 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/mqtt/wss/main/Kconfig.projbuild

@@ -14,7 +14,7 @@ menu "Example Configuration"
 
     config BROKER_URI
         string "Broker URL"
-        default "wss://iot.eclipse.org:443/ws"
+        default "wss://mqtt.eclipse.org:443/mqtt"
         help
             URL of an mqtt broker which this example connects to.
 

examples/protocols/mqtt/wss/main/app_main.c

@@ -70,11 +70,11 @@ 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)
 {
@@ -128,7 +128,7 @@ 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/mqtt/wss/main/component.mk

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

examples/protocols/mqtt/wss/mqtt_wss_example_test.py

@@ -85,7 +85,7 @@ def test_examples_protocol_mqtt_wss(env, extra_data):
         client.on_message = on_message
         client.tls_set(None,
                        None,
-                       None, cert_reqs=ssl.CERT_NONE, tls_version=ssl.PROTOCOL_TLSv1, ciphers=None)
+                       None, cert_reqs=ssl.CERT_NONE, tls_version=ssl.PROTOCOL_TLSv1_2, ciphers=None)
         print("Connecting...")
         client.connect(broker_url, broker_port, 60)
     except Exception:

examples/protocols/pppos_client/main/pppos_client_main.c

@@ -16,7 +16,7 @@
 #include "sim800.h"
 #include "bg96.h"
 
-#define BROKER_URL "mqtt://iot.eclipse.org"
+#define BROKER_URL "mqtt://mqtt.eclipse.org"
 
 static const char *TAG = "pppos_example";
 static EventGroupHandle_t event_group = NULL;