comments

Author: brentru

src/wifi/AdafruitIO_ESP8266.cpp

@@ -21,6 +21,11 @@ AdafruitIO_ESP8266::AdafruitIO_ESP8266(const char *user, const char *key,
     : AdafruitIO(user, key) {
   _ssid = ssid;
   _pass = pass;
+  // Uncomment the following lines and remove the existing WiFiClient and MQTT
+  // client constructors to use Secure MQTT with ESP8266.
+  // _client = new WiFiClientSecure;
+  // _client->setFingerprint(AIO_SSL_FINGERPRINT);
+  // _mqtt = new Adafruit_MQTT_Client(_client, _host, _mqtt_port);
   _client = new WiFiClient;
   _mqtt = new Adafruit_MQTT_Client(_client, _host, 1883);
   _http = new HttpClient(*_client, _host, _http_port);

src/wifi/AdafruitIO_ESP8266.h

@@ -22,6 +22,17 @@
 #include "Adafruit_MQTT_Client.h"
 #include "Arduino.h"
 #include "ESP8266WiFi.h"
+/* NOTE - Projects that require "Secure MQTT" (TLS/SSL) also require a new
+ * SSL certificate every year. If adding Secure MQTT to your ESP8266 project is
+ * important  - please switch to using the modern ESP32 (and related models)
+ * instead of the ESP8266 to avoid updating the SSL fingerprint every year.
+ *
+ * If you've read through this and still want to use "Secure MQTT" with your
+ * ESP8266 project, we've left the "WiFiClientSecure" lines commented out. To
+ * use them, uncomment the commented out lines within `AdafruitIO_ESP8266.h` and
+ * `AdafruitIO_ESP8266.cpp` and recompile the library.
+ */
+// #include "WiFiClientSecure.h"
 
 class AdafruitIO_ESP8266 : public AdafruitIO {
 
@@ -40,6 +51,9 @@ class AdafruitIO_ESP8266 : public AdafruitIO {
   const char *_ssid;
   const char *_pass;
   WiFiClient *_client;
+  // Uncomment the following line, and remove the line above, to use
+  // secure MQTT with ESP8266.
+  // WiFiClientSecure *_client;
 };
 
 #endif // ESP8266