first commit

libraries/ESP8266MQTTClient/examples/MQTTSecureClient/MQTTSecureClient.ino

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+#include <ESP8266MQTTClient.h>
+#include <ESP8266WiFi.h>
+MQTTClient mqtt;
+String fingerprint = "7E 36 22 01 F9 7E 99 2F C5 DB 3D BE AC 48 67 5B 5D 47 94 D2";
+
+void setup() {
+    Serial.begin(115200);
+    //  WiFi.begin("ssid", "pass");
+
+    while(WiFi.status() != WL_CONNECTED) {
+        delay(500);
+        Serial.print(".");
+    }
+
+    configTime(3 * 3600, 0, "pool.ntp.org", "time.nist.gov");
+
+    mqtt.onSecure([](WiFiClientSecure *client, String host) {
+        Serial.printf("Verify: %s\r\n", host.c_str());
+        return client->verify(fingerprint.c_str(), host.c_str());
+    });
+    
+    //topic, data, data is continuing
+    mqtt.onData([](String topic, String data, bool cont) {
+        Serial.printf("Data received, topic: %s, data: %s\r\n", topic.c_str(), data.c_str());
+        mqtt.unSubscribe("/qos0");
+    });
+
+    mqtt.onSubscribe([](int sub_id) {
+        Serial.printf("Subscribe topic id: %d ok\r\n", sub_id);
+        mqtt.publish("/qos0", "qos0", 0, 0);
+    });
+    mqtt.onConnect([]() {
+        Serial.printf("MQTT: Connected\r\n");
+        mqtt.subscribe("/qos0", 0);
+    });
+
+    mqtt.begin("mqtts://test.mosquitto.org:8883");
+    //mqtt.begin("mqtts://test.mosquitto.org:8883", {.lwtTopic = "hello", .lwtMsg = "offline", .lwtQos = 0, .lwtRetain = 0});
+    //mqtt.begin("mqtts://user:pass@mosquito.org:8883");
+    //mqtt.begin("mqtts://user:pass@mosquito.org:8883#clientId");
+
+}
+
+void loop() {
+    mqtt.handle();
+}