update to start with millis reporting

10_wifi_conf.ino

@@ -35,7 +35,7 @@ void wifi_associate() {
     net.setInsecure();    // Do not check fingerprint
     net.setTimeout(15000); // 15 Seconds  
 
-/*    PRINT_SERIAL("Setting time using SNTP");
+    PRINT_SERIAL("Setting time using SNTP");
     configTime(-5 * 3600, 0, "pool.ntp.org", "time.nist.gov");
     now = time(nullptr);
     while (now < 1510592825) {
@@ -47,16 +47,64 @@ void wifi_associate() {
     struct tm timeinfo;
     gmtime_r(&now, &timeinfo);
     PRINT_SERIAL("Current time: ");
-    APPENDLN_SERIAL(asctime(&timeinfo)); */
+    APPENDLN_SERIAL(asctime(&timeinfo)); 
   }
 }
 
+void wifi_checkin() {
+      // 'Native' in WiFiClient because we need to push the entire clientbuffer in the API
+      // As a result copying the buffer in to a new String for HTTPClient library use is highly inefficient
+      if (!net.connect(OTA_SERVER, OTA_PORT)) {
+        Serial.println("HTTPS connection failed");
+      } else {
+        Serial.println("HTTPS connection up");
+
+    // Check for firmware upgrades
+    String version = settings.name;
+    version.concat("-v");
+    version.concat(FW_VERSION);
+
+        String json = "{\"mac\":\"" + WiFi.macAddress() + "\",";
+        json.concat("\"version\":\"" + version + "\",");
+        json.concat("\"millis\":" + String(millis()) + "}");
+        
+        // Send request to the server:
+        net.println("POST " OTA_CHECKIN " HTTP/1.1");
+        net.println("Host: " OTA_SERVER);
+        net.println("Accept: */*");
+        net.println("Content-Type: application/json");
+        net.print("Content-Length: ");
+        net.println(json.length());
+        net.println("Connection: close");
+        net.println();
+        // Construct the REST/JSON POST data
+        net.print(json);
+        Serial.println("POST sent");
+      
+        while (net.connected()) {
+          String line = net.readStringUntil('\n');
+          if (line == "\r") {
+            Serial.println("Headers received");
+            break;
+          }
+        }
+        String line = net.readStringUntil('\n');
+        Serial.println("reply was:");
+        Serial.println("==========");
+        Serial.println(line);
+        Serial.println("==========");
+        Serial.println("closing connection");
+        net.stop();  // DISCONNECT FROM THE SERVER
+      }
+}
+
 void wifi_setup() {
 //  WifiManager.setAPCallback(WifiManagerCallback); // Enable WifiManager callback to clear the cache
   wifi_associate();
 }
 
 void wifi_loop() {
+
   if(WiFi.status() != WL_CONNECTED) {
     PRINTLN_SERIAL("Wifi disconnected, trying to reconnect");
     wifi_associate();
@@ -74,6 +122,8 @@ void wifi_loop() {
         PRINTLN_SERIAL("net.status: " + String(net.status()));
 
     t_httpUpdate_return ret = ESPhttpUpdate.update(net, OTA_SERVER, OTA_PORT, OTA_URI, version);
+              PRINTLN_SERIAL("after httpupdate check net.status: " + String(net.status()));
+
     switch(ret) {
     case HTTP_UPDATE_FAILED: // HTTP 403, 404
         PRINT_SERIAL("Connection error, update failed ");
@@ -90,5 +140,9 @@ void wifi_loop() {
         break;
     }
     ota_lastcheck = ota_check;
+    
+    // Check in with IoT server
+    wifi_checkin();
   }
+
 }