Return an informative message if web content files are unavailable.

src/mesh/http/ContentHandler.cpp

@@ -297,14 +297,21 @@ void handleStatic(HTTPRequest *req, HTTPResponse *res)
             file = SPIFFS.open(filenameGzip.c_str());
             res->setHeader("Content-Encoding", "gzip");
             if (!file.available()) {
-                DEBUG_MSG("File not available\n");
+                DEBUG_MSG("File not available - %s\n", filenameGzip.c_str());
             }
         } else {
             has_set_content_type = true;
             filenameGzip = "/static/index.html.gz";
             file = SPIFFS.open(filenameGzip.c_str());
-            res->setHeader("Content-Encoding", "gzip");
             res->setHeader("Content-Type", "text/html");
+            if (!file.available()) {
+                DEBUG_MSG("File not available - %s\n", filenameGzip.c_str());
+                res->println("Web server is running.<br><br>The content you are looking for can't be found. Please see: <a "
+                             "href=https://meshtastic.org/docs/getting-started/faq#wifi--web-browser>FAQ</a>.<br><br><a "
+                             "href=/json/report>stats</a>");
+            } else {
+                res->setHeader("Content-Encoding", "gzip");
+            }
         }
 
         res->setHeader("Content-Length", httpsserver::intToString(file.size()));
@@ -576,6 +583,7 @@ void handleReport(HTTPRequest *req, HTTPResponse *res)
     res->println("},");
 
     res->println("\"device\": {");
+    res->printf("\"channel_utilization\": %3.2f%,\n", airTime->channelUtilizationPercent());
     res->printf("\"reboot_counter\": %d\n", myNodeInfo.reboot_count);
     res->println("},");
 

src/mesh/http/WiFiAPClient.cpp

@@ -3,9 +3,9 @@
 #include "concurrency/Periodic.h"
 #include "configuration.h"
 #include "main.h"
-#include "mqtt/MQTT.h"
 #include "mesh/http/WebServer.h"
 #include "mesh/wifi/WiFiServerAPI.h"
+#include "mqtt/MQTT.h"
 #include "target_specific.h"
 #include <DNSServer.h>
 #include <ESPmDNS.h>
@@ -132,30 +132,30 @@ static void onNetworkConnected()
         initApiServer();
 
         APStartupComplete = true;
-    } 
+    }
 
     // FIXME this is kinda yucky, instead we should just have an observable for 'wifireconnected'
-    if(mqtt)
+    if (mqtt)
         mqtt->reconnect();
 }
 
 // Startup WiFi
 bool initWifi(bool forceSoftAP)
 {
-    if (forceSoftAP) {
-        DEBUG_MSG("WiFi ... Forced AP Mode\n");
-    } else if (radioConfig.preferences.wifi_ap_mode) {
-        DEBUG_MSG("WiFi ... AP Mode\n");
-    } else {
-        DEBUG_MSG("WiFi ... Client Mode\n");
-    }
-
     forcedSoftAP = forceSoftAP;
 
     if ((radioConfig.has_preferences && radioConfig.preferences.wifi_ssid[0]) || forceSoftAP) {
         const char *wifiName = radioConfig.preferences.wifi_ssid;
         const char *wifiPsw = radioConfig.preferences.wifi_password;
 
+        if (forceSoftAP) {
+            DEBUG_MSG("WiFi ... Forced AP Mode\n");
+        } else if (radioConfig.preferences.wifi_ap_mode) {
+            DEBUG_MSG("WiFi ... AP Mode\n");
+        } else {
+            DEBUG_MSG("WiFi ... Client Mode\n");
+        }
+
         createSSLCert();
 
         if (!*wifiPsw) // Treat empty password as no password
@@ -176,7 +176,6 @@ bool initWifi(bool forceSoftAP)
 
                 } else {
                     DEBUG_MSG("Starting WIFI AP: ssid=%s, ok=%d\n", wifiName, WiFi.softAP(wifiName, wifiPsw));
-
                 }
 
                 WiFi.softAPConfig(apIP, apIP, IPAddress(255, 255, 255, 0));