fix: data output via web server on ESP32 fixed

lib/BufferedWebServer/BufferedWebServer.h

@@ -16,18 +16,21 @@ public:
       this->webServer->send(505, F("text/html"), F("HTTP1.1 required"));
       return;
     }
-    #else
-    this->webServer->send(code, contentType, "");
-    #endif
 
     this->webServer->setContentLength(measureJson(content));
+    #else
+    this->webServer->setContentLength(CONTENT_LENGTH_UNKNOWN);
+    this->webServer->sendHeader(F("Content-Length"), String(measureJson(content)));
+    this->webServer->send(code, contentType, emptyString);
+    #endif
+
     serializeJson(content, *this);
     this->flush();
 
     #ifdef ARDUINO_ARCH_ESP8266
     this->webServer->chunkedResponseFinalize();
     #else
-    this->webServer->sendContent("");
+    this->webServer->sendContent(emptyString);
     #endif
   }
 

lib/WebServerHandlers/DynamicPage.h

@@ -72,7 +72,8 @@ public:
       return true;
     }
     #else
-    server.send(200, F("text/html"), "");
+    server.setContentLength(CONTENT_LENGTH_UNKNOWN);
+    server.send(200, "text/html", emptyString);
     #endif
 
     uint8_t* argStartPos = nullptr;
@@ -209,7 +210,7 @@ public:
     #ifdef ARDUINO_ARCH_ESP8266
     server.chunkedResponseFinalize();
     #else
-    server.sendContent("");
+    server.sendContent(emptyString);
     #endif
 
     return true;

src/PortalTask.h

@@ -349,19 +349,11 @@ protected:
 
       auto apCount = WiFi.scanComplete();
       if (apCount <= 0) {
+        if (apCount != WIFI_SCAN_RUNNING) {
           WiFi.scanNetworks(true, true);
-        
-        if (apCount == WIFI_SCAN_RUNNING || apCount == WIFI_SCAN_FAILED) {
-          this->webServer->send(202);
-
-        } else if (apCount == 0) {
-          this->webServer->send(200, "application/json", "[]");
-
-        } else {
-          this->webServer->send(500);
         }
         
-        
+        this->webServer->send(404);
         return;
       }
       
@@ -374,11 +366,11 @@ protected:
         doc[i]["hidden"] = !ssid.length();
         doc[i]["encryptionType"] = WiFi.encryptionType(i);
       }
-
-      WiFi.scanDelete();
       doc.shrinkToFit();
 
       this->bufferedWebServer->send(200, "application/json", doc);
+
+      WiFi.scanDelete();
     });
 
 
@@ -522,7 +514,7 @@ protected:
 
   void loop() {
     // web server
-    if (!this->stateWebServer()) {
+    if (!this->stateWebServer() && (network->isApEnabled() || network->isStaEnabled())) {
       this->startWebServer();
       Log.straceln(FPSTR(L_PORTAL_WEBSERVER), F("Started"));
 

src_data/static/app.js

@@ -171,26 +171,33 @@ function setupNetworkScanForm(formSelector, tableSelector) {
       }
     };
 
-    let attempts = 5;
-    let timer = setInterval(async () => {
+    let attempts = 6;
+    let attemptFn = async () => {
       attempts--;
 
       try {
         let response = await fetch(url, { cache: 'no-cache' });
 
         if (response.status == 200) {
-          clearInterval(timer);
           await onSuccess(response);
 
         } else if (attempts <= 0) {
           await onFailed(response);
+
+        } else {
+          setTimeout(attemptFn, 5000);
         }
 
       } catch (err) {
-        clearInterval(timer);
+        if (attempts <= 0) {
           onFailed(err);
+
+        } else {
+          setTimeout(attemptFn, 10000);
         }
-    }, 2000);
+      }
+    };
+    attemptFn();
   };
 
   form.addEventListener('submit', onSubmitFn);