move 404 handler public, remove 404 info, add examples for overrides

WiFiManager.cpp

@@ -2386,16 +2386,20 @@ void WiFiManager::handleNotFound() {
   if (captivePortal()) return; // If captive portal redirect instead of displaying the page
   handleRequest();
   String message = FPSTR(S_notfound); // @token notfound
-  message += FPSTR(S_uri); // @token uri
-  message += server->uri();
-  message += FPSTR(S_method); // @token method
-  message += ( server->method() == HTTP_GET ) ? FPSTR(S_GET) : FPSTR(S_POST);
-  message += FPSTR(S_args); // @token args
-  message += server->args();
-  message += F("\n");
 
-  for ( uint8_t i = 0; i < server->args(); i++ ) {
-    message += " " + server->argName ( i ) + ": " + server->arg ( i ) + "\n";
+  bool verbose404 = false; // show info in 404 body, uri,method, args
+  if(verbose404){
+    message += FPSTR(S_uri); // @token uri
+    message += server->uri();
+    message += FPSTR(S_method); // @token method
+    message += ( server->method() == HTTP_GET ) ? FPSTR(S_GET) : FPSTR(S_POST);
+    message += FPSTR(S_args); // @token args
+    message += server->args();
+    message += F("\n");
+
+    for ( uint8_t i = 0; i < server->args(); i++ ) {
+      message += " " + server->argName ( i ) + ": " + server->arg ( i ) + "\n";
+    }
   }
   server->sendHeader(F("Cache-Control"), F("no-cache, no-store, must-revalidate")); // @HTTPHEAD send cache
   server->sendHeader(F("Pragma"), F("no-cache"));

WiFiManager.h

@@ -646,13 +646,16 @@ class WiFiManager
     void          updateConxResult(uint8_t status);
 
     // webserver handlers
+public:
+    void          handleNotFound();
+private:
     void          HTTPSend(const String &content);
     void          handleRoot();
     void          handleWifi(boolean scan);
     void          handleWifiSave();
     void          handleInfo();
     void          handleReset();
-    void          handleNotFound();
+
     void          handleExit();
     void          handleClose();
     // void          handleErase();

examples/Super/OnDemandConfigPortal/OnDemandConfigPortal.ino

@@ -72,8 +72,12 @@ void saveParamCallback(){
 }
 
 void bindServerCallback(){
-  wm.server->on("/custom",handleRoute); // this is now crashing esp32 for some reason
-  // wm.server->on("/info",handleRoute); // you can override wm!
+  wm.server->on("/custom",handleRoute);
+
+  // you can override wm route endpoints, I have not found a way to remove handlers, but this would let you disable them or add auth etc.
+  // wm.server->on("/info",handleNotFound);
+  // wm.server->on("/update",handleNotFound);
+  wm.server->on("/erase",handleNotFound);
 }
 
 void handleRoute(){
@@ -81,6 +85,11 @@ void handleRoute(){
   wm.server->send(200, "text/plain", "hello from user code");
 }
 
+void handleNotFound(){
+  Serial.println("[HTTP] handle route");
+  wm.handleNotFound();
+}
+
 void handlePreOtaUpdateCallback(){
   Update.onProgress([](unsigned int progress, unsigned int total) {
         Serial.printf("CUSTOM Progress: %u%%\r", (progress / (total / 100)));