led on off with WebSocket architecture

.cproject

 								<option IS_BUILTIN_EMPTY="false" IS_VALUE_EMPTY="false" id="io.sloeber.compiler.cpp.sketch.option.incpath.1935522056" name="Include Paths (-I)" superClass="io.sloeber.compiler.cpp.sketch.option.incpath" valueType="includePath">
 									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/LEDLamp/core/variant}&quot;"/>
 									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/LEDLamp/core/core}&quot;"/>
-									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/LEDLamp/libraries/ESP8266WiFi/src}&quot;"/>
 									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/LEDLamp/libraries/ESP8266WebServer/src}&quot;"/>
 									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/LEDLamp/libraries/EEPROM}&quot;"/>
 									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/LEDLamp/libraries/DNSServer/src}&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/LEDLamp/libraries/WebSockets/src}&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/LEDLamp/libraries/Hash/src}&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/LEDLamp/libraries/ESP8266WiFi/src}&quot;"/>
 								</option>
 								<inputType id="io.sloeber.compiler.cpp.sketch.input.1770649762" name="CPP source files" superClass="io.sloeber.compiler.cpp.sketch.input"/>
 							</tool>
 								<option IS_BUILTIN_EMPTY="false" IS_VALUE_EMPTY="false" id="io.sloeber.compiler.c.sketch.option.incpath.225042047" name="Include Paths (-I)" superClass="io.sloeber.compiler.c.sketch.option.incpath" valueType="includePath">
 									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/LEDLamp/core/variant}&quot;"/>
 									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/LEDLamp/core/core}&quot;"/>
-									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/LEDLamp/libraries/ESP8266WiFi/src}&quot;"/>
 									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/LEDLamp/libraries/ESP8266WebServer/src}&quot;"/>
 									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/LEDLamp/libraries/EEPROM}&quot;"/>
 									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/LEDLamp/libraries/DNSServer/src}&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/LEDLamp/libraries/WebSockets/src}&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/LEDLamp/libraries/Hash/src}&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/LEDLamp/libraries/ESP8266WiFi/src}&quot;"/>
 								</option>
 								<inputType id="io.sloeber.compiler.c.sketch.input.1705705" name="C Source Files" superClass="io.sloeber.compiler.c.sketch.input"/>
 							</tool>
 								<option IS_BUILTIN_EMPTY="false" IS_VALUE_EMPTY="false" id="io.sloeber.compiler.asm.sketch.option.incpath.328612697" name="Include Paths (-I)" superClass="io.sloeber.compiler.asm.sketch.option.incpath" valueType="includePath">
 									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/LEDLamp/core/variant}&quot;"/>
 									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/LEDLamp/core/core}&quot;"/>
-									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/LEDLamp/libraries/ESP8266WiFi/src}&quot;"/>
 									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/LEDLamp/libraries/ESP8266WebServer/src}&quot;"/>
 									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/LEDLamp/libraries/EEPROM}&quot;"/>
 									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/LEDLamp/libraries/DNSServer/src}&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/LEDLamp/libraries/WebSockets/src}&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/LEDLamp/libraries/Hash/src}&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/LEDLamp/libraries/ESP8266WiFi/src}&quot;"/>
 								</option>
 								<inputType id="io.sloeber.compiler.S.sketch.input.1190005390" name="Assembly source files" superClass="io.sloeber.compiler.S.sketch.input"/>
 							</tool>
 						</toolChain>
 					</folderInfo>
 					<sourceEntries>
-						<entry excluding="libraries/?*/**/?xamples/**|libraries/?*/**/?xtras/**|libraries/?*/**/test*/**|libraries/?*/**/third-party/**|libraries/**/._*|libraries/?*/utility/*/*" flags="VALUE_WORKSPACE_PATH|RESOLVED" kind="sourcePath" name=""/>
+						<entry excluding="libraries/WebSockets/travis|libraries/?*/**/?xamples/**|libraries/?*/**/?xtras/**|libraries/?*/**/test*/**|libraries/?*/**/third-party/**|libraries/**/._*|libraries/?*/utility/*/*" flags="VALUE_WORKSPACE_PATH|RESOLVED" kind="sourcePath" name=""/>
 					</sourceEntries>
 				</configuration>
 			</storageModule>

.project

 		<link>
 			<name>core/core</name>
 			<type>2</type>
-			<locationURI>ECLIPSE_HOME/arduinoPlugin/packages/esp8266/hardware/esp8266/2.6.0/cores/esp8266</locationURI>
+			<locationURI>ECLIPSE_HOME/arduinoPlugin/packages/esp8266/hardware/esp8266/3.1.2/cores/esp8266</locationURI>
 		</link>
 		<link>
 			<name>core/variant</name>
 			<type>2</type>
-			<locationURI>ECLIPSE_HOME/arduinoPlugin/packages/esp8266/hardware/esp8266/2.6.0/variants/d1</locationURI>
+			<locationURI>ECLIPSE_HOME/arduinoPlugin/packages/esp8266/hardware/esp8266/3.1.2/variants/d1</locationURI>
 		</link>
 		<link>
 			<name>libraries/DNSServer</name>
 			<type>2</type>
-			<locationURI>ECLIPSE_HOME/arduinoPlugin/packages/esp8266/hardware/esp8266/2.6.0/libraries/DNSServer</locationURI>
+			<locationURI>ECLIPSE_HOME/arduinoPlugin/packages/esp8266/hardware/esp8266/3.1.2/libraries/DNSServer</locationURI>
 		</link>
 		<link>
 			<name>libraries/EEPROM</name>
 			<type>2</type>
-			<locationURI>ECLIPSE_HOME/arduinoPlugin/packages/esp8266/hardware/esp8266/2.6.0/libraries/EEPROM</locationURI>
+			<locationURI>ECLIPSE_HOME/arduinoPlugin/packages/esp8266/hardware/esp8266/3.1.2/libraries/EEPROM</locationURI>
 		</link>
 		<link>
 			<name>libraries/ESP8266WebServer</name>
 			<type>2</type>
-			<locationURI>ECLIPSE_HOME/arduinoPlugin/packages/esp8266/hardware/esp8266/2.6.0/libraries/ESP8266WebServer</locationURI>
+			<locationURI>ECLIPSE_HOME/arduinoPlugin/packages/esp8266/hardware/esp8266/3.1.2/libraries/ESP8266WebServer</locationURI>
 		</link>
 		<link>
 			<name>libraries/ESP8266WiFi</name>
 			<type>2</type>
-			<locationURI>ECLIPSE_HOME/arduinoPlugin/packages/esp8266/hardware/esp8266/2.6.0/libraries/ESP8266WiFi</locationURI>
+			<locationURI>ECLIPSE_HOME/arduinoPlugin/packages/esp8266/hardware/esp8266/3.1.2/libraries/ESP8266WiFi</locationURI>
+		</link>
+		<link>
+			<name>libraries/Hash</name>
+			<type>2</type>
+			<locationURI>ECLIPSE_HOME/arduinoPlugin/packages/esp8266/hardware/esp8266/3.1.2/libraries/Hash</locationURI>
+		</link>
+		<link>
+			<name>libraries/WebSockets</name>
+			<type>2</type>
+			<locationURI>ECLIPSE_HOME/arduinoPlugin/libraries/WebSockets/2.7.2</locationURI>
 		</link>
 	</linkedResources>
 </projectDescription>

.settings/language.settings.xml

 <project>
 	<configuration id="io.sloeber.core.sketch.0" name="Release">
 		<extension point="org.eclipse.cdt.core.LanguageSettingsProvider">
-			<provider class="io.sloeber.core.toolchain.ArduinoLanguageProvider" console="false" env-hash="-201397279775688891" id="io.sloeber.languageSettingsProvider" keep-relative-paths="false" name="Arduino Compiler Settings" parameter="${COMMAND} -E -P -v -dD -D__IN_ECLIPSE__ &quot;${INPUTS}&quot;" prefer-non-shared="true">
+			<provider class="io.sloeber.core.toolchain.ArduinoLanguageProvider" console="false" env-hash="-1642491514133985484" id="io.sloeber.languageSettingsProvider" keep-relative-paths="false" name="Arduino Compiler Settings" parameter="${COMMAND} -E -P -v -dD -D__IN_ECLIPSE__ &quot;${INPUTS}&quot;" prefer-non-shared="true">
 				<language-scope id="org.eclipse.cdt.core.gcc"/>
 				<language-scope id="org.eclipse.cdt.core.g++"/>
 			</provider>

.settings/org.eclipse.cdt.core.prefs

+doxygen/doxygen_new_line_after_brief=true
+doxygen/doxygen_use_brief_tag=false
+doxygen/doxygen_use_javadoc_tags=true
+doxygen/doxygen_use_pre_tag=false
+doxygen/doxygen_use_structural_commands=false
+eclipse.preferences.version=1

.sproject

 Config.Release.board.BOARD.ID=d1
+Config.Release.board.BOARD.MENU.FlashFreq=getMenuItemIDFromMenuItemName did not find menu item with name "40MHz" for menu ID "FlashFreq" and for boardID "d1"!
+Config.Release.board.BOARD.MENU.FlashMode=getMenuItemIDFromMenuItemName did not find menu item with name "DOUT (compatible)" for menu ID "FlashMode" and for boardID "d1"!
 Config.Release.board.BOARD.MENU.baud=921600
 Config.Release.board.BOARD.MENU.dbg=Disabled
 Config.Release.board.BOARD.MENU.eesz=4M2M
-Config.Release.board.BOARD.MENU.exception=legacy
+Config.Release.board.BOARD.MENU.exception=disabled
 Config.Release.board.BOARD.MENU.ip=lm2f
 Config.Release.board.BOARD.MENU.lvl=None____
+Config.Release.board.BOARD.MENU.mmu=3232
+Config.Release.board.BOARD.MENU.non32xfer=fast
 Config.Release.board.BOARD.MENU.ssl=all
+Config.Release.board.BOARD.MENU.stacksmash=disabled
 Config.Release.board.BOARD.MENU.vt=flash
 Config.Release.board.BOARD.MENU.wipe=all
 Config.Release.board.BOARD.MENU.xtal=80
-Config.Release.board.BOARD.TXT=${SLOEBER_HOME}/arduinoPlugin/packages/esp8266/hardware/esp8266/2.6.0/boards.txt
+Config.Release.board.BOARD.TXT=${SLOEBER_HOME}/arduinoPlugin/packages/esp8266/hardware/esp8266/3.1.2/boards.txt
 Config.Release.board.PROGRAMMER.NAME=Default
 Config.Release.board.UPLOAD.PORT=COM3
 Config.Release.compile.sloeber.extra.all=

LEDLamp.ino

 #include "Arduino.h"
-#include <ESP8266WiFi.h>
 #include <ESP8266WebServer.h>
+#include <WebSocketsServer.h>
 #include <EEPROM.h>
 #include <DNSServer.h>
 
 const int ledPin = LED_BUILTIN; // The built-in LED on the Wemos D1 Mini is on GPIO2 (D4)
 
 ESP8266WebServer webServer(80);
-WiFiServer server(1234);
+WebSocketsServer webSocket(81);
 DNSServer dnsServer;
 
 const byte DNS_PORT = 53;
 <body>
 
 <div class="card">
+
   <h2>Wemos Setup</h2>
 
   <div class="mac">Device: )rawliteral"
 					+ R"rawliteral(</div>
 
   <form action="/save" method="POST">
+
     <input name="ssid" placeholder="WLAN Name (SSID)">
-	<div class="pw-wrapper">
-	  <input id="pass" name="pass" type="password" placeholder="Passwort">
-	  <span class="toggle-eye" onclick="togglePassword()">👁</span>
-	</div>
-    <button type="submit">Verbinden</button>
+
+    <div class="pw-wrapper">
+      <input id="pass" name="pass" type="password" placeholder="Passwort">
+      <span class="toggle-eye" onclick="togglePassword()">👁</span>
+    </div>
+
+    <button type="submit">Speichern & Verbinden</button>
   </form>
 
-  <div class="info">
-    Verbinde deinen Wemos mit einem WLAN Netzwerk
+  <div class="btn-row">
+    <button type="button" onclick="ledOn()">LED EIN</button>
+    <button type="button" onclick="ledOff()">LED AUS</button>
   </div>
+
 </div>
 
+<script>
+
+let ws;
+
+function connectWS() {
+  ws = new WebSocket("ws://" + location.hostname + ":81/");
+
+  ws.onopen = () => {
+    console.log("WebSocket connected");
+  };
+
+  ws.onmessage = (e) => {
+    console.log("ESP:", e.data);
+  };
+
+  ws.onclose = () => {
+    console.log("WS disconnected → reconnect");
+    setTimeout(connectWS, 1000);
+  };
+}
+
+connectWS();
+
+function ledOn() {
+  if (ws && ws.readyState === 1) {
+    ws.send("/ledOn");
+  }
+}
+
+function ledOff() {
+  if (ws && ws.readyState === 1) {
+    ws.send("/ledOff");
+  }
+}
+
+function togglePassword() {
+  const pass = document.getElementById("pass");
+  const eye = document.querySelector(".toggle-eye");
+
+  if (pass.type === "password") {
+    pass.type = "text";
+    eye.textContent = "🚫";
+  } else {
+    pass.type = "password";
+    eye.textContent = "👁";
+  }
+}
+
+</script>
+
 </body>
 </html>
 )rawliteral";
 		Serial.print("IP: ");
 		Serial.println(WiFi.localIP());
 
-		server.begin();
-		Serial.println("TCP Server gestartet auf Port 1234");
+		webServer.on("/", handleRoot);
+		webServer.on("/save", HTTP_POST, handleSave);
+		webServer.begin();
+
+		webSocket.begin();
+		webSocket.onEvent(webSocketEvent);
+		Serial.println("WebSocket gestartet auf Port 81");
 
 		return true;
 	}
 
-
 	return false;
 }
 
+void webSocketEvent(uint8_t num, WStype_t type, uint8_t *payload, size_t length) {
+
+	switch (type) {
+
+		case WStype_CONNECTED: {
+
+			IPAddress ip = webSocket.remoteIP(num);
+
+			Serial.printf(
+					"WS Client %u verbunden von %d.%d.%d.%d\n",
+					num,
+					ip[0], ip[1], ip[2], ip[3]);
+
+			webSocket.sendTXT(num, "Connected");
+			break;
+		}
+
+		case WStype_DISCONNECTED:
+			Serial.printf("WS Client %u getrennt\n", num);
+			break;
+
+		case WStype_TEXT: {
+
+			String msg = String((char*) payload);
+
+			Serial.print("WS empfangen: ");
+			Serial.println(msg);
+
+			if (msg == "/ledOn") {
+				digitalWrite(ledPin, LOW);
+				webSocket.sendTXT(num, "LED ON");
+			} else if (msg == "/ledOff") {
+				digitalWrite(ledPin, HIGH);
+				webSocket.sendTXT(num, "LED OFF");
+			} else {
+//				webSocket.sendTXT(num, "ACK: " + msg);
+			}
+
+			break;
+		}
+
+		default:
+			break;
+	}
+}
+
 // ---------- SETUP ----------
 void setup() {
 	Serial.begin(115200);
+	pinMode(ledPin, OUTPUT);
+	digitalWrite(ledPin, HIGH); 	// LED zunächst AUS
 
 	loadConfig();
 
 void loop() {
 
 	if (WiFi.getMode() == WIFI_AP) {
+
 		dnsServer.processNextRequest();
 		webServer.handleClient();
-		return;
-	}
 
-	webServer.handleClient(); // optional auch im STA Mode
-
-	WiFiClient client = server.available();
-
-	if (!client) {
 		return;
 	}
 
-	Serial.println("Client verbunden");
-	client.println("Connected");
-
-	while (client.connected()) {
-
-		if (!client.available()) {
-			delay(1);
-			continue;
-		}
-
-		String msg = client.readStringUntil('\n');
-		msg.trim();
-
-		Serial.print("Empfangen: ");
-		Serial.println(msg);
-
-		client.println("ACK: " + msg);
-
-		if (msg.equalsIgnoreCase("/ledOn")) {
-			digitalWrite(ledPin, LOW);
-		}
-
-		if (msg.equalsIgnoreCase("/ledOff")) {
-			digitalWrite(ledPin, HIGH);
-		}
-
-		if (msg.equalsIgnoreCase("quit")) {
-			break;
-		}
-	}
+	webServer.handleClient();
 
-	client.stop();
-	Serial.println("Client getrennt");
+	webSocket.loop();
 }

sloeber.ino.cpp

 //This is a automatic generated file
 //Please do not modify this file
 //If you touch this file your change will be overwritten during the next build
-//This file has been generated on 2026-06-07 15:50:46
+//This file has been generated on 2026-06-07 22:43:11
 
 #include "Arduino.h"
 #include "Arduino.h"
-#include <ESP8266WiFi.h>
 #include <ESP8266WebServer.h>
+#include <WebSocketsServer.h>
 #include <EEPROM.h>
 #include <DNSServer.h>
 
 void handleNotFound() ;
 void startAP() ;
 bool connectSTA() ;
+void webSocketEvent(uint8_t num, WStype_t type, uint8_t *payload, size_t length) ;
 void setup() ;
 void loop() ;