WS reconnect logic & WS memory leak protection

wled00/data/index.js

@@ -956,7 +956,7 @@ function cmpP(a, b) {
 function makeWS() {
 	if (ws) return;
 	ws = new WebSocket('ws://'+(loc?locip:window.location.hostname)+'/ws');
-  ws.binaryType = "arraybuffer";
+	ws.binaryType = "arraybuffer";
 	ws.onmessage = function(event) {
     if (event.data instanceof ArrayBuffer) return; //liveview packet
 		var json = JSON.parse(event.data);
@@ -974,9 +974,15 @@ function makeWS() {
 		displayRover(info, s);
 		readState(json.state);
 	};
-	ws.onclose = function(event) {
-    	d.getElementById('connind').style.backgroundColor = "#831";
-  	}
+	ws.onclose = (e)=>{
+		d.getElementById('connind').style.backgroundColor = "#831";
+		ws = null;
+		if (lastinfo.ws > -1) setTimeout(makeWS,500); //retry WS connection
+	}
+	ws.onopen = (e)=>{
+		ws.send("{'v':true}");
+		reqsLegal = true;
+	}
 }
 
 function readState(s,command=false) {

wled00/ws.cpp

@@ -108,9 +108,12 @@ void sendDataWs(AsyncWebSocketClient * client)
     JsonObject info  = doc.createNestedObject("info");
     serializeInfo(info);
     size_t len = measureJson(doc);
-    buffer = ws.makeBuffer(len);
-    if (!buffer) {
+    size_t heap1 = ESP.getFreeHeap();
+    buffer = ws.makeBuffer(len); // will not allocate correct memory sometimes
+    size_t heap2 = ESP.getFreeHeap();
+    if (!buffer || heap1-heap2<len) {
       releaseJSONBufferLock();
+      ws.cleanupClients(0); // disconnect all clients to release memory
       return; //out of memory
     }
     serializeJson(doc, (char *)buffer->get(), len +1);
@@ -155,7 +158,11 @@ void handleWs()
 {
   if (millis() - wsLastLiveTime > WS_LIVE_INTERVAL)
   {
+    #ifdef ESP8266
+    ws.cleanupClients(2);
+    #else
     ws.cleanupClients();
+    #endif
     bool success = true;
     if (wsLiveClientId)
       success = sendLiveLedsWs(wsLiveClientId);