исправлен дисконект от базы

index.js

@@ -16,8 +16,50 @@ const mysqlSettings = {
 
 // Start server
 server.listen(8095);
-let listenerMysql = mysql.createConnection(mysqlSettings);
+
-let socketMysql = mysql.createConnection(mysqlSettings);
+let socketMysql;
+function handleSocketDisconnect() {
+	socketMysql = mysql.createConnection(mysqlSettings);
+
+	socketMysql.connect(function(mysqlError) {
+		if (mysqlError) {
+			console.error('error connecting: ' + mysqlError.stack);
+			return;
+		}
+	});
+
+	socketMysql.on('error', function(err) {
+	    console.log('db error', err);
+	    if(err.code === 'PROTOCOL_CONNECTION_LOST') { // Connection to the MySQL server is usually
+	      handleSocketDisconnect();                         // lost due to either server restart, or a
+	    } else {                                      // connnection idle timeout (the wait_timeout
+	      throw err;                                  // server variable configures this)
+	    }
+	});
+}
+handleSocketDisconnect();
+
+let listenerMysql;
+function handleListenerDisconnect() {
+	listenerMysql = mysql.createConnection(mysqlSettings);
+
+	listenerMysql.connect(function(mysqlError) {
+		if (mysqlError) {
+			console.error('error connecting: ' + mysqlError.stack);
+			return;
+		}
+	});
+
+	listenerMysql.on('error', function(err) {
+	    console.log('db error', err);
+	    if(err.code === 'PROTOCOL_CONNECTION_LOST') { // Connection to the MySQL server is usually
+	      handleListenerDisconnect();                         // lost due to either server restart, or a
+	    } else {                                      // connnection idle timeout (the wait_timeout
+	      throw err;                                  // server variable configures this)
+	    }
+	});
+}
+handleListenerDisconnect();
 
 
 app.get('/', function(req, res)
@@ -27,12 +69,6 @@ app.get('/', function(req, res)
 
 app.use(express.static('build'));
 
-socketMysql.connect(function(mysqlError) {
-	if (mysqlError) {
-		console.error('error connecting: ' + mysqlError.stack);
-		return;
-	}
-
 io.on('connection', function(socket)
 {
 	function baseRowData(row)
@@ -117,14 +153,6 @@ socketMysql.connect(function(mysqlError) {
 	});
 });
 
-});
-
-listenerMysql.connect(function(err) {
-	if (err) {
-		console.error('error connecting: ' + err.stack);
-		return;
-	}
- 
 let undoneQueries = 0;
 let pushDatabaseBalance = () => {
 	undoneQueries++;
@@ -226,4 +254,3 @@ listenerMysql.connect(function(err) {
 // spider.on('nodes', (nodes)=>console.log('foundNodes'))
 
 spider.listen(4445)
-});