[fix] use currentsite.txt only if host is localhost

socketio.js

@@ -171,12 +171,14 @@ function get_task_room(socket, task_id) {
 }
 
 function get_site_name(socket) {
-	if (conf.default_site) {
-		return conf.default_site;
-	}
-	else if (socket.request.headers['x-frappe-site-name']) {
+	if (socket.request.headers['x-frappe-site-name']) {
 		return get_hostname(socket.request.headers['x-frappe-site-name']);
 	}
+	else if (['localhost', '127.0.0.1'].indexOf(socket.request.headers.host) !== -1
+		&& conf.default_site) {
+		// from currentsite.txt since host is localhost
+		return conf.default_site;
+	}
 	else if (socket.request.headers.origin) {
 		return get_hostname(socket.request.headers.origin);
 	}