drawio/war/WEB-INF/appengine-web.xml

<?xml version="1.0" encoding="utf-8"?>
<appengine-web-app xmlns="http://appengine.google.com/ns/1.0">
	<application>drawdotio</application>
	<!-- IMPORTANT! DO NOT CHANGE THIS VALUE IN SOURCE CONTROL! -->
	<version>test</version>
	
	<!-- Configure java.util.logging -->
	<system-properties>
		<property name="java.util.logging.config.file" value="WEB-INF/logging.properties"/>
	</system-properties>

	<sessions-enabled>false</sessions-enabled>
	<threadsafe>false</threadsafe>

	<!-- FOR LOCAL TESTING OF EMBED2 WITH DYNAMIC LOADING -->
	<static-files>
		<include path="/styles/**" >
			<http-header name="Access-Control-Allow-Origin" value="*" />
    	</include>
    	<include path="/stencils/**" >
			<http-header name="Access-Control-Allow-Origin" value="*" />
    	</include>
    	<include path="/shapes/**" >
			<http-header name="Access-Control-Allow-Origin" value="*" />
    	</include>
    	<include path="/**" />
	</static-files>

</appengine-web-app>