WS server test page

HTTP/1.0 200 
server: libwebsockets
content-type: text/html
content-length: 2524
x-frame-options: SAMEORIGIN
content-security-policy: default-src 'self'; connect-src 'self'; script-src 'self' 'unsafe-inline' 'unsafe-eval'; style-src 'self' 'unsafe-inline'; font-src 'self';frame-ancestors 'none';