<!DOCTYPE html>
<html>
<head>
<title>slave tab pages which create hanging wss connection</title>
<script type="text/javascript">
var href = window.location.href;
var hostBegin = href.indexOf('/') + 2;
var hostEnd = href.lastIndexOf(':');
var host = href.slice(hostBegin, hostEnd);
var queryBegin = href.lastIndexOf('?') + 1;
var port = href.slice(queryBegin);
var url = 'wss://' + host + ':' + port;
var ws;
var cb = function() {
  ws = new WebSocket(url);
  ws.onclose = cb;
}
cb();
</script>
</head>
</html>