XDomain doesn't give up waiting for an iframe to respond

[sqrter]

The wiki says that timeout is the

Number of milliseconds until XDomains gives up waiting for an iframe to respond

The problem is that even if I set up timeout XDomains raises 'timeout' event and continues connecting.
Here is my setup:

<script>//if xdomain.min.js emits timeout event we should check local storage
  xdomain.timeout = 1e3;
  xdomain.debug = true;
  xdomain.on('timeout', function (e) {
     //some code
  })</script> 

Here is the browser console output:

xdomain.min.js:3 Mixed Content: The page at 'https://env-123.appengine.flow.ch/#/login' was loaded over HTTPS, but requested an insecure resource 'http://www.somesite.com/proxy.html'. 
This request has been blocked; the content must be served over HTTPS.n @ xdomain.min.js:3(anonymous function) @ xdomain.min.js:3g @ xdomain.min.js:3k.send @ xdomain.min.js:3send @ vendor.19101bd1.js:4ajax 
@ vendor.19101bd1.js:4(anonymous function) @ scripts.e70f4010.js:1ajax @ scripts.e70f4010.js:1getJSON @ scripts.e70f4010.js:1InsurerKVG.updateRatings @ scripts.e70f4010.js:2(anonymous function) @ scripts.e70f4010.js:3
2016-07-05 14:22:24.007 xdomain.min.js:3 xdomain (https://env-123.appengine.flow.ch): Timeout waiting on iframe socket
2016-07-05 14:22:24.023 xdomain.min.js:3 xdomain (https://env-123.appengine.flow.ch): proxying request to slave: 'http://www.swupp.ch'
2016-07-05 14:22:24.024 xdomain.min.js:3 xdomain (https://env-123.appengine.flow.ch): new socket: xdomain-591e2fd7
2016-07-05 14:22:25.034 xdomain.min.js:3 xdomain (https://env-123.appengine.flow.ch): Timeout waiting on iframe socket
2016-07-05 14:22:25.036 xdomain.min.js:3 xdomain (https://env-123.appengine.flow.ch): proxying request to slave: 'http://www.swupp.ch'
2016-07-05 14:22:25.037 xdomain.min.js:3 xdomain (https://env-123.appengine.flow.ch): new socket: xdomain-2ce86dc8
2016-07-05 14:22:26.046 xdomain.min.js:3 xdomain (https://env-123.appengine.flow.ch): Timeout waiting on iframe socket
2016-07-05 14:22:26.049 xdomain.min.js:3 xdomain (https://env-123.appengine.flow.ch): proxying request to slave: 'http://www.swupp.ch'
2016-07-05 14:22:26.050 xdomain.min.js:3 xdomain (https://env-123.appengine.flow.ch): new socket: xdomain-88768566
2016-07-05 14:22:27.062 xdomain.min.js:3 xdomain (https://env-123.appengine.flow.ch): Timeout waiting on iframe socket
2016-07-05 14:22:27.064 xdomain.min.js:3 xdomain (https://env-123.appengine.flow.ch): proxying request to slave: 'http://www.swupp.ch'
2016-07-05 14:22:27.067 xdomain.min.js:3 xdomain (https://env-123.appengine.flow.ch): new socket: xdomain-c2c11ab4
2016-07-05 14:22:28.077 xdomain.min.js:3 xdomain (https://env-123.appengine.flow.ch): Timeout waiting on iframe socket
2016-07-05 14:22:28.079 xdomain.min.js:3 xdomain (https://env-123.appengine.flow.ch): proxying request to slave: 'http://www.swupp.ch'
2016-07-05 14:22:28.080 xdomain.min.js:3 xdomain (https://env-123.appengine.flow.ch): new socket: xdomain-c9c4cbd2
2016-07-05 14:22:29.090 xdomain.min.js:3 xdomain (https://env-123.appengine.flow.ch): Timeout waiting on iframe socket
2016-07-05 14:22:29.092 xdomain.min.js:3 xdomain (https://env-123.appengine.flow.ch): proxying request to slave: 'http://www.swupp.ch'
2016-07-05 14:22:29.093 xdomain.min.js:3 xdomain (https://env-123.appengine.flow.ch): new socket: xdomain-ca0fd17c

Looks like timeout is actually the "reconnect timeout"? How can I disable reconnecting all the time?

Thanks in advance!