Failure code in Firefox: 0x805e0006

[da_b0uncer]

Somehow I get an error when using Ajax to pull some JSON data from a PHP script.

The Loader loads all classes asynchronous, but when I try to load the JSON I get this error:

Connection.js:692 

Component returned failure code: 0x805e0006 [nsIXMLHttpRequest.open]

The method is POST, async is true, the domain is the same domain where the script comes from.
Also I have no AddBlock installed on this Firefox (Version 13.0.1 btw.)
When I call the URL directly in the browser, everything works.

[mankz]

Try disabling all addons and plugins? Does it work on a clean Chrome or IE?

[da_b0uncer]

I have a clean Chrome and a clean Firefox 15 installation.
Chrome works, Firefox don't.

I get till

xhr.open(requestOptions.method, requestOptions.url, async);and then it crashes

requestOptions.method is "POST"
requestOptions.url is "server.company-domain.com:8090/devel/some-path-10.123./index.php"
async is true

Also Firefox 15 doesn't show the mentioned error code, but still crashes.

The code is run in an "eval()" function btw.

so I call a function in eval() which calls the whole Ajax stuff from Connection.js

[da_b0uncer]

I reproduced the problem with Chrome.

Seems that Connection.js sends a OPTIONS request, to check permissions for a cross-site request. Which is funny, because the script is on the same domain as the requested JSON.

Request URL : myurl-internal.com:8090/some/rest/api.php

Request Headers
  Access-Control-Request-Headers : origin, x-requested-with, content-type
  Access-Control-Request-Method  : POST
Origin: http://myurl-internal.com:8090