Access the Real URL for JSONP request in AngularJS - angularjs

Question

Here's the basic setup for a JSONP call using $http's JSONP function
var authenticatedUrl = authenticateUrl("http://example.com/getStuff&callback=JSON_CALLBACK");
return $http.jsonp(authenticatedUrl).then(function (response) {
...
}
The problem is, my HMAC authenticator is creating a hash based on the url with callback=JSON_CALLBACK, then by the time angular makes the actual request, the URL changes to have angular.callbacks._0 as the callback param, which makes my authentication hash invalid.
How do I access the real url that will be used for this JSONP request?
From my research, it appears that interceptors is the way to go with this, but I can't seem to find an object with the URL that has the angular.callbacks._0 callback.

Answer 1

If I understand correctly you are using something like Hawk - Single URI Authentication; this is you get a token that you have to attach to the url and the token is valid for that exact url.
The problem you have, it is not angular per-se but the way that every jsonp framework is supposed to work.
I will suggest forking JSONP to add this behavior or doing JSONP manually.
var i = 0;
function call_endpoint(callback) {
i++;
var url = "http://example.com/getStuff&callback=callback_" + i;
//append the token here, or call your endpoints to fetch the endpoint.
window["callback_" + i] = function (data) {
delete window["callback_" + i];
callback(data);
};
script = document.createElement('script');
script.src = url;
var target = document.getElementsByTagName('script')[0] || document.head;
target.parentNode.insertBefore(script, target);
}