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POCAS authentication and redirects with jQuery AJAX
 

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    <p>I've got an HTML page that needs to make requests to a CAS-protected (<a href="http://en.wikipedia.org/wiki/Central_Authentication_Service" rel="nofollow noreferrer">Central Authentication Service</a>) web service using the jQuery AJAX functions. I've got the following code:</p> <pre><code>$.ajax({ type: "GET", url: request, dataType: "json", complete: function(xmlHttp) { console.log(xmlHttp); alert(xmlHttp.status); }, success: handleRedirects }); </code></pre> <p>The <code>request</code> variable can be either to the CAS server (<code>https://cas.mydomain.com/login?service=myServiceURL</code>) or directly to the service (which should then redirect back to CAS to get a service ticket). Firebug shows that the request is being made and that it comes back as a 302 redirect. However, the <code>$.ajax()</code> function isn't handling the redirect.</p> <p>I wrote this function to work around this:</p> <pre><code>var handleRedirects = function(data, textStatus) { console.log(data, textStatus); if (data.redirect) { console.log("Calling a redirect: " + data.redirect); $.get(data.redirect, handleRedirects); } else { //function that handles the actual data processing gotResponse(data); } }; </code></pre> <p>However, even with this, the <code>handleRedirects</code> function never gets called, and the <code>xmlHttp.status</code> always returns <code>0</code>. It also doesn't look like the cookies are getting sent with the cas.mydomain.com call. (See <a href="https://stackoverflow.com/questions/1887742/ajax-call-through-cas">this question</a> for a similar problem.)</p> <p>Is this a problem with the AJAX calls not handling redirects, or is there more going on here than meets the eye?</p>
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