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POajax success called before request has finished
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  1. POajax success called before request has finished
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    copied!<p>at my whits end with this...</p> <p>The problem I have is that around the same time (roughly 60-70 mins through the request) the success function is called for the ajax request, but the tomcat logs prove that the request is still running. </p> <p>(perspective: the request is supposed to either return an empty string ("") or a html page (of errors) however when the success function is called, it returns a string of length 2 result = " " (2 white space characters)</p> <p>I cannot get this to reproduce in chrome, only IE (which is a problem as we cater specificity for IE)</p> <p>At first I though it was a jQuery issue as I have multiple polls running when the request is sent (to update jQuery progress bar info)</p> <p>However...</p> <p>When I test this with just one asynchronous ajax request (not jQuery) that calls a Java method that just loops for 3 hours printing out in the log each second, it always calls success around the 3600 second mark (still another 7200 seconds remaining).</p> <p>Example code: </p> <pre><code>var http_request = false; if (window.XMLHttpRequest) { http_request = new XMLHttpRequest(); if (http_request.overrideMimeType) { http_request.overrideMimeType('text/text'); } } else if (window.ActiveXObject) { try { http_request = new ActiveXObject("Msxml2.XMLHTTP"); } catch (e) { try { http_request = new ActiveXObject("Microsoft.XMLHTTP"); } catch (e) {} } } if (!http_request) { alert('Giving up: Cannot create an XMLHTTP instance'); return false; } url += "&amp;random=" + Math.random(); http_request.open('GET', url, true); http_request.onprogress = function () { }; http_request.ontimeout = function () { }; http_request.onerror = function () { }; http_request.onreadystatechange = function(){ if (http_request.readyState == 4) { if (http_request.status == 200) { result = http_request.responseText; alert("success: ("+result.length+") ["+result+"]"); } } }; </code></pre> <p>NOTE: this is not a time-out error (at least not an ajax one) as the ajax time-out options seem to work correctly and return time-out errors accordingly, but as I have said, its not a time-out error...the success function is called too early.</p> <p>Hope somebody can help :)</p> <p>Cheers,<br> Steve.</p> <p><strong>Update:</strong></p> <p>I've run the request with the network tab capturing and it shows that the result was aborted: <a href="http://img255.imageshack.us/img255/3866/ajaxup.jpg" rel="nofollow noreferrer">here</a> </p> <p>Thanks @ArunPJohny, this has given me a new direction to look in. Is there some kind of "onAbort" ajax callback? As I would have thought this kind of response would be caught by the "error:" callback</p> <p><strong>Update 2:</strong></p> <p>I have since found my way to a number of SO topics, more notably: <a href="https://stackoverflow.com/questions/8995085/xmlhttprequest-timeout-abort-not-working-as-expected?rq=1">xmlhttprequest timeout / abort not working as expected?</a> </p> <p>Tim provides some useful links for catching the abort, but still no clue as to why its getting aborted. </p> <p>follow-on: <a href="https://stackoverflow.com/questions/15657598/ieonly-request-aborted">here</a></p>
 

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