Using 'https://github.com/blueimp/jQuery-File-Upload' plugin to upload 4GB file, through 100MB chunks. Examined Client-server interaction, noticed upload is failing after 2GB have been loaded. Examining the firebug console, it appears that the plugin is attempting to re-send the same 100MB chunk at the 2GB content range. I am illustrating the request/response headers below as well as the response received from the server using the default php library provided by the plugin.
The first output represents the 1.8GB - 1.9GB transfer The second output represents the 1.9GB - 2GB transfer. The third output is what happens during the next AJAX request. It appears to attempt to transfer another piece, the server now responds with a slightly different JSON message setting the 'type' attribute to 'multipart/form-data' instead of the usual 'video/mp4' it was returning before. Jquery-file-upload on client will continue to send further AJAX requests to the server with the same range until it is manually stopped.
Server Environment Apache/2.2.22, 'PHP 5.3.10-1ubuntu3.7 with Suhosin-Patch', 'Ubuntu 12.04.1 LTS'.
Client Environment Windows 7, Firefox 24.
ClientSide Javascript Implementation:
<script src="/js/vendor/jquery.ui.widget.js"></script>
<script src="/js/jquery.iframe-transport.js"></script>
<script src="/js/jquery.fileupload.js"></script>
<script>
$(function () {
'use strict';
$('#fileupload').fileupload({
maxChunkSize: 100000000, // 100 MB */
url: '/uploadify/jquery_video_upload_submit',
dataType: 'json',
done: function (e,data) {
$.each(data.result.files, function (index, file) {
$('<p/>').text(file.name).appendTo('#files');
});
},
progressall: function (e, data) {
var progress = parseInt(data.loaded / data.total * 100, 10);
$('#progress .progress-bar').css(
'width',
progress + '%'
);
}
}).prop('disabled', !$.support.fileInput)
.parent().addClass($.support.fileInput ? undefined : 'disabled');
});
</script>
Server Side Implementation
public function jquery_video_upload_submit(){
$this->output->set_header('Content-Type: application/json; charset=utf-8');
error_reporting(E_ALL | E_STRICT);
$this->load->library('uploadHandler');
}
Observed Output 1:
Response Headers
Access-Control-Allow-Cred... false
Access-Control-Allow-Head... Content-Type, Content-Range, Content-Disposition
Access-Control-Allow-Meth... OPTIONS, HEAD, GET, POST, PUT, PATCH, DELETE
Access-Control-Allow-Orig... *
Cache-Control no-store, no-cache, must-revalidate
Connection Keep-Alive
Content-Disposition inline; filename="files.json"
Content-Length 204
Content-Type application/json; charset=utf-8
Date Mon, 21 Oct 2013 15:02:28 GMT
Keep-Alive timeout=5, max=93
Pragma no-cache
Range 0-1899999999
Server Apache/2.2.22 (Ubuntu)
Vary Accept
X-Content-Type-Options nosniff
Request Headers
Accept application/json, text/javascript, */*; q=0.01
Accept-Encoding gzip, deflate
Accept-Language en-US,en;q=0.5
Content-Disposition attachment; filename="block%20burner%20movie%2011.1.10(1).mp4"
Content-Length 100000211
Content-Range bytes 1800000000-1899999999/4122624072
Content-Type multipart/form-data; boundary=---------------------------1694899034803
Cookie ci_session=****;
Host dev.****.tv
Referer http://dev.****.tv/tests/jqueryfileupload
User-Agent Mozilla/5.0 (Windows NT 6.1; WOW64; rv:24.0) Gecko/20100101 Firefox/24.0
X-Requested-With XMLHttpRequest
RESPONSE:
{"files":[{"name":"block burner movie 11.1.10(1).mp4","size":1900000000,"type":"video\/mp4","deleteUrl":"http:\/\/dev.****.tv\/?file=block%20burner%20movie%2011.1.10%281%29.mp4","deleteType":"DELETE"}]}
Observed Output 2:
Response Headers
Access-Control-Allow-Cred... false
Access-Control-Allow-Head... Content-Type, Content-Range, Content-Disposition
Access-Control-Allow-Meth... OPTIONS, HEAD, GET, POST, PUT, PATCH, DELETE
Access-Control-Allow-Orig... *
Cache-Control no-store, no-cache, must-revalidate
Connection Keep-Alive
Content-Disposition inline; filename="files.json"
Content-Length 204
Content-Type application/json; charset=utf-8
Date Mon, 21 Oct 2013 15:03:27 GMT
Keep-Alive timeout=5, max=92
Pragma no-cache
Range 0-1999999999
Server Apache/2.2.22 (Ubuntu)
Vary Accept
X-Content-Type-Options nosniff
Request Headers
Accept application/json, text/javascript, */*; q=0.01
Accept-Encoding gzip, deflate
Accept-Language en-US,en;q=0.5
Content-Disposition attachment; filename="block%20burner%20movie%2011.1.10(1).mp4"
Content-Length 100000215
Content-Range bytes 1900000000-1999999999/4122624072
Content-Type multipart/form-data; boundary=---------------------------280133237112097
Cookie ci_session=****
Host dev.****.tv
Referer http://dev.****.tv/tests/jqueryfileupload
User-Agent Mozilla/5.0 (Windows NT 6.1; WOW64; rv:24.0) Gecko/20100101 Firefox/24.0
X-Requested-With XMLHttpRequest
RESPONSE
{"files":[{"name":"block burner movie 11.1.10(1).mp4","size":2000000000,"type":"video\/mp4","deleteUrl":"http:\/\/dev.****.tv\/?file=block%20burner%20movie%2011.1.10%281%29.mp4","deleteType":"DELETE"}]}
Observed Output 3:
Response Headers
Access-Control-Allow-Cred... false
Access-Control-Allow-Head... Content-Type, Content-Range, Content-Disposition
Access-Control-Allow-Meth... OPTIONS, HEAD, GET, POST, PUT, PATCH, DELETE
Access-Control-Allow-Orig... *
Cache-Control no-store, no-cache, must-revalidate
Connection close
Content-Disposition inline; filename="files.json"
Content-Length 266
Content-Type application/json; charset=utf-8
Date Mon, 21 Oct 2013 15:04:26 GMT
Pragma no-cache
Range 0-1999999999
Server Apache/2.2.22 (Ubuntu)
Vary Accept
X-Content-Type-Options nosniff
Request Headers
Accept application/json, text/javascript, */*; q=0.01
Accept-Encoding gzip, deflate
Accept-Language en-US,en;q=0.5
Content-Disposition attachment; filename="block%20burner%20movie%2011.1.10(1).mp4"
Content-Length 100000213
Content-Range bytes 2000000000-2099999999/4122624072
Content-Type multipart/form-data; boundary=---------------------------23653531328930
Cookie ci_session=****
Host dev.****.tv
Referer http://dev.****.tv/tests/jqueryfileupload
User-Agent Mozilla/5.0 (Windows NT 6.1; WOW64; rv:24.0) Gecko/20100101 Firefox/24.0
X-Requested-With XMLHttpRequest
RESPONSE
{"files":[{"name":"block burner movie 11.1.10(1).mp4","size":2000000000,"type":"multipart\/form-data; boundary=---------------------------23653531328930","deleteUrl":"http:\/\/dev.****.tv\/?file=block%20burner%20movie%2011.1.10%281%29.mp4","deleteType":"DELETE"}]}
It appears that this is a Firefox Firebug issue. Firebug will respond in unpredictable ways if you try to load large +2GB files as blobs and try to slice them. Turning Firebug off before running the tests works fine, in that Firefox is able to consume large files (+4GB) and slice them (into chunks) without any problems.