jquery - Plupload amazon S3 Cache-Control -

we uploading images using plupload amazon s3 bucket. need set cache-control uploaded file.

i have tried adding headers {'cache-control':'155520000'}, , adding under multipart_params. no luck.

the following code use. appreciated.

$(function() {     $('#progressbar').hide();     var uploader = new plupload.uploader({         init : {             filesadded: function(up, files) {                 plupload.each(files, function(file) {                     if (up.files.length > 1) {                         up.removefile(file);                     }                 });             },         },         preinit : {              uploadfile: function(up, file) {                 var filenamevous;                 if('thumb' in file){                     up.settings.multipart_params.key = 'thumb_'+imagename;                   }                 else                 {                     up.settings.multipart_params.key = makeid()+'.jpg';                   }                  imagename = up.settings.multipart_params.key;                 var filenamevous;                 filenamevous = $("#txtimagetitle").val();                  var category;                 category = $("#category").val();                 $.post("<?php echo $this->config->item('actionfeurl'); ?>/pictures/ajax",{imname:imagename,oriname:filenamevous,catname:category,task:'uploadedimage'},function(data)                 {                  });             }         },          runtimes : 'flash,silverlight,html5',         browse_button : 'pickfiles',         container : 'container',         max_file_size : '10mb',         multi_selection: false,         multipart: true,         multipart_params: {             'key': '${filename}',             'filename': '${filename}',             'acl': 'public-read',             'success_action_status': '201',             'awsaccesskeyid' : '<?php echo $accesskeyid; ?>',               'policy': '<?php echo $policy; ?>',             'signature': '<?php echo $signature; ?>'         },         url : 'http://<?php echo $bucket; ?>.s3.amazonaws.com/',         flash_swf_url : '<?php echo $this->config->item('base_url'); ?>/plupload/js/plupload.flash.swf',         silverlight_xap_url : '<?php echo $this->config->item('base_url'); ?>/plupload/js/plupload.silverlight.xap',         filters : [         {title : "image files", extensions : "jpg,gif,png"},         {title : "zip files", extensions : "zip"}         ],     });       $('#uploadfiles').click(function(e) {           var pattern = '<?php echo $blacklistedwordspattern; ?>';         var patt=new regexp(pattern,"gi");         var value = $('#txtimagetitle').val();         if(value==""){             showalertpopup('please enter title.');             return false;         }         if(patt.test(value)) //value value input feild         {             showalertpopup('name contains black listed words.');             return false;         }          if($("#category").val()==""){             showalertpopup('please select category.');             return false;         }         $('#uploadfiles').hide();         $('#progressbar').show();          uploader.start();         e.preventdefault();      });     uploader.init();     uploader.splice();     uploader.bind('beforeupload', function(up, file) {         if('thumb' in file){             up.settings.resize = {width : 190, height : 143, quality : 100};         }         else{             up.settings.resize = {width : 700, height : 450, quality : 100};         }     });      uploader.bind('filesadded', function(up, files) {         $.each(files, function(i, file) {             $('#filelist').html(             '<div style="float:right" id="' + file.id + '">' +             file.name + ' (' + plupload.formatsize(file.size) + ') <b></b>' +             '</div>');         });          up.refresh(); // reposition flash/silverlight     });      uploader.bind('fileuploaded', function(up, file) {         $('#' + file.id + " b").html("100%");         if(!('thumb' in file)) {              file.thumb = true;             file.loaded = 0;             file.percent = 0;             file.status = plupload.queued;             up.trigger("queuechanged");             up.refresh();          }     });        uploader.bind('error', function(up, err) {         $('#filelist').append("<div>error: " + err.code +         ", message: " + err.message +         (err.file ? ", file: " + err.file.name : "") +         "</div>"         );          up.refresh(); // reposition flash/silverlight     });  });  

multipart_params used send/post data along upload request,

for changing headers may add property - header,

hope :

http://www.plupload.com/docs/options#headers