javascript - Cannot send a file through FormData object in http request. Formidable cannot find any file in server end -


i want upload file angularjs in client side , nodejs , express in server side. in angular, i'm using lf-ng-md-file-input directive upload file. in server side, i'm using package formidable parse multipart form data. here html code:

<lf-ng-md-file-input lf-submit-label="upload" lf-files="files"      submit lf-on-submit-click="onsubmitclick"      ng-change="onsubmitfileschange()" progress> </lf-ng-md-file-input>

and angular code submit click:

$scope.onsubmitclick = function(files) {     console.log(files[0])            //this shows file object correctly     console.log($scope.file)     var formdata = new formdata()     angular.foreach(files,function(obj){         if(!obj.isremote){             console.log(obj)             formdata.append('files', obj.lffile);         }     });     formdata.append('source', $scope.file.source);     formdata.append('batch', $scope.file.batch);     (var pair of formdata.entries()) {         console.log(pair[0]+ ', ' + pair[1]);      }     $http.post(config.serverurl + "/upload", formdata, {         transformrequest: angular.identity,         headers: {'content-type': undefined}     }).then(function(result){         // sometingh          console.log(result)                       },function(err){         // sometingh     }); }

this server side code in node js:

var formidable  = require('formidable') app.use(express.static(__dirname + '/public')) app.post('/upload',function(req,res){     var form = new formidable.incomingform();     form.uploaddir = __dirname +'/public/uploads';     form.keepextensions = true;     console.log(form)     console.log(req.body)     //file upload path     form.parse(req, function(err, fields, files) {         //you can fields here         console.log("parsing")         console.log(fields)         console.log(files)     });     form.on ('filebegin', function(name, file){         console.log("file begin")         file.path = form.uploaddir + "/" + file.name;         //modify file path     });     form.on('progress', function(err) {         console.log("on progress")     });     form.on('field', function(err) {         console.log("fields found")     });     form.on('file', function(err) {         console.log("file found")     });     form.on('error', function(err) {         console.log("error occured")         res.sendstatus(400);     });     form.on('aborted', function(err) {         console.log("aborted")     });     form.on ('end', function(){         console.log("in end")         res.sendstatus(200);         //when finish process         }); });

but problem is, in server side, req.body showing other fields there nothing found in form. shows aborted due timeout. form.parse not working @ all.

please suggest how can find file in form object @ server side


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