Angularjs上传文件

Question

我正在尝试上传文件，但我收到错误（无法加载资源：net :: ERR_CONNECTION_TIMED_OUT）

请帮助我，这是plunker

中的所有代码

    myApp.controller('myCtrl', ['$scope', 'fileUpload', function($scope, fileUpload){
        $scope.uploadFile = function(){
            var file = $scope.myFile;
            console.log('file is ' );
            console.dir(file);
            var uploadUrl = "http://10.10.10.50:8080/upload";
            fileUpload.uploadFileToUrl(file, uploadUrl);
        };
    }]);