File upload form using MVC4 web API: getting error 101 (net :: ERR_CONNECTION_RESET): connection was reset. error

Question

I get a webpage error message when I try to access a controller action in a MVC4 Web-API application with VS2010. I am trying to upload a small size (less than 1 MB) pdf document, create byte [] to switch to another service. However, I can’t get into either my regular controller or my api controller. My application works and all representations / partial / etc. show fine, except for this (page with the file upload form). This representation is strongly typed partial.

I tried using the method shown here: Download the MVC 4 Web API.NET 4 file , and also here: http://blogs.msdn.com/b/henrikn/archive/2012/03/01/file-upload-and- asp-net-web-api.aspx , and both of them do not work because my action attribute cannot find my action. I put api / Documents or Home / api / Documents, this will not work. So I gave up and returned to my beginform html helper, hoping that he would find it that way ... but that is not the case. Therefore, abandoning the fancy web-api stuff (I couldn’t get async to work), I thought that I would just go to the old school and submit the file through the form, but I get the same error. I also tried to recreate the page, configure my httphandlers, runtime settings, routes and apiroutes, and I am completely at a loss. Please, help!

My user interface:

My mistake:

My form:

<div class="tab-pane" id="addDoc"> @using (Html.BeginForm("AddDocument", "Documents", FormMethod.Post, new { @class = "form-horizontal", @enctype = "multipart/form-data" })) { <label class="control-label" for="newFile">Upload : </label> <input name="newFile" type="file" /> <input type="submit" value="Submit" class="btn btn-success"/> } </div> 

My API controller: I know this does not make sense, but I have a breakpoint to just see if it is even here, and it is not ...

  [HttpPost] public AddDocumentResponse AddDocument(HttpPostedFileBase newFile) { AddDocumentResponse response = new AddDocumentResponse(); return response; } 

My regular controller Action:

  [HttpPost] public ActionResult AddDocument(HttpPostedFileBase newFile) { return View("DevNotes"); } 

My WebApiConfig:

  public static void Register(HttpConfiguration config) { config.Routes.MapHttpRoute( name: "DefaultApi", routeTemplate: "Home/api/{controller}/{id}", defaults: new { id = RouteParameter.Optional } ); } 

My RouteConfig:

  public static void RegisterRoutes(RouteCollection routes) { routes.IgnoreRoute("{resource}.axd/{*pathInfo}"); routes.MapRoute( name: "Default", url: "{controller}/{action}/{id}", defaults: new { controller = "Home", action = "Index", id = UrlParameter.Optional } ); routes.MapRoute( name: "Default2", url: "Home/{controller}/{action}/{id}", defaults: new { controller = "Home", action = "Index", id = UrlParameter.Optional } ); } 

Part of my webconfig:

  <httpHandlers> <add path="*.less" verb="GET" type="dotless.Core.LessCssHttpHandler, dotless.Core" /> </httpHandlers> <httpRuntime executionTimeout="99009" maxRequestLength="2097151"/> 

Answer 1

I have the same error sometimes due to the installed Fiddler. When it is configured to run as a proxy server, it makes changes to the configuration of your local network, so it works as a proxy server, and sometimes the system will not work without Fiddler. Hope this helps.

Answer 2

I think .... in

@using (Html.BeginForm (

  "AddDocument", //Action "Documents", // Controller (only controller name not accept in web api route you written constant string as ( Home/api/ then controller name) so write like that...) 

// Here you write where the URL should go, instead of "Documents"

// if you want the web api config ===> to write "Home / api / Documents"

// if you want in Route Config ===> for the 1st "Docunment" for the second "Home / Document"

  FormMethod.Post, new { @class = "form-horizontal", @enctype = "multipart/form-data" })) { } 

On the error page, see the URL as / Index / AddDocument .... which goes wrong. therefore, check the URL correctly or not and GIVE THE MOST NAME OF THE CONTROLLER AND ACTIONS HOW TO DETERMINE IN THE ROUTE FILES ....

Answer 3

For me, the problem was in nginx:

 http { client_max_body_size 0; } 

I set client_max_body_size to 0. The default value is 1M.

Source: https://serverfault.com/a/401732