Limit for sending files

Question

I have a project in Asp Net MVC . NET Framework 4 as follows:

View:

<div class="file-content">
    <label class="custom-file-upload">
          <input type="file" id="importar-arquivos" multiple accept=".pdf" name="arquivo" required />
          <span class="ui-icon ui-icon-circle-arrow-n file-icon"></span> Escolher Arquivos
    </label>
    <br />
    <span id="file-selected">​​</span>
</div>

<div class="options-content">
    <img src="../Images/save-send.png" id="file-enviar" class="icon-action" title="Enviar" />
    <img src="../Images/btnerror.png" id="file-cancelar" class="icon-action" title="Cancelar" />
</div>

<script>
    (function () {
        $("#file-enviar").on("click", function () {
            try {
               var fileImput = $("#importar-arquivos");
                var arquivos = fileImput.get(0).files;

                if (arquivos.length > 0) {

                    prepararPDF(arquivos);

                } else {
                    alert("Selecione os arquivos para enviar!");
                }
            } catch (ex) {
                console.error("Erro ao enviar arquivo!", ex);
            }
        });

        function prepararPDF(arquivos) {
            var paramsData = new FormData();
            for (var i = 0; i < arquivos.length; i++) {
                paramsData.append("files", arquivos[i]);
            }

            enviarPDF(paramsData);
        }

        function enviarPDF(paramsData) {
            $.ajax({
                beforeSend: function () {
                    IniciaLoad();
                },
                complete: function () {
                    FinalizaLoad();
                },
                contentType: false,
                processData: false,
                dataType: "json",
                type: "POST",
                url: "minhaURL",
                data: paramsData,
                success: function (data) {
                    console.debug("data", data);
                },
                fail: function () {
                    alert("Falhou!");
                },
                error: function () {
                    alert("Erro de Conexão");
                }
            });
        }

    })();
</script>

Controller:

[HttpPost]
public ActionResult MinhaAction(HttpPostedFileBase[] files)
{
   return Json(files.Length, JsonRequestBehavior.AllowGet);
}

When performing tests with few small files nay got no problem, but while trying to send multiple larger files then got the following error:

HTTP Error 404.13 - Not Found
The request filtering module is configured to deny a request that exceeds the requested content size.

1. The problem is the amount of files, the size of each theirs or the sum of the size of all files?
2. What is the default limit for amount of archives and size theirs?
3. How can I set a higher limit?

Answer 1

There are two settings to be modified.

maxRequestLength indicates the maximum size of an upload supported by ASP.NET maxAllowedContentLength specifies the maximum content size of a request supported by IIS.

Expand the acceptable file size by adjusting the following file entry web config.:

web config.

 <system.web> 
     <httpRuntime maxRequestLength="104857600"/> 
 </system.web>
 <system.webServer>
    <security>
      <requestFiltering>
        <requestLimits maxAllowedContentLength="104857600"/>
      </requestFiltering>
    </security>
  </system.webServer>

Where maxAllowedContentLength is measured in bytes, whose default value is 30000000, (approximately 28.6MB).

The maximum number of sequential files to be sent is 4.294.967.295 (NTFS) or by the sum of their sizes plus the Multipart header, whichever is less.

In case the problem persists, it may be in fact that the settings made in the file web.config may be replaced by definitions both in applicationhost.config how much in machine.config.

If you have access to these, check if the property overrideModeDefault of the corresponding sections are defined as Allow, as in the following example:

machine config.

<requestFiltering overrideModeDefault="Allow">
    <requestLimits maxAllowedContentLength="104857600"/>        
</requestFiltering>

There is, as far as I know, no way to override these settings if you do not have access to the corresponding configuration file.

Source.

Answer 2

In the httpRuntime within your web.config you can specify the maxRequestLength which will determine the maximum size of your requests.

The maximum size of requests, in kilobytes. The default size is 4096 KB (4 MB).

Source

There are other questions and answers on the subject.

/a/94181/5846

/a/114102/5846

Answer 3

The default size limit for each file is 4mb or 4096 KB on Asp.net

To set the size for the entire application, simply add the following to your web.config:

<configuration>
  <system.web>
    <httpRuntime maxRequestLength="xxx" />
  </system.web>
</configuration>

The value xxx you replace with the maximum value you want to allow in kb.