5

I try to send large message json(with images) using HttpClient.PostAsJsonAsync from one side and try get data in Controller using Microsoft.AspNet.Mvc version="5.2.3".

When I send small messages everything is okey.

Move code details: 

private async Task<HttpResponseMessage> Method<TRequest>(string url, TRequest request,
        IEnumerable<KeyValuePair<string, string>> headers)
      {
        using (var client = new HttpClient(_httpClientHandlerFactory.CreateHandler()))
        {
            client.DefaultRequestHeaders.Accept.Clear();
            client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
            client.DefaultRequestHeaders.CacheControl = new CacheControlHeaderValue { NoCache = true };
            AddHeadersToClient(client, headers);

            var response = await client.PostAsJsonAsync(url, request);
            ...

and on other side:

   public class MyController: Controller
   {
    [HttpPost]
    public ActionResult EmailBody(string siteShortName, string templateName, RequestAcceptType acceptType, [DynamicJson] dynamic model) 
    {
        //Some logic
        return View(viewPath, model);
    }
...

And when sending message I get

Error during serialization or deserialization using the JSON JavaScriptSerializer. The length of the string exceeds the value set on the maxJsonLength property.

According article Can I set an unlimited length for maxJsonLength in web.config? I try to solve issue with different approches:

And in all cases I have the same issue.

Community
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Anton Anikeev
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1 Answers1

0

Its strange to get the max lenght, but are you using base64 images? depending on quantity of images, you can easily get the max Json lenght just like that.

I can suggest a alternative to send large emails with images base64, you can create a view in html and parse with razor engine.

string view = Server.MapPath("~/Views/_YourView.cshtml");
string template = System.IO.File.ReadAllText(view);
body = Razor.Parse(template, youmodel);
Leandro
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