Post large string to Web API controller

Question

I have a following controller

public class MyController : ApiController
{
   [HttpPost]
   public string LoadData(string currentState)
   {

   }
}

I post some data from browser with jQuery.post. The length of the state should be 29915 characters, but currentState variable has only 21621 characters. The end of the string is lost. I checked if browser sends all data to the server and it does. So the problem somewhere on the server.

Firebug shows the request `Content-Type` header is `application/x-www-form-urlencoded; charset=UTF-8`. — Andrey M., Apr 20 '12 at 12:24
I just tested with 30K and worked fine. Does your string contains non-encoded stuff? — Aliostad, Apr 20 '12 at 12:30
No, it is a valid JSON string. If I send that data directly to the generic handler (*.ashx), it work and I can deserialize the string. — Andrey M., Apr 20 '12 at 16:15
valid JSON?! This is supposed to be `application/x-www-form-urlencoded` not JSON. do you have `field=value&field=value`? — Aliostad, Apr 20 '12 at 16:18
yes! it looks like productid=605&state=%7B%22CurVOI%22%3A-1%2C%22CurLI%22%3A-1%2C%22RgbCP%22%3Anull%2C%22CmykCP%22%3Anull%2C%22GrayscaleCP%22%3Anull%2C%22WW%22%3A318.0952%2C%22WH... long encoded string — Andrey M., Apr 20 '12 at 16:28
let us [continue this discussion in chat](http://chat.stackoverflow.com/rooms/10332/discussion-between-andrey-m-and-aliostad) — Andrey M., Apr 20 '12 at 17:11

score 0 · Accepted Answer · answered Apr 23 '12 at 10:46

0

Setting the ReadBufferSize helps:

protected void Application_Start(object sender, EventArgs e)
{
   GlobalConfiguration.Configuration.Formatters.FormUrlEncodedFormatter.ReadBufferSize = 256 * 1024; // 256 KB
}

answered Apr 23 '12 at 10:46

Andrey M.

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Post large string to Web API controller

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