CODEWITHSUNDEEP
c#-4.0asp.net-mvc-5asp.net-web-api2
Crudler
Crudler

Reputation: 2286

Web Api max parameter length

I have a very simple dto

public class RisRequest
{
    public string APIKey { get; set; }
    public string Message { get; set; }
}

And a nice easy web api

[HttpPost]
    public HttpResponseMessage rad(RisRequest request)

99% of the time this works. but when I hit a request where the Message is longer than the norm (>100,000 characters, and 112kb) then this parameter is null. note the APIKey is still good, my RisRequest object isn't null, but only th eMessage parameter.

I did some googling and tried a bunch of options

as per This link I tried setting the httpconfig buffer

config.Formatters.FormUrlEncodedFormatter.ReadBufferSize = int.MaxValue/10;

I tried the web.config options in this link

<system.webServer>
  <security>
   <requestFiltering>
    <requestLimits maxAllowedContentLength="2147483648" />
   </requestFiltering>
  </security>
</system.webServer>

and

<system.web>
  <httpRuntime maxRequestLength="2097152" />
</system.web>

and no luck with either. all other some suggest a variation of the same. Any ideas where I am going wrong?

Thank

Upvotes: 2

Views: 6460

Answers (1)

esiprogrammer
esiprogrammer

Reputation: 1438

According to Max Parameter length in MVC

this is a windows restriction. in your url, the parameter is part of the path. windows restricts a path segments length.

you should change UrlSegmentMaxLength in regedit.

create a DWORD value in the following registery key

HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\HTTP\Parameters

UrlSegmentMaxCount

Maximum number of URL path segments. If zero, the count bounded by the maximum value of a ULONG.

Valid value range 0 - 16,383

Upvotes: 1

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