How to disable all the header content from http response.

Question

1.00/5 (1 vote)

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how to disable the sending of http header data in api response.

like fallowing headers in asp.net web api 2

Cache-Control →no-cache
Connection →close
Content-Length →20
Content-Type →application/json; charset=utf-8
Date →Mon, 12 Jun 2017 10:06:04 GMT
Expires →-1
Pragma →no-cache
Server →Microsoft-IIS/8.5
X-AspNet-Version →4.0.30319

What I have tried:

i have tried adding fallowing code in global.asax

protected void Application_PreSendRequestHeaders()
       {
           Response.Headers.Remove("Server");
           Response.Headers.Remove("X-AspNet-Version");
           Response.Headers.Remove("Expires");
           Response.Headers.Remove("Cache-Control");
           Response.Headers.Remove("Connection");
           Response.Headers.Remove("Date");
           Response.Headers.Remove("Content-Type");


       }

and from iis http response header i have removed X powered by

with above procedure i am able to disable

Server

,

X-AspNet-Version

.

X powered by

headers but
I am unable to delete remaining header those are

Cache-Control →no-cache
Content-Length →7
Content-Type →application/json; charset=utf-8
Date →Sun, 25 Jun 2017 12:15:41 GMT
Expires →-1
Pragma →no-cache

.Even i Have tried with uriscan tool also.
Any help could be appreicated.

Posted 25-Jun-17 2:19am

chandubbbb

Updated 26-Jun-17 5:37am

OriginalGriff

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Richard Deeming · Answer 1 · 2017-06-26T05:37:00

Simple: You don't.

Those headers are part of the HTTP grammar. If you removed them, your response would no longer be valid.

Hypertext Transfer Protocol - Wikipedia[^]
List of HTTP header fields - Wikipedia[^]

You can change the Cache-Control, Expires and Pragma headers by setting the CacheControl[^] property on the response.

The Content-Type and Content-Length headers will be set by the response formatter. They cannot be changed or removed, since that would break the response.

The Date is set automatically, and cannot be changed or removed.