Set Authorization Header of HttpClient

Question

I have the following code, and I want to set the Authorization of the post request to be like this:

Authorization:key=somevalue

using (HttpClient client = new HttpClient())
{
     using (StringContent jsonContent = new StringContent(json))
     {
         jsonContent.Headers.ContentType = new MediaTypeHeaderValue("application/json");

         using (HttpResponseMessage response = await client.PostAsync("https://android.googleapis.com/gcm/send", jsonContent))
         {
            var reponseString = await response.Content.ReadAsStringAsync();
         }
     }
}

how to do this? I am really struggling and the following statement

client.DefaultRequestHeaders.Add("Authorization", "key=" + apiKey);

thrown the following exception

An exception of type 'System.FormatException' occurred in System.Net.Http.dll but was not handled in user code

Do you have first chance exceptions enabled? If so, turn them off. — Yuval Itzchakov, Aug 23 '15 at 14:40
I would myself prefer using `FormUrlEncodedContent` for this purpose, to send the keys and other stuff as if I was submitting the form. https://msdn.microsoft.com/en-us/library/system.net.http.formurlencodedcontent%28v=vs.118%29.aspx — Afzaal Ahmad Zeeshan, Aug 23 '15 at 14:46

Hakan Fıstık · Accepted Answer · 2023-04-05T10:51:15.423

25

I solved this by the following line of code.

client.DefaultRequestHeaders.Authorization =
    new AuthenticationHeaderValue("key", "=" + apiKey);

edited Apr 05 '23 at 10:51

answered Aug 23 '15 at 15:00

Hakan Fıstık

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1

Depending on how the HTTP Client is stored this may not be thread safe. The error that will occur is "An item with the same key has already been added." – P. Roe Aug 20 '18 at 14:40
doesn't it add a space between `key` and `=`? – TimTIM Wong Nov 30 '21 at 15:16
@TimTimWong I do not know, It just worked for me :) – Hakan Fıstık Dec 01 '21 at 08:32

score 2 · Answer 2 · answered May 19 '21 at 14:16

Not sure if this is still running, but basic auth key and something like a 64 hash authed key would be added to something like a REST call like:

var httpClient2 = new HttpClient();
var uri = new Uri("<someuri>");
var tokenKey = "<sometokenkey>");
var httpContent = new StringContent("<some body or serialized thing>", System.Text.Encoding.UTF8, "application/json");

httpClient2.BaseAddress = new Uri(uri);
httpClient2.DefaultRequestHeaders.Accept.Clear();
httpClient2.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
httpClient2.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Basic", tokenKey);

response = await httpClient2.PostAsync(uri, httpContent);

This solution worked great. i could even say new AuthenticationHeaderValue("Bearer", tokenKey); thanks alot! — Cees, Jul 15 '21 at 05:31

score 0 · Answer 3 · edited Aug 03 '20 at 15:18

0

I had the same problem, I solved using :

HttpWebRequest request = (HttpWebRequest)WebRequest.Create(endPoint);

request.Headers["Authorization"] = "Basic jMxMTgwMWUzYWFkYTk4NjM2MjcyOTk3MDowYTU0N2I2NzliNWRkMjliN2I4NTFlMDBkY2Y2NjQzNzQ5OTIxYzZl";

where the string after Basic is an encoded string from Postman, the option is 'code'.

I hope this helps!

edited Aug 03 '20 at 15:18

Harshit

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answered Aug 03 '20 at 14:16

TexWebDev

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I do not think this is the same problem, because you are using `HttpWebRequest` and I am using `HttpClient` – Hakan Fıstık Aug 03 '20 at 17:46

Set Authorization Header of HttpClient

3 Answers3

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