The request was missing an Authentication Key. Please, refer to section "Authentication" with IHttpClientFactory

Question

I'm trying to send an HTTP request from .NET Core 3.1 REST API to another API but below Exception keep appeared Although I'm already added the Authentication Key :

The request was missing an Authentication Key. Please, refer to section "Authentication"

here is my code :

public class AppService
    {


        private readonly IHttpClientFactory _clientFactory;
        string key = "key=llllll ......";
        string webAPIKey = "......";
        string Id = "......";

        public AppService(IHttpClientFactory clientFactory) {
            _clientFactory = clientFactory;
           
        }

public async Task<string> sendBroadCastNotification()
        {
            Data _data = new Data();
            _data.title = "test data Ttile";
            _data.detail = "test data detail";
            Notification _notification = new Notification();
            _notification.title = "test notification Ttile";
            _notification.body = "test notification body";

            MyNotification NotifcationData = new MyNotification {
            data=_data,
            notification=_notification,
            to= "/topics/all"
            };

            try {
           

            var client = _clientFactory.CreateClient();

               

            client.DefaultRequestHeaders.Add("project_id", Id );
                client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Authorization", key);


                StringContent bodyOfRequest = new StringContent(System.Text.Json.JsonSerializer.Serialize(NotifcationData ), Encoding.UTF8, "application/json");

            using var httpResponse =
          await client.PostAsync("https://.......", bodyOfRequest);

                var result = httpResponse.Content.ReadAsStringAsync().Result;

                return result;
            }
            catch (Exception ex)
            {
                throw new System.ArgumentException(ex.Message.ToString(), "original");

            }
            //return null;

        }


}

What format does the API expect the Authorization header to be in? What you currently have set is doing this: `Authorization: Authorization mykey123`. By adding the extra ctor param you are adding a scheme, which is added as a prefix. Is that what you expect? — Simon C, Aug 28 '20 at 22:17
@SimonC I wanna add Authorization: 'key=...mykey' i in the header such as PostMan request — Abdulaziz, Aug 29 '20 at 01:51

score 0 · Accepted Answer · answered Aug 29 '20 at 02:10

I found the answer here in this link:

I add the key by using the below line:

client.DefaultRequestHeaders.TryAddWithoutValidation("Authorization", key);

the below way that I was trying to add the authorization header wasn't understandable as an authorization header :

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

The request was missing an Authentication Key. Please, refer to section "Authentication" with IHttpClientFactory

1 Answers1