Have a issue with Azure Auth. Getting 401 Unauthorized when calling WebAPI Hosted in Azure.
Here's the basics: Followed this tutorial - https://azure.microsoft.com/en-us/documentation/samples/active-directory-dotnet-daemon/
Registered 2 Applications:
- Windows Service
- WebAPI
The Windows Service calls STS and Succesfully gets a JWT. It then tries to pass that token to the WebAPI hosted on azurewebsites.net.
Here is my code to call the STS (Just wrapped in a Auth Class):
public class AzureAuth
{
private AuthenticationContext authContext;
private ClientCredential clientCredential;
protected string AzureADInstanceName;
protected string AzureADTenancyName;
protected string AzureADApplicationClientId;
protected string AzureADApplicationSecret;
protected string AzureADApplicationAppId;
public AzureAuth(string azureADInstanceName, string azureADTenancyName, string azureADApplicationClientId, string azureADApplicationSecret, string azureADApplicationAppId)
{
this.AzureADInstanceName = azureADInstanceName;
this.AzureADTenancyName = azureADTenancyName;
this.AzureADApplicationClientId = azureADApplicationClientId;
this.AzureADApplicationSecret = azureADApplicationSecret;
this.AzureADApplicationAppId = azureADApplicationAppId;
string authority = string.Format(CultureInfo.InvariantCulture, AzureADInstanceName, AzureADTenancyName);
this.authContext = new AuthenticationContext(authority);
this.clientCredential = new ClientCredential(AzureADApplicationClientId, AzureADApplicationSecret);
}
public async Task ExecuteGetWithAADAutToken<T>(Action<AuthenticationResult> AfterAuthAction)
{
AuthenticationResult result = null;
try
{
result = await authContext.AcquireTokenAsync(this.AzureADApplicationAppId, this.clientCredential);
AfterAuthAction(result);
}
catch (Exception ex)
{
throw;
}
}
}
I'm then using that Auth class and the AuthResult to call the WebApi:
using (var client = new HttpClient())
{
client.BaseAddress = new Uri(getEndPointUri);
client.DefaultRequestHeaders.Accept.Clear();
client.DefaultRequestHeaders.Accept.Add(new System.Net.Http.Headers.MediaTypeWithQualityHeaderValue("application/json"));
client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", res.AccessToken);
HttpResponseMessage response = await client.GetAsync("/api/field");
if (response.IsSuccessStatusCode)
{
var resultStringJSON = await response.Content.ReadAsStringAsync();
Console.WriteLine(resultStringJSON);
}
else
{
var resulterrorStringJSON = await response.Content.ReadAsStringAsync();
Console.WriteLine(resulterrorStringJSON);
}
}
The HttpResponseMessage response is giving Unauthorised
I used fiddler to get the Request and Response:
GET https://xxxxxxxx.azurewebsites.net/api/someapi HTTP/1.1
Accept: application/json
Authorization: Bearer XXXXXXXXX
Host: xxxxxx.azurewebsites.net
HTTP/1.1 401 Unauthorized
Content-Length: 0
Server: Microsoft-IIS/8.0
WWW-Authenticate: Bearer realm="xxxxxxx.azurewebsites.net"
X-Powered-By: ASP.NET
Set-Cookie: ARRAffinity=697493f3974009aeb448f562d1b389f79aa6008071be1244c77f3f1d3849f5f0;Path=/;Domain=xxxxxxxx.azurewebsites.net
Date: Tue, 24 May 2016 03:59:15 GMT
Help please?
The main problem I suspect is that in Azure, the AAD Application does not have access to the Web API App. I tried to add it via Users but when I search that Application as user it can't find it. The Registered applications are in a different Azure AD Directory.
