AcquireToken async在到期时间之前返回相同的令牌

Question

I have registered my application with Azure AD App registration.

In my scenario i am using Azure Adal AquireTokenAsync method with client credentials which is always returning same token.

i need a new token for every user session.

for testing purpose i have created console application to test the behaviour.

string authority = String.Format(CultureInfo.InvariantCulture, 
      ConfigurationManager.AppSettings["ida:AADInstance"], 
      ConfigurationManager.AppSettings["ida:Tenant"]);

        AuthenticationContext authContext = new AuthenticationContext(authority, false);
        ClientCredential clientCredential = new ClientCredential(ConfigurationManager.AppSettings["ida:ClientId"], ConfigurationManager.AppSettings["ida:AppKey"]);
        AuthenticationResult result = null;
        int retryCount = 0;
        bool retry = false;
        retry = false;
        try
        {
            result = await authContext.AcquireTokenAsync(ConfigurationManager.AppSettings["ida:ResourceId"], clientCredential);
            result = await authContext.AcquireTokenAsync(ConfigurationManager.AppSettings["ida:ResourceId"], clientCredential);
        }
        catch (AdalException ex)
        {

        }
        finally
        {
            authContext = null;
        }

In both the calls it is returning the same token.

however for every fresh execution it is returning new token.

Answer 1

It's because inside AuthenticationContext , there is TokenCache to cache the id_token . So, if you would like to have new token every time calling AcquireTokenAsync , set TokenCache is null when creating AuthenticationContext object:

AuthenticationContext authContext = new AuthenticationContext(authority, false, null);

Please prefer the link

Answer 2

ADAL context cache keep token.If you need to get it refreshed please clear the cache using

  authContext.TokenCache.Clear();

it will clear the cache.