[QUERY] How to get bearer token from Fluent SDK?

[formulahendry]

I want use C# SDK to do below steps:

1. Use SdkContext.AzureCredentialsFactory.FromDevice to login, then I could get a AzureCredentials.
2. Use AzureCredentials to create Resource Group and Azure IoT Central Service
3. I want to get a bearer token with the C# SDK
4. I could use bearer token to call Rest API of Azure IoT Central Service

So my question is how to get bearer token from Fluent SDK? Thanks!

[qub1n]

You don't need a bearer. Just use credentials you received.

var client = RestClient
.Configure()
.WithEnvironment(env)
.WithCredentials(credentials)
.Build();

var request = new HttpRequestMessage(HttpMethod.Get, url);
await client.Credentials.ProcessHttpRequestAsync(request, cancellationToken);
var httpClient= new HttpClient();
var response = await httpClient.SendAsync(request, HttpCompletionOption.ResponseHeadersRead, cancellationToken);

[yaohaizh]

The AzureCredentials is not suppose to expose bearer token. If you need bearer token, see some examples: https://github.com/Azure/azure-libraries-for-net/blob/33261548d00322cd7795c1eaac9ca7298c94671b/src/ResourceManagement/ResourceManager/Authentication/MSITokenProvider.cs

[yaohaizh]

Close the issue as the required feature is not on the roadmap. You can directly get token calling the REST URL with the authenticated pipeline. Thanks.

[daviddowning]

Thank you for your response. I was able to get the Azure REST APIs working using the following code:

    private static string TestAuth()
    {
        // AzureCredentials credentials = new AzureCredentials(spLogin, TenantID, AzureEnvironment.AzureGlobalCloud);
        var credentials = SdkContext.AzureCredentialsFactory.FromServicePrincipal(
            ClientID,
            ClientSecret,
            TenantID,
            AzureEnvironment.AzureGlobalCloud);

        var client = RestClient
            .Configure()
            .WithEnvironment(AzureEnvironment.AzureGlobalCloud)
            .WithCredentials(credentials)
            .Build();

        CancellationToken cancellationToken = new CancellationToken();

        var request = new HttpRequestMessage(HttpMethod.Get, $"https://management.azure.com/subscriptions/{SubscriptionID}/resourcegroups/{ResourceGroupName}?api-version=2019-10-01");
        client.Credentials.ProcessHttpRequestAsync(request, cancellationToken).GetAwaiter().GetResult();
        var httpClient = new HttpClient();
        var response = httpClient.SendAsync(request, HttpCompletionOption.ResponseHeadersRead, cancellationToken).GetAwaiter().GetResult();

        return response.Content.ReadAsStringAsync().GetAwaiter().GetResult();
    }