Microsoft.WindowsAzure.MediaServices.Client.Tests.DynamicEncryption.KeyDeliveryServiceClient.AcquireWidevineLicenseWithBearerHeader C# (CSharp) Method

        public byte[] AcquireWidevineLicenseWithBearerHeader(Uri keydeliveryUri, string authToken, byte[] licenseChallenge)
        {
            var kdClient = new HttpClient();
            kdClient.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue(AuthenticationSchema, authToken);

            return _retryPolicy.ExecuteAction(() =>
            {
                HttpResponseMessage response = kdClient.PostAsync(keydeliveryUri, new ByteArrayContent(licenseChallenge)).Result;
                response.EnsureSuccessStatusCode();
                byte[] hlsContentKey = response.Content.ReadAsStreamAsync().ContinueWith(t =>
                {
                    Stream stream = t.Result;
                    var bytes = new byte[stream.Length];
                    stream.Read(bytes, 0, (int)stream.Length);
                    return bytes;
                }).Result;

                return hlsContentKey;
            });
        }

        public void GetWidevineKeyDeliveryUrlAndFetchLicenseWithPolicy()
        {
            IContentKey contentKey = null;
            IContentKeyAuthorizationPolicy contentKeyAuthorizationPolicy = null;
            IContentKeyAuthorizationPolicyOption policyOption = null;

            try
            {
                byte[] expectedKey = null;
                contentKey = CreateTestKey(_mediaContext, ContentKeyType.CommonEncryption, out expectedKey);

                var template = new WidevineMessage
                {
                    allowed_track_types = AllowedTrackTypes.SD_HD,
                    content_key_specs = new[]
                    {
                        new ContentKeySpecs
                        {
                            key_id = contentKey.Id,
                            required_output_protection = new RequiredOutputProtection { hdcp = Hdcp.HDCP_NONE},
                            security_level = 1,
                            track_type = "SD"
                        }
                    },
                    policy_overrides = new
                    {
                        can_play = true,
                        can_persist = true,
                        can_renew = true,
                        license_duration_seconds = 10,
                        renewal_delay_seconds = 3,
                    }
                };

                string configuration = JsonConvert.SerializeObject(template);

                policyOption = ContentKeyAuthorizationPolicyOptionTests.CreateOption(
                    _mediaContext,
                    String.Empty,
                    ContentKeyDeliveryType.Widevine,
                    null,
                    configuration,
                    ContentKeyRestrictionType.Open);

                List<IContentKeyAuthorizationPolicyOption> options = new List<IContentKeyAuthorizationPolicyOption>
                {
                    policyOption
                };

                contentKeyAuthorizationPolicy = CreateTestPolicy(_mediaContext, String.Empty, options, ref contentKey);

                Uri keyDeliveryServiceUri = contentKey.GetKeyDeliveryUrl(ContentKeyDeliveryType.Widevine);

                Assert.IsNotNull(keyDeliveryServiceUri);

                KeyDeliveryServiceClient keyClient = new KeyDeliveryServiceClient(RetryPolicy.DefaultFixed);
                string rawkey = EncryptionUtils.GetKeyIdAsGuid(contentKey.Id).ToString();

                string payload = "CAEShAEKTAgAEkgAAAACAAAQWPXbhtb/q43f3SfuC2VP3q0jeAECW3emQkWn2wXCYVOnvlWPDNqh8VVIB4GmsNA8eVVFigXkQWIGN0GlgMKjpUESLAoqChQIARIQJMPCzl2bViyMQEtyK/gtmRABGhAyNWY3ODMzMTcyMmJjM2EyGAEgv5iQkAUaIC3ON1zVgeV0rP7w2VmVLGorqClcMQO4BdbHPyk3GsnY";

                byte[] license = keyClient.AcquireWidevineLicenseWithBearerHeader(
                    keyDeliveryServiceUri,
                    TokenServiceClient.GetAuthTokenForKey(rawkey),
                    Convert.FromBase64String(payload));

                string expectedString = Convert.ToBase64String(license);
                Assert.AreEqual("CAIS", expectedString.Substring(0, 4));
            }
            finally
            {
                CleanupKeyAndPolicy(contentKey, contentKeyAuthorizationPolicy, policyOption);
            }
        }