public NotificationHubClient()

in src/Microsoft.Azure.NotificationHubs/NotificationHubClient.cs [60:114]
48 lines of code
7 McCabe index (conditional complexity)

        public NotificationHubClient(string connectionString, string notificationHubPath, NotificationHubSettings settings)
        {
            if (string.IsNullOrWhiteSpace(connectionString))
            {
                throw new ArgumentNullException(nameof(connectionString));
            }

            if (string.IsNullOrWhiteSpace(notificationHubPath))
            {
                throw new ArgumentNullException(nameof(notificationHubPath));
            }

            _notificationHubPath = notificationHubPath;
            _tokenProvider = SharedAccessSignatureTokenProvider.CreateSharedAccessSignatureTokenProvider(connectionString);
            var configurationManager = new KeyValueConfigurationManager(connectionString);
            _namespaceManager = NamespaceManager.CreateFromConnectionString(connectionString);
            _baseUri = GetBaseUri(configurationManager);
            settings = settings ?? new NotificationHubSettings();
            
            if (settings.HttpClient != null)
            {
                _httpClient = settings.HttpClient;
            }
            else if (settings.MessageHandler != null)
            {
                var httpClientHandler = settings.MessageHandler;
                _httpClient = new HttpClient(httpClientHandler);
            }
            else if (settings.Proxy != null)
            {
                var httpClientHandler = new HttpClientHandler();
                httpClientHandler.UseProxy = true;
                httpClientHandler.Proxy = settings.Proxy;
                _httpClient = new HttpClient(httpClientHandler);
            }
            else
            {
                _httpClient = new HttpClient();
            }

            if (settings.OperationTimeout == null)
            {
                OperationTimeout = TimeSpan.FromSeconds(60);
            }
            else
            {
                OperationTimeout = settings.OperationTimeout.Value;
            }

            _retryPolicy = settings.RetryOptions.ToRetryPolicy();

            _httpClient.Timeout = OperationTimeout;

            SetUserAgent();
        }