public DirectLineClient()

in libraries/Client/DirectLineClient.cs [939:955]


        public DirectLineClient(Uri baseUri, ServiceClientCredentials credentials, params DelegatingHandler[] handlers) : this(handlers)
        {
            if (baseUri == null)
            {
                throw new ArgumentNullException("baseUri");
            }
            if (credentials == null)
            {
                throw new ArgumentNullException("credentials");
            }
            this.BaseUri = baseUri;
            this.Credentials = credentials;
            if (this.Credentials != null)
            {
                this.Credentials.InitializeServiceClient(this);
            }
        }