public RtspClientInternal(ConnectionParameters connectionParameters, Func <IRtspTransportClient> transportClientProvider = null) { _connectionParameters = connectionParameters ?? throw new ArgumentNullException(nameof(connectionParameters)); _transportClientProvider = transportClientProvider ?? CreateTransportClient; Uri fixedRtspUri = connectionParameters.GetFixedRtspUri(); _requestMessageFactory = new RtspRequestMessageFactory(fixedRtspUri, connectionParameters.UserAgent); }