System.Net.WebSockets.WebSocketBase.SendAsync C# (CSharp) Method

        public override Task SendAsync(ArraySegment<byte> buffer,
            WebSocketMessageType messageType,
            bool endOfMessage,
            CancellationToken cancellationToken)
        {
            if (messageType != WebSocketMessageType.Binary &&
                    messageType != WebSocketMessageType.Text)
            {
                throw new ArgumentException(SR.Format(SR.net_WebSockets_Argument_InvalidMessageType,
                    messageType,
                    nameof(SendAsync),
                    WebSocketMessageType.Binary,
                    WebSocketMessageType.Text,
                    nameof(CloseOutputAsync)),
                    nameof(messageType));
            }

            WebSocketValidate.ValidateArraySegment<byte>(buffer, nameof(buffer));

            return SendAsyncCore(buffer, messageType, endOfMessage, cancellationToken);
        }