Lawo.IO.TelnetStream.ReadAsync C# (CSharp) Method

        public sealed override async Task<int> ReadAsync(
            byte[] buffer, int offset, int count, CancellationToken cancellationToken)
        {
            var readBuffer = this.ReadBuffer;
            var index = offset;
            var pastEnd = offset + count;

            // (index == offset) ensures that we only try to get more encoded data if we haven't yet copied anything
            // into buffer
            while ((index < pastEnd) && ((readBuffer.Index < readBuffer.Count) ||
                ((index == offset) && await readBuffer.ReadAsync(cancellationToken))))
            {
                var response = this.ReadByte(readBuffer, buffer, ref index);

                if (response != null)
                {
                    // TODO: The following is dangerous as another WriteAsync call could still be pending. It's probably
                    // best to use something like TaskQueue internally.
                    await this.WriteBuffer.WriteAsync(response, 0, response.Length, cancellationToken);
                    await this.WriteBuffer.FlushAsync(cancellationToken);
                }
            }

            return index - offset;
        }