ln.protocols.helper/StreamExtensions.cs

using System.IO;
using System.Runtime.InteropServices;
using System.Text;

namespace ln.protocols.helper
{
    public static class StreamExtensions
    {
        public static string ReadLine(this Stream stream) => ReadLine(stream, Encoding.UTF8);
        public static string ReadLine(this Stream stream, Encoding encoding)
        {
            if (!stream.CanRead)
                return null;

            byte[] line = new byte[1024];
            int n = 0;
            int ch;
            while ((ch = stream.ReadByte()) != -1)
            {
                switch (ch)
                {
                    case '\r':
                        break;
                    case '\n':
                        return encoding.GetString(line, 0, n);
                    default:
                        line[n++] = (byte)ch;
                        break;
                }
            }
            if (n > 0)
                return encoding.GetString(line, 0, n);
            return null;
        }

        public static TextReader TextReader(this Stream stream) => new StreamReader(stream);

    }
}