public async Task <DateTimeOffset> GetDate()
{
using var client = new TcpClient();
client.Connect(Ip, Port);
var connection = new ClientConnection(client);
await WriteHeader(connection);
await WriteCommandCode(connection, CommandCodeEn.GetDate);
await WriteGuid(connection);
await WriteDataLength(connection, 0);
var caption = await connection.ReadStringAsync(CancellationToken);
var unixDate = await connection.ReadInt64Async(CancellationToken);
var date = DateTimeOffset.FromUnixTimeSeconds(unixDate);
Console.WriteLine($"<- {caption}{date}");
return(date);
}