Stream example doesn't seem to work properly

Hi, I am trying to use this stream example:

{
    client.Connect();

    // Make the server echo back the input file with "cat"
    using (SshCommand command = client.CreateCommand("cat"))
    {
        Task executeTask = command.ExecuteAsync(CancellationToken.None);

        using (Stream inputStream = command.CreateInputStream())
        {
            inputStream.Write("Hello World!"u8);
        }

        await executeTask;

        Console.WriteLine(command.ExitStatus); // 0
        Console.WriteLine(command.Result); // "Hello World!"
    }
}

However, I am having issues with it. Frequently, the data doesn't reach the client. So, instead of "Hello World!" the result is empty.

I am trying to use it to write several lines of input via SSH. My client is already connected before I call this.

I tried forcing inputStream.Flush() but it doesn't work reliably and might not make any difference.

How can I fix this? Is there another approach to consider?

Start by reproducing the stream example using CreateInputStream and ExecuteAsync against an SSH server, then trace why the written data is sometimes absent from command.Result. Compare the behavior with the proposed Flush call and any alternative input approach. Done means the example reliably returns "Hello World!" and supports several input lines.