What is the difference between SftpClient.UploadFile and SftpClient.WriteAllBytes?

Question

I am observing some strange behavior when I use SSH.NET to transfer files using SFTP. I use SFTP to transfer XML files to another service (which I do not control) for processing. If I use SftpClient.WriteAllBytes, the service complains that the file is not valid XML. If I write to a temporary file first and then use it SftpClient.UploadFile, the transfer will succeed.

What's happening?

Usage .WriteAllBytes:

public void Send(string remoteFilePath, byte[] contents)
{
    using(var client = new SftpClient(new ConnectionInfo(/* username password etc.*/)))
    {
        client.Connect();
        client.WriteAllBytes(remoteFilePath, contents);
    }
}

Usage .UploadFile:

public void Send(string remoteFilePath, byte[] contents)
{
    var tempFileName = Path.GetTempFileName();
    File.WriteAllBytes(tempFileName, contents);
    using(var fs = new FileStream(tempFile, FileMode.Open))
    using(var client = new SftpClient(new ConnectionInfo(/* username password etc.*/)))
    {
        client.Connect();
        client.UploadFile(fs, targetPath);
    }
}

Edit: Will the comments ask how to turn XML into a byte array. I did not think this was relevant, but again I am the one who asks the question ...: P

// somewhere else:
// XDocument xdoc = CreateXDoc();

using(var st = new MemoryStream())
{
    using(var xw = XmlWriter.Create(st, new XmlWriterSettings { Encoding = Encoding.UTF8, Indent = true }))
    {
        xdoc.WriteTo(xw);
    }
    return st.ToArray();
}

Answer 1

, SSH.NET 2016.0.0 NuGet. 2016.1.0-1.

, , SftpFileStream (, WriteAllBytes) () .

, :
https://github.com/sshnet/SSH.NET/issues/70

, , , , , :
SftpFileStream.Write(byte [] buffer, int offset, int count), . ​​ № 70.

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: .

, SftpClient.UploadFile , SftpClient.WriteAllBytes - . , .

SftpClient.WriteAllBytes . , , .