SFTP DownloadFile hangs indefinitely when attempting to download moderate sized files

Hello,

I've been using SSH.NET for the past month for SFTP downloads and have been encountering an issue that I do not know how to work around. When calling the SftpClient DownloadFile method while attempting to download a file over about 100 KB the program will hang indefinitely even if the connection is forcibly closed by the remote host. This issue occurs inconsistently as sometimes I am able to download files without problem. After testing I have found this issue occurs with both the latest release available through NuGet and the 2020.0.0-beta1 release.

The code I am using to download files is listed below

foreach (string file in fileList)
{
    string filenameNoPath = file.Substring(file.LastIndexOf('/') + 1);
    string destination = outputPath + "\\" + filenameNoPath;
    using (Stream fileStream = File.OpenWrite(destination))
    {
        client.DownloadFile(file, fileStream);
        fileStream.Close();
    }
}

The platform I am using to test is Core SFTP Server (x64) installed on a Windows 10 Home machine. The connection between the testing platform and the client is my home LAN.

Beginne mit SftpClient.DownloadFile und reproduziere den Hänger mit der Schleife aus dem Issue, einer Datei mit mehr als etwa 100 KB und Core SFTP Server (x64) unter Windows 10. Prüfe das Verhalten, wenn der Remote-Host die Verbindung schließt, und vergleiche es mit erfolgreichen kleineren oder intermittierenden Downloads. Als erledigt gilt die Aufgabe, wenn der gemeldete Download unter diesen Bedingungen nicht mehr unbegrenzt hängt.