Code: 522 Message: SSL connection failed; session reuse required: see require_ssl_reuse option in vsftpd.conf man page
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I'm doing some PowerShell testing with Transferetto against 2 public FTPS sites:
- test.rebex.net
- ftp.dlptest.com ( https://dlptest.com/ftp-test/ )
Cmdlets I use:
$Client = Connect-FTP -Server $Server -Port $Port -Credential $PSCredential -AutoConnect -ValidateAnyCertificate -ErrorAction Stop
$Files = Get-FTPList -Client $Client -Path $SourceFolder -ErrorAction Stop
With both sites the Connect-FTP is succesful (IsConnected : True, SslProtocolActive : Tls12). Rebex also returns a file list.
But Get-FTPList returns an error for dlptest:
WARNING: Get-FTPList - Error: Exception calling "GetListing" with "1" argument(s): "Code: 522 Message: SSL connection failed; session reuse required: see require_ssl_reuse option in vsftpd.conf man page"
I found the page: robinrodricks/FluentFTP#1283 which says:
Thank you so much, this worked. I installed the FluentFTP.GnuTLS package and just added this.
client.Config.CustomStream = typeof(GnuTlsStream);
Now, FluentFTP.GnuTLS.dll is included with Transferetto. So, why does this error occur? Does this imply that all sites using the default YES for require_ssl_reuse ( https://linux.die.net/man/5/vsftpd.conf ) can't be fully handled with Transferetto? Assuming rebex uses NO and dlptest uses default YES (but I don't know how to check this).
I also found the page https://github.com/robinrodricks/FluentFTP/wiki/FTPS-Connection-using-GnuTLS where GnuTLS is mentioned in combination with TLS 1.3. If the public sites don't have TLS 1.3, could that be an explanation for the error?
Maybe that's misconfiguration on my part as I am not doing client.Config.CustomStream = xxx so maybe it needs further changes