WebDAV with untrusted SSL cert from .NET :: Support Forum

semery
Joined:: 2015-02-25
Posts:: 2

WebDAV with untrusted SSL cert from .NET

2015-02-25 17:01

WinSCP version: 5.7 (https://winscp.net/download/winscp570automation.zip)

I am trying to connect to a WebDAV server with a self-signed certificate using the .Net assembly. I can connect to the same server with the WebDAV protocol on a different port (and with the WinSCP GUI) without SSL but I can't figure out the correct options to set to get SSL working.

If I don't supply the server's host certificate fingerprint, I get the error (as expected):

WinSCP.SessionRemoteException: Server certificate verification failed: certificate issued for a different hostname, issuer is not trusted ---> WinSCP.SessionRemoteException: Connection failed.

If I supply the certificate fingerprint with SessionOptions.TlsHostCertificateFingerprint, I get the error:

System.ArgumentException: SessionOptions.TlsHostCertificateFingerprint or SessionOptions.GiveUpSecurityAndAcceptAnyTlsHostCertificate is set, but SessionOptions.FtpSecure is FtpSecure.None.

So then if I set SessionOptions.FtpSecure to FtpSecure.Implicit, I get the error:

System.ArgumentException: SessionOptions.FtpSecure is not FtpSecure.None, but SessionOptions.Protocol is not Protocol.Ftp.

Is there anything else I can try?

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martin◆ Site Admin
Joined:: 2002-12-10
Posts:: 37,223
Location:: Prague, Czechia

Re: WebDAV with untrusted SSL cert from .Net

2015-02-26

Thanks for your report.

That's a bug, will fix it.

Meanwhile, you can download source code of WinSCP and modify the check in Session.SessionOptionsToOpenSwitches.

Instead of

if (sessionOptions.FtpSecure == FtpSecure.None)

use

if ((sessionOptions.FtpSecure == FtpSecure.None) && !sessionOptions.WebdavSecure)

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martin◆ Site Admin
Joined:: 2002-12-10
Posts:: 37,223
Location:: Prague, Czechia

Re: WebDAV with untrusted SSL cert from .Net

2015-02-26

This bug has been added to the tracker:
https://winscp.net/tracker/1284

I'm sending you an email with a development version of WinSCP to address you have used to register on this forum.

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semery

Re: WebDAV with untrusted SSL cert from .Net

2015-02-26 20:52

Dev version works great! Thanks!

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fvboegeld
Joined:: 2015-01-19
Posts:: 2

2015-03-12 13:05

Hello,

I'm having the same issue with SSL webdav

Can i also give this dev version a try?

Thanks!
Frederik

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martin◆ Site Admin

2015-03-16

@fvboegeld: Sent.

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fvboegeld
Joined:: 2015-01-19
Posts:: 2

2015-03-19 12:10

Thanks

Its working perfect now!

Frederik

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kyle@... Guest

Re: WebDAV with untrusted SSL cert from .Net

2016-06-24 08:56

Hi, can I have this version please.

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martin◆ Site Admin

Re: WebDAV with untrusted SSL cert from .Net

2016-06-27

@kyle: Just download the latest version, this has been fixed while ago:
https://winscp.net/tracker/1284

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Peterpan Guest

Re: WebDAV with untrusted SSL cert from .Net

2016-06-28 08:44

I can't find the latest version to download. I went to download link (https://winscp.net/eng/download.php), but that is the version modified on 6/3/2016, which is before the fixed one.
Please help.

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martin◆ Site Admin

Re: WebDAV with untrusted SSL cert from .Net

2016-06-30

@Peterpan: No idea what you mean. The bug was fixed in 5.7.1, which was released on 2015-03-25 (over a year ago). The current stable version is 5.7.7, released on 2016-03-06.

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