How to disable SSL certificate validation?

[lmattcris]

I have a WebDAV server on a local network, to access it over TLS/SSL I have to set up a certificate with a dummy CA, which is quite annoying.
Can I disable the SSL certificate validation? (Yes I know that this way I'd be losing the trusted CA)

I've found a solution for an HttpClient here, but I'm not sure if/how to employ it with WebDavClient

[skazantsev]

Hi @lmattcris,
You can pass an instance of HttpClient when creating WebDavClient. That should do the trick.

[lmattcris]

@skazantsev That sounds fine, however, I have to admit I have no idea how to pass on the credentials that previously I entered with WebDavClientParams.Credentials ... I mean that otherwise I just filled in a WebDavClientParams object and pass it to the WebDavClient constructor, as in base examples

[lmattcris]

Oh well, I made it, no matter how dumb I am 😄
I just changed the code to this

            var httpClientHandler = new HttpClientHandler();
            httpClientHandler.ServerCertificateCustomValidationCallback = ( message, cert, chain, sslPolicyErrors ) =>
            {
                return true;
            };
            httpClientHandler.Credentials = new NetworkCredential( "user", "password" );
            HttpClient httpClient = new HttpClient( httpClientHandler ) { BaseAddress = new Uri( server ) };
            WebDavClient client = new WebDavClient( httpClient );

And that worked, even removing the dummy CA, so without a trusted CA. Great!
Still: this is a restricted use, on a local network, possibly not even connected to the internet. I understand that using it outside a controlled environment isn't a good idea!