Hi Dean, No, that did not make a difference. I think I am OK with getting authenticated in the server. It's the file access part that is not OK.
Thanks anyway for your time. Regards, Eddie -----Original Message----- From: Discussion of advanced .NET topics. [mailto:[EMAIL PROTECTED] Behalf Of Dean Cleaver Sent: Tuesday, July 10, 2007 2:14 PM To: ADVANCED-DOTNET@DISCUSS.DEVELOP.COM Subject: Re: [ADVANCED-DOTNET] Accessing files over HTTPS -> for Peter Ritchie Ok - that is a client certificate for sure. I've got code that issues an HTTPS post to a remote server using client certificates, but nothing that retrieves a file from the remote server using client certificates - only using server certificates. With your original code posted earlier today, add this just after creating your HttpWebRequest: ServicePointManager.ServerCertificateValidationCallback = this.ValidateServerCertificate; And then add this code: public bool ValidateServerCertificate( object sender, X509Certificate certificate, X509Chain chain, SslPolicyErrors sslPolicyErrors) { if (sslPolicyErrors == SslPolicyErrors.None) return true; // Do not allow this client to communicate with unauthenticated servers. return false; } See if that helps. Dino -----Original Message----- From: Discussion of advanced .NET topics. [mailto:[EMAIL PROTECTED] On Behalf Of Eddie Lascu Sent: Wednesday, 11 July 2007 06:03 To: ADVANCED-DOTNET@DISCUSS.DEVELOP.COM Subject: Re: [ADVANCED-DOTNET] Accessing files over HTTPS -> for Peter Ritchie Yes, it does and I have to select the certificate they gave me and I installed on my client machine. If I select something else or do not select anything at all will not connect to the remote server. -----Original Message----- From: Discussion of advanced .NET topics. [mailto:[EMAIL PROTECTED] Behalf Of Dean Cleaver Sent: Tuesday, July 10, 2007 1:39 PM To: ADVANCED-DOTNET@DISCUSS.DEVELOP.COM Subject: Re: [ADVANCED-DOTNET] Accessing files over HTTPS -> for Peter Ritchie Eddie, If you try to retrieve the file in your browser, does it ask you to pick a client certificate from a list? I know in the other situation I have where I access a remote server with a client certificate, that's exactly what happens via IE7. Dino -----Original Message----- From: Discussion of advanced .NET topics. [mailto:[EMAIL PROTECTED] On Behalf Of Eddie Lascu Sent: Wednesday, 11 July 2007 04:55 To: ADVANCED-DOTNET@DISCUSS.DEVELOP.COM Subject: Re: [ADVANCED-DOTNET] Accessing files over HTTPS -> for Peter Ritchie Hello Dean, I just entered this fascinating world and I am completely inexperienced. I really don't know what is the difference between a server certificate and a client certificate. Given that I had to install the digital certificate on my client machine (although the certificate was provided by the company that hosts the server I am trying to access) my guess is that it is a client certificate. In my case I am trying to implement an automated process, w/o human intervention. There should be no login step and I believe that is why I was presented with the digital certificate I had to install. Thanks, Eddie -----Original Message----- From: Discussion of advanced .NET topics. [mailto:[EMAIL PROTECTED] Behalf Of Dean Cleaver Sent: Tuesday, July 10, 2007 12:36 PM To: ADVANCED-DOTNET@DISCUSS.DEVELOP.COM Subject: Re: [ADVANCED-DOTNET] Accessing files over HTTPS -> for Peter Ritchie Eddie, Can you clarify - are you using a server certificate (standard https) or are you using a client certificate? The code below appears as if you're using a client certificate. I retrieve files over HTTPS with just a server certificate like this: public static bool Retrieve(string url, string userName, string password, string fileName) { WebClient client = new WebClient(); client.Credentials = new NetworkCredential(userName, password); ServicePointManager.ServerCertificateValidationCallback = ValidateServerCertificate; try { client.DownloadFile(url, fileName); return true; } catch { return false; } } public static bool ValidateServerCertificate( object sender, X509Certificate certificate, X509Chain chain, System.Net.Security.SslPolicyErrors sslPolicyErrors) { if (sslPolicyErrors == System.Net.Security.SslPolicyErrors.None) return true; Console.WriteLine("Certificate error: {0}", sslPolicyErrors); // Do not allow this client to communicate with unauthenticated servers. return false; } In my case, I have to log into the remote server as well, hence the username, password and the NetworkCredential - you can remove those if the remote server is not protected. Cheers, Dino =================================== This list is hosted by DevelopMentor(r) http://www.develop.com View archives and manage your subscription(s) at http://discuss.develop.com =================================== This list is hosted by DevelopMentor. http://www.develop.com View archives and manage your subscription(s) at http://discuss.develop.com =================================== This list is hosted by DevelopMentor(r) http://www.develop.com View archives and manage your subscription(s) at http://discuss.develop.com =================================== This list is hosted by DevelopMentor. http://www.develop.com View archives and manage your subscription(s) at http://discuss.develop.com =================================== This list is hosted by DevelopMentor® http://www.develop.com View archives and manage your subscription(s) at http://discuss.develop.com
