I wrote this simple testing function to call a site and return it's response; i use the ServerCertificateValidationCallback to try to ignore any SSL problems if they may appear.
private static void TestURL(string url)
{
try
{
//global::System.Net.ServicePointManager.UseNagleAlgorithm = false;
//global::System.Net.ServicePointManager.CheckCertificateRevocationList = false;
global::System.Net.ServicePointManager.ServerCertificateValidationCallback += (sender, certificate, chain, sslPolicyErrors) =>
{
global::System.Console.WriteLine("Certificate Callback Fired: " + (certificate == null ? "null Certificate" : certificate.ToString()));
return true;
};
global::System.Console.WriteLine("Pre Request");
global::System.Net.HttpWebRequest Request = (global::System.Net.HttpWebRequest)global::System.Net.WebRequest.Create(url);
//Request.Accept = "application/json";
//Request.ContentType = "application/json";
//Request.Method = global::System.Net.WebRequestMethods.Http.Get;
global::System.Console.WriteLine("Request Set");
try
{
global::System.Console.WriteLine("Pre Response");
using (global::System.Net.WebResponse Response = Request.GetResponse())
{
global::System.IO.Stream ResponseStream = Response.GetResponseStream();
using (global::System.IO.StreamReader Reader = new global::System.IO.StreamReader(ResponseStream, global::System.Text.Encoding.UTF8))
{
global::System.Console.WriteLine("Response Stream Says:");
global::System.Console.WriteLine(Reader.ReadToEnd());
global::System.Console.WriteLine();
}
}
global::System.Console.WriteLine("After Request");
}
catch (global::System.Net.WebException e)
{
if (e.Response != null)
{
int HCode = ((int)((global::System.Net.HttpWebResponse)e.Response).StatusCode);
global::System.Console.WriteLine("Error: Response Code " + HCode.ToString());
} else { global::System.Console.WriteLine("Error: e.Response null for: \"" + e.Message + "\""); }
} catch { global::System.Console.WriteLine("Error: Unknow"); }
} catch (global::System.Exception exOut) { global::System.Console.WriteLine("Error (out exception): " + exOut.Message); }
}
The problem that i face is that ServerCertificateValidationCallback is never called to a site with https and a certificate (as it shows by accessing it via browser) and so i get an exception on the "Request.GetResponse()" call as "The request was aborted: Could not create SSL/TLS secure channel" (or in older .Net frameworks "The underlying connection was closed: An unexpected error occurred on a send").
