DotNetBrowser

By default DotNetBrowser rejects loading HTTPS web sites with invalid SSL certificates for security reasons. If you need to ignore invalid SSL certificates and continue loading web page, you can register your LoadHandler implementation where you decide whether invalid SSL certificates should be ignored or not. For example:

private class SampleLoadHandler : DefaultLoadHandler
{
    public override bool OnCertificateError(CertificateErrorParams errorParams)
    {
        // Return false to ignore certificate error.
        return false;
    }
}

The CertificateErrorParams parameter provides information about invalid SSL certificate. You can decide whether certificate is allowed or not using its details.

Example

using DotNetBrowser;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;


namespace CertificateErrorSample
{
    /// <summary>
    /// Demonstrates how to handle SSL certificate errors.
    /// </summary>
    class Program
    {
        static void Main(string[] args)
        {
            Browser browser = BrowserFactory.Create();

            browser.LoadHandler = new SampleLoadHandler();

            browser.LoadURL("<https-url-with-invalid-ssl-certificate>");

        }

        private class SampleLoadHandler : DefaultLoadHandler
        {
            public override bool OnCertificateError(CertificateErrorParams errorParams)
            {
                Certificate certificate = errorParams.Certificate;

                Console.WriteLine("ErrorCode = " + errorParams.CertificateError);
                Console.WriteLine("SerialNumber = " + certificate.SerialNumber);
                Console.WriteLine("FingerPrint = " + certificate.FingerPrint);
                Console.WriteLine("CAFingerPrint = " + certificate.CAFingerPrint);

                string subject = certificate.Subject;
                Console.WriteLine("Subject = " + subject);

                string issuer = certificate.Issuer;
                Console.WriteLine("Issuer = " + issuer);

                Console.WriteLine("KeyUsages = " + String.Join(", ", certificate.KeyUsages));
                Console.WriteLine("ExtendedKeyUsages = " + String.Join(", ", certificate.ExtendedKeyUsages));

                Console.WriteLine("HasExpired = " + certificate.HasExpired);

                // Return false to ignore certificate error.
                return false;
            }
        }
    }
}