System.Net.Http.WinHttpHandler.WinHttpHandler.SetRequestHandleTlsOptions C# (CSharp) Метод

        private void SetRequestHandleTlsOptions(SafeWinHttpHandle requestHandle)
        {
            // If we have a custom server certificate validation callback method then 
            // we need to have WinHTTP ignore some errors so that the callback method
            // will have a chance to be called.
            uint optionData;
            if (_serverCertificateValidationCallback != null)
            {
                optionData =
                    Interop.WinHttp.SECURITY_FLAG_IGNORE_UNKNOWN_CA |
                    Interop.WinHttp.SECURITY_FLAG_IGNORE_CERT_WRONG_USAGE |
                    Interop.WinHttp.SECURITY_FLAG_IGNORE_CERT_CN_INVALID |
                    Interop.WinHttp.SECURITY_FLAG_IGNORE_CERT_DATE_INVALID;
                SetWinHttpOption(requestHandle, Interop.WinHttp.WINHTTP_OPTION_SECURITY_FLAGS, ref optionData);
            }
            else if (_checkCertificateRevocationList)
            {
                // If no custom validation method, then we let WinHTTP do the revocation check itself.
                optionData = Interop.WinHttp.WINHTTP_ENABLE_SSL_REVOCATION;
                SetWinHttpOption(requestHandle, Interop.WinHttp.WINHTTP_OPTION_ENABLE_FEATURE, ref optionData);
            }
        }