使用https访问受SSL保护的服务器？

Question

我是客户端开发人员（Unity / C＃），并且我具有在连接时需要SSL证书的API。我有此证书（.pfx）。 当我尝试通过HttpWebRequest类发出请求（下面的代码侦听）时，出现错误（代码400：错误的请求，未发送所需的SSL证书）。知道如何使它起作用吗？

当我将URL放在浏览器中时，我会弹出一个窗口，要求您提供证书，我可以在那里提供证书，然后得到结果！

也许我需要使用来自请求的流？

以下是请求在Inspector中的外观：

void Connect() {
    // I think it is not necessary
    ServicePointManager.ServerCertificateValidationCallback = new System.Net.Security.RemoteCertificateValidationCallback(ValidateServerCertificate);

    // certificate creation
    certificate = new X509Certificate2(path, pass); 

    HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);

    // adding certificate to request
    request.ClientCertificates.Add(certificate);
    request.Method = "GET";
    request.AuthenticationLevel = AuthenticationLevel.MutualAuthRequested;
    request.Accept = "application/json";

    HttpWebResponse response = (HttpWebResponse)request.GetResponse();
}

public static bool ValidateServerCertificate(
        object sender,
        System.Security.Cryptography.X509Certificates.X509Certificate certificate,
        X509Chain chain,
        System.Net.Security.SslPolicyErrors sslPolicyErrors)
{
    return true;
}