使用TCP连接时，确定SSL连接类型

我正在使用以下代码连接到主机:

protected bool OpenSocket(string hostIPAddress, int hostIPPort)
{
    try
    {
        if ((this._tcpSocket != null) && (this._tcpSocket.Connected == true))
            return (true);
    }
    catch { }
    // Reset variables
    this._isSocketOpen = false;
    this._isSSLOpen = false;
    string ipAddress = this.GetHostIPAddress(hostIPAddress);
    this._tcpSocket = new TcpClient(ipAddress, hostIPPort);
    this._tcpipConnectionStream = this._tcpSocket.GetStream();
    this._isSocketOpen = true;
    return true;
}

在连接到主机时，是否有办法确定SSL连接类型(即SSL2, SSL3, TL1.2) ?我考虑过这样使用:

SslStream sslStream = new SslStream(this._tcpSocket.GetStream(), false, new RemoteCertificateValidationCallback(ValidateServerCertificate), null);
sslStream.AuthenticateAsClient(hostIPAddress);

然而，我认为这将是设置SSL协议，不是吗，而不是获取它?

SslStream sslStream = new SslStream(this._tcpSocket.GetStream(), false, new RemoteCertificateValidationCallback(ValidateServerCertificate), null);
sslStream.AuthenticateAsClient(hostIPAddress);
Console.WriteLine(sslStream.SslProtocol);