HttpWebRequest是否自动处理证书验证?

是的,HttpWebRequest会自动处理这些:

1. 验证证书中的URL是否与要发布到的URL匹配
2. 验证证书是否有效且可信
3. 验证证书是否尚未过期

你必须使用这样的代码 this 如果要禁用此功能。

不是真的。您仍然需要检查是否使用回调函数返回了sslpolicyerror。请确保对url进行如下测试 https://rootkit.com/

    void InitPhase()
{
    // Override automatic validation of SSL server certificates.
    ServicePointManager.ServerCertificateValidationCallback =
           ValidateServerCertficate;
}
private static bool ValidateServerCertficate(
        object sender,
        X509Certificate cert,
        X509Chain chain,
        SslPolicyErrors sslPolicyErrors)
{
    if (sslPolicyErrors == SslPolicyErrors.None)
    {
        // Good certificate.
        return true;
    }

    log.DebugFormat("SSL certificate error: {0}", sslPolicyErrors);

    bool certMatch = false; // Assume failure
    byte[] certHash = cert.GetCertHash();
    if (certHash.Length == apiCertHash.Length)
    {
        certMatch = true; // Now assume success.
        for (int idx = 0; idx < certHash.Length; idx++)
        {
            if (certHash[idx] != apiCertHash[idx])
            {
                certMatch = false; // No match
                break;
            }
        }
    }

    // Return true => allow unauthenticated server,
    //        false => disallow unauthenticated server.
    return certMatch;
}