asp.net - Visual Studio 2013 WebTest 请求失败 : An existing connection was forcibly closed by the remote host

Question

我正在尝试在我的本地计算机上运行 Visual Studio 2013 网络测试。这是我成功运行的测试(上一次大约 2 个月前)。 Web 测试的第一步是向登录页面发出 GET 请求。它看起来像这样:

获取 https://example.com/Login.aspx

当我在网络浏览器中输入此 URL 时，它成功了。此外，我可以成功地记录一个网络测试，我只需导航到此页面并登录。但是当我尝试重新运行我刚刚记录的网络测试时，我得到了对 GET 请求的响应:

Request failed: An existing connection was forcibly closed by the remote host

IIS 没有在 example.com 上记录任何内容(IIS 不记录 GET 请求)。但是，当我手动登录或记录 Web 测试时，IIS 会正确记录 GET 请求。

example.com 或我的本地主机上的事件查看器中没有记录任何消息。

非常感谢有关如何调试此问题的任何建议。

Answer 1

对我来说，问题是 TLS 握手。通过在 web 测试中添加插件解决。

认为是原始问题，对我有帮助:https://social.msdn.microsoft.com/Forums/vstudio/en-US/bc3ebf23-575d-4e54-bd6b-a1ed87fe5213/web-performance-test-is-not-working-with-tls12-enabled?forum=vstest

插件来源:

using System;
using System.ComponentModel;
using System.Net;
using System.Net.Security;
using System.Security.Cryptography.X509Certificates;
using Microsoft.VisualStudio.TestTools.WebTesting;

[Description("This plugin will force the underlying System.Net ServicePointManager to negotiate downlevel SSLv3 instead of TLS. WARNING: The servers X509 Certificate will be ignored as part of this process, so verify that you are testing the correct system.")]
public class TLSPlugin : WebTestPlugin
{
    [Description("Enable or Disable the plugin functionality")]
    [DefaultValue(true)]
    public bool Enabled { get; set; }
    public override void PreWebTest(object sender, PreWebTestEventArgs e)
    {
        base.PreWebTest(sender, e);

        //For TLS
        ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls12;

        //For SSL
        //ServicePointManager.SecurityProtocol = SecurityProtocolType.Ssl3;
        //we wire up the callback so we can override  behavior and force it to accept the cert
        ServicePointManager.ServerCertificateValidationCallback = RemoteCertificateValidationCB;

        //let them know we made changes to the service point manager
        e.WebTest.AddCommentToResult(this.ToString() + " has made the following modification-> ServicePointManager.SecurityProtocol set to use SSLv3 in WebTest Plugin.");
    }
    public static bool RemoteCertificateValidationCB(Object sender, X509Certificate certificate, X509Chain chain, SslPolicyErrors sslPolicyErrors)
    {
        //If it is really important, validate the certificate issuer here.
        //this will accept any certificate
        return true;
    }
}