1 回答

• 2

  实际上找到了根本原因，为什么呼叫从 Postman 获得成功而不是从 VS WebTest 获得成功。

  原因是 Postman 足够聪明地将请求安全性更正为**(TLS/1.2)**

  而 WebTest 无法做到这一点，因为它使用较低级别的 System.Net 协议。

  现在要解决这个问题，我们实际上可以编写自定义 WebTest 插件，它可以覆盖默认的安全行为。

  using System;
  using System.ComponentModel;
  using System.Net;
  using System.Net.Security;
  using System.Security.Cryptography.X509Certificates;
  using Microsoft.VisualStudio.TestTools.WebTesting;
  
  namespace MyWebTest
  {
      [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 TLS12ForcedPlugin : 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;
          }
      }
  }
  

  回复于 2024-05-06T02:14:53+08:00