Autodesk APS Webhook未触发回调（未收到GET验证请求）

我正尝试在.NET MVC 4应用中为Autodesk APS（Forge）的Model Derivative服务注册extraction.finished事件的Webhook。

Webhook 注册详情 #

通过以下接口注册Webhook：

POST https://developer.api.autodesk.com/webhooks/v1/systems/derivative/events/extraction.finished/hooks

请求体：

{
  "callbackUrl": "<<CALLBACK_URL>>",
  "scope": {
    "workflow": "modelderivative"
  }
}

API返回201 Created，且我能在Hooks GET接口中看到该Webhook，但我的回调端点从未收到任何Webhook请求。

回调URL验证正常 #

当我访问：

<<CALLBACK_URL>>?challenge=123

我的MVC控制器能收到请求并正确返回123。控制器代码如下：

public ActionResult Callback()
{
    if (Request.HttpMethod == "GET")
    {
        var challenge = Request.QueryString["challenge"];
        return Content(challenge);
    }

    Request.InputStream.Position = 0;
    using (var reader = new StreamReader(Request.InputStream))
    {
        var body = reader.ReadToEnd();
        // log body
    }

    return new HttpStatusCodeResult(200);
}

通过浏览器调用URL时调试器能触发，但Autodesk从未触发GET验证请求或POST事件。

Model Derivative 翻译任务配置 #

我通过以下接口启动翻译：

POST https://developer.api.autodesk.com/modelderivative/v2/designdata/job

请求体：

{
  "input": {
    "urn": "<<URN>>"
  },
  "output": {
    "formats": [
      {
        "type": "svf2",
        "views": [ "2d", "3d" ]
      }
    ],
    "misc": {
      "workflow": "modelderivative"
    }
  }
}

翻译已成功（通过manifest接口验证），但回调URL从未收到Webhook。

Webhooks.site 测试结果 #

为排除服务器问题，我使用Webhooks.site作为回调URL测试Webhook。Webhook注册成功，Hooks GET接口返回如下响应：

{
  "hookId": "e5ff0f73-f872-412a-a848-e87fa22d3a69",
  "tenant": "modelderivative",
  "callbackUrl": "https://webhook.site/c59d45c1-33fc-44c3-9e7a-1c26d81c4ac5",
  "createdBy": "mZzo7NG1GlK1cLzUn3eidvJESmllLbLn",
  "event": "extraction.finished",
  "createdDate": "2025-12-11T04:18:24.361+00:00",
  "lastUpdatedDate": "2025-12-11T04:18:24.361+00:00",
  "system": "derivative",
  "creatorType": "Application",
  "status": "active",
  "scope": {
    "workflow": "modelderivative"
  },
  "autoReactivateHook": false,
  "urn": "urn:adsk.webhooks:events.hook:e5ff0f73-f872-412a-a848-e87fa22d3a69",
  "callbackWithEventPayloadOnly": false,
  "__self__": "/systems/derivative/events/extraction.finished/hooks/e5ff0f73-f872-412a-a848-e87fa22d3a69"
}

但即使使用Webhooks.site，翻译完成后也未收到Webhook POST请求。

内容的提问来源于stack exchange，提问作者Shine Mathew