WebRequest 上不允許使用錯誤 405 方法

Question

我正在嘗試從下面的頁面中獲取頁面代碼。 它給了我一個 405 錯誤。 如果我嘗試從主頁獲取頁面代碼，它可以正常工作，但從這個特定頁面我得到 Method not allowed，想法？

        WebRequest request = WebRequest.Create("https://www.realtor.com/realestateandhomes-search/California/counties");
        request.UseDefaultCredentials = true;
        request.Credentials = CredentialCache.DefaultCredentials;
        HttpWebResponse response = (HttpWebResponse)request.GetResponse();
        Stream dataStream = response.GetResponseStream();
        StreamReader reader = new StreamReader(dataStream);
        string responseFromServer = reader.ReadToEnd();

        Console.WriteLine(responseFromServer);

Answer 1

該網站認為您是機器人。

細節：

我用HttpClient嘗試過（推薦：在收到非 200 響應代碼時不拋出異常），並檢查了響應 HTML。 這是重要的片段：

      <p>
        As you were browsing, something about your browser made us think you might be a bot. There are a few reasons this might happen, including:
      </p>
      <ul>
        <li>You're a power user moving through this website with super-human speed</li>
        <li>You've disabled JavaScript and/or cookies in your web browser</li>
        <li>A third-party browser plugin is preventing JavaScript from running. Additional information is available in this
          <a title='Third party browser plugins that block javascript' href='http://ds.tl/help-third-party-plugins' target='_blank'>
            support article
          </a>.
        </li>
      </ul>

如果您想要完整的響應，請嘗試運行以下命令：

async void LogResponse()
{
    using System.Net.Http.HttpClient client = new System.Net.Http.HttpClient();
    var response = await client.GetAsync("https://www.realtor.com/realestateandhomes-search/California/counties");
    Console.WriteLine(await response.Content.ReadAsStringAsync());
}

對 realtor.com, 405的側面投訴（不允許在請求行中指定的方法）是一個相當糟糕的響應代碼； 一個403 （服務器理解請求，但拒絕滿足它。 ）似乎更適合。