HTTPWebRequest 中的 VB.NET Cookie

Question

好的，我已经查看了堆栈溢出问题，但我没有找到任何可以 100% 回答我遇到的问题的内容。我目前正在为一个名为 e926.net 的网站进行自动登录，我他们处理登录的方式有问题。

更新问题：(https://stackoverflow.com/questions/26200801/httpwebrequest-cookies-and-authorization-tokens) 注意：关于这个问题仍有重要信息。

现在我正在使用这个代码：

Sub Client()
    Dim webRequest As HttpWebRequest
    Dim responseReader As StreamReader
    Dim responseData As String
    Dim postData As String = "authenticity_token=ubL5PfTzyrvhB%2Bb1A2MISb2IUZxsEadmZWc0z7Gs2qA%3D&url=&user%5Bname%5D=USERNAME&user%5Bpassword%5D=PASSWORD&user%5Broaming%5D=0"
    Dim cookies As CookieContainer = New CookieContainer()
    Dim requestWriter As StreamWriter
    Dim strUrl As String = Nothing
    Dim strRequestedHTML As String

    Try
        'get login  page with cookies
        strUrl = "https://e926.net/user/login"
        webRequest = HttpWebRequest.Create(strUrl)
        webRequest.AllowAutoRedirect = True
        webRequest.CookieContainer = cookies

        'recieve non-authenticated cookie
        webRequest.GetResponse().Close()

        'post form  data to page
        strUrl = "https://e926.net/user/authenticate"
        webRequest = HttpWebRequest.Create(strUrl)
        webRequest.AllowAutoRedirect = True
        webRequest.Method = WebRequestMethods.Http.Post
        webRequest.ContentType = "application/x-www-form-urlencoded"
        'webRequest.CookieContainer = cookies
        webRequest.ContentLength = postData.Length

        requestWriter = New StreamWriter(webRequest.GetRequestStream)
        requestWriter.Write(postData)
        requestWriter.Close()

        'recieve authenticated cookie
        webRequest.GetResponse().Close()

        'now we get the authenticated page
        webRequest = HttpWebRequest.Create("https://e926.net/post")
        webRequest.CookieContainer = cookies
        responseReader = New StreamReader(webRequest.GetResponse.GetResponseStream())
        responseData = responseReader.ReadToEnd()
        responseReader.Close()
        strRequestedHTML = responseData
        My.Computer.Clipboard.SetText(strRequestedHTML)

    Catch ex As Exception
        MsgBox("<br />There was an error  going to this site: " + strUrl + "<br> Error: " + ex.Message)
        Return
    End Try
End Sub

该代码是从另一个站点找到并修改的，不幸的是我忘记了链接，但它在我尝试过的前 5 个站点上运行良好。但是由于 E926 通过从“登录”页面获取详细信息来工作然后重定向到“身份验证”页面，似乎程序没有正确传输 cookie 以允许传输来自“登录”的信息。我一直在查看“提琴手 2”，以了解“cookie”和实际发送到页面的信息看起来像什么，而且很明显 cookie 丢失了。我仔细检查了“身份验证令牌”，据我所见，它似乎从未改变，但它是在“登录”页面上以隐藏形式提供的。

所以我的问题是，我如何传输 cookie 以使登录过程正常进行，这是我的问题还是其他原因导致了问题？

编辑： 来自 IE 的标头：https://docs.google.com/document/d/1UPf2vzPF11Q-i_3xSkZmdN1dfqFZX4ydyAZhVeQlh94/edit?usp=sharing

程序/该代码的标题：https://docs.google.com/document/d/1ltZo3JZLt4sZiwZBltfqqParb3H86qi62I0KZN5t_VE/edit?usp=sharing

Answer 1

您需要取消注释webRequest.CookieContainer = cookies，以便您真正从登录请求发送和接收cookie。