.net - 基础连接已关闭:无法为SSL/TLS安全 channel 建立信任关系

这是我的代码，花了我很多时间才写出来，因为我还是个小家伙：

Imports System.Net
Imports System.Text
Imports System.IO

Public Class Form1

Dim logincookie As CookieContainer

Private Sub Button1_Click(sender As System.Object, e As System.EventArgs) Handles      Button1.Click

    Dim postdata As String = "action=do_login&url=https%3A%2F%2Fforum.suprbay.org% 2F&quick_login=1&quick_username=USERNAME&quick_password=PASSWORD&submit=Login&quick_remember=yes"
    Dim tempcookies As New CookieContainer
    Dim encoding As New UTF8Encoding
    Dim bytedata As Byte() = encoding.GetBytes(postdata)
    Dim postreq As HttpWebRequest = DirectCast(WebRequest.Create("https://forum.suprbay.org/member.php"), HttpWebRequest)

    postreq.Method = "POST"
    postreq.KeepAlive = True
    postreq.CookieContainer = tempcookies
    postreq.ContentType = "application/x-www-forum-urlencoded"
    postreq.Referer = "https://forum.suprbay.org/member.php"
    postreq.UserAgent = "Mozilla/5.0 (Windows NT 6.2; rv:9.0.1) Gecko/20100101  Firefox/9.0.1"
    postreq.ContentLength = bytedata.Length

    Dim postreqstream As Stream = postreq.GetRequestStream()
    postreqstream.Write(bytedata, 0, bytedata.Length)
    postreqstream.Close()
    Dim postresponse As HttpWebResponse
    postresponse = DirectCast(postreq.GetResponse(), HttpWebResponse)

    tempcookies.Add(postresponse.Cookies)
    logincookie = tempcookies

    Dim postreqreader As New StreamReader(postresponse.GetResponseStream)
    Dim thepage As String = postreqreader.ReadToEnd

    RichTextBox1.Text = thepage

    End Sub

End Class

当我运行它并单击按钮时，出现以下错误：


  “基础连接已关闭：无法建立信任
  SSL / TLS安全通道的关系。”


这是PirateBay.Se的官方论坛，这是一个洪流网站，如果您在常规浏览器中访问它，则会收到有关信任证书的警告，所以这可能就是为什么我会收到错误消息，对吗？如何忽略信任证书和内容，以便我的应用程序可以正常工作？

最佳答案

此行应忽略连接上的信任错误，请在尝试连接之前执行此操作：

ServicePointManager.ServerCertificateValidationCallback = AddressOf ValidateRemoteCertificate

您还需要在您的班级中对此进行定义：

   Public Shared Function ValidateRemoteCertificate(ByVal sender As Object, ByVal certificate As X509Certificate, ByVal chain As X509Chain, ByVal sslPolicyErrors As SslPolicyErrors) As Boolean
        Return True
    End Function

抱歉，如果这不是对VB.Net的完美翻译，我本来是在C＃中使用的。

编辑：

是的，这正是您收到此错误的原因，即他们拥有的证书已过期。

关于.net - 基础连接已关闭:无法为SSL/TLS安全 channel 建立信任关系，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/11891529/