Question

我已在我的网络应用中设置此功能，以向Android设备发送推送通知：

Private Function SendNotification(ByVal authstring As String) As String
    Dim request As WebRequest = WebRequest.Create("https://android.apis.google.com/c2dm/send")
    request.Method = "POST"
    request.ContentType = "application/x-www-form-urlencoded"
    request.Headers.Add(String.Format("Authorization: GoogleLogin auth={0}", authstring))
    Dim postData As String = String.Format("registration_id={0}&data.payload={1}&collapse_key=0", deviceList.SelectedValue, txtPayload.Text)
    Dim byteArray As Byte() = Encoding.UTF8.GetBytes(postData)
    request.ContentLength = byteArray.Length
    Dim dataStream As Stream = request.GetRequestStream()
    dataStream.Write(byteArray, 0, byteArray.Length)
    dataStream.Close()
    Dim response As WebResponse = request.GetResponse()
    dataStream = response.GetResponseStream()
    Dim reader As New StreamReader(dataStream)
    Dim responseFromServer As String = reader.ReadToEnd()
    reader.Close()
    dataStream.Close()
    response.Close()

    Return responseFromServer
End Function

但是，每当我调用此函数时，都会收到以下错误消息：根据验证过程，远程证书无效。“

对我在这里做错了什么的想法？我也尝试在IIS上运行它，但这没有帮助。

Answer 1

好的，经过大量的浏览，我想到了这一点。我的代码中缺少这一行（应该在函数的第一行）：

ServicePointManager.ServerCertificateValidationCallback = Function(sender As _
Object, certificate As X509Certificate, chain As X509Chain, sslPolicyErrors As _
SslPolicyErrors) True

使用.NET与Android C2DM进行通信

1 个答案: