c# - 如何从 VB.net 或 C# 调用启用 SSL 的 soap webservice

Question

大家好，我正在尝试访问启用了 https/ssl 的 soap 网络服务。但是我收到了这个错误:

System.Net.WebException was unhandled

The request was aborted: Could not create SSL/TLS secure channel.

下面是我用来打电话的代码。

Protected Sub Button1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button1.Click
    Dim url As String = "https://10.31.171.199:8443/emc-dfs/services/core/ObjectService?WSDL"
    System.Net.ServicePointManager.ServerCertificateValidationCallback = New System.Net.Security.RemoteCertificateValidationCallback(AddressOf ValidateRemoteCertificate)
    ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls Or SecurityProtocolType.Ssl3
    Dim responsestring As String = ""
    Dim myReq As HttpWebRequest = WebRequest.Create(url)
    Dim proxy As IWebProxy = CType(myReq.Proxy, IWebProxy)
    Dim proxyaddress As String
    Dim myProxy As New WebProxy()
    Dim response As String


    myReq.AllowWriteStreamBuffering = False
    myReq.Method = "GET"
    myReq.ContentType = "application/soap+xml; charset=utf-8"
    myReq.PreAuthenticate = True
    proxyaddress = proxy.GetProxy(myReq.RequestUri).ToString

    Dim newUri As New Uri(proxyaddress)
    myProxy.Address = newUri
    Dim myResponse As HttpWebResponse = myReq.GetResponse

    Dim responsedata As Stream = myResponse.GetResponseStream
    Dim responsereader As New StreamReader(responsedata)

    response = responsereader.ReadToEnd
End Sub

我在“Dim myResponse As HttpWebResponse = myReq.GetResponse”行收到此错误。

请帮助我解决问题，以及如何调用此服务。请帮助我提供 SSL soap 服务的任何有效示例代码。

谢谢。

Answer 1

可能服务器上的 TLS 版本 不是 1.0？尝试:

ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls Or SecurityProtocolType.Ssl3 Or SecurityProtocolType.Tls11 Or SecurityProtocolType.Tls12

除此之外，查看是否设置证书验证委托(delegate)以绕过检查是否有效，即，就在调用请求方法之前: ServicePointManager.ServerCertificateValidationCallback = Function() 返回 True