SOAP错误：请求已中止：无法创建SSL / TLS安全通道

Question

I have created Soap service, using WSDL file. While testing on SOAP UI (XML part with passing header and client id,secret) it is giving proper response. But through service gives error

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

Can someone analise code my service look like :

    Dim Request As WebRequest
    Dim Response As WebResponse
    Dim DataStream As Stream
    Dim Reader As StreamReader
    Dim SoapByte() As Byte
    Dim pSuccess As Boolean = True
    Dim SD2Request As String

    SoapByte = System.Text.Encoding.UTF8.GetBytes(MyXMLString)

        Dim myCred As System.Net.CredentialCache = New System.Net.CredentialCache()
        Dim netCred As NetworkCredential = New NetworkCredential("testclient", "test@123")
        myCred.Add(New Uri("https://URL"), "Basic", netCred)
        Request = WebRequest.Create("https://URL")
        Request.Headers.Add("Client-ID", "ID-1234")
        Request.Headers.Add("Client-Secret", "Secret-1234")
        Request.PreAuthenticate = True
        Request.ContentType = "application/xml; charset=utf-8"
        Request.ContentLength = SoapByte.Length
        Request.Method = "POST"
        Request.Credentials = myCred
        DataStream = Request.GetRequestStream()
        DataStream.Write(SoapByte, 0, SoapByte.Length)
        DataStream.Close()
        Response = Request.GetResponse()
        DataStream = Response.GetResponseStream()
        Reader = New StreamReader(DataStream)
        SD2Request = Reader.ReadToEnd()
        DataStream.Close()
        Reader.Close()
        Response.Close()
        Return SD2Request

I have imported WSDL file as service reference.

Answer 1

.NET 4.5 hasn't enabled TLS by default. You've got to enable it manually by setting the System.Net.ServicePointManager.SecurityProtocol property :

System.Net.ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls Or SecurityProtocolType.Tls11 Or SecurityProtocolType.Tls12