【发布时间】:2017-03-15 17:59:40
【问题描述】:
我有一个旧版 Visual Studio 2010 vb.net 应用程序,我需要更新 SSL TLS 通道以支持 TLS 1.2。我尝试了几个不同的选项(请参阅注释代码以进行尝试)并且都导致我遇到相同的错误,“无法创建 SSL/TLS 安全通道”。我错过了什么?
Public Shared Function processCCRequest(ByVal strRequest As String) As String
'declare the web request object and set its path to the PayTrace API
Dim ThisRequest As WebRequest = WebRequest.Create("https://beta.paytrace.com/api/default.pay")
'configure web request object attributes
ThisRequest.ContentType = "application/x-www-form-urlencoded"
ThisRequest.Method = "POST"
'encode the request
Dim Encoder As New System.Text.ASCIIEncoding
Dim BytesToSend As Byte() = Encoder.GetBytes(strRequest)
'declare the text stream and send the request to PayTrace's API
Dim StreamToSend As Stream = ThisRequest.GetRequestStream
StreamToSend.Write(BytesToSend, 0, BytesToSend.Length)
StreamToSend.Close()
''ServicePointManager.SecurityProtocol = (SecurityProtocolType)3072;
''allows for validation of SSL conversations
''ServicePointManager.ServerCertificateValidationCallback = New System.Net.Security.RemoteCertificateValidationCallback(AddressOf)
ServicePointManager.Expect100Continue = True
ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls
System.Net.ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls
''| SecurityProtocolType.Tls11 | SecurityProtocolType.Tls
''var(response = WebRequest.Create("https://www.howsmyssl.com/").GetResponse())
''var(body = New StreamReader(response.GetResponseStream()).ReadToEnd())
'Catch the response from the webrequest object
Dim TheirResponse As HttpWebResponse = ThisRequest.GetResponse
Dim sr As New StreamReader(TheirResponse.GetResponseStream)
Dim strResponse As String = sr.ReadToEnd
'Out put the string to a message box - application should parse the request instead
' MsgBox(strResponse)
sr.Close()
Return strResponse
End Function
提前感谢您的建议!
【问题讨论】:
-
我认为 .NET 4.5 中添加了 TLS 1.2 支持,因此您需要安装它,然后使用
ServicePointManager.SecurityProtocol = DirectCast(3072, SecurityProtocolType)解决方法来处理 4.0 代码。 -
是的,在我的回答中,我根据这些信息进一步走了几步来完成我的任务。
标签: vb.net ssl webrequest