你怎么能证书添加到Web客户端(C#)?
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20-09-2019 - |
题
我知道这是很简单的一个证书添加到HttpWebRequest的。但是,我还没有找到一个方式做使用Web客户端等效的。基本上,我想使用的WebClient特定的证书发出一个POST。
您将如何使用Web客户端完成这个确切的代码:
var request = (HttpWebRequest) WebRequest.Create("my-url");
request.Method = "POST";
request.ClientCertificates.Add(new X509Certificate()); //add cert
解决方案
您必须继承和覆盖一个或多个功能。
class MyWebClient : WebClient
{
protected override WebRequest GetWebRequest(Uri address)
{
HttpWebRequest request = (HttpWebRequest)base.GetWebRequest(address);
request.ClientCertificates.Add(new X509Certificate());
return request;
}
}
其他提示
public class CertificateWebClient : WebClient
{
private readonly X509Certificate2 certificate;
public CertificateWebClient(X509Certificate2 cert)
{
certificate = cert;
}
protected override WebRequest GetWebRequest(Uri address)
{
HttpWebRequest request = (HttpWebRequest)base.GetWebRequest(address);
System.Net.ServicePointManager.ServerCertificateValidationCallback = delegate(Object obj, X509Certificate X509certificate, X509Chain chain, System.Net.Security.SslPolicyErrors errors)
{
return true;
};
request.ClientCertificates.Add(certificate);
return request;
}
}
现在你可以用自签名的证书! (“基础连接已关闭:无法建立用于SSL / TLS安全通道信任关系;基础连接已关闭:无法建立用于SSL / TLS安全通道的信任关系;”)
X509Certificate2 Cert = new X509Certificate2("client.p12", "1234", X509KeyStorageFlags.MachineKeySet);
// Create a new WebClient instance.
CertificateWebClient myWebClient = new CertificateWebClient(Cert);
string fileName = Installation.destXML;
string uriString = "https://xxxxxxx.xx:918";
// Upload the file to the URI.
// The 'UploadFile(uriString,fileName)' method implicitly uses HTTP POST method.
byte[] responseArray = myWebClient.UploadFile(uriString, fileName);
// Decode and display the response.
Console.WriteLine("\nResponse Received.The contents of the file uploaded are:\n{0}",
System.Text.Encoding.ASCII.GetString(responseArray));
只要继承WebClient
,添加自己的ClientCertificates
财产和重写WebClient.GetWebRequest(System.Uri)
方法。我没有时间去这个从VB转换为C#,但它应该是相当不言自明:
Imports System.Net
Public Class WebClient2
Inherits System.Net.WebClient
Private _ClientCertificates As New System.Security.Cryptography.X509Certificates.X509CertificateCollection
Public ReadOnly Property ClientCertificates() As System.Security.Cryptography.X509Certificates.X509CertificateCollection
Get
Return Me._ClientCertificates
End Get
End Property
Protected Overrides Function GetWebRequest(ByVal address As System.Uri) As System.Net.WebRequest
Dim R = MyBase.GetWebRequest(address)
If TypeOf R Is HttpWebRequest Then
Dim WR = DirectCast(R, HttpWebRequest)
If Me._ClientCertificates IsNot Nothing AndAlso Me._ClientCertificates.Count > 0 Then
WR.ClientCertificates.AddRange(Me._ClientCertificates)
End If
End If
Return R
End Function
End Class
在安装上我们的前端,新证书的,有趣的事情发生了。我们开始收到错误:
“基础连接已关闭:无法建立用于SSL / TLS安全通道;基础连接已关闭信任关系:无法建立信任关系的SSL / TLS安全通道;”
我们通过将每个前端和打开浏览器照顾错误的。看来,IE被缓存旧的证书。通过打开浏览器,新证书生效。问题解决!
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