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如何向WebClient(c)添加证书?

http-post webclient certificate httpwebrequest c#

Andrew · 技术社区 · 16 年前

我知道向httpwebrequest添加证书非常简单。但是,我还没有找到一种使用WebClient实现等效的方法。基本上,我想使用WebClient发送一个带有特定证书的日志。

您将如何使用WebClient来完成这个精确的代码:

    var request = (HttpWebRequest) WebRequest.Create("my-url");
    request.Method = "POST";
    request.ClientCertificates.Add(new X509Certificate()); //add cert

4 回复 | 直到 13 年前

Mikael Svenson 16 年前

您必须子类化并重写一个或多个函数。

class MyWebClient : WebClient
{
    protected override WebRequest GetWebRequest(Uri address)
    {
        HttpWebRequest request = (HttpWebRequest)base.GetWebRequest(address);
        request.ClientCertificates.Add(new X509Certificate());
        return request;
    }
}

yop038 13 年前

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;
    }
}

现在您可以使用自签名证书了!(基础连接已关闭:无法为SSL/TLS安全通道建立信任关系。;基础连接已关闭:无法为SSL/TLS安全通道建立信任关系。;“)

        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));

Chris Haas 16 年前

只是子类 WebClient 添加你自己的 ClientCertificates 属性并重写 WebClient.GetWebRequest(System.Uri) 方法。我没有时间将它从vb转换为c,但它应该是相当不言自明的:

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

Jose 14 年前

在前端安装新证书时发生了一件有趣的事情。我们开始得到错误:

“基础连接已关闭:无法为SSL/TLS安全通道建立信任关系。;基础连接已关闭:无法为SSL/TLS安全通道建立信任关系。;”

我们通过访问每个前端并打开浏览器来解决错误。似乎IE正在缓存旧证书。通过打开浏览器,新证书生效。问题解决了!