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博客园 - 永不言败

JavaScript 语言基础知识点总结(思维导图) 关于Visual Studio项目系统属性中的宏 MongoDb的相关资料 javascript apply 和call的区别,javascript设计模式 Adding a QR Code Reader in Flex on Android castle 在mvc3如何注入 Castle Automatic Transaction Management python webpy模板介绍 使用 asp.net mvc和 jQuery UI 控件包 webpy demo核心代码 Howto create a System.Linq.Expressions.Expression for Like 实体框架继承关系。很好 淘宝店铺图片数据迁移核心代码 mvc扩展 ASP.NET MVC 2 Templates Nhibernate继承 Castle 容器注入学习例子 - 永不言败 javaScript 运算符 && 和 || 的返回值 event.x,event.clientX,event.offsetX区别 - 永不言败
C#、VB.NET使用HttpWebRequest访问https地址(SSL)的实现
永不言败 · 2010-01-27 · via 博客园 - 永不言败

用httpwebrequest访问一个SSL类型的地址 https://xxxx/ 时,报错 “未能为 SSL/TLS 安全通道建立信任关系(Could not establish trust relationship for the SSL/TLS secure channel)”

查了下MSDN,找到了解决方法,SSL网站,连接时需要提供证书,对于非必须提供客户端证书的情况,只要返回一个安全确认即可。但是此方法的实现,在.NET 1.1 和 .NET 2.0 下是不同的

使用的命名空间:

using System.Net;
using System.Net.Security;
using System.Security.Authentication;
using System.Security.Cryptography.X509Certificates;

.Net 2.0

public bool CheckValidationResult(object sender, X509Certificate certificate, X509Chain chain, SslPolicyErrors errors)
{
    //直接确认,否则打不开
    return true;
}
    
private void button1_Click(object sender, EventArgs e)
{
    ServicePointManager.ServerCertificateValidationCallback = new System.Net.Security.RemoteCertificateValidationCallback(CheckValidationResult);
    HttpWebRequest req = (HttpWebRequest)WebRequest.CreateDefault(new Uri("https://zu14.cn/"));
    req.Method = "GET";
    HttpWebResponse res = (HttpWebResponse)req.GetResponse();
    //...正常使用了,和访问普通的 http:// 地址一样了

}