C# Https (转载)

正常情况下，处理https和http没有什么区别，如以下代码，显示了https://www.softlayer.com/的内容

string url = “https://www.softlayer.com/”; HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url); HttpWebResponse response = (HttpWebResponse)request.GetResponse(); string encoding = response.ContentEncoding; if (encoding == null || encoding.Length < 1) {     encoding = "UTF-8"; //默认编码 } StreamReader reader = new StreamReader(response.GetResponseStream(), Encoding.GetEncoding(encoding)); Console.Write(reader.ReadToEnd()); response.Close();

和http的不同就是地址由http改为了https

但是，如果你将 https://www.softlayer.com/ 改为 https://softlayer.com/，会发现一个异常 未能为 SSL/TLS 安全通道建立信任关系 怎么回事？ 用浏览器试一下，访问 https://www.softlayer.com/ 没有问题 访问 https://softlayer.com/ 会有证书问题（虽然是我们自己造成的） 这就对了，如果有证书问题，不做特殊处理，将会抛出异常 怎么处理呢？ 如果是dot net 2.0 或以上，加上一个确认函数就可以了，代码如：

ServicePointManager.ServerCertificateValidationCallback = new RemoteCertificateValidationCallback(CheckValidationResult); string url = “https://softlayer.com/”; HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url); HttpWebResponse response = (HttpWebResponse)request.GetResponse(); string encoding = response.ContentEncoding; if (encoding == null || encoding.Length < 1) {     encoding = "UTF-8"; //默认编码 } StreamReader reader = new StreamReader(response.GetResponseStream(), Encoding.GetEncoding(encoding)); Console.Write(reader.ReadToEnd()); response.Close();

public bool CheckValidationResult(object sender, X509Certificate certificate, X509Chain chain, SslPolicyErrors errors) { // Always accept     Console.WriteLine(“accept ” + certificate.GetName());     return true; //总是接受 }

using System.Net; using System.IO; using System.Web; using System.Net.Security; using System.Security; using System.Security.Cryptography; using System.Security.Cryptography.X509Certificates;

如果是dot net 1.1，写法略有不同

ServicePointManager.CertificatePolicy = new AcceptAllCertificatePolicy();

internal class AcceptAllCertificatePolicy : ICertificatePolicy {     public AcceptAllCertificatePolicy() {     }     public bool CheckValidationResult(ServicePoint sPoint, System.Security.Cryptography.X509Certificates.X509Certificate cert, WebRequest wRequest, int certProb) {     // Always accept     return true;     } }