如何在C#中使用SSL的HTTP GET请求？(违反协议)

Question

我目前正在尝试从在C#中使用SSL的服务器获得响应.我有在Java中执行此操作的代码,但看起来它们不会以1:1进行翻译.

我确实有一些代码,我发现它适用于常规页面,但不适用于我需要的代码(可能是因为SSL的事情).这是代码:

        WebRequest request = WebRequest.Create("https://" + sslServerHost + ":" + sslServerPort);
    request.Proxy = null;
    request.Credentials = CredentialCache.DefaultCredentials;

    HttpWebResponse response = (HttpWebResponse)request.GetResponse();
    Stream dataStream = response.GetResponseStream();
    StreamReader reader = new StreamReader(dataStream);
    string responseFromServer = reader.ReadToEnd();

更新:对不起,我似乎忘记了错误是什么.我在"HttpWebResponse response =(HttpWebResponse)request.GetResponse();"行中遇到了协议违规异常.有任何想法吗？多谢你们.

Answer 1

SSL上的HTTP会话使用正确颁发的证书进行验证.

您可以使用RemoteCertificateValidationCallback委托来验证SSL证书,如下所示:

public static void ConnectSSL()
{

    WebRequest request = WebRequest.Create("https://" + sslServerHost + ":" + sslServerPort);
    request.Proxy = null;
    request.Credentials = CredentialCache.DefaultCredentials;

   //allows for validation of SSL certificates 

    ServicePointManager.ServerCertificateValidationCallback += new  System.Net.Security.RemoteCertificateValidationCallback(ValidateServerCertificate);

    HttpWebResponse response = (HttpWebResponse)request.GetResponse();
    Stream dataStream = response.GetResponseStream();
    StreamReader reader = new StreamReader(dataStream);
    string responseFromServer = reader.ReadToEnd();

}

//for testing purpose only, accept any dodgy certificate... 
public static bool ValidateServerCertificate(object sender, X509Certificate certificate, X509Chain chain, SslPolicyErrors sslPolicyErrors)
{
          return true; 
}

Answer 2

只是一个想法，但是你尝试过最后加一个“/”吗？另外 - 您可能会发现这种方法更容易：

string s;
using(WebClient client = new WebClient()) {
    client.UseDefaultCredentials = true;
    s = client.DownloadString("https://" + sslServerHost + ":"
       + sslServerPort + "/");
}