WebRequest.AuthenticationLevel 属性

定义

命名空间:

System.Net

程序集:

System.Net.Requests.dll

程序集:

System.dll

程序集:

netstandard.dll

获取或设置用于此请求的身份验证和模拟的级别。

public:
 property System::Net::Security::AuthenticationLevel AuthenticationLevel { System::Net::Security::AuthenticationLevel get(); void set(System::Net::Security::AuthenticationLevel value); };

public System.Net.Security.AuthenticationLevel AuthenticationLevel { get; set; }

member this.AuthenticationLevel : System.Net.Security.AuthenticationLevel with get, set

Public Property AuthenticationLevel As AuthenticationLevel

属性值

AuthenticationLevel

AuthenticationLevel 值的按位组合。 默认值是 MutualAuthRequested。

在相互身份验证中，客户端和服务器双方都出示凭据以确定其身份。 MutualAuthRequired 和 MutualAuthRequested 值与 Kerberos 身份验证有关。 可以直接支持 Kerberos 身份验证，也可以仅在使用 Negotiate 安全协议选择实际的安全协议时使用该身份验证。 有关身份验证协议的详细信息，请参阅 Internet 身份验证。

若要确定相互身份验证是否发生，请检查 IsMutuallyAuthenticated 属性。

如果你指定了 MutualAuthRequired 身份验证标志值，而未发生相互身份验证，则应用程序将收到一个带有 ProtocolViolationException 内部异常的 IOException，指示相互身份验证失败。

示例

下面的代码示例设置此属性的值。

// The following example uses the System, System.Net, 
// and System.IO namespaces.
static void RequestMutualAuth( Uri^ resource )
{
   // Create a new HttpWebRequest object for the specified resource.
   WebRequest^ request = dynamic_cast<WebRequest^>(WebRequest::Create( resource ));

   // Request mutual authentication.
   request->AuthenticationLevel = AuthenticationLevel::MutualAuthRequested;

   // Supply client credentials.
   request->Credentials = CredentialCache::DefaultCredentials;
   HttpWebResponse^ response = dynamic_cast<HttpWebResponse^>(request->GetResponse());

   // Determine whether mutual authentication was used.
   Console::WriteLine( L"Is mutually authenticated? {0}", response->IsMutuallyAuthenticated );

   // Read and display the response.
   Stream^ streamResponse = response->GetResponseStream();
   StreamReader^ streamRead = gcnew StreamReader( streamResponse );
   String^ responseString = streamRead->ReadToEnd();
   Console::WriteLine( responseString );

   // Close the stream objects.
   streamResponse->Close();
   streamRead->Close();

   // Release the HttpWebResponse.
   response->Close();
}

// The following example uses the System, System.Net,
// and System.IO namespaces.

public static void RequestMutualAuth(Uri resource)
{
    // Create a new HttpWebRequest object for the specified resource.
    WebRequest request=(WebRequest) WebRequest.Create(resource);
    // Request mutual authentication.
   request.AuthenticationLevel = AuthenticationLevel.MutualAuthRequested;
    // Supply client credentials.
    request.Credentials = CredentialCache.DefaultCredentials;
    HttpWebResponse response = (HttpWebResponse) request.GetResponse();
    // Determine whether mutual authentication was used.
    Console.WriteLine("Is mutually authenticated? {0}", response.IsMutuallyAuthenticated);
    // Read and display the response.
    Stream streamResponse = response.GetResponseStream();
    StreamReader streamRead = new StreamReader(streamResponse);
    string responseString = streamRead.ReadToEnd();
   Console.WriteLine(responseString);
    // Close the stream objects.
    streamResponse.Close();
    streamRead.Close();
    // Release the HttpWebResponse.
    response.Close();
}