WebRequest.AuthenticationLevel 屬性

定義

命名空間:

System.Net

組件:

System.Net.Requests.dll

來源:

WebRequest.cs

取得或設定值，指出用於這個要求的驗證和模擬等級。

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

屬性值

AuthenticationLevel

AuthenticationLevel 值的位元組合。 預設值是 MutualAuthRequested。

在相互驗證中，用戶端和伺服器都會出示建立其識別的認證。 MutualAuthRequired 和 MutualAuthRequested 與 Kerberos 驗證有關。 Kerberos 驗證可以直接支援，或在使用交涉安全性通訊協定時，用來選取實際的安全性通訊協定。 如需驗證通訊協議的詳細資訊，請參閱 因特網驗證。

若要判斷是否發生相互驗證現象，請檢查 IsMutuallyAuthenticated 屬性。

如果您指定 MutualAuthRequired 驗證旗標值，但相互驗證未發生，則應用程式會收到 IOException 以及 ProtocolViolationException 內部例外狀況，指出相互驗證失敗。

範例

下列程式代碼範例會設定此屬性的值。

// 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();
}