IWebProxy.IsBypassed(Uri) 方法

定義

命名空間:

System.Net

組件:

System.Net.Primitives.dll

指示不應該為指定的主機使用 Proxy。

public:
 bool IsBypassed(Uri ^ host);

public bool IsBypassed (Uri host);

abstract member IsBypassed : Uri -> bool

Public Function IsBypassed (host As Uri) As Boolean

參數

host

Uri

要檢查 Proxy 使用的主機 Uri。

傳回

Boolean

如果不應該為 host 使用 Proxy 伺服器，則為 true，否則為 false。

範例

下列範例會 IsBypassed 使用 屬性來判斷 Proxy 伺服器是否應該用於指定的主機。

WebProxy_Interface^ webProxy_Interface = gcnew WebProxy_Interface( gcnew Uri( "http://proxy.example.com" ) );

webProxy_Interface->Credentials = gcnew NetworkCredential( "myusername", "mypassword" );

Console::WriteLine( "The web proxy is : {0}", webProxy_Interface->GetProxy( gcnew Uri( "http://www.contoso.com" ) ) );

// Check if the webproxy can ne bypassed for the site "http://www.contoso.com".
if ( webProxy_Interface->IsBypassed( gcnew Uri( "http://www.contoso.com" ) ) )
{
   Console::WriteLine( "Web Proxy is by passed" );
}
else
{
   Console::WriteLine( "Web Proxy is not by passed" );
}

WebProxy_Interface webProxy_Interface = new WebProxy_Interface(new Uri("http://proxy.example.com"));

webProxy_Interface.Credentials = new NetworkCredential("myusername", "mypassword");

Uri testUri = new Uri("http://www.contoso.com");

// Determine whether the Web proxy can be bypassed for the site "http://www.contoso.com".
if(webProxy_Interface.IsBypassed(testUri))
{
    Console.WriteLine("Web Proxy is by passed");
}
else
{
    Uri? webProxyServer = webProxy_Interface.GetProxy(testUri);
    // In general, we wouldn't expect the condition (`webProxyServer! == testUri`) true here, if  IsBypassed returns `false`.
    // However, technically our interface can allow that.
    if (webProxyServer is null || webProxyServer! == testUri)
    {
        Console.WriteLine("Web proxy is bypassed");
    }
    else
    {
        Console.WriteLine("Web proxy is not bypassed");
        Console.WriteLine($"The web proxy is: {webProxyServer!}");
    }
}

 Public Shared Sub Main()
     Dim webProxy_Interface As New WebProxy_Interface(New Uri("http://proxy.example.com"))
     
     webProxy_Interface.Credentials = New NetworkCredential("myusername", "mypassword")
     
     Console.WriteLine("The web proxy is : {0}", webProxy_Interface.GetProxy(New Uri("http://www.contoso.com")))
     
     'Determine whether the Web proxy can be bypassed for the site "http://www.contoso.com".
 console.writeline("For the Uri http://www.contoso.com , the ")
     If webProxy_Interface.IsBypassed(New Uri("http://www.contoso.com")) Then
         Console.WriteLine("webproxy is by passed")
     Else
         Console.WriteLine("webproxy is not bypassed")
     End If 
 End Sub

備註

方法 IsBypassed 指出是否要使用 Proxy 伺服器來存取 參數中指定的 host 主機。 如果傳 IsBypassed 回 true，則 Proxy 不會用來連絡主機，而且要求會直接傳遞至伺服器。 從 IsBypassed 取得false不保證 URI 會進行 Proxy 處理;您仍然需要呼叫 GetProxy 方法來判斷此問題。