ServicePointManager.FindServicePoint Metoda

Definicja

Przestrzeń nazw:

System.Net

Zestaw:

System.Net.ServicePoint.dll

Znajduje istniejący ServicePoint obiekt lub tworzy nowy ServicePoint obiekt do zarządzania komunikacją dla tego żądania.

Przeciążenia

FindServicePoint(Uri, IWebProxy)	Przestarzałe. Znajduje istniejący ServicePoint obiekt lub tworzy nowy ServicePoint obiekt do zarządzania komunikacją z określonym Uri obiektem.
FindServicePoint(Uri)	Przestarzałe. Znajduje istniejący ServicePoint obiekt lub tworzy nowy ServicePoint obiekt do zarządzania komunikacją z określonym Uri obiektem.
FindServicePoint(String, IWebProxy)	Przestarzałe. Znajduje istniejący ServicePoint obiekt lub tworzy nowy ServicePoint obiekt do zarządzania komunikacją z określonym identyfikatorem URI (Uniform Resource Identifier).

FindServicePoint(Uri, IWebProxy)

Źródło:

ServicePointManager.cs

Przestroga

WebRequest, HttpWebRequest, ServicePoint, and WebClient are obsolete. Use HttpClient instead.

Znajduje istniejący ServicePoint obiekt lub tworzy nowy ServicePoint obiekt do zarządzania komunikacją z określonym Uri obiektem.

public:
 static System::Net::ServicePoint ^ FindServicePoint(Uri ^ address, System::Net::IWebProxy ^ proxy);

[System.Obsolete("WebRequest, HttpWebRequest, ServicePoint, and WebClient are obsolete. Use HttpClient instead.", DiagnosticId="SYSLIB0014", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]
public static System.Net.ServicePoint FindServicePoint (Uri address, System.Net.IWebProxy? proxy);

[<System.Obsolete("WebRequest, HttpWebRequest, ServicePoint, and WebClient are obsolete. Use HttpClient instead.", DiagnosticId="SYSLIB0014", UrlFormat="https://aka.ms/dotnet-warnings/{0}")>]
static member FindServicePoint : Uri * System.Net.IWebProxy -> System.Net.ServicePoint

Public Shared Function FindServicePoint (address As Uri, proxy As IWebProxy) As ServicePoint

Parametry

address

Uri

Uri Obiekt, który zawiera adres zasobu internetowego do kontaktu.

proxy

IWebProxy

Dane serwera proxy dla tego żądania.

Zwraca

ServicePoint

ServicePoint Obiekt, który zarządza komunikacją dla żądania.

Atrybuty

ObsoleteAttribute

Wyjątki

ArgumentNullException

address to null.

InvalidOperationException

Osiągnięto maksymalną liczbę ServicePoint obiektów zdefiniowanych w MaxServicePoints elemecie .

Uwagi

Metoda FindServicePoint zwraca ServicePoint obiekt skojarzony z określoną nazwą hosta internetowego. Jeśli dla tego hosta nie ServicePoint istnieje żaden obiekt, ServicePointManager obiekt go utworzy.

Zobacz też

• ServicePoint

FindServicePoint(Uri)

Źródło:

ServicePointManager.cs

Przestroga

WebRequest, HttpWebRequest, ServicePoint, and WebClient are obsolete. Use HttpClient instead.

Znajduje istniejący ServicePoint obiekt lub tworzy nowy ServicePoint obiekt do zarządzania komunikacją z określonym Uri obiektem.

public:
 static System::Net::ServicePoint ^ FindServicePoint(Uri ^ address);

[System.Obsolete("WebRequest, HttpWebRequest, ServicePoint, and WebClient are obsolete. Use HttpClient instead.", DiagnosticId="SYSLIB0014", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]
public static System.Net.ServicePoint FindServicePoint (Uri address);

[<System.Obsolete("WebRequest, HttpWebRequest, ServicePoint, and WebClient are obsolete. Use HttpClient instead.", DiagnosticId="SYSLIB0014", UrlFormat="https://aka.ms/dotnet-warnings/{0}")>]
static member FindServicePoint : Uri -> System.Net.ServicePoint

Public Shared Function FindServicePoint (address As Uri) As ServicePoint

Parametry

address

Uri

Uri Obiekt zasobu internetowego do kontaktu.

Zwraca

ServicePoint

ServicePoint Obiekt, który zarządza komunikacją dla żądania.

Atrybuty

ObsoleteAttribute

Wyjątki

ArgumentNullException

address to null.

InvalidOperationException

Osiągnięto maksymalną liczbę ServicePoint obiektów zdefiniowanych w MaxServicePoints elemecie .

Uwagi

Metoda FindServicePoint zwraca ServicePoint obiekt skojarzony z określoną nazwą hosta internetowego. Jeśli dla tego hosta nie ServicePoint istnieje żaden obiekt, ServicePointManager obiekt go utworzy.

Zobacz też

• ServicePoint

FindServicePoint(String, IWebProxy)

Źródło:

ServicePointManager.cs

Przestroga

WebRequest, HttpWebRequest, ServicePoint, and WebClient are obsolete. Use HttpClient instead.

Znajduje istniejący ServicePoint obiekt lub tworzy nowy ServicePoint obiekt do zarządzania komunikacją z określonym identyfikatorem URI (Uniform Resource Identifier).

public:
 static System::Net::ServicePoint ^ FindServicePoint(System::String ^ uriString, System::Net::IWebProxy ^ proxy);

[System.Obsolete("WebRequest, HttpWebRequest, ServicePoint, and WebClient are obsolete. Use HttpClient instead.", DiagnosticId="SYSLIB0014", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]
public static System.Net.ServicePoint FindServicePoint (string uriString, System.Net.IWebProxy? proxy);

[<System.Obsolete("WebRequest, HttpWebRequest, ServicePoint, and WebClient are obsolete. Use HttpClient instead.", DiagnosticId="SYSLIB0014", UrlFormat="https://aka.ms/dotnet-warnings/{0}")>]
static member FindServicePoint : string * System.Net.IWebProxy -> System.Net.ServicePoint

Public Shared Function FindServicePoint (uriString As String, proxy As IWebProxy) As ServicePoint

Parametry

uriString

String

Identyfikator URI zasobu internetowego do nawiązania kontaktu.

proxy

IWebProxy

Dane serwera proxy dla tego żądania.

Zwraca

ServicePoint

ServicePoint Obiekt, który zarządza komunikacją dla żądania.

Atrybuty

ObsoleteAttribute

Wyjątki

UriFormatException

Identyfikator URI określony w pliku uriString jest nieprawidłowy.

InvalidOperationException

Osiągnięto maksymalną liczbę ServicePoint obiektów zdefiniowanych w MaxServicePoints elemecie .

Przykłady

W poniższym przykładzie kodu pokazano wywołanie tej metody w celu uzyskania dostępu ServicePoint do obiektu.

int main()
{
   array<String^>^args = Environment::GetCommandLineArgs();
   int port = 80;
   
   // Define a regular expression to parse the user's input.
   // This is a security check. It allows only
   // alphanumeric input strings between 2 to 40 characters long.
   Regex^ rex = gcnew Regex( "^[a-zA-Z]\\w{1,39}$" );
   if ( args->Length < 2 )
   {
      showUsage();
      return  -1;
   }

   String^ proxy = args[ 1 ];
   if ( (rex->Match(proxy))->Success != true )
   {
      Console::WriteLine( "Input string format not allowed." );
      return  -1;
   }

   String^ proxyAdd = String::Format( "http://{0}:{1}", proxy, port );
   
   // Create a proxy object.  
   WebProxy^ DefaultProxy = gcnew WebProxy( proxyAdd,true );
   
   // Set the proxy that all HttpWebRequest instances use.
   WebRequest::DefaultWebProxy = DefaultProxy;
   
   // Get the base interface for proxy access for the 
   // WebRequest-based classes.
   IWebProxy^ Iproxy = WebRequest::DefaultWebProxy;

   
   // Set the maximum number of ServicePoint instances to 
   // maintain. If a ServicePoint instance for that host already 
   // exists when your application requests a connection to
   // an Internet resource, the ServicePointManager object
   // returns this existing ServicePoint instance. If none exists 
   // for that host, it creates a new ServicePoint instance.
   ServicePointManager::MaxServicePoints = 4;
   
   // Set the maximum idle time of a ServicePoint instance to 10 seconds.
   // After the idle time expires, the ServicePoint object is eligible for
   // garbage collection and cannot be used by the ServicePointManager.
   ServicePointManager::MaxServicePointIdleTime = 10000;
   
   ServicePointManager::UseNagleAlgorithm = true;
   ServicePointManager::Expect100Continue = true;
   ServicePointManager::CheckCertificateRevocationList = true;
   ServicePointManager::DefaultConnectionLimit = ServicePointManager::DefaultPersistentConnectionLimit;
   
   // Create the Uri object for the resource you want to access.
   Uri^ MS = gcnew Uri( "http://msdn.microsoft.com/" );
   
   // Use the FindServicePoint method to find an existing 
   // ServicePoint object or to create a new one.   
   ServicePoint^ servicePoint = ServicePointManager::FindServicePoint( MS, Iproxy );
   ShowProperties( servicePoint );
   int hashCode = servicePoint->GetHashCode();
   Console::WriteLine( "Service point hashcode: {0}", hashCode );
   
   // Make a request with the same scheme identifier and host fragment
   // used to create the previous ServicePoint object.
   makeWebRequest( hashCode, "http://msdn.microsoft.com/library/" );
}

public static void Main(string[] args)
{
    int port = 80;

    // Define a regular expression to parse the user's input.
    // This is a security check. It allows only
    // alphanumeric input strings between 2 to 40 characters long.
    Regex rex = new Regex(@"^[a-zA-Z]\w{1,39}$");

    if (args.Length < 1)
    {
        showUsage();
        return;
    }
    string proxy = args[0];

    if ((rex.Match(proxy)).Success != true)
    {
        Console.WriteLine("Input string format not allowed.");
        return;
    }
    string proxyAdd = "http://" + proxy + ":" + port;

    // Create a proxy object.
    WebProxy DefaultProxy = new WebProxy(proxyAdd, true);

    // Set the proxy that all HttpWebRequest instances use.
    WebRequest.DefaultWebProxy = DefaultProxy;

    // Get the base interface for proxy access for the
    // WebRequest-based classes.
    IWebProxy Iproxy = WebRequest.DefaultWebProxy;

    // Set the maximum number of ServicePoint instances to
    // maintain. If a ServicePoint instance for that host already
    // exists when your application requests a connection to
    // an Internet resource, the ServicePointManager object
    // returns this existing ServicePoint instance. If none exists
    // for that host, it creates a new ServicePoint instance.
    ServicePointManager.MaxServicePoints = 4;

    // Set the maximum idle time of a ServicePoint instance to 10 seconds.
    // After the idle time expires, the ServicePoint object is eligible for
    // garbage collection and cannot be used by the ServicePointManager object.
    ServicePointManager.MaxServicePointIdleTime = 10000;

    ServicePointManager.UseNagleAlgorithm = true;
    ServicePointManager.Expect100Continue = true;
    ServicePointManager.CheckCertificateRevocationList = true;
    ServicePointManager.DefaultConnectionLimit = ServicePointManager.DefaultPersistentConnectionLimit;
    // Create the Uri object for the resource you want to access.
    Uri MS = new Uri("http://msdn.microsoft.com/");

    // Use the FindServicePoint method to find an existing
    // ServicePoint object or to create a new one.
    ServicePoint servicePoint = ServicePointManager.FindServicePoint(MS, Iproxy);

    ShowProperties(servicePoint);

    int hashCode = servicePoint.GetHashCode();

    Console.WriteLine("Service point hashcode: " + hashCode);

    // Make a request with the same scheme identifier and host fragment
    // used to create the previous ServicePoint object.
    makeWebRequest(hashCode, "http://msdn.microsoft.com/library/");
}

' This is the program entry point. It allows the user to enter 
' a server name that is used to locate its current homepage.
Public Shared Sub Main(ByVal args() As String)
    Dim proxy As String = Nothing
    Dim port As Integer = 80

    ' Define a regular expression to parse the user's input.
    ' This is a security check. It allows only
    ' alphanumeric input strings between 2 to 40 characters long.
    Dim rex As New Regex("^[a-zA-Z]\w{1,39}$")

    If args.Length = 0 Then
        ' Show how to use this program.
        showUsage()
        Return
    End If

    proxy = args(0)
    If (Not (rex.Match(proxy)).Success) Then
        Console.WriteLine("Input string format not allowed.")
        Return
    End If

    ' Create a proxy object.  
    Dim proxyAdd As String
    proxyAdd = "http://" + proxy + ":" + port.ToString()


    Dim DefaultProxy As New WebProxy(proxyAdd, True)

    ' Set the proxy that all HttpWebRequest instances use.
    WebRequest.DefaultWebProxy = DefaultProxy


    ' Get the base interface for proxy access for the 
    ' WebRequest-based classes.
    Dim Iproxy As IWebProxy = WebRequest.DefaultWebProxy

    ' Set the maximum number of ServicePoint instances to maintain.
    ' Note that, if a ServicePoint instance for that host already 
    ' exists when your application requests a connection to
    ' an Internet resource, the ServicePointManager object
    ' returns this existing ServicePoint. If none exists 
    ' for that host, it creates a new ServicePoint instance.
    ServicePointManager.MaxServicePoints = 4

    ' Set the maximum idle time of a ServicePoint instance to 10 seconds.
    ' After the idle time expires, the ServicePoint object is eligible for
    ' garbage collection and cannot be used by the ServicePointManager.
    ServicePointManager.MaxServicePointIdleTime = 10000


    ServicePointManager.UseNagleAlgorithm = True
    ServicePointManager.Expect100Continue = True
    ServicePointManager.CheckCertificateRevocationList = True
    ServicePointManager.DefaultConnectionLimit = _
        ServicePointManager.DefaultPersistentConnectionLimit
    ' Create the Uri object for the resource you want to access.
    Dim MS As New Uri("http://msdn.microsoft.com/")

    ' Use the FindServicePoint method to find an existing 
    ' ServicePoint object or to create a new one.   
    Dim servicePoint As ServicePoint = ServicePointManager.FindServicePoint(MS, Iproxy)
    ShowProperties(servicePoint)
    Dim hashCode As Integer = servicePoint.GetHashCode()
    Console.WriteLine(("Service point hashcode: " + hashCode.ToString()))

    ' Make a request with the same scheme identifier and host fragment
    ' used to create the previous ServicePoint object.
    makeWebRequest(hashCode, "http://msdn.microsoft.com/library/")

End Sub

Uwagi

Metoda FindServicePoint zwraca ServicePoint obiekt skojarzony z określoną nazwą hosta internetowego. Jeśli dla tego hosta nie ServicePoint istnieje żaden obiekt, ServicePointManager obiekt go utworzy.

Zobacz też

• Uri
• ServicePoint