ServicePointManager.FindServicePoint Methode

Definition

Namespace:

System.Net

Assembly:

System.Net.Requests.dll

Sucht ein vorhandenes ServicePoint-Objekt oder erstellt ein neues ServicePoint-Objekt, um die Kommunikation für diese Anforderung zu verwalten.

Überlädt

FindServicePoint(Uri, IWebProxy)	Sucht ein vorhandenes ServicePoint-Objekt oder erstellt ein neues ServicePoint-Objekt, um die Kommunikation mit dem angegebenen Uri-Objekt zu verwalten.
FindServicePoint(Uri)	Sucht ein vorhandenes ServicePoint-Objekt oder erstellt ein neues ServicePoint-Objekt, um die Kommunikation mit dem angegebenen Uri-Objekt zu verwalten.
FindServicePoint(String, IWebProxy)	Sucht ein vorhandenes ServicePoint-Objekt oder erstellt ein neues ServicePoint-Objekt, um die Kommunikation mit dem angegebenen URI (Uniform Resource Identifier) zu verwalten.

FindServicePoint(Uri, IWebProxy)

Quelle:

ServicePointManager.cs

Sucht ein vorhandenes ServicePoint-Objekt oder erstellt ein neues ServicePoint-Objekt, um die Kommunikation mit dem angegebenen Uri-Objekt zu verwalten.

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

public static System.Net.ServicePoint FindServicePoint (Uri address, System.Net.IWebProxy? proxy);

static member FindServicePoint : Uri * System.Net.IWebProxy -> System.Net.ServicePoint

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

Parameter

address

Uri

Ein Uri-Objekt mit der Adresse der Internetressource, mit der eine Verbindung hergestellt werden soll.

proxy

IWebProxy

Die Proxydaten für diese Anforderung.

Gibt zurück

ServicePoint

Das ServicePoint-Objekt, das die Kommunikation für die Anforderung verwaltet.

Ausnahmen

ArgumentNullException

address ist null.

InvalidOperationException

Die in ServicePoint definierte maximale Anzahl von MaxServicePoints-Objekten wurde erreicht.

Hinweise

Die FindServicePoint -Methode gibt das ServicePoint Objekt zurück, das dem angegebenen Internethostnamen zugeordnet ist. Wenn für diesen Host kein ServicePoint Objekt vorhanden ist, erstellt das ServicePointManager -Objekt ein Objekt.

Weitere Informationen

• ServicePoint

FindServicePoint(Uri)

Quelle:

ServicePointManager.cs

Sucht ein vorhandenes ServicePoint-Objekt oder erstellt ein neues ServicePoint-Objekt, um die Kommunikation mit dem angegebenen Uri-Objekt zu verwalten.

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

public static System.Net.ServicePoint FindServicePoint (Uri address);

static member FindServicePoint : Uri -> System.Net.ServicePoint

Public Shared Function FindServicePoint (address As Uri) As ServicePoint

Parameter

address

Uri

Das Uri-Objekt der Internetressource, mit der eine Verbindung hergestellt werden soll.

Gibt zurück

ServicePoint

Das ServicePoint-Objekt, das die Kommunikation für die Anforderung verwaltet.

Ausnahmen

ArgumentNullException

address ist null.

InvalidOperationException

Die in ServicePoint definierte maximale Anzahl von MaxServicePoints-Objekten wurde erreicht.

Hinweise

Die FindServicePoint -Methode gibt das ServicePoint Objekt zurück, das dem angegebenen Internethostnamen zugeordnet ist. Wenn für diesen Host kein ServicePoint Objekt vorhanden ist, erstellt das ServicePointManager -Objekt ein Objekt.

Weitere Informationen

• ServicePoint

FindServicePoint(String, IWebProxy)

Quelle:

ServicePointManager.cs

Sucht ein vorhandenes ServicePoint-Objekt oder erstellt ein neues ServicePoint-Objekt, um die Kommunikation mit dem angegebenen URI (Uniform Resource Identifier) zu verwalten.

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

public static System.Net.ServicePoint FindServicePoint (string uriString, System.Net.IWebProxy? proxy);

static member FindServicePoint : string * System.Net.IWebProxy -> System.Net.ServicePoint

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

Parameter

uriString

String

Der URI der Internetressource, mit der eine Verbindung hergestellt werden soll.

proxy

IWebProxy

Die Proxydaten für diese Anforderung.

Gibt zurück

ServicePoint

Das ServicePoint-Objekt, das die Kommunikation für die Anforderung verwaltet.

Ausnahmen

UriFormatException

Der in uriString angegebene URI ist ungültig.

InvalidOperationException

Die in ServicePoint definierte maximale Anzahl von MaxServicePoints-Objekten wurde erreicht.

Beispiele

Im folgenden Codebeispiel wird das Aufrufen dieser Methode für den Zugriff auf ein ServicePoint -Objekt veranschaulicht.

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)
   {
      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)
    {
        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

Hinweise

Die FindServicePoint -Methode gibt das ServicePoint Objekt zurück, das dem angegebenen Internethostnamen zugeordnet ist. Wenn für diesen Host kein ServicePoint Objekt vorhanden ist, erstellt das ServicePointManager -Objekt ein Objekt.

Weitere Informationen

• Uri
• ServicePoint