ServicePointManager.FindServicePoint Méthode

Définition

Espace de noms:

System.Net

Assembly:

System.Net.Requests.dll

Recherche un objet ServicePoint existant ou crée un objet ServicePoint pour gérer les communications liées à cette demande.

Surcharges

FindServicePoint(Uri, IWebProxy)	Recherche un objet ServicePoint existant ou crée un objet ServicePoint pour gérer les communications avec l'objet Uri spécifié.
FindServicePoint(Uri)	Recherche un objet ServicePoint existant ou crée un objet ServicePoint pour gérer les communications avec l'objet Uri spécifié.
FindServicePoint(String, IWebProxy)	Recherche un objet ServicePoint existant ou crée un nouvel objet ServicePoint pour gérer les communications avec l'URI (Uniform Resource Identifier) spécifié.

FindServicePoint(Uri, IWebProxy)

Source:

ServicePointManager.cs

Recherche un objet ServicePoint existant ou crée un objet ServicePoint pour gérer les communications avec l'objet Uri spécifié.

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

Paramètres

address

Uri

Objet Uri contenant l'adresse de la ressource Internet à contacter.

proxy

IWebProxy

Données du proxy relatives à cette demande.

Retours

ServicePoint

Objet ServicePoint qui gère les communications liées à la demande.

Exceptions

ArgumentNullException

address a la valeur null.

InvalidOperationException

Le nombre maximal d'objets ServicePoint défini dans MaxServicePoints est atteint.

Remarques

La FindServicePoint méthode retourne l’objet ServicePoint associé au nom d’hôte Internet spécifié. S’il n’existe aucun ServicePoint objet pour cet hôte, l’objet en ServicePointManager crée un.

Voir aussi

• ServicePoint

FindServicePoint(Uri)

Source:

ServicePointManager.cs

Recherche un objet ServicePoint existant ou crée un objet ServicePoint pour gérer les communications avec l'objet Uri spécifié.

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

Paramètres

address

Uri

Objet Uri de la ressource Internet à contacter.

Retours

ServicePoint

Objet ServicePoint qui gère les communications liées à la demande.

Exceptions

ArgumentNullException

address a la valeur null.

InvalidOperationException

Le nombre maximal d'objets ServicePoint défini dans MaxServicePoints est atteint.

Remarques

La FindServicePoint méthode retourne l’objet ServicePoint associé au nom d’hôte Internet spécifié. S’il n’existe aucun ServicePoint objet pour cet hôte, l’objet en ServicePointManager crée un.

Voir aussi

• ServicePoint

FindServicePoint(String, IWebProxy)

Source:

ServicePointManager.cs

Recherche un objet ServicePoint existant ou crée un nouvel objet ServicePoint pour gérer les communications avec l'URI (Uniform Resource Identifier) spécifié.

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

Paramètres

uriString

String

URI de la ressource Internet à contacter.

proxy

IWebProxy

Données du proxy relatives à cette demande.

Retours

ServicePoint

Objet ServicePoint qui gère les communications liées à la demande.

Exceptions

UriFormatException

L'URI spécifié dans uriString n'est pas valide.

InvalidOperationException

Le nombre maximal d'objets ServicePoint défini dans MaxServicePoints est atteint.

Exemples

L’exemple de code suivant illustre l’appel de cette méthode pour accéder à un ServicePoint objet.

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

Remarques

La FindServicePoint méthode retourne l’objet ServicePoint associé au nom d’hôte Internet spécifié. S’il n’existe aucun ServicePoint objet pour cet hôte, l’objet en ServicePointManager crée un.

Voir aussi

• Uri
• ServicePoint