ServicePointManager.FindServicePoint Metod

Definition

Namnområde:: System.Net

Sammansättningar:: netstandard.dll, System.Net.Requests.dll

Sammansättningar:: netstandard.dll, System.Net.ServicePoint.dll

Sammansättning:: System.Net.ServicePoint.dll

Sammansättning:: System.dll

Sammansättning:: netstandard.dll

Viktigt

En del information gäller för förhandsversionen av en produkt och kan komma att ändras avsevärt innan produkten blir allmänt tillgänglig. Microsoft lämnar inga garantier, uttryckliga eller underförstådda, avseende informationen som visas här.

Söker efter ett befintligt ServicePoint objekt eller skapar ett nytt ServicePoint objekt för att hantera kommunikationen för den här begäran.

Överlagringar

Name	Description
FindServicePoint(Uri, IWebProxy)	Föråldrad. Hittar ett befintligt ServicePoint objekt eller skapar ett nytt ServicePoint objekt för att hantera kommunikation med det angivna Uri objektet.
FindServicePoint(Uri)	Föråldrad. Hittar ett befintligt ServicePoint objekt eller skapar ett nytt ServicePoint objekt för att hantera kommunikation med det angivna Uri objektet.
FindServicePoint(String, IWebProxy)	Föråldrad. Söker efter ett befintligt ServicePoint objekt eller skapar ett nytt ServicePoint objekt för att hantera kommunikation med angiven URI (Uniform Resource Identifier).

FindServicePoint(Uri, IWebProxy)

Källa:: ServicePointManager.cs

Källa:: ServicePointManager.cs

Källa:: ServicePointManager.cs

Källa:: ServicePointManager.cs

Källa:: ServicePointManager.cs

Varning

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

Hittar ett befintligt ServicePoint objekt eller skapar ett nytt ServicePoint objekt för att hantera kommunikation med det angivna Uri objektet.

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

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);

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

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

[<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

Parametrar

address: Uri

Ett Uri objekt som innehåller adressen till den Internetresurs som ska kontaktas.

proxy: IWebProxy

Proxydata för den här begäran.

Returer

ServicePoint

Objektet ServicePoint som hanterar kommunikation för begäran.

Attribut: ObsoleteAttribute

Undantag

ArgumentNullException

address är null.

InvalidOperationException

Det maximala antalet ServicePoint objekt som definierats i MaxServicePoints har uppnåtts.

Kommentarer

Metoden FindServicePoint returnerar det ServicePoint objekt som är associerat med det angivna Internetvärdnamnet. Om det inte finns något ServicePoint objekt för värden ServicePointManager skapar objektet ett.

Se även

ServicePoint

Gäller för

FindServicePoint(Uri)

Källa:: ServicePointManager.cs

Källa:: ServicePointManager.cs

Källa:: ServicePointManager.cs

Källa:: ServicePointManager.cs

Källa:: ServicePointManager.cs

Varning

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

Hittar ett befintligt ServicePoint objekt eller skapar ett nytt ServicePoint objekt för att hantera kommunikation med det angivna Uri objektet.

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

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);

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

[<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

Parametrar

address: Uri

Objektet Uri för den Internetresurs som ska kontaktas.

Returer

ServicePoint

Objektet ServicePoint som hanterar kommunikation för begäran.

Attribut: ObsoleteAttribute

Undantag

ArgumentNullException

address är null.

InvalidOperationException

Det maximala antalet ServicePoint objekt som definierats i MaxServicePoints har uppnåtts.

Kommentarer

Se även

ServicePoint

Gäller för

FindServicePoint(String, IWebProxy)

Källa:: ServicePointManager.cs

Källa:: ServicePointManager.cs

Källa:: ServicePointManager.cs

Källa:: ServicePointManager.cs

Källa:: ServicePointManager.cs

Varning

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

Söker efter ett befintligt ServicePoint objekt eller skapar ett nytt ServicePoint objekt för att hantera kommunikation med angiven URI (Uniform Resource Identifier).

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);

[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);

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

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

[<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

Parametrar

uriString: String

URI:n för den Internetresurs som ska kontaktas.

proxy: IWebProxy

Proxydata för den här begäran.

Returer

ServicePoint

Objektet ServicePoint som hanterar kommunikation för begäran.

Attribut: ObsoleteAttribute

Undantag

UriFormatException

Den URI som anges i uriString är ogiltig.

InvalidOperationException

Det maximala antalet ServicePoint objekt som definierats i MaxServicePoints har uppnåtts.

Exempel

Följande kodexempel visar hur du anropar den här metoden för att komma åt ett ServicePoint objekt.

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

Kommentarer

Se även

Gäller för

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