ServicePointManager.FindServicePoint Method
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Finds an existing ServicePoint object or creates a new ServicePoint object to manage communication for this request.
| FindServicePoint(Uri, IWebProxy) |
Obsolete.
Finds an existing ServicePoint object or creates a new ServicePoint object to manage communications with the specified Uri object. |
| FindServicePoint(Uri) |
Obsolete.
Finds an existing ServicePoint object or creates a new ServicePoint object to manage communications with the specified Uri object. |
| FindServicePoint(String, IWebProxy) |
Obsolete.
Finds an existing ServicePoint object or creates a new ServicePoint object to manage communications with the specified Uniform Resource Identifier (URI). |
- Source:
- ServicePointManager.cs
- Source:
- ServicePointManager.cs
- Source:
- ServicePointManager.cs
Caution
WebRequest, HttpWebRequest, ServicePoint, and WebClient are obsolete. Use HttpClient instead.
Finds an existing ServicePoint object or creates a new ServicePoint object to manage communications with the specified Uri object.
public:
static System::Net::ServicePoint ^ FindServicePoint(Uri ^ address, System::Net::IWebProxy ^ proxy);C#
public static System.Net.ServicePoint FindServicePoint(Uri address, System.Net.IWebProxy? proxy);C#
[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);C#
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.ServicePointPublic Shared Function FindServicePoint (address As Uri, proxy As IWebProxy) As ServicePointParameters
- proxy
- IWebProxy
The proxy data for this request.
Returns
The ServicePoint object that manages communications for the request.
- Attributes
Exceptions
address is null.
The maximum number of ServicePoint objects defined in MaxServicePoints has been reached.
Remarks
The FindServicePoint method returns the ServicePoint object associated with the specified Internet host name. If no ServicePoint object exists for that host, the ServicePointManager object creates one.
See also
Applies to
.NET 10 és más verziók
| Termék | Verziók (Elavult) |
|---|---|
| .NET | Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 9, 10 (6, 7, 8) |
| .NET Framework | 1.1, 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1 |
| .NET Standard | 2.0, 2.1 |
- Source:
- ServicePointManager.cs
- Source:
- ServicePointManager.cs
- Source:
- ServicePointManager.cs
Caution
WebRequest, HttpWebRequest, ServicePoint, and WebClient are obsolete. Use HttpClient instead.
Finds an existing ServicePoint object or creates a new ServicePoint object to manage communications with the specified Uri object.
public:
static System::Net::ServicePoint ^ FindServicePoint(Uri ^ address);C#
public static System.Net.ServicePoint FindServicePoint(Uri address);C#
[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.ServicePointPublic Shared Function FindServicePoint (address As Uri) As ServicePointParameters
Returns
The ServicePoint object that manages communications for the request.
- Attributes
Exceptions
address is null.
The maximum number of ServicePoint objects defined in MaxServicePoints has been reached.
Remarks
The FindServicePoint method returns the ServicePoint object associated with the specified Internet host name. If no ServicePoint object exists for that host, the ServicePointManager object creates one.
See also
Applies to
.NET 10 és más verziók
| Termék | Verziók (Elavult) |
|---|---|
| .NET | Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 9, 10 (6, 7, 8) |
| .NET Framework | 1.1, 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1 |
| .NET Standard | 2.0, 2.1 |
- Source:
- ServicePointManager.cs
- Source:
- ServicePointManager.cs
- Source:
- ServicePointManager.cs
Caution
WebRequest, HttpWebRequest, ServicePoint, and WebClient are obsolete. Use HttpClient instead.
Finds an existing ServicePoint object or creates a new ServicePoint object to manage communications with the specified Uniform Resource Identifier (URI).
public:
static System::Net::ServicePoint ^ FindServicePoint(System::String ^ uriString, System::Net::IWebProxy ^ proxy);C#
public static System.Net.ServicePoint FindServicePoint(string uriString, System.Net.IWebProxy? proxy);C#
[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);C#
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.ServicePointPublic Shared Function FindServicePoint (uriString As String, proxy As IWebProxy) As ServicePointParameters
- uriString
- String
The URI of the Internet resource to be contacted.
- proxy
- IWebProxy
The proxy data for this request.
Returns
The ServicePoint object that manages communications for the request.
- Attributes
Exceptions
The URI specified in uriString is invalid.
The maximum number of ServicePoint objects defined in MaxServicePoints has been reached.
Examples
The following code example demonstrates calling this method to access a ServicePoint object.
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/" );
}
C#
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
Remarks
The FindServicePoint method returns the ServicePoint object associated with the specified Internet host name. If no ServicePoint object exists for that host, the ServicePointManager object creates one.
See also
Applies to
.NET 10 és más verziók
| Termék | Verziók (Elavult) |
|---|---|
| .NET | Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 9, 10 (6, 7, 8) |
| .NET Framework | 1.1, 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1 |
| .NET Standard | 2.0, 2.1 |
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