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SocketPermission Constructor (NetworkAccess, TransportType, String, Int32)

Initializes a new instance of the SocketPermission class for the given transport address with the specified permission.

Namespace:  System.Net
Assembly:  System (in System.dll)

public:
SocketPermission(
	NetworkAccess access, 
	TransportType transport, 
	String^ hostName, 
	int portNumber
)

Parameters

access
Type: System.Net::NetworkAccess

One of the NetworkAccess values.

transport
Type: System.Net::TransportType

One of the TransportType values.

hostName
Type: System::String

The host name for the transport address.

portNumber
Type: System::Int32

The port number for the transport address.

ExceptionCondition
ArgumentNullException

hostName is nullptr.

This constructor creates a SocketPermission that controls access to the specified hostName and portNumber using the specified transport.

The hostName can be a DNS name, an IP address, or a specified IP subnet, such as 192.168.1.*.

The portNumber can be any valid port number defined by the transport, or SocketPermission::AllPorts.

The following example creates a SocketPermission using a NetworkAccess enumerated value, a TransportType enumerated value, the hostname, and the port number.

// <Snippet6>
      SocketPermission^ socketPermission1 = gcnew SocketPermission( PermissionState::Unrestricted );

      // Create a 'SocketPermission' Object* for two ip addresses.
      SocketPermission^ socketPermission2 = gcnew SocketPermission( PermissionState::None );
      SecurityElement^ securityElement1 = socketPermission2->ToXml();
      // 'SocketPermission' Object* for 'Connect' permission
      SecurityElement^ securityElement2 = gcnew SecurityElement( "ConnectAccess" );
      // Format to specify ip address are <ip-address>#<port>#<transport-type> 
      // First 'SocketPermission' ip-address is '192.168.144.238' for 'All' transport types and 
      // for 'All'ports for the ip-address.
      SecurityElement^ securityElement3 = gcnew SecurityElement( "URI","192.168.144.238#-1#3" );
      // Second 'SocketPermission' ip-address is '192.168.144.240' for 'All' transport types and 
      // for 'All' ports for the ip-address.
      SecurityElement^ securityElement4 = gcnew SecurityElement( "URI","192.168.144.240#-1#3" );
      securityElement2->AddChild( securityElement3 );
      securityElement2->AddChild( securityElement4 );
      securityElement1->AddChild( securityElement2 );

      // Obtain a 'SocketPermission' Object* using 'FromXml' method.
      socketPermission2->FromXml( securityElement1 );

      Console::WriteLine( "\nDisplays the result of FromXml method : \n" );
      Console::WriteLine( socketPermission2 );

      // Create another 'SocketPermission' Object* with two ip addresses. 
      // First 'SocketPermission' ip-address is '192.168.144.238' for 'All' transport types and for 'All' ports for the ip-address.
      SocketPermission^ socketPermission3 =
         gcnew SocketPermission( NetworkAccess::Connect,
            TransportType::All,
            "192.168.144.238",
            SocketPermission::AllPorts );

      // Second 'SocketPermission' ip-address is '192.168.144.239' for 'All' transport types and for 'All' ports for the ip-address.
      socketPermission3->AddPermission( NetworkAccess::Connect,
         TransportType::All,
         "192.168.144.239",
         SocketPermission::AllPorts );

      Console::WriteLine( "Displays the result of AddPermission method : \n" );
      Console::WriteLine( socketPermission3 );

      // Find the intersection between two 'SocketPermission' objects.
      socketPermission1 = dynamic_cast<SocketPermission^>(socketPermission2->Intersect( socketPermission3 ));

      Console::WriteLine( "Displays the result of Intersect method :\n " );
      Console::WriteLine( socketPermission1 );

      // Demand that the calling method have the requsite socket permission.
      socketPermission1->Demand();
// </Snippet3>

.NET Framework

Supported in: 4.5.2, 4.5.1, 4.5, 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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