SocketPermission Constructor (NetworkAccess, TransportType, String, Int32)
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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)

'Declaration
Public Sub New ( _
	access As NetworkAccess, _
	transport As TransportType, _
	hostName As String, _
	portNumber As Integer _
)

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 Nothing.

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>        

        Dim socketPermission1 As New SocketPermission(PermissionState.Unrestricted)

        'Create a 'SocketPermission' object for two ip addresses.
        Dim socketPermission2 As New SocketPermission(PermissionState.None)
        Dim securityElement1 As SecurityElement = socketPermission2.ToXml()
        ''SocketPermission' object for 'Connect' permission
        Dim securityElement2 As New 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.
        Dim securityElement3 As New 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.
        Dim securityElement4 As New 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(ControlChars.Cr + "Displays the result of FromXml method : " + ControlChars.Cr)
        Console.WriteLine(socketPermission2.ToString())

        '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.
        Dim socketPermission3 As New 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 : " + ControlChars.Cr)
        Console.WriteLine(socketPermission3.ToString())

        'Find the intersection between two 'SocketPermission' objects.
        socketPermission1 = CType(socketPermission2.Intersect(socketPermission3), SocketPermission)

        Console.WriteLine("Displays the result of Intersect method :" + ControlChars.Cr + " ")
        Console.WriteLine(socketPermission1.ToString())
        'Demand that the calling method have the requsite socket permission.
        socketPermission1.Demand()
' </Snippet3>


.NET Framework

Supported in: 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

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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