SocketPermission Constructor (NetworkAccess, TransportType, String, Int32)
.NET Framework 3.5
Initializes a new instance of the SocketPermission class for the given transport address with the specified permission.
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.
| Exception | Condition |
|---|---|
| ArgumentNullException | hostName is null. |
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.
SocketPermission socketPermission1 = new SocketPermission(PermissionState.Unrestricted); // Create a 'SocketPermission' object for two ip addresses. SocketPermission socketPermission2 = new SocketPermission(PermissionState.None); SecurityElement securityElement1 = socketPermission2.ToXml(); // 'SocketPermission' object for 'Connect' permission SecurityElement securityElement2 = 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. SecurityElement securityElement3 = 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. SecurityElement securityElement4 = 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("\nDisplays the result of FromXml method : \n"); 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. SocketPermission socketPermission3 = 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 : \n"); Console.WriteLine(socketPermission3.ToString()); // Find the intersection between two 'SocketPermission' objects. socketPermission1 = (SocketPermission)socketPermission2.Intersect(socketPermission3); Console.WriteLine("Displays the result of Intersect method :\n "); Console.WriteLine(socketPermission1.ToString()); // Demand that the calling method have the requsite socket permission. socketPermission1.Demand();
SocketPermission* socketPermission1 = new SocketPermission(PermissionState::Unrestricted); // Create a 'SocketPermission' Object* for two ip addresses. SocketPermission* socketPermission2 = new SocketPermission(PermissionState::None); SecurityElement* securityElement1 = socketPermission2->ToXml(); // 'SocketPermission' Object* for 'Connect' permission SecurityElement* securityElement2 = new SecurityElement(S"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 = new SecurityElement(S"URI", S"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 = new SecurityElement(S"URI", S"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(S"\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 = new SocketPermission(NetworkAccess::Connect, TransportType::All, S"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, S"192.168.144.239", SocketPermission::AllPorts); Console::WriteLine(S"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(S"Displays the result of Intersect method :\n "); Console::WriteLine(socketPermission1); // Demand that the calling method have the requsite socket permission. socketPermission1->Demand();
Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98
The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
