SocketPermission 构造函数
定义
初始化 SocketPermission 类的新实例。Initializes a new instance of the SocketPermission class.
重载
| SocketPermission(PermissionState) |
初始化 SocketPermission 类的新实例,该类允许对 Socket 的无限制访问或不允许对 Socket 的访问。Initializes a new instance of the SocketPermission class that allows unrestricted access to the Socket or disallows access to the Socket. |
| SocketPermission(NetworkAccess, TransportType, String, Int32) |
用指定的权限初始化给定传输地址的 SocketPermission 类的新实例。Initializes a new instance of the SocketPermission class for the given transport address with the specified permission. |
SocketPermission(PermissionState)
初始化 SocketPermission 类的新实例,该类允许对 Socket 的无限制访问或不允许对 Socket 的访问。Initializes a new instance of the SocketPermission class that allows unrestricted access to the Socket or disallows access to the Socket.
public:
SocketPermission(System::Security::Permissions::PermissionState state);
public SocketPermission (System.Security.Permissions.PermissionState state);
new System.Net.SocketPermission : System.Security.Permissions.PermissionState -> System.Net.SocketPermission
Public Sub New (state As PermissionState)
参数
- state
- PermissionState
PermissionState 值之一。One of the PermissionState values.
示例
下面的示例 SocketPermission 使用 PermissionState 枚举值创建一个。The following example creates a SocketPermission using a PermissionState enumerated value.
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();
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();
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()
注解
如果 SocketPermission 创建的实例的 Unrestricted 值来自, PermissionState 则实例将 SocketPermission 传递所有需求。If the SocketPermission instance is created with the Unrestricted value from PermissionState then the SocketPermission instance passes all demands. 如果实例中的任何其他值 state 导致 SocketPermission 失败,则所有请求都将失败,除非添加了传输地址权限 AddPermission 。Any other value for state results in a SocketPermission instance that fails all demands unless a transport address permission is added with AddPermission.
适用于
SocketPermission(NetworkAccess, TransportType, String, Int32)
用指定的权限初始化给定传输地址的 SocketPermission 类的新实例。Initializes a new instance of the SocketPermission class for the given transport address with the specified permission.
public:
SocketPermission(System::Net::NetworkAccess access, System::Net::TransportType transport, System::String ^ hostName, int portNumber);
public SocketPermission (System.Net.NetworkAccess access, System.Net.TransportType transport, string hostName, int portNumber);
new System.Net.SocketPermission : System.Net.NetworkAccess * System.Net.TransportType * string * int -> System.Net.SocketPermission
Public Sub New (access As NetworkAccess, transport As TransportType, hostName As String, portNumber As Integer)
参数
- access
- NetworkAccess
NetworkAccess 值之一。One of the NetworkAccess values.
- transport
- TransportType
TransportType 值之一。One of the TransportType values.
- hostName
- String
该传输地址的主机名。The host name for the transport address.
- portNumber
- Int32
该传输地址的端口号。The port number for the transport address.
例外
hostName 为 null。hostName is null.
示例
下面的示例 SocketPermission 使用 NetworkAccess 枚举值、 TransportType 枚举值、主机名和端口号创建一个。The following example creates a SocketPermission using a NetworkAccess enumerated value, a TransportType enumerated value, the hostname, and the port number.
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();
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();
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()
注解
此构造函数创建一个 SocketPermission ,它 hostName 使用指定的来控制对指定和的访问 portNumber transport 。This constructor creates a SocketPermission that controls access to the specified hostName and portNumber using the specified transport.
hostName可以是 DNS 名称、ip 地址或指定的 ip 子网,例如 192.168.1. *。The hostName can be a DNS name, an IP address, or a specified IP subnet, such as 192.168.1.*.
portNumber可以是由传输定义的任何有效端口号,也可以是 SocketPermission.AllPorts 。The portNumber can be any valid port number defined by the transport, or SocketPermission.AllPorts.