IPAddress クラス
アセンブリ: System (system.dll 内)
構文
解説
使用例
サーバーに問い合わせて、ファミリ アドレスおよびそのサーバーがサポートする IP アドレスを取得する方法を次の例に示します。
' This program shows how to use the IPAddress class to obtain a server ' IP addressess and related information. Imports System Imports System.Net Imports System.Net.Sockets Imports System.Text.RegularExpressions Imports Microsoft.VisualBasic Namespace Mssc.Services.ConnectionManagement Module M_TestIPAddress Class TestIPAddress 'The IPAddresses method obtains the selected server IP address information. 'It then displays the type of address family supported by the server and 'its IP address in standard and byte format. Private Shared Sub IPAddresses(ByVal server As String) Try Dim ASCII As New System.Text.ASCIIEncoding() ' Get server related information. Dim heserver As IPHostEntry = Dns.Resolve(server) ' Loop on the AddressList Dim curAdd As IPAddress For Each curAdd In heserver.AddressList ' Display the type of address family supported by the server. If the ' server is IPv6-enabled this value is: InternNetworkV6. If the server ' is also IPv4-enabled there will be an additional value of InterNetwork. Console.WriteLine(("AddressFamily: " + curAdd.AddressFamily.ToString())) ' Display the ScopeId property in case of IPV6 addresses. If curAdd.AddressFamily.ToString() = ProtocolFamily.InterNetworkV6.ToString() Then Console.WriteLine(("Scope Id: " + curAdd.ScopeId.ToString())) End If ' Display the server IP address in the standard format. In ' IPv4 the format will be dotted-quad notation, in IPv6 it will be ' in in colon-hexadecimal notation. Console.WriteLine(("Address: " + curAdd.ToString())) ' Display the server IP address in byte format. Console.Write("AddressBytes: ") Dim bytes As [Byte]() = curAdd.GetAddressBytes() Dim i As Integer For i = 0 To bytes.Length - 1 Console.Write(bytes(i)) Next i Console.WriteLine(ControlChars.Cr + ControlChars.Lf) Next curAdd Catch e As Exception Console.WriteLine(("[DoResolve] Exception: " + e.ToString())) End Try End Sub 'IPAddresses ' This IPAddressAdditionalInfo displays additional server address information. Private Shared Sub IPAddressAdditionalInfo() Try ' Display the flags that show if the server supports IPv4 or IPv6 ' address schemas. Console.WriteLine((ControlChars.Cr + ControlChars.Lf + "SupportsIPv4: " + Socket.SupportsIPv4.ToString())) Console.WriteLine(("SupportsIPv6: " + Socket.SupportsIPv6.ToString())) If Socket.SupportsIPv6 Then ' Display the server Any address. This IP address indicates that the server ' should listen for client activity on all network interfaces. Console.WriteLine((ControlChars.Cr + ControlChars.Lf + "IPv6Any: " + IPAddress.IPv6Any.ToString())) ' Display the server loopback address. Console.WriteLine(("IPv6Loopback: " + IPAddress.IPv6Loopback.ToString())) ' Used during autoconfiguration first phase. Console.WriteLine(("IPv6None: " + IPAddress.IPv6None.ToString())) Console.WriteLine(("IsLoopback(IPv6Loopback): " + IPAddress.IsLoopback(IPAddress.IPv6Loopback).ToString())) End If Console.WriteLine(("IsLoopback(Loopback): " + IPAddress.IsLoopback(IPAddress.Loopback).ToString())) Catch e As Exception Console.WriteLine(("[IPAddresses] Exception: " + e.ToString())) End Try End Sub 'IPAddressAdditionalInfo Public Shared Sub Main(ByVal args() As String) Dim server As String = Nothing ' Define a regular expression to parse user's input. ' This is a security check. It allows only ' alphanumeric input string between 2 to 40 character long. 'Define a regular expression to parse user's input. 'This is a security check. It allows only 'alphanumeric input string between 2 to 40 character long. Dim rex As New Regex("^[a-zA-Z]\w{1 ,39}$") If args.Length < 1 Then ' If no server name is passed as an argument to this program, use the current ' server name as default. server = Dns.GetHostName() Console.WriteLine(("Using current host: " + server)) Else server = args(0) If Not rex.Match(server).Success Then Console.WriteLine("Input string format not allowed.") Return End If End If ' Get the list of the addresses associated with the requested server. IPAddresses(server) ' Get additonal address information. IPAddressAdditionalInfo() End Sub 'Main End Class 'TestIPAddress End Module End Namespace
// This program shows how to use the IPAddress class to obtain a server // IP addressess and related information. using System; using System.Net; using System.Net.Sockets; using System.Text.RegularExpressions; namespace Mssc.Services.ConnectionManagement { class TestIPAddress { /** * The IPAddresses method obtains the selected server IP address information. * It then displays the type of address family supported by the server and its * IP address in standard and byte format. **/ private static void IPAddresses(string server) { try { System.Text.ASCIIEncoding ASCII = new System.Text.ASCIIEncoding(); // Get server related information. IPHostEntry heserver = Dns.Resolve(server); // Loop on the AddressList foreach (IPAddress curAdd in heserver.AddressList) { // Display the type of address family supported by the server. If the // server is IPv6-enabled this value is: InternNetworkV6. If the server // is also IPv4-enabled there will be an additional value of InterNetwork. Console.WriteLine("AddressFamily: " + curAdd.AddressFamily.ToString()); // Display the ScopeId property in case of IPV6 addresses. if(curAdd.AddressFamily.ToString() == ProtocolFamily.InterNetworkV6.ToString()) Console.WriteLine("Scope Id: " + curAdd.ScopeId.ToString()); // Display the server IP address in the standard format. In // IPv4 the format will be dotted-quad notation, in IPv6 it will be // in in colon-hexadecimal notation. Console.WriteLine("Address: " + curAdd.ToString()); // Display the server IP address in byte format. Console.Write("AddressBytes: "); Byte[] bytes = curAdd.GetAddressBytes(); for (int i = 0; i < bytes.Length; i++) { Console.Write(bytes[i]); } Console.WriteLine("\r\n"); } } catch (Exception e) { Console.WriteLine("[DoResolve] Exception: " + e.ToString()); } } // This IPAddressAdditionalInfo displays additional server address information. private static void IPAddressAdditionalInfo() { try { // Display the flags that show if the server supports IPv4 or IPv6 // address schemas. Console.WriteLine("\r\nSupportsIPv4: " + Socket.SupportsIPv4); Console.WriteLine("SupportsIPv6: " + Socket.SupportsIPv6); if (Socket.SupportsIPv6) { // Display the server Any address. This IP address indicates that the server // should listen for client activity on all network interfaces. Console.WriteLine("\r\nIPv6Any: " + IPAddress.IPv6Any.ToString()); // Display the server loopback address. Console.WriteLine("IPv6Loopback: " + IPAddress.IPv6Loopback.ToString()); // Used during autoconfiguration first phase. Console.WriteLine("IPv6None: " + IPAddress.IPv6None.ToString()); Console.WriteLine("IsLoopback(IPv6Loopback): " + IPAddress.IsLoopback(IPAddress.IPv6Loopback)); } Console.WriteLine("IsLoopback(Loopback): " + IPAddress.IsLoopback(IPAddress.Loopback)); } catch (Exception e) { Console.WriteLine("[IPAddresses] Exception: " + e.ToString()); } } public static void Main(string[] args) { string server = null; // Define a regular expression to parse user's input. // This is a security check. It allows only // alphanumeric input string between 2 to 40 character long. Regex rex = new Regex(@"^[a-zA-Z]\w{1,39}$"); if (args.Length < 1) { // If no server name is passed as an argument to this program, use the current // server name as default. server = Dns.GetHostName(); Console.WriteLine("Using current host: " + server); } else { server = args[0]; if (!(rex.Match(server)).Success) { Console.WriteLine("Input string format not allowed."); return; } } // Get the list of the addresses associated with the requested server. IPAddresses(server); // Get additonal address information. IPAddressAdditionalInfo(); } } }
// This program shows how to use the IPAddress class to obtain a server // IP addressess and related information. import System.*; import System.Net.*; import System.Net.Sockets.*; import System.Text.RegularExpressions.*; class TestIPAddress { /** The IPAddresses method obtains the selected server IP address information.It then displays the type of address family supported by the server and its IP address in standard and byte format. */ private static void IPAddresses(String server) { try { System.Text.ASCIIEncoding ascii = new System.Text.ASCIIEncoding(); // Get server related information. IPHostEntry heserver = Dns.Resolve(server); // Loop on the AddressList for (int iCtr = 0; iCtr < heserver.get_AddressList().length; iCtr++) { IPAddress curAdd = heserver.get_AddressList()[iCtr]; // Display the type of address family supported by the server. // If the server is IPv6-enabled this value is:InternNetworkV6. // If the server is also IPv4-enabled there will be an // additional value of InterNetwork. Console.WriteLine(("AddressFamily: " + curAdd.get_AddressFamily().ToString())); // Display the ScopeId property in case of IPV6 addresses. if (curAdd.get_AddressFamily().ToString().equals( ProtocolFamily.InterNetworkV6.ToString())) { Console.WriteLine(("Scope Id: " +(new Long(curAdd.get_ScopeId())).ToString())); } // Display the server IP address in the standard format. In // IPv4 the format will be dotted-quad notation, in IPv6 // it will be in in colon-hexadecimal notation. Console.WriteLine(("Address: " + curAdd.ToString())); // Display the server IP address in byte format. Console.Write("AddressBytes: "); ubyte bytes[] = curAdd.GetAddressBytes(); for (int i = 0; i < bytes.length; i++) { Console.Write(bytes[i]); } Console.WriteLine("\r\n"); } } catch (System.Exception e) { Console.WriteLine(("[DoResolve] Exception: " + e.ToString())); } } //IPAddresses // This IPAddressAdditionalInfo displays additional server address // information. private static void IPAddressAdditionalInfo() { try { // Display the flags that show if the server supports IPv4 or IPv6 // address schemas. Console.WriteLine("\r\nSupportsIPv4: " + System.Convert.ToString(Socket.get_SupportsIPv4())); Console.WriteLine("SupportsIPv6: " + System.Convert.ToString(Socket.get_SupportsIPv6())); if (Socket.get_SupportsIPv6()) { // Display the server Any address. This IP address indicates // that the server should listen for client activity on all // network interfaces. Console.WriteLine(("\r\nIPv6Any: " + (IPAddress.IPv6Any).ToString())); // Display the server loopback address. Console.WriteLine(("IPv6Loopback: " + (IPAddress.IPv6Loopback).ToString())); // Used during autoconfiguration first phase. Console.WriteLine(("IPv6None: " + (IPAddress.IPv6None).ToString())); Console.WriteLine(("IsLoopback(IPv6Loopback): " + IPAddress.IsLoopback(IPAddress.IPv6Loopback))); } Console.WriteLine(("IsLoopback(Loopback): " + System.Convert.ToString(IPAddress. IsLoopback(IPAddress.Loopback)))); } catch (System.Exception e) { Console.WriteLine(("[IPAddresses] Exception: " + e.ToString())); } } //IPAddressAdditionalInfo public static void main(String[] args) { String server = null; // Define a regular expression to parse user's input. // This is a security check. It allows only // alphanumeric input string between 2 to 40 character long. Regex rex = new Regex("^[a-zA-Z]\\w{1,39}$"); if (args.length < 1) { // If no server name is passed as an argument to this program, // use the current server name as default. server = Dns.GetHostName(); Console.WriteLine(("Using current host: " + server)); } else { server = args[0]; if (!(rex.Match(server).get_Success())) { Console.WriteLine("Input string format not allowed."); return; } } // Get the list of the addresses associated with the requested server. IPAddresses(server); // Get additonal address information. IPAddressAdditionalInfo(); } //main } //TestIPAddress
System.Net.IPAddress
プラットフォーム
Windows 98, Windows 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition
開発プラットフォームの中には、.NET Framework によってサポートされていないバージョンがあります。サポートされているバージョンについては、「システム要件」を参照してください。
参照
- IPAddress クラスのページへのリンク