IP アドレスとポート番号でネットワーク エンドポイントを表します。
この型のすべてのメンバの一覧については、IPEndPoint メンバ を参照してください。
System.Object
System.Net.EndPoint
System.Net.IPEndPoint
<Serializable>
Public Class IPEndPoint Inherits EndPoint
[C#]
[Serializable]
public class IPEndPoint : EndPoint
[C++]
[Serializable]
public __gc class IPEndPoint : public EndPoint
[JScript]
public
Serializable
class IPEndPoint extends EndPoint
スレッドセーフ
この型の public static (Visual Basicでは Shared) のすべてのメンバは、マルチスレッド操作で安全に使用できます。インスタンスのメンバの場合は、スレッドセーフであるとは限りません。
解説
IPEndPoint クラスは、ホスト上のサービスに接続するためにアプリケーションが要求するホストとポートの情報を格納します。ホストの IP アドレスとサービスのポート番号を結合することにより、 IPEndPoint クラスはサービスへのコネクション ポイントを形成します。
使用例
' This example uses the IPEndPoint class and its members to display the home page
' of the server selected by the user.
Imports System
Imports System.Text
Imports System.IO
Imports System.Net
Imports System.Net.Sockets
Imports System.Text.RegularExpressions
Namespace Mssc.Services.ConnectionManagement
Module M_TestIPEndPoint
Public Class TestIPEndPoint
'The getPage method gets the server's home page content by
'recreating the server's endpoint from the original serialized endpoint.
'Then it creates a new socket and connects it to the endpoint.
Private Shared Function getPage(ByVal server As String, ByVal socketAddress As SocketAddress) As String
'Set up variables and String to write to the server.
Dim ASCII As Encoding = Encoding.ASCII
Dim [Get] As String = "GET / HTTP/1.1" + ControlChars.Cr + ControlChars.Lf + "Host: " + server + ControlChars.Cr + ControlChars.Lf + "Connection: Close" + ControlChars.Cr + ControlChars.Lf + ControlChars.Cr + ControlChars.Lf
Dim ByteGet As [Byte]() = ASCII.GetBytes([Get])
Dim RecvBytes(255) As [Byte]
Dim strRetPage As [String] = Nothing
Dim socket As Socket = Nothing
' Recreate the connection endpoint from the serialized information.
Dim endpoint As New IPEndPoint(0, 0)
Dim clonedIPEndPoint As IPEndPoint = CType(endpoint.Create(socketAddress), IPEndPoint)
Console.WriteLine(("clonedIPEndPoint: " + clonedIPEndPoint.ToString()))
Console.WriteLine("Press any key to continue.")
Console.ReadLine()
Try
' Create a socket object to establish a connection with the server.
socket = New Socket(endpoint.AddressFamily, SocketType.Stream, ProtocolType.Tcp)
' Connect to the cloned end point.
socket.Connect(clonedIPEndPoint)
Catch e As SocketException
Console.WriteLine(("Source : " + e.Source))
Console.WriteLine(("Message : " + e.Message))
Catch e As Exception
Console.WriteLine(("Source : " + e.Source))
Console.WriteLine(("Message : " + e.Message))
End Try
If socket Is Nothing Then
Return "Connection to cloned endpoint failed"
End If
' Send request to the server.
socket.Send(ByteGet, ByteGet.Length, 0)
' Receive the server home page content.
Dim bytes As Int32 = socket.Receive(RecvBytes, RecvBytes.Length, 0)
' Read the first 256 bytes.
strRetPage = "Default HTML page on " + server + ":" + ControlChars.Cr + ControlChars.Lf
strRetPage = strRetPage + ASCII.GetString(RecvBytes, 0, bytes)
While bytes > 0
bytes = socket.Receive(RecvBytes, RecvBytes.Length, 0)
strRetPage = strRetPage + ASCII.GetString(RecvBytes, 0, bytes)
End While
socket.Close()
Return strRetPage
End Function 'getPage
' The serializeEndpoint method serializes the endpoint and returns the
' SocketAddress containing the serialized endpoint data.
Private Shared Function serializeEndpoint(ByVal endpoint As IPEndPoint) As SocketAddress
' Serialize IPEndPoint details to a SocketAddress instance.
Dim socketAddress As SocketAddress = endpoint.Serialize()
' Display the serialized endpoint information.
Console.WriteLine("Endpoint Serialize() : " + socketAddress.ToString())
Console.WriteLine("Socket Family : " + socketAddress.Family.ToString())
Console.WriteLine("Socket Size : " + socketAddress.ToString())
Console.WriteLine("Press any key to continue.")
Console.ReadLine()
Return socketAddress
End Function 'serializeEndpoint
Private Shared Sub displayEndpointInfo(ByVal endpoint As IPEndPoint)
Console.WriteLine("Endpoint Address : " + endpoint.Address.ToString())
Console.WriteLine("Endpoint AddressFamily : " + endpoint.AddressFamily.ToString())
Console.WriteLine("Endpoint Port : " + endpoint.Port.ToString())
Console.WriteLine("Endpoint ToString() : " + endpoint.ToString())
Console.WriteLine("Press any key to continue.")
Console.ReadLine()
End Sub 'displayEndpointInfo
' The following method determines the server endpoint and then
' serializes it to obtain the related SocketAddress object.
' Note that in the for loop a temporary socket is created to ensure that
' the current IP address format matches the AddressFamily type.
' In fact, in the case of servers supporting both IPv4 and IPv6, an exception
' may arise if an IP address format does not match the address family type.
Private Shared Function getSocketAddress(ByVal server As String, ByVal port As Integer) As SocketAddress
Dim tempSocket As Socket = Nothing
Dim host As IPHostEntry = Nothing
Dim serializedSocketAddress As SocketAddress = Nothing
Try
' Get the object containing Internet host information.
host = Dns.Resolve(server)
' Obtain the IP address from the list of IP addresses associated with the server.
Dim address As IPAddress
For Each address In host.AddressList
Dim endpoint As New IPEndPoint(address, port)
tempSocket = New Socket(endpoint.AddressFamily, SocketType.Stream, ProtocolType.Tcp)
tempSocket.Connect(endpoint)
If tempSocket.Connected Then
' Display the endpoint information.
displayEndpointInfo(endpoint)
' Serialize the endpoint to obtain a SocketAddress object.
serializedSocketAddress = serializeEndpoint(endpoint)
Exit For
End If
Next address
'Close the temporary socket.
tempSocket.Close()
Catch e As SocketException
Console.WriteLine(("Source : " + e.Source))
Console.WriteLine(("Message : " + e.Message))
Catch e As Exception
Console.WriteLine(("Source : " + e.Source))
Console.WriteLine(("Message : " + e.Message))
End Try
Return serializedSocketAddress
End Function 'getSocketAddress
' The requestServerHomePage obtains the server's home page and returns
' its content.
Private Shared Function requestServerHomePage(ByVal server As String, ByVal port As Integer) As String
Dim strRetPage As [String] = Nothing
' Get a socket address using the specified server and port.
Dim socketAddress As SocketAddress = getSocketAddress(server, port)
If socketAddress Is Nothing Then
strRetPage = "Connection failed"
' Obtain the server's home page content.
Else
strRetPage = getPage(server, socketAddress)
End If
Return strRetPage
End Function 'requestServerHomePage
' Show to the user how to use this program when wrong input parameters are entered.
Private Shared Sub showusage()
Console.WriteLine("Enter the server name as follows:")
Console.WriteLine(ControlChars.Tab + "vb_ipendpoint servername")
End Sub 'showusage
' This is the program entry point. It allows the user to enter
' a server name that is used to locate its current homepage.
Public Shared Sub Main(ByVal args() As String)
Dim host As String = Nothing
Dim port As Integer = 80
'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 = 0 Then
' Show how to use this program.
showusage()
Else
host = args(0)
If ((rex.Match(host)).Success) Then
' Get the specified server home_page and display its content.
Dim result As String = requestServerHomePage(host, port)
Console.WriteLine(result)
Else
Console.WriteLine("Input string format not allowed.")
End If
End If
End Sub 'Main
End Class 'TestIPEndPoint
End Module
End Namespace
[C#]
// This example uses the IPEndPoint class and its members to display the home page
// of the server selected by the user.
using System;
using System.Text;
using System.IO;
using System.Net;
using System.Net.Sockets;
using System.Text.RegularExpressions;
namespace Mssc.Services.ConnectionManagement
{
public class TestIPEndPoint
{
// The getPage method gets the server's home page content by
// recreating the server's endpoint from the original serialized endpoint.
// Then it creates a new socket and connects it to the endpoint.
private static string getPage(string server, SocketAddress socketAddress)
{
//Set up variables and string to write to the server.
Encoding ASCII = Encoding.ASCII;
string Get = "GET / HTTP/1.1\r\nHost: " + server +
"\r\nConnection: Close\r\n\r\n";
Byte[] ByteGet = ASCII.GetBytes(Get);
Byte[] RecvBytes = new Byte[256];
String strRetPage = null;
Socket socket = null;
// Recreate the connection endpoint from the serialized information.
IPEndPoint endpoint = new IPEndPoint(0,0);
IPEndPoint clonedIPEndPoint = (IPEndPoint) endpoint.Create(socketAddress);
Console.WriteLine("clonedIPEndPoint: " + clonedIPEndPoint.ToString());
Console.WriteLine("Press any key to continue.");
Console.ReadLine();
try
{
// Create a socket object to establish a connection with the server.
socket =
new Socket(endpoint.AddressFamily, SocketType.Stream, ProtocolType.Tcp);
// Connect to the cloned end point.
socket.Connect(clonedIPEndPoint);
}
catch(SocketException e)
{
Console.WriteLine("Source : " + e.Source);
Console.WriteLine("Message : " + e.Message);
}
catch(Exception e)
{
Console.WriteLine("Source : " + e.Source);
Console.WriteLine("Message : " + e.Message);
}
if (socket == null)
return ("Connection to cloned endpoint failed");
// Send request to the server.
socket.Send(ByteGet, ByteGet.Length, 0);
// Receive the server home page content.
Int32 bytes = socket.Receive(RecvBytes, RecvBytes.Length, 0);
// Read the first 256 bytes.
strRetPage = "Default HTML page on " + server + ":\r\n";
strRetPage = strRetPage + ASCII.GetString(RecvBytes, 0, bytes);
while (bytes > 0)
{
bytes = socket.Receive(RecvBytes, RecvBytes.Length, 0);
strRetPage = strRetPage + ASCII.GetString(RecvBytes, 0, bytes);
}
socket.Close();
return strRetPage;
}
// The serializeEndpoint method serializes the endpoint and returns the
// SocketAddress containing the serialized endpoint data.
private static SocketAddress serializeEndpoint(IPEndPoint endpoint)
{
// Serialize IPEndPoint details to a SocketAddress instance.
SocketAddress socketAddress = endpoint.Serialize();
// Display the serialized endpoint information.
Console.WriteLine("Endpoint.Serialize() : " + socketAddress.ToString());
Console.WriteLine("Socket.Family : " + socketAddress.Family);
Console.WriteLine("Socket.Size : " + socketAddress.Size);
Console.WriteLine("Press any key to continue.");
Console.ReadLine();
return socketAddress;
}
private static void displayEndpointInfo(IPEndPoint endpoint)
{
Console.WriteLine("Endpoint.Address : " + endpoint.Address);
Console.WriteLine("Endpoint.AddressFamily : " + endpoint.AddressFamily);
Console.WriteLine("Endpoint.Port : " + endpoint.Port);
Console.WriteLine("Endpoint.ToString() : " + endpoint.ToString());
Console.WriteLine("Press any key to continue.");
Console.ReadLine();
}
// The serializeEndpoint method determines the server endpoint and then
// serializes it to obtain the related SocketAddress object.
// Note that in the for loop a temporary socket is created to ensure that
// the current IP address format matches the AddressFamily type.
// In fact, in the case of servers supporting both IPv4 and IPv6, an exception
// may arise if an IP address format does not match the address family type.
private static SocketAddress getSocketAddress(string server, int port)
{
Socket tempSocket = null;
IPHostEntry host = null;
SocketAddress serializedSocketAddress = null;
try
{
// Get the object containing Internet host information.
host = Dns.Resolve(server);
// Obtain the IP address from the list of IP addresses associated with the server.
foreach(IPAddress address in host.AddressList)
{
IPEndPoint endpoint = new IPEndPoint(address, port);
tempSocket =
new Socket(endpoint.AddressFamily, SocketType.Stream, ProtocolType.Tcp);
tempSocket.Connect(endpoint);
if(tempSocket.Connected)
{
// Display the endpoint information.
displayEndpointInfo(endpoint);
// Serialize the endpoint to obtain a SocketAddress object.
serializedSocketAddress = serializeEndpoint(endpoint);
break;
}
else
continue;
}
// Close the temporary socket.
tempSocket.Close();
}
catch(SocketException e)
{
Console.WriteLine("Source : " + e.Source);
Console.WriteLine("Message : " + e.Message);
}
catch(Exception e)
{
Console.WriteLine("Source : " + e.Source);
Console.WriteLine("Message : " + e.Message);
}
return serializedSocketAddress;
}
// The requestServerHomePage method obtains the server's home page and returns
// its content.
private static string requestServerHomePage(string server, int port)
{
String strRetPage = null;
// Get a socket address using the specified server and port.
SocketAddress socketAddress = getSocketAddress(server, port);
if (socketAddress == null)
strRetPage = "Connection failed";
else
// Obtain the server's home page content.
strRetPage = getPage(server, socketAddress);
return strRetPage;
}
// Show to the user how to use this program when wrong input parameters are entered.
private static void showUsage()
{
Console.WriteLine("Enter the server name as follows:");
Console.WriteLine("\tcs_ipendpoint servername");
}
// This is the program entry point. It allows the user to enter
// a server name that is used to locate its current homepage.
public static void Main(string[] args)
{
string host= null;
int port = 80;
// 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)
showUsage();
else
{
string message = args[0];
if ((rex.Match(message)).Success)
{
host = args[0];
// Get the specified server home_page and display its content.
string result = requestServerHomePage(host, port);
Console.WriteLine(result);
}
else
Console.WriteLine("Input string format not allowed.");
}
}
}
}
[C++]
// This example uses the IPEndPoint class and its members to display the home page
// of the server selected by the user.
#using <mscorlib.dll>
#using <System.dll>
using namespace System;
using namespace System::Text;
using namespace System::IO;
using namespace System::Net;
using namespace System::Net::Sockets;
using namespace System::Text::RegularExpressions;
// The getPage function gets the server's home page content by
// recreating the server's endpoint from the original serialized endpoint.
// Then it creates a new socket and connects it to the endpoint.
String* getPage(String* server, SocketAddress* socketAddress)
{
//Set up variables and string to write to the server.
Encoding* ASCII = Encoding::ASCII;
String* Get = String::Format( S"GET / HTTP/1.1\r\nHost: {0}\r\nConnection: Close\r\n\r\n", server );
Byte ByteGet[] = ASCII->GetBytes(Get);
Byte RecvBytes[] = new Byte[256];
String* strRetPage = 0;
Socket* socket = 0;
// Recreate the connection endpoint from the serialized information.
IPEndPoint* endpoint = new IPEndPoint((__int64)0,0);
IPEndPoint* clonedIPEndPoint = dynamic_cast<IPEndPoint*> (endpoint->Create(socketAddress));
Console::WriteLine(S"clonedIPEndPoint: {0}", clonedIPEndPoint);
Console::WriteLine(S"Press any key to continue.");
Console::ReadLine();
try
{
// Create a socket object to establish a connection with the server.
socket =
new Socket(endpoint->AddressFamily, SocketType::Stream, ProtocolType::Tcp);
// Connect to the cloned end point.
socket->Connect(clonedIPEndPoint);
}
catch(SocketException* e)
{
Console::WriteLine(S"Source : {0}", e->Source);
Console::WriteLine(S"Message : {0}", e->Message);
}
catch(Exception* e)
{
Console::WriteLine(S"Source : {0}", e->Source);
Console::WriteLine(S"Message : {0}", e->Message);
}
if (socket == 0)
return (S"Connection to cloned endpoint failed");
// Send request to the server.
socket->Send(ByteGet, ByteGet->Length,static_cast<SocketFlags>(0));
// Receive the server home page content.
Int32 bytes = socket->Receive(RecvBytes, RecvBytes->Length,static_cast<SocketFlags>(0));
// Read the first 256 bytes.
strRetPage = String::Format( S"Default HTML page on {0}:\r\n", server );
strRetPage = String::Concat( strRetPage, ASCII->GetString(RecvBytes, 0, bytes) );
while (bytes > 0)
{
bytes = socket->Receive(RecvBytes, RecvBytes->Length,static_cast<SocketFlags>(0));
strRetPage = String::Concat( strRetPage, ASCII->GetString(RecvBytes, 0, bytes) );
}
socket->Close();
return strRetPage;
}
// The serializeEndpoint function serializes the endpoint and returns the
// SocketAddress containing the serialized endpoint data.
SocketAddress* serializeEndpoint(IPEndPoint* endpoint)
{
// Serialize IPEndPoint details to a SocketAddress instance.
SocketAddress* socketAddress = endpoint->Serialize();
// Display the serialized endpoint information.
Console::WriteLine(S"Endpoint.Serialize() : {0}", socketAddress);
Console::WriteLine(S"Socket->Family : {0}", __box(socketAddress->Family));
Console::WriteLine(S"Socket->Size : {0}", __box(socketAddress->Size));
Console::WriteLine(S"Press any key to continue.");
Console::ReadLine();
return socketAddress;
}
void displayEndpointInfo(IPEndPoint* endpoint)
{
Console::WriteLine(S"Endpoint->Address : {0}", endpoint->Address);
Console::WriteLine(S"Endpoint->AddressFamily : {0}", __box(endpoint->AddressFamily));
Console::WriteLine(S"Endpoint->Port : {0}", __box(endpoint->Port));
Console::WriteLine(S"Endpoint.ToString() : {0}", endpoint);
Console::WriteLine(S"Press any key to continue.");
Console::ReadLine();
}
// The serializeEndpoint function determines the server endpoint and then
// serializes it to obtain the related SocketAddress object.
// Note that in the for loop a temporary socket is created to ensure that
// the current IP address format matches the AddressFamily type.
// In fact, in the case of servers supporting both IPv4 and IPv6, an exception
// may arise if an IP address format does not match the address family type.
SocketAddress* getSocketAddress(String* server, int port)
{
Socket* tempSocket = 0;
IPHostEntry* host = 0;
SocketAddress* serializedSocketAddress = 0;
try
{
// Get the object containing Internet host information.
host = Dns::Resolve(server);
// Obtain the IP address from the list of IP addresses associated with the server.
System::Collections::IEnumerator* myEnum = host->AddressList->GetEnumerator();
while (myEnum->MoveNext())
{
IPAddress* address = __try_cast<IPAddress*>(myEnum->Current);
IPEndPoint* endpoint = new IPEndPoint(address, port);
tempSocket =
new Socket(endpoint->AddressFamily, SocketType::Stream, ProtocolType::Tcp);
tempSocket->Connect(endpoint);
if(tempSocket->Connected)
{
// Display the endpoint information.
displayEndpointInfo(endpoint);
// Serialize the endpoint to obtain a SocketAddress object.
serializedSocketAddress = serializeEndpoint(endpoint);
break;
}
else
continue;
}
// Close the temporary socket.
tempSocket->Close();
}
catch(SocketException* e)
{
Console::WriteLine(S"Source : {0}", e->Source);
Console::WriteLine(S"Message : {0}", e->Message);
}
catch(Exception* e)
{
Console::WriteLine(S"Source : {0}", e->Source);
Console::WriteLine(S"Message : {0}", e->Message);
}
return serializedSocketAddress;
}
// The requestServerHomePage function obtains the server's home page and returns
// its content.
String* requestServerHomePage(String* server, int port)
{
String* strRetPage = 0;
// Get a socket address using the specified server and port.
SocketAddress* socketAddress = getSocketAddress(server, port);
if (socketAddress == 0)
strRetPage = S"Connection failed";
else
// Obtain the server's home page content.
strRetPage = getPage(server, socketAddress);
return strRetPage;
}
// Show to the user how to use this program when wrong input parameters are entered.
void showUsage()
{
Console::WriteLine(S"Enter the server name as follows:");
Console::WriteLine(S"\tcs_ipendpoint servername");
}
// This is the program entry point. It allows the user to enter
// a server name that is used to locate its current homepage.
int main()
{
String* args[] = Environment::GetCommandLineArgs();
String* host= 0;
int port = 80;
// 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(S"^[a-zA-Z]\\w{1,39}$");
if (args->Length < 2)
showUsage();
else
{
String* message = args[1];
if ((rex->Match(message))->Success)
{
host = args[1];
// Get the specified server home_page and display its content.
String* result = requestServerHomePage(host, port);
Console::WriteLine(result);
}
else
Console::WriteLine(S"Input string format not allowed.");
}
}
[JScript] JScript のサンプルはありません。Visual Basic、C#、および C++ のサンプルを表示するには、このページの左上隅にある言語のフィルタ ボタン .gif)
をクリックします。
必要条件
名前空間: System.Net
プラットフォーム: Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 ファミリ, .NET Compact Framework - Windows CE .NET
アセンブリ: System (System.dll 内)