保留中の接続要求を受け入れます。
Public Function AcceptTcpClient() As TcpClient
[C#]
public TcpClient AcceptTcpClient();
[C++]
public: TcpClient* AcceptTcpClient();
[JScript]
public function AcceptTcpClient() : TcpClient;
戻り値
データの送受信に使用する TcpClient 。
例外
| 例外の種類 | 条件 |
|---|---|
| InvalidOperationException | リスナが、 Start への呼び出しで開始されていません。 |
解説
AcceptTcpClient は、データの送受信に使用できる TcpClient を返すブロッキング メソッドです。ブロックしないようにする場合は、 Pending メソッドを使用して、接続要求が受信接続キュー内で使用可能かどうかを確認します。
TcpClient.GetStream を使用して、返される TcpClient の基になる NetworkStream を取得します。 NetworkStream は、リモート ホストを使用して送受信を行うためのメソッドを提供します。 TcpClient の使用を終了したら、必ず Close メソッドを呼び出してください。 TcpClient よりも柔軟性が必要な場合は、 AcceptSocket を使用します。
使用例
[Visual Basic, C#, C++] AcceptTcpClient を使用して TcpClient を取得する例を次に示します。この TcpClient は、新しく接続したクライアントとの通信に使用します。
' The following function creates a TcpServer that connects to
' the specified port (13000).
' Refer to the related client in the TcpClient class.
Public Shared Sub Main()
Try
' Set the TcpListener on port 13000.
Dim port As Int32 = 13000
Dim server As New TcpListener(port)
' Start listening for client requests.
server.Start()
' Buffer for reading data
Dim bytes(1024) As [Byte]
Dim data As [String] = Nothing
' Enter the listening loop.
While True
Console.Write("Waiting for a connection... ")
' Perform a blocking call to accept requests.
' You could also user server.AcceptSocket() here.
Dim client As TcpClient = server.AcceptTcpClient()
Console.WriteLine("Connected!")
data = Nothing
' Get a stream object for reading and writing
Dim stream As NetworkStream = client.GetStream()
Dim i As Int32
' Loop to receive all the data sent by the client.
i = stream.Read(bytes, 0, bytes.Length)
While (i <> 0)
' Translate data bytes to a ASCII string.
data = System.Text.Encoding.ASCII.GetString(bytes, 0, i)
Console.WriteLine([String].Format("Received: {0}", data))
' Process the data sent by the client.
data = data.ToUpper()
Dim msg As [Byte]() = System.Text.Encoding.ASCII.GetBytes(data)
' Send back a response.
stream.Write(msg, 0, msg.Length)
Console.WriteLine([String].Format("Sent: {0}", data))
i = stream.Read(bytes, 0, bytes.Length)
End While
' Shutdown and end connection
client.Close()
End While
Catch e As SocketException
Console.WriteLine("SocketException: {0}", e)
End Try
Console.WriteLine(ControlChars.Cr + "Hit enter to continue...")
Console.Read()
End Sub 'Main
[C#]
/**
* The following function creates a TcpServer that connects to
* the specified port (13000).Any TcpClient that wants to use this server
* has to explicitly connect to an address obtained by the combination of
* the sever on which this TCpServer is runnig and the port 13000.
* This TcpServer simply echoes back the message sent by the TcpClient, after
* translating it into uppercase.
* Refer to the related client in the TcpClient class.
**/
public static void Main()
{
try
{
// Set the TcpListener on port 13000.
Int32 port = 13000;
TcpListener server = new TcpListener(port);
// Start listening for client requests.
server.Start();
// Buffer for reading data
Byte[] bytes = new Byte[256];
String data = null;
// Enter the listening loop.
while(true)
{
Console.Write("Waiting for a connection... ");
// Perform a blocking call to accept requests.
// You could also user server.AcceptSocket() here.
TcpClient client = server.AcceptTcpClient();
Console.WriteLine("Connected!");
data = null;
// Get a stream object for reading and writing
NetworkStream stream = client.GetStream();
Int32 i;
// Loop to receive all the data sent by the client.
while((i = stream.Read(bytes, 0, bytes.Length))!=0)
{
// Translate data bytes to a ASCII string.
data = System.Text.Encoding.ASCII.GetString(bytes, 0, i);
Console.WriteLine(String.Format("Received: {0}", data));
// Process the data sent by the client.
data = data.ToUpper();
Byte[] msg = System.Text.Encoding.ASCII.GetBytes(data);
// Send back a response.
stream.Write(msg, 0, msg.Length);
Console.WriteLine(String.Format("Sent: {0}", data));
}
// Shutdown and end connection
client.Close();
}
}
catch(SocketException e)
{
Console.WriteLine("SocketException: {0}", e);
}
Console.WriteLine("\nHit enter to continue...");
Console.Read();
}
[C++]
/**
* The following function creates a TcpServer that connects to
* the specified port (13000).Any TcpClient that wants to use this server
* has to explicitly connect to an address obtained by the combination of
* the sever on which this TCpServer is runnig and the port 13000.
* This TcpServer simply echoes back the message sent by the TcpClient, after
* translating it into uppercase.
* Refer to the related client in the TcpClient class.
**/
int main()
{
try
{
// Set the TcpListener on port 13000.
Int32 port = 13000;
TcpListener* server = new TcpListener(port);
// Start listening for client requests.
server->Start();
// Buffer for reading data
Byte bytes[] = new Byte[256];
String* data = 0;
// Enter the listening loop.
while(true)
{
Console::Write(S"Waiting for a connection... ");
// Perform a blocking call to accept requests.
// You could also user server.AcceptSocket() here.
TcpClient* client = server->AcceptTcpClient();
Console::WriteLine(S"Connected!");
data = 0;
// Get a stream object for reading and writing
NetworkStream* stream = client->GetStream();
Int32 i;
// Loop to receive all the data sent by the client.
while((i = stream->Read(bytes, 0, bytes->Length))!=0)
{
// Translate data bytes to a ASCII string.
data = System::Text::Encoding::ASCII->GetString(bytes, 0, i);
Console::WriteLine(String::Format(S"Received: {0}", data));
// Process the data sent by the client.
data = data->ToUpper();
Byte msg[] = System::Text::Encoding::ASCII->GetBytes(data);
// Send back a response.
stream->Write(msg, 0, msg->Length);
Console::WriteLine(String::Format(S"Sent: {0}", data));
}
// Shutdown and end connection
client->Close();
}
}
catch(SocketException* e)
{
Console::WriteLine(S"SocketException: {0}", e);
}
Console::WriteLine(S"\nHit enter to continue...");
Console::Read();
}
[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
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
参照
TcpListener クラス | TcpListener メンバ | System.Net.Sockets 名前空間 | TcpClient | AcceptSocket | Socket | NetworkStream