TcpListener Classe

Définition

public ref class TcpListener

public ref class TcpListener : IDisposable

public class TcpListener

public class TcpListener : IDisposable

type TcpListener = class

type TcpListener = class
    interface IDisposable

Public Class TcpListener

Public Class TcpListener
Implements IDisposable

Héritage

Object

TcpListener

Implémente

IDisposable

Exemples

L’exemple de code suivant crée un TcpListener.

#using <System.dll>

using namespace System;
using namespace System::IO;
using namespace System::Net;
using namespace System::Net::Sockets;
using namespace System::Text;
using namespace System::Threading;
void main()
{
   try
   {
      
      // Set the TcpListener on port 13000.
      Int32 port = 13000;
      IPAddress^ localAddr = IPAddress::Parse( "127.0.0.1" );
      
      // TcpListener* server = new TcpListener(port);
      TcpListener^ server = gcnew TcpListener( localAddr,port );
      
      // Start listening for client requests.
      server->Start();
      
      // Buffer for reading data
      array<Byte>^bytes = gcnew array<Byte>(256);
      String^ data = nullptr;
      
      // Enter the listening loop.
      while ( true )
      {
         Console::Write( "Waiting for a connection... " );
         
         // Perform a blocking call to accept requests.
         // You could also use server.AcceptSocket() here.
         TcpClient^ client = server->AcceptTcpClient();
         Console::WriteLine( "Connected!" );
         data = nullptr;
         
         // 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 ) )
         {
            
            // Translate data bytes to a ASCII String*.
            data = Text::Encoding::ASCII->GetString( bytes, 0, i );
            Console::WriteLine( "Received: {0}", data );
            
            // Process the data sent by the client.
            data = data->ToUpper();
            array<Byte>^msg = Text::Encoding::ASCII->GetBytes( data );
            
            // Send back a response.
            stream->Write( msg, 0, msg->Length );
            Console::WriteLine( "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();
}

using System;
using System.IO;
using System.Net;
using System.Net.Sockets;
using System.Text;

class MyTcpListener
{
  public static void Main()
  {
    TcpListener server = null;
    try
    {
      // Set the TcpListener on port 13000.
      Int32 port = 13000;
      IPAddress localAddr = IPAddress.Parse("127.0.0.1");

      // TcpListener server = new TcpListener(port);
      server = new TcpListener(localAddr, 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 use server.AcceptSocket() here.
        using TcpClient client = server.AcceptTcpClient();
        Console.WriteLine("Connected!");

        data = null;

        // Get a stream object for reading and writing
        NetworkStream stream = client.GetStream();

        int 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("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("Sent: {0}", data);
        }
      }
    }
    catch(SocketException e)
    {
      Console.WriteLine("SocketException: {0}", e);
    }
    finally
    {
      server.Stop();
    }

    Console.WriteLine("\nHit enter to continue...");
    Console.Read();
  }
}

Imports System.IO
Imports System.Net
Imports System.Net.Sockets
Imports System.Text

Class MyTcpListener

    Public Shared Sub Main()

    Dim server As TcpListener
    server=nothing
        Try
            ' Set the TcpListener on port 13000.
         Dim port As Int32 = 13000
         Dim localAddr As IPAddress = IPAddress.Parse("127.0.0.1")

         server = New TcpListener(localAddr, 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 use 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("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("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)
      Finally
         server.Stop()
      End Try
      
      Console.WriteLine(ControlChars.Cr + "Hit enter to continue....")
      Console.Read()
   End Sub

End Class

Consultez TcpClient pour obtenir un exemple de client.

Remarques

La TcpListener classe fournit des méthodes simples qui écoutent et acceptent les demandes de connexion entrantes en mode synchrone bloquant. Vous pouvez utiliser un TcpClient ou un Socket pour vous connecter à un TcpListener. Créez un TcpListener à l’aide d’un IPEndPoint, d’une adresse IP locale et d’un numéro de port, ou simplement d’un numéro de port. Spécifiez Any pour l’adresse IP locale et 0 pour le numéro de port local si vous souhaitez que le fournisseur de services sous-jacent attribue ces valeurs pour vous. Si vous choisissez de le faire, vous pouvez utiliser la LocalEndpoint propriété pour identifier les informations affectées, une fois le socket connecté.

Utilisez la Start méthode pour commencer à écouter les demandes de connexion entrantes. Start met en file d’attente les connexions entrantes jusqu’à ce que vous appeliez la Stop méthode ou qu’elle ait mis en MaxConnectionsfile d’attente . AcceptSocket Utilisez ou AcceptTcpClient pour extraire une connexion de la file d’attente des demandes de connexion entrantes. Ces deux méthodes sont bloquées. Si vous souhaitez éviter le blocage, vous pouvez d’abord utiliser la Pending méthode pour déterminer si les demandes de connexion sont disponibles dans la file d’attente.

Appelez la Stop méthode pour fermer le TcpListener.

Constructeurs

Propriétés

Méthodes

S’applique à

Voir aussi

• TcpClient