Socket Constructeurs

Définition

Initialise une nouvelle instance de la classe Socket.Initializes a new instance of the Socket class.

Surcharges

Socket(SocketInformation)

Initialise une nouvelle instance de la classe Socket avec la valeur spécifiée retournée par DuplicateAndClose(Int32).Initializes a new instance of the Socket class using the specified value returned from DuplicateAndClose(Int32).

Socket(SocketType, ProtocolType)

Initialise une nouvelle instance de la classe Socket à l'aide du type de socket et du protocole spécifiés.Initializes a new instance of the Socket class using the specified socket type and protocol.

Socket(AddressFamily, SocketType, ProtocolType)

Initialise une nouvelle instance de la classe Socket en utilisant la famille d'adresses, le type de socket et le protocole spécifiés.Initializes a new instance of the Socket class using the specified address family, socket type and protocol.

Socket(SocketInformation)

Initialise une nouvelle instance de la classe Socket avec la valeur spécifiée retournée par DuplicateAndClose(Int32).Initializes a new instance of the Socket class using the specified value returned from DuplicateAndClose(Int32).

public:
 Socket(System::Net::Sockets::SocketInformation socketInformation);
public Socket (System.Net.Sockets.SocketInformation socketInformation);
new System.Net.Sockets.Socket : System.Net.Sockets.SocketInformation -> System.Net.Sockets.Socket

Paramètres

socketInformation
SocketInformation

Informations de socket retournées par DuplicateAndClose(Int32).The socket information returned by DuplicateAndClose(Int32).

Remarques

Si vous appelez le constructeur Socket plusieurs fois avec le même tableau d’octets que l’argument pour chaque appel, vous allez créer plusieurs Socketmanagées avec le même socket sous-jacent.If you call the Socket constructor multiple times with the same byte array as the argument for each call, you will create multiple managed Sockets with the same underlying socket. Cette pratique est fortement déconseillée.This practice is strongly discouraged.

Socket(SocketType, ProtocolType)

Initialise une nouvelle instance de la classe Socket à l'aide du type de socket et du protocole spécifiés.Initializes a new instance of the Socket class using the specified socket type and protocol.

public:
 Socket(System::Net::Sockets::SocketType socketType, System::Net::Sockets::ProtocolType protocolType);
public Socket (System.Net.Sockets.SocketType socketType, System.Net.Sockets.ProtocolType protocolType);
new System.Net.Sockets.Socket : System.Net.Sockets.SocketType * System.Net.Sockets.ProtocolType -> System.Net.Sockets.Socket

Paramètres

socketType
SocketType

Une des valeurs de l’objet SocketType.One of the SocketType values.

protocolType
ProtocolType

Une des valeurs de l’objet ProtocolType.One of the ProtocolType values.

Exceptions

La combinaison de socketType et protocolType aboutit à un socket non valide.The combination of socketType and protocolType results in an invalid socket.

Remarques

Le paramètre socketType spécifie le type de la classe Socket et le paramètre protocolType spécifie le protocole utilisé par Socket.The socketType parameter specifies the type of the Socket class and the protocolType parameter specifies the protocol used by Socket. Les deux paramètres ne sont pas indépendants.The two parameters are not independent. Souvent, le type de Socket est implicite dans le protocole.Often the Socket type is implicit in the protocol. Si la combinaison de Socket type et du type de protocole aboutit à un Socketnon valide, ce constructeur lève une SocketException.If the combination of Socket type and protocol type results in an invalid Socket, this constructor throws a SocketException.

Notes

Si ce constructeur lève une SocketException, utilisez la propriété SocketException.ErrorCode pour obtenir le code d’erreur spécifique.If this constructor throws a SocketException, use the SocketException.ErrorCode property to obtain the specific error code. Une fois que vous avez obtenu ce code, reportez-vous à la documentation sur les codes d’erreur de l' API Windows Sockets version 2 pour obtenir une description détaillée de l’erreur.After you have obtained this code, refer to the Windows Sockets version 2 API error code documentation for a detailed description of the error.

Notes

Ce membre génère des informations de traçage lorsque vous activez le traçage réseau dans votre application.This member outputs trace information when you enable network tracing in your application. Pour plus d’informations, consultez la page traçage réseau dans le .NET Framework.For more information, see Network Tracing in the .NET Framework.

Socket(AddressFamily, SocketType, ProtocolType)

Initialise une nouvelle instance de la classe Socket en utilisant la famille d'adresses, le type de socket et le protocole spécifiés.Initializes a new instance of the Socket class using the specified address family, socket type and protocol.

public:
 Socket(System::Net::Sockets::AddressFamily addressFamily, System::Net::Sockets::SocketType socketType, System::Net::Sockets::ProtocolType protocolType);
public Socket (System.Net.Sockets.AddressFamily addressFamily, System.Net.Sockets.SocketType socketType, System.Net.Sockets.ProtocolType protocolType);
new System.Net.Sockets.Socket : System.Net.Sockets.AddressFamily * System.Net.Sockets.SocketType * System.Net.Sockets.ProtocolType -> System.Net.Sockets.Socket

Paramètres

addressFamily
AddressFamily

Une des valeurs de l’objet AddressFamily.One of the AddressFamily values.

socketType
SocketType

Une des valeurs de l’objet SocketType.One of the SocketType values.

protocolType
ProtocolType

Une des valeurs de l’objet ProtocolType.One of the ProtocolType values.

Exceptions

La combinaison de addressFamily, socketType et protocolType crée un socket non valide.The combination of addressFamily, socketType, and protocolType results in an invalid socket.

Exemples

L’exemple de code suivant montre comment créer une instance de la classe Socket.The following code example demonstrates how to create an instance of the Socket class.

#using <System.dll>

using namespace System;
using namespace System::Text;
using namespace System::IO;
using namespace System::Net;
using namespace System::Net::Sockets;
String^ DoSocketGet( String^ server )
{
   
   //Set up variables and String to write to the server.
   Encoding^ ASCII = Encoding::ASCII;
   String^ Get =  "GET / HTTP/1.1\r\nHost: ";
   Get->Concat( server,  "\r\nConnection: Close\r\n\r\n" );
   array<Byte>^ByteGet = ASCII->GetBytes( Get );
   array<Byte>^RecvBytes = gcnew array<Byte>(256);
   String^ strRetPage = nullptr;
   
   // IPAddress and IPEndPoint represent the endpoint that will
   //   receive the request.
   // Get first IPAddress in list return by DNS.
   try
   {
      
      // Define those variables to be evaluated in the next for loop and 
      // then used to connect to the server. These variables are defined
      // outside the for loop to make them accessible there after.
      Socket^ s = nullptr;
      IPEndPoint^ hostEndPoint;
      IPAddress^ hostAddress = nullptr;
      int conPort = 80;
      
      // Get DNS host information.
      IPHostEntry^ hostInfo = Dns::Resolve( server );
      
      // Get the DNS IP addresses associated with the host.
      array<IPAddress^>^IPaddresses = hostInfo->AddressList;
      
      // Evaluate the socket and receiving host IPAddress and IPEndPoint. 
      for ( int index = 0; index < IPaddresses->Length; index++ )
      {
         hostAddress = IPaddresses[ index ];
         hostEndPoint = gcnew IPEndPoint( hostAddress,conPort );
         
         // Creates the Socket to send data over a TCP connection.
         s = gcnew Socket( AddressFamily::InterNetwork,SocketType::Stream,ProtocolType::Tcp );
         
         // Connect to the host using its IPEndPoint.
         s->Connect( hostEndPoint );
         if (  !s->Connected )
         {
            
            // Connection failed, try next IPaddress.
            strRetPage =  "Unable to connect to host";
            s = nullptr;
            continue;
         }

         
         // Sent the GET request to the host.
         s->Send( ByteGet, ByteGet->Length, SocketFlags::None );
         

      }
      
      // Receive the host home page content and loop until all the data is received.
      Int32 bytes = s->Receive( RecvBytes, RecvBytes->Length, SocketFlags::None );
      strRetPage =  "Default HTML page on ";
      strRetPage->Concat( server,  ":\r\n", ASCII->GetString( RecvBytes, 0, bytes ) );
      while ( bytes > 0 )
      {
         bytes = s->Receive( RecvBytes, RecvBytes->Length, SocketFlags::None );
         strRetPage->Concat( ASCII->GetString( RecvBytes, 0, bytes ) );
      }

      
   }
   catch ( SocketException^ e ) 
   {
      Console::WriteLine(  "SocketException caught!!!" );
      Console::Write(  "Source : " );
      Console::WriteLine( e->Source );
      Console::Write(  "Message : " );
      Console::WriteLine( e->Message );
   }
   catch ( ArgumentNullException^ e ) 
   {
      Console::WriteLine(  "ArgumentNULLException caught!!!" );
      Console::Write(  "Source : " );
      Console::WriteLine( e->Source );
      Console::Write(  "Message : " );
      Console::WriteLine( e->Message );
   }
   catch ( NullReferenceException^ e ) 
   {
      Console::WriteLine(  "NULLReferenceException caught!!!" );
      Console::Write(  "Source : " );
      Console::WriteLine( e->Source );
      Console::Write(  "Message : " );
      Console::WriteLine( e->Message );
   }
   catch ( Exception^ e ) 
   {
      Console::WriteLine(  "Exception caught!!!" );
      Console::Write(  "Source : " );
      Console::WriteLine( e->Source );
      Console::Write(  "Message : " );
      Console::WriteLine( e->Message );
   }

   return strRetPage;
}

int main()
{
   Console::WriteLine( DoSocketGet(  "localhost" ) );
}

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

public class Sample
{

  public static string DoSocketGet(string server) 
  {
    //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;

    // IPAddress and IPEndPoint represent the endpoint that will
    //   receive the request.
    // Get first IPAddress in list return by DNS.

    try
    {

      // Define those variables to be evaluated in the next for loop and 
      // then used to connect to the server. These variables are defined
      // outside the for loop to make them accessible there after.
      Socket s = null;
      IPEndPoint hostEndPoint;
      IPAddress hostAddress = null;
      int conPort = 80;

      // Get DNS host information.
      IPHostEntry hostInfo = Dns.GetHostEntry(server);
      // Get the DNS IP addresses associated with the host.
      IPAddress[] IPaddresses = hostInfo.AddressList;

      // Evaluate the socket and receiving host IPAddress and IPEndPoint. 
      for (int index=0; index<IPaddresses.Length; index++)
      {
        hostAddress = IPaddresses[index];
        hostEndPoint = new IPEndPoint(hostAddress, conPort);


        // Creates the Socket to send data over a TCP connection.
        s = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp );


        // Connect to the host using its IPEndPoint.
        s.Connect(hostEndPoint);

        if (!s.Connected)
        {
          // Connection failed, try next IPaddress.
          strRetPage = "Unable to connect to host";
          s = null;
          continue;
        }

        // Sent the GET request to the host.
        s.Send(ByteGet, ByteGet.Length, 0);


      } // End of the for loop.      

 
      // Receive the host home page content and loop until all the data is received.
      Int32 bytes = s.Receive(RecvBytes, RecvBytes.Length, 0);
      strRetPage = "Default HTML page on " + server + ":\r\n";
      strRetPage = strRetPage + ASCII.GetString(RecvBytes, 0, bytes);
 
      while (bytes > 0)
      {
        bytes = s.Receive(RecvBytes, RecvBytes.Length, 0);
        strRetPage = strRetPage + ASCII.GetString(RecvBytes, 0, bytes);
      }

    
    } // End of the try block.
    
    catch(SocketException e) 
    {
      Console.WriteLine("SocketException caught!!!");
      Console.WriteLine("Source : " + e.Source);
      Console.WriteLine("Message : " + e.Message);
    }
    catch(ArgumentNullException e)
    {
      Console.WriteLine("ArgumentNullException caught!!!");
      Console.WriteLine("Source : " + e.Source);
      Console.WriteLine("Message : " + e.Message);
    }
    catch(NullReferenceException e)
    {
      Console.WriteLine("NullReferenceException caught!!!");
      Console.WriteLine("Source : " + e.Source);
      Console.WriteLine("Message : " + e.Message);
    }
    catch(Exception e)
    {
      Console.WriteLine("Exception caught!!!");
      Console.WriteLine("Source : " + e.Source);
      Console.WriteLine("Message : " + e.Message);
    }
    
    return strRetPage;

}
   public static void Main()
   {
      Console.WriteLine(DoSocketGet("localhost"));
   }
 }
Imports System.Text
Imports System.IO
Imports System.Net
Imports System.Net.Sockets

 _

Public Class Sample
   
   
   Public Shared Function DoSocketGet(server As String) 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.Lf + ControlChars.NewLine + "Host: " + server + ControlChars.Lf + ControlChars.NewLine + "Connection: Close" + ControlChars.Lf + ControlChars.NewLine + ControlChars.Lf + ControlChars.NewLine
    Dim ByteGet As [Byte]() = ASCII.GetBytes([Get])
    Dim RecvBytes(256) As [Byte]
    Dim strRetPage As [String] = Nothing


      
      ' IPAddress and IPEndPoint represent the endpoint that will
      '   receive the request.
      ' Get first IPAddress in list return by DNS.
      Try

 

         ' Define those variables to be evaluated in the next for loop and 
         ' then used to connect to the server. These variables are defined
         ' outside the for loop to make them accessible there after.
         Dim s As Socket = Nothing
         Dim hostEndPoint As IPEndPoint
         Dim hostAddress As IPAddress = Nothing
         Dim conPort As Integer = 80
         
         ' Get DNS host information.
         Dim hostInfo As IPHostEntry = Dns.Resolve(server)
         ' Get the DNS IP addresses associated with the host.
         Dim IPaddresses As IPAddress() = hostInfo.AddressList
         
         ' Evaluate the socket and receiving host IPAddress and IPEndPoint. 
      Dim index As Integer = 0
      For index = 0 To IPaddresses.Length - 1
        hostAddress = IPaddresses(index)
        hostEndPoint = New IPEndPoint(hostAddress, conPort)


        ' Creates the Socket to send data over a TCP connection.
        s = New Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp)


        ' Connect to the host using its IPEndPoint.
        s.Connect(hostEndPoint)

        If Not s.Connected Then
          ' Connection failed, try next IPaddress.
          strRetPage = "Unable to connect to host"
          s = Nothing
          GoTo ContinueFor1
        End If


        ' Sent the GET request to the host.
        s.Send(ByteGet, ByteGet.Length, 0)


ContinueFor1:
      Next index  ' End of the for loop.
      



      ' Receive the host home page content and loop until all the data is received.

      'Dim bytes As Int32 = s.Receive(RecvBytes, RecvBytes.Length, 0)
      Dim bytes As Int32 = s.Receive(RecvBytes, RecvBytes.Length, 0)

      strRetPage = "Default HTML page on " + server + ":\r\n"
      strRetPage = "Default HTML page on " + server + ":" + ControlChars.Lf + ControlChars.NewLine

      Dim i As Integer

      While bytes > 0

        bytes = s.Receive(RecvBytes, RecvBytes.Length, 0)

        strRetPage = strRetPage + ASCII.GetString(RecvBytes, 0, bytes)

      End While


      ' End of the try block.
    Catch e As SocketException
         Console.WriteLine("SocketException caught!!!")
         Console.WriteLine(("Source : " + e.Source))
         Console.WriteLine(("Message : " + e.Message))
      Catch e As ArgumentNullException
         Console.WriteLine("ArgumentNullException caught!!!")
         Console.WriteLine(("Source : " + e.Source))
         Console.WriteLine(("Message : " + e.Message))
      Catch e As NullReferenceException
         Console.WriteLine("NullReferenceException caught!!!")
         Console.WriteLine(("Source : " + e.Source))
         Console.WriteLine(("Message : " + e.Message))
      Catch e As Exception
         Console.WriteLine("Exception caught!!!")
         Console.WriteLine(("Source : " + e.Source))
         Console.WriteLine(("Message : " + e.Message))
      End Try
      
      Return strRetPage
   End Function 'DoSocketGet
    
   Public Shared Sub Main()
    Console.WriteLine(DoSocketGet("localhost"))
   End Sub
End Class

Remarques

Le paramètre addressFamily spécifie le schéma d’adressage que la classe Socket utilise, le paramètre socketType spécifie le type de la classe Socket, et le paramètre protocolType spécifie le protocole utilisé par Socket.The addressFamily parameter specifies the addressing scheme that the Socket class uses, the socketType parameter specifies the type of the Socket class, and the protocolType parameter specifies the protocol used by Socket. Les trois paramètres ne sont pas indépendants.The three parameters are not independent. Certaines familles d’adresses restreignent les protocoles qui peuvent être utilisés avec eux, et souvent le type de Socket est implicite dans le protocole.Some address families restrict which protocols can be used with them, and often the Socket type is implicit in the protocol. Si la combinaison de la famille d’adresses, du type de Socket et du type de protocole aboutit à un Socketnon valide, ce constructeur lève une SocketException.If the combination of address family, Socket type, and protocol type results in an invalid Socket, this constructor throws a SocketException.

Notes

Si ce constructeur lève une SocketException, utilisez la propriété SocketException.ErrorCode pour obtenir le code d’erreur spécifique.If this constructor throws a SocketException, use the SocketException.ErrorCode property to obtain the specific error code. Une fois que vous avez obtenu ce code, reportez-vous à la documentation sur les codes d’erreur de l' API Windows Sockets version 2 pour obtenir une description détaillée de l’erreur.After you have obtained this code, refer to the Windows Sockets version 2 API error code documentation for a detailed description of the error.

Notes

Ce membre génère des informations de traçage lorsque vous activez le traçage réseau dans votre application.This member outputs trace information when you enable network tracing in your application. Pour plus d’informations, consultez la page traçage réseau dans le .NET Framework.For more information, see Network Tracing in the .NET Framework.

Voir aussi

S’applique à