Socket Konstruktoren

Definition

Initialisiert eine neue Instanz der Socket-Klasse.Initializes a new instance of the Socket class.

Überlädt

Socket(SocketInformation)

Initialisiert eine neue Instanz der Socket-Klasse mit dem angegebenen Wert, der von DuplicateAndClose(Int32) zurückgegeben wird.Initializes a new instance of the Socket class using the specified value returned from DuplicateAndClose(Int32).

Socket(SocketType, ProtocolType)

Initialisiert eine neue Instanz der Socket-Klasse unter Verwendung der angegebenen Sockettyps und Protokolls.Initializes a new instance of the Socket class using the specified socket type and protocol.

Socket(AddressFamily, SocketType, ProtocolType)

Initialisiert eine neue Instanz der Socket-Klasse unter Verwendung der angegebenen Adressfamilie sowie des angegebenen Sockettyps und Protokolls.Initializes a new instance of the Socket class using the specified address family, socket type and protocol.

Socket(SocketInformation)

Initialisiert eine neue Instanz der Socket-Klasse mit dem angegebenen Wert, der von DuplicateAndClose(Int32) zurückgegeben wird.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

Parameter

socketInformation
SocketInformation

Die von DuplicateAndClose(Int32) zurückgegebenen Socketinformationen.The socket information returned by DuplicateAndClose(Int32).

Hinweise

Wenn Sie den Socket-Konstruktor mehrmals mit dem gleichen Bytearray wie das-Argument für jeden-Befehl aufzurufen, erstellen Sie mehrere verwaltete Sockets mit dem gleichen zugrunde liegenden Socket.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. Diese Vorgehensweise wird dringend davon abgeraten.This practice is strongly discouraged.

Socket(SocketType, ProtocolType)

Initialisiert eine neue Instanz der Socket-Klasse unter Verwendung der angegebenen Sockettyps und Protokolls.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

Parameter

socketType
SocketType

Einer der SocketType-Werte.One of the SocketType values.

protocolType
ProtocolType

Einer der ProtocolType-Werte.One of the ProtocolType values.

Ausnahmen

Die Kombination von socketType und protocolType führt zu einem ungültigen Socket.The combination of socketType and protocolType results in an invalid socket.

Hinweise

Der socketType-Parameter gibt den Typ der Socket Klasse an, und der protocolType-Parameter gibt das Protokoll an, das von Socketverwendet wird.The socketType parameter specifies the type of the Socket class and the protocolType parameter specifies the protocol used by Socket. Die beiden Parameter sind nicht unabhängig.The two parameters are not independent. Häufig ist der Socket Typ im Protokoll implizit.Often the Socket type is implicit in the protocol. Wenn die Kombination aus Socket Typ und Protokolltyp zu einem ungültigen Socketführt, löst dieser Konstruktor eine SocketExceptionaus.If the combination of Socket type and protocol type results in an invalid Socket, this constructor throws a SocketException.

Hinweis

Wenn dieser Konstruktor eine SocketExceptionauslöst, verwenden Sie die SocketException.ErrorCode-Eigenschaft, um den spezifischen Fehlercode abzurufen.If this constructor throws a SocketException, use the SocketException.ErrorCode property to obtain the specific error code. Nachdem Sie diesen Code abgerufen haben, finden Sie in der API-Fehlercode Dokumentation der Windows Sockets, Version 2 , eine ausführliche Beschreibung des Fehlers.After you have obtained this code, refer to the Windows Sockets version 2 API error code documentation for a detailed description of the error.

Hinweis

Dieser Member gibt Ablaufverfolgungsinformationen aus, wenn Sie die Netzwerkablaufverfolgung in der Anwendung aktivieren.This member outputs trace information when you enable network tracing in your application. Weitere Informationen finden Sie unter Netzwerk Ablauf Verfolgung in der .NET Framework.For more information, see Network Tracing in the .NET Framework.

Socket(AddressFamily, SocketType, ProtocolType)

Initialisiert eine neue Instanz der Socket-Klasse unter Verwendung der angegebenen Adressfamilie sowie des angegebenen Sockettyps und Protokolls.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

Parameter

addressFamily
AddressFamily

Einer der AddressFamily-Werte.One of the AddressFamily values.

socketType
SocketType

Einer der SocketType-Werte.One of the SocketType values.

protocolType
ProtocolType

Einer der ProtocolType-Werte.One of the ProtocolType values.

Ausnahmen

Die Kombination von addressFamily, socketType und protocolType führt zu einem ungültigen Socket.The combination of addressFamily, socketType, and protocolType results in an invalid socket.

Beispiele

Im folgenden Codebeispiel wird veranschaulicht, wie eine Instanz der Socket-Klasse erstellt wird.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

Hinweise

Der addressFamily-Parameter gibt das Adressierungs Schema an, das die Socket Klasse verwendet, der socketType-Parameter gibt den Typ der Socket Klasse an, und der protocolType-Parameter gibt das von Socketverwendete Protokoll an.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. Die drei Parameter sind nicht unabhängig.The three parameters are not independent. Einige Adressfamilien beschränken, welche Protokolle mit Ihnen verwendet werden können, und häufig ist der Socket Typ im Protokoll implizit.Some address families restrict which protocols can be used with them, and often the Socket type is implicit in the protocol. Wenn die Kombination aus Adressfamilie, Socket Typ und Protokolltyp zu einem ungültigen Socketführt, löst dieser Konstruktor eine SocketExceptionaus.If the combination of address family, Socket type, and protocol type results in an invalid Socket, this constructor throws a SocketException.

Hinweis

Wenn dieser Konstruktor eine SocketExceptionauslöst, verwenden Sie die SocketException.ErrorCode-Eigenschaft, um den spezifischen Fehlercode abzurufen.If this constructor throws a SocketException, use the SocketException.ErrorCode property to obtain the specific error code. Nachdem Sie diesen Code abgerufen haben, finden Sie in der API-Fehlercode Dokumentation der Windows Sockets, Version 2 , eine ausführliche Beschreibung des Fehlers.After you have obtained this code, refer to the Windows Sockets version 2 API error code documentation for a detailed description of the error.

Hinweis

Dieser Member gibt Ablaufverfolgungsinformationen aus, wenn Sie die Netzwerkablaufverfolgung in der Anwendung aktivieren.This member outputs trace information when you enable network tracing in your application. Weitere Informationen finden Sie unter Netzwerk Ablauf Verfolgung in der .NET Framework.For more information, see Network Tracing in the .NET Framework.

Siehe auch

Gilt für: