IPGlobalProperties.GetTcpIPv4Statistics Metodo

Definizione

Spazio dei nomi:

System.Net.NetworkInformation

Assembly:

System.Net.NetworkInformation.dll

Origine:

IPGlobalProperties.cs

Fornisce i dati statistici dei protocolli TCP/IP versione 4 per il computer locale.

public:
 abstract System::Net::NetworkInformation::TcpStatistics ^ GetTcpIPv4Statistics();

[System.Runtime.Versioning.UnsupportedOSPlatform("android")]
public abstract System.Net.NetworkInformation.TcpStatistics GetTcpIPv4Statistics ();

[<System.Runtime.Versioning.UnsupportedOSPlatform("android")>]
abstract member GetTcpIPv4Statistics : unit -> System.Net.NetworkInformation.TcpStatistics

Public MustOverride Function GetTcpIPv4Statistics () As TcpStatistics

Restituisce

TcpStatistics

Oggetto TcpStatistics che fornisce le statistiche sul traffico TCP/IP versione 4 per il computer locale.

Attributi

UnsupportedOSPlatformAttribute

Eccezioni

NetworkInformationException

La chiamata alla funzione Win32 GetTcpStatistics non è riuscita.

Esempio

Nell'esempio seguente vengono visualizzate le statistiche TCP/IP per il computer locale.

void ShowTcpStatistics( NetworkInterfaceComponent version )
{
   IPGlobalProperties ^ properties = IPGlobalProperties::GetIPGlobalProperties();
   TcpStatistics ^ tcpstat = nullptr;
   Console::WriteLine( "" );
   switch ( version )
   {
      case NetworkInterfaceComponent::IPv4:
         tcpstat = properties->GetTcpIPv4Statistics();
         Console::WriteLine( "TCP/IPv4 Statistics:" );
         break;

      case NetworkInterfaceComponent::IPv6:
         tcpstat = properties->GetTcpIPv6Statistics();
         Console::WriteLine( "TCP/IPv6 Statistics:" );
         break;

      default:
         throw gcnew ArgumentException( "version" );
         break;
   }
   Console::WriteLine( "  Minimum Transmission Timeout............. : {0}",
      tcpstat->MinimumTransmissionTimeout );
   Console::WriteLine( "  Maximum Transmission Timeout............. : {0}",
      tcpstat->MaximumTransmissionTimeout );
   Console::WriteLine( "  Connection Data:" );
   Console::WriteLine( "      Current  ............................ : {0}",
      tcpstat->CurrentConnections );
   Console::WriteLine( "      Cumulative .......................... : {0}",
      tcpstat->CumulativeConnections );
   Console::WriteLine( "      Initiated ........................... : {0}",
      tcpstat->ConnectionsInitiated );
   Console::WriteLine( "      Accepted ............................ : {0}",
      tcpstat->ConnectionsAccepted );
   Console::WriteLine( "      Failed Attempts ..................... : {0}",
      tcpstat->FailedConnectionAttempts );
   Console::WriteLine( "      Reset ............................... : {0}",
      tcpstat->ResetConnections );
   Console::WriteLine( "" );
   Console::WriteLine( "  Segment Data:" );
   Console::WriteLine( "      Received  ........................... : {0}",
      tcpstat->SegmentsReceived );
   Console::WriteLine( "      Sent ................................ : {0}",
      tcpstat->SegmentsSent );
   Console::WriteLine( "      Retransmitted ....................... : {0}",
      tcpstat->SegmentsResent );
   Console::WriteLine( "" );
}

public static void ShowTcpStatistics(NetworkInterfaceComponent version)
{
    IPGlobalProperties properties = IPGlobalProperties.GetIPGlobalProperties();
    TcpStatistics tcpstat = null;
    Console.WriteLine("");
    switch (version)
    {
        case NetworkInterfaceComponent.IPv4:
             tcpstat = properties.GetTcpIPv4Statistics();
            Console.WriteLine("TCP/IPv4 Statistics:");
            break;
        case NetworkInterfaceComponent.IPv6:
            tcpstat = properties.GetTcpIPv6Statistics();
            Console.WriteLine("TCP/IPv6 Statistics:");
            break;
        default:
            throw new ArgumentException("version");
        //    break;
    }
    Console.WriteLine("  Minimum Transmission Timeout............. : {0}",
        tcpstat.MinimumTransmissionTimeout);
    Console.WriteLine("  Maximum Transmission Timeout............. : {0}",
        tcpstat.MaximumTransmissionTimeout);

    Console.WriteLine("  Connection Data:");
    Console.WriteLine("      Current  ............................ : {0}",
    tcpstat.CurrentConnections);
    Console.WriteLine("      Cumulative .......................... : {0}",
        tcpstat.CumulativeConnections);
    Console.WriteLine("      Initiated ........................... : {0}",
        tcpstat.ConnectionsInitiated);
    Console.WriteLine("      Accepted ............................ : {0}",
        tcpstat.ConnectionsAccepted);
    Console.WriteLine("      Failed Attempts ..................... : {0}",
        tcpstat.FailedConnectionAttempts);
    Console.WriteLine("      Reset ............................... : {0}",
        tcpstat.ResetConnections);

    Console.WriteLine("");
    Console.WriteLine("  Segment Data:");
    Console.WriteLine("      Received  ........................... : {0}",
        tcpstat.SegmentsReceived);
    Console.WriteLine("      Sent ................................ : {0}",
        tcpstat.SegmentsSent);
    Console.WriteLine("      Retransmitted ....................... : {0}",
        tcpstat.SegmentsResent);

    Console.WriteLine("");
}

Commenti

TCP è un protocollo di livello di trasporto responsabile dell'invio affidabile e della ricezione di pacchetti di dati. È definito in IETF RFC 793.

Per informazioni dettagliate sulle statistiche del traffico TCP disponibili per le applicazioni, vedere la documentazione della TcpStatistics classe. Si noti che l'oggetto restituito da questo metodo riflette le statistiche a partire dal momento in cui viene creato l'oggetto TcpStatistics . Queste informazioni non vengono aggiornate dinamicamente.