PingReply.Buffer Eigenschaft

Definition

Ruft den in einer ICMP (Internet Control Message Protocol)-Echoantwortmeldung empfangenen Datenpuffer ab.Gets the buffer of data received in an Internet Control Message Protocol (ICMP) echo reply message.

public:
 property cli::array <System::Byte> ^ Buffer { cli::array <System::Byte> ^ get(); };
public byte[] Buffer { get; }
member this.Buffer : byte[]
Public ReadOnly Property Buffer As Byte()

Eigenschaftswert

Byte[]

Ein Byte-Array mit den in einer ICMP-Echoantwortmeldung empfangenen Daten, oder ein leeres Array, wenn keine Antwort empfangen wurde.A Byte array containing the data received in an ICMP echo reply message, or an empty array, if no reply was received.

Beispiele

Im folgenden Codebeispiel wird eine ICMP-Echo Anforderung synchron gesendet und die Größe des von dieser Eigenschaft zurückgegebenen Puffers angezeigt.The following code example sends an ICMP echo request synchronously and displays the size of the buffer returned by this property.

void ComplexPing()
{
   Ping ^ pingSender = gcnew Ping;
   
   // Create a buffer of 32 bytes of data to be transmitted.
   String^ data = "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa";
   array<Byte>^buffer = Encoding::ASCII->GetBytes( data );
   
   // Wait 10 seconds for a reply.
   int timeout = 10000;
   
   // Set options for transmission:
   // The data can go through 64 gateways or routers
   // before it is destroyed, and the data packet
   // cannot be fragmented.
   PingOptions ^ options = gcnew PingOptions( 64,true );
   
   // Send the request.
   PingReply ^ reply = pingSender->Send( "www.contoso.com", timeout, buffer, options );
   if ( reply->Status == IPStatus::Success )
   {
      Console::WriteLine( "Address: {0}", reply->Address->ToString() );
      Console::WriteLine( "RoundTrip time: {0}", reply->RoundtripTime );
      Console::WriteLine( "Time to live: {0}", reply->Options->Ttl );
      Console::WriteLine( "Don't fragment: {0}", reply->Options->DontFragment );
      Console::WriteLine( "Buffer size: {0}", reply->Buffer->Length );
   }
   else
   {
      Console::WriteLine( reply->Status );
   }
}


public static void ComplexPing ()
{
    Ping pingSender = new Ping ();

    // Create a buffer of 32 bytes of data to be transmitted.
    string data = "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa";
    byte[] buffer = Encoding.ASCII.GetBytes (data);

    // Wait 10 seconds for a reply.
    int timeout = 10000;

    // Set options for transmission:
    // The data can go through 64 gateways or routers
    // before it is destroyed, and the data packet
    // cannot be fragmented.
    PingOptions options = new PingOptions (64, true);

    // Send the request.
    PingReply reply = pingSender.Send ("www.contoso.com", timeout, buffer, options);

    if (reply.Status == IPStatus.Success)
    {
        Console.WriteLine ("Address: {0}", reply.Address.ToString ());
        Console.WriteLine ("RoundTrip time: {0}", reply.RoundtripTime);
        Console.WriteLine ("Time to live: {0}", reply.Options.Ttl);
        Console.WriteLine ("Don't fragment: {0}", reply.Options.DontFragment);
        Console.WriteLine ("Buffer size: {0}", reply.Buffer.Length);
    }
    else
    {
        Console.WriteLine (reply.Status);
    }
}

Hinweise

Der mit der ICMP-Echo Anforderung gesendete Datenpuffer wird an den Absender in der Echo Antwort zurückgegeben, sodass die Roundtrip-Reisezeit für ein Paket mit einer bekannten Größe berechnet werden kann.The data buffer sent with the ICMP echo request is returned to the sender in the echo reply so the roundtrip travel time for a packet of a known size can be computed. Der Datenpuffer kann in Kombination DontFragment mit der-Option verwendet werden, um die maximale Übertragungseinheit für den Netzwerkpfad zwischen dem Quell-und dem Zielcomputer zu ermitteln.The data buffer, combined with the DontFragment option, can be used to discover the maximum transmission unit for the network path between the source and destination computers. Weitere Informationen finden Sie unter "traceroute" in RFC 1574, Abschnitt 3,2, verfügbar unter https://www.ietf.org.For additional information, see "Traceroute" in RFC 1574, Section 3.2, available at https://www.ietf.org.

Der Standard Puffer, der Send mit SendAsync und 32 Bytes an Daten enthält.The default buffer used with Send and SendAsync contains 32 bytes of data.

Gilt für: