PingReply.RoundtripTime プロパティ

定義

インターネット制御メッセージ プロトコル (ICMP) エコー要求を送信して、対応する ICMP エコー応答メッセージを受信するまでにかかった時間をミリ秒単位で取得します。

public:
 property long RoundtripTime { long get(); };
public long RoundtripTime { get; }
member this.RoundtripTime : int64
Public ReadOnly Property RoundtripTime As Long

プロパティ値

Int64

往復時間 (ミリ秒単位) を指定する Int64

次のコード例では、ICMP エコー要求を同期的に送信し、このプロパティによって返されるバッファーのサイズを表示します。

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);
    }
}

注釈

Echo 要求が失敗した場合、時間は 0 として報告されます。これは、要求が成功した場合 RoundtripTime にも有効な値です。 をチェックして、このプロパティによって返される値を無視するかどうかを Status 判断する必要があります。

適用対象