PingReply.RoundtripTime 属性

定义

命名空间:

System.Net.NetworkInformation

程序集:

netstandard.dll, System.Net.Ping.dll

Source:

PingReply.cs

获取发送 Internet 控制消息协议 (ICMP) 回显请求和接收相应 ICMP 回显回复消息所花费的毫秒数。

C#

public long RoundtripTime { get; }

属性值

Int64

一个 Int64，用于指定往返时间（以毫秒计）。

示例

下面的代码示例同步发送 ICMP 回显请求，并显示此属性返回的缓冲区的大小。

C#

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);
    }
}

注解

如果 Echo 请求失败，则 RoundtripTime 时间报告为 0，这也是请求成功时的有效值。 必须检查Status，确定是否应忽略此属性返回的值。

适用于