PingReply 类

定义

public ref class PingReply

public class PingReply

type PingReply = class

Public Class PingReply

继承

Object

PingReply

示例

下面的代码示例演示如何使用 Ping 类同步发送 ICMP 回显请求并显示响应。

using System;
using System.Net;
using System.Net.NetworkInformation;
using System.Text;

namespace Examples.System.Net.NetworkInformation.PingTest
{
    public class PingExample
    {
        // args[0] can be an IPaddress or host name.
        public static void Main (string[] args)
        {
            Ping pingSender = new Ping ();
            PingOptions options = new PingOptions ();

            // Use the default Ttl value which is 128,
            // but change the fragmentation behavior.
            options.DontFragment = true;

            // Create a buffer of 32 bytes of data to be transmitted.
            string data = "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa";
            byte[] buffer = Encoding.ASCII.GetBytes (data);
            int timeout = 120;
            PingReply reply = pingSender.Send (args[0], 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);
            }
        }
    }
}

open System.Net.NetworkInformation
open System.Text

// args[0] can be an IPaddress or host name.
[<EntryPoint>]
let main args =
    let pingSender = new Ping()

    // Use the default Ttl value which is 128,
    // but change the fragmentation behavior.
    let options = PingOptions()
    options.DontFragment <- true

    // Create a buffer of 32 bytes of data to be transmitted.
    let data = "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
    let buffer = Encoding.ASCII.GetBytes data
    let timeout = 120
    let reply: PingReply = pingSender.Send(args.[0], timeout, buffer, options)

    match reply.Status with
    | IPStatus.Success ->
        printfn "Address: %O" reply.Address
        printfn "RoundTrip time: %d" reply.RoundtripTime
        printfn "Time to live: %d" reply.Options.Ttl
        printfn "Don't fragment: %b" reply.Options.DontFragment
        printfn "Buffer size: %d" reply.Buffer.Length
        0
    | _ ->
        eprintfn "Error sending ping: %O" reply
        eprintfn "Error was: %O" reply.Status
        1

注解

类 Ping 尝试将 Internet 控制消息协议 (ICMP) 回显请求发送到远程计算机，并通过 ICMP 回显回复消息从计算机接收信息。 类 Ping 使用 类的 PingReply 实例返回有关操作的信息，例如其状态以及发送请求和接收回复所花费的时间。

方法 Send 直接返回 类的 PingReply 实例。 方法SendAsync在方法的 PingCompletedEventArgs 参数中PingCompletedEventHandler返回 PingReply 。 PingReply通过 Reply 属性访问 。

如果 的值Status不是 Success，则不应使用 、 RoundtripTimeOptions 或 Buffer 属性返回的值。 属性 RoundtripTime 将返回零， Buffer 属性将返回空数组，属性 Options 将返回 null。