TraceRoute和平C#

Question

没有任何人有C#代码方便用于做一个和平traceroute一目标的电脑吗？我在寻找一个纯粹的代码解决方案，而不是我现在做，这是援引的ping.exe 和tracert.exe 程序和分析的产出。我会喜欢的东西更加坚固。

Answer 1

虽然基类图书馆包括 Ping, ，BCL不包括任何跟踪功能。

然而，快速搜寻显示两个公开来源的尝试，首先在C#第二C++:

• http://www.codeproject.com/KB/IP/tracert.aspx
• http://www.codeguru.com/Cpp/I-N/network/basicnetworkoperations/article.php/c5457/

Answer 2

鉴于我今天必须写一个TraceRoute类，我想我也可以分享源代码。

using System.Collections.Generic;
using System.Net.NetworkInformation;
using System.Text;
using System.Net;

namespace Answer
{  
  public class TraceRoute
  {
    private const string Data = "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa";

    public static IEnumerable<IPAddress> GetTraceRoute(string hostNameOrAddress)
    {
      return GetTraceRoute(hostNameOrAddress, 1);
    }
    private static IEnumerable<IPAddress> GetTraceRoute(string hostNameOrAddress, int ttl)
    {
      Ping pinger = new Ping();
      PingOptions pingerOptions = new PingOptions(ttl, true);
      int timeout = 10000;
      byte[] buffer = Encoding.ASCII.GetBytes(Data);
      PingReply reply = default(PingReply);

      reply = pinger.Send(hostNameOrAddress, timeout, buffer, pingerOptions);

      List<IPAddress> result = new List<IPAddress>();
      if (reply.Status == IPStatus.Success)
      {
        result.Add(reply.Address);
      }
      else if (reply.Status == IPStatus.TtlExpired || reply.Status == IPStatus.TimedOut)
      {
        //add the currently returned address if an address was found with this TTL
        if (reply.Status == IPStatus.TtlExpired) result.Add(reply.Address);
        //recurse to get the next address...
        IEnumerable<IPAddress> tempResult = default(IEnumerable<IPAddress>);
        tempResult = GetTraceRoute(hostNameOrAddress, ttl + 1);
        result.AddRange(tempResult);
      }
      else
      {
        //failure 
      }

      return result;
    }
  }
}

为任何想要/需要它的人提供VB版本

Public Class TraceRoute
    Private Const Data As String = "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"

    Public Shared Function GetTraceRoute(ByVal hostNameOrAddress As String) As IEnumerable(Of IPAddress)
        Return GetTraceRoute(hostNameOrAddress, 1)
    End Function
    Private Shared Function GetTraceRoute(ByVal hostNameOrAddress As String, ByVal ttl As Integer) As IEnumerable(Of IPAddress)
        Dim pinger As Ping = New Ping
        Dim pingerOptions As PingOptions = New PingOptions(ttl, True)
        Dim timeout As Integer = 10000
        Dim buffer() As Byte = Encoding.ASCII.GetBytes(Data)
        Dim reply As PingReply

        reply = pinger.Send(hostNameOrAddress, timeout, buffer, pingerOptions)

        Dim result As List(Of IPAddress) = New List(Of IPAddress)
        If reply.Status = IPStatus.Success Then
            result.Add(reply.Address)
        ElseIf reply.Status = IPStatus.TtlExpired Then
            'add the currently returned address
            result.Add(reply.Address)
            'recurse to get the next address...
            Dim tempResult As IEnumerable(Of IPAddress)
            tempResult = GetTraceRoute(hostNameOrAddress, ttl + 1)
            result.AddRange(tempResult)
        Else
            'failure 
        End If

        Return result
    End Function
End Class

Answer 3

下面是一个明显好C#执行情况 tracert 于存在其他的答案为止。

public static IEnumerable<IPAddress> GetTraceRoute(string hostname)
{
    // following are the defaults for the "traceroute" command in unix.
    const int timeout = 10000;
    const int maxTTL = 30;
    const int bufferSize = 32;

    byte[] buffer = new byte[bufferSize];
    new Random().NextBytes(buffer);
    Ping pinger = new Ping();

    for (int ttl = 1; ttl <= maxTTL; ttl++)
    {
        PingOptions options = new PingOptions(ttl, true);
        PingReply reply = pinger.Send(hostname, timeout, buffer, options);

        if (reply.Status == IPStatus.TtlExpired)
        {
            // TtlExpired means we've found an address, but there are more addresses
            yield return reply.Address;
            continue;
        }
        if (reply.Status == IPStatus.TimedOut)
        {
            // TimedOut means this ttl is no good, we should continue searching
            continue;
        }
        if (reply.Status == IPStatus.Success)
        {
            // Success means the tracert has completed
            yield return reply.Address;
        }

        // if we ever reach here, we're finished, so break
        break;
    }
}

陷阱固定在这里，是目前在其他的答案包括：

• 这是懒惰。例如：它正确地使用可枚举/迭代使没有计算整个树，你可以停止在任何时候通过打破了你自己的消耗循环。
• maxTTL 实施这样的功用不上旋转永远。
• bufferSize 选项，这是符合其他的跟踪实现。
• 这是超级简洁和清洗。这是包含在单一的方法是大大短于其他的选择在这里。

Answer 4

对于ping部分，请查看在MSDN上Ping类。

Answer 5

由于对上述Scotts代码答案的改进，我发现如果路线在到达目的地之前逐渐变为零，他的解决方案不起作用 - 它永远不会返回。至少部分路线的更好的解决方案可能是这个（我已经测试过并且效果很好）。你可以将for循环中的'20'更改为更大或更小的东西，或者如果你想以其他方式控制迭代次数，则尝试检测它是否花费太长时间。斯科特完全赞同原始代码 - 谢谢。

    using System.Collections.Generic;
    using System.Net.NetworkInformation;
    using System.Text;
    using System.Net;

    ...

    public static void TraceRoute(string hostNameOrAddress)
    {
        for (int i = 1; i < 20; i++)
        {
            IPAddress ip = GetTraceRoute(hostNameOrAddress, i);
            if(ip == null)
            {
                break;
            }
            Console.WriteLine(ip.ToString());
        }
    }

    private static IPAddress GetTraceRoute(string hostNameOrAddress, int ttl)
    {
        const string Data = "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa";
        Ping pinger = new Ping();
        PingOptions pingerOptions = new PingOptions(ttl, true);
        int timeout = 10000;
        byte[] buffer = Encoding.ASCII.GetBytes(Data);
        PingReply reply = default(PingReply);

        reply = pinger.Send(hostNameOrAddress, timeout, buffer, pingerOptions);

        List<IPAddress> result = new List<IPAddress>();
        if (reply.Status == IPStatus.Success || reply.Status == IPStatus.TtlExpired)
        {
            return reply.Address;
        }
        else
        {
            return null;
        }
    }

Answer 6

Ping ：我们可以使用 Ping 类内置于.NET Framework中。

实例化 Ping 并订阅 PingCompleted 事件：

Ping pingSender = new Ping();
pingSender.PingCompleted += PingCompletedCallback;

添加代码以配置和操作ping，例如：

string data = "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa";
byte[] buffer = Encoding.ASCII.GetBytes(data);
string who = "www.google.com";
AutoResetEvent waiter = new AutoResetEvent(false);
int timeout = 12000;

PingOptions options = new PingOptions(64, true);

pingSender.SendAsync(who, timeout, buffer, options, waiter);

添加 <代码> PingCompletedEventHandler ：

public static void PingCompletedCallback(object sender, PingCompletedEventArgs e)
{
    ... Do stuff here
}

完整工作示例的代码转储，基于 MSDN的例子：

public static void Main(string[] args)
{
    string who = "www.google.com";
    AutoResetEvent waiter = new AutoResetEvent(false);

    Ping pingSender = new Ping();

    // When the PingCompleted event is raised,
    // the PingCompletedCallback method is called.
    pingSender.PingCompleted += PingCompletedCallback;

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

    // Wait 12 seconds for a reply.
    int timeout = 12000;

    // 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);

    Console.WriteLine("Time to live: {0}", options.Ttl);
    Console.WriteLine("Don't fragment: {0}", options.DontFragment);

    // Send the ping asynchronously.
    // Use the waiter as the user token.
    // When the callback completes, it can wake up this thread.
    pingSender.SendAsync(who, timeout, buffer, options, waiter);

    // Prevent this example application from ending.
    // A real application should do something useful
    // when possible.
    waiter.WaitOne();
    Console.WriteLine("Ping example completed.");
}

public static void PingCompletedCallback(object sender, PingCompletedEventArgs e)
{
    // If the operation was canceled, display a message to the user.
    if (e.Cancelled)
    {
        Console.WriteLine("Ping canceled.");

        // Let the main thread resume. 
        // UserToken is the AutoResetEvent object that the main thread 
        // is waiting for.
        ((AutoResetEvent)e.UserState).Set();
    }

    // If an error occurred, display the exception to the user.
    if (e.Error != null)
    {
        Console.WriteLine("Ping failed:");
        Console.WriteLine(e.Error.ToString());

        // Let the main thread resume. 
        ((AutoResetEvent)e.UserState).Set();
    }

    Console.WriteLine(<*>quot;Roundtrip Time: {e.Reply.RoundtripTime}");

    // Let the main thread resume.
    ((AutoResetEvent)e.UserState).Set();
}