TCP Traceroute in C #

It is not true that you need to handle packets if you want to do traceroute in C #. Traceroute consists of many messages with TTLs from 1 to n, and this can be archived with the Ping.Net framework class.

Here's my old code, it's not pretty, but it should work:

    /// <summary>
    /// Performs a pathping
    /// </summary>
    /// <param name="ipaTarget">The target</param>
    /// <param name="iHopcount">The maximum hopcount</param>
    /// <param name="iTimeout">The timeout for each ping</param>
    /// <returns>An array of PingReplys for the whole path</returns>
    public PingReply[] PerformPathping(IPAddress ipaTarget, int iHopcount, int iTimeout)
    {
        System.Collections.ArrayList arlPingReply = new System.Collections.ArrayList();
        Ping myPing = new Ping();
        PingReply prResult;
        for (int iC1 = 1; iC1 < iHopcount; iC1++)
        {
            prResult = myPing.Send(ipaTarget, iTimeout, new byte[10], new PingOptions(iC1, false));
            if (prResult.Status == IPStatus.Success)
            {
                iC1 = iHopcount;
            }
            arlPingReply.Add(prResult);
        }
        PingReply[] prReturnValue = new PingReply[arlPingReply.Count];
        for (int iC1 = 0; iC1 < arlPingReply.Count; iC1++)
        {
            prReturnValue[iC1] = (PingReply)arlPingReply[iC1];
        }
        return prReturnValue;
    }