// Constructor
public RouteNodeFoundEventArgs(TraceRtNode node)
{
this.node = node;
}
// This displays the specified job index
private void DisplayJob(int displayindex)
{
routearrow.Visible = false;
// Update buttons
for (int i = 0; i < routebuttons.Length; i++)
{
if (i == displayindex)
{
if (jobs[displayindex].targetreachable)
{
routebuttons[i].StartInfoFlash();
}
else
{
routebuttons[i].StartWarningFlash();
}
}
else
{
routebuttons[i].StopInfoFlash();
routebuttons[i].StopWarningFlash();
}
}
TraceJob j = jobs[displayindex];
int offset = (j.nodes.Count <= 11) ? 0 : j.nodes.Count - addresslabels.Length;
while ((offset > 0) && (j.nodes[offset + 10].HostAddress == null))
{
offset--;
}
if (j.nodes.Count == 0)
{
// Setup all labels
for (int i = 0; i < addresslabels.Length; i++)
{
hostlabels[i].Visible = false;
addresslabels[i].Visible = false;
pinglabels[i].Visible = false;
hostlabels[i].Text = "";
addresslabels[i].Text = "";
pinglabels[i].Text = "";
}
hostlabels[1].Text = " Trace route not available.";
addresslabels[1].Text = "";
pinglabels[1].Text = "";
}
else
{
// Setup all labels
for (int i = 0; i < addresslabels.Length; i++)
{
hostlabels[i].Visible = false;
addresslabels[i].Visible = false;
pinglabels[i].Visible = false;
int nindex = offset + i;
if (nindex < j.nodes.Count)
{
TraceRtNode n = j.nodes[nindex];
if (!string.IsNullOrEmpty(n.HostName))
{
hostlabels[i].Text = n.HostName;
}
else
{
hostlabels[i].Text = "(Unknown Routepoint)";
}
if (n.HostAddress != null)
{
addresslabels[i].Text = n.HostAddress.ToString();
addresslabels[i].ColorText = ColorIndex.ControlColor4;
pinglabels[i].Text = n.RoundTripTime + " ms";
if (n.RoundTripTime > 500)
{
pinglabels[i].ColorText = ColorIndex.ControlColorNegative;
}
else
{
pinglabels[i].ColorText = ColorIndex.ControlColor3;
}
}
else
{
pinglabels[i].Text = "N/A";
pinglabels[i].ColorText = ColorIndex.ControlColorNegative;
addresslabels[i].Text = "(Unreachable)";
addresslabels[i].ColorText = ColorIndex.ControlColorNegative;
}
addresslabels[i].SetupColors(General.Colors);
pinglabels[i].SetupColors(General.Colors);
}
else
{
hostlabels[i].Text = "";
addresslabels[i].Text = "";
pinglabels[i].Text = "";
}
}
}
}
// Constructor
public RouteNodeFoundEventArgs(TraceRtNode node)
{
this.node = node;
}
// This performs the trace
private void TraceThread()
{
Random rnd = new Random();
PingReply pingreply;
IPHostEntry hostentry;
bool routecomplete = false;
Ping ping = new Ping();
PingOptions pingoptions;
IPAddress destip = null;
try
{
// Resolve target address
IPHostEntry destentry = Dns.GetHostEntry(destaddr);
destip = destentry.AddressList[rnd.Next(destentry.AddressList.Length)];
// Check if destination responds
pingoptions = new PingOptions(maxhops, true);
pingreply = ping.Send(destip, pingtimeout, pingdata, pingoptions);
destresponse = (pingreply.Status == IPStatus.Success);
}
catch(Exception)
{
destresponse = false;
}
if(destip != null)
{
// Start tracing
int routedepth = 1;
do
{
DateTime starttime = DateTime.Now;
// Send ping to destination
// The routedepth will limit the number of hops the ping will take
pingoptions = new PingOptions(routedepth, true);
pingreply = ping.Send(destip, pingtimeout, pingdata, pingoptions);
if(pingreply.Address != null)
{
if(pingreply.Status == IPStatus.Success)
{
// Destination reached
routecomplete = true;
}
else
{
// Now we need to ping the address returned to figure out the RTT
// Stupid how the Ping calss can't measure the time even when the TTL expired
pingoptions = new PingOptions(maxhops, true);
pingreply = ping.Send(pingreply.Address, pingtimeout, pingdata, pingoptions);
}
try
{
// Find the hostname for the address
hostentry = Dns.GetHostEntry(pingreply.Address);
}
catch(Exception)
{
hostentry = null;
}
}
else
{
hostentry = null;
}
// Store the node
TraceRtNode n = new TraceRtNode(pingreply, hostentry);
lock(this)
{
nodes.Add(n);
}
try
{
// Delay until next ping to prevent flooding the network
DateTime endtime = DateTime.Now;
TimeSpan deltatime = endtime - starttime;
if((int)deltatime.TotalMilliseconds < flooddelay)
Thread.Sleep(flooddelay - (int)deltatime.TotalMilliseconds);
}
catch(ThreadInterruptedException e)
{
return;
}
routedepth++;
}
while(!routecomplete && (routedepth <= maxhops));
}
// Done!
this.destreached = routecomplete;
this.tracethread = null;
if(TraceComplete != null)
TraceComplete(this, EventArgs.Empty);
}
// This performs the trace
private void TraceThread()
{
Random rnd = new Random();
PingReply pingreply;
IPHostEntry hostentry;
bool routecomplete = false;
Ping ping = new Ping();
PingOptions pingoptions;
IPAddress destip = null;
try
{
// Resolve target address
IPHostEntry destentry = Dns.GetHostEntry(destaddr);
destip = destentry.AddressList[rnd.Next(destentry.AddressList.Length)];
// Check if destination responds
pingoptions = new PingOptions(maxhops, true);
pingreply = ping.Send(destip, pingtimeout, pingdata, pingoptions);
destresponse = (pingreply.Status == IPStatus.Success);
}
catch (Exception)
{
destresponse = false;
}
if (destip != null)
{
// Start tracing
int routedepth = 1;
do
{
DateTime starttime = DateTime.Now;
// Send ping to destination
// The routedepth will limit the number of hops the ping will take
pingoptions = new PingOptions(routedepth, true);
pingreply = ping.Send(destip, pingtimeout, pingdata, pingoptions);
if (pingreply.Address != null)
{
if (pingreply.Status == IPStatus.Success)
{
// Destination reached
routecomplete = true;
}
else
{
// Now we need to ping the address returned to figure out the RTT
// Stupid how the Ping calss can't measure the time even when the TTL expired
pingoptions = new PingOptions(maxhops, true);
pingreply = ping.Send(pingreply.Address, pingtimeout, pingdata, pingoptions);
}
try
{
// Find the hostname for the address
hostentry = Dns.GetHostEntry(pingreply.Address);
}
catch (Exception)
{
hostentry = null;
}
}
else
{
hostentry = null;
}
// Store the node
TraceRtNode n = new TraceRtNode(pingreply, hostentry);
lock (this)
{
nodes.Add(n);
}
try
{
// Delay until next ping to prevent flooding the network
DateTime endtime = DateTime.Now;
TimeSpan deltatime = endtime - starttime;
if ((int)deltatime.TotalMilliseconds < flooddelay)
{
Thread.Sleep(flooddelay - (int)deltatime.TotalMilliseconds);
}
}
catch (ThreadInterruptedException e)
{
return;
}
routedepth++;
}while(!routecomplete && (routedepth <= maxhops));
}
// Done!
this.destreached = routecomplete;
this.tracethread = null;
if (TraceComplete != null)
{
TraceComplete(this, EventArgs.Empty);
}
}
