private void RaiseOnHopPing(IPRouteHop hop)
{
if (OnHopPing != null)
{
OnHopPing(this, hop);
}
}
private void PingHop(IPRouteHop hop)
{
if (!CheckStop())
{
_ping.SendAsync(hop.Address, _timeout, hop);
}
}
private void RaiseOnHopSuccess(IPRouteHop hop)
{
if (OnHopSuccess != null)
{
OnHopSuccess(this, hop);
}
}
void _ping_PingCompleted(object sender, PingCompletedEventArgs e)
{
if (e.UserState == null)
{
if (e.Reply.Status == IPStatus.TtlExpired || e.Reply.Status == IPStatus.Success)
{
IPRouteHop hop = new IPRouteHop(e.Reply.Address, _currentHop, _pingsPerHop);
_route.Add(hop);
_nameResolver.ResolveHostName(e.Reply.Address, new AsyncHostNameResolver.StoreHostNameDelegate(hop.StoreHostName));
RaiseOnHopSuccess(hop);
_currentHop++;
PingHop(hop);
}
else
{
RaiseOnHopFail(_currentHop, _currentRetry, e.Reply.Address, e.Reply.Status);
if (_currentRetry < _hopRetries)
{
_currentRetry++;
NextHop();
}
else
{
lock (_runControlLock)
{
_active = false;
_stopEvent.Set();
}
RaiseOnTraceCompleted(TraceStatus.Failed);
}
}
}
else
{
IPRouteHop hop = (IPRouteHop)e.UserState;
hop.StorePingResult(e.Reply.Status == IPStatus.Success ? e.Reply.RoundtripTime : -1);
RaiseOnHopPing(hop);
if (!hop.Complete)
{
PingHop(hop);
}
else if (!hop.Address.Equals(_target))
{
NextHop();
}
else
{
lock (_runControlLock)
{
_active = false;
_stopEvent.Set();
}
RaiseOnTraceCompleted(TraceStatus.Successed);
}
}
}