private void ping_ChangeTimer(object sender, PingEventArgs pa)
{
//if (this.IsHandleCreated)
//{
BeginInvoke(new MethodInvoker(delegate()
{
if (pa.Message().Contains("Approximate round trip times in milli-seconds"))
{
string[] ltimes = pa.Message().Split(new Char[] { '=' });
int enrs = ltimes.Length;
string lval = ltimes[enrs - 1].Trim();
label12.Text = "Latency: " + lval;
try
{
if (lval.Contains("ms"))
{
string valg = lval.Substring(0, lval.Length - 2);
double dvalg = Convert.ToDouble(valg, CultureInfo.CurrentCulture);
dataChart3.UpdateChart(dvalg);
}
}
catch {; }
}
}));
//}
}
private void ping_Change(object sender, PingEventArgs pa)
{
BeginInvoke(new MethodInvoker(delegate()
{
rtBox1.Text += "\n" + pa.Message();
}));
}
private bool IsOffline()
{
ConnectionState flags = 0;
InternetGetConnectedState(ref flags, 0);
//bool isConnected = InternetGetConnectedState(ref flags, 0);
//bool isConfigured = (flags & ConnectionState.INTERNET_CONNECTION_CONFIGURED) != 0;
//bool isOffline = (flags & ConnectionState.INTERNET_CONNECTION_OFFLINE) != 0;
//bool isConnectedUsingModem = (flags & ConnectionState.INTERNET_CONNECTION_MODEM) != 0;
//bool isConnectedUsingLAN = (flags & ConnectionState.INTERNET_CONNECTION_LAN) != 0;
//bool isProxyUsed = (flags & ConnectionState.INTERNET_CONNECTION_PROXY) != 0;
//bool isRasEnabled = (flags & ConnectionState.INTERNET_RAS_INSTALLED) != 0;
if (((int)ConnectionState.INTERNET_CONNECTION_OFFLINE & (int)flags) != 0)
{
PingEventArgs pes = new PingEventArgs("No internet connection detected.");
Change(this, pes);
return(true);
}
return(false);
}
public void StartPing(object argument)
{
if (IsOffline())
{
return;
}
IPAddress ip = (IPAddress)argument;
//set options ttl=128 and no fragmentation
PingOptions options = new PingOptions(128, true);
//create a Ping object
Ping ping = new Ping();
//32 empty bytes buffer
byte[] data = new byte[32];
int received = 0;
List <long> responseTimes = new List <long>();
string resp = string.Empty;
//ping 4 times
for (int i = 0; i < 4; i++)
{
PingReply reply = ping.Send(ip, 1000, data, options);
if (reply != null)
{
switch (reply.Status)
{
case IPStatus.Success:
resp = "Reply from " + reply.Address + ": bytes=" + reply.Buffer.Length + " time=" + reply.RoundtripTime + "ms TTL=" + reply.Options.Ttl;
PingEventArgs pe = new PingEventArgs(resp);
Change(this, pe);
received++;
responseTimes.Add(reply.RoundtripTime);
break;
case IPStatus.TimedOut:
pe = new PingEventArgs("Request timed out.");
Change(this, pe);
break;
default:
pe = new PingEventArgs("Ping failed " + reply.Status.ToString());
Change(this, pe);
break;
}
}
else
{
PingEventArgs pe = new PingEventArgs("Ping failed for an unknown reason");
Change(this, pe);
}
reply = null;
}
ping.Dispose();
//statistics calculations
long averageTime = -1;
long minimumTime = 0;
long maximumTime = 0;
for (int i = 0; i < responseTimes.Count; i++)
{
if (i == 0)
{
minimumTime = responseTimes[i];
maximumTime = responseTimes[i];
}
else
{
if (responseTimes[i] > maximumTime)
{
maximumTime = responseTimes[i];
}
if (responseTimes[i] < minimumTime)
{
minimumTime = responseTimes[i];
}
}
averageTime += responseTimes[i];
}
StringBuilder statistics = new StringBuilder();
statistics.AppendLine();
statistics.AppendLine();
statistics.AppendFormat("Ping statistics for {0}:", ip.ToString());
statistics.AppendLine();
statistics.AppendFormat(" Packets: Sent = 4, " +
"Received = {0}, Lost = {1} <{2}% loss>,",
received, 4 - received, Convert.ToInt32(((4 - received) * 100) / 4));
statistics.AppendLine();
statistics.AppendLine();
//show only if loss is not 100%
if (averageTime != -1)
{
statistics.Append("Approximate round trip times in milli-seconds:");
statistics.AppendLine();
statistics.AppendFormat(" Minimum = {0}ms, " +
"Maximum = {1}ms, Average = {2}ms",
minimumTime, maximumTime, (long)(averageTime / received));
}
PingEventArgs pes = new PingEventArgs(statistics.ToString());
Change(this, pes);
}
