public ICMP_PingResult Ping(String host, Int32 count = 4, Int32 timeout = 1000)
{
bool infinite = false;
ICMP_PingResult Result = new ICMP_PingResult();
// Resolve the specified IP address
IPAddress hostIP;
try
{
hostIP = Dns.Resolve(host).AddressList[0];
}
catch (Exception e)
{
throw new Exception("ICMP_Ping: Unable to resolve the specified hostname.", e);
}
Result.hostIP = hostIP;
// Start pinging
try {
Icmp icmp = new Icmp(hostIP);
TimeSpan ret;
while (infinite || count > 0)
{
try
{
ret = icmp.Ping(timeout);
if (ret.Equals(TimeSpan.MaxValue))
{
Result.Status = ICMP_Status.TimeOut;
}
else
{
Result.Status = ICMP_Status.Success;
Result.RoundtripMS.Add(ret.TotalMilliseconds);
}
if (1000 - ret.TotalMilliseconds > 0)
{
Thread.Sleep(1000 - (int)ret.TotalMilliseconds);
}
}
catch (Exception e)
{
throw new Exception("Network Error", e);
}
if (!infinite)
{
count--;
}
}
} catch {
throw new Exception("Error while pinging the specified host.");
}
return(Result);
}
public ICMP_PingResult Ping(String host, Int32 count = 4, Int32 timeout = 1000)
{
bool infinite = false;
ICMP_PingResult Result = new ICMP_PingResult();
// Resolve the specified IP address
IPAddress hostIP;
try
{
hostIP = Dns.Resolve(host).AddressList[0];
}
catch (Exception e)
{
throw new Exception("ICMP_Ping: Unable to resolve the specified hostname.",e);
}
Result.hostIP = hostIP;
// Start pinging
try {
Icmp icmp = new Icmp(hostIP);
TimeSpan ret;
while(infinite || count > 0)
{
try
{
ret = icmp.Ping(timeout);
if (ret.Equals(TimeSpan.MaxValue))
Result.Status = ICMP_Status.TimeOut;
else
{
Result.Status = ICMP_Status.Success;
Result.RoundtripMS.Add(ret.TotalMilliseconds);
}
if (1000 - ret.TotalMilliseconds > 0)
Thread.Sleep(1000 - (int)ret.TotalMilliseconds);
}
catch (Exception e)
{
throw new Exception("Network Error",e);
}
if (!infinite)
count--;
}
} catch {
throw new Exception("Error while pinging the specified host.");
}
return Result;
}
void UpdateEncoderList()
{
_event.WaitOne();
_event.Reset();
foreach (ListViewItem lvi in listView1.Items)
{
if (_done)
break;
StreamingEncoder encoder = (StreamingEncoder)lvi.Tag;
OysterEncoderController.Control oec =
new OysterEncoderController.Control(encoder.ControlAddress, encoder.ControlPort);
lvi.SubItems[3].Text = "Connecting";
Application.DoEvents();
if (oec.Open())
{
if (oec.IsRecording)
{
lvi.SubItems[2].Text = "Yes";
lvi.BackColor = Color.Cornsilk;
Application.DoEvents();
}
else
{
lvi.SubItems[2].Text = "No";
lvi.BackColor = Color.White;
Application.DoEvents();
}
oec.Close();
lvi.SubItems[3].Text = "Ready...";
lvi.Font = new Font(lvi.Font, FontStyle.Regular);
Application.DoEvents();
}
else
{
IPAddress ipAddress;
if (encoder.ControlAddress.Split(new char[] {'.'}).Length != 3)
{
IPHostEntry hostEntry = Dns.GetHostByName(encoder.ControlAddress);
ipAddress = hostEntry.AddressList[0];
}
else
{
byte[] addressBytes = ASCIIEncoding.ASCII.GetBytes(encoder.ControlAddress);
ipAddress = new IPAddress(addressBytes);
}
Icmp ping = new Icmp(ipAddress);
if (ping.Ping() > TimeSpan.FromMilliseconds(5000.0))
{
lvi.SubItems[2].Text = "???";
lvi.SubItems[3].Text = "Possibly disabled. Needs to be power cycled.";
lvi.ForeColor = Color.LightGray;
lvi.Font = new Font(lvi.Font, FontStyle.Bold);
Application.DoEvents();
}
else
{
lvi.Font = new Font(lvi.Font, FontStyle.Regular);
lvi.SubItems[2].Text = "Yes";
lvi.SubItems[3].Text = "Encoder refused connection. Usually means it is recording...";
lvi.BackColor = Color.Cornsilk;
Application.DoEvents();
}
}
oec = null;
Application.DoEvents();
}
_event.Set();
Application.DoEvents();
}
