private void ThreadPingSetup()
{
pingConnection = new Thread(() =>
{
Ping pingSender = new Ping();
while (true)
{
List <Person> listP = PersonOne.ToList();
Thread.Sleep(1500);
foreach (Person p in listP)
{
PingReply reply = pingSender.Send(IPAddress.Parse(p.IP));
bool b = true;
if (reply.Status != IPStatus.Success)
{
Dispatcher.Invoke(new Action(() =>
{
PersonOne.Remove(p);
}));
}
}
}
});
pingConnection.Start();
}
private Person searchIp(string ipforSearch)
{
List <Person> listTemp = PersonOne.ToList();
foreach (Person p in listTemp)
{
if (p.IP.Equals(ipforSearch))
{
return(p);
}
}
return(null);
}
private void ThreadReceivingAnnSetup()
{
receivingAnnouncement = new Thread(() =>
{
//Creates a UdpClient for reading incoming data.
UdpClient receivingUdpClient = new UdpClient(port);
receivingUdpClient.JoinMulticastGroup(IPAddress.Parse("224.0.0.2"));
//Creates an IPEndPoint to record the IP Address and port number of the sender.
// The IPEndPoint will allow you to read datagrams sent from any source.
IPEndPoint RemoteIpEndPoint = new IPEndPoint(IPAddress.Any, port);
receivingUdpClient.EnableBroadcast = true;
receivingUdpClient.Client.SetIPProtectionLevel(IPProtectionLevel.Unrestricted);
//receivingUdpClient.MulticastLoopback = false;
try
{
while (true)
{
int i = 0;
byte[] name1 = null;
byte[] image = null;
int length = 0;
// Blocks until a message returns on this socket from a remote host.
Byte[] receiveBytes = receivingUdpClient.Receive(ref RemoteIpEndPoint);
string ipforSearch = RemoteIpEndPoint.Address.ToString();
length = BitConverter.ToInt32(receiveBytes, i);
if (ipforSearch.Equals(IPAddress.Loopback.ToString()))
{
ipforSearch = App.app.broadcastCalculation().ToString();
}
bool found = false;
if (ipforSearch.Equals(IPAddress.Loopback.ToString()))
{
length = 0;
}
IPAddress myIp = App.app.broadcastCalculation();
foreach (IPAddress ip in App.app.myIp)
{
if (ip.Equals(RemoteIpEndPoint.Address))
{
found = true;
}
}
if (!Properties.Settings.Default.DiscoverySelf && found)
{
length = 0;
}
//if (!myIp.Equals(IPAddress.Parse(ipforSearch)) && found) length=0;
if (length == 0)
{
Ping pingSender = new Ping();
IPAddress address = RemoteIpEndPoint.Address;
PingReply reply = pingSender.Send(address);
bool b = true;
if (reply.Status == IPStatus.Success)
{
b = true;
}
else
{
b = false;
}
Dispatcher.Invoke(new Action(() =>
{
List <Person> tmp = PersonOne.ToList();
foreach (Person p in tmp)
{
if (p.IP.Equals(ipforSearch))
{
if (!p.tick || !b)
{
foreach (ToSend o in send_list.ToList())
{
if (o.ip.Equals(ipforSearch))
{
insertDeleteSendList(o, false);
}
}
PersonOne.Remove(p);
}
else
{
foreach (ToSend o in send_list.ToList())
{
if (o.ip.Equals(ipforSearch))
{
if (o.bkgWorker == null)
{
insertDeleteSendList(o, false);
PersonOne.Remove(p);
break;
}
o.o = PersonOne;
o.index = p;
}
}
}
}
}
}));
continue;
}
i += 4;
name1 = new byte[length];
for (int j = 0; j < length; j++)
{
name1[j] = receiveBytes[i + j];
}
i += length;
length = BitConverter.ToInt32(receiveBytes, i);
// MemoryStream stream = receiveImage(RemoteIpEndPoint.Address);
person = searchIp(ipforSearch);
if (person != null)
{
if (person.tick)
{
continue;
}
}
if (person == null || person.change != length)
{
image = receiveImage(RemoteIpEndPoint.Address);
Dispatcher.Invoke(System.Windows.Threading.DispatcherPriority.Send, new Action(() =>
{
if (person != null)
{
int index = PersonOne.IndexOf(person);
bool tick = person.tick;
PersonOne.RemoveAt(index);
person = new Person();
person.Name = Encoding.ASCII.GetString(name1);
person.IP = RemoteIpEndPoint.Address.ToString();
person.Image = ByteArraytoBitmap(image);//StreamtoBitmap(stream);// new BitmapImage(
person.change = length;
person.tick = tick;
PersonOne.Insert(index, person);
return;
}
person = new Person();
person.Name = Encoding.ASCII.GetString(name1);
person.change = length;
person.tick = false;
person.IP = RemoteIpEndPoint.Address.ToString();
person.Image = ByteArraytoBitmap(image);//StreamtoBitmap(stream);// new BitmapImage(Uri);
PersonOne.Add(person);
}));
}
else
{
if (Encoding.ASCII.GetString(name1).Equals(person.Name))
{
continue;
}
Dispatcher.Invoke(System.Windows.Threading.DispatcherPriority.Send, new Action(() =>
{
int index = PersonOne.IndexOf(person);
PersonOne.RemoveAt(index);
person.Name = Encoding.ASCII.GetString(name1);
PersonOne.Insert(index, person);
}));
}
}
}
catch (Exception)
{ }
finally {
receivingUdpClient.Close();
}
});
}