private void UdpListenerThread()
{
try
{
var localHost = SmartSocketClient.FindLocalHostName();
List <string> addresses = SmartSocketClient.FindLocalIpAddresses();
if (localHost == null || addresses.Count == 0)
{
return; // no network.
}
IPEndPoint remoteEP = new IPEndPoint(this.GroupAddress, this.GroupPort);
this.UdpListener = new UdpClient(this.GroupPort);
this.UdpListener.JoinMulticastGroup(this.GroupAddress);
while (true)
{
byte[] data = this.UdpListener.Receive(ref remoteEP);
if (data != null)
{
BinaryReader reader = new BinaryReader(new MemoryStream(data));
int len = reader.ReadInt32();
string msg = reader.ReadString();
if (msg == this.ServiceName)
{
// send response back with info on how to connect to this server.
IPEndPoint localEp = (IPEndPoint)this.Listener.LocalEndPoint;
string addr = localEp.ToString();
MemoryStream ms = new MemoryStream();
BinaryWriter writer = new BinaryWriter(ms);
writer.Write(addr.Length);
writer.Write(addr);
writer.Flush();
byte[] buffer = ms.ToArray();
this.UdpListener.Send(buffer, buffer.Length, remoteEP);
}
}
}
}
catch (Exception)
{
// UdpListenerThread failed
}
}
private void OnAccept(Socket client)
{
IPEndPoint ep1 = client.RemoteEndPoint as IPEndPoint;
SmartSocketClient proxy = new SmartSocketClient(this, client, this.Resolver)
{
Name = ep1.ToString(),
ServerName = SmartSocketClient.FindLocalHostName()
};
proxy.Disconnected += this.OnClientDisconnected;
SmartSocketClient[] snapshot = null;
lock (this.Clients)
{
snapshot = this.Clients.ToArray();
}
foreach (SmartSocketClient s in snapshot)
{
IPEndPoint ep2 = s.Socket.RemoteEndPoint as IPEndPoint;
if (ep1 == ep2)
{
// can only have one client using this end point.
this.RemoveClient(s);
}
}
lock (this.Clients)
{
this.Clients.Add(proxy);
}
if (this.ClientConnected != null)
{
this.ClientConnected(this, proxy);
}
}
