public void StartSearchBroadCasting(ServerFound cbServerFound, ServerNotFound cbServerNotFound, int port)
{
this.cbServerFound = cbServerFound;
this.cbServerNotFound = cbServerNotFound;
StartBroadcasting();
StartSearching();
}
void onServerFound(IPAddress address)
{
this.control.Invoke((MethodInvoker)(() =>
{
ServerFound?.Invoke(address);
}));
}
public void StartFindingServer(int sendPort, int receivePort, ServerFound onServerFound)
{
StopFindingServer();
_finding = true;
_onServerFound = onServerFound;
_reciveUdpClient = new UdpClient(receivePort);
_sendUdpClient = new UdpClient();
_sendUdpClient.EnableBroadcast = true;
_broadcastIpEndPoint = new IPEndPoint(IPAddress.Broadcast, sendPort);
StartReceivingServerReply();
StartSendingServerRequest();
}
void NetworkThread()
{
sw = Stopwatch.StartNew();
var listener = new EventBasedNetListener();
client = new NetManager(listener)
{
UnconnectedMessagesEnabled = true,
IPv6Enabled = true,
NatPunchEnabled = true,
ChannelsCount = 3
};
listener.NetworkReceiveUnconnectedEvent += (remote, msg, type) =>
{
if (type == UnconnectedMessageType.Broadcast)
{
return;
}
if (msg.GetInt() == 0)
{
lock (srvinfo)
{
foreach (var info in srvinfo)
{
if (info.EndPoint.Equals(remote))
{
var t = sw.ElapsedMilliseconds;
info.Ping = (int)(t - info.LastPingTime);
if (info.Ping < 0)
{
info.Ping = 0;
}
}
}
}
}
else if (ServerFound != null)
{
var info = new LocalServerInfo();
info.EndPoint = remote;
info.Unique = msg.GetInt();
info.Name = msg.GetString();
info.Description = msg.GetString();
info.DataVersion = msg.GetString();
info.CurrentPlayers = msg.GetInt();
info.MaxPlayers = msg.GetInt();
info.LastPingTime = sw.ElapsedMilliseconds;
NetDataWriter writer = new NetDataWriter();
writer.Put(LNetConst.PING_MAGIC);
client.SendUnconnectedMessage(writer, remote);
lock (srvinfo)
{
bool add = true;
for (int i = 0; i < srvinfo.Count; i++)
{
if (srvinfo[i].Unique == info.Unique)
{
add = false;
//Prefer IPv6
if (srvinfo[i].EndPoint.AddressFamily != AddressFamily.InterNetwork &&
info.EndPoint.AddressFamily == AddressFamily.InterNetwork)
{
srvinfo[i].EndPoint = info.EndPoint;
}
break;
}
}
if (add)
{
srvinfo.Add(info);
mainThread.QueueUIThread(() => ServerFound?.Invoke(info));
}
}
}
msg.Recycle();
};
listener.NetworkReceiveEvent += (peer, reader, method) =>
{
try
{
var packetCount = reader.GetByte(); //reliable packets can be merged
if (packetCount > 1)
{
FLLog.Debug("Net", $"Received {packetCount} merged packets");
}
for (int i = 0; i < packetCount; i++)
{
var pkt = Packets.Read(reader);
if (connecting)
{
if (pkt is AuthenticationPacket)
{
var auth = (AuthenticationPacket)pkt;
FLLog.Info("Net", "Authentication Packet Received");
if (auth.Type == AuthenticationKind.Token)
{
FLLog.Info("Net", "Token");
var str = reader.GetString();
mainThread.QueueUIThread(() => AuthenticationRequired(str));
}
else if (auth.Type == AuthenticationKind.GUID)
{
FLLog.Info("Net", "GUID");
SendPacket(new AuthenticationReplyPacket()
{
Guid = this.UUID
},
PacketDeliveryMethod.ReliableOrdered);
}
}
else if (pkt is LoginSuccessPacket)
{
FLLog.Info("Client", "Login success");
connecting = false;
}
else
{
client.DisconnectAll();
}
}
else
{
packets.Enqueue(pkt);
}
}
}
catch (Exception e)
{
FLLog.Error("Client", "Error reading packet");
client.DisconnectAll();
}
};
listener.PeerDisconnectedEvent += (peer, info) =>
{
mainThread.QueueUIThread(() => { Disconnected?.Invoke(info.Reason.ToString()); });
};
client.Start();
while (running)
{
if (Interlocked.Read(ref localPeerRequests) > 0)
{
Interlocked.Decrement(ref localPeerRequests);
var dw = new NetDataWriter();
dw.Put(LNetConst.BROADCAST_KEY);
client.SendBroadcast(dw, LNetConst.DEFAULT_PORT);
}
//ping servers
lock (srvinfo)
{
foreach (var inf in srvinfo)
{
var nowMs = sw.ElapsedMilliseconds;
if (nowMs - inf.LastPingTime > 2000) //ping every 2 seconds?
{
inf.LastPingTime = nowMs;
var om = new NetDataWriter();
om.Put(LNetConst.PING_MAGIC);
client.SendUnconnectedMessage(om, inf.EndPoint);
}
}
}
//events
client.PollEvents();
Thread.Sleep(1);
}
client.DisconnectAll();
client.Stop();
}
void NetworkThread()
{
sw = Stopwatch.StartNew();
var conf = new NetPeerConfiguration(NetConstants.DEFAULT_APP_IDENT);
conf.EnableMessageType(NetIncomingMessageType.UnconnectedData);
conf.DualStack = true;
client = new NetClient(conf);
client.Start();
NetIncomingMessage im;
while (running)
{
//ping servers
lock (srvinfo)
{
foreach (var inf in srvinfo)
{
var nowMs = (long)(NetTime.Now * 1000);
if (nowMs - inf.LastPingTime > 600)
{
inf.LastPingTime = nowMs;
var om = client.CreateMessage();
om.Write(NetConstants.PING_MAGIC);
client.SendUnconnectedMessage(om, inf.EndPoint);
}
}
}
while ((im = client.ReadMessage()) != null)
{
try
{
switch (im.MessageType)
{
case NetIncomingMessageType.DebugMessage:
case NetIncomingMessageType.ErrorMessage:
case NetIncomingMessageType.WarningMessage:
case NetIncomingMessageType.VerboseDebugMessage:
FLLog.Info("Lidgren", im.ReadString());
break;
case NetIncomingMessageType.UnconnectedData:
lock (srvinfo)
{
foreach (var info in srvinfo)
{
if (info.EndPoint.Equals(im.SenderEndPoint))
{
var t = (long)(im.ReceiveTime * 1000);
info.Ping = (int)(t - info.LastPingTime);
if (info.Ping < 0)
{
info.Ping = 0;
}
}
}
}
break;
case NetIncomingMessageType.DiscoveryResponse:
if (ServerFound != null)
{
var info = new LocalServerInfo();
info.EndPoint = im.SenderEndPoint;
info.Name = im.ReadString();
info.Description = im.ReadString();
info.DataVersion = im.ReadString();
info.CurrentPlayers = im.ReadInt32();
info.MaxPlayers = im.ReadInt32();
info.LastPingTime = sw.ElapsedMilliseconds;
var om = client.CreateMessage();
om.Write(NetConstants.PING_MAGIC);
client.SendUnconnectedMessage(om, info.EndPoint);
lock (srvinfo) srvinfo.Add(info);
mainThread.QueueUIThread(() => ServerFound?.Invoke(info));
}
break;
case NetIncomingMessageType.StatusChanged:
var status = (NetConnectionStatus)im.ReadByte();
if (status == NetConnectionStatus.Disconnected)
{
FLLog.Info("Net", "Disconnected");
var reason = im.ReadString();
mainThread.QueueUIThread(() => Disconnected?.Invoke(reason));
running = false;
}
break;
case NetIncomingMessageType.Data:
var pkt = im.ReadPacket();
if (connecting)
{
if (pkt is AuthenticationPacket)
{
var auth = (AuthenticationPacket)pkt;
FLLog.Info("Net", "Authentication Packet Received");
if (auth.Type == AuthenticationKind.Token)
{
FLLog.Info("Net", "Token");
var str = im.ReadString();
mainThread.QueueUIThread(() => AuthenticationRequired(str));
}
else if (auth.Type == AuthenticationKind.GUID)
{
FLLog.Info("Net", "GUID");
var response = client.CreateMessage();
response.Write(new AuthenticationReplyPacket()
{
Guid = this.UUID
});
client.SendMessage(response, NetDeliveryMethod.ReliableOrdered);
}
}
else if (pkt is LoginSuccessPacket)
{
connecting = false;
}
else
{
client.Disconnect("Invalid Packet");
}
}
else
{
packets.Enqueue(pkt);
}
break;
}
}
catch (Exception)
{
FLLog.Error("Net", "Error reading message of type " + im.MessageType.ToString());
throw;
}
client.Recycle(im);
}
Thread.Sleep(1);
}
FLLog.Info("Lidgren", "Client shutdown");
client.Shutdown("Shutdown");
}
public void StartDiscovery(int port, ServerFound callback)
{
this.callback = callback;
this.DiscoverLocalPeers(port);
}