public static void GameUpdateHandler(IPEndPoint ep, byte[] bytesReceived)
{
Console.WriteLine("Received 'Game Update' Packet from {0}:{1}", bytesReceived.Length, ep.Address, ep.Port);
ClientGamePacket packet = GetGamePacketFromBytes(bytesReceived);
bool accepted = true;
for (int i = 0; i < players.Count; i++)
{
if (packet.ID == players[i].ID)
{
if (players[i].ep == null)
{
players[i] = SetPlayerEP(players[i], ep);
}
if (players[i].dead)
{
accepted = false;
}
break;
}
}
if (CheckPlayerLogged(packet.ID) && accepted)
{
Broadcast(ConnectionType.UDP, GetBytesFromPacket(packet));
}
}
protected override void OnData(byte[] data)
{
using (var stream = new MemoryStream(data))
using (var reader = new GamePacketReader(stream))
{
while (stream.Remaining() != 0)
{
// no packet on deck waiting for additional information, new data will be part of a new packet
if (onDeck == null)
{
uint size = reader.ReadUInt();
onDeck = new FragmentedBuffer(size - sizeof(uint));
}
onDeck.Populate(reader);
if (onDeck.IsComplete)
{
var packet = new ClientGamePacket(onDeck.Data);
incomingPackets.Enqueue(packet);
onDeck = null;
}
}
}
}
public void HandleEncryptedPacket(ClientEncrypted encrypted)
{
byte[] data = encryption.Decrypt(encrypted.Data, encrypted.Data.Length);
var packet = new ClientGamePacket(data);
HandlePacket(packet);
}
protected void HandlePacket(ClientGamePacket packet)
{
IReadable message = MessageManager.GetMessage(packet.Opcode);
if (message == null)
{
log.Warn($"Received unknown packet {packet.Opcode:X}");
return;
}
MessageHandlerDelegate handlerInfo = MessageManager.GetMessageHandler(packet.Opcode);
if (handlerInfo == null)
{
log.Warn($"Received unhandled packet {packet.Opcode}(0x{packet.Opcode:X}).");
return;
}
if (packet.Opcode != GameMessageOpcode.ClientEncrypted &&
packet.Opcode != GameMessageOpcode.ClientPacked &&
packet.Opcode != GameMessageOpcode.ClientPackedWorld &&
packet.Opcode != GameMessageOpcode.ClientEntityCommand)
{
log.Trace($"Received packet {packet.Opcode}(0x{packet.Opcode:X}).");
}
// FIXME workaround for now. possible performance impact.
// ClientPing does not currently work and the session times out after 300s -> this keeps the session alive if -any- client packet is received
Heartbeat.OnHeartbeat();
using (var stream = new MemoryStream(packet.Data))
using (var reader = new GamePacketReader(stream))
{
message.Read(reader);
if (reader.BytesRemaining > 0)
{
log.Warn($"Failed to read entire contents of packet {packet.Opcode}");
}
try
{
handlerInfo.Invoke(this, message);
}
catch (InvalidPacketValueException exception)
{
log.Error(exception);
RequestedDisconnect = true;
}
catch (Exception exception)
{
log.Error(exception);
}
}
}
static ClientGamePacket GetGamePacketFromBytes(byte[] buffer)
{
ClientGamePacket packet = new ClientGamePacket();
int size = Marshal.SizeOf(packet);
IntPtr ptr = Marshal.AllocHGlobal(size);
Marshal.Copy(buffer, 0, ptr, size);
packet = (ClientGamePacket)Marshal.PtrToStructure(ptr, packet.GetType());
Marshal.FreeHGlobal(ptr);
return(packet);
}
static byte[] GetBytesFromPacket(ClientGamePacket packet)
{
int size = Marshal.SizeOf(packet);
byte[] bytes = new byte[size];
IntPtr ptr = Marshal.AllocHGlobal(size);
Marshal.StructureToPtr(packet, ptr, true);
Marshal.Copy(ptr, bytes, 0, size);
Marshal.FreeHGlobal(ptr);
return(bytes);
}
private void HandlePacket(ClientGamePacket packet)
{
IReadable message = MessageManager.GetMessage(packet.Opcode);
if (message == null)
{
log.Warn($"Received unknown packet {packet.Opcode:X}");
return;
}
MessageHandlerDelegate handlerInfo = MessageManager.GetMessageHandler(packet.Opcode);
if (handlerInfo == null)
{
log.Warn($"Received unhandled packet {packet.Opcode}(0x{packet.Opcode:X}).");
return;
}
if (packet.Opcode != GameMessageOpcode.ClientEncrypted &&
packet.Opcode != GameMessageOpcode.ClientPacked &&
packet.Opcode != GameMessageOpcode.ClientEntityCommand)
{
log.Trace($"Received packet {packet.Opcode}(0x{packet.Opcode:X}).");
}
using (var stream = new MemoryStream(packet.Data))
using (var reader = new GamePacketReader(stream))
{
message.Read(reader);
if (reader.BytesRemaining > 0)
{
log.Warn($"Failed to read entire contents of packet {packet.Opcode}");
}
try
{
handlerInfo.Invoke(this, message);
}
catch (InvalidPacketValueException exception)
{
log.Error(exception);
OnDisconnect();
}
catch (Exception exception)
{
log.Error(exception);
}
}
}
public void HandleEncryptedPacket(ClientEncrypted encrypted)
{
byte[] data = encryption.Decrypt(encrypted.Data, encrypted.Data.Length);
// TODO: research this...
if (data[0] == 0x8C)
{
byte[] dataHack = new byte[data.Length - 7];
Buffer.BlockCopy(data, 7, dataHack, 0, dataHack.Length);
var packet = new ClientGamePacket(dataHack);
HandlePacket(packet);
}
else
{
var packet = new ClientGamePacket(data);
HandlePacket(packet);
}
}
public void HandlePacked(ClientPacked packed)
{
var packet = new ClientGamePacket(packed.Data);
HandlePacket(packet);
}