public PdServer()
{
_socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp)
{
NoDelay = true
};
Client = new PdClient();
}
public void Handle(PdClient client, Packet packet)
{
PacketHandlerFunc handler;
if (!_handlers.TryGetValue(packet.Op, out handler))
{
this.UnknownPacket(client, packet);
return;
}
handler(client, packet);
}
public void UnknownPacket(PdClient client, Packet packet)
{
Log.Unimplemented("PacketHandlerManager: Handler for '{0:X4}'", packet.Op);
Log.Debug(packet);
}
protected virtual void OnServerLostConnection(PdClient client)
{
if (ServerLostConnection == null)
{
this.OnServerDisconnected(client);
return;
}
ServerLostConnection(client);
}
protected virtual void OnServerDisconnected(PdClient client)
{
if (ServerDisconnected == null) return;
ServerDisconnected(client);
}
private void RemoveClient(PdClient client)
{
Client = null;
}
private void OnConnect(IAsyncResult ar)
{
PdClient instance = new PdClient();
try
{
instance.Socket = (Socket) ar.AsyncState;
instance.Socket.EndConnect(ar);
instance.Socket.BeginReceive(instance.Buffer, 0, instance.Buffer.Length, SocketFlags.None, OnReceive,
instance);
Client = instance;
OnServerConnected(instance);
}
catch (ObjectDisposedException ex)
{
}
catch (Exception ex)
{
MessageBox.Show(string.Format("Error occured when attempting to connect to the server.\r\n{0}\r\n{1}", ex.Message, ex.StackTrace));
Log.Exception(ex);
}
}
private void KillAndRemoveClient(PdClient client)
{
client.Kill();
RemoveClient(client);
}
private void HandleBuffer(PdClient client, byte[] buffer)
{
var length = buffer.Length;
Array.Resize(ref buffer, length -= 4);
BitConverter.GetBytes(length).CopyTo(buffer, 1);
if (buffer[5] == 0x01)
{
BitConverter.GetBytes(BitConverter.ToUInt32(buffer, 6) ^ 0x98BADCFE).CopyTo(buffer, 6);
client.Socket.Send(buffer);
}
else
{
// First packet, skip challenge and send success msg.
if (client.State == ClientState.BeingChecked)
{
client.Send(new byte[] {0x88, 0x07, 0x00, 0x00, 0x00, 0x00, 0x07});
client.State = ClientState.LoggingIn;
}
// Actual packets
else
{
// Start reading after the protocol header
var packet = new Packet(buffer, 6);
//Logger.Debug(packet);
try
{
this.Handlers.Handle(client, packet);
}
catch (Exception ex)
{
Log.Exception(ex, "There has been a problem while handling '{0:X4}'.", packet.Op);
}
}
}
}
