private void Send(Packet packet, bool encrypt)
{
var buffer = packet.Writer.GetBuffer();
if (encrypt)
{
buffer = _crypt.Encrypt(packet.Writer.GetBuffer());
}
var bufferLength = buffer.Length;
var length = (ushort)(bufferLength + 2); // Length includes itself
try
{
if (ServerMain.Instance.LogEnabled[0] && ServerMain.Instance.IPBlacklist.Contains(this?.EndPoint?.Address?.ToString()) == false)
{
Log.Info("[{2}] Attempting to send {0} to {1}.", Packets.GetName(packet.Id), this?._tcp?.Client?.RemoteEndPoint?.ToString(), this?.Character?.Name);
}
_ns.Write(BitConverter.GetBytes(length), 0, 2);
// Depend on what I want to do
_ns.Write(buffer, 0, bufferLength);
this.TimeSinceLastPacket = DateTime.Now.Ticks;
}
catch (Exception ex)
{
KillConnection(ex);
}
}
/// <summary>
/// This setup the listener for any packet that we have al
/// handled. This is a self-adding parser,
/// as long as you setup a handler, it will automatically get added in.
/// </summary>
/// <param name="id">unique identifier of the packet</param>
/// <param name="parser">the listener and processor of the packet</param>
private void SetParser(ushort id, Action <Packet> parser)
{
if (_parsers.ContainsKey(id))
{
Log.Error("Duplicated parser for packet ({0} {1} : 0x{1:X}).", Packets.GetName(id), id);
}
#if DEBUG
Log.Info("Loaded ({0} {1} : 0x{1:X}).", Packets.GetName(id), id);
#endif
_parsers[id] = parser;
}
private void OnData(IAsyncResult result)
{
try
{
_bytesToRead -= _ns.EndRead(result);
if (_bytesToRead > 0)
{
_ns.BeginRead(_buffer, _buffer.Length - _bytesToRead, _bytesToRead, OnData, null);
return;
}
// Combine the buffer for packetId and the data because we encrypt those together, we have to combine and decrypt them together
_buffer = packetId.Concat(_buffer).ToArray();
// Decrypt the buffer to retrieve the actual packetId and the data
if (_encrypt)
{
_buffer = this._crypt.Decrypt(_buffer).ToArray();
}
var packet = new Packet(this, BitConverter.ToUInt16(_buffer, 0), _buffer.Skip(2).ToArray());
var hexDump = SerializeWriter.HexDump(packet.Buffer);
if (ServerMain.Instance.LogEnabled[1] && ServerMain.Instance.IPBlacklist.Contains(this.EndPoint.Address.ToString()) == false)
{
Log.Info("Handling packet {0} ({1} id {2}, 0x{2:X}) on {3} at {4}.", "",
Packets.GetName(packet.Id), packet.Id, this.EndPoint.Port.ToString(), DateTime.Now.ToString());
Log.Info("HexDump {0}:{1}{2}", packet.Id, Environment.NewLine, hexDump);
}
_parent.Parse(packet);
_buffer = new byte[4];
_bytesToRead = _buffer.Length;
_ns.BeginRead(_buffer, 0, 4, OnHeader, null);
}
catch (Exception ex)
{
KillConnection(ex);
}
}
/// <summary>
/// Process the packet by running the action according to the packet identifier
/// </summary>
/// <param name="packet">byte[] object contains the identifier and the buffer</param>
public void Parse(Packet packet)
{
// Handle the packet.
if (_parsers.ContainsKey(packet.Id))
{
// Implementing Error Handling
_parsers[packet.Id](packet);
}
else
{
Log.Warning("Received unhandled packet {0} (id {1}, 0x{1:X}) on {2}.", Packets.GetName(packet.Id), packet.Id, _port);
}
}