public void Send(PacketOut packet)
{
try
{
if (!Connected)
{
return;
}
Log.WriteLine(LogType.Network, "Sending packet: {0}", packet.packetId);
if (!Connected)
{
return;
}
Byte[] Data = packet.ToArray();
int Length = Data.Length;
byte[] Packet = new byte[2 + Length];
Packet[0] = (byte)(Length >> 8);
Packet[1] = (byte)(Length & 0xff);
Data.CopyTo(Packet, 2);
mCrypt.Encrypt(Packet, 0, 6);
//While writing this part of code I had a strange feeling of Deja-Vu or whatever it's called :>
Log.WriteLine(LogType.Packet, "{0}", packet.ToHex());
mSocket.Send(Packet);
}
catch (Exception ex)
{
Log.WriteLine(LogType.Error, "Exception Occured");
Log.WriteLine(LogType.Error, "Message: {0}", ex.Message);
Log.WriteLine(LogType.Error, "Stacktrace: {0}", ex.StackTrace);
}
}
/// <summary>Encrypts the byte array</summary>
/// <param name="data">The raw packet data to encrypt</param>
private void Encrypt(byte[] data, int offset)
{
if (Interlocked.Exchange(ref encrypt, 1) == 1)
{
log.Error("Encrypt Error");
}
m_packetCrypt.Encrypt(data, offset, 4);
Interlocked.Exchange(ref encrypt, 0);
}
/// <summary>
/// Enqueue <see cref="IWritable"/> to be sent encrypted to the client.
/// </summary>
public void EnqueueMessageEncrypted(IWritable message)
{
if (!MessageManager.GetOpcode(message, out GameMessageOpcode opcode))
{
log.Warn("Failed to send message with no attribute!");
return;
}
using (var stream = new MemoryStream())
using (var writer = new GamePacketWriter(stream))
{
writer.Write(opcode, 16);
message.Write(writer);
writer.FlushBits();
byte[] data = stream.ToArray();
byte[] encrypted = encryption.Encrypt(data, data.Length);
EnqueueMessage(BuildEncryptedMessage(encrypted));
}
log.Trace($"Sent packet {opcode}(0x{opcode:X}).");
}
public void Send(ref PacketWriter packet)
{
if (packet.Opcode == 0)
{
return;
}
var buffer = packet.ReadDataToSend();
try
{
if (Crypt.IsInitialized)
{
uint totalLength = (uint)packet.Size - 2;
totalLength <<= 13;
totalLength |= ((uint)packet.Opcode & 0x1FFF);
var header = BitConverter.GetBytes(totalLength);
Crypt.Encrypt(header);
buffer[0] = header[0];
buffer[1] = header[1];
buffer[2] = header[2];
buffer[3] = header[3];
}
clientSocket.Send(buffer, 0, buffer.Length, SocketFlags.None);
string clientInfo = ((IPEndPoint)clientSocket.RemoteEndPoint).Address + ":" + ((IPEndPoint)clientSocket.RemoteEndPoint).Port;
PacketLog.WritePacket(clientInfo, packet);
packet.Flush();
}
catch (Exception ex)
{
Log.Message(LogType.ERROR, "{0}", ex.Message);
Log.Message();
clientSocket.Close();
}
}