public override byte[] Serialize()
{
var encoder = new RakEncoder();
encoder.Encode(Flags);
if (IsACKorNAK)
{
encoder.Encode(Count);
encoder.Encode(MinEqualsMax);
encoder.Encode(PacketMin);
if (!MinEqualsMax)
{
encoder.Encode(PacketMax);
}
}
else
{
encoder.Encode(SequenceNumber);
foreach (var enclosing in Enclosing)
{
if (enclosing != null)
{
encoder.Encode(RakPacket.Create(enclosing));
}
}
}
return(encoder.Get());
}
public RakNetPacket(byte[] data)
{
Type = PacketType.RakNetPacket;
var decoder = new RakDecoder(data);
Flags = decoder.Byte();
if (IsACKorNAK)
{
Enclosing = new List <RakPacket>();
Count = decoder.Short();
MinEqualsMax = decoder.Byte() != 0;
if (MinEqualsMax)
{
PacketMin = decoder.Triad();
PacketMax = PacketMin;
return;
}
PacketMax = decoder.Triad();
}
else
{
SequenceNumber = decoder.Triad();
Enclosing = new List <RakPacket>();
while (!decoder.AtEnd)
{
Enclosing.Add(RakPacket.Parse(ref decoder));
}
}
}
public static byte[] Create(RakPacket packet)
{
var encoder = new RakEncoder();
var serialized = packet.Serialize();
encoder.Encode(packet.MessageFlags);
encoder.Encode((short)((serialized.Length + 1) * 8));
if ((packet.MessageFlags & IS_RELIABLE) != 0)
{
encoder.Encode(packet.ReliableNum);
}
if ((packet.MessageFlags & IS_ORDERED) != 0)
{
encoder.Encode(packet.OrderingIndex);
encoder.Encode(packet.OrderingChannel);
}
encoder.Encode((byte)packet.MessageID);
encoder.Encode(serialized);
return(encoder.Get());
}
// RakPacket should always be parsed from RakNetPacket
// which provides the RakDecoder as there can be multiple.
public static RakPacket Parse(ref RakDecoder decoder)
{
var flags = decoder.Byte();
var length = decoder.Short();
var relnum = RakTriad.FromInt(0, false);
var orderidx = RakTriad.FromInt(0, false);
byte orderch = 0;
if ((flags & IS_RELIABLE) != 0) // reliable
{
relnum = decoder.Triad();
}
if ((flags & IS_ORDERED) != 0) // ordered
{
orderidx = decoder.Triad();
orderch = decoder.Byte();
}
var msgid = (RakPacketType)decoder.Byte();
var packet = new RakPacket();
switch (msgid)
{
case RakPacketType.ConnectedPing: packet = new ConnectedPingPacket(ref decoder); break;
case RakPacketType.ConnectionRequest: packet = new ConnectionRequestPacket(ref decoder); break;
case RakPacketType.NewIncomingConnection: packet = new NewIncomingConnectionPacket(ref decoder); break;
case RakPacketType.PlayerDisconnect: break;
case RakPacketType.LoginRequest: packet = new LoginRequestPacket(ref decoder); break;
case RakPacketType.Ready: packet = new ReadyPacket(ref decoder); break;
case RakPacketType.RequestChunk: packet = new RequestChunkPacket(ref decoder); break;
case RakPacketType.MovePlayer: packet = new MovePlayerPacket(ref decoder); break;
case RakPacketType.SetHealth: packet = new SetHealthPacket(ref decoder); break;
case RakPacketType.Animate: packet = new AnimatePacket(ref decoder); break;
case RakPacketType.RemoveBlock: packet = new RemoveBlockPacket(ref decoder); break;
case RakPacketType.Message: packet = new MessagePacket(ref decoder); break;
case RakPacketType.UseItem: packet = new UseItemPacket(ref decoder); break;
case RakPacketType.Interact: packet = new InteractPacket(ref decoder); break;
default:
Console.WriteLine($"[!!] Unhandled RakPacket Type {msgid}!");
break;
}
packet.MessageFlags = flags;
packet.Length = length;
packet.ReliableNum = relnum;
packet.OrderingIndex = orderidx;
packet.OrderingChannel = orderch;
packet.MessageID = msgid;
return(packet);
}
