NetPacketProcessor
Fast specialized for network purposes serializer.
It supports classes with public properties with "get" and "set" methods or classes/structs with implemented INetSerializable
.
Serializer adds some overhead in size: 64 bit hash of class name and namespace (8 bytes). All other class fields will be as is in resulting packet.
Supported property types
byte sbyte short ushort int uint long ulong float double bool string char IPEndPoint
Arrays of all this types and custom types also supported
Enums also supported but work a bit slower than other types
Serialization speed comparsion
Serialization 100000 times of simple structure from example (NET 4.5
):
Serializer | Time | Size |
---|---|---|
BinaryFormatter | 3334 ms | 1096 bytes |
NetSerializer (first run) | 45 ms | 204 bytes |
NetSerializer (second run) | 37 ms | 204 bytes |
Raw | 24 ms | 204 bytes |
Packet Example
class SamplePacket
{
public string SomeString { get; set; }
public float SomeFloat { get; set; }
public int[] SomeIntArray { get; set; }
}
Custom field
NetPacketProcessor doesn't support nested structs or classes.
But you can register custom type processor.
That usefull for game engine types such as Vector3 and Quaternion (in Unity3d).
//Your packet that will be sent over network
class SamplePacket
{
public MyType SomeMyType { get; set; }
//Arrays of custom types supported too
public MyType[] SomeMyTypes { get; set; }
}
//Some custom type (variant 1)
struct MyType
{
public int Value1;
public string Value2;
public static void Serialize(NetDataWriter writer, SomeMyType mytype)
{
writer.Put(mytype.Value1);
writer.Put(mytype.Value2);
}
public static MyType Deserialize(NetDataReader reader)
{
MyType res = new MyType();
res.Value1 = reader.GetInt();
res.Value2 = reader.GetString();
return res;
}
}
...
netPacketProcessor = new NetPacketProcessor();
netPacketProcessor.RegisterNestedType( MyType.Serialize, MyType.Deserialize );
Another variant you can implement INetSerializable interface:
//Some custom type (variant 2)
struct SomeMyType : INetSerializable
{
public int Value1;
public string Value2;
public void Serialize(NetDataWriter writer)
{
writer.Put(Value1);
writer.Put(Value2);
}
public void Deserialize(NetDataReader reader)
{
Value1 = reader.GetInt();
Value2 = reader.GetString();
}
}
...
netPacketProcessor = new NetPacketProcessor();
netPacketProcessor.RegisterNestedType<SomeMyType>();
Or if you want use struct instead of class (and implement INetSerializable interface) you must provide constructor:
netPacketProcessor.RegisterNestedType<SomeMyType>(() => { return new SomeMyType(); });
Usage example (for full example look at source SerializerBenchmark)
//First side
class SomeClientListener : INetEventListener
{
private readonly NetPacketProcessor _netPacketProcessor = new NetPacketProcessor();
...
public void OnPeerConnected(NetPeer peer)
{
SamplePacket sp = new SamplePacket
{
SomeFloat = 3.42f,
SomeIntArray = new[] {6, 5, 4},
SomeString = "Test String",
}
peer.Send(_netPacketProcessor.Write(sp), DeliveryMethod.ReliableOrdered);
//or you can use _netPacketProcessor.Send(peer, sp, DeliveryMethod.ReliableOrdered);
}
}
//Other side
class SomeServerListener : INetEventListener
{
private readonly NetPacketProcessor _netPacketProcessor = new NetPacketProcessor();
public SomeServerListener()
{
//Subscribe to packet receiving
_netPacketProcessor.SubscribeReusable<SamplePacket, NetPeer>(OnSamplePacketReceived);
}
private void OnSamplePacketReceived(SamplePacket samplePacket, NetPeer peer)
{
Console.WriteLine("[Server] ReceivedPacket:\n" + samplePacket.SomeString);
}
public void OnNetworkReceive(NetPeer peer, NetPacketReader reader, DeliveryMethod deliveryMethod)
{
Console.WriteLine("[Server] received data. Processing...");
_netPacketProcessor.ReadAllPackets(reader, peer);
}
}
Mini FAQ
Q: NetPacketProcessor
throws "Undefined packet in NetDataReader
" but all packets registered
A: check that registered packet classes in same namespace (and better use shared code for packets)