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<!DOCTYPE html>
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<h1 id="netpacketprocessor">NetPacketProcessor</h1>
<p>Fast specialized for network purposes serializer.<br>
It supports <strong>classes</strong> with <strong>public properties with "get" and "set"</strong> methods or <strong>classes/structs with implemented <code>INetSerializable</code></strong>.<br>
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.</p>
<h2 id="supported-property-types">Supported property types</h2>
<pre><code class="lang-csharp">byte sbyte short ushort int uint long ulong float double bool string char IPEndPoint
</code></pre><p>Arrays of all this types and custom types also supported <br>
Enums also supported but work a bit slower than other types</p>
<h2 id="serialization-speed-comparsion">Serialization speed comparsion</h2>
<p>Serialization 100000 times of simple structure from <a href="https://github.com/RevenantX/LiteNetLib/blob/master/LibSample/SerializerBenchmark.cs">example</a> (<code>NET 4.5</code>):</p>
<table>
<thead>
<tr>
<th>Serializer</th>
<th>Time</th>
<th>Size</th>
</tr>
</thead>
<tbody>
<tr>
<td>BinaryFormatter</td>
<td>3334 ms</td>
<td>1096 bytes</td>
</tr>
<tr>
<td>NetSerializer (first run)</td>
<td>45 ms</td>
<td>204 bytes</td>
</tr>
<tr>
<td>NetSerializer (second run)</td>
<td>37 ms</td>
<td>204 bytes</td>
</tr>
<tr>
<td>Raw</td>
<td>24 ms</td>
<td>204 bytes</td>
</tr>
</tbody>
</table>
<h2 id="packet-example">Packet Example</h2>
<pre><code class="lang-csharp">class SamplePacket
{
public string SomeString { get; set; }
public float SomeFloat { get; set; }
public int[] SomeIntArray { get; set; }
}
</code></pre><h2 id="custom-field">Custom field</h2>
<p>NetPacketProcessor doesn't support nested structs or classes.<br>
But you can register custom type processor.<br>
That usefull for game engine types such as Vector3 and Quaternion (in Unity3d).</p>
<pre><code class="lang-csharp">//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 );
</code></pre><p>Another variant you can implement INetSerializable interface:</p>
<pre><code class="lang-csharp">//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>();
</code></pre><p>Or if you want use struct instead of class (and implement INetSerializable interface)
you must provide constructor:</p>
<pre><code class="lang-csharp">netPacketProcessor.RegisterNestedType<SomeMyType>(() => { return new SomeMyType(); });
</code></pre><h2 id="usage-example-for-full-example-look-at-source-serializerbenchmarkhttpsgithubcomrevenantxlitenetlibblobmasterlibsampleserializerbenchmarkcs">Usage example (for full example look at source <a href="https://github.com/RevenantX/LiteNetLib/blob/master/LibSample/SerializerBenchmark.cs">SerializerBenchmark</a>)</h2>
<pre><code class="lang-csharp">//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);
}
}
</code></pre><h3 id="mini-faq">Mini FAQ</h3>
<p>Q: <code>NetPacketProcessor</code> throws "<code>Undefined packet in NetDataReader</code>" but all packets registered <br>
A: check that registered packet classes in same namespace (and better use shared code for packets)</p>
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