This commit is contained in:
Karrar
2024-03-27 22:26:13 +03:00
commit 0caf47a728
223 changed files with 32253 additions and 0 deletions

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using System.Collections.Generic;
using System.Threading;
namespace LiteNetLib
{
internal abstract class BaseChannel
{
protected readonly NetPeer Peer;
protected readonly Queue<NetPacket> OutgoingQueue = new Queue<NetPacket>(NetConstants.DefaultWindowSize);
private int _isAddedToPeerChannelSendQueue;
public int PacketsInQueue => OutgoingQueue.Count;
protected BaseChannel(NetPeer peer)
{
Peer = peer;
}
public void AddToQueue(NetPacket packet)
{
lock (OutgoingQueue)
{
OutgoingQueue.Enqueue(packet);
}
AddToPeerChannelSendQueue();
}
protected void AddToPeerChannelSendQueue()
{
if (Interlocked.CompareExchange(ref _isAddedToPeerChannelSendQueue, 1, 0) == 0)
{
Peer.AddToReliableChannelSendQueue(this);
}
}
public bool SendAndCheckQueue()
{
bool hasPacketsToSend = SendNextPackets();
if (!hasPacketsToSend)
Interlocked.Exchange(ref _isAddedToPeerChannelSendQueue, 0);
return hasPacketsToSend;
}
protected abstract bool SendNextPackets();
public abstract bool ProcessPacket(NetPacket packet);
}
}

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using System.Net;
using System.Threading;
using LiteNetLib.Utils;
namespace LiteNetLib
{
internal enum ConnectionRequestResult
{
None,
Accept,
Reject,
RejectForce
}
public class ConnectionRequest
{
private readonly NetManager _listener;
private int _used;
public NetDataReader Data => InternalPacket.Data;
internal ConnectionRequestResult Result { get; private set; }
internal NetConnectRequestPacket InternalPacket;
public readonly IPEndPoint RemoteEndPoint;
internal void UpdateRequest(NetConnectRequestPacket connectRequest)
{
//old request
if (connectRequest.ConnectionTime < InternalPacket.ConnectionTime)
return;
if (connectRequest.ConnectionTime == InternalPacket.ConnectionTime &&
connectRequest.ConnectionNumber == InternalPacket.ConnectionNumber)
return;
InternalPacket = connectRequest;
}
private bool TryActivate()
{
return Interlocked.CompareExchange(ref _used, 1, 0) == 0;
}
internal ConnectionRequest(IPEndPoint remoteEndPoint, NetConnectRequestPacket requestPacket, NetManager listener)
{
InternalPacket = requestPacket;
RemoteEndPoint = remoteEndPoint;
_listener = listener;
}
public NetPeer AcceptIfKey(string key)
{
if (!TryActivate())
return null;
try
{
if (Data.GetString() == key)
Result = ConnectionRequestResult.Accept;
}
catch
{
NetDebug.WriteError("[AC] Invalid incoming data");
}
if (Result == ConnectionRequestResult.Accept)
return _listener.OnConnectionSolved(this, null, 0, 0);
Result = ConnectionRequestResult.Reject;
_listener.OnConnectionSolved(this, null, 0, 0);
return null;
}
/// <summary>
/// Accept connection and get new NetPeer as result
/// </summary>
/// <returns>Connected NetPeer</returns>
public NetPeer Accept()
{
if (!TryActivate())
return null;
Result = ConnectionRequestResult.Accept;
return _listener.OnConnectionSolved(this, null, 0, 0);
}
public void Reject(byte[] rejectData, int start, int length, bool force)
{
if (!TryActivate())
return;
Result = force ? ConnectionRequestResult.RejectForce : ConnectionRequestResult.Reject;
_listener.OnConnectionSolved(this, rejectData, start, length);
}
public void Reject(byte[] rejectData, int start, int length)
{
Reject(rejectData, start, length, false);
}
public void RejectForce(byte[] rejectData, int start, int length)
{
Reject(rejectData, start, length, true);
}
public void RejectForce()
{
Reject(null, 0, 0, true);
}
public void RejectForce(byte[] rejectData)
{
Reject(rejectData, 0, rejectData.Length, true);
}
public void RejectForce(NetDataWriter rejectData)
{
Reject(rejectData.Data, 0, rejectData.Length, true);
}
public void Reject()
{
Reject(null, 0, 0, false);
}
public void Reject(byte[] rejectData)
{
Reject(rejectData, 0, rejectData.Length, false);
}
public void Reject(NetDataWriter rejectData)
{
Reject(rejectData.Data, 0, rejectData.Length, false);
}
}
}

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using System.Net;
using System.Net.Sockets;
using LiteNetLib.Utils;
namespace LiteNetLib
{
/// <summary>
/// Type of message that you receive in OnNetworkReceiveUnconnected event
/// </summary>
public enum UnconnectedMessageType
{
BasicMessage,
Broadcast
}
/// <summary>
/// Disconnect reason that you receive in OnPeerDisconnected event
/// </summary>
public enum DisconnectReason
{
ConnectionFailed,
Timeout,
HostUnreachable,
NetworkUnreachable,
RemoteConnectionClose,
DisconnectPeerCalled,
ConnectionRejected,
InvalidProtocol,
UnknownHost,
Reconnect,
PeerToPeerConnection,
PeerNotFound
}
/// <summary>
/// Additional information about disconnection
/// </summary>
public struct DisconnectInfo
{
/// <summary>
/// Additional info why peer disconnected
/// </summary>
public DisconnectReason Reason;
/// <summary>
/// Error code (if reason is SocketSendError or SocketReceiveError)
/// </summary>
public SocketError SocketErrorCode;
/// <summary>
/// Additional data that can be accessed (only if reason is RemoteConnectionClose)
/// </summary>
public NetPacketReader AdditionalData;
}
public interface INetEventListener
{
/// <summary>
/// New remote peer connected to host, or client connected to remote host
/// </summary>
/// <param name="peer">Connected peer object</param>
void OnPeerConnected(NetPeer peer);
/// <summary>
/// Peer disconnected
/// </summary>
/// <param name="peer">disconnected peer</param>
/// <param name="disconnectInfo">additional info about reason, errorCode or data received with disconnect message</param>
void OnPeerDisconnected(NetPeer peer, DisconnectInfo disconnectInfo);
/// <summary>
/// Network error (on send or receive)
/// </summary>
/// <param name="endPoint">From endPoint (can be null)</param>
/// <param name="socketError">Socket error</param>
void OnNetworkError(IPEndPoint endPoint, SocketError socketError);
/// <summary>
/// Received some data
/// </summary>
/// <param name="peer">From peer</param>
/// <param name="reader">DataReader containing all received data</param>
/// <param name="channelNumber">Number of channel at which packet arrived</param>
/// <param name="deliveryMethod">Type of received packet</param>
void OnNetworkReceive(NetPeer peer, NetPacketReader reader, byte channelNumber, DeliveryMethod deliveryMethod);
/// <summary>
/// Received unconnected message
/// </summary>
/// <param name="remoteEndPoint">From address (IP and Port)</param>
/// <param name="reader">Message data</param>
/// <param name="messageType">Message type (simple, discovery request or response)</param>
void OnNetworkReceiveUnconnected(IPEndPoint remoteEndPoint, NetPacketReader reader, UnconnectedMessageType messageType);
/// <summary>
/// Latency information updated
/// </summary>
/// <param name="peer">Peer with updated latency</param>
/// <param name="latency">latency value in milliseconds</param>
void OnNetworkLatencyUpdate(NetPeer peer, int latency);
/// <summary>
/// On peer connection requested
/// </summary>
/// <param name="request">Request information (EndPoint, internal id, additional data)</param>
void OnConnectionRequest(ConnectionRequest request);
}
public interface IDeliveryEventListener
{
/// <summary>
/// On reliable message delivered
/// </summary>
/// <param name="peer"></param>
/// <param name="userData"></param>
void OnMessageDelivered(NetPeer peer, object userData);
}
public interface INtpEventListener
{
/// <summary>
/// Ntp response
/// </summary>
/// <param name="packet"></param>
void OnNtpResponse(NtpPacket packet);
}
public interface IPeerAddressChangedListener
{
/// <summary>
/// Called when peer address changed (when AllowPeerAddressChange is enabled)
/// </summary>
/// <param name="peer">Peer that changed address (with new address)</param>
/// <param name="previousAddress">previous IP</param>
void OnPeerAddressChanged(NetPeer peer, IPEndPoint previousAddress);
}
public class EventBasedNetListener : INetEventListener, IDeliveryEventListener, INtpEventListener, IPeerAddressChangedListener
{
public delegate void OnPeerConnected(NetPeer peer);
public delegate void OnPeerDisconnected(NetPeer peer, DisconnectInfo disconnectInfo);
public delegate void OnNetworkError(IPEndPoint endPoint, SocketError socketError);
public delegate void OnNetworkReceive(NetPeer peer, NetPacketReader reader, byte channel, DeliveryMethod deliveryMethod);
public delegate void OnNetworkReceiveUnconnected(IPEndPoint remoteEndPoint, NetPacketReader reader, UnconnectedMessageType messageType);
public delegate void OnNetworkLatencyUpdate(NetPeer peer, int latency);
public delegate void OnConnectionRequest(ConnectionRequest request);
public delegate void OnDeliveryEvent(NetPeer peer, object userData);
public delegate void OnNtpResponseEvent(NtpPacket packet);
public delegate void OnPeerAddressChangedEvent(NetPeer peer, IPEndPoint previousAddress);
public event OnPeerConnected PeerConnectedEvent;
public event OnPeerDisconnected PeerDisconnectedEvent;
public event OnNetworkError NetworkErrorEvent;
public event OnNetworkReceive NetworkReceiveEvent;
public event OnNetworkReceiveUnconnected NetworkReceiveUnconnectedEvent;
public event OnNetworkLatencyUpdate NetworkLatencyUpdateEvent;
public event OnConnectionRequest ConnectionRequestEvent;
public event OnDeliveryEvent DeliveryEvent;
public event OnNtpResponseEvent NtpResponseEvent;
public event OnPeerAddressChangedEvent PeerAddressChangedEvent;
public void ClearPeerConnectedEvent()
{
PeerConnectedEvent = null;
}
public void ClearPeerDisconnectedEvent()
{
PeerDisconnectedEvent = null;
}
public void ClearNetworkErrorEvent()
{
NetworkErrorEvent = null;
}
public void ClearNetworkReceiveEvent()
{
NetworkReceiveEvent = null;
}
public void ClearNetworkReceiveUnconnectedEvent()
{
NetworkReceiveUnconnectedEvent = null;
}
public void ClearNetworkLatencyUpdateEvent()
{
NetworkLatencyUpdateEvent = null;
}
public void ClearConnectionRequestEvent()
{
ConnectionRequestEvent = null;
}
public void ClearDeliveryEvent()
{
DeliveryEvent = null;
}
public void ClearNtpResponseEvent()
{
NtpResponseEvent = null;
}
public void ClearPeerAddressChangedEvent()
{
PeerAddressChangedEvent = null;
}
void INetEventListener.OnPeerConnected(NetPeer peer)
{
if (PeerConnectedEvent != null)
PeerConnectedEvent(peer);
}
void INetEventListener.OnPeerDisconnected(NetPeer peer, DisconnectInfo disconnectInfo)
{
if (PeerDisconnectedEvent != null)
PeerDisconnectedEvent(peer, disconnectInfo);
}
void INetEventListener.OnNetworkError(IPEndPoint endPoint, SocketError socketErrorCode)
{
if (NetworkErrorEvent != null)
NetworkErrorEvent(endPoint, socketErrorCode);
}
void INetEventListener.OnNetworkReceive(NetPeer peer, NetPacketReader reader, byte channelNumber, DeliveryMethod deliveryMethod)
{
if (NetworkReceiveEvent != null)
NetworkReceiveEvent(peer, reader, channelNumber, deliveryMethod);
}
void INetEventListener.OnNetworkReceiveUnconnected(IPEndPoint remoteEndPoint, NetPacketReader reader, UnconnectedMessageType messageType)
{
if (NetworkReceiveUnconnectedEvent != null)
NetworkReceiveUnconnectedEvent(remoteEndPoint, reader, messageType);
}
void INetEventListener.OnNetworkLatencyUpdate(NetPeer peer, int latency)
{
if (NetworkLatencyUpdateEvent != null)
NetworkLatencyUpdateEvent(peer, latency);
}
void INetEventListener.OnConnectionRequest(ConnectionRequest request)
{
if (ConnectionRequestEvent != null)
ConnectionRequestEvent(request);
}
void IDeliveryEventListener.OnMessageDelivered(NetPeer peer, object userData)
{
if (DeliveryEvent != null)
DeliveryEvent(peer, userData);
}
void INtpEventListener.OnNtpResponse(NtpPacket packet)
{
if (NtpResponseEvent != null)
NtpResponseEvent(packet);
}
void IPeerAddressChangedListener.OnPeerAddressChanged(NetPeer peer, IPEndPoint previousAddress)
{
if (PeerAddressChangedEvent != null)
PeerAddressChangedEvent(peer, previousAddress);
}
}
}

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using System;
using System.Net;
using LiteNetLib.Utils;
namespace LiteNetLib
{
internal sealed class NetConnectRequestPacket
{
public const int HeaderSize = 18;
public readonly long ConnectionTime;
public byte ConnectionNumber;
public readonly byte[] TargetAddress;
public readonly NetDataReader Data;
public readonly int PeerId;
private NetConnectRequestPacket(long connectionTime, byte connectionNumber, int localId, byte[] targetAddress, NetDataReader data)
{
ConnectionTime = connectionTime;
ConnectionNumber = connectionNumber;
TargetAddress = targetAddress;
Data = data;
PeerId = localId;
}
public static int GetProtocolId(NetPacket packet)
{
return BitConverter.ToInt32(packet.RawData, 1);
}
public static NetConnectRequestPacket FromData(NetPacket packet)
{
if (packet.ConnectionNumber >= NetConstants.MaxConnectionNumber)
return null;
//Getting connection time for peer
long connectionTime = BitConverter.ToInt64(packet.RawData, 5);
//Get peer id
int peerId = BitConverter.ToInt32(packet.RawData, 13);
//Get target address
int addrSize = packet.RawData[HeaderSize-1];
if (addrSize != 16 && addrSize != 28)
return null;
byte[] addressBytes = new byte[addrSize];
Buffer.BlockCopy(packet.RawData, HeaderSize, addressBytes, 0, addrSize);
// Read data and create request
var reader = new NetDataReader(null, 0, 0);
if (packet.Size > HeaderSize+addrSize)
reader.SetSource(packet.RawData, HeaderSize + addrSize, packet.Size);
return new NetConnectRequestPacket(connectionTime, packet.ConnectionNumber, peerId, addressBytes, reader);
}
public static NetPacket Make(NetDataWriter connectData, SocketAddress addressBytes, long connectTime, int localId)
{
//Make initial packet
var packet = new NetPacket(PacketProperty.ConnectRequest, connectData.Length+addressBytes.Size);
//Add data
FastBitConverter.GetBytes(packet.RawData, 1, NetConstants.ProtocolId);
FastBitConverter.GetBytes(packet.RawData, 5, connectTime);
FastBitConverter.GetBytes(packet.RawData, 13, localId);
packet.RawData[HeaderSize-1] = (byte)addressBytes.Size;
for (int i = 0; i < addressBytes.Size; i++)
packet.RawData[HeaderSize + i] = addressBytes[i];
Buffer.BlockCopy(connectData.Data, 0, packet.RawData, HeaderSize + addressBytes.Size, connectData.Length);
return packet;
}
}
internal sealed class NetConnectAcceptPacket
{
public const int Size = 15;
public readonly long ConnectionTime;
public readonly byte ConnectionNumber;
public readonly int PeerId;
public readonly bool PeerNetworkChanged;
private NetConnectAcceptPacket(long connectionTime, byte connectionNumber, int peerId, bool peerNetworkChanged)
{
ConnectionTime = connectionTime;
ConnectionNumber = connectionNumber;
PeerId = peerId;
PeerNetworkChanged = peerNetworkChanged;
}
public static NetConnectAcceptPacket FromData(NetPacket packet)
{
if (packet.Size != Size)
return null;
long connectionId = BitConverter.ToInt64(packet.RawData, 1);
//check connect num
byte connectionNumber = packet.RawData[9];
if (connectionNumber >= NetConstants.MaxConnectionNumber)
return null;
//check reused flag
byte isReused = packet.RawData[10];
if (isReused > 1)
return null;
//get remote peer id
int peerId = BitConverter.ToInt32(packet.RawData, 11);
if (peerId < 0)
return null;
return new NetConnectAcceptPacket(connectionId, connectionNumber, peerId, isReused == 1);
}
public static NetPacket Make(long connectTime, byte connectNum, int localPeerId)
{
var packet = new NetPacket(PacketProperty.ConnectAccept, 0);
FastBitConverter.GetBytes(packet.RawData, 1, connectTime);
packet.RawData[9] = connectNum;
FastBitConverter.GetBytes(packet.RawData, 11, localPeerId);
return packet;
}
public static NetPacket MakeNetworkChanged(NetPeer peer)
{
var packet = new NetPacket(PacketProperty.PeerNotFound, Size-1);
FastBitConverter.GetBytes(packet.RawData, 1, peer.ConnectTime);
packet.RawData[9] = peer.ConnectionNum;
packet.RawData[10] = 1;
FastBitConverter.GetBytes(packet.RawData, 11, peer.RemoteId);
return packet;
}
}
}

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using LiteNetLib.Utils;
using System;
using System.Net;
namespace LiteNetLib.Layers
{
public sealed class Crc32cLayer : PacketLayerBase
{
public Crc32cLayer() : base(CRC32C.ChecksumSize)
{
}
public override void ProcessInboundPacket(ref IPEndPoint endPoint, ref byte[] data, ref int offset, ref int length)
{
if (length < NetConstants.HeaderSize + CRC32C.ChecksumSize)
{
NetDebug.WriteError("[NM] DataReceived size: bad!");
//Set length to 0 to have netManager drop the packet.
length = 0;
return;
}
int checksumPoint = length - CRC32C.ChecksumSize;
if (CRC32C.Compute(data, offset, checksumPoint) != BitConverter.ToUInt32(data, checksumPoint))
{
NetDebug.Write("[NM] DataReceived checksum: bad!");
//Set length to 0 to have netManager drop the packet.
length = 0;
return;
}
length -= CRC32C.ChecksumSize;
}
public override void ProcessOutBoundPacket(ref IPEndPoint endPoint, ref byte[] data, ref int offset, ref int length)
{
FastBitConverter.GetBytes(data, length, CRC32C.Compute(data, offset, length));
length += CRC32C.ChecksumSize;
}
}
}

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using System.Net;
namespace LiteNetLib.Layers
{
public abstract class PacketLayerBase
{
public readonly int ExtraPacketSizeForLayer;
protected PacketLayerBase(int extraPacketSizeForLayer)
{
ExtraPacketSizeForLayer = extraPacketSizeForLayer;
}
public abstract void ProcessInboundPacket(ref IPEndPoint endPoint, ref byte[] data, ref int offset, ref int length);
public abstract void ProcessOutBoundPacket(ref IPEndPoint endPoint, ref byte[] data, ref int offset, ref int length);
}
}

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using System;
using System.Net;
using System.Text;
namespace LiteNetLib.Layers
{
public class XorEncryptLayer : PacketLayerBase
{
private byte[] _byteKey;
public XorEncryptLayer() : base(0)
{
}
public XorEncryptLayer(byte[] key) : this()
{
SetKey(key);
}
public XorEncryptLayer(string key) : this()
{
SetKey(key);
}
public void SetKey(string key)
{
_byteKey = Encoding.UTF8.GetBytes(key);
}
public void SetKey(byte[] key)
{
if (_byteKey == null || _byteKey.Length != key.Length)
_byteKey = new byte[key.Length];
Buffer.BlockCopy(key, 0, _byteKey, 0, key.Length);
}
public override void ProcessInboundPacket(ref IPEndPoint endPoint, ref byte[] data, ref int offset, ref int length)
{
if (_byteKey == null)
return;
var cur = offset;
for (var i = 0; i < length; i++, cur++)
{
data[cur] = (byte)(data[cur] ^ _byteKey[i % _byteKey.Length]);
}
}
public override void ProcessOutBoundPacket(ref IPEndPoint endPoint, ref byte[] data, ref int offset, ref int length)
{
if (_byteKey == null)
return;
var cur = offset;
for (var i = 0; i < length; i++, cur++)
{
data[cur] = (byte)(data[cur] ^ _byteKey[i % _byteKey.Length]);
}
}
}
}

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using System.Collections.Concurrent;
using System.Net;
using LiteNetLib.Utils;
namespace LiteNetLib
{
public enum NatAddressType
{
Internal,
External
}
public interface INatPunchListener
{
void OnNatIntroductionRequest(IPEndPoint localEndPoint, IPEndPoint remoteEndPoint, string token);
void OnNatIntroductionSuccess(IPEndPoint targetEndPoint, NatAddressType type, string token);
}
public class EventBasedNatPunchListener : INatPunchListener
{
public delegate void OnNatIntroductionRequest(IPEndPoint localEndPoint, IPEndPoint remoteEndPoint, string token);
public delegate void OnNatIntroductionSuccess(IPEndPoint targetEndPoint, NatAddressType type, string token);
public event OnNatIntroductionRequest NatIntroductionRequest;
public event OnNatIntroductionSuccess NatIntroductionSuccess;
void INatPunchListener.OnNatIntroductionRequest(IPEndPoint localEndPoint, IPEndPoint remoteEndPoint, string token)
{
if(NatIntroductionRequest != null)
NatIntroductionRequest(localEndPoint, remoteEndPoint, token);
}
void INatPunchListener.OnNatIntroductionSuccess(IPEndPoint targetEndPoint, NatAddressType type, string token)
{
if (NatIntroductionSuccess != null)
NatIntroductionSuccess(targetEndPoint, type, token);
}
}
/// <summary>
/// Module for UDP NAT Hole punching operations. Can be accessed from NetManager
/// </summary>
public sealed class NatPunchModule
{
struct RequestEventData
{
public IPEndPoint LocalEndPoint;
public IPEndPoint RemoteEndPoint;
public string Token;
}
struct SuccessEventData
{
public IPEndPoint TargetEndPoint;
public NatAddressType Type;
public string Token;
}
class NatIntroduceRequestPacket
{
public IPEndPoint Internal { get; set; }
public string Token { get; set; }
}
class NatIntroduceResponsePacket
{
public IPEndPoint Internal { get; set; }
public IPEndPoint External { get; set; }
public string Token { get; set; }
}
class NatPunchPacket
{
public string Token { get; set; }
public bool IsExternal { get; set; }
}
private readonly NetManager _socket;
private readonly ConcurrentQueue<RequestEventData> _requestEvents = new ConcurrentQueue<RequestEventData>();
private readonly ConcurrentQueue<SuccessEventData> _successEvents = new ConcurrentQueue<SuccessEventData>();
private readonly NetDataReader _cacheReader = new NetDataReader();
private readonly NetDataWriter _cacheWriter = new NetDataWriter();
private readonly NetPacketProcessor _netPacketProcessor = new NetPacketProcessor(MaxTokenLength);
private INatPunchListener _natPunchListener;
public const int MaxTokenLength = 256;
/// <summary>
/// Events automatically will be called without PollEvents method from another thread
/// </summary>
public bool UnsyncedEvents = false;
internal NatPunchModule(NetManager socket)
{
_socket = socket;
_netPacketProcessor.SubscribeReusable<NatIntroduceResponsePacket>(OnNatIntroductionResponse);
_netPacketProcessor.SubscribeReusable<NatIntroduceRequestPacket, IPEndPoint>(OnNatIntroductionRequest);
_netPacketProcessor.SubscribeReusable<NatPunchPacket, IPEndPoint>(OnNatPunch);
}
internal void ProcessMessage(IPEndPoint senderEndPoint, NetPacket packet)
{
lock (_cacheReader)
{
_cacheReader.SetSource(packet.RawData, NetConstants.HeaderSize, packet.Size);
_netPacketProcessor.ReadAllPackets(_cacheReader, senderEndPoint);
}
}
public void Init(INatPunchListener listener)
{
_natPunchListener = listener;
}
private void Send<T>(T packet, IPEndPoint target) where T : class, new()
{
_cacheWriter.Reset();
_cacheWriter.Put((byte)PacketProperty.NatMessage);
_netPacketProcessor.Write(_cacheWriter, packet);
_socket.SendRaw(_cacheWriter.Data, 0, _cacheWriter.Length, target);
}
public void NatIntroduce(
IPEndPoint hostInternal,
IPEndPoint hostExternal,
IPEndPoint clientInternal,
IPEndPoint clientExternal,
string additionalInfo)
{
var req = new NatIntroduceResponsePacket
{
Token = additionalInfo
};
//First packet (server) send to client
req.Internal = hostInternal;
req.External = hostExternal;
Send(req, clientExternal);
//Second packet (client) send to server
req.Internal = clientInternal;
req.External = clientExternal;
Send(req, hostExternal);
}
public void PollEvents()
{
if (UnsyncedEvents)
return;
if (_natPunchListener == null || (_successEvents.IsEmpty && _requestEvents.IsEmpty))
return;
while (_successEvents.TryDequeue(out var evt))
{
_natPunchListener.OnNatIntroductionSuccess(
evt.TargetEndPoint,
evt.Type,
evt.Token);
}
while (_requestEvents.TryDequeue(out var evt))
{
_natPunchListener.OnNatIntroductionRequest(evt.LocalEndPoint, evt.RemoteEndPoint, evt.Token);
}
}
public void SendNatIntroduceRequest(string host, int port, string additionalInfo)
{
SendNatIntroduceRequest(NetUtils.MakeEndPoint(host, port), additionalInfo);
}
public void SendNatIntroduceRequest(IPEndPoint masterServerEndPoint, string additionalInfo)
{
//prepare outgoing data
string networkIp = NetUtils.GetLocalIp(LocalAddrType.IPv4);
if (string.IsNullOrEmpty(networkIp))
{
networkIp = NetUtils.GetLocalIp(LocalAddrType.IPv6);
}
Send(
new NatIntroduceRequestPacket
{
Internal = NetUtils.MakeEndPoint(networkIp, _socket.LocalPort),
Token = additionalInfo
},
masterServerEndPoint);
}
//We got request and must introduce
private void OnNatIntroductionRequest(NatIntroduceRequestPacket req, IPEndPoint senderEndPoint)
{
if (UnsyncedEvents)
{
_natPunchListener.OnNatIntroductionRequest(
req.Internal,
senderEndPoint,
req.Token);
}
else
{
_requestEvents.Enqueue(new RequestEventData
{
LocalEndPoint = req.Internal,
RemoteEndPoint = senderEndPoint,
Token = req.Token
});
}
}
//We got introduce and must punch
private void OnNatIntroductionResponse(NatIntroduceResponsePacket req)
{
NetDebug.Write(NetLogLevel.Trace, "[NAT] introduction received");
// send internal punch
var punchPacket = new NatPunchPacket {Token = req.Token};
Send(punchPacket, req.Internal);
NetDebug.Write(NetLogLevel.Trace, $"[NAT] internal punch sent to {req.Internal}");
// hack for some routers
_socket.Ttl = 2;
_socket.SendRaw(new[] { (byte)PacketProperty.Empty }, 0, 1, req.External);
// send external punch
_socket.Ttl = NetConstants.SocketTTL;
punchPacket.IsExternal = true;
Send(punchPacket, req.External);
NetDebug.Write(NetLogLevel.Trace, $"[NAT] external punch sent to {req.External}");
}
//We got punch and can connect
private void OnNatPunch(NatPunchPacket req, IPEndPoint senderEndPoint)
{
//Read info
NetDebug.Write(NetLogLevel.Trace, $"[NAT] punch received from {senderEndPoint} - additional info: {req.Token}");
//Release punch success to client; enabling him to Connect() to Sender if token is ok
if(UnsyncedEvents)
{
_natPunchListener.OnNatIntroductionSuccess(
senderEndPoint,
req.IsExternal ? NatAddressType.External : NatAddressType.Internal,
req.Token
);
}
else
{
_successEvents.Enqueue(new SuccessEventData
{
TargetEndPoint = senderEndPoint,
Type = req.IsExternal ? NatAddressType.External : NatAddressType.Internal,
Token = req.Token
});
}
}
}
}

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using System;
using System.Collections.Generic;
using System.Net;
using System.Net.Sockets;
using System.Runtime.CompilerServices;
using System.Runtime.InteropServices;
namespace LiteNetLib
{
internal readonly struct NativeAddr : IEquatable<NativeAddr>
{
//common parts
private readonly long _part1; //family, port, etc
private readonly long _part2;
//ipv6 parts
private readonly long _part3;
private readonly int _part4;
private readonly int _hash;
public NativeAddr(byte[] address, int len)
{
_part1 = BitConverter.ToInt64(address, 0);
_part2 = BitConverter.ToInt64(address, 8);
if (len > 16)
{
_part3 = BitConverter.ToInt64(address, 16);
_part4 = BitConverter.ToInt32(address, 24);
}
else
{
_part3 = 0;
_part4 = 0;
}
_hash = (int)(_part1 >> 32) ^ (int)_part1 ^
(int)(_part2 >> 32) ^ (int)_part2 ^
(int)(_part3 >> 32) ^ (int)_part3 ^
_part4;
}
public override int GetHashCode()
{
return _hash;
}
public bool Equals(NativeAddr other)
{
return _part1 == other._part1 &&
_part2 == other._part2 &&
_part3 == other._part3 &&
_part4 == other._part4;
}
public override bool Equals(object obj)
{
return obj is NativeAddr other && Equals(other);
}
public static bool operator ==(NativeAddr left, NativeAddr right)
{
return left.Equals(right);
}
public static bool operator !=(NativeAddr left, NativeAddr right)
{
return !left.Equals(right);
}
}
internal class NativeEndPoint : IPEndPoint
{
public readonly byte[] NativeAddress;
public NativeEndPoint(byte[] address) : base(IPAddress.Any, 0)
{
NativeAddress = new byte[address.Length];
Buffer.BlockCopy(address, 0, NativeAddress, 0, address.Length);
short family = (short)((address[1] << 8) | address[0]);
Port =(ushort)((address[2] << 8) | address[3]);
if ((NativeSocket.UnixMode && family == NativeSocket.AF_INET6) || (!NativeSocket.UnixMode && (AddressFamily)family == AddressFamily.InterNetworkV6))
{
uint scope = unchecked((uint)(
(address[27] << 24) +
(address[26] << 16) +
(address[25] << 8) +
(address[24])));
#if NETCOREAPP || NETSTANDARD2_1 || NETSTANDARD2_1_OR_GREATER
Address = new IPAddress(new ReadOnlySpan<byte>(address, 8, 16), scope);
#else
byte[] addrBuffer = new byte[16];
Buffer.BlockCopy(address, 8, addrBuffer, 0, 16);
Address = new IPAddress(addrBuffer, scope);
#endif
}
else //IPv4
{
long ipv4Addr = unchecked((uint)((address[4] & 0x000000FF) |
(address[5] << 8 & 0x0000FF00) |
(address[6] << 16 & 0x00FF0000) |
(address[7] << 24)));
Address = new IPAddress(ipv4Addr);
}
}
}
internal static class NativeSocket
{
static
#if LITENETLIB_UNSAFE
unsafe
#endif
class WinSock
{
private const string LibName = "ws2_32.dll";
[DllImport(LibName, SetLastError = true)]
public static extern int recvfrom(
IntPtr socketHandle,
[In, Out] byte[] pinnedBuffer,
[In] int len,
[In] SocketFlags socketFlags,
[Out] byte[] socketAddress,
[In, Out] ref int socketAddressSize);
[DllImport(LibName, SetLastError = true)]
internal static extern int sendto(
IntPtr socketHandle,
#if LITENETLIB_UNSAFE
byte* pinnedBuffer,
#else
[In] byte[] pinnedBuffer,
#endif
[In] int len,
[In] SocketFlags socketFlags,
[In] byte[] socketAddress,
[In] int socketAddressSize);
}
static
#if LITENETLIB_UNSAFE
unsafe
#endif
class UnixSock
{
private const string LibName = "libc";
[DllImport(LibName, SetLastError = true)]
public static extern int recvfrom(
IntPtr socketHandle,
[In, Out] byte[] pinnedBuffer,
[In] int len,
[In] SocketFlags socketFlags,
[Out] byte[] socketAddress,
[In, Out] ref int socketAddressSize);
[DllImport(LibName, SetLastError = true)]
internal static extern int sendto(
IntPtr socketHandle,
#if LITENETLIB_UNSAFE
byte* pinnedBuffer,
#else
[In] byte[] pinnedBuffer,
#endif
[In] int len,
[In] SocketFlags socketFlags,
[In] byte[] socketAddress,
[In] int socketAddressSize);
}
public static readonly bool IsSupported = false;
public static readonly bool UnixMode = false;
public const int IPv4AddrSize = 16;
public const int IPv6AddrSize = 28;
public const int AF_INET = 2;
public const int AF_INET6 = 10;
private static readonly Dictionary<int, SocketError> NativeErrorToSocketError = new Dictionary<int, SocketError>
{
{ 13, SocketError.AccessDenied }, //EACCES
{ 98, SocketError.AddressAlreadyInUse }, //EADDRINUSE
{ 99, SocketError.AddressNotAvailable }, //EADDRNOTAVAIL
{ 97, SocketError.AddressFamilyNotSupported }, //EAFNOSUPPORT
{ 11, SocketError.WouldBlock }, //EAGAIN
{ 114, SocketError.AlreadyInProgress }, //EALREADY
{ 9, SocketError.OperationAborted }, //EBADF
{ 125, SocketError.OperationAborted }, //ECANCELED
{ 103, SocketError.ConnectionAborted }, //ECONNABORTED
{ 111, SocketError.ConnectionRefused }, //ECONNREFUSED
{ 104, SocketError.ConnectionReset }, //ECONNRESET
{ 89, SocketError.DestinationAddressRequired }, //EDESTADDRREQ
{ 14, SocketError.Fault }, //EFAULT
{ 112, SocketError.HostDown }, //EHOSTDOWN
{ 6, SocketError.HostNotFound }, //ENXIO
{ 113, SocketError.HostUnreachable }, //EHOSTUNREACH
{ 115, SocketError.InProgress }, //EINPROGRESS
{ 4, SocketError.Interrupted }, //EINTR
{ 22, SocketError.InvalidArgument }, //EINVAL
{ 106, SocketError.IsConnected }, //EISCONN
{ 24, SocketError.TooManyOpenSockets }, //EMFILE
{ 90, SocketError.MessageSize }, //EMSGSIZE
{ 100, SocketError.NetworkDown }, //ENETDOWN
{ 102, SocketError.NetworkReset }, //ENETRESET
{ 101, SocketError.NetworkUnreachable }, //ENETUNREACH
{ 23, SocketError.TooManyOpenSockets }, //ENFILE
{ 105, SocketError.NoBufferSpaceAvailable }, //ENOBUFS
{ 61, SocketError.NoData }, //ENODATA
{ 2, SocketError.AddressNotAvailable }, //ENOENT
{ 92, SocketError.ProtocolOption }, //ENOPROTOOPT
{ 107, SocketError.NotConnected }, //ENOTCONN
{ 88, SocketError.NotSocket }, //ENOTSOCK
{ 3440, SocketError.OperationNotSupported }, //ENOTSUP
{ 1, SocketError.AccessDenied }, //EPERM
{ 32, SocketError.Shutdown }, //EPIPE
{ 96, SocketError.ProtocolFamilyNotSupported }, //EPFNOSUPPORT
{ 93, SocketError.ProtocolNotSupported }, //EPROTONOSUPPORT
{ 91, SocketError.ProtocolType }, //EPROTOTYPE
{ 94, SocketError.SocketNotSupported }, //ESOCKTNOSUPPORT
{ 108, SocketError.Disconnecting }, //ESHUTDOWN
{ 110, SocketError.TimedOut }, //ETIMEDOUT
{ 0, SocketError.Success }
};
static NativeSocket()
{
if (RuntimeInformation.IsOSPlatform(OSPlatform.Linux))
{
IsSupported = true;
UnixMode = true;
}
else if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
{
IsSupported = true;
}
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static int RecvFrom(
IntPtr socketHandle,
byte[] pinnedBuffer,
int len,
byte[] socketAddress,
ref int socketAddressSize)
{
return UnixMode
? UnixSock.recvfrom(socketHandle, pinnedBuffer, len, 0, socketAddress, ref socketAddressSize)
: WinSock.recvfrom(socketHandle, pinnedBuffer, len, 0, socketAddress, ref socketAddressSize);
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public
#if LITENETLIB_UNSAFE
unsafe
#endif
static int SendTo(
IntPtr socketHandle,
#if LITENETLIB_UNSAFE
byte* pinnedBuffer,
#else
byte[] pinnedBuffer,
#endif
int len,
byte[] socketAddress,
int socketAddressSize)
{
return UnixMode
? UnixSock.sendto(socketHandle, pinnedBuffer, len, 0, socketAddress, socketAddressSize)
: WinSock.sendto(socketHandle, pinnedBuffer, len, 0, socketAddress, socketAddressSize);
}
public static SocketError GetSocketError()
{
int error = Marshal.GetLastWin32Error();
if (UnixMode)
return NativeErrorToSocketError.TryGetValue(error, out var err)
? err
: SocketError.SocketError;
return (SocketError)error;
}
public static SocketException GetSocketException()
{
int error = Marshal.GetLastWin32Error();
if (UnixMode)
return NativeErrorToSocketError.TryGetValue(error, out var err)
? new SocketException((int)err)
: new SocketException((int)SocketError.SocketError);
return new SocketException(error);
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static short GetNativeAddressFamily(IPEndPoint remoteEndPoint)
{
return UnixMode
? (short)(remoteEndPoint.AddressFamily == AddressFamily.InterNetwork ? AF_INET : AF_INET6)
: (short)remoteEndPoint.AddressFamily;
}
}
}

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namespace LiteNetLib
{
/// <summary>
/// Sending method type
/// </summary>
public enum DeliveryMethod : byte
{
/// <summary>
/// Unreliable. Packets can be dropped, can be duplicated, can arrive without order.
/// </summary>
Unreliable = 4,
/// <summary>
/// Reliable. Packets won't be dropped, won't be duplicated, can arrive without order.
/// </summary>
ReliableUnordered = 0,
/// <summary>
/// Unreliable. Packets can be dropped, won't be duplicated, will arrive in order.
/// </summary>
Sequenced = 1,
/// <summary>
/// Reliable and ordered. Packets won't be dropped, won't be duplicated, will arrive in order.
/// </summary>
ReliableOrdered = 2,
/// <summary>
/// Reliable only last packet. Packets can be dropped (except the last one), won't be duplicated, will arrive in order.
/// Cannot be fragmented
/// </summary>
ReliableSequenced = 3
}
/// <summary>
/// Network constants. Can be tuned from sources for your purposes.
/// </summary>
public static class NetConstants
{
//can be tuned
public const int DefaultWindowSize = 64;
public const int SocketBufferSize = 1024 * 1024; //1mb
public const int SocketTTL = 255;
public const int HeaderSize = 1;
public const int ChanneledHeaderSize = 4;
public const int FragmentHeaderSize = 6;
public const int FragmentedHeaderTotalSize = ChanneledHeaderSize + FragmentHeaderSize;
public const ushort MaxSequence = 32768;
public const ushort HalfMaxSequence = MaxSequence / 2;
//protocol
internal const int ProtocolId = 13;
internal const int MaxUdpHeaderSize = 68;
internal const int ChannelTypeCount = 4;
internal static readonly int[] PossibleMtu =
{
576 - MaxUdpHeaderSize, //minimal (RFC 1191)
1024, //most games standard
1232 - MaxUdpHeaderSize,
1460 - MaxUdpHeaderSize, //google cloud
1472 - MaxUdpHeaderSize, //VPN
1492 - MaxUdpHeaderSize, //Ethernet with LLC and SNAP, PPPoE (RFC 1042)
1500 - MaxUdpHeaderSize //Ethernet II (RFC 1191)
};
//Max possible single packet size
public static readonly int MaxPacketSize = PossibleMtu[PossibleMtu.Length - 1];
public static readonly int MaxUnreliableDataSize = MaxPacketSize - HeaderSize;
//peer specific
public const byte MaxConnectionNumber = 4;
}
}

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using System;
using System.Diagnostics;
namespace LiteNetLib
{
public class InvalidPacketException : ArgumentException
{
public InvalidPacketException(string message) : base(message)
{
}
}
public class TooBigPacketException : InvalidPacketException
{
public TooBigPacketException(string message) : base(message)
{
}
}
public enum NetLogLevel
{
Warning,
Error,
Trace,
Info
}
/// <summary>
/// Interface to implement for your own logger
/// </summary>
public interface INetLogger
{
void WriteNet(NetLogLevel level, string str, params object[] args);
}
/// <summary>
/// Static class for defining your own LiteNetLib logger instead of Console.WriteLine
/// or Debug.Log if compiled with UNITY flag
/// </summary>
public static class NetDebug
{
public static INetLogger Logger = null;
private static readonly object DebugLogLock = new object();
private static void WriteLogic(NetLogLevel logLevel, string str, params object[] args)
{
lock (DebugLogLock)
{
if (Logger == null)
{
#if UNITY_5_3_OR_NEWER
UnityEngine.Debug.Log(string.Format(str, args));
#else
Console.WriteLine(str, args);
#endif
}
else
{
Logger.WriteNet(logLevel, str, args);
}
}
}
[Conditional("DEBUG_MESSAGES")]
internal static void Write(string str)
{
WriteLogic(NetLogLevel.Trace, str);
}
[Conditional("DEBUG_MESSAGES")]
internal static void Write(NetLogLevel level, string str)
{
WriteLogic(level, str);
}
[Conditional("DEBUG_MESSAGES"), Conditional("DEBUG")]
internal static void WriteForce(string str)
{
WriteLogic(NetLogLevel.Trace, str);
}
[Conditional("DEBUG_MESSAGES"), Conditional("DEBUG")]
internal static void WriteForce(NetLogLevel level, string str)
{
WriteLogic(level, str);
}
internal static void WriteError(string str)
{
WriteLogic(NetLogLevel.Error, str);
}
}
}

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using System;
namespace LiteNetLib
{
public partial class NetManager
{
private NetPacket _poolHead;
private int _poolCount;
private readonly object _poolLock = new object();
/// <summary>
/// Maximum packet pool size (increase if you have tons of packets sending)
/// </summary>
public int PacketPoolSize = 1000;
public int PoolCount => _poolCount;
private NetPacket PoolGetWithData(PacketProperty property, byte[] data, int start, int length)
{
int headerSize = NetPacket.GetHeaderSize(property);
NetPacket packet = PoolGetPacket(length + headerSize);
packet.Property = property;
Buffer.BlockCopy(data, start, packet.RawData, headerSize, length);
return packet;
}
//Get packet with size
private NetPacket PoolGetWithProperty(PacketProperty property, int size)
{
NetPacket packet = PoolGetPacket(size + NetPacket.GetHeaderSize(property));
packet.Property = property;
return packet;
}
private NetPacket PoolGetWithProperty(PacketProperty property)
{
NetPacket packet = PoolGetPacket(NetPacket.GetHeaderSize(property));
packet.Property = property;
return packet;
}
internal NetPacket PoolGetPacket(int size)
{
if (size > NetConstants.MaxPacketSize)
return new NetPacket(size);
NetPacket packet;
lock (_poolLock)
{
packet = _poolHead;
if (packet == null)
return new NetPacket(size);
_poolHead = _poolHead.Next;
_poolCount--;
}
packet.Size = size;
if (packet.RawData.Length < size)
packet.RawData = new byte[size];
return packet;
}
internal void PoolRecycle(NetPacket packet)
{
if (packet.RawData.Length > NetConstants.MaxPacketSize || _poolCount >= PacketPoolSize)
{
//Don't pool big packets. Save memory
return;
}
//Clean fragmented flag
packet.RawData[0] = 0;
lock (_poolLock)
{
packet.Next = _poolHead;
_poolHead = packet;
_poolCount++;
}
}
}
}

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using System.Runtime.InteropServices;
using System;
using System.Collections.Generic;
using System.Net;
using System.Net.Sockets;
using System.Threading;
using LiteNetLib.Utils;
namespace LiteNetLib
{
public partial class NetManager
{
private const int ReceivePollingTime = 500000; //0.5 second
private Socket _udpSocketv4;
private Socket _udpSocketv6;
private Thread _receiveThread;
private IPEndPoint _bufferEndPointv4;
private IPEndPoint _bufferEndPointv6;
#if UNITY_2018_3_OR_NEWER
private PausedSocketFix _pausedSocketFix;
#endif
#if !LITENETLIB_UNSAFE
[ThreadStatic] private static byte[] _sendToBuffer;
#endif
[ThreadStatic] private static byte[] _endPointBuffer;
private readonly Dictionary<NativeAddr, IPEndPoint> _nativeAddrMap = new Dictionary<NativeAddr, IPEndPoint>();
private const int SioUdpConnreset = -1744830452; //SIO_UDP_CONNRESET = IOC_IN | IOC_VENDOR | 12
private static readonly IPAddress MulticastAddressV6 = IPAddress.Parse("ff02::1");
public static readonly bool IPv6Support;
/// <summary>
/// Maximum packets count that will be processed in Manual PollEvents
/// </summary>
public int MaxPacketsReceivePerUpdate = 0;
// special case in iOS (and possibly android that should be resolved in unity)
internal bool NotConnected;
public short Ttl
{
get
{
#if UNITY_SWITCH
return 0;
#else
return _udpSocketv4.Ttl;
#endif
}
internal set
{
#if !UNITY_SWITCH
_udpSocketv4.Ttl = value;
#endif
}
}
static NetManager()
{
#if DISABLE_IPV6
IPv6Support = false;
#elif !UNITY_2019_1_OR_NEWER && !UNITY_2018_4_OR_NEWER && (!UNITY_EDITOR && ENABLE_IL2CPP)
string version = UnityEngine.Application.unityVersion;
IPv6Support = Socket.OSSupportsIPv6 && int.Parse(version.Remove(version.IndexOf('f')).Split('.')[2]) >= 6;
#else
IPv6Support = Socket.OSSupportsIPv6;
#endif
}
private void RegisterEndPoint(IPEndPoint ep)
{
if (UseNativeSockets && ep is NativeEndPoint nep)
{
_nativeAddrMap.Add(new NativeAddr(nep.NativeAddress, nep.NativeAddress.Length), nep);
}
}
private void UnregisterEndPoint(IPEndPoint ep)
{
if (UseNativeSockets && ep is NativeEndPoint nep)
{
var nativeAddr = new NativeAddr(nep.NativeAddress, nep.NativeAddress.Length);
_nativeAddrMap.Remove(nativeAddr);
}
}
private bool ProcessError(SocketException ex)
{
switch (ex.SocketErrorCode)
{
case SocketError.NotConnected:
NotConnected = true;
return true;
case SocketError.Interrupted:
case SocketError.NotSocket:
case SocketError.OperationAborted:
return true;
case SocketError.ConnectionReset:
case SocketError.MessageSize:
case SocketError.TimedOut:
case SocketError.NetworkReset:
//NetDebug.Write($"[R]Ignored error: {(int)ex.SocketErrorCode} - {ex}");
break;
default:
NetDebug.WriteError($"[R]Error code: {(int)ex.SocketErrorCode} - {ex}");
CreateEvent(NetEvent.EType.Error, errorCode: ex.SocketErrorCode);
break;
}
return false;
}
private void ManualReceive(Socket socket, EndPoint bufferEndPoint)
{
//Reading data
try
{
int packetsReceived = 0;
while (socket.Available > 0)
{
ReceiveFrom(socket, ref bufferEndPoint);
packetsReceived++;
if (packetsReceived == MaxPacketsReceivePerUpdate)
break;
}
}
catch (SocketException ex)
{
ProcessError(ex);
}
catch (ObjectDisposedException)
{
}
catch (Exception e)
{
//protects socket receive thread
NetDebug.WriteError("[NM] SocketReceiveThread error: " + e );
}
}
private bool NativeReceiveFrom(ref NetPacket packet, IntPtr s, byte[] addrBuffer, int addrSize)
{
//Reading data
packet.Size = NativeSocket.RecvFrom(s, packet.RawData, NetConstants.MaxPacketSize, addrBuffer, ref addrSize);
if (packet.Size == 0)
return false; //socket closed
if (packet.Size == -1)
{
var errorCode = NativeSocket.GetSocketError();
//Linux timeout EAGAIN
return errorCode == SocketError.WouldBlock || errorCode == SocketError.TimedOut || ProcessError(new SocketException((int)errorCode)) == false;
}
var nativeAddr = new NativeAddr(addrBuffer, addrSize);
if (!_nativeAddrMap.TryGetValue(nativeAddr, out var endPoint))
endPoint = new NativeEndPoint(addrBuffer);
//All ok!
//NetDebug.WriteForce($"[R]Received data from {endPoint}, result: {packet.Size}");
OnMessageReceived(packet, endPoint);
packet = PoolGetPacket(NetConstants.MaxPacketSize);
return true;
}
private void NativeReceiveLogic()
{
IntPtr socketHandle4 = _udpSocketv4.Handle;
IntPtr socketHandle6 = _udpSocketv6?.Handle ?? IntPtr.Zero;
byte[] addrBuffer4 = new byte[NativeSocket.IPv4AddrSize];
byte[] addrBuffer6 = new byte[NativeSocket.IPv6AddrSize];
int addrSize4 = addrBuffer4.Length;
int addrSize6 = addrBuffer6.Length;
var selectReadList = new List<Socket>(2);
var socketv4 = _udpSocketv4;
var socketV6 = _udpSocketv6;
var packet = PoolGetPacket(NetConstants.MaxPacketSize);
while (IsRunning)
{
if (socketV6 == null)
{
if (NativeReceiveFrom(ref packet, socketHandle4, addrBuffer4, addrSize4) == false)
return;
continue;
}
bool messageReceived = false;
if (socketv4.Available != 0)
{
if (NativeReceiveFrom(ref packet, socketHandle4, addrBuffer4, addrSize4) == false)
return;
messageReceived = true;
}
if (socketV6.Available != 0)
{
if (NativeReceiveFrom(ref packet, socketHandle6, addrBuffer6, addrSize6) == false)
return;
messageReceived = true;
}
if (messageReceived)
continue;
selectReadList.Clear();
selectReadList.Add(socketv4);
selectReadList.Add(socketV6);
try
{
Socket.Select(selectReadList, null, null, ReceivePollingTime);
}
catch (SocketException ex)
{
if (ProcessError(ex))
return;
}
catch (ObjectDisposedException)
{
//socket closed
return;
}
catch (ThreadAbortException)
{
//thread closed
return;
}
catch (Exception e)
{
//protects socket receive thread
NetDebug.WriteError("[NM] SocketReceiveThread error: " + e );
}
}
}
private void ReceiveFrom(Socket s, ref EndPoint bufferEndPoint)
{
var packet = PoolGetPacket(NetConstants.MaxPacketSize);
packet.Size = s.ReceiveFrom(packet.RawData, 0, NetConstants.MaxPacketSize, SocketFlags.None, ref bufferEndPoint);
OnMessageReceived(packet, (IPEndPoint)bufferEndPoint);
}
private void ReceiveLogic()
{
EndPoint bufferEndPoint4 = new IPEndPoint(IPAddress.Any, 0);
EndPoint bufferEndPoint6 = new IPEndPoint(IPAddress.IPv6Any, 0);
var selectReadList = new List<Socket>(2);
var socketv4 = _udpSocketv4;
var socketV6 = _udpSocketv6;
while (IsRunning)
{
//Reading data
try
{
if (socketV6 == null)
{
if (socketv4.Available == 0 && !socketv4.Poll(ReceivePollingTime, SelectMode.SelectRead))
continue;
ReceiveFrom(socketv4, ref bufferEndPoint4);
}
else
{
bool messageReceived = false;
if (socketv4.Available != 0)
{
ReceiveFrom(socketv4, ref bufferEndPoint4);
messageReceived = true;
}
if (socketV6.Available != 0)
{
ReceiveFrom(socketV6, ref bufferEndPoint6);
messageReceived = true;
}
if (messageReceived)
continue;
selectReadList.Clear();
selectReadList.Add(socketv4);
selectReadList.Add(socketV6);
Socket.Select(selectReadList, null, null, ReceivePollingTime);
}
//NetDebug.Write(NetLogLevel.Trace, $"[R]Received data from {bufferEndPoint}, result: {packet.Size}");
}
catch (SocketException ex)
{
if (ProcessError(ex))
return;
}
catch (ObjectDisposedException)
{
//socket closed
return;
}
catch (ThreadAbortException)
{
//thread closed
return;
}
catch (Exception e)
{
//protects socket receive thread
NetDebug.WriteError("[NM] SocketReceiveThread error: " + e );
}
}
}
/// <summary>
/// Start logic thread and listening on selected port
/// </summary>
/// <param name="addressIPv4">bind to specific ipv4 address</param>
/// <param name="addressIPv6">bind to specific ipv6 address</param>
/// <param name="port">port to listen</param>
/// <param name="manualMode">mode of library</param>
public bool Start(IPAddress addressIPv4, IPAddress addressIPv6, int port, bool manualMode)
{
if (IsRunning && NotConnected == false)
return false;
NotConnected = false;
_manualMode = manualMode;
UseNativeSockets = UseNativeSockets && NativeSocket.IsSupported;
_udpSocketv4 = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
if (!BindSocket(_udpSocketv4, new IPEndPoint(addressIPv4, port)))
return false;
LocalPort = ((IPEndPoint) _udpSocketv4.LocalEndPoint).Port;
#if UNITY_2018_3_OR_NEWER
if (_pausedSocketFix == null)
_pausedSocketFix = new PausedSocketFix(this, addressIPv4, addressIPv6, port, manualMode);
#endif
IsRunning = true;
if (_manualMode)
{
_bufferEndPointv4 = new IPEndPoint(IPAddress.Any, 0);
}
//Check IPv6 support
if (IPv6Support && IPv6Enabled)
{
_udpSocketv6 = new Socket(AddressFamily.InterNetworkV6, SocketType.Dgram, ProtocolType.Udp);
//Use one port for two sockets
if (BindSocket(_udpSocketv6, new IPEndPoint(addressIPv6, LocalPort)))
{
if (_manualMode)
{
_bufferEndPointv6 = new IPEndPoint(IPAddress.IPv6Any, 0);
}
}
else
{
_udpSocketv6 = null;
}
}
if (!manualMode)
{
ThreadStart ts = ReceiveLogic;
if (UseNativeSockets)
ts = NativeReceiveLogic;
_receiveThread = new Thread(ts)
{
Name = $"ReceiveThread({LocalPort})",
IsBackground = true
};
_receiveThread.Start();
if (_logicThread == null)
{
_logicThread = new Thread(UpdateLogic) { Name = "LogicThread", IsBackground = true };
_logicThread.Start();
}
}
return true;
}
private bool BindSocket(Socket socket, IPEndPoint ep)
{
//Setup socket
socket.ReceiveTimeout = 500;
socket.SendTimeout = 500;
socket.ReceiveBufferSize = NetConstants.SocketBufferSize;
socket.SendBufferSize = NetConstants.SocketBufferSize;
socket.Blocking = true;
if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
{
try
{
socket.IOControl(SioUdpConnreset, new byte[] {0}, null);
}
catch
{
//ignored
}
}
try
{
socket.ExclusiveAddressUse = !ReuseAddress;
socket.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.ReuseAddress, ReuseAddress);
}
catch
{
//Unity with IL2CPP throws an exception here, it doesn't matter in most cases so just ignore it
}
if (ep.AddressFamily == AddressFamily.InterNetwork)
{
Ttl = NetConstants.SocketTTL;
try { socket.EnableBroadcast = true; }
catch (SocketException e)
{
NetDebug.WriteError($"[B]Broadcast error: {e.SocketErrorCode}");
}
if (!RuntimeInformation.IsOSPlatform(OSPlatform.OSX))
{
try { socket.DontFragment = true; }
catch (SocketException e)
{
NetDebug.WriteError($"[B]DontFragment error: {e.SocketErrorCode}");
}
}
}
//Bind
try
{
socket.Bind(ep);
NetDebug.Write(NetLogLevel.Trace, $"[B]Successfully binded to port: {((IPEndPoint)socket.LocalEndPoint).Port}, AF: {socket.AddressFamily}");
//join multicast
if (ep.AddressFamily == AddressFamily.InterNetworkV6)
{
try
{
#if !UNITY_2018_3_OR_NEWER
socket.SetSocketOption(
SocketOptionLevel.IPv6,
SocketOptionName.AddMembership,
new IPv6MulticastOption(MulticastAddressV6));
#endif
}
catch (Exception)
{
// Unity3d throws exception - ignored
}
}
}
catch (SocketException bindException)
{
switch (bindException.SocketErrorCode)
{
//IPv6 bind fix
case SocketError.AddressAlreadyInUse:
if (socket.AddressFamily == AddressFamily.InterNetworkV6)
{
try
{
//Set IPv6Only
socket.DualMode = false;
socket.Bind(ep);
}
catch (SocketException ex)
{
//because its fixed in 2018_3
NetDebug.WriteError($"[B]Bind exception: {ex}, errorCode: {ex.SocketErrorCode}");
return false;
}
return true;
}
break;
//hack for iOS (Unity3D)
case SocketError.AddressFamilyNotSupported:
return true;
}
NetDebug.WriteError($"[B]Bind exception: {bindException}, errorCode: {bindException.SocketErrorCode}");
return false;
}
return true;
}
internal int SendRawAndRecycle(NetPacket packet, IPEndPoint remoteEndPoint)
{
int result = SendRaw(packet.RawData, 0, packet.Size, remoteEndPoint);
PoolRecycle(packet);
return result;
}
internal int SendRaw(NetPacket packet, IPEndPoint remoteEndPoint)
{
return SendRaw(packet.RawData, 0, packet.Size, remoteEndPoint);
}
internal int SendRaw(byte[] message, int start, int length, IPEndPoint remoteEndPoint)
{
if (!IsRunning)
return 0;
NetPacket expandedPacket = null;
if (_extraPacketLayer != null)
{
expandedPacket = PoolGetPacket(length + _extraPacketLayer.ExtraPacketSizeForLayer);
Buffer.BlockCopy(message, start, expandedPacket.RawData, 0, length);
start = 0;
_extraPacketLayer.ProcessOutBoundPacket(ref remoteEndPoint, ref expandedPacket.RawData, ref start, ref length);
message = expandedPacket.RawData;
}
var socket = _udpSocketv4;
if (remoteEndPoint.AddressFamily == AddressFamily.InterNetworkV6 && IPv6Support)
{
socket = _udpSocketv6;
if (socket == null)
return 0;
}
int result;
try
{
if (UseNativeSockets)
{
byte[] socketAddress;
if (remoteEndPoint is NativeEndPoint nep)
{
socketAddress = nep.NativeAddress;
}
else //Convert endpoint to raw
{
if (_endPointBuffer == null)
_endPointBuffer = new byte[NativeSocket.IPv6AddrSize];
socketAddress = _endPointBuffer;
bool ipv4 = remoteEndPoint.AddressFamily == AddressFamily.InterNetwork;
short addressFamily = NativeSocket.GetNativeAddressFamily(remoteEndPoint);
socketAddress[0] = (byte) (addressFamily);
socketAddress[1] = (byte) (addressFamily >> 8);
socketAddress[2] = (byte) (remoteEndPoint.Port >> 8);
socketAddress[3] = (byte) (remoteEndPoint.Port);
if (ipv4)
{
#pragma warning disable 618
long addr = remoteEndPoint.Address.Address;
#pragma warning restore 618
socketAddress[4] = (byte) (addr);
socketAddress[5] = (byte) (addr >> 8);
socketAddress[6] = (byte) (addr >> 16);
socketAddress[7] = (byte) (addr >> 24);
}
else
{
#if NETCOREAPP || NETSTANDARD2_1 || NETSTANDARD2_1_OR_GREATER
remoteEndPoint.Address.TryWriteBytes(new Span<byte>(socketAddress, 8, 16), out _);
#else
byte[] addrBytes = remoteEndPoint.Address.GetAddressBytes();
Buffer.BlockCopy(addrBytes, 0, socketAddress, 8, 16);
#endif
}
}
#if LITENETLIB_UNSAFE
unsafe
{
fixed (byte* dataWithOffset = &message[start])
{
result =
NativeSocket.SendTo(socket.Handle, dataWithOffset, length, socketAddress, socketAddress.Length);
}
}
#else
if (start > 0)
{
if (_sendToBuffer == null)
_sendToBuffer = new byte[NetConstants.MaxPacketSize];
Buffer.BlockCopy(message, start, _sendToBuffer, 0, length);
message = _sendToBuffer;
}
result = NativeSocket.SendTo(socket.Handle, message, length, socketAddress, socketAddress.Length);
#endif
if (result == -1)
throw NativeSocket.GetSocketException();
}
else
{
result = socket.SendTo(message, start, length, SocketFlags.None, remoteEndPoint);
}
//NetDebug.WriteForce("[S]Send packet to {0}, result: {1}", remoteEndPoint, result);
}
catch (SocketException ex)
{
switch (ex.SocketErrorCode)
{
case SocketError.NoBufferSpaceAvailable:
case SocketError.Interrupted:
return 0;
case SocketError.MessageSize:
NetDebug.Write(NetLogLevel.Trace, $"[SRD] 10040, datalen: {length}");
return 0;
case SocketError.HostUnreachable:
case SocketError.NetworkUnreachable:
if (DisconnectOnUnreachable && TryGetPeer(remoteEndPoint, out var fromPeer))
{
DisconnectPeerForce(
fromPeer,
ex.SocketErrorCode == SocketError.HostUnreachable
? DisconnectReason.HostUnreachable
: DisconnectReason.NetworkUnreachable,
ex.SocketErrorCode,
null);
}
CreateEvent(NetEvent.EType.Error, remoteEndPoint: remoteEndPoint, errorCode: ex.SocketErrorCode);
return -1;
default:
NetDebug.WriteError($"[S] {ex}");
return -1;
}
}
catch (Exception ex)
{
NetDebug.WriteError($"[S] {ex}");
return 0;
}
finally
{
if (expandedPacket != null)
{
PoolRecycle(expandedPacket);
}
}
if (result <= 0)
return 0;
if (EnableStatistics)
{
Statistics.IncrementPacketsSent();
Statistics.AddBytesSent(length);
}
return result;
}
public bool SendBroadcast(NetDataWriter writer, int port)
{
return SendBroadcast(writer.Data, 0, writer.Length, port);
}
public bool SendBroadcast(byte[] data, int port)
{
return SendBroadcast(data, 0, data.Length, port);
}
public bool SendBroadcast(byte[] data, int start, int length, int port)
{
if (!IsRunning)
return false;
NetPacket packet;
if (_extraPacketLayer != null)
{
var headerSize = NetPacket.GetHeaderSize(PacketProperty.Broadcast);
packet = PoolGetPacket(headerSize + length + _extraPacketLayer.ExtraPacketSizeForLayer);
packet.Property = PacketProperty.Broadcast;
Buffer.BlockCopy(data, start, packet.RawData, headerSize, length);
var checksumComputeStart = 0;
int preCrcLength = length + headerSize;
IPEndPoint emptyEp = null;
_extraPacketLayer.ProcessOutBoundPacket(ref emptyEp, ref packet.RawData, ref checksumComputeStart, ref preCrcLength);
}
else
{
packet = PoolGetWithData(PacketProperty.Broadcast, data, start, length);
}
bool broadcastSuccess = false;
bool multicastSuccess = false;
try
{
broadcastSuccess = _udpSocketv4.SendTo(
packet.RawData,
0,
packet.Size,
SocketFlags.None,
new IPEndPoint(IPAddress.Broadcast, port)) > 0;
if (_udpSocketv6 != null)
{
multicastSuccess = _udpSocketv6.SendTo(
packet.RawData,
0,
packet.Size,
SocketFlags.None,
new IPEndPoint(MulticastAddressV6, port)) > 0;
}
}
catch (Exception ex)
{
NetDebug.WriteError($"[S][MCAST] {ex}");
return broadcastSuccess;
}
finally
{
PoolRecycle(packet);
}
return broadcastSuccess || multicastSuccess;
}
private void CloseSocket()
{
IsRunning = false;
_udpSocketv4?.Close();
_udpSocketv6?.Close();
_udpSocketv4 = null;
_udpSocketv6 = null;
if (_receiveThread != null && _receiveThread != Thread.CurrentThread)
_receiveThread.Join();
_receiveThread = null;
}
}
}

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using System;
using LiteNetLib.Utils;
namespace LiteNetLib
{
internal enum PacketProperty : byte
{
Unreliable,
Channeled,
Ack,
Ping,
Pong,
ConnectRequest,
ConnectAccept,
Disconnect,
UnconnectedMessage,
MtuCheck,
MtuOk,
Broadcast,
Merged,
ShutdownOk,
PeerNotFound,
InvalidProtocol,
NatMessage,
Empty
}
internal sealed class NetPacket
{
private static readonly int PropertiesCount = Enum.GetValues(typeof(PacketProperty)).Length;
private static readonly int[] HeaderSizes;
static NetPacket()
{
HeaderSizes = NetUtils.AllocatePinnedUninitializedArray<int>(PropertiesCount);
for (int i = 0; i < HeaderSizes.Length; i++)
{
switch ((PacketProperty)i)
{
case PacketProperty.Channeled:
case PacketProperty.Ack:
HeaderSizes[i] = NetConstants.ChanneledHeaderSize;
break;
case PacketProperty.Ping:
HeaderSizes[i] = NetConstants.HeaderSize + 2;
break;
case PacketProperty.ConnectRequest:
HeaderSizes[i] = NetConnectRequestPacket.HeaderSize;
break;
case PacketProperty.ConnectAccept:
HeaderSizes[i] = NetConnectAcceptPacket.Size;
break;
case PacketProperty.Disconnect:
HeaderSizes[i] = NetConstants.HeaderSize + 8;
break;
case PacketProperty.Pong:
HeaderSizes[i] = NetConstants.HeaderSize + 10;
break;
default:
HeaderSizes[i] = NetConstants.HeaderSize;
break;
}
}
}
//Header
public PacketProperty Property
{
get => (PacketProperty)(RawData[0] & 0x1F);
set => RawData[0] = (byte)((RawData[0] & 0xE0) | (byte)value);
}
public byte ConnectionNumber
{
get => (byte)((RawData[0] & 0x60) >> 5);
set => RawData[0] = (byte) ((RawData[0] & 0x9F) | (value << 5));
}
public ushort Sequence
{
get => BitConverter.ToUInt16(RawData, 1);
set => FastBitConverter.GetBytes(RawData, 1, value);
}
public bool IsFragmented => (RawData[0] & 0x80) != 0;
public void MarkFragmented()
{
RawData[0] |= 0x80; //set first bit
}
public byte ChannelId
{
get => RawData[3];
set => RawData[3] = value;
}
public ushort FragmentId
{
get => BitConverter.ToUInt16(RawData, 4);
set => FastBitConverter.GetBytes(RawData, 4, value);
}
public ushort FragmentPart
{
get => BitConverter.ToUInt16(RawData, 6);
set => FastBitConverter.GetBytes(RawData, 6, value);
}
public ushort FragmentsTotal
{
get => BitConverter.ToUInt16(RawData, 8);
set => FastBitConverter.GetBytes(RawData, 8, value);
}
//Data
public byte[] RawData;
public int Size;
//Delivery
public object UserData;
//Pool node
public NetPacket Next;
public NetPacket(int size)
{
RawData = new byte[size];
Size = size;
}
public NetPacket(PacketProperty property, int size)
{
size += GetHeaderSize(property);
RawData = new byte[size];
Property = property;
Size = size;
}
public static int GetHeaderSize(PacketProperty property)
{
return HeaderSizes[(int)property];
}
public int GetHeaderSize()
{
return HeaderSizes[RawData[0] & 0x1F];
}
public bool Verify()
{
byte property = (byte)(RawData[0] & 0x1F);
if (property >= PropertiesCount)
return false;
int headerSize = HeaderSizes[property];
bool fragmented = (RawData[0] & 0x80) != 0;
return Size >= headerSize && (!fragmented || Size >= headerSize + NetConstants.FragmentHeaderSize);
}
}
}

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using System.Threading;
namespace LiteNetLib
{
public sealed class NetStatistics
{
private long _packetsSent;
private long _packetsReceived;
private long _bytesSent;
private long _bytesReceived;
private long _packetLoss;
public long PacketsSent => Interlocked.Read(ref _packetsSent);
public long PacketsReceived => Interlocked.Read(ref _packetsReceived);
public long BytesSent => Interlocked.Read(ref _bytesSent);
public long BytesReceived => Interlocked.Read(ref _bytesReceived);
public long PacketLoss => Interlocked.Read(ref _packetLoss);
public long PacketLossPercent
{
get
{
long sent = PacketsSent, loss = PacketLoss;
return sent == 0 ? 0 : loss * 100 / sent;
}
}
public void Reset()
{
Interlocked.Exchange(ref _packetsSent, 0);
Interlocked.Exchange(ref _packetsReceived, 0);
Interlocked.Exchange(ref _bytesSent, 0);
Interlocked.Exchange(ref _bytesReceived, 0);
Interlocked.Exchange(ref _packetLoss, 0);
}
public void IncrementPacketsSent()
{
Interlocked.Increment(ref _packetsSent);
}
public void IncrementPacketsReceived()
{
Interlocked.Increment(ref _packetsReceived);
}
public void AddBytesSent(long bytesSent)
{
Interlocked.Add(ref _bytesSent, bytesSent);
}
public void AddBytesReceived(long bytesReceived)
{
Interlocked.Add(ref _bytesReceived, bytesReceived);
}
public void IncrementPacketLoss()
{
Interlocked.Increment(ref _packetLoss);
}
public void AddPacketLoss(long packetLoss)
{
Interlocked.Add(ref _packetLoss, packetLoss);
}
public override string ToString()
{
return
string.Format(
"BytesReceived: {0}\nPacketsReceived: {1}\nBytesSent: {2}\nPacketsSent: {3}\nPacketLoss: {4}\nPacketLossPercent: {5}\n",
BytesReceived,
PacketsReceived,
BytesSent,
PacketsSent,
PacketLoss,
PacketLossPercent);
}
}
}

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using System;
using System.Collections.Generic;
using System.Net;
using System.Net.Sockets;
using System.Net.NetworkInformation;
namespace LiteNetLib
{
/// <summary>
/// Address type that you want to receive from NetUtils.GetLocalIp method
/// </summary>
[Flags]
public enum LocalAddrType
{
IPv4 = 1,
IPv6 = 2,
All = IPv4 | IPv6
}
/// <summary>
/// Some specific network utilities
/// </summary>
public static class NetUtils
{
public static IPEndPoint MakeEndPoint(string hostStr, int port)
{
return new IPEndPoint(ResolveAddress(hostStr), port);
}
public static IPAddress ResolveAddress(string hostStr)
{
if(hostStr == "localhost")
return IPAddress.Loopback;
if (!IPAddress.TryParse(hostStr, out var ipAddress))
{
if (NetManager.IPv6Support)
ipAddress = ResolveAddress(hostStr, AddressFamily.InterNetworkV6);
if (ipAddress == null)
ipAddress = ResolveAddress(hostStr, AddressFamily.InterNetwork);
}
if (ipAddress == null)
throw new ArgumentException("Invalid address: " + hostStr);
return ipAddress;
}
public static IPAddress ResolveAddress(string hostStr, AddressFamily addressFamily)
{
IPAddress[] addresses = Dns.GetHostEntry(hostStr).AddressList;
foreach (IPAddress ip in addresses)
{
if (ip.AddressFamily == addressFamily)
{
return ip;
}
}
return null;
}
/// <summary>
/// Get all local ip addresses
/// </summary>
/// <param name="addrType">type of address (IPv4, IPv6 or both)</param>
/// <returns>List with all local ip addresses</returns>
public static List<string> GetLocalIpList(LocalAddrType addrType)
{
List<string> targetList = new List<string>();
GetLocalIpList(targetList, addrType);
return targetList;
}
/// <summary>
/// Get all local ip addresses (non alloc version)
/// </summary>
/// <param name="targetList">result list</param>
/// <param name="addrType">type of address (IPv4, IPv6 or both)</param>
public static void GetLocalIpList(IList<string> targetList, LocalAddrType addrType)
{
bool ipv4 = (addrType & LocalAddrType.IPv4) == LocalAddrType.IPv4;
bool ipv6 = (addrType & LocalAddrType.IPv6) == LocalAddrType.IPv6;
try
{
foreach (NetworkInterface ni in NetworkInterface.GetAllNetworkInterfaces())
{
//Skip loopback and disabled network interfaces
if (ni.NetworkInterfaceType == NetworkInterfaceType.Loopback ||
ni.OperationalStatus != OperationalStatus.Up)
continue;
var ipProps = ni.GetIPProperties();
//Skip address without gateway
if (ipProps.GatewayAddresses.Count == 0)
continue;
foreach (UnicastIPAddressInformation ip in ipProps.UnicastAddresses)
{
var address = ip.Address;
if ((ipv4 && address.AddressFamily == AddressFamily.InterNetwork) ||
(ipv6 && address.AddressFamily == AddressFamily.InterNetworkV6))
targetList.Add(address.ToString());
}
}
//Fallback mode (unity android)
if (targetList.Count == 0)
{
IPAddress[] addresses = Dns.GetHostEntry(Dns.GetHostName()).AddressList;
foreach (IPAddress ip in addresses)
{
if((ipv4 && ip.AddressFamily == AddressFamily.InterNetwork) ||
(ipv6 && ip.AddressFamily == AddressFamily.InterNetworkV6))
targetList.Add(ip.ToString());
}
}
}
catch
{
//ignored
}
if (targetList.Count == 0)
{
if(ipv4)
targetList.Add("127.0.0.1");
if(ipv6)
targetList.Add("::1");
}
}
private static readonly List<string> IpList = new List<string>();
/// <summary>
/// Get first detected local ip address
/// </summary>
/// <param name="addrType">type of address (IPv4, IPv6 or both)</param>
/// <returns>IP address if available. Else - string.Empty</returns>
public static string GetLocalIp(LocalAddrType addrType)
{
lock (IpList)
{
IpList.Clear();
GetLocalIpList(IpList, addrType);
return IpList.Count == 0 ? string.Empty : IpList[0];
}
}
// ===========================================
// Internal and debug log related stuff
// ===========================================
internal static void PrintInterfaceInfos()
{
NetDebug.WriteForce(NetLogLevel.Info, $"IPv6Support: { NetManager.IPv6Support}");
try
{
foreach (NetworkInterface ni in NetworkInterface.GetAllNetworkInterfaces())
{
foreach (UnicastIPAddressInformation ip in ni.GetIPProperties().UnicastAddresses)
{
if (ip.Address.AddressFamily == AddressFamily.InterNetwork ||
ip.Address.AddressFamily == AddressFamily.InterNetworkV6)
{
NetDebug.WriteForce(
NetLogLevel.Info,
$"Interface: {ni.Name}, Type: {ni.NetworkInterfaceType}, Ip: {ip.Address}, OpStatus: {ni.OperationalStatus}");
}
}
}
}
catch (Exception e)
{
NetDebug.WriteForce(NetLogLevel.Info, $"Error while getting interface infos: {e}");
}
}
internal static int RelativeSequenceNumber(int number, int expected)
{
return (number - expected + NetConstants.MaxSequence + NetConstants.HalfMaxSequence) % NetConstants.MaxSequence - NetConstants.HalfMaxSequence;
}
internal static T[] AllocatePinnedUninitializedArray<T>(int count) where T : unmanaged
{
#if NET5_0_OR_GREATER || NET5_0
return GC.AllocateUninitializedArray<T>(count, true);
#else
return new T[count];
#endif
}
}
}

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fileFormatVersion: 2
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MonoImporter:
externalObjects: {}
serializedVersion: 2
defaultReferences: []
executionOrder: 0
icon: {instanceID: 0}
userData:
assetBundleName:
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#if UNITY_2018_3_OR_NEWER
using System.Net;
namespace LiteNetLib
{
public class PausedSocketFix
{
private readonly NetManager _netManager;
private readonly IPAddress _ipv4;
private readonly IPAddress _ipv6;
private readonly int _port;
private readonly bool _manualMode;
private bool _initialized;
public PausedSocketFix(NetManager netManager, IPAddress ipv4, IPAddress ipv6, int port, bool manualMode)
{
_netManager = netManager;
_ipv4 = ipv4;
_ipv6 = ipv6;
_port = port;
_manualMode = manualMode;
UnityEngine.Application.focusChanged += Application_focusChanged;
_initialized = true;
}
public void Deinitialize()
{
if (_initialized)
UnityEngine.Application.focusChanged -= Application_focusChanged;
_initialized = false;
}
private void Application_focusChanged(bool focused)
{
//If coming back into focus see if a reconnect is needed.
if (focused)
{
//try reconnect
if (!_initialized)
return;
//Was intentionally disconnected at some point.
if (!_netManager.IsRunning)
return;
//Socket is in working state.
if (_netManager.NotConnected == false)
return;
//Socket isn't running but should be. Try to start again.
if (!_netManager.Start(_ipv4, _ipv6, _port, _manualMode))
{
NetDebug.WriteError($"[S] Cannot restore connection. Ipv4 {_ipv4}, Ipv6 {_ipv6}, Port {_port}, ManualMode {_manualMode}");
}
}
}
}
}
#endif

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fileFormatVersion: 2
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externalObjects: {}
serializedVersion: 2
defaultReferences: []
executionOrder: 0
icon: {instanceID: 0}
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namespace LiteNetLib
{
public readonly ref struct PooledPacket
{
internal readonly NetPacket _packet;
internal readonly byte _channelNumber;
/// <summary>
/// Maximum data size that you can put into such packet
/// </summary>
public readonly int MaxUserDataSize;
/// <summary>
/// Offset for user data when writing to Data array
/// </summary>
public readonly int UserDataOffset;
/// <summary>
/// Raw packet data. Do not modify header! Use UserDataOffset as start point for your data
/// </summary>
public byte[] Data => _packet.RawData;
internal PooledPacket(NetPacket packet, int maxDataSize, byte channelNumber)
{
_packet = packet;
UserDataOffset = _packet.GetHeaderSize();
_packet.Size = UserDataOffset;
MaxUserDataSize = maxDataSize - UserDataOffset;
_channelNumber = channelNumber;
}
}
}

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fileFormatVersion: 2
guid: fb2cf9f0ef17bc84ba55d4d130e3ee98
MonoImporter:
externalObjects: {}
serializedVersion: 2
defaultReferences: []
executionOrder: 0
icon: {instanceID: 0}
userData:
assetBundleName:
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using System;
namespace LiteNetLib
{
internal sealed class ReliableChannel : BaseChannel
{
private struct PendingPacket
{
private NetPacket _packet;
private long _timeStamp;
private bool _isSent;
public override string ToString()
{
return _packet == null ? "Empty" : _packet.Sequence.ToString();
}
public void Init(NetPacket packet)
{
_packet = packet;
_isSent = false;
}
//Returns true if there is a pending packet inside
public bool TrySend(long currentTime, NetPeer peer)
{
if (_packet == null)
return false;
if (_isSent) //check send time
{
double resendDelay = peer.ResendDelay * TimeSpan.TicksPerMillisecond;
double packetHoldTime = currentTime - _timeStamp;
if (packetHoldTime < resendDelay)
return true;
NetDebug.Write($"[RC]Resend: {packetHoldTime} > {resendDelay}");
}
_timeStamp = currentTime;
_isSent = true;
peer.SendUserData(_packet);
return true;
}
public bool Clear(NetPeer peer)
{
if (_packet != null)
{
peer.RecycleAndDeliver(_packet);
_packet = null;
return true;
}
return false;
}
}
private readonly NetPacket _outgoingAcks; //for send acks
private readonly PendingPacket[] _pendingPackets; //for unacked packets and duplicates
private readonly NetPacket[] _receivedPackets; //for order
private readonly bool[] _earlyReceived; //for unordered
private int _localSeqence;
private int _remoteSequence;
private int _localWindowStart;
private int _remoteWindowStart;
private bool _mustSendAcks;
private readonly DeliveryMethod _deliveryMethod;
private readonly bool _ordered;
private readonly int _windowSize;
private const int BitsInByte = 8;
private readonly byte _id;
public ReliableChannel(NetPeer peer, bool ordered, byte id) : base(peer)
{
_id = id;
_windowSize = NetConstants.DefaultWindowSize;
_ordered = ordered;
_pendingPackets = new PendingPacket[_windowSize];
for (int i = 0; i < _pendingPackets.Length; i++)
_pendingPackets[i] = new PendingPacket();
if (_ordered)
{
_deliveryMethod = DeliveryMethod.ReliableOrdered;
_receivedPackets = new NetPacket[_windowSize];
}
else
{
_deliveryMethod = DeliveryMethod.ReliableUnordered;
_earlyReceived = new bool[_windowSize];
}
_localWindowStart = 0;
_localSeqence = 0;
_remoteSequence = 0;
_remoteWindowStart = 0;
_outgoingAcks = new NetPacket(PacketProperty.Ack, (_windowSize - 1) / BitsInByte + 2) {ChannelId = id};
}
//ProcessAck in packet
private void ProcessAck(NetPacket packet)
{
if (packet.Size != _outgoingAcks.Size)
{
NetDebug.Write("[PA]Invalid acks packet size");
return;
}
ushort ackWindowStart = packet.Sequence;
int windowRel = NetUtils.RelativeSequenceNumber(_localWindowStart, ackWindowStart);
if (ackWindowStart >= NetConstants.MaxSequence || windowRel < 0)
{
NetDebug.Write("[PA]Bad window start");
return;
}
//check relevance
if (windowRel >= _windowSize)
{
NetDebug.Write("[PA]Old acks");
return;
}
byte[] acksData = packet.RawData;
lock (_pendingPackets)
{
for (int pendingSeq = _localWindowStart;
pendingSeq != _localSeqence;
pendingSeq = (pendingSeq + 1) % NetConstants.MaxSequence)
{
int rel = NetUtils.RelativeSequenceNumber(pendingSeq, ackWindowStart);
if (rel >= _windowSize)
{
NetDebug.Write("[PA]REL: " + rel);
break;
}
int pendingIdx = pendingSeq % _windowSize;
int currentByte = NetConstants.ChanneledHeaderSize + pendingIdx / BitsInByte;
int currentBit = pendingIdx % BitsInByte;
if ((acksData[currentByte] & (1 << currentBit)) == 0)
{
if (Peer.NetManager.EnableStatistics)
{
Peer.Statistics.IncrementPacketLoss();
Peer.NetManager.Statistics.IncrementPacketLoss();
}
//Skip false ack
NetDebug.Write($"[PA]False ack: {pendingSeq}");
continue;
}
if (pendingSeq == _localWindowStart)
{
//Move window
_localWindowStart = (_localWindowStart + 1) % NetConstants.MaxSequence;
}
//clear packet
if (_pendingPackets[pendingIdx].Clear(Peer))
NetDebug.Write($"[PA]Removing reliableInOrder ack: {pendingSeq} - true");
}
}
}
protected override bool SendNextPackets()
{
if (_mustSendAcks)
{
_mustSendAcks = false;
NetDebug.Write("[RR]SendAcks");
lock(_outgoingAcks)
Peer.SendUserData(_outgoingAcks);
}
long currentTime = DateTime.UtcNow.Ticks;
bool hasPendingPackets = false;
lock (_pendingPackets)
{
//get packets from queue
lock (OutgoingQueue)
{
while (OutgoingQueue.Count > 0)
{
int relate = NetUtils.RelativeSequenceNumber(_localSeqence, _localWindowStart);
if (relate >= _windowSize)
break;
var netPacket = OutgoingQueue.Dequeue();
netPacket.Sequence = (ushort) _localSeqence;
netPacket.ChannelId = _id;
_pendingPackets[_localSeqence % _windowSize].Init(netPacket);
_localSeqence = (_localSeqence + 1) % NetConstants.MaxSequence;
}
}
//send
for (int pendingSeq = _localWindowStart; pendingSeq != _localSeqence; pendingSeq = (pendingSeq + 1) % NetConstants.MaxSequence)
{
// Please note: TrySend is invoked on a mutable struct, it's important to not extract it into a variable here
if (_pendingPackets[pendingSeq % _windowSize].TrySend(currentTime, Peer))
hasPendingPackets = true;
}
}
return hasPendingPackets || _mustSendAcks || OutgoingQueue.Count > 0;
}
//Process incoming packet
public override bool ProcessPacket(NetPacket packet)
{
if (packet.Property == PacketProperty.Ack)
{
ProcessAck(packet);
return false;
}
int seq = packet.Sequence;
if (seq >= NetConstants.MaxSequence)
{
NetDebug.Write("[RR]Bad sequence");
return false;
}
int relate = NetUtils.RelativeSequenceNumber(seq, _remoteWindowStart);
int relateSeq = NetUtils.RelativeSequenceNumber(seq, _remoteSequence);
if (relateSeq > _windowSize)
{
NetDebug.Write("[RR]Bad sequence");
return false;
}
//Drop bad packets
if (relate < 0)
{
//Too old packet doesn't ack
NetDebug.Write("[RR]ReliableInOrder too old");
return false;
}
if (relate >= _windowSize * 2)
{
//Some very new packet
NetDebug.Write("[RR]ReliableInOrder too new");
return false;
}
//If very new - move window
int ackIdx;
int ackByte;
int ackBit;
lock (_outgoingAcks)
{
if (relate >= _windowSize)
{
//New window position
int newWindowStart = (_remoteWindowStart + relate - _windowSize + 1) % NetConstants.MaxSequence;
_outgoingAcks.Sequence = (ushort) newWindowStart;
//Clean old data
while (_remoteWindowStart != newWindowStart)
{
ackIdx = _remoteWindowStart % _windowSize;
ackByte = NetConstants.ChanneledHeaderSize + ackIdx / BitsInByte;
ackBit = ackIdx % BitsInByte;
_outgoingAcks.RawData[ackByte] &= (byte) ~(1 << ackBit);
_remoteWindowStart = (_remoteWindowStart + 1) % NetConstants.MaxSequence;
}
}
//Final stage - process valid packet
//trigger acks send
_mustSendAcks = true;
ackIdx = seq % _windowSize;
ackByte = NetConstants.ChanneledHeaderSize + ackIdx / BitsInByte;
ackBit = ackIdx % BitsInByte;
if ((_outgoingAcks.RawData[ackByte] & (1 << ackBit)) != 0)
{
NetDebug.Write("[RR]ReliableInOrder duplicate");
//because _mustSendAcks == true
AddToPeerChannelSendQueue();
return false;
}
//save ack
_outgoingAcks.RawData[ackByte] |= (byte) (1 << ackBit);
}
AddToPeerChannelSendQueue();
//detailed check
if (seq == _remoteSequence)
{
NetDebug.Write("[RR]ReliableInOrder packet succes");
Peer.AddReliablePacket(_deliveryMethod, packet);
_remoteSequence = (_remoteSequence + 1) % NetConstants.MaxSequence;
if (_ordered)
{
NetPacket p;
while ((p = _receivedPackets[_remoteSequence % _windowSize]) != null)
{
//process holden packet
_receivedPackets[_remoteSequence % _windowSize] = null;
Peer.AddReliablePacket(_deliveryMethod, p);
_remoteSequence = (_remoteSequence + 1) % NetConstants.MaxSequence;
}
}
else
{
while (_earlyReceived[_remoteSequence % _windowSize])
{
//process early packet
_earlyReceived[_remoteSequence % _windowSize] = false;
_remoteSequence = (_remoteSequence + 1) % NetConstants.MaxSequence;
}
}
return true;
}
//holden packet
if (_ordered)
{
_receivedPackets[ackIdx] = packet;
}
else
{
_earlyReceived[ackIdx] = true;
Peer.AddReliablePacket(_deliveryMethod, packet);
}
return true;
}
}
}

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using System;
namespace LiteNetLib
{
internal sealed class SequencedChannel : BaseChannel
{
private int _localSequence;
private ushort _remoteSequence;
private readonly bool _reliable;
private NetPacket _lastPacket;
private readonly NetPacket _ackPacket;
private bool _mustSendAck;
private readonly byte _id;
private long _lastPacketSendTime;
public SequencedChannel(NetPeer peer, bool reliable, byte id) : base(peer)
{
_id = id;
_reliable = reliable;
if (_reliable)
_ackPacket = new NetPacket(PacketProperty.Ack, 0) {ChannelId = id};
}
protected override bool SendNextPackets()
{
if (_reliable && OutgoingQueue.Count == 0)
{
long currentTime = DateTime.UtcNow.Ticks;
long packetHoldTime = currentTime - _lastPacketSendTime;
if (packetHoldTime >= Peer.ResendDelay * TimeSpan.TicksPerMillisecond)
{
var packet = _lastPacket;
if (packet != null)
{
_lastPacketSendTime = currentTime;
Peer.SendUserData(packet);
}
}
}
else
{
lock (OutgoingQueue)
{
while (OutgoingQueue.Count > 0)
{
NetPacket packet = OutgoingQueue.Dequeue();
_localSequence = (_localSequence + 1) % NetConstants.MaxSequence;
packet.Sequence = (ushort)_localSequence;
packet.ChannelId = _id;
Peer.SendUserData(packet);
if (_reliable && OutgoingQueue.Count == 0)
{
_lastPacketSendTime = DateTime.UtcNow.Ticks;
_lastPacket = packet;
}
else
{
Peer.NetManager.PoolRecycle(packet);
}
}
}
}
if (_reliable && _mustSendAck)
{
_mustSendAck = false;
_ackPacket.Sequence = _remoteSequence;
Peer.SendUserData(_ackPacket);
}
return _lastPacket != null;
}
public override bool ProcessPacket(NetPacket packet)
{
if (packet.IsFragmented)
return false;
if (packet.Property == PacketProperty.Ack)
{
if (_reliable && _lastPacket != null && packet.Sequence == _lastPacket.Sequence)
_lastPacket = null;
return false;
}
int relative = NetUtils.RelativeSequenceNumber(packet.Sequence, _remoteSequence);
bool packetProcessed = false;
if (packet.Sequence < NetConstants.MaxSequence && relative > 0)
{
if (Peer.NetManager.EnableStatistics)
{
Peer.Statistics.AddPacketLoss(relative - 1);
Peer.NetManager.Statistics.AddPacketLoss(relative - 1);
}
_remoteSequence = packet.Sequence;
Peer.NetManager.CreateReceiveEvent(
packet,
_reliable ? DeliveryMethod.ReliableSequenced : DeliveryMethod.Sequenced,
(byte)(packet.ChannelId / NetConstants.ChannelTypeCount),
NetConstants.ChanneledHeaderSize,
Peer);
packetProcessed = true;
}
if (_reliable)
{
_mustSendAck = true;
AddToPeerChannelSendQueue();
}
return packetProcessed;
}
}
}

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#if NETCOREAPP3_0_OR_GREATER || NETCOREAPP3_1 || NET5_0
using System;
using System.Runtime.InteropServices;
using System.Runtime.Intrinsics.X86;
#endif
#if NET5_0_OR_GREATER || NET5_0
using System.Runtime.Intrinsics.Arm;
#endif
namespace LiteNetLib.Utils
{
//Implementation from Crc32.NET
public static class CRC32C
{
public const int ChecksumSize = 4;
private const uint Poly = 0x82F63B78u;
private static readonly uint[] Table;
static CRC32C()
{
#if NETCOREAPP3_0_OR_GREATER || NETCOREAPP3_1 || NET5_0
if (Sse42.IsSupported)
return;
#endif
#if NET5_0_OR_GREATER || NET5_0
if (Crc32.IsSupported)
return;
#endif
Table = NetUtils.AllocatePinnedUninitializedArray<uint>(16 * 256);
for (uint i = 0; i < 256; i++)
{
uint res = i;
for (int t = 0; t < 16; t++)
{
for (int k = 0; k < 8; k++)
res = (res & 1) == 1 ? Poly ^ (res >> 1) : (res >> 1);
Table[t * 256 + i] = res;
}
}
}
/// <summary>
/// Compute CRC32C for data
/// </summary>
/// <param name="input">input data</param>
/// <param name="offset">offset</param>
/// <param name="length">length</param>
/// <returns>CRC32C checksum</returns>
public static uint Compute(byte[] input, int offset, int length)
{
uint crcLocal = uint.MaxValue;
#if NETCOREAPP3_0_OR_GREATER || NETCOREAPP3_1 || NET5_0
if (Sse42.IsSupported)
{
var data = new ReadOnlySpan<byte>(input, offset, length);
int processed = 0;
if (Sse42.X64.IsSupported && data.Length > sizeof(ulong))
{
processed = data.Length / sizeof(ulong) * sizeof(ulong);
var ulongs = MemoryMarshal.Cast<byte, ulong>(data.Slice(0, processed));
ulong crclong = crcLocal;
for (int i = 0; i < ulongs.Length; i++)
{
crclong = Sse42.X64.Crc32(crclong, ulongs[i]);
}
crcLocal = (uint)crclong;
}
else if (data.Length > sizeof(uint))
{
processed = data.Length / sizeof(uint) * sizeof(uint);
var uints = MemoryMarshal.Cast<byte, uint>(data.Slice(0, processed));
for (int i = 0; i < uints.Length; i++)
{
crcLocal = Sse42.Crc32(crcLocal, uints[i]);
}
}
for (int i = processed; i < data.Length; i++)
{
crcLocal = Sse42.Crc32(crcLocal, data[i]);
}
return crcLocal ^ uint.MaxValue;
}
#endif
#if NET5_0_OR_GREATER || NET5_0
if (Crc32.IsSupported)
{
var data = new ReadOnlySpan<byte>(input, offset, length);
int processed = 0;
if (Crc32.Arm64.IsSupported && data.Length > sizeof(ulong))
{
processed = data.Length / sizeof(ulong) * sizeof(ulong);
var ulongs = MemoryMarshal.Cast<byte, ulong>(data.Slice(0, processed));
for (int i = 0; i < ulongs.Length; i++)
{
crcLocal = Crc32.Arm64.ComputeCrc32C(crcLocal, ulongs[i]);
}
}
else if (data.Length > sizeof(uint))
{
processed = data.Length / sizeof(uint) * sizeof(uint);
var uints = MemoryMarshal.Cast<byte, uint>(data.Slice(0, processed));
for (int i = 0; i < uints.Length; i++)
{
crcLocal = Crc32.ComputeCrc32C(crcLocal, uints[i]);
}
}
for (int i = processed; i < data.Length; i++)
{
crcLocal = Crc32.ComputeCrc32C(crcLocal, data[i]);
}
return crcLocal ^ uint.MaxValue;
}
#endif
while (length >= 16)
{
var a = Table[(3 * 256) + input[offset + 12]]
^ Table[(2 * 256) + input[offset + 13]]
^ Table[(1 * 256) + input[offset + 14]]
^ Table[(0 * 256) + input[offset + 15]];
var b = Table[(7 * 256) + input[offset + 8]]
^ Table[(6 * 256) + input[offset + 9]]
^ Table[(5 * 256) + input[offset + 10]]
^ Table[(4 * 256) + input[offset + 11]];
var c = Table[(11 * 256) + input[offset + 4]]
^ Table[(10 * 256) + input[offset + 5]]
^ Table[(9 * 256) + input[offset + 6]]
^ Table[(8 * 256) + input[offset + 7]];
var d = Table[(15 * 256) + ((byte)crcLocal ^ input[offset])]
^ Table[(14 * 256) + ((byte)(crcLocal >> 8) ^ input[offset + 1])]
^ Table[(13 * 256) + ((byte)(crcLocal >> 16) ^ input[offset + 2])]
^ Table[(12 * 256) + ((crcLocal >> 24) ^ input[offset + 3])];
crcLocal = d ^ c ^ b ^ a;
offset += 16;
length -= 16;
}
while (--length >= 0)
crcLocal = Table[(byte)(crcLocal ^ input[offset++])] ^ crcLocal >> 8;
return crcLocal ^ uint.MaxValue;
}
}
}

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using System;
using System.Runtime.CompilerServices;
using System.Runtime.InteropServices;
namespace LiteNetLib.Utils
{
public static class FastBitConverter
{
#if (LITENETLIB_UNSAFE || LITENETLIB_UNSAFELIB || NETCOREAPP3_1 || NET5_0 || NETCOREAPP3_0_OR_GREATER) && !BIGENDIAN
#if LITENETLIB_UNSAFE
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static unsafe void GetBytes<T>(byte[] bytes, int startIndex, T value) where T : unmanaged
{
int size = sizeof(T);
if (bytes.Length < startIndex + size)
ThrowIndexOutOfRangeException();
#if LITENETLIB_UNSAFELIB || NETCOREAPP3_1 || NET5_0 || NETCOREAPP3_0_OR_GREATER
Unsafe.As<byte, T>(ref bytes[startIndex]) = value;
#else
fixed (byte* ptr = &bytes[startIndex])
{
#if UNITY_ANDROID
// On some android systems, assigning *(T*)ptr throws a NRE if
// the ptr isn't aligned (i.e. if Position is 1,2,3,5, etc.).
// Here we have to use memcpy.
//
// => we can't get a pointer of a struct in C# without
// marshalling allocations
// => instead, we stack allocate an array of type T and use that
// => stackalloc avoids GC and is very fast. it only works for
// value types, but all blittable types are anyway.
T* valueBuffer = stackalloc T[1] { value };
UnsafeUtility.MemCpy(ptr, valueBuffer, size);
#else
*(T*)ptr = value;
#endif
}
#endif
}
#else
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static void GetBytes<T>(byte[] bytes, int startIndex, T value) where T : unmanaged
{
if (bytes.Length < startIndex + Unsafe.SizeOf<T>())
ThrowIndexOutOfRangeException();
Unsafe.As<byte, T>(ref bytes[startIndex]) = value;
}
#endif
private static void ThrowIndexOutOfRangeException() => throw new IndexOutOfRangeException();
#else
[StructLayout(LayoutKind.Explicit)]
private struct ConverterHelperDouble
{
[FieldOffset(0)]
public ulong Along;
[FieldOffset(0)]
public double Adouble;
}
[StructLayout(LayoutKind.Explicit)]
private struct ConverterHelperFloat
{
[FieldOffset(0)]
public int Aint;
[FieldOffset(0)]
public float Afloat;
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
private static void WriteLittleEndian(byte[] buffer, int offset, ulong data)
{
#if BIGENDIAN
buffer[offset + 7] = (byte)(data);
buffer[offset + 6] = (byte)(data >> 8);
buffer[offset + 5] = (byte)(data >> 16);
buffer[offset + 4] = (byte)(data >> 24);
buffer[offset + 3] = (byte)(data >> 32);
buffer[offset + 2] = (byte)(data >> 40);
buffer[offset + 1] = (byte)(data >> 48);
buffer[offset ] = (byte)(data >> 56);
#else
buffer[offset] = (byte)(data);
buffer[offset + 1] = (byte)(data >> 8);
buffer[offset + 2] = (byte)(data >> 16);
buffer[offset + 3] = (byte)(data >> 24);
buffer[offset + 4] = (byte)(data >> 32);
buffer[offset + 5] = (byte)(data >> 40);
buffer[offset + 6] = (byte)(data >> 48);
buffer[offset + 7] = (byte)(data >> 56);
#endif
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
private static void WriteLittleEndian(byte[] buffer, int offset, int data)
{
#if BIGENDIAN
buffer[offset + 3] = (byte)(data);
buffer[offset + 2] = (byte)(data >> 8);
buffer[offset + 1] = (byte)(data >> 16);
buffer[offset ] = (byte)(data >> 24);
#else
buffer[offset] = (byte)(data);
buffer[offset + 1] = (byte)(data >> 8);
buffer[offset + 2] = (byte)(data >> 16);
buffer[offset + 3] = (byte)(data >> 24);
#endif
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static void WriteLittleEndian(byte[] buffer, int offset, short data)
{
#if BIGENDIAN
buffer[offset + 1] = (byte)(data);
buffer[offset ] = (byte)(data >> 8);
#else
buffer[offset] = (byte)(data);
buffer[offset + 1] = (byte)(data >> 8);
#endif
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static void GetBytes(byte[] bytes, int startIndex, double value)
{
ConverterHelperDouble ch = new ConverterHelperDouble { Adouble = value };
WriteLittleEndian(bytes, startIndex, ch.Along);
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static void GetBytes(byte[] bytes, int startIndex, float value)
{
ConverterHelperFloat ch = new ConverterHelperFloat { Afloat = value };
WriteLittleEndian(bytes, startIndex, ch.Aint);
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static void GetBytes(byte[] bytes, int startIndex, short value)
{
WriteLittleEndian(bytes, startIndex, value);
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static void GetBytes(byte[] bytes, int startIndex, ushort value)
{
WriteLittleEndian(bytes, startIndex, (short)value);
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static void GetBytes(byte[] bytes, int startIndex, int value)
{
WriteLittleEndian(bytes, startIndex, value);
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static void GetBytes(byte[] bytes, int startIndex, uint value)
{
WriteLittleEndian(bytes, startIndex, (int)value);
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static void GetBytes(byte[] bytes, int startIndex, long value)
{
WriteLittleEndian(bytes, startIndex, (ulong)value);
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static void GetBytes(byte[] bytes, int startIndex, ulong value)
{
WriteLittleEndian(bytes, startIndex, value);
}
#endif
}
}

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fileFormatVersion: 2
guid: 62e022071d6c4284986276c32b92b32c
MonoImporter:
externalObjects: {}
serializedVersion: 2
defaultReferences: []
executionOrder: 0
icon: {instanceID: 0}
userData:
assetBundleName:
assetBundleVariant:

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namespace LiteNetLib.Utils
{
public interface INetSerializable
{
void Serialize(NetDataWriter writer);
void Deserialize(NetDataReader reader);
}
}

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fileFormatVersion: 2
guid: 819c3f8d629972f49bdf77b1fc3d1c2e
MonoImporter:
externalObjects: {}
serializedVersion: 2
defaultReferences: []
executionOrder: 0
icon: {instanceID: 0}
userData:
assetBundleName:
assetBundleVariant:

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using System;
using System.Net;
using System.Runtime.CompilerServices;
namespace LiteNetLib.Utils
{
public class NetDataReader
{
protected byte[] _data;
protected int _position;
protected int _dataSize;
private int _offset;
public byte[] RawData
{
[MethodImpl(MethodImplOptions.AggressiveInlining)]
get => _data;
}
public int RawDataSize
{
[MethodImpl(MethodImplOptions.AggressiveInlining)]
get => _dataSize;
}
public int UserDataOffset
{
[MethodImpl(MethodImplOptions.AggressiveInlining)]
get => _offset;
}
public int UserDataSize
{
[MethodImpl(MethodImplOptions.AggressiveInlining)]
get => _dataSize - _offset;
}
public bool IsNull
{
[MethodImpl(MethodImplOptions.AggressiveInlining)]
get => _data == null;
}
public int Position
{
[MethodImpl(MethodImplOptions.AggressiveInlining)]
get => _position;
}
public bool EndOfData
{
[MethodImpl(MethodImplOptions.AggressiveInlining)]
get => _position == _dataSize;
}
public int AvailableBytes
{
[MethodImpl(MethodImplOptions.AggressiveInlining)]
get => _dataSize - _position;
}
public void SkipBytes(int count)
{
_position += count;
}
public void SetPosition(int position)
{
_position = position;
}
public void SetSource(NetDataWriter dataWriter)
{
_data = dataWriter.Data;
_position = 0;
_offset = 0;
_dataSize = dataWriter.Length;
}
public void SetSource(byte[] source)
{
_data = source;
_position = 0;
_offset = 0;
_dataSize = source.Length;
}
public void SetSource(byte[] source, int offset, int maxSize)
{
_data = source;
_position = offset;
_offset = offset;
_dataSize = maxSize;
}
public NetDataReader()
{
}
public NetDataReader(NetDataWriter writer)
{
SetSource(writer);
}
public NetDataReader(byte[] source)
{
SetSource(source);
}
public NetDataReader(byte[] source, int offset, int maxSize)
{
SetSource(source, offset, maxSize);
}
#region GetMethods
public IPEndPoint GetNetEndPoint()
{
string host = GetString(1000);
int port = GetInt();
return NetUtils.MakeEndPoint(host, port);
}
public byte GetByte()
{
byte res = _data[_position];
_position++;
return res;
}
public sbyte GetSByte()
{
return (sbyte)GetByte();
}
public T[] GetArray<T>(ushort size)
{
ushort length = BitConverter.ToUInt16(_data, _position);
_position += 2;
T[] result = new T[length];
length *= size;
Buffer.BlockCopy(_data, _position, result, 0, length);
_position += length;
return result;
}
public bool[] GetBoolArray()
{
return GetArray<bool>(1);
}
public ushort[] GetUShortArray()
{
return GetArray<ushort>(2);
}
public short[] GetShortArray()
{
return GetArray<short>(2);
}
public int[] GetIntArray()
{
return GetArray<int>(4);
}
public uint[] GetUIntArray()
{
return GetArray<uint>(4);
}
public float[] GetFloatArray()
{
return GetArray<float>(4);
}
public double[] GetDoubleArray()
{
return GetArray<double>(8);
}
public long[] GetLongArray()
{
return GetArray<long>(8);
}
public ulong[] GetULongArray()
{
return GetArray<ulong>(8);
}
public string[] GetStringArray()
{
ushort length = GetUShort();
string[] arr = new string[length];
for (int i = 0; i < length; i++)
{
arr[i] = GetString();
}
return arr;
}
/// <summary>
/// Note that "maxStringLength" only limits the number of characters in a string, not its size in bytes.
/// Strings that exceed this parameter are returned as empty
/// </summary>
public string[] GetStringArray(int maxStringLength)
{
ushort length = GetUShort();
string[] arr = new string[length];
for (int i = 0; i < length; i++)
{
arr[i] = GetString(maxStringLength);
}
return arr;
}
public bool GetBool()
{
return GetByte() == 1;
}
public char GetChar()
{
return (char)GetUShort();
}
public ushort GetUShort()
{
ushort result = BitConverter.ToUInt16(_data, _position);
_position += 2;
return result;
}
public short GetShort()
{
short result = BitConverter.ToInt16(_data, _position);
_position += 2;
return result;
}
public long GetLong()
{
long result = BitConverter.ToInt64(_data, _position);
_position += 8;
return result;
}
public ulong GetULong()
{
ulong result = BitConverter.ToUInt64(_data, _position);
_position += 8;
return result;
}
public int GetInt()
{
int result = BitConverter.ToInt32(_data, _position);
_position += 4;
return result;
}
public uint GetUInt()
{
uint result = BitConverter.ToUInt32(_data, _position);
_position += 4;
return result;
}
public float GetFloat()
{
float result = BitConverter.ToSingle(_data, _position);
_position += 4;
return result;
}
public double GetDouble()
{
double result = BitConverter.ToDouble(_data, _position);
_position += 8;
return result;
}
/// <summary>
/// Note that "maxLength" only limits the number of characters in a string, not its size in bytes.
/// </summary>
/// <returns>"string.Empty" if value > "maxLength"</returns>
public string GetString(int maxLength)
{
ushort size = GetUShort();
if (size == 0)
{
return string.Empty;
}
int actualSize = size - 1;
if (actualSize >= NetDataWriter.StringBufferMaxLength)
{
return null;
}
ArraySegment<byte> data = GetBytesSegment(actualSize);
return (maxLength > 0 && NetDataWriter.uTF8Encoding.Value.GetCharCount(data.Array, data.Offset, data.Count) > maxLength) ?
string.Empty :
NetDataWriter.uTF8Encoding.Value.GetString(data.Array, data.Offset, data.Count);
}
public string GetString()
{
ushort size = GetUShort();
if (size == 0)
{
return string.Empty;
}
int actualSize = size - 1;
if (actualSize >= NetDataWriter.StringBufferMaxLength)
{
return null;
}
ArraySegment<byte> data = GetBytesSegment(actualSize);
return NetDataWriter.uTF8Encoding.Value.GetString(data.Array, data.Offset, data.Count);
}
public ArraySegment<byte> GetBytesSegment(int count)
{
ArraySegment<byte> segment = new ArraySegment<byte>(_data, _position, count);
_position += count;
return segment;
}
public ArraySegment<byte> GetRemainingBytesSegment()
{
ArraySegment<byte> segment = new ArraySegment<byte>(_data, _position, AvailableBytes);
_position = _data.Length;
return segment;
}
public T Get<T>() where T : struct, INetSerializable
{
var obj = default(T);
obj.Deserialize(this);
return obj;
}
public T Get<T>(Func<T> constructor) where T : class, INetSerializable
{
var obj = constructor();
obj.Deserialize(this);
return obj;
}
public byte[] GetRemainingBytes()
{
byte[] outgoingData = new byte[AvailableBytes];
Buffer.BlockCopy(_data, _position, outgoingData, 0, AvailableBytes);
_position = _data.Length;
return outgoingData;
}
public void GetBytes(byte[] destination, int start, int count)
{
Buffer.BlockCopy(_data, _position, destination, start, count);
_position += count;
}
public void GetBytes(byte[] destination, int count)
{
Buffer.BlockCopy(_data, _position, destination, 0, count);
_position += count;
}
public sbyte[] GetSBytesWithLength()
{
return GetArray<sbyte>(1);
}
public byte[] GetBytesWithLength()
{
return GetArray<byte>(1);
}
#endregion
#region PeekMethods
public byte PeekByte()
{
return _data[_position];
}
public sbyte PeekSByte()
{
return (sbyte)_data[_position];
}
public bool PeekBool()
{
return _data[_position] == 1;
}
public char PeekChar()
{
return (char)PeekUShort();
}
public ushort PeekUShort()
{
return BitConverter.ToUInt16(_data, _position);
}
public short PeekShort()
{
return BitConverter.ToInt16(_data, _position);
}
public long PeekLong()
{
return BitConverter.ToInt64(_data, _position);
}
public ulong PeekULong()
{
return BitConverter.ToUInt64(_data, _position);
}
public int PeekInt()
{
return BitConverter.ToInt32(_data, _position);
}
public uint PeekUInt()
{
return BitConverter.ToUInt32(_data, _position);
}
public float PeekFloat()
{
return BitConverter.ToSingle(_data, _position);
}
public double PeekDouble()
{
return BitConverter.ToDouble(_data, _position);
}
/// <summary>
/// Note that "maxLength" only limits the number of characters in a string, not its size in bytes.
/// </summary>
public string PeekString(int maxLength)
{
ushort size = PeekUShort();
if (size == 0)
{
return string.Empty;
}
int actualSize = size - 1;
if (actualSize >= NetDataWriter.StringBufferMaxLength)
{
return null;
}
return (maxLength > 0 && NetDataWriter.uTF8Encoding.Value.GetCharCount(_data, _position + 2, actualSize) > maxLength) ?
string.Empty :
NetDataWriter.uTF8Encoding.Value.GetString(_data, _position + 2, actualSize);
}
public string PeekString()
{
ushort size = PeekUShort();
if (size == 0)
{
return string.Empty;
}
int actualSize = size - 1;
if (actualSize >= NetDataWriter.StringBufferMaxLength)
{
return null;
}
return NetDataWriter.uTF8Encoding.Value.GetString(_data, _position + 2, actualSize);
}
#endregion
#region TryGetMethods
public bool TryGetByte(out byte result)
{
if (AvailableBytes >= 1)
{
result = GetByte();
return true;
}
result = 0;
return false;
}
public bool TryGetSByte(out sbyte result)
{
if (AvailableBytes >= 1)
{
result = GetSByte();
return true;
}
result = 0;
return false;
}
public bool TryGetBool(out bool result)
{
if (AvailableBytes >= 1)
{
result = GetBool();
return true;
}
result = false;
return false;
}
public bool TryGetChar(out char result)
{
if (!TryGetUShort(out ushort uShortValue))
{
result = '\0';
return false;
}
result = (char)uShortValue;
return true;
}
public bool TryGetShort(out short result)
{
if (AvailableBytes >= 2)
{
result = GetShort();
return true;
}
result = 0;
return false;
}
public bool TryGetUShort(out ushort result)
{
if (AvailableBytes >= 2)
{
result = GetUShort();
return true;
}
result = 0;
return false;
}
public bool TryGetInt(out int result)
{
if (AvailableBytes >= 4)
{
result = GetInt();
return true;
}
result = 0;
return false;
}
public bool TryGetUInt(out uint result)
{
if (AvailableBytes >= 4)
{
result = GetUInt();
return true;
}
result = 0;
return false;
}
public bool TryGetLong(out long result)
{
if (AvailableBytes >= 8)
{
result = GetLong();
return true;
}
result = 0;
return false;
}
public bool TryGetULong(out ulong result)
{
if (AvailableBytes >= 8)
{
result = GetULong();
return true;
}
result = 0;
return false;
}
public bool TryGetFloat(out float result)
{
if (AvailableBytes >= 4)
{
result = GetFloat();
return true;
}
result = 0;
return false;
}
public bool TryGetDouble(out double result)
{
if (AvailableBytes >= 8)
{
result = GetDouble();
return true;
}
result = 0;
return false;
}
public bool TryGetString(out string result)
{
if (AvailableBytes >= 2)
{
ushort strSize = PeekUShort();
if (AvailableBytes >= strSize + 1)
{
result = GetString();
return true;
}
}
result = null;
return false;
}
public bool TryGetStringArray(out string[] result)
{
if (!TryGetUShort(out ushort strArrayLength)) {
result = null;
return false;
}
result = new string[strArrayLength];
for (int i = 0; i < strArrayLength; i++)
{
if (!TryGetString(out result[i]))
{
result = null;
return false;
}
}
return true;
}
public bool TryGetBytesWithLength(out byte[] result)
{
if (AvailableBytes >= 2)
{
ushort length = PeekUShort();
if (length >= 0 && AvailableBytes >= 2 + length)
{
result = GetBytesWithLength();
return true;
}
}
result = null;
return false;
}
#endregion
public void Clear()
{
_position = 0;
_dataSize = 0;
_data = null;
}
}
}

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fileFormatVersion: 2
guid: 40f1663f22634e9499bb37bbe6a10992
MonoImporter:
externalObjects: {}
serializedVersion: 2
defaultReferences: []
executionOrder: 0
icon: {instanceID: 0}
userData:
assetBundleName:
assetBundleVariant:

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using System;
using System.Net;
using System.Runtime.CompilerServices;
using System.Text;
using System.Threading;
namespace LiteNetLib.Utils
{
public class NetDataWriter
{
protected byte[] _data;
protected int _position;
private const int InitialSize = 64;
private readonly bool _autoResize;
public int Capacity
{
[MethodImpl(MethodImplOptions.AggressiveInlining)]
get => _data.Length;
}
public byte[] Data
{
[MethodImpl(MethodImplOptions.AggressiveInlining)]
get => _data;
}
public int Length
{
[MethodImpl(MethodImplOptions.AggressiveInlining)]
get => _position;
}
public static readonly ThreadLocal<UTF8Encoding> uTF8Encoding = new ThreadLocal<UTF8Encoding>(() => new UTF8Encoding(false, true));
public const int StringBufferMaxLength = 65535;
private readonly byte[] _stringBuffer = new byte[StringBufferMaxLength];
public NetDataWriter() : this(true, InitialSize)
{
}
public NetDataWriter(bool autoResize) : this(autoResize, InitialSize)
{
}
public NetDataWriter(bool autoResize, int initialSize)
{
_data = new byte[initialSize];
_autoResize = autoResize;
}
/// <summary>
/// Creates NetDataWriter from existing ByteArray
/// </summary>
/// <param name="bytes">Source byte array</param>
/// <param name="copy">Copy array to new location or use existing</param>
public static NetDataWriter FromBytes(byte[] bytes, bool copy)
{
if (copy)
{
var netDataWriter = new NetDataWriter(true, bytes.Length);
netDataWriter.Put(bytes);
return netDataWriter;
}
return new NetDataWriter(true, 0) {_data = bytes, _position = bytes.Length};
}
/// <summary>
/// Creates NetDataWriter from existing ByteArray (always copied data)
/// </summary>
/// <param name="bytes">Source byte array</param>
/// <param name="offset">Offset of array</param>
/// <param name="length">Length of array</param>
public static NetDataWriter FromBytes(byte[] bytes, int offset, int length)
{
var netDataWriter = new NetDataWriter(true, bytes.Length);
netDataWriter.Put(bytes, offset, length);
return netDataWriter;
}
public static NetDataWriter FromString(string value)
{
var netDataWriter = new NetDataWriter();
netDataWriter.Put(value);
return netDataWriter;
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public void ResizeIfNeed(int newSize)
{
if (_data.Length < newSize)
{
Array.Resize(ref _data, Math.Max(newSize, _data.Length * 2));
}
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public void EnsureFit(int additionalSize)
{
if (_data.Length < _position + additionalSize)
{
Array.Resize(ref _data, Math.Max(_position + additionalSize, _data.Length * 2));
}
}
public void Reset(int size)
{
ResizeIfNeed(size);
_position = 0;
}
public void Reset()
{
_position = 0;
}
public byte[] CopyData()
{
byte[] resultData = new byte[_position];
Buffer.BlockCopy(_data, 0, resultData, 0, _position);
return resultData;
}
/// <summary>
/// Sets position of NetDataWriter to rewrite previous values
/// </summary>
/// <param name="position">new byte position</param>
/// <returns>previous position of data writer</returns>
public int SetPosition(int position)
{
int prevPosition = _position;
_position = position;
return prevPosition;
}
public void Put(float value)
{
if (_autoResize)
ResizeIfNeed(_position + 4);
FastBitConverter.GetBytes(_data, _position, value);
_position += 4;
}
public void Put(double value)
{
if (_autoResize)
ResizeIfNeed(_position + 8);
FastBitConverter.GetBytes(_data, _position, value);
_position += 8;
}
public void Put(long value)
{
if (_autoResize)
ResizeIfNeed(_position + 8);
FastBitConverter.GetBytes(_data, _position, value);
_position += 8;
}
public void Put(ulong value)
{
if (_autoResize)
ResizeIfNeed(_position + 8);
FastBitConverter.GetBytes(_data, _position, value);
_position += 8;
}
public void Put(int value)
{
if (_autoResize)
ResizeIfNeed(_position + 4);
FastBitConverter.GetBytes(_data, _position, value);
_position += 4;
}
public void Put(uint value)
{
if (_autoResize)
ResizeIfNeed(_position + 4);
FastBitConverter.GetBytes(_data, _position, value);
_position += 4;
}
public void Put(char value)
{
Put((ushort)value);
}
public void Put(ushort value)
{
if (_autoResize)
ResizeIfNeed(_position + 2);
FastBitConverter.GetBytes(_data, _position, value);
_position += 2;
}
public void Put(short value)
{
if (_autoResize)
ResizeIfNeed(_position + 2);
FastBitConverter.GetBytes(_data, _position, value);
_position += 2;
}
public void Put(sbyte value)
{
if (_autoResize)
ResizeIfNeed(_position + 1);
_data[_position] = (byte)value;
_position++;
}
public void Put(byte value)
{
if (_autoResize)
ResizeIfNeed(_position + 1);
_data[_position] = value;
_position++;
}
public void Put(byte[] data, int offset, int length)
{
if (_autoResize)
ResizeIfNeed(_position + length);
Buffer.BlockCopy(data, offset, _data, _position, length);
_position += length;
}
public void Put(byte[] data)
{
if (_autoResize)
ResizeIfNeed(_position + data.Length);
Buffer.BlockCopy(data, 0, _data, _position, data.Length);
_position += data.Length;
}
public void PutSBytesWithLength(sbyte[] data, int offset, ushort length)
{
if (_autoResize)
ResizeIfNeed(_position + 2 + length);
FastBitConverter.GetBytes(_data, _position, length);
Buffer.BlockCopy(data, offset, _data, _position + 2, length);
_position += 2 + length;
}
public void PutSBytesWithLength(sbyte[] data)
{
PutArray(data, 1);
}
public void PutBytesWithLength(byte[] data, int offset, ushort length)
{
if (_autoResize)
ResizeIfNeed(_position + 2 + length);
FastBitConverter.GetBytes(_data, _position, length);
Buffer.BlockCopy(data, offset, _data, _position + 2, length);
_position += 2 + length;
}
public void PutBytesWithLength(byte[] data)
{
PutArray(data, 1);
}
public void Put(bool value)
{
Put((byte)(value ? 1 : 0));
}
public void PutArray(Array arr, int sz)
{
ushort length = arr == null ? (ushort) 0 : (ushort)arr.Length;
sz *= length;
if (_autoResize)
ResizeIfNeed(_position + sz + 2);
FastBitConverter.GetBytes(_data, _position, length);
if (arr != null)
Buffer.BlockCopy(arr, 0, _data, _position + 2, sz);
_position += sz + 2;
}
public void PutArray(float[] value)
{
PutArray(value, 4);
}
public void PutArray(double[] value)
{
PutArray(value, 8);
}
public void PutArray(long[] value)
{
PutArray(value, 8);
}
public void PutArray(ulong[] value)
{
PutArray(value, 8);
}
public void PutArray(int[] value)
{
PutArray(value, 4);
}
public void PutArray(uint[] value)
{
PutArray(value, 4);
}
public void PutArray(ushort[] value)
{
PutArray(value, 2);
}
public void PutArray(short[] value)
{
PutArray(value, 2);
}
public void PutArray(bool[] value)
{
PutArray(value, 1);
}
public void PutArray(string[] value)
{
ushort strArrayLength = value == null ? (ushort)0 : (ushort)value.Length;
Put(strArrayLength);
for (int i = 0; i < strArrayLength; i++)
Put(value[i]);
}
public void PutArray(string[] value, int strMaxLength)
{
ushort strArrayLength = value == null ? (ushort)0 : (ushort)value.Length;
Put(strArrayLength);
for (int i = 0; i < strArrayLength; i++)
Put(value[i], strMaxLength);
}
public void Put(IPEndPoint endPoint)
{
Put(endPoint.Address.ToString());
Put(endPoint.Port);
}
public void Put(string value)
{
Put(value, 0);
}
/// <summary>
/// Note that "maxLength" only limits the number of characters in a string, not its size in bytes.
/// </summary>
public void Put(string value, int maxLength)
{
if (string.IsNullOrEmpty(value))
{
Put((ushort)0);
return;
}
int length = maxLength > 0 && value.Length > maxLength ? maxLength : value.Length;
int size = uTF8Encoding.Value.GetBytes(value, 0, length, _stringBuffer, 0);
if (size == 0 || size >= StringBufferMaxLength)
{
Put((ushort)0);
return;
}
Put(checked((ushort)(size + 1)));
Put(_stringBuffer, 0, size);
}
public void Put<T>(T obj) where T : INetSerializable
{
obj.Serialize(this);
}
}
}

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fileFormatVersion: 2
guid: 1a7c2666c073f0241ba672f218278a4d
MonoImporter:
externalObjects: {}
serializedVersion: 2
defaultReferences: []
executionOrder: 0
icon: {instanceID: 0}
userData:
assetBundleName:
assetBundleVariant:

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using System;
using System.Collections.Generic;
namespace LiteNetLib.Utils
{
public class NetPacketProcessor
{
private static class HashCache<T>
{
public static readonly ulong Id;
//FNV-1 64 bit hash
static HashCache()
{
ulong hash = 14695981039346656037UL; //offset
string typeName = typeof(T).ToString();
for (var i = 0; i < typeName.Length; i++)
{
hash ^= typeName[i];
hash *= 1099511628211UL; //prime
}
Id = hash;
}
}
protected delegate void SubscribeDelegate(NetDataReader reader, object userData);
private readonly NetSerializer _netSerializer;
private readonly Dictionary<ulong, SubscribeDelegate> _callbacks = new Dictionary<ulong, SubscribeDelegate>();
public NetPacketProcessor()
{
_netSerializer = new NetSerializer();
}
public NetPacketProcessor(int maxStringLength)
{
_netSerializer = new NetSerializer(maxStringLength);
}
protected virtual ulong GetHash<T>()
{
return HashCache<T>.Id;
}
protected virtual SubscribeDelegate GetCallbackFromData(NetDataReader reader)
{
ulong hash = reader.GetULong();
if (!_callbacks.TryGetValue(hash, out var action))
{
throw new ParseException("Undefined packet in NetDataReader");
}
return action;
}
protected virtual void WriteHash<T>(NetDataWriter writer)
{
writer.Put(GetHash<T>());
}
/// <summary>
/// Register nested property type
/// </summary>
/// <typeparam name="T">INetSerializable structure</typeparam>
public void RegisterNestedType<T>() where T : struct, INetSerializable
{
_netSerializer.RegisterNestedType<T>();
}
/// <summary>
/// Register nested property type
/// </summary>
/// <param name="writeDelegate"></param>
/// <param name="readDelegate"></param>
public void RegisterNestedType<T>(Action<NetDataWriter, T> writeDelegate, Func<NetDataReader, T> readDelegate)
{
_netSerializer.RegisterNestedType<T>(writeDelegate, readDelegate);
}
/// <summary>
/// Register nested property type
/// </summary>
/// <typeparam name="T">INetSerializable class</typeparam>
public void RegisterNestedType<T>(Func<T> constructor) where T : class, INetSerializable
{
_netSerializer.RegisterNestedType(constructor);
}
/// <summary>
/// Reads all available data from NetDataReader and calls OnReceive delegates
/// </summary>
/// <param name="reader">NetDataReader with packets data</param>
public void ReadAllPackets(NetDataReader reader)
{
while (reader.AvailableBytes > 0)
ReadPacket(reader);
}
/// <summary>
/// Reads all available data from NetDataReader and calls OnReceive delegates
/// </summary>
/// <param name="reader">NetDataReader with packets data</param>
/// <param name="userData">Argument that passed to OnReceivedEvent</param>
/// <exception cref="ParseException">Malformed packet</exception>
public void ReadAllPackets(NetDataReader reader, object userData)
{
while (reader.AvailableBytes > 0)
ReadPacket(reader, userData);
}
/// <summary>
/// Reads one packet from NetDataReader and calls OnReceive delegate
/// </summary>
/// <param name="reader">NetDataReader with packet</param>
/// <exception cref="ParseException">Malformed packet</exception>
public void ReadPacket(NetDataReader reader)
{
ReadPacket(reader, null);
}
public void Write<T>(NetDataWriter writer, T packet) where T : class, new()
{
WriteHash<T>(writer);
_netSerializer.Serialize(writer, packet);
}
public void WriteNetSerializable<T>(NetDataWriter writer, ref T packet) where T : INetSerializable
{
WriteHash<T>(writer);
packet.Serialize(writer);
}
/// <summary>
/// Reads one packet from NetDataReader and calls OnReceive delegate
/// </summary>
/// <param name="reader">NetDataReader with packet</param>
/// <param name="userData">Argument that passed to OnReceivedEvent</param>
/// <exception cref="ParseException">Malformed packet</exception>
public void ReadPacket(NetDataReader reader, object userData)
{
GetCallbackFromData(reader)(reader, userData);
}
/// <summary>
/// Register and subscribe to packet receive event
/// </summary>
/// <param name="onReceive">event that will be called when packet deserialized with ReadPacket method</param>
/// <param name="packetConstructor">Method that constructs packet instead of slow Activator.CreateInstance</param>
/// <exception cref="InvalidTypeException"><typeparamref name="T"/>'s fields are not supported, or it has no fields</exception>
public void Subscribe<T>(Action<T> onReceive, Func<T> packetConstructor) where T : class, new()
{
_netSerializer.Register<T>();
_callbacks[GetHash<T>()] = (reader, userData) =>
{
var reference = packetConstructor();
_netSerializer.Deserialize(reader, reference);
onReceive(reference);
};
}
/// <summary>
/// Register and subscribe to packet receive event (with userData)
/// </summary>
/// <param name="onReceive">event that will be called when packet deserialized with ReadPacket method</param>
/// <param name="packetConstructor">Method that constructs packet instead of slow Activator.CreateInstance</param>
/// <exception cref="InvalidTypeException"><typeparamref name="T"/>'s fields are not supported, or it has no fields</exception>
public void Subscribe<T, TUserData>(Action<T, TUserData> onReceive, Func<T> packetConstructor) where T : class, new()
{
_netSerializer.Register<T>();
_callbacks[GetHash<T>()] = (reader, userData) =>
{
var reference = packetConstructor();
_netSerializer.Deserialize(reader, reference);
onReceive(reference, (TUserData)userData);
};
}
/// <summary>
/// Register and subscribe to packet receive event
/// This method will overwrite last received packet class on receive (less garbage)
/// </summary>
/// <param name="onReceive">event that will be called when packet deserialized with ReadPacket method</param>
/// <exception cref="InvalidTypeException"><typeparamref name="T"/>'s fields are not supported, or it has no fields</exception>
public void SubscribeReusable<T>(Action<T> onReceive) where T : class, new()
{
_netSerializer.Register<T>();
var reference = new T();
_callbacks[GetHash<T>()] = (reader, userData) =>
{
_netSerializer.Deserialize(reader, reference);
onReceive(reference);
};
}
/// <summary>
/// Register and subscribe to packet receive event
/// This method will overwrite last received packet class on receive (less garbage)
/// </summary>
/// <param name="onReceive">event that will be called when packet deserialized with ReadPacket method</param>
/// <exception cref="InvalidTypeException"><typeparamref name="T"/>'s fields are not supported, or it has no fields</exception>
public void SubscribeReusable<T, TUserData>(Action<T, TUserData> onReceive) where T : class, new()
{
_netSerializer.Register<T>();
var reference = new T();
_callbacks[GetHash<T>()] = (reader, userData) =>
{
_netSerializer.Deserialize(reader, reference);
onReceive(reference, (TUserData)userData);
};
}
public void SubscribeNetSerializable<T, TUserData>(
Action<T, TUserData> onReceive,
Func<T> packetConstructor) where T : INetSerializable
{
_callbacks[GetHash<T>()] = (reader, userData) =>
{
var pkt = packetConstructor();
pkt.Deserialize(reader);
onReceive(pkt, (TUserData)userData);
};
}
public void SubscribeNetSerializable<T>(
Action<T> onReceive,
Func<T> packetConstructor) where T : INetSerializable
{
_callbacks[GetHash<T>()] = (reader, userData) =>
{
var pkt = packetConstructor();
pkt.Deserialize(reader);
onReceive(pkt);
};
}
public void SubscribeNetSerializable<T, TUserData>(
Action<T, TUserData> onReceive) where T : INetSerializable, new()
{
var reference = new T();
_callbacks[GetHash<T>()] = (reader, userData) =>
{
reference.Deserialize(reader);
onReceive(reference, (TUserData)userData);
};
}
public void SubscribeNetSerializable<T>(
Action<T> onReceive) where T : INetSerializable, new()
{
var reference = new T();
_callbacks[GetHash<T>()] = (reader, userData) =>
{
reference.Deserialize(reader);
onReceive(reference);
};
}
/// <summary>
/// Remove any subscriptions by type
/// </summary>
/// <typeparam name="T">Packet type</typeparam>
/// <returns>true if remove is success</returns>
public bool RemoveSubscription<T>()
{
return _callbacks.Remove(GetHash<T>());
}
}
}

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fileFormatVersion: 2
guid: 31df8ab0b770a5149a8ba538a6d16989
MonoImporter:
externalObjects: {}
serializedVersion: 2
defaultReferences: []
executionOrder: 0
icon: {instanceID: 0}
userData:
assetBundleName:
assetBundleVariant:

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using System;
using System.Reflection;
using System.Collections.Generic;
using System.Net;
using System.Runtime.Serialization;
namespace LiteNetLib.Utils
{
public class InvalidTypeException : ArgumentException
{
public InvalidTypeException(string message) : base(message) { }
}
public class ParseException : Exception
{
public ParseException(string message) : base(message) { }
}
public class NetSerializer
{
private enum CallType
{
Basic,
Array,
List
}
private abstract class FastCall<T>
{
public CallType Type;
public virtual void Init(MethodInfo getMethod, MethodInfo setMethod, CallType type) { Type = type; }
public abstract void Read(T inf, NetDataReader r);
public abstract void Write(T inf, NetDataWriter w);
public abstract void ReadArray(T inf, NetDataReader r);
public abstract void WriteArray(T inf, NetDataWriter w);
public abstract void ReadList(T inf, NetDataReader r);
public abstract void WriteList(T inf, NetDataWriter w);
}
private abstract class FastCallSpecific<TClass, TProperty> : FastCall<TClass>
{
protected Func<TClass, TProperty> Getter;
protected Action<TClass, TProperty> Setter;
protected Func<TClass, TProperty[]> GetterArr;
protected Action<TClass, TProperty[]> SetterArr;
protected Func<TClass, List<TProperty>> GetterList;
protected Action<TClass, List<TProperty>> SetterList;
public override void ReadArray(TClass inf, NetDataReader r) { throw new InvalidTypeException("Unsupported type: " + typeof(TProperty) + "[]"); }
public override void WriteArray(TClass inf, NetDataWriter w) { throw new InvalidTypeException("Unsupported type: " + typeof(TProperty) + "[]"); }
public override void ReadList(TClass inf, NetDataReader r) { throw new InvalidTypeException("Unsupported type: List<" + typeof(TProperty) + ">"); }
public override void WriteList(TClass inf, NetDataWriter w) { throw new InvalidTypeException("Unsupported type: List<" + typeof(TProperty) + ">"); }
protected TProperty[] ReadArrayHelper(TClass inf, NetDataReader r)
{
ushort count = r.GetUShort();
var arr = GetterArr(inf);
arr = arr == null || arr.Length != count ? new TProperty[count] : arr;
SetterArr(inf, arr);
return arr;
}
protected TProperty[] WriteArrayHelper(TClass inf, NetDataWriter w)
{
var arr = GetterArr(inf);
w.Put((ushort)arr.Length);
return arr;
}
protected List<TProperty> ReadListHelper(TClass inf, NetDataReader r, out int len)
{
len = r.GetUShort();
var list = GetterList(inf);
if (list == null)
{
list = new List<TProperty>(len);
SetterList(inf, list);
}
return list;
}
protected List<TProperty> WriteListHelper(TClass inf, NetDataWriter w, out int len)
{
var list = GetterList(inf);
if (list == null)
{
len = 0;
w.Put(0);
return null;
}
len = list.Count;
w.Put((ushort)len);
return list;
}
public override void Init(MethodInfo getMethod, MethodInfo setMethod, CallType type)
{
base.Init(getMethod, setMethod, type);
switch (type)
{
case CallType.Array:
GetterArr = (Func<TClass, TProperty[]>)Delegate.CreateDelegate(typeof(Func<TClass, TProperty[]>), getMethod);
SetterArr = (Action<TClass, TProperty[]>)Delegate.CreateDelegate(typeof(Action<TClass, TProperty[]>), setMethod);
break;
case CallType.List:
GetterList = (Func<TClass, List<TProperty>>)Delegate.CreateDelegate(typeof(Func<TClass, List<TProperty>>), getMethod);
SetterList = (Action<TClass, List<TProperty>>)Delegate.CreateDelegate(typeof(Action<TClass, List<TProperty>>), setMethod);
break;
default:
Getter = (Func<TClass, TProperty>)Delegate.CreateDelegate(typeof(Func<TClass, TProperty>), getMethod);
Setter = (Action<TClass, TProperty>)Delegate.CreateDelegate(typeof(Action<TClass, TProperty>), setMethod);
break;
}
}
}
private abstract class FastCallSpecificAuto<TClass, TProperty> : FastCallSpecific<TClass, TProperty>
{
protected abstract void ElementRead(NetDataReader r, out TProperty prop);
protected abstract void ElementWrite(NetDataWriter w, ref TProperty prop);
public override void Read(TClass inf, NetDataReader r)
{
ElementRead(r, out var elem);
Setter(inf, elem);
}
public override void Write(TClass inf, NetDataWriter w)
{
var elem = Getter(inf);
ElementWrite(w, ref elem);
}
public override void ReadArray(TClass inf, NetDataReader r)
{
var arr = ReadArrayHelper(inf, r);
for (int i = 0; i < arr.Length; i++)
ElementRead(r, out arr[i]);
}
public override void WriteArray(TClass inf, NetDataWriter w)
{
var arr = WriteArrayHelper(inf, w);
for (int i = 0; i < arr.Length; i++)
ElementWrite(w, ref arr[i]);
}
}
private sealed class FastCallStatic<TClass, TProperty> : FastCallSpecific<TClass, TProperty>
{
private readonly Action<NetDataWriter, TProperty> _writer;
private readonly Func<NetDataReader, TProperty> _reader;
public FastCallStatic(Action<NetDataWriter, TProperty> write, Func<NetDataReader, TProperty> read)
{
_writer = write;
_reader = read;
}
public override void Read(TClass inf, NetDataReader r) { Setter(inf, _reader(r)); }
public override void Write(TClass inf, NetDataWriter w) { _writer(w, Getter(inf)); }
public override void ReadList(TClass inf, NetDataReader r)
{
var list = ReadListHelper(inf, r, out int len);
int listCount = list.Count;
for (int i = 0; i < len; i++)
{
if (i < listCount)
list[i] = _reader(r);
else
list.Add(_reader(r));
}
if (len < listCount)
list.RemoveRange(len, listCount - len);
}
public override void WriteList(TClass inf, NetDataWriter w)
{
var list = WriteListHelper(inf, w, out int len);
for (int i = 0; i < len; i++)
_writer(w, list[i]);
}
public override void ReadArray(TClass inf, NetDataReader r)
{
var arr = ReadArrayHelper(inf, r);
int len = arr.Length;
for (int i = 0; i < len; i++)
arr[i] = _reader(r);
}
public override void WriteArray(TClass inf, NetDataWriter w)
{
var arr = WriteArrayHelper(inf, w);
int len = arr.Length;
for (int i = 0; i < len; i++)
_writer(w, arr[i]);
}
}
private sealed class FastCallStruct<TClass, TProperty> : FastCallSpecific<TClass, TProperty> where TProperty : struct, INetSerializable
{
private TProperty _p;
public override void Read(TClass inf, NetDataReader r)
{
_p.Deserialize(r);
Setter(inf, _p);
}
public override void Write(TClass inf, NetDataWriter w)
{
_p = Getter(inf);
_p.Serialize(w);
}
public override void ReadList(TClass inf, NetDataReader r)
{
var list = ReadListHelper(inf, r, out int len);
int listCount = list.Count;
for (int i = 0; i < len; i++)
{
var itm = default(TProperty);
itm.Deserialize(r);
if(i < listCount)
list[i] = itm;
else
list.Add(itm);
}
if (len < listCount)
list.RemoveRange(len, listCount - len);
}
public override void WriteList(TClass inf, NetDataWriter w)
{
var list = WriteListHelper(inf, w, out int len);
for (int i = 0; i < len; i++)
list[i].Serialize(w);
}
public override void ReadArray(TClass inf, NetDataReader r)
{
var arr = ReadArrayHelper(inf, r);
int len = arr.Length;
for (int i = 0; i < len; i++)
arr[i].Deserialize(r);
}
public override void WriteArray(TClass inf, NetDataWriter w)
{
var arr = WriteArrayHelper(inf, w);
int len = arr.Length;
for (int i = 0; i < len; i++)
arr[i].Serialize(w);
}
}
private sealed class FastCallClass<TClass, TProperty> : FastCallSpecific<TClass, TProperty> where TProperty : class, INetSerializable
{
private readonly Func<TProperty> _constructor;
public FastCallClass(Func<TProperty> constructor) { _constructor = constructor; }
public override void Read(TClass inf, NetDataReader r)
{
var p = _constructor();
p.Deserialize(r);
Setter(inf, p);
}
public override void Write(TClass inf, NetDataWriter w)
{
var p = Getter(inf);
p?.Serialize(w);
}
public override void ReadList(TClass inf, NetDataReader r)
{
var list = ReadListHelper(inf, r, out int len);
int listCount = list.Count;
for (int i = 0; i < len; i++)
{
if (i < listCount)
{
list[i].Deserialize(r);
}
else
{
var itm = _constructor();
itm.Deserialize(r);
list.Add(itm);
}
}
if (len < listCount)
list.RemoveRange(len, listCount - len);
}
public override void WriteList(TClass inf, NetDataWriter w)
{
var list = WriteListHelper(inf, w, out int len);
for (int i = 0; i < len; i++)
list[i].Serialize(w);
}
public override void ReadArray(TClass inf, NetDataReader r)
{
var arr = ReadArrayHelper(inf, r);
int len = arr.Length;
for (int i = 0; i < len; i++)
{
arr[i] = _constructor();
arr[i].Deserialize(r);
}
}
public override void WriteArray(TClass inf, NetDataWriter w)
{
var arr = WriteArrayHelper(inf, w);
int len = arr.Length;
for (int i = 0; i < len; i++)
arr[i].Serialize(w);
}
}
private class IntSerializer<T> : FastCallSpecific<T, int>
{
public override void Read(T inf, NetDataReader r) { Setter(inf, r.GetInt()); }
public override void Write(T inf, NetDataWriter w) { w.Put(Getter(inf)); }
public override void ReadArray(T inf, NetDataReader r) { SetterArr(inf, r.GetIntArray()); }
public override void WriteArray(T inf, NetDataWriter w) { w.PutArray(GetterArr(inf)); }
}
private class UIntSerializer<T> : FastCallSpecific<T, uint>
{
public override void Read(T inf, NetDataReader r) { Setter(inf, r.GetUInt()); }
public override void Write(T inf, NetDataWriter w) { w.Put(Getter(inf)); }
public override void ReadArray(T inf, NetDataReader r) { SetterArr(inf, r.GetUIntArray()); }
public override void WriteArray(T inf, NetDataWriter w) { w.PutArray(GetterArr(inf)); }
}
private class ShortSerializer<T> : FastCallSpecific<T, short>
{
public override void Read(T inf, NetDataReader r) { Setter(inf, r.GetShort()); }
public override void Write(T inf, NetDataWriter w) { w.Put(Getter(inf)); }
public override void ReadArray(T inf, NetDataReader r) { SetterArr(inf, r.GetShortArray()); }
public override void WriteArray(T inf, NetDataWriter w) { w.PutArray(GetterArr(inf)); }
}
private class UShortSerializer<T> : FastCallSpecific<T, ushort>
{
public override void Read(T inf, NetDataReader r) { Setter(inf, r.GetUShort()); }
public override void Write(T inf, NetDataWriter w) { w.Put(Getter(inf)); }
public override void ReadArray(T inf, NetDataReader r) { SetterArr(inf, r.GetUShortArray()); }
public override void WriteArray(T inf, NetDataWriter w) { w.PutArray(GetterArr(inf)); }
}
private class LongSerializer<T> : FastCallSpecific<T, long>
{
public override void Read(T inf, NetDataReader r) { Setter(inf, r.GetLong()); }
public override void Write(T inf, NetDataWriter w) { w.Put(Getter(inf)); }
public override void ReadArray(T inf, NetDataReader r) { SetterArr(inf, r.GetLongArray()); }
public override void WriteArray(T inf, NetDataWriter w) { w.PutArray(GetterArr(inf)); }
}
private class ULongSerializer<T> : FastCallSpecific<T, ulong>
{
public override void Read(T inf, NetDataReader r) { Setter(inf, r.GetULong()); }
public override void Write(T inf, NetDataWriter w) { w.Put(Getter(inf)); }
public override void ReadArray(T inf, NetDataReader r) { SetterArr(inf, r.GetULongArray()); }
public override void WriteArray(T inf, NetDataWriter w) { w.PutArray(GetterArr(inf)); }
}
private class ByteSerializer<T> : FastCallSpecific<T, byte>
{
public override void Read(T inf, NetDataReader r) { Setter(inf, r.GetByte()); }
public override void Write(T inf, NetDataWriter w) { w.Put(Getter(inf)); }
public override void ReadArray(T inf, NetDataReader r) { SetterArr(inf, r.GetBytesWithLength()); }
public override void WriteArray(T inf, NetDataWriter w) { w.PutBytesWithLength(GetterArr(inf)); }
}
private class SByteSerializer<T> : FastCallSpecific<T, sbyte>
{
public override void Read(T inf, NetDataReader r) { Setter(inf, r.GetSByte()); }
public override void Write(T inf, NetDataWriter w) { w.Put(Getter(inf)); }
public override void ReadArray(T inf, NetDataReader r) { SetterArr(inf, r.GetSBytesWithLength()); }
public override void WriteArray(T inf, NetDataWriter w) { w.PutSBytesWithLength(GetterArr(inf)); }
}
private class FloatSerializer<T> : FastCallSpecific<T, float>
{
public override void Read(T inf, NetDataReader r) { Setter(inf, r.GetFloat()); }
public override void Write(T inf, NetDataWriter w) { w.Put(Getter(inf)); }
public override void ReadArray(T inf, NetDataReader r) { SetterArr(inf, r.GetFloatArray()); }
public override void WriteArray(T inf, NetDataWriter w) { w.PutArray(GetterArr(inf)); }
}
private class DoubleSerializer<T> : FastCallSpecific<T, double>
{
public override void Read(T inf, NetDataReader r) { Setter(inf, r.GetDouble()); }
public override void Write(T inf, NetDataWriter w) { w.Put(Getter(inf)); }
public override void ReadArray(T inf, NetDataReader r) { SetterArr(inf, r.GetDoubleArray()); }
public override void WriteArray(T inf, NetDataWriter w) { w.PutArray(GetterArr(inf)); }
}
private class BoolSerializer<T> : FastCallSpecific<T, bool>
{
public override void Read(T inf, NetDataReader r) { Setter(inf, r.GetBool()); }
public override void Write(T inf, NetDataWriter w) { w.Put(Getter(inf)); }
public override void ReadArray(T inf, NetDataReader r) { SetterArr(inf, r.GetBoolArray()); }
public override void WriteArray(T inf, NetDataWriter w) { w.PutArray(GetterArr(inf)); }
}
private class CharSerializer<T> : FastCallSpecificAuto<T, char>
{
protected override void ElementWrite(NetDataWriter w, ref char prop) { w.Put(prop); }
protected override void ElementRead(NetDataReader r, out char prop) { prop = r.GetChar(); }
}
private class IPEndPointSerializer<T> : FastCallSpecificAuto<T, IPEndPoint>
{
protected override void ElementWrite(NetDataWriter w, ref IPEndPoint prop) { w.Put(prop); }
protected override void ElementRead(NetDataReader r, out IPEndPoint prop) { prop = r.GetNetEndPoint(); }
}
private class StringSerializer<T> : FastCallSpecific<T, string>
{
private readonly int _maxLength;
public StringSerializer(int maxLength) { _maxLength = maxLength > 0 ? maxLength : short.MaxValue; }
public override void Read(T inf, NetDataReader r) { Setter(inf, r.GetString(_maxLength)); }
public override void Write(T inf, NetDataWriter w) { w.Put(Getter(inf), _maxLength); }
public override void ReadArray(T inf, NetDataReader r) { SetterArr(inf, r.GetStringArray(_maxLength)); }
public override void WriteArray(T inf, NetDataWriter w) { w.PutArray(GetterArr(inf), _maxLength); }
}
private class EnumByteSerializer<T> : FastCall<T>
{
protected readonly PropertyInfo Property;
protected readonly Type PropertyType;
public EnumByteSerializer(PropertyInfo property, Type propertyType)
{
Property = property;
PropertyType = propertyType;
}
public override void Read(T inf, NetDataReader r) { Property.SetValue(inf, Enum.ToObject(PropertyType, r.GetByte()), null); }
public override void Write(T inf, NetDataWriter w) { w.Put((byte)Property.GetValue(inf, null)); }
public override void ReadArray(T inf, NetDataReader r) { throw new InvalidTypeException("Unsupported type: Enum[]"); }
public override void WriteArray(T inf, NetDataWriter w) { throw new InvalidTypeException("Unsupported type: Enum[]"); }
public override void ReadList(T inf, NetDataReader r) { throw new InvalidTypeException("Unsupported type: List<Enum>"); }
public override void WriteList(T inf, NetDataWriter w) { throw new InvalidTypeException("Unsupported type: List<Enum>"); }
}
private class EnumIntSerializer<T> : EnumByteSerializer<T>
{
public EnumIntSerializer(PropertyInfo property, Type propertyType) : base(property, propertyType) { }
public override void Read(T inf, NetDataReader r) { Property.SetValue(inf, Enum.ToObject(PropertyType, r.GetInt()), null); }
public override void Write(T inf, NetDataWriter w) { w.Put((int)Property.GetValue(inf, null)); }
}
private sealed class ClassInfo<T>
{
public static ClassInfo<T> Instance;
private readonly FastCall<T>[] _serializers;
private readonly int _membersCount;
public ClassInfo(List<FastCall<T>> serializers)
{
_membersCount = serializers.Count;
_serializers = serializers.ToArray();
}
public void Write(T obj, NetDataWriter writer)
{
for (int i = 0; i < _membersCount; i++)
{
var s = _serializers[i];
if (s.Type == CallType.Basic)
s.Write(obj, writer);
else if (s.Type == CallType.Array)
s.WriteArray(obj, writer);
else
s.WriteList(obj, writer);
}
}
public void Read(T obj, NetDataReader reader)
{
for (int i = 0; i < _membersCount; i++)
{
var s = _serializers[i];
if (s.Type == CallType.Basic)
s.Read(obj, reader);
else if(s.Type == CallType.Array)
s.ReadArray(obj, reader);
else
s.ReadList(obj, reader);
}
}
}
private abstract class CustomType
{
public abstract FastCall<T> Get<T>();
}
private sealed class CustomTypeStruct<TProperty> : CustomType where TProperty : struct, INetSerializable
{
public override FastCall<T> Get<T>() { return new FastCallStruct<T, TProperty>(); }
}
private sealed class CustomTypeClass<TProperty> : CustomType where TProperty : class, INetSerializable
{
private readonly Func<TProperty> _constructor;
public CustomTypeClass(Func<TProperty> constructor) { _constructor = constructor; }
public override FastCall<T> Get<T>() { return new FastCallClass<T, TProperty>(_constructor); }
}
private sealed class CustomTypeStatic<TProperty> : CustomType
{
private readonly Action<NetDataWriter, TProperty> _writer;
private readonly Func<NetDataReader, TProperty> _reader;
public CustomTypeStatic(Action<NetDataWriter, TProperty> writer, Func<NetDataReader, TProperty> reader)
{
_writer = writer;
_reader = reader;
}
public override FastCall<T> Get<T>() { return new FastCallStatic<T, TProperty>(_writer, _reader); }
}
/// <summary>
/// Register custom property type
/// </summary>
/// <typeparam name="T">INetSerializable structure</typeparam>
public void RegisterNestedType<T>() where T : struct, INetSerializable
{
_registeredTypes.Add(typeof(T), new CustomTypeStruct<T>());
}
/// <summary>
/// Register custom property type
/// </summary>
/// <typeparam name="T">INetSerializable class</typeparam>
public void RegisterNestedType<T>(Func<T> constructor) where T : class, INetSerializable
{
_registeredTypes.Add(typeof(T), new CustomTypeClass<T>(constructor));
}
/// <summary>
/// Register custom property type
/// </summary>
/// <typeparam name="T">Any packet</typeparam>
/// <param name="writer">custom type writer</param>
/// <param name="reader">custom type reader</param>
public void RegisterNestedType<T>(Action<NetDataWriter, T> writer, Func<NetDataReader, T> reader)
{
_registeredTypes.Add(typeof(T), new CustomTypeStatic<T>(writer, reader));
}
private NetDataWriter _writer;
private readonly int _maxStringLength;
private readonly Dictionary<Type, CustomType> _registeredTypes = new Dictionary<Type, CustomType>();
public NetSerializer() : this(0)
{
}
public NetSerializer(int maxStringLength)
{
_maxStringLength = maxStringLength;
}
private ClassInfo<T> RegisterInternal<T>()
{
if (ClassInfo<T>.Instance != null)
return ClassInfo<T>.Instance;
Type t = typeof(T);
var props = t.GetProperties(
BindingFlags.Instance |
BindingFlags.Public |
BindingFlags.GetProperty |
BindingFlags.SetProperty);
var serializers = new List<FastCall<T>>();
for (int i = 0; i < props.Length; i++)
{
var property = props[i];
var propertyType = property.PropertyType;
var elementType = propertyType.IsArray ? propertyType.GetElementType() : propertyType;
var callType = propertyType.IsArray ? CallType.Array : CallType.Basic;
if (propertyType.IsGenericType && propertyType.GetGenericTypeDefinition() == typeof(List<>))
{
elementType = propertyType.GetGenericArguments()[0];
callType = CallType.List;
}
if (Attribute.IsDefined(property, typeof(IgnoreDataMemberAttribute)))
continue;
var getMethod = property.GetGetMethod();
var setMethod = property.GetSetMethod();
if (getMethod == null || setMethod == null)
continue;
FastCall<T> serialzer = null;
if (propertyType.IsEnum)
{
var underlyingType = Enum.GetUnderlyingType(propertyType);
if (underlyingType == typeof(byte))
serialzer = new EnumByteSerializer<T>(property, propertyType);
else if (underlyingType == typeof(int))
serialzer = new EnumIntSerializer<T>(property, propertyType);
else
throw new InvalidTypeException("Not supported enum underlying type: " + underlyingType.Name);
}
else if (elementType == typeof(string))
serialzer = new StringSerializer<T>(_maxStringLength);
else if (elementType == typeof(bool))
serialzer = new BoolSerializer<T>();
else if (elementType == typeof(byte))
serialzer = new ByteSerializer<T>();
else if (elementType == typeof(sbyte))
serialzer = new SByteSerializer<T>();
else if (elementType == typeof(short))
serialzer = new ShortSerializer<T>();
else if (elementType == typeof(ushort))
serialzer = new UShortSerializer<T>();
else if (elementType == typeof(int))
serialzer = new IntSerializer<T>();
else if (elementType == typeof(uint))
serialzer = new UIntSerializer<T>();
else if (elementType == typeof(long))
serialzer = new LongSerializer<T>();
else if (elementType == typeof(ulong))
serialzer = new ULongSerializer<T>();
else if (elementType == typeof(float))
serialzer = new FloatSerializer<T>();
else if (elementType == typeof(double))
serialzer = new DoubleSerializer<T>();
else if (elementType == typeof(char))
serialzer = new CharSerializer<T>();
else if (elementType == typeof(IPEndPoint))
serialzer = new IPEndPointSerializer<T>();
else
{
_registeredTypes.TryGetValue(elementType, out var customType);
if (customType != null)
serialzer = customType.Get<T>();
}
if (serialzer != null)
{
serialzer.Init(getMethod, setMethod, callType);
serializers.Add(serialzer);
}
else
{
throw new InvalidTypeException("Unknown property type: " + propertyType.FullName);
}
}
ClassInfo<T>.Instance = new ClassInfo<T>(serializers);
return ClassInfo<T>.Instance;
}
/// <exception cref="InvalidTypeException"><typeparamref name="T"/>'s fields are not supported, or it has no fields</exception>
public void Register<T>()
{
RegisterInternal<T>();
}
/// <summary>
/// Reads packet with known type
/// </summary>
/// <param name="reader">NetDataReader with packet</param>
/// <returns>Returns packet if packet in reader is matched type</returns>
/// <exception cref="InvalidTypeException"><typeparamref name="T"/>'s fields are not supported, or it has no fields</exception>
public T Deserialize<T>(NetDataReader reader) where T : class, new()
{
var info = RegisterInternal<T>();
var result = new T();
try
{
info.Read(result, reader);
}
catch
{
return null;
}
return result;
}
/// <summary>
/// Reads packet with known type (non alloc variant)
/// </summary>
/// <param name="reader">NetDataReader with packet</param>
/// <param name="target">Deserialization target</param>
/// <returns>Returns true if packet in reader is matched type</returns>
/// <exception cref="InvalidTypeException"><typeparamref name="T"/>'s fields are not supported, or it has no fields</exception>
public bool Deserialize<T>(NetDataReader reader, T target) where T : class, new()
{
var info = RegisterInternal<T>();
try
{
info.Read(target, reader);
}
catch
{
return false;
}
return true;
}
/// <summary>
/// Serialize object to NetDataWriter (fast)
/// </summary>
/// <param name="writer">Serialization target NetDataWriter</param>
/// <param name="obj">Object to serialize</param>
/// <exception cref="InvalidTypeException"><typeparamref name="T"/>'s fields are not supported, or it has no fields</exception>
public void Serialize<T>(NetDataWriter writer, T obj) where T : class, new()
{
RegisterInternal<T>().Write(obj, writer);
}
/// <summary>
/// Serialize object to byte array
/// </summary>
/// <param name="obj">Object to serialize</param>
/// <returns>byte array with serialized data</returns>
public byte[] Serialize<T>(T obj) where T : class, new()
{
if (_writer == null)
_writer = new NetDataWriter();
_writer.Reset();
Serialize(_writer, obj);
return _writer.CopyData();
}
}
}

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@@ -0,0 +1,11 @@
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@@ -0,0 +1,423 @@
using System;
namespace LiteNetLib.Utils
{
/// <summary>
/// Represents RFC4330 SNTP packet used for communication to and from a network time server.
/// </summary>
/// <remarks>
/// <para>
/// Most applications should just use the <see cref="NtpPacket.CorrectionOffset" /> property.
/// </para>
/// <para>
/// The same data structure represents both request and reply packets.
/// Request and reply differ in which properties are set and to what values.
/// </para>
/// <para>
/// The only real property is <see cref="NtpPacket.Bytes" />.
/// All other properties read from and write to the underlying byte array
/// with the exception of <see cref="NtpPacket.DestinationTimestamp" />,
/// which is not part of the packet on network and it is instead set locally after receiving the packet.
/// </para>
/// <para>
/// Copied from <a href="https://guerrillantp.machinezoo.com/">GuerrillaNtp project</a>
/// with permission from Robert Vazan (@robertvazan) under MIT license, see https://github.com/RevenantX/LiteNetLib/pull/236
/// </para>
/// </remarks>
public class NtpPacket
{
private static readonly DateTime Epoch = new DateTime(1900, 1, 1);
/// <summary>
/// Gets RFC4330-encoded SNTP packet.
/// </summary>
/// <value>
/// Byte array containing RFC4330-encoded SNTP packet. It is at least 48 bytes long.
/// </value>
/// <remarks>
/// This is the only real property. All other properties except
/// <see cref="NtpPacket.DestinationTimestamp" /> read from or write to this byte array.
/// </remarks>
public byte[] Bytes { get; }
/// <summary>
/// Gets the leap second indicator.
/// </summary>
/// <value>
/// Leap second warning, if any. Special value
/// <see cref="NtpLeapIndicator.AlarmCondition" /> indicates unsynchronized server clock.
/// Default is <see cref="NtpLeapIndicator.NoWarning" />.
/// </value>
/// <remarks>
/// Only servers fill in this property. Clients can consult this property for possible leap second warning.
/// </remarks>
public NtpLeapIndicator LeapIndicator => (NtpLeapIndicator)((Bytes[0] & 0xC0) >> 6);
/// <summary>
/// Gets or sets protocol version number.
/// </summary>
/// <value>
/// SNTP protocol version. Default is 4, which is the latest version at the time of this writing.
/// </value>
/// <remarks>
/// In request packets, clients should leave this property at default value 4.
/// Servers usually reply with the same protocol version.
/// </remarks>
public int VersionNumber
{
get => (Bytes[0] & 0x38) >> 3;
private set => Bytes[0] = (byte)((Bytes[0] & ~0x38) | value << 3);
}
/// <summary>
/// Gets or sets SNTP packet mode, i.e. whether this is client or server packet.
/// </summary>
/// <value>
/// SNTP packet mode. Default is <see cref="NtpMode.Client" /> in newly created packets.
/// Server reply should have this property set to <see cref="NtpMode.Server" />.
/// </value>
public NtpMode Mode
{
get => (NtpMode)(Bytes[0] & 0x07);
private set => Bytes[0] = (byte)((Bytes[0] & ~0x07) | (int)value);
}
/// <summary>
/// Gets server's distance from the reference clock.
/// </summary>
/// <value>
/// <para>
/// Distance from the reference clock. This property is set only in server reply packets.
/// Servers connected directly to reference clock hardware set this property to 1.
/// Statum number is incremented by 1 on every hop down the NTP server hierarchy.
/// </para>
/// <para>
/// Special value 0 indicates that this packet is a Kiss-o'-Death message
/// with kiss code stored in <see cref="NtpPacket.ReferenceId" />.
/// </para>
/// </value>
public int Stratum => Bytes[1];
/// <summary>
/// Gets server's preferred polling interval.
/// </summary>
/// <value>
/// Polling interval in log2 seconds, e.g. 4 stands for 16s and 17 means 131,072s.
/// </value>
public int Poll => Bytes[2];
/// <summary>
/// Gets the precision of server clock.
/// </summary>
/// <value>
/// Clock precision in log2 seconds, e.g. -20 for microsecond precision.
/// </value>
public int Precision => (sbyte)Bytes[3];
/// <summary>
/// Gets the total round-trip delay from the server to the reference clock.
/// </summary>
/// <value>
/// Round-trip delay to the reference clock. Normally a positive value smaller than one second.
/// </value>
public TimeSpan RootDelay => GetTimeSpan32(4);
/// <summary>
/// Gets the estimated error in time reported by the server.
/// </summary>
/// <value>
/// Estimated error in time reported by the server. Normally a positive value smaller than one second.
/// </value>
public TimeSpan RootDispersion => GetTimeSpan32(8);
/// <summary>
/// Gets the ID of the time source used by the server or Kiss-o'-Death code sent by the server.
/// </summary>
/// <value>
/// <para>
/// ID of server's time source or Kiss-o'-Death code.
/// Purpose of this property depends on value of <see cref="NtpPacket.Stratum" /> property.
/// </para>
/// <para>
/// Stratum 1 servers write here one of several special values that describe the kind of hardware clock they use.
/// </para>
/// <para>
/// Stratum 2 and lower servers set this property to IPv4 address of their upstream server.
/// If upstream server has IPv6 address, the address is hashed, because it doesn't fit in this property.
/// </para>
/// <para>
/// When server sets <see cref="NtpPacket.Stratum" /> to special value 0,
/// this property contains so called kiss code that instructs the client to stop querying the server.
/// </para>
/// </value>
public uint ReferenceId => GetUInt32BE(12);
/// <summary>
/// Gets or sets the time when the server clock was last set or corrected.
/// </summary>
/// <value>
/// Time when the server clock was last set or corrected or <c>null</c> when not specified.
/// </value>
/// <remarks>
/// This Property is usually set only by servers. It usually lags server's current time by several minutes,
/// so don't use this property for time synchronization.
/// </remarks>
public DateTime? ReferenceTimestamp => GetDateTime64(16);
/// <summary>
/// Gets or sets the time when the client sent its request.
/// </summary>
/// <value>
/// This property is <c>null</c> in request packets.
/// In reply packets, it is the time when the client sent its request.
/// Servers copy this value from <see cref="NtpPacket.TransmitTimestamp" />
/// that they find in received request packet.
/// </value>
/// <seealso cref="NtpPacket.CorrectionOffset" />
/// <seealso cref="NtpPacket.RoundTripTime" />
public DateTime? OriginTimestamp => GetDateTime64(24);
/// <summary>
/// Gets or sets the time when the request was received by the server.
/// </summary>
/// <value>
/// This property is <c>null</c> in request packets.
/// In reply packets, it is the time when the server received client request.
/// </value>
/// <seealso cref="NtpPacket.CorrectionOffset" />
/// <seealso cref="NtpPacket.RoundTripTime" />
public DateTime? ReceiveTimestamp => GetDateTime64(32);
/// <summary>
/// Gets or sets the time when the packet was sent.
/// </summary>
/// <value>
/// Time when the packet was sent. It should never be <c>null</c>.
/// Default value is <see cref="System.DateTime.UtcNow" />.
/// </value>
/// <remarks>
/// This property must be set by both clients and servers.
/// </remarks>
/// <seealso cref="NtpPacket.CorrectionOffset" />
/// <seealso cref="NtpPacket.RoundTripTime" />
public DateTime? TransmitTimestamp { get { return GetDateTime64(40); } private set { SetDateTime64(40, value); } }
/// <summary>
/// Gets or sets the time of reception of response SNTP packet on the client.
/// </summary>
/// <value>
/// Time of reception of response SNTP packet on the client. It is <c>null</c> in request packets.
/// </value>
/// <remarks>
/// This property is not part of the protocol and has to be set when reply packet is received.
/// </remarks>
/// <seealso cref="NtpPacket.CorrectionOffset" />
/// <seealso cref="NtpPacket.RoundTripTime" />
public DateTime? DestinationTimestamp { get; private set; }
/// <summary>
/// Gets the round-trip time to the server.
/// </summary>
/// <value>
/// Time the request spent traveling to the server plus the time the reply spent traveling back.
/// This is calculated from timestamps in the packet as <c>(t1 - t0) + (t3 - t2)</c>
/// where t0 is <see cref="NtpPacket.OriginTimestamp" />,
/// t1 is <see cref="NtpPacket.ReceiveTimestamp" />,
/// t2 is <see cref="NtpPacket.TransmitTimestamp" />,
/// and t3 is <see cref="NtpPacket.DestinationTimestamp" />.
/// This property throws an exception in request packets.
/// </value>
public TimeSpan RoundTripTime
{
get
{
CheckTimestamps();
return (ReceiveTimestamp.Value - OriginTimestamp.Value) + (DestinationTimestamp.Value - TransmitTimestamp.Value);
}
}
/// <summary>
/// Gets the offset that should be added to local time to synchronize it with server time.
/// </summary>
/// <value>
/// Time difference between server and client. It should be added to local time to get server time.
/// It is calculated from timestamps in the packet as <c>0.5 * ((t1 - t0) - (t3 - t2))</c>
/// where t0 is <see cref="NtpPacket.OriginTimestamp" />,
/// t1 is <see cref="NtpPacket.ReceiveTimestamp" />,
/// t2 is <see cref="NtpPacket.TransmitTimestamp" />,
/// and t3 is <see cref="NtpPacket.DestinationTimestamp" />.
/// This property throws an exception in request packets.
/// </value>
public TimeSpan CorrectionOffset
{
get
{
CheckTimestamps();
return TimeSpan.FromTicks(((ReceiveTimestamp.Value - OriginTimestamp.Value) - (DestinationTimestamp.Value - TransmitTimestamp.Value)).Ticks / 2);
}
}
/// <summary>
/// Initializes default request packet.
/// </summary>
/// <remarks>
/// Properties <see cref="NtpPacket.Mode" /> and <see cref="NtpPacket.VersionNumber" />
/// are set appropriately for request packet. Property <see cref="NtpPacket.TransmitTimestamp" />
/// is set to <see cref="System.DateTime.UtcNow" />.
/// </remarks>
public NtpPacket() : this(new byte[48])
{
Mode = NtpMode.Client;
VersionNumber = 4;
TransmitTimestamp = DateTime.UtcNow;
}
/// <summary>
/// Initializes packet from received data.
/// </summary>
internal NtpPacket(byte[] bytes)
{
if (bytes.Length < 48)
throw new ArgumentException("SNTP reply packet must be at least 48 bytes long.", "bytes");
Bytes = bytes;
}
/// <summary>
/// Initializes packet from data received from a server.
/// </summary>
/// <param name="bytes">Data received from the server.</param>
/// <param name="destinationTimestamp">Utc time of reception of response SNTP packet on the client.</param>
/// <returns></returns>
public static NtpPacket FromServerResponse(byte[] bytes, DateTime destinationTimestamp)
{
return new NtpPacket(bytes) { DestinationTimestamp = destinationTimestamp };
}
internal void ValidateRequest()
{
if (Mode != NtpMode.Client)
throw new InvalidOperationException("This is not a request SNTP packet.");
if (VersionNumber == 0)
throw new InvalidOperationException("Protocol version of the request is not specified.");
if (TransmitTimestamp == null)
throw new InvalidOperationException("TransmitTimestamp must be set in request packet.");
}
internal void ValidateReply()
{
if (Mode != NtpMode.Server)
throw new InvalidOperationException("This is not a reply SNTP packet.");
if (VersionNumber == 0)
throw new InvalidOperationException("Protocol version of the reply is not specified.");
if (Stratum == 0)
throw new InvalidOperationException(string.Format("Received Kiss-o'-Death SNTP packet with code 0x{0:x}.", ReferenceId));
if (LeapIndicator == NtpLeapIndicator.AlarmCondition)
throw new InvalidOperationException("SNTP server has unsynchronized clock.");
CheckTimestamps();
}
private void CheckTimestamps()
{
if (OriginTimestamp == null)
throw new InvalidOperationException("Origin timestamp is missing.");
if (ReceiveTimestamp == null)
throw new InvalidOperationException("Receive timestamp is missing.");
if (TransmitTimestamp == null)
throw new InvalidOperationException("Transmit timestamp is missing.");
if (DestinationTimestamp == null)
throw new InvalidOperationException("Destination timestamp is missing.");
}
private DateTime? GetDateTime64(int offset)
{
var field = GetUInt64BE(offset);
if (field == 0)
return null;
return new DateTime(Epoch.Ticks + Convert.ToInt64(field * (1.0 / (1L << 32) * 10000000.0)));
}
private void SetDateTime64(int offset, DateTime? value)
{
SetUInt64BE(offset, value == null ? 0 : Convert.ToUInt64((value.Value.Ticks - Epoch.Ticks) * (0.0000001 * (1L << 32))));
}
private TimeSpan GetTimeSpan32(int offset)
{
return TimeSpan.FromSeconds(GetInt32BE(offset) / (double)(1 << 16));
}
private ulong GetUInt64BE(int offset)
{
return SwapEndianness(BitConverter.ToUInt64(Bytes, offset));
}
private void SetUInt64BE(int offset, ulong value)
{
FastBitConverter.GetBytes(Bytes, offset, SwapEndianness(value));
}
private int GetInt32BE(int offset)
{
return (int)GetUInt32BE(offset);
}
private uint GetUInt32BE(int offset)
{
return SwapEndianness(BitConverter.ToUInt32(Bytes, offset));
}
private static uint SwapEndianness(uint x)
{
return ((x & 0xff) << 24) | ((x & 0xff00) << 8) | ((x & 0xff0000) >> 8) | ((x & 0xff000000) >> 24);
}
private static ulong SwapEndianness(ulong x)
{
return ((ulong)SwapEndianness((uint)x) << 32) | SwapEndianness((uint)(x >> 32));
}
}
/// <summary>
/// Represents leap second warning from the server that instructs the client to add or remove leap second.
/// </summary>
/// <seealso cref="NtpPacket.LeapIndicator" />
public enum NtpLeapIndicator
{
/// <summary>
/// No leap second warning. No action required.
/// </summary>
NoWarning,
/// <summary>
/// Warns the client that the last minute of the current day has 61 seconds.
/// </summary>
LastMinuteHas61Seconds,
/// <summary>
/// Warns the client that the last minute of the current day has 59 seconds.
/// </summary>
LastMinuteHas59Seconds,
/// <summary>
/// Special value indicating that the server clock is unsynchronized and the returned time is unreliable.
/// </summary>
AlarmCondition
}
/// <summary>
/// Describes SNTP packet mode, i.e. client or server.
/// </summary>
/// <seealso cref="NtpPacket.Mode" />
public enum NtpMode
{
/// <summary>
/// Identifies client-to-server SNTP packet.
/// </summary>
Client = 3,
/// <summary>
/// Identifies server-to-client SNTP packet.
/// </summary>
Server = 4,
}
}

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using System.Net;
using System.Net.Sockets;
namespace LiteNetLib.Utils
{
internal sealed class NtpRequest
{
private const int ResendTimer = 1000;
private const int KillTimer = 10000;
public const int DefaultPort = 123;
private readonly IPEndPoint _ntpEndPoint;
private int _resendTime = ResendTimer;
private int _killTime = 0;
public NtpRequest(IPEndPoint endPoint)
{
_ntpEndPoint = endPoint;
}
public bool NeedToKill => _killTime >= KillTimer;
public bool Send(Socket socket, int time)
{
_resendTime += time;
_killTime += time;
if (_resendTime < ResendTimer)
{
return false;
}
var packet = new NtpPacket();
try
{
int sendCount = socket.SendTo(packet.Bytes, 0, packet.Bytes.Length, SocketFlags.None, _ntpEndPoint);
return sendCount == packet.Bytes.Length;
}
catch
{
return false;
}
}
}
}

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"name": "com.revenantx.litenetlib",
"version": "1.0.1-1",
"displayName": "LiteNetLib",
"description": "Lite reliable UDP library for .NET Standard 2.0 (Mono, .NET Core, .NET Framework)",
"unity": "2018.3",
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"name": "RevenantX",
"url": "https://github.com/RevenantX"
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using LiteNetLib;
using LiteNetLib.Utils;
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using System.Net;
using System.Net.Sockets;
using System.Runtime;
using System;
using Netick.Unity;
namespace Netick.Transport
{
[CreateAssetMenu(fileName = "LiteNetLibTransportProvider", menuName = "Netick/Transport/LiteNetLibTransportProvider", order = 1)]
public class LiteNetLibTransportProvider : NetworkTransportProvider
{
public override NetworkTransport MakeTransportInstance() => new LiteNetLibTransport();
}
public class LiteNetLibTransport : NetworkTransport, INetEventListener
{
public class LNLConnection : TransportConnection
{
public LiteNetLibTransport Transport;
public NetPeer LNLPeer;
public override IEndPoint EndPoint => LNLPeer.EndPoint.ToNetickEndPoint();
public override int Mtu => LNLPeer.Mtu;
public LNLConnection(LiteNetLibTransport transport)
{
Transport = transport;
}
public unsafe override void Send(IntPtr ptr, int length)
{
byte* p = (byte*)ptr.ToPointer();
for (int i = 0; i < length; i++)
Transport._bytes[i] = p[i];
LNLPeer.Send(Transport._bytes, 0, length, DeliveryMethod.Unreliable);
}
}
private NetManager _netManager;
private BitBuffer _buffer;
// private int _bufferSize;
private readonly byte[] _bytes = new byte[2048];
private readonly byte[] _connectionBytes = new byte[200];
private int _port;
private bool _isServer = false;
private Dictionary<NetPeer, LNLConnection> _clients = new Dictionary<NetPeer, LNLConnection>();
private Queue<LNLConnection> _freeClients = new Queue<LNLConnection>();
// LAN Matchmaking
private List<Session> _sessions = new List<Session>();
private NetDataWriter _writer = new NetDataWriter();
private string _machineName;
public override void Init()
{
_buffer = new BitBuffer(createChunks: false);
// _bufferSize = 875 * 4;
_netManager = new NetManager((INetEventListener)this) { AutoRecycle = true };
_machineName = Environment.MachineName;
//_netManager.DisconnectTimeout = 1000;
for (int i = 0; i < Engine.Config.MaxPlayers; i++)
_freeClients.Enqueue(new LNLConnection(this));
}
public override void PollEvents()
{
_netManager.PollEvents();
}
public override void ForceUpdate()
{
_netManager.TriggerUpdate();
}
public override void Run(RunMode mode, int port)
{
if (mode == RunMode.Client)
{
_netManager.UnconnectedMessagesEnabled = true;
_netManager.Start();
_isServer = false;
}
else
{
_netManager.BroadcastReceiveEnabled = true;
_netManager.Start(port);
_isServer = true;
}
_port = port;
}
public override void Shutdown()
{
_netManager.Stop();
}
public override void Connect(string address, int port, byte[] connectionData, int connectionDataLen)
{
if (!_netManager.IsRunning)
_netManager.Start();
if (connectionData == null)
{
_netManager.Connect(address, port, "");
}
else
{
_writer.Reset();
_writer.Put(connectionData, 0, connectionDataLen);
_netManager.Connect(address, port, _writer);
}
}
public override void Disconnect(TransportConnection connection)
{
_netManager.DisconnectPeer(((LNLConnection)connection).LNLPeer);
}
//public override void HostMatch(string name)
//{
//}
//public override void UpdateMatchList()
//{
// if (!_netManager.IsRunning)
// _netManager.Start();
// _sessions.Clear();
// _writer.Reset();
// _writer.Put(NetickConfig.LAN_DISCOVERY);
// _netManager.SendBroadcast(_writer, _port);
//}
/// ////////////////////////////////////////////
void INetEventListener.OnConnectionRequest(ConnectionRequest request)
{
if (_clients.Count >= Engine.Config.MaxPlayers)
{
request.Reject();
return;
}
int len = request.Data.AvailableBytes;
request.Data.GetBytes(_connectionBytes, 0, len);
bool accepted = NetworkPeer.OnConnectRequest(_connectionBytes, len, request.RemoteEndPoint.ToNetickEndPoint());
if (accepted)
request.Accept();
else
request.Reject();
}
void INetEventListener.OnPeerConnected(NetPeer peer)
{
var connection = _freeClients.Dequeue();
connection.LNLPeer = peer;
_clients.Add(peer, connection);
NetworkPeer.OnConnected(connection);
}
void INetEventListener.OnPeerDisconnected(NetPeer peer, DisconnectInfo disconnectInfo)
{
if (!_isServer)
{
if (disconnectInfo.Reason == DisconnectReason.ConnectionRejected || disconnectInfo.Reason == DisconnectReason.ConnectionFailed)
{
NetworkPeer.OnConnectFailed(ConnectionFailedReason.Refused);
return;
}
if (peer == null)
{
Debug.Log($"ERROR: {disconnectInfo.Reason}");
NetworkPeer.OnConnectFailed(ConnectionFailedReason.Refused);
return;
}
}
if (peer == null)
{
return;
}
if (_clients.ContainsKey(peer))
{
TransportDisconnectReason reason = disconnectInfo.Reason == DisconnectReason.Timeout ? TransportDisconnectReason.Timeout : TransportDisconnectReason.Shutdown;
NetworkPeer.OnDisconnected(_clients[peer], reason);
_freeClients.Enqueue(_clients[peer]);
_clients.Remove(peer);
}
}
unsafe void INetEventListener.OnNetworkReceive(NetPeer peer, NetPacketReader reader, byte channel, DeliveryMethod deliveryMethod)
{
if (_clients.TryGetValue(peer, out var c))
{
var len = reader.AvailableBytes;
reader.GetBytes(_bytes, 0, reader.AvailableBytes);
fixed(byte* ptr = _bytes)
{
_buffer.SetFrom(ptr, len, _bytes.Length);
NetworkPeer.Receive(c, _buffer);
}
}
}
void INetEventListener.OnNetworkReceiveUnconnected(IPEndPoint remoteEndPoint, NetPacketReader reader, UnconnectedMessageType messageType)
{
//ulong msgType = reader.GetULong();
//if (msgType == NetickConfig.LAN_DISCOVERY_RESPONSE)
//{
// string name = reader.GetString();
// int port = reader.GetInt();
// var newSession = new Session()
// {
// Name = name,
// IP = remoteEndPoint.Address.ToString(),
// Port = port
// };
// if (!_sessions.Contains(newSession))
// _sessions.Add(newSession);
// OnMatchListUpdate(_sessions);
//}
//else if (_isServer && msgType == NetickConfig.LAN_DISCOVERY)
//{
// _writer.Reset();
// _writer.Put(NetickConfig.LAN_DISCOVERY_RESPONSE);
// _writer.Put(_machineName);
// _writer.Put(_port);
// _netManager.SendUnconnectedMessage(_writer, remoteEndPoint);
//}
}
void INetEventListener.OnNetworkError(IPEndPoint endPoint, SocketError socketError)
{
Debug.Log("[S] NetworkError: " + socketError);
NetworkPeer.OnConnectFailed(ConnectionFailedReason.Refused);
}
void INetEventListener.OnNetworkLatencyUpdate(NetPeer peer, int latency) { }
}
}

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