private void HandleSplitMessage(PlayerNetworkSession playerSession, ConnectedPackage package, SplitPartPackage splitMessage, Player player)
{
int spId = package._splitPacketId;
int spIdx = package._splitPacketIndex;
int spCount = package._splitPacketCount;
if (!playerSession.Splits.ContainsKey(spId))
{
playerSession.Splits.TryAdd(spId, new SplitPartPackage[spCount]);
}
SplitPartPackage[] spPackets = playerSession.Splits[spId];
spPackets[spIdx] = splitMessage;
bool haveEmpty = false;
for (int i = 0; i < spPackets.Length; i++)
{
haveEmpty = haveEmpty || spPackets[i] == null;
}
if (!haveEmpty)
{
Log.DebugFormat("Got all {0} split packages for split ID: {1}", spCount, spId);
SplitPartPackage[] waste;
playerSession.Splits.TryRemove(spId, out waste);
MemoryStream stream = new MemoryStream();
for (int i = 0; i < spPackets.Length; i++)
{
SplitPartPackage splitPartPackage = spPackets[i];
byte[] buf = splitPartPackage.Message;
if (buf == null)
{
Log.Error("Expected bytes in splitpart, but got none");
continue;
}
stream.Write(buf, 0, buf.Length);
splitPartPackage.PutPool();
}
byte[] buffer = stream.ToArray();
try
{
Package fullMessage = PackageFactory.CreatePackage(buffer[0], buffer) ?? new UnknownPackage(buffer[0], buffer);
fullMessage.DatagramSequenceNumber = package._datagramSequenceNumber;
fullMessage.ReliableMessageNumber = package._reliableMessageNumber;
fullMessage.OrderingChannel = package._orderingChannel;
fullMessage.OrderingIndex = package._orderingIndex;
HandlePackage(fullMessage, playerSession);
fullMessage.PutPool();
}
catch (Exception e)
{
player.Disconnect("Bad package received from client.");
}
}
}
private void HandleRakNetMessage(IPEndPoint senderEndpoint, OpenConnectionRequest2 incoming)
{
PlayerNetworkSession session;
lock (_playerSessions)
{
DateTime trash;
if (!_connectionAttemps.TryRemove(senderEndpoint, out trash))
{
Log.WarnFormat("Unexpected connection request packet from {0}. Probably a resend.", senderEndpoint.Address);
return;
}
if (_playerSessions.TryGetValue(senderEndpoint, out session))
{
// Already connecting, then this is just a duplicate
if (session.State == ConnectionState.Connecting /* && DateTime.UtcNow < session.LastUpdatedTime + TimeSpan.FromSeconds(2)*/)
{
return;
}
Log.InfoFormat("Unexpected session from {0}. Removing old session and disconnecting old player.", senderEndpoint.Address);
Player oldPlayer = session.Player;
oldPlayer?.Disconnect("Reconnecting.", false);
_playerSessions.TryRemove(senderEndpoint, out session);
}
session = new PlayerNetworkSession(null, senderEndpoint, incoming.mtuSize)
{
State = ConnectionState.Connecting,
LastUpdatedTime = DateTime.UtcNow,
Mtuize = incoming.mtuSize
};
_playerSessions.TryAdd(senderEndpoint, session);
}
Player player = PlayerFactory.CreatePlayer(this, senderEndpoint);
player.ClientGuid = incoming.clientGuid;
player.NetworkSession = session;
session.Player = player;
var reply = OpenConnectionReply2.CreateObject();
reply.serverGuid = 12345;
reply.clientendpoint = senderEndpoint;
reply.mtuSize = incoming.mtuSize;
reply.doSecurityAndHandshake = new byte[1];
var data = reply.Encode();
reply.PutPool();
TraceSend(reply);
SendData(data, senderEndpoint);
}
private void HandleSplitMessage(PlayerNetworkSession playerSession, ConnectedPackage package, SplitPartPackage splitMessage, Player player)
{
int spId = package._splitPacketId;
int spIdx = package._splitPacketIndex;
int spCount = package._splitPacketCount;
if (!playerSession.Splits.ContainsKey(spId))
{
playerSession.Splits.TryAdd(spId, new SplitPartPackage[spCount]);
}
SplitPartPackage[] spPackets = playerSession.Splits[spId];
spPackets[spIdx] = splitMessage;
bool haveEmpty = false;
for (int i = 0; i < spPackets.Length; i++)
{
haveEmpty = haveEmpty || spPackets[i] == null;
}
if (!haveEmpty)
{
Log.DebugFormat("Got all {0} split packages for split ID: {1}", spCount, spId);
SplitPartPackage[] waste;
playerSession.Splits.TryRemove(spId, out waste);
MemoryStream stream = new MemoryStream();
for (int i = 0; i < spPackets.Length; i++)
{
SplitPartPackage splitPartPackage = spPackets[i];
byte[] buf = splitPartPackage.Message;
if (buf == null)
{
Log.Error("Expected bytes in splitpart, but got none");
continue;
}
stream.Write(buf, 0, buf.Length);
splitPartPackage.PutPool();
}
byte[] buffer = stream.ToArray();
try
{
Package fullMessage = PackageFactory.CreatePackage(buffer[1], buffer) ?? new UnknownPackage(buffer[1], buffer);
Log.Debug($"0x{fullMessage.Id:x2}\n{Package.HexDump(buffer)}");
fullMessage.DatagramSequenceNumber = package._datagramSequenceNumber;
fullMessage.ReliableMessageNumber = package._reliableMessageNumber;
fullMessage.OrderingChannel = package._orderingChannel;
fullMessage.OrderingIndex = package._orderingIndex;
HandlePackage(fullMessage, playerSession);
fullMessage.PutPool();
}
catch (Exception e)
{
player.Disconnect("Bad package received from client.");
}
}
}
public void Kick(Player player, string otherUser)
{
player.Level.BroadcastMessage(string.Format(ChatColors.Gold + "{0} tried to kick {1} but kicked self instead!!", player.Username, otherUser), type: MessageType.Raw);
player.Disconnect("You kicked yourself :-)");
}
public void Ban(Player player, string otherUser)
{
player.Level.BroadcastMessage(string.Format(ChatColors.Gold + "{0} tried to ban {1} but banned self instead!!", player.Username, otherUser), type: MessageType.Raw);
player.Disconnect("Oopps, banned the wrong player. See ya soon!!");
}
private void ProcessMessage(byte[] receiveBytes, IPEndPoint senderEndpoint)
{
byte msgId = receiveBytes[0];
if (msgId == 0xFE)
{
Log.InfoFormat("A query detected from: {0}", senderEndpoint.Address);
HandleQuery(receiveBytes, senderEndpoint);
}
else if (msgId <= (byte)DefaultMessageIdTypes.ID_USER_PACKET_ENUM)
{
HandleRakNetMessage(receiveBytes, senderEndpoint, msgId);
}
else
{
PlayerNetworkSession playerSession;
if (!_playerSessions.TryGetValue(senderEndpoint, out playerSession))
{
//Log.DebugFormat("Receive MCPE message 0x{1:x2} without session {0}", senderEndpoint.Address, msgId);
//if (!_badPacketBans.ContainsKey(senderEndpoint.Address))
//{
// _badPacketBans.Add(senderEndpoint.Address, true);
//}
return;
}
Player player = playerSession.Player;
if (player == null)
{
Log.ErrorFormat("Receive MCPE message 0x{1:x2} without player {0}. Session removed.", senderEndpoint.Address, msgId);
_playerSessions.TryRemove(senderEndpoint, out playerSession);
//if (!_badPacketBans.ContainsKey(senderEndpoint.Address))
//{
// _badPacketBans.Add(senderEndpoint.Address, true);
//}
return;
}
if (playerSession.Evicted)
{
return;
}
playerSession.LastUpdatedTime = DateTime.UtcNow;
DatagramHeader header = new DatagramHeader(receiveBytes[0]);
if (!header.isACK && !header.isNAK && header.isValid)
{
if (receiveBytes[0] == 0xa0)
{
throw new Exception("Receive ERROR, NAK in wrong place");
}
ConnectedPackage package = ConnectedPackage.CreateObject();
try
{
package.Decode(receiveBytes);
}
catch (Exception e)
{
player.Disconnect("Bad package received from client.");
//if (Log.IsDebugEnabled)
{
Log.Warn("Bad packet " + receiveBytes[0], e);
}
GreylistManager.Blacklist(senderEndpoint.Address);
return;
}
// IF reliable code below is enabled, useItem start sending doubles
// for some unknown reason.
//Reliability reliability = package._reliability;
//if (reliability == Reliability.Reliable
// || reliability == Reliability.ReliableSequenced
// || reliability == Reliability.ReliableOrdered
// )
{
EnqueueAck(playerSession, package._datagramSequenceNumber);
}
DelayedProcessing(playerSession, package);
package.PutPool();
}
else if (header.isACK && header.isValid)
{
HandleAck(playerSession, receiveBytes);
}
else if (header.isNAK && header.isValid)
{
HandleNak(playerSession, receiveBytes);
}
else if (!header.isValid)
{
Log.Warn("!!!! ERROR, Invalid header !!!!!");
}
}
}
private void Update(object state)
{
if (!Monitor.TryEnter(_updateGlobalLock))
{
return;
}
_forceQuitTimer.Restart();
try
{
long now = DateTime.UtcNow.Ticks / TimeSpan.TicksPerMillisecond;
Parallel.ForEach(_playerSessions, delegate(KeyValuePair <IPEndPoint, PlayerNetworkSession> pair)
{
PlayerNetworkSession session = pair.Value;
if (session == null)
{
return;
}
if (session.Evicted)
{
return;
}
Player player = session.Player;
long lastUpdate = session.LastUpdatedTime.Ticks / TimeSpan.TicksPerMillisecond;
bool serverHasNoLag = ServerInfo.AvailableBytes < 1000;
if (serverHasNoLag && lastUpdate + InacvitityTimeout + 3000 < now)
{
session.Evicted = true;
// Disconnect user
ThreadPool.QueueUserWorkItem(delegate(object o)
{
PlayerNetworkSession s = o as PlayerNetworkSession;
if (s != null)
{
Player p = s.Player;
if (p != null)
{
p.Disconnect("You've been kicked with reason: Network timeout.");
}
else
{
if (ServerInfo.PlayerSessions.TryRemove(session.EndPoint, out session))
{
session.Player = null;
session.State = ConnectionState.Unconnected;
session.Evicted = true;
session.Clean();
}
}
}
}, session);
return;
}
if (serverHasNoLag && session.State != ConnectionState.Connected && player != null && lastUpdate + 3000 < now)
{
ThreadPool.QueueUserWorkItem(delegate(object o)
{
PlayerNetworkSession s = o as PlayerNetworkSession;
if (s != null)
{
Player p = s.Player;
if (p != null)
{
p.Disconnect("You've been kicked with reason: Lost connection.");
}
}
}, session);
return;
}
if (player == null)
{
return;
}
if (serverHasNoLag && lastUpdate + InacvitityTimeout < now && !session.WaitForAck)
{
player.DetectLostConnection();
session.WaitForAck = true;
}
if (player.Rto == 0)
{
return;
}
long rto = Math.Max(100, player.Rto);
var queue = session.WaitingForAcksQueue;
foreach (KeyValuePair <int, Datagram> datagramPair in queue)
{
// We don't do too much processing in each step, becasue one bad queue will hold the others.
//if (_forceQuitTimer.ElapsedMilliseconds > 100)
//{
// Log.WarnFormat("Update aborted early");
// return;
//}
var datagram = datagramPair.Value;
if (!datagram.Timer.IsRunning)
{
Log.ErrorFormat("Timer not running for #{0}", datagram.Header.datagramSequenceNumber);
datagram.Timer.Restart();
continue;
}
if (player.Rtt == -1)
{
return;
}
//if (session.WaitForAck) return;
long elapsedTime = datagram.Timer.ElapsedMilliseconds;
long datagramTimout = rto * (datagram.TransmissionCount + session.ResendCount + 1);
datagramTimout = Math.Min(datagramTimout, 3000);
//if(elapsedTime > 5000)
//{
// Datagram deleted;
// queue.TryRemove(datagram.Header.datagramSequenceNumber, out deleted);
//}
//else
if (serverHasNoLag && elapsedTime >= datagramTimout)
{
//if (session.WaitForAck) return;
//session.WaitForAck = session.ResendCount++ > 3;
Datagram deleted;
if (queue.TryRemove(datagram.Header.datagramSequenceNumber, out deleted))
{
session.ErrorCount++;
if (deleted.TransmissionCount > 3)
{
if (Log.IsDebugEnabled)
{
Log.WarnFormat("TIMEOUT, Retransmission count remove from ACK queue #{0} Type: {2} (0x{2:x2}) for {1} ({3} > {4}) RTO {5}",
deleted.Header.datagramSequenceNumber.IntValue(),
player.Username,
deleted.FirstMessageId,
elapsedTime,
datagramTimout,
rto);
}
deleted.PutPool();
//session.WaitForAck = true;
Interlocked.Increment(ref ServerInfo.NumberOfFails);
continue;
}
if (!session.Evicted)
{
ThreadPool.QueueUserWorkItem(delegate(object data)
{
if (Log.IsDebugEnabled)
{
Log.WarnFormat("TIMEOUT, Resent #{0} Type: {2} (0x{2:x2}) for {1} ({3} > {4}) RTO {5}",
deleted.Header.datagramSequenceNumber.IntValue(),
player.Username,
deleted.FirstMessageId,
elapsedTime,
datagramTimout,
player.Rto);
}
SendDatagram(session, (Datagram)data);
Interlocked.Increment(ref ServerInfo.NumberOfResends);
}, datagram);
}
}
}
}
});
}
finally
{
if (_forceQuitTimer.ElapsedMilliseconds > 100)
{
Log.WarnFormat("Update took unexpected long time: {0}", _forceQuitTimer.ElapsedMilliseconds);
}
Monitor.Exit(_updateGlobalLock);
_cleanerTimer.Change(10, Timeout.Infinite);
}
}
private void DelayedProcessing(PlayerNetworkSession playerSession, ConnectedPackage package)
{
Player player = playerSession.Player;
if (ForwardAllPlayers)
{
player.SendPackage(new McpeTransfer
{
endpoint = ForwardTarget
}, true);
return;
}
List <Package> messages = package.Messages;
foreach (var message in messages)
{
message.DatagramSequenceNumber = package._datagramSequenceNumber;
message.OrderingChannel = package._orderingChannel;
message.OrderingIndex = package._orderingIndex;
if (message is SplitPartPackage)
{
message.Source = "Receive SplitPartPackage";
SplitPartPackage splitMessage = message as SplitPartPackage;
int spId = package._splitPacketId;
int spIdx = package._splitPacketIndex;
int spCount = package._splitPacketCount;
if (!playerSession.Splits.ContainsKey(spId))
{
playerSession.Splits.Add(spId, new SplitPartPackage[spCount]);
}
SplitPartPackage[] spPackets = playerSession.Splits[spId];
spPackets[spIdx] = splitMessage;
bool haveEmpty = false;
for (int i = 0; i < spPackets.Length; i++)
{
haveEmpty = haveEmpty || spPackets[i] == null;
}
if (!haveEmpty)
{
Log.DebugFormat("Got all {0} split packages for split ID: {1}", spCount, spId);
MemoryStream stream = new MemoryStream();
for (int i = 0; i < spPackets.Length; i++)
{
SplitPartPackage splitPartPackage = spPackets[i];
byte[] buf = splitPartPackage.Message;
stream.Write(buf, 0, buf.Length);
splitPartPackage.PutPool();
}
playerSession.Splits.Remove(spId);
byte[] buffer = stream.ToArray();
try
{
Package fullMessage = PackageFactory.CreatePackage(buffer[0], buffer) ?? new UnknownPackage(buffer[0], buffer);
fullMessage.DatagramSequenceNumber = package._datagramSequenceNumber;
fullMessage.OrderingChannel = package._orderingChannel;
fullMessage.OrderingIndex = package._orderingIndex;
HandlePackage(fullMessage, playerSession);
fullMessage.PutPool();
}
catch (Exception e)
{
player.Disconnect("Bad package received from client.");
}
}
continue;
}
message.Timer.Restart();
HandlePackage(message, playerSession);
message.PutPool(); // Handled in HandlePacket now()
}
}
private void HandleRakNetMessage(byte[] receiveBytes, IPEndPoint senderEndpoint, byte msgId)
{
DefaultMessageIdTypes msgIdType = (DefaultMessageIdTypes)msgId;
Package message = PackageFactory.CreatePackage(msgId, receiveBytes);
if (message == null)
{
if (!_badPacketBans.ContainsKey(senderEndpoint.Address))
{
_badPacketBans.Add(senderEndpoint.Address, true);
}
Log.ErrorFormat("Receive bad packet with ID: {0} (0x{0:x2}) {2} from {1}", msgId, senderEndpoint.Address, (DefaultMessageIdTypes)msgId);
return;
}
message.Source = "RakNet";
TraceReceive(message);
switch (msgIdType)
{
case DefaultMessageIdTypes.ID_UNCONNECTED_PING:
case DefaultMessageIdTypes.ID_UNCONNECTED_PING_OPEN_CONNECTIONS:
{
UnconnectedPing incoming = (UnconnectedPing)message;
//TODO: This needs to be verified with RakNet first
//response.sendpingtime = msg.sendpingtime;
//response.sendpongtime = DateTimeOffset.UtcNow.Ticks / TimeSpan.TicksPerMillisecond;
var packet = UnconnectedPong.CreateObject();
packet.serverId = 22345;
packet.pingId = incoming.pingId;
packet.serverName = MotdProvider.GetMotd(ServerInfo);
var data = packet.Encode();
packet.PutPool();
TraceSend(packet);
SendData(data, senderEndpoint, new object());
break;
}
case DefaultMessageIdTypes.ID_OPEN_CONNECTION_REQUEST_1:
{
OpenConnectionRequest1 incoming = (OpenConnectionRequest1)message;
Log.DebugFormat("New connection from: {0} {1}", senderEndpoint.Address, senderEndpoint.Port);
lock (_playerSessions)
{
// Already connecting, then this is just a duplicate
if (_connectionAttemps.ContainsKey(senderEndpoint))
{
DateTime created;
_connectionAttemps.TryGetValue(senderEndpoint, out created);
if (DateTime.UtcNow < created + TimeSpan.FromSeconds(3))
{
return;
}
}
//PlayerNetworkSession session;
//if (_playerSessions.TryGetValue(senderEndpoint, out session))
//{
// Log.DebugFormat("Reconnection detected from {0}. Removing old session and disconnecting old player.", senderEndpoint.Address);
// Player oldPlayer = session.Player;
// if (oldPlayer != null)
// {
// oldPlayer.Disconnect("Reconnecting.");
// }
// else
// {
// _playerSessions.TryRemove(session.EndPoint, out session);
// }
//}
if (!_connectionAttemps.ContainsKey(senderEndpoint))
{
_connectionAttemps.Add(senderEndpoint, DateTime.UtcNow);
}
}
var packet = OpenConnectionReply1.CreateObject();
packet.serverGuid = 12345;
packet.mtuSize = incoming.mtuSize;
packet.serverHasSecurity = 0;
var data = packet.Encode();
packet.PutPool();
TraceSend(packet);
SendData(data, senderEndpoint, new object());
break;
}
case DefaultMessageIdTypes.ID_OPEN_CONNECTION_REQUEST_2:
{
OpenConnectionRequest2 incoming = (OpenConnectionRequest2)message;
PlayerNetworkSession session;
lock (_playerSessions)
{
if (_connectionAttemps.ContainsKey(senderEndpoint))
{
_connectionAttemps.Remove(senderEndpoint);
}
else
{
Log.ErrorFormat("Unexpected connection request packet from {0}.", senderEndpoint.Address);
return;
}
//PlayerNetworkSession session;
if (_playerSessions.TryGetValue(senderEndpoint, out session))
{
Log.WarnFormat("Reconnection detected from {0}. Removing old session and disconnecting old player.", senderEndpoint.Address);
Player oldPlayer = session.Player;
if (oldPlayer != null)
{
oldPlayer.Disconnect("Reconnecting.");
}
else
{
_playerSessions.TryRemove(session.EndPoint, out session);
}
}
if (_playerSessions.TryGetValue(senderEndpoint, out session))
{
// Already connecting, then this is just a duplicate
if (session.State == ConnectionState.Connecting /* && DateTime.UtcNow < session.LastUpdatedTime + TimeSpan.FromSeconds(2)*/)
{
return;
}
Log.ErrorFormat("Unexpected session from {0}. Removing old session and disconnecting old player.", senderEndpoint.Address);
Player oldPlayer = session.Player;
if (oldPlayer != null)
{
oldPlayer.Disconnect("Reconnecting.");
}
else
{
_playerSessions.TryRemove(session.EndPoint, out session);
}
}
session = new PlayerNetworkSession(null, senderEndpoint)
{
State = ConnectionState.Connecting,
LastUpdatedTime = DateTime.UtcNow,
Mtuize = incoming.mtuSize
};
_playerSessions.TryAdd(senderEndpoint, session);
}
Player player = PlayerFactory.CreatePlayer(this, senderEndpoint, incoming.mtuSize);
player.ClientGuid = incoming.clientGuid;
player.NetworkSession = session;
session.Player = player;
var reply = OpenConnectionReply2.CreateObject();
reply.serverGuid = 12345;
reply.mtuSize = incoming.mtuSize;
reply.doSecurityAndHandshake = new byte[0];
var data = reply.Encode();
reply.PutPool();
TraceSend(reply);
SendData(data, senderEndpoint, session.SyncRoot);
break;
}
default:
if (!_badPacketBans.ContainsKey(senderEndpoint.Address))
{
_badPacketBans.Add(senderEndpoint.Address, true);
}
Log.ErrorFormat("Receive unexpected packet with ID: {0} (0x{0:x2}) {2} from {1}", msgId, senderEndpoint.Address, (DefaultMessageIdTypes)msgId);
break;
}
message.PutPool();
}
private void ProcessMessage(byte[] receiveBytes, IPEndPoint senderEndpoint)
{
byte msgId = receiveBytes[0];
if (msgId == 0xFE)
{
Log.InfoFormat("A query detected from: {0}", senderEndpoint.Address);
HandleQuery(receiveBytes, senderEndpoint);
}
else if (msgId <= (byte)DefaultMessageIdTypes.ID_USER_PACKET_ENUM)
{
HandleRakNetMessage(receiveBytes, senderEndpoint, msgId);
}
else
{
PlayerNetworkSession playerSession;
if (!_playerSessions.TryGetValue(senderEndpoint, out playerSession))
{
Log.DebugFormat("Receive MCPE message 0x{1:x2} without session {0}", senderEndpoint.Address, msgId);
return;
}
Player player = playerSession.Player;
if (player == null)
{
Log.ErrorFormat("Receive MCPE message 0x{1:x2} without player {0}. Session removed.", senderEndpoint.Address, msgId);
_playerSessions.TryRemove(senderEndpoint, out playerSession);
return;
}
if (playerSession.Evicted)
{
return;
}
playerSession.LastUpdatedTime = DateTime.UtcNow;
DatagramHeader header = new DatagramHeader(receiveBytes[0]);
if (!header.isACK && !header.isNAK && header.isValid)
{
if (receiveBytes[0] == 0xa0)
{
throw new Exception("Receive ERROR, NAK in wrong place");
}
ConnectedPackage package = ConnectedPackage.CreateObject();
try
{
package.Decode(receiveBytes);
}
catch (Exception e)
{
player.Disconnect("Bad package received from client.");
return;
}
// IF reliable code below is enabled, useItem start sending doubles
// for some unknown reason.
//Reliability reliability = package._reliability;
//if (reliability == Reliability.Reliable
// || reliability == Reliability.ReliableSequenced
// || reliability == Reliability.ReliableOrdered
// )
{
EnqueueAck(playerSession, package._datagramSequenceNumber);
}
List <Package> messages = package.Messages;
if (messages.Count == 1)
{
McpeBatch batch = messages.First() as McpeBatch;
if (batch != null)
{
batch.Source = "Client";
messages.Clear();
// Get bytes
byte[] payload = batch.payload;
// Decompress bytes
MemoryStream stream = new MemoryStream(payload);
if (stream.ReadByte() != 0x78)
{
throw new InvalidDataException("Incorrect ZLib header. Expected 0x78 0x9C");
}
stream.ReadByte();
using (var defStream2 = new DeflateStream(stream, CompressionMode.Decompress, false))
{
// Get actual package out of bytes
MemoryStream destination = new MemoryStream();
defStream2.CopyTo(destination);
byte[] internalBuffer = destination.ToArray();
messages.Add(PackageFactory.CreatePackage(internalBuffer[0], internalBuffer) ?? new UnknownPackage(internalBuffer[0], internalBuffer));
}
batch.PutPool();
}
}
DelayedProcessing(playerSession, package);
package.PutPool();
}
else if (header.isACK && header.isValid)
{
ServerInfo.NumberOfAckReceive++;
HandleAck(playerSession, receiveBytes);
}
else if (header.isNAK && header.isValid)
{
ServerInfo.NumberOfNakReceive++;
HandleNak(playerSession, receiveBytes);
}
else if (!header.isValid)
{
Log.Warn("!!!! ERROR, Invalid header !!!!!");
}
}
}
private void Update(object state)
{
if (!Monitor.TryEnter(_updateGlobalLock))
{
return;
}
try
{
long now = DateTime.UtcNow.Ticks / TimeSpan.TicksPerMillisecond;
Parallel.ForEach(_playerSessions.Values.ToArray(), delegate(PlayerNetworkSession session)
{
if (session == null)
{
return;
}
if (session.Evicted)
{
return;
}
try
{
Player player = session.Player;
long lastUpdate = session.LastUpdatedTime.Ticks / TimeSpan.TicksPerMillisecond;
if (lastUpdate + InacvitityTimeout + 3000 + Math.Min(5000, ServerInfo.AvailableBytes) < now)
{
session.Evicted = true;
// Disconnect user
ThreadPool.QueueUserWorkItem(delegate(object o)
{
PlayerNetworkSession s = o as PlayerNetworkSession;
if (s != null)
{
Player p = s.Player;
if (p != null)
{
p.Disconnect("You've been kicked with reason: Network timeout.");
}
else
{
if (ServerInfo.PlayerSessions.TryRemove(session.EndPoint, out session))
{
session.Player = null;
session.State = ConnectionState.Unconnected;
session.Evicted = true;
session.Clean();
}
}
}
}, session);
return;
}
if (session.State != ConnectionState.Connected && player != null && lastUpdate + 3000 < now)
{
ThreadPool.QueueUserWorkItem(delegate(object o)
{
PlayerNetworkSession s = o as PlayerNetworkSession;
if (s != null)
{
Player p = s.Player;
if (p != null)
{
p.Disconnect("You've been kicked with reason: Lost connection.");
}
}
}, session);
return;
}
if (player == null)
{
return;
}
if (lastUpdate + InacvitityTimeout < now)
{
player.DetectLostConnection();
}
long rto = Math.Max(100, player.Rto);
var queue = session.WaitingForAcksQueue;
foreach (var datagram in queue.Values)
{
if (!datagram.Timer.IsRunning)
{
Log.ErrorFormat("Timer not running for #{0}", datagram.Header.datagramSequenceNumber);
datagram.Timer.Restart();
continue;
}
if (player.Rtt == -1)
{
continue;
}
long elapsedTime = datagram.Timer.ElapsedMilliseconds;
if (elapsedTime >= rto * (datagram.TransmissionCount + 2))
{
Datagram deleted;
if (queue.TryRemove(datagram.Header.datagramSequenceNumber, out deleted))
{
session.ErrorCount++;
if (deleted.TransmissionCount > 1)
{
Log.DebugFormat("Remove from ACK queue #{0} Type: {2} (0x{2:x2}) for {1} ({3} > {4}) RTT {5}",
deleted.Header.datagramSequenceNumber.IntValue(),
player.Username,
deleted.FirstMessageId,
elapsedTime,
rto,
player.Rtt);
foreach (MessagePart part in deleted.MessageParts)
{
part.PutPool();
}
deleted.PutPool();
continue;
}
if (!session.Evicted)
{
ThreadPool.QueueUserWorkItem(delegate(object data)
{
try
{
Log.DebugFormat("Resent #{0} Type: {2} (0x{2:x2}) for {1} ({3} > {4}) RTT {5}",
deleted.Header.datagramSequenceNumber.IntValue(),
player.Username,
deleted.FirstMessageId,
elapsedTime,
rto,
player.Rtt);
SendDatagram(session, (Datagram)data);
}
catch (Exception e)
{
}
}, datagram);
}
}
}
}
}
catch (Exception e)
{
}
});
}
finally
{
Monitor.Exit(_updateGlobalLock);
}
}
private void HandleSplitMessage(PlayerNetworkSession playerSession, ConnectedPackage package, SplitPartPackage splitMessage, Player player)
{
int spId = package._splitPacketId;
int spIdx = package._splitPacketIndex;
int spCount = package._splitPacketCount;
if (!playerSession.Splits.ContainsKey(spId))
{
playerSession.Splits.TryAdd(spId, new SplitPartPackage[spCount]);
}
SplitPartPackage[] spPackets = playerSession.Splits[spId];
spPackets[spIdx] = splitMessage;
bool haveEmpty = false;
for (int i = 0; i < spPackets.Length; i++)
{
haveEmpty = haveEmpty || spPackets[i] == null;
}
if (!haveEmpty)
{
Log.DebugFormat("Got all {0} split packages for split ID: {1}", spCount, spId);
SplitPartPackage[] waste;
playerSession.Splits.TryRemove(spId, out waste);
MemoryStream stream = MemoryStreamManager.GetStream();
for (int i = 0; i < spPackets.Length; i++)
{
SplitPartPackage splitPartPackage = spPackets[i];
byte[] buf = splitPartPackage.Message;
if (buf == null)
{
Log.Error("Expected bytes in splitpart, but got none");
continue;
}
stream.Write(buf, 0, buf.Length);
splitPartPackage.PutPool();
}
byte[] buffer = stream.ToArray();
try
{
ConnectedPackage newPackage = ConnectedPackage.CreateObject();
newPackage._datagramSequenceNumber = package._datagramSequenceNumber;
newPackage._reliability = package._reliability;
newPackage._reliableMessageNumber = package._reliableMessageNumber;
newPackage._sequencingIndex = package._sequencingIndex;
newPackage._orderingIndex = package._orderingIndex;
newPackage._orderingChannel = package._orderingChannel;
newPackage._hasSplit = false;
Package fullMessage = PackageFactory.CreatePackage(buffer[0], buffer, "raknet") ?? new UnknownPackage(buffer[0], buffer);
fullMessage.DatagramSequenceNumber = package._datagramSequenceNumber;
fullMessage.Reliability = package._reliability;
fullMessage.ReliableMessageNumber = package._reliableMessageNumber;
fullMessage.OrderingIndex = package._orderingIndex;
fullMessage.OrderingChannel = package._orderingChannel;
newPackage.Messages = new List <Package>();
newPackage.Messages.Add(fullMessage);
Log.Debug($"Assembled split package {newPackage._reliability} message #{newPackage._reliableMessageNumber}, Chan: #{newPackage._orderingChannel}, OrdIdx: #{newPackage._orderingIndex}");
HandleConnectedPackage(playerSession, newPackage);
newPackage.PutPool();
}
catch (Exception e)
{
Log.Error("Error during split message parsing", e);
if (Log.IsDebugEnabled)
{
Log.Debug($"0x{buffer[0]:x2}\n{Package.HexDump(buffer)}");
}
player.Disconnect("Bad package received from client.");
}
}
}