public Datagram()
{
MessageParts = new List <MessagePart>(50);
Header = new DatagramHeader
{
isValid = true,
needsBAndAs = true,
//datagramSequenceNumber = datagramSequenceNumber
};
_buf = new MemoryStream(new byte[1600], 0, 1600, true, true);
}
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 !!!!!");
}
}
}
protected override void EncodePackage()
{
_buffer.Position = 0;
byte[] encodedMessage = Buffer;
if (Buffer == null)
{
encodedMessage = Messages.First().Encode();
}
MessageLength = encodedMessage.Length;
// Datagram header
if (_datagramHeader == null)
{
_datagramHeader = new DatagramHeader(0x8c);
}
if (_splitPacketCount > 1 && _splitPacketIndex > 0)
{
Write((byte)0x8c);
}
else
{
Write((byte)0x84);
}
Write(_datagramSequenceNumber);
// foreach message
// Message header
byte rely = (byte)_reliability;
Write((byte)((rely << 5) | (_hasSplit ? Convert.ToByte("00010000", 2) : 0x00)));
Write((short)(MessageLength * 8)); // length
if (_reliability == Reliability.Reliable ||
_reliability == Reliability.ReliableOrdered ||
_reliability == Reliability.ReliableSequenced ||
_reliability == Reliability.ReliableWithAckReceipt ||
_reliability == Reliability.ReliableOrderedWithAckReceipt
)
{
Write(_reliableMessageNumber);
}
if (_reliability == Reliability.UnreliableSequenced ||
_reliability == Reliability.ReliableOrdered ||
_reliability == Reliability.ReliableSequenced ||
_reliability == Reliability.ReliableOrderedWithAckReceipt
)
{
Write(_orderingIndex);
Write(_orderingChannel);
}
if (_hasSplit)
{
Write(_splitPacketCount);
Write(_splitPacketId);
Write(_splitPacketIndex);
}
// Message body
Write(encodedMessage);
}
protected override void DecodePackage()
{
Messages = new List <Package>();
_buffer.Position = 0;
_datagramHeader = new DatagramHeader(ReadByte());
_datagramSequenceNumber = ReadLittle();
while (_buffer.Position != _buffer.Length)
{
byte flags = ReadByte();
_reliability = (Reliability)((flags & Convert.ToByte("011100000", 2)) >> 5);
int hasSplitPacket = ((flags & Convert.ToByte("00010000", 2)) >> 0);
short dataBitLength = ReadShort();
if (_reliability == Reliability.Reliable ||
_reliability == Reliability.ReliableSequenced ||
_reliability == Reliability.ReliableOrdered
)
{
_reliableMessageNumber = ReadLittle();
}
else
{
_reliableMessageNumber = -1;
}
if (_reliability == Reliability.UnreliableSequenced ||
_reliability == Reliability.ReliableSequenced
)
{
_sequencingIndex = ReadLittle();
}
if (_reliability == Reliability.UnreliableSequenced ||
_reliability == Reliability.ReliableSequenced ||
_reliability == Reliability.ReliableOrdered ||
_reliability == Reliability.ReliableOrderedWithAckReceipt
)
{
_orderingIndex = ReadLittle();
_orderingChannel = ReadByte(); // flags
}
else
{
_orderingChannel = 0;
}
if (hasSplitPacket != 0)
{
_splitPacketCount = ReadInt();
_splitPacketId = ReadShort();
_splitPacketIndex = ReadInt();
}
else
{
_splitPacketCount = 0;
}
// Slurp the payload
MessageLength = (int)Math.Ceiling((((double)dataBitLength) / 8));
byte[] internalBuffer = ReadBytes(MessageLength);
if (hasSplitPacket != 0)
{
Messages.Add(new SplitPartPackage(internalBuffer[0], internalBuffer));
return;
}
Messages.Add(PackageFactory.CreatePackage(internalBuffer[0], internalBuffer) ?? new UnknownPackage(internalBuffer[0], internalBuffer));
if (MessageLength != internalBuffer.Length)
{
Debug.WriteLine("Missmatch of requested lenght, and actual read lenght");
}
}
}
protected override void DecodePackage()
{
Messages = new List <Package>();
_buffer.Position = 0;
_datagramHeader = new DatagramHeader(ReadByte());
_datagramSequenceNumber = ReadLittle();
_datagramHeader.datagramSequenceNumber = _datagramSequenceNumber;
while (_buffer.Position < _buffer.Length)
{
byte flags = ReadByte();
_reliability = (Reliability)((flags & Convert.ToByte("011100000", 2)) >> 5);
_hasSplit = ((flags & Convert.ToByte("00010000", 2)) > 0);
short dataBitLength = ReadShort();
if (_reliability == Reliability.Reliable ||
_reliability == Reliability.ReliableSequenced ||
_reliability == Reliability.ReliableOrdered
)
{
_reliableMessageNumber = ReadLittle();
}
else
{
_reliableMessageNumber = -1;
}
if (_reliability == Reliability.UnreliableSequenced ||
_reliability == Reliability.ReliableSequenced
)
{
_sequencingIndex = ReadLittle();
}
if (_reliability == Reliability.UnreliableSequenced ||
_reliability == Reliability.ReliableSequenced ||
_reliability == Reliability.ReliableOrdered ||
_reliability == Reliability.ReliableOrderedWithAckReceipt
)
{
_orderingIndex = ReadLittle();
_orderingChannel = ReadByte(); // flags
}
else
{
_orderingIndex = 0;
_orderingChannel = 0;
}
if (_hasSplit)
{
_splitPacketCount = ReadInt();
_splitPacketId = ReadShort();
_splitPacketIndex = ReadInt();
}
else
{
_splitPacketCount = -1;
_splitPacketId = -1;
_splitPacketIndex = -1;
}
// Slurp the payload
MessageLength = (int)Math.Ceiling((((double)dataBitLength) / 8));
byte[] internalBuffer = ReadBytes(MessageLength);
if (_hasSplit)
{
//Log.Debug("Recieve split\n" + HexDump(internalBuffer));
SplitPartPackage splitPartPackage = SplitPartPackage.CreateObject();
splitPartPackage.Id = internalBuffer[0];
splitPartPackage.Message = internalBuffer;
Messages.Add(splitPartPackage);
return;
}
byte id = internalBuffer[0];
if (id == 0x8e)
{
id = internalBuffer[1];
}
Package package = PackageFactory.CreatePackage(id, internalBuffer) ?? new UnknownPackage(id, internalBuffer);
package.DatagramSequenceNumber = _datagramSequenceNumber;
package.ReliableMessageNumber = _reliableMessageNumber;
package.OrderingChannel = _orderingChannel;
package.OrderingIndex = _orderingIndex;
if (!(package is McpeBatch))
{
Log.Debug($"Raw: {package.DatagramSequenceNumber} {package.ReliableMessageNumber} {package.OrderingIndex} {package.GetType().Name} 0x{package.Id:x2} \n{HexDump(internalBuffer)}");
}
Messages.Add(package);
if (MessageLength != internalBuffer.Length)
{
Debug.WriteLine("Missmatch of requested lenght, and actual read lenght");
}
}
}
/// <summary>
/// Processes a message.
/// </summary>
/// <param name="receiveBytes">The received bytes.</param>
/// <param name="senderEndpoint">The sender's endpoint.</param>
/// <exception cref="System.Exception">Receive ERROR, NAK in wrong place</exception>
private void ProcessMessage(byte[] receiveBytes, IPEndPoint senderEndpoint)
{
byte msgId = receiveBytes[0];
if (msgId == 0xFE)
{
Log.WarnFormat("A query detected from: {0}", senderEndpoint.Address);
HandleQuery(receiveBytes, senderEndpoint);
}
else if (msgId <= (byte) DefaultMessageIdTypes.ID_USER_PACKET_ENUM)
{
DefaultMessageIdTypes msgIdType = (DefaultMessageIdTypes) msgId;
Package message = PackageFactory.CreatePackage(msgId, receiveBytes);
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 = new UnconnectedPong
{
serverId = 22345,
pingId = incoming.pingId /*incoming.pingId*/,
serverName = string.Format(@"MCPE;{0};27;0.11.1;{1};{2}", Motd, _playerSessions.Count, 1000)
};
var data = packet.Encode();
TraceSend(packet);
SendData(data, senderEndpoint, new object());
break;
}
case DefaultMessageIdTypes.ID_OPEN_CONNECTION_REQUEST_1:
{
OpenConnectionRequest1 incoming = (OpenConnectionRequest1) message;
_isPerformanceTest = _isPerformanceTest || incoming.raknetProtocolVersion == byte.MaxValue;
var packet = new OpenConnectionReply1
{
serverGuid = 12345,
mtuSize = incoming.mtuSize,
serverHasSecurity = 0
};
var data = packet.Encode();
TraceSend(packet);
SendData(data, senderEndpoint, new object());
break;
}
case DefaultMessageIdTypes.ID_OPEN_CONNECTION_REQUEST_2:
{
OpenConnectionRequest2 incoming = (OpenConnectionRequest2) message;
Log.WarnFormat("New connection from: {0} {1}", senderEndpoint.Address, incoming.clientUdpPort);
var packet = new OpenConnectionReply2
{
serverGuid = 12345,
mtuSize = incoming.mtuSize,
doSecurityAndHandshake = new byte[0]
};
PlayerNetworkSession session = null;
lock (_playerSessions)
{
if (_playerSessions.ContainsKey(senderEndpoint))
{
PlayerNetworkSession value;
_playerSessions.TryRemove(senderEndpoint, out value);
value.Player.HandleDisconnectionNotification();
Log.Info("Removed ghost");
}
Player player = PlayerFactory.CreatePlayer(this, senderEndpoint, _levels[_random.Next(0, _levels.Count)], incoming.mtuSize);
session = new PlayerNetworkSession(player, senderEndpoint);
session.LastUpdatedTime = DateTime.UtcNow;
session.Mtuize = incoming.mtuSize;
_playerSessions.TryAdd(senderEndpoint, session);
}
var data = packet.Encode();
TraceSend(packet);
SendData(data, senderEndpoint, session.SyncRoot);
break;
}
default:
Log.ErrorFormat("Receive unexpected packet with ID: {0} (0x{0:x2}) from {1}", msgId, senderEndpoint.Address);
break;
}
if (message != null)
{
message.PutPool();
}
else
{
Log.ErrorFormat("Receive unexpected packet with ID: {0} (0x{0:x2}) from {1}", msgId, senderEndpoint.Address);
}
}
else
{
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();
package.Decode(receiveBytes);
List<Package> messages = package.Messages;
if (messages.Count == 1)
{
McpeBatch batch = messages.First() as McpeBatch;
if (batch != null)
{
messages = new List<Package>();
// 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));
}
}
}
// 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(senderEndpoint, package._datagramSequenceNumber);
}
PlayerNetworkSession playerSession;
if (_playerSessions.TryGetValue(senderEndpoint, out playerSession))
{
foreach (var message in messages)
{
if (message is 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++)
{
byte[] buf = spPackets[i].Message;
stream.Write(buf, 0, buf.Length);
}
byte[] buffer = stream.ToArray();
var fullMessage = PackageFactory.CreatePackage(buffer[0], buffer) ?? new UnknownPackage(buffer[0], buffer);
HandlePackage(fullMessage, playerSession);
}
continue;
}
message.Timer.Restart();
HandlePackage(message, playerSession);
message.PutPool();
}
}
package.PutPool();
}
else if (header.isACK && header.isValid)
{
HandleAck(receiveBytes, senderEndpoint);
}
else if (header.isNAK && header.isValid)
{
HandleNak(receiveBytes, senderEndpoint);
}
else if (!header.isValid)
{
Log.Warn("!!!! ERROR, Invalid header !!!!!");
}
}
}
/// <summary>
/// Processes a message.
/// </summary>
/// <param name="receiveBytes">The received bytes.</param>
/// <param name="senderEndpoint">The sender's endpoint.</param>
/// <exception cref="System.Exception">Receive ERROR, NAK in wrong place</exception>
private void ProcessMessage(byte[] receiveBytes, IPEndPoint senderEndpoint)
{
byte msgId = receiveBytes[0];
if (msgId <= (byte) DefaultMessageIdTypes.ID_USER_PACKET_ENUM)
{
DefaultMessageIdTypes msgIdType = (DefaultMessageIdTypes) msgId;
Package message = PackageFactory.CreatePackage(msgId, receiveBytes);
if (message == null) return;
TraceReceive(message);
switch (msgIdType)
{
case DefaultMessageIdTypes.ID_UNCONNECTED_PONG:
{
UnconnectedPong incoming = (UnconnectedPong) message;
HaveServer = true;
SendOpenConnectionRequest1();
break;
}
case DefaultMessageIdTypes.ID_OPEN_CONNECTION_REPLY_1:
{
OpenConnectionReply1 incoming = (OpenConnectionReply1) message;
_mtuSize = incoming.mtuSize;
//if (incoming.mtuSize < _mtuSize) throw new Exception("Error:" + incoming.mtuSize);
SendOpenConnectionRequest2();
break;
}
case DefaultMessageIdTypes.ID_OPEN_CONNECTION_REPLY_2:
{
OpenConnectionReply2 incoming = (OpenConnectionReply2) message;
//_mtuSize = incoming.mtuSize;
SendConnectionRequest();
break;
}
}
}
else
{
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();
ConnectedPackage package = new ConnectedPackage();
package.Decode(receiveBytes);
header = package._datagramHeader;
//Log.Debug($"> Datagram #{header.datagramSequenceNumber}, {package._hasSplit}, {package._splitPacketId}, {package._reliability}, {package._reliableMessageNumber}, {package._sequencingIndex}, {package._orderingChannel}, {package._orderingIndex}");
var messages = package.Messages;
//Reliability reliability = package._reliability;
//if (reliability == Reliability.Reliable
// || reliability == Reliability.ReliableSequenced
// || reliability == Reliability.ReliableOrdered
// )
{
if (header.datagramSequenceNumber == 1000)
{
Log.Error("Datagram 1000 ignored");
}
else
{
// Send ACK
Acks ack = new Acks();
ack.acks.Add(package._datagramSequenceNumber.IntValue());
byte[] data = ack.Encode();
//Log.Info("Send ACK #" + package._datagramSequenceNumber.IntValue());
SendData(data, senderEndpoint);
}
}
//if (LoginSent) return; //HACK
foreach (var message in messages)
{
if (message is SplitPartPackage)
{
lock (Session.SyncRoot)
{
HandleSplitMessage(Session, package, (SplitPartPackage) message);
}
continue;
}
message.Timer.Restart();
HandlePackage(message);
message.PutPool();
}
//package.PutPool();
}
else if (header.isPacketPair)
{
Log.Warn("header.isPacketPair");
}
else if (header.isACK && header.isValid)
{
HandleAck(receiveBytes, senderEndpoint);
}
else if (header.isNAK && header.isValid)
{
Nak nak = new Nak();
nak.Decode(receiveBytes);
HandleNak(receiveBytes, senderEndpoint);
}
else if (!header.isValid)
{
Log.Warn("!!!! ERROR, Invalid header !!!!!");
}
else
{
Log.Warn("!! WHAT THE F");
}
}
}
/// <summary>
/// Processes a message.
/// </summary>
/// <param name="receiveBytes">The received bytes.</param>
/// <param name="senderEndpoint">The sender's endpoint.</param>
/// <exception cref="System.Exception">Receive ERROR, NAK in wrong place</exception>
private void ProcessMessage(byte[] receiveBytes, IPEndPoint senderEndpoint)
{
//_serverEndpoint = senderEndpoint;
byte msgId = receiveBytes[0];
if (msgId <= (byte) DefaultMessageIdTypes.ID_USER_PACKET_ENUM)
{
DefaultMessageIdTypes msgIdType = (DefaultMessageIdTypes) msgId;
Package message = PackageFactory.CreatePackage(msgId, receiveBytes);
if (message == null) return;
TraceReceive(message);
switch (msgIdType)
{
case DefaultMessageIdTypes.ID_UNCONNECTED_PONG:
{
//Thread.Sleep(50);
UnconnectedPong incoming = (UnconnectedPong) message;
SendOpenConnectionRequest1();
break;
}
case DefaultMessageIdTypes.ID_OPEN_CONNECTION_REPLY_1:
{
//Thread.Sleep(50);
OpenConnectionReply1 incoming = (OpenConnectionReply1) message;
if (incoming.mtuSize < _mtuSize) throw new Exception("Error:" + incoming.mtuSize);
SendOpenConnectionRequest2();
break;
}
case DefaultMessageIdTypes.ID_OPEN_CONNECTION_REPLY_2:
{
OpenConnectionReply2 incoming = (OpenConnectionReply2) message;
//Thread.Sleep(50);
//_mtuSize = incoming.mtuSize;
SendConnectionRequest();
break;
}
case DefaultMessageIdTypes.ID_CONNECTION_REQUEST_ACCEPTED:
{
//Thread.Sleep(50);
SendNewIncomingConnection();
var t1 = new Timer(state => SendConnectedPing(), null, 0, 5000);
//Thread.Sleep(50);
SendLogin("Client12");
break;
}
}
}
else
{
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();
package.Decode(receiveBytes);
Log.Debug(">\tReceive Datagram #" + package._datagramSequenceNumber.IntValue());
var messages = package.Messages;
//Log.Debug("Received package: #" + package._datagramSequenceNumber.IntValue());
Reliability reliability = package._reliability;
//Log.InfoFormat("Reliability: {0}", reliability);
//if (reliability == Reliability.Reliable
// || reliability == Reliability.ReliableSequenced
// || reliability == Reliability.ReliableOrdered
// )
{
// Send ACK
Acks ack = new Acks();
ack.acks.Add(package._datagramSequenceNumber.IntValue());
byte[] data = ack.Encode();
//Log.Debug("<\tSend ACK on #" + package._datagramSequenceNumber.IntValue());
SendData(data, senderEndpoint);
}
foreach (var message in messages)
{
if (message is SplitPartPackage)
{
SplitPartPackage splitMessage = message as SplitPartPackage;
int spId = package._splitPacketId;
int spIdx = package._splitPacketIndex;
int spCount = package._splitPacketCount;
Log.DebugFormat("Got split package {2} (of {0}) for split ID: {1}", spCount, spId, spIdx);
if (!_splits.ContainsKey(spId))
{
_splits[spId] = new SplitPartPackage[spCount];
}
else
{
Log.WarnFormat("Resent split package {2} (of {0}) for split ID: {1}", spCount, spId, spIdx);
}
SplitPartPackage[] spPackets = _splits[spId];
spPackets[spIdx] = splitMessage;
bool haveEmpty = false;
for (int i = 0; i < spPackets.Length; i++)
{
haveEmpty = haveEmpty || spPackets[i] == null;
}
if (!haveEmpty)
{
Log.WarnFormat("Got all {0} split packages for split ID: {1}", spCount, spId);
MemoryStream stream = new MemoryStream();
for (int i = 0; i < spPackets.Length; i++)
{
byte[] buf = spPackets[i].Message;
stream.Write(buf, 0, buf.Length);
}
try
{
byte[] buffer = stream.ToArray();
var fullMessage = PackageFactory.CreatePackage(buffer[0], buffer) ?? new UnknownPackage(buffer[0], buffer);
Log.Debug("Processing split-message");
HandlePackage(fullMessage, senderEndpoint);
fullMessage.PutPool();
}
catch (Exception e)
{
Log.Warn("When processing split-message", e);
}
}
message.PutPool();
return;
}
{
message.Timer.Restart();
HandlePackage(message, senderEndpoint);
//message.PutPool();
}
}
//package.PutPool();
}
else if (header.isPacketPair)
{
Log.Warn("header.isPacketPair");
}
else if (header.isACK && header.isValid)
{
HandleAck(receiveBytes, senderEndpoint);
}
else if (header.isNAK && header.isValid)
{
Nak nak = new Nak();
nak.Decode(receiveBytes);
Log.Warn("!!!! NAK !!!!!" + nak.sequenceNumber.IntValue());
HandleNak(receiveBytes, senderEndpoint);
}
else if (!header.isValid)
{
Log.Warn("!!!! ERROR, Invalid header !!!!!");
}
else
{
Log.Warn("!! WHAT THE F");
}
}
}
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 !!!!!");
}
}
}
protected override void DecodePacket()
{
Messages = new List <Packet>();
_buffer.Position = 0;
_datagramHeader = new DatagramHeader(ReadByte());
_datagramSequenceNumber = ReadLittle();
_datagramHeader.datagramSequenceNumber = _datagramSequenceNumber;
_hasSplit = false;
while (_buffer.Position < _buffer.Length)
{
if (_hasSplit)
{
Log.Warn("Reading second split message");
}
byte flags = ReadByte();
_reliability = (Reliability)((flags & Convert.ToByte("011100000", 2)) >> 5);
_hasSplit = ((flags & Convert.ToByte("00010000", 2)) > 0);
short dataBitLength = ReadShort(true);
if (_reliability == Reliability.Reliable ||
_reliability == Reliability.ReliableSequenced ||
_reliability == Reliability.ReliableOrdered
)
{
_reliableMessageNumber = ReadLittle();
}
else
{
_reliableMessageNumber = -1;
}
if (_reliability == Reliability.UnreliableSequenced ||
_reliability == Reliability.ReliableSequenced
)
{
_sequencingIndex = ReadLittle();
}
else
{
_sequencingIndex = -1;
}
if (_reliability == Reliability.UnreliableSequenced ||
_reliability == Reliability.ReliableSequenced ||
_reliability == Reliability.ReliableOrdered ||
_reliability == Reliability.ReliableOrderedWithAckReceipt
)
{
_orderingIndex = ReadLittle();
_orderingChannel = ReadByte(); // flags
}
else
{
_orderingIndex = 0;
_orderingChannel = 0;
}
if (_hasSplit)
{
_splitPacketCount = ReadInt(true);
_splitPacketId = ReadShort(true);
_splitPacketIndex = ReadInt(true);
}
else
{
_splitPacketCount = -1;
_splitPacketId = -1;
_splitPacketIndex = -1;
}
// Slurp the payload
MessageLength = (int)Math.Ceiling((((double)dataBitLength) / 8));
byte[] internalBuffer = ReadBytes(MessageLength);
if (_hasSplit)
{
SplitPartPacket splitPartPacket = SplitPartPacket.CreateObject();
splitPartPacket.DatagramSequenceNumber = _datagramSequenceNumber;
splitPartPacket.Reliability = _reliability;
splitPartPacket.ReliableMessageNumber = _reliableMessageNumber;
splitPartPacket.OrderingChannel = _orderingChannel;
splitPartPacket.OrderingIndex = _orderingIndex;
splitPartPacket.SplitId = _splitPacketId;
splitPartPacket.SplitCount = _splitPacketCount;
splitPartPacket.SplitIdx = _splitPacketIndex;
splitPartPacket.Id = internalBuffer[0];
splitPartPacket.Message = internalBuffer;
Messages.Add(splitPartPacket);
if (Log.IsDebugEnabled && _buffer.Position < _buffer.Length)
{
Log.Debug($"Got split message, but more to read {_buffer.Length - _buffer.Position}");
}
continue;
}
byte id = internalBuffer[0];
Packet packet = PacketFactory.Create(id, internalBuffer, "raknet") ?? new UnknownPacket(id, internalBuffer);
packet.DatagramSequenceNumber = _datagramSequenceNumber;
packet.Reliability = _reliability;
packet.ReliableMessageNumber = _reliableMessageNumber;
packet.OrderingChannel = _orderingChannel;
packet.OrderingIndex = _orderingIndex;
//if (!(package is McpeBatch)) Log.Debug($"Raw: {package.DatagramSequenceNumber} {package.ReliableMessageNumber} {package.OrderingIndex} {package.GetType().Name} 0x{package.Id:x2} \n{HexDump(internalBuffer)}");
Messages.Add(packet);
if (Log.IsDebugEnabled && MessageLength != internalBuffer.Length)
{
Log.Debug("Missmatch of requested lenght, and actual read lenght");
}
}
}
public void EncapsulatedHeaderTest()
{
DatagramHeader header = new DatagramHeader(0x8c);
Assert.AreEqual(true, header.isValid);
Assert.AreEqual(false, header.isACK);
Assert.AreEqual(false, header.isNAK);
Assert.AreEqual(false, header.isPacketPair);
Assert.AreEqual(false, header.hasBAndAS);
Assert.AreEqual(true, header.isContinuousSend);
Assert.AreEqual(true, header.needsBAndAs);
}
/// <summary>
/// Processes a message.
/// </summary>
/// <param name="receiveBytes">The received bytes.</param>
/// <param name="senderEndpoint">The sender's endpoint.</param>
/// <exception cref="System.Exception">Receive ERROR, NAK in wrong place</exception>
private void ProcessMessage(byte[] receiveBytes, IPEndPoint senderEndpoint)
{
byte msgId = receiveBytes[0];
//Log.DebugFormat("Recieve {0} 0x{0:x2} len: {1}", msgId, receiveBytes.Length);
if (msgId <= (byte) DefaultMessageIdTypes.ID_USER_PACKET_ENUM)
{
DefaultMessageIdTypes msgIdType = (DefaultMessageIdTypes) msgId;
Package message = PackageFactory.CreatePackage(msgId, receiveBytes);
if (message == null) return;
TraceReceive(message);
switch (msgIdType)
{
case DefaultMessageIdTypes.ID_UNCONNECTED_PONG:
{
UnconnectedPong incoming = (UnconnectedPong) message;
SendOpenConnectionRequest1();
break;
}
case DefaultMessageIdTypes.ID_OPEN_CONNECTION_REPLY_1:
{
OpenConnectionReply1 incoming = (OpenConnectionReply1) message;
_mtuSize = incoming.mtuSize;
//if (incoming.mtuSize < _mtuSize) throw new Exception("Error:" + incoming.mtuSize);
SendOpenConnectionRequest2();
break;
}
case DefaultMessageIdTypes.ID_OPEN_CONNECTION_REPLY_2:
{
OpenConnectionReply2 incoming = (OpenConnectionReply2) message;
//_mtuSize = incoming.mtuSize;
SendConnectionRequest();
break;
}
}
}
else
{
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();
ConnectedPackage package = new ConnectedPackage();
package.Decode(receiveBytes);
//Log.Debug(">\tReceive Datagram #" + package._datagramSequenceNumber.IntValue());
var messages = package.Messages;
//Reliability reliability = package._reliability;
//if (reliability == Reliability.Reliable
// || reliability == Reliability.ReliableSequenced
// || reliability == Reliability.ReliableOrdered
// )
{
// Send ACK
Acks ack = new Acks();
ack.acks.Add(package._datagramSequenceNumber.IntValue());
byte[] data = ack.Encode();
//Log.Info("Send ACK #" + package._datagramSequenceNumber.IntValue());
SendData(data, senderEndpoint);
}
//if (LoginSent) return; //HACK
foreach (var message in messages)
{
if (message is SplitPartPackage)
{
lock (Session.SyncRoot)
{
var splits = Session.Splits;
SplitPartPackage splitMessage = message as SplitPartPackage;
int spId = package._splitPacketId;
int spIdx = package._splitPacketIndex;
int spCount = package._splitPacketCount;
Log.DebugFormat("Got split package {2} (of {0}) for split ID: {1}", spCount, spId, spIdx);
if (!splits.ContainsKey(spId))
{
splits.Add(spId, new SplitPartPackage[spCount]);
}
SplitPartPackage[] spPackets = splits[spId];
if (spIdx < 0 || spIdx >= spPackets.Length)
{
Log.DebugFormat("Unexpeted split package {2} (of {0}) for split ID: {1}", spCount, spId, spIdx);
continue;
}
if (splitMessage.Message == null)
{
Log.DebugFormat("Empty split package");
continue;
}
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++)
{
byte[] buf = spPackets[i].Message;
stream.Write(buf, 0, buf.Length);
}
try
{
byte[] buffer = stream.ToArray();
Log.DebugFormat("Processing split-message 0x{1:x2}, lenght={0}", buffer.Length, buffer[0]);
Package fullMessage = PackageFactory.CreatePackage(buffer[0], buffer) ?? new UnknownPackage(buffer[0], buffer);
HandlePackage(fullMessage, senderEndpoint);
fullMessage.PutPool();
continue;
}
catch (Exception e)
{
Log.Error("When processing split-message", e);
}
}
message.PutPool();
continue;
}
}
else
{
message.Timer.Restart();
HandlePackage(message, senderEndpoint);
message.PutPool();
}
}
//package.PutPool();
}
else if (header.isPacketPair)
{
Log.Warn("header.isPacketPair");
}
else if (header.isACK && header.isValid)
{
HandleAck(receiveBytes, senderEndpoint);
}
else if (header.isNAK && header.isValid)
{
Nak nak = new Nak();
nak.Decode(receiveBytes);
HandleNak(receiveBytes, senderEndpoint);
}
else if (!header.isValid)
{
Log.Warn("!!!! ERROR, Invalid header !!!!!");
}
else
{
Log.Warn("!! WHAT THE F");
}
}
}