/// <summary>
/// Start the sending process.
/// </summary>
BinaryWriter BeginSend(Packet packet)
{
mBuffer = Buffer.Create();
BinaryWriter writer = mBuffer.BeginPacket(packet);
return(writer);
}
void OnEnable()
{
if (mRequest == null)
{
mRequest = Buffer.Create();
mRequest.BeginPacket(Packet.RequestServerList).Write(GameServer.gameID);
mRequest.EndPacket();
}
if (mRemoteAddress == null)
{
if (string.IsNullOrEmpty(remoteAddress))
{
mRemoteAddress = new IPEndPoint(IPAddress.Broadcast, remotePort);
}
else
{
mRemoteAddress = Tools.ResolveEndPoint(remoteAddress, remotePort);
}
if (mRemoteAddress == null)
{
mUdp.Error(new IPEndPoint(IPAddress.Loopback, mUdp.listeningPort), "Invalid address: " + remoteAddress + ":" + remotePort);
}
}
// Twice just in case the first try falls on a taken port
if (!mUdp.Start(Tools.randomPort)) mUdp.Start(Tools.randomPort);
}
/// <summary>
/// Close the connection.
/// </summary>
public void Close(bool notify)
{
stage = Stage.NotConnected;
name = "Guest";
data = null;
if (mReceiveBuffer != null)
{
mReceiveBuffer.Recycle();
mReceiveBuffer = null;
}
if (mSocket != null)
{
try
{
if (mSocket.Connected)
{
mSocket.Shutdown(SocketShutdown.Both);
}
mSocket.Close();
}
catch (System.Exception) {}
mSocket = null;
if (notify)
{
Buffer buffer = Buffer.Create();
buffer.BeginPacket(Packet.Disconnect);
buffer.EndTcpPacketWithOffset(4);
lock (mIn) mIn.Enqueue(buffer);
}
}
}
void Start()
{
if (mRequest == null)
{
mRequest = Buffer.Create();
mRequest.BeginPacket(Packet.RequestServerList).Write(GameServer.gameID);
mRequest.EndPacket();
}
if (mRemoteAddress == null)
{
mRemoteAddress = string.IsNullOrEmpty(remoteAddress) ?
new IPEndPoint(IPAddress.Broadcast, remotePort) :
Tools.ResolveEndPoint(remoteAddress, remotePort);
if (mRemoteAddress == null)
{
mUdp.Error(new IPEndPoint(IPAddress.Loopback, mUdp.listeningPort),
"Invalid address: " + remoteAddress + ":" + remotePort);
}
}
// Twice just in case the first try falls on a taken port
if (!mUdp.Start(Tools.randomPort, UdpProtocol.defaultBroadcastInterface))
{
mUdp.Start(Tools.randomPort, UdpProtocol.defaultBroadcastInterface);
}
}
/// <summary>
/// Send an empty packet to the target destination.
/// Can be used for NAT punch-through, or just to keep a UDP connection alive.
/// Empty packets are simply ignored.
/// </summary>
public void SendEmptyPacket(IPEndPoint ip)
{
Buffer buffer = Buffer.Create(false);
buffer.BeginPacket(Packet.Empty);
buffer.EndPacket();
Send(buffer, ip);
}
/// <summary>
/// Add an error packet to the incoming queue.
/// </summary>
void RespondWithError(Buffer buffer, string error)
{
#if UNITY_EDITOR
Debug.LogError(error);
#endif
buffer.BeginPacket(Packet.Error).Write(error);
buffer.EndTcpPacketWithOffset(4);
lock (mIn) mIn.Enqueue(buffer);
}
/// <summary>
/// Close the connection.
/// </summary>
void CloseNotThreadSafe(bool notify)
{
Buffer.Recycle(mOut);
stage = Stage.NotConnected;
if (mSocket != null)
{
try
{
if (mSocket.Connected)
{
mSocket.Shutdown(SocketShutdown.Both);
}
mSocket.Close();
}
catch (System.Exception) {}
mSocket = null;
if (notify)
{
Buffer buffer = Buffer.Create();
buffer.BeginPacket(Packet.Disconnect);
buffer.EndTcpPacketWithOffset(4);
lock (mIn)
{
Buffer.Recycle(mIn);
mIn.Enqueue(buffer);
}
}
else
{
lock (mIn) Buffer.Recycle(mIn);
}
}
else if (notify && sendQueue != null)
{
sendQueue = null;
Buffer buffer = Buffer.Create();
buffer.BeginPacket(Packet.Disconnect);
buffer.EndTcpPacketWithOffset(4);
lock (mIn)
{
Buffer.Recycle(mIn);
mIn.Enqueue(buffer);
}
}
if (mReceiveBuffer != null)
{
mReceiveBuffer.Recycle();
mReceiveBuffer = null;
}
}
/// <summary>
/// Add an error packet to the incoming queue.
/// </summary>
public void Error(IPEndPoint ip, string error)
{
Buffer buffer = Buffer.Create();
buffer.BeginPacket(Packet.Error).Write(error);
buffer.EndTcpPacketWithOffset(4);
Datagram dg = new Datagram();
dg.buffer = buffer;
dg.ip = ip;
lock (mIn) mIn.Enqueue(dg);
}
/// <summary>
/// Write a complete ForwardToOthers packet to the specified buffer.
/// </summary>
public int WritePacket(int channelID, Buffer buffer, int offset)
{
BinaryWriter writer = buffer.BeginPacket(Packet.ForwardToOthers, offset);
writer.Write(0);
writer.Write(channelID);
writer.Write(uid);
if (functionID == 0)
{
writer.Write(functionName);
}
writer.Write(data.buffer, 0, data.size);
return(buffer.EndTcpPacketStartingAt(offset));
}
/// <summary>
/// Add an error packet to the incoming queue.
/// </summary>
public void Error(IPEndPoint ip, string error)
{
#if UNITY_EDITOR
UnityEngine.Debug.LogError(error);
#endif
Buffer buffer = Buffer.Create();
buffer.BeginPacket(Packet.Error).Write(error);
buffer.EndTcpPacketWithOffset(4);
Datagram dg = new Datagram();
dg.buffer = buffer;
dg.ip = ip;
lock (mIn) mIn.Enqueue(dg);
}
/// <summary>
/// Send periodic updates.
/// </summary>
void ThreadFunction()
{
mInternal = new IPEndPoint(Tools.localAddress, mGameServer.tcpPort);
mExternal = new IPEndPoint(Tools.externalAddress, mGameServer.tcpPort);
for (; ;)
{
#if !STANDALONE
if (TNManager.isPaused)
{
Thread.Sleep(500);
continue;
}
#endif
long time = DateTime.UtcNow.Ticks / 10000;
if (mShutdown)
{
Buffer buffer = Buffer.Create();
BinaryWriter writer = buffer.BeginPacket(Packet.RequestRemoveServer);
writer.Write(GameServer.gameID);
Tools.Serialize(writer, mInternal);
Tools.Serialize(writer, mExternal);
buffer.EndPacket();
mUdp.Send(buffer, mRemoteAddress);
buffer.Recycle();
mThread = null;
break;
}
if (mNextSend < time && mGameServer != null)
{
mNextSend = time + 3000;
Buffer buffer = Buffer.Create();
var writer = buffer.BeginPacket(Packet.RequestAddServer);
writer.Write(GameServer.gameID);
writer.Write(mGameServer.name);
writer.Write((short)mGameServer.playerCount);
Tools.Serialize(writer, mInternal);
Tools.Serialize(writer, mExternal);
buffer.EndPacket();
mUdp.Send(buffer, mRemoteAddress);
buffer.Recycle();
}
try { Thread.Sleep(10); }
catch (System.Threading.ThreadInterruptedException) { return; }
}
}
/// <summary>
/// Send periodic updates.
/// </summary>
void ThreadFunction()
{
mInternal = new IPEndPoint(Tools.localAddress, mGameServer.tcpPort);
mExternal = new IPEndPoint(Tools.externalAddress, mGameServer.tcpPort);
for (; ;)
{
long time = DateTime.Now.Ticks / 10000;
if (mShutdown)
{
Buffer buffer = Buffer.Create();
BinaryWriter writer = buffer.BeginPacket(Packet.RequestRemoveServer);
writer.Write(GameServer.gameID);
Tools.Serialize(writer, mInternal);
Tools.Serialize(writer, mExternal);
buffer.EndPacket();
mUdp.Send(buffer, mRemoteAddress);
buffer.Recycle();
mThread = null;
break;
}
if (mNextSend < time && mGameServer != null)
{
mNextSend = time + 3000;
Buffer buffer = Buffer.Create();
BinaryWriter writer = buffer.BeginPacket(Packet.RequestAddServer);
writer.Write(GameServer.gameID);
writer.Write(mGameServer.name);
writer.Write((short)mGameServer.playerCount);
Tools.Serialize(writer, mInternal);
Tools.Serialize(writer, mExternal);
buffer.EndPacket();
mUdp.Send(buffer, mRemoteAddress);
buffer.Recycle();
}
Thread.Sleep(10);
}
}
/// <summary>
/// Start the sending process.
/// </summary>
BinaryWriter BeginSend(Packet type)
{
mBuffer = Buffer.Create();
BinaryWriter writer = mBuffer.BeginPacket(type);
return writer;
}
/// <summary>
/// Channel joining process involves multiple steps. It's faster to perform them all at once.
/// </summary>
public void FinishJoiningChannel()
{
Buffer buffer = Buffer.Create();
// Step 2: Tell the player who else is in the channel
BinaryWriter writer = buffer.BeginPacket(Packet.ResponseJoiningChannel);
{
writer.Write(channel.id);
writer.Write((short)channel.players.size);
for (int i = 0; i < channel.players.size; ++i)
{
TcpPlayer tp = channel.players[i];
writer.Write(tp.id);
writer.Write(string.IsNullOrEmpty(tp.name) ? "Guest" : tp.name);
}
}
// End the first packet, but remember where it ended
int offset = buffer.EndPacket();
// Step 3: Inform the player of who is hosting
if (channel.host == null)
{
channel.host = this;
}
buffer.BeginPacket(Packet.ResponseSetHost, offset);
writer.Write(channel.host.id);
offset = buffer.EndTcpPacketStartingAt(offset);
// Step 4: Send the channel's data
if (!string.IsNullOrEmpty(channel.data))
{
buffer.BeginPacket(Packet.ResponseSetChannelData, offset);
writer.Write(channel.data);
offset = buffer.EndTcpPacketStartingAt(offset);
}
// Step 5: Inform the player of what level we're on
buffer.BeginPacket(Packet.ResponseLoadLevel, offset);
writer.Write(string.IsNullOrEmpty(channel.level) ? "" : channel.level);
offset = buffer.EndTcpPacketStartingAt(offset);
// Step 6: Send the list of objects that have been created
for (int i = 0; i < channel.created.size; ++i)
{
Channel.CreatedObject obj = channel.created.buffer[i];
buffer.BeginPacket(Packet.ResponseCreate, offset);
writer.Write(obj.playerID);
writer.Write(obj.objectID);
writer.Write(obj.uniqueID);
writer.Write(obj.buffer.buffer, obj.buffer.position, obj.buffer.size);
offset = buffer.EndTcpPacketStartingAt(offset);
}
// Step 7: Send the list of objects that have been destroyed
if (channel.destroyed.size != 0)
{
buffer.BeginPacket(Packet.ResponseDestroy, offset);
writer.Write((ushort)channel.destroyed.size);
for (int i = 0; i < channel.destroyed.size; ++i)
{
writer.Write(channel.destroyed.buffer[i]);
}
offset = buffer.EndTcpPacketStartingAt(offset);
}
// Step 8: Send all buffered RFCs to the new player
for (int i = 0; i < channel.rfcs.size; ++i)
{
Buffer rfcBuff = channel.rfcs[i].buffer;
rfcBuff.BeginReading();
buffer.BeginWriting(offset);
writer.Write(rfcBuff.buffer, rfcBuff.position, rfcBuff.size);
offset = buffer.EndWriting();
}
// Step 9: The join process is now complete
buffer.BeginPacket(Packet.ResponseJoinChannel, offset);
writer.Write(true);
offset = buffer.EndTcpPacketStartingAt(offset);
// Send the entire buffer
SendTcpPacket(buffer);
buffer.Recycle();
}
/// <summary>
/// Process a single incoming packet. Returns whether we should keep processing packets or not.
/// </summary>
bool ProcessPacket(Buffer buffer, IPEndPoint ip)
{
mPacketSource = ip;
BinaryReader reader = buffer.BeginReading();
if (buffer.size == 0)
{
return(true);
}
int packetID = reader.ReadByte();
Packet response = (Packet)packetID;
// Verification step must be passed first
if (response == Packet.ResponseID || mTcp.stage == TcpProtocol.Stage.Verifying)
{
if (mTcp.VerifyResponseID(response, reader))
{
mTimeDifference = reader.ReadInt64() - (System.DateTime.UtcNow.Ticks / 10000);
#if !UNITY_WEBPLAYER
if (mUdp.isActive)
{
// If we have a UDP listener active, tell the server
BeginSend(Packet.RequestSetUDP).Write((ushort)mUdp.listeningPort);
EndSend();
}
#endif
mCanPing = true;
if (onConnect != null)
{
onConnect(true, null);
}
}
return(true);
}
//#if !UNITY_EDITOR // DEBUG
// if (response != Packet.ResponsePing) Console.WriteLine("Client: " + response + " " + buffer.position + " of " + buffer.size + ((ip == null) ? " (TCP)" : " (UDP)"));
//#else
// if (response != Packet.ResponsePing) UnityEngine.Debug.Log("Client: " + response + " " + buffer.position + " of " + buffer.size + ((ip == null) ? " (TCP)" : " (UDP)"));
//#endif
OnPacket callback;
if (packetHandlers.TryGetValue((byte)response, out callback) && callback != null)
{
callback(response, reader, ip);
return(true);
}
switch (response)
{
case Packet.Empty: break;
case Packet.ForwardToAll:
case Packet.ForwardToOthers:
case Packet.ForwardToAllSaved:
case Packet.ForwardToOthersSaved:
case Packet.ForwardToHost:
case Packet.Broadcast:
{
if (onForwardedPacket != null)
{
onForwardedPacket(reader);
}
break;
}
case Packet.ForwardToPlayer:
{
// Skip the player ID
reader.ReadInt32();
if (onForwardedPacket != null)
{
onForwardedPacket(reader);
}
break;
}
case Packet.ForwardByName:
{
// Skip the player name
reader.ReadString();
if (onForwardedPacket != null)
{
onForwardedPacket(reader);
}
break;
}
case Packet.SyncPlayerData:
{
Player target = GetPlayer(reader.ReadInt32());
if (target != null)
{
target.data = reader.ReadObject();
if (onPlayerSync != null)
{
onPlayerSync(target);
}
}
break;
}
case Packet.ResponsePing:
{
int ping = (int)(mMyTime - mPingTime);
if (ip != null)
{
if (onPing != null && ip != null)
{
onPing(ip, ping);
}
}
else
{
mCanPing = true;
mPing = ping;
}
break;
}
case Packet.ResponseSetUDP:
{
#if !UNITY_WEBPLAYER
// The server has a new port for UDP traffic
ushort port = reader.ReadUInt16();
if (port != 0)
{
IPAddress ipa = new IPAddress(mTcp.tcpEndPoint.Address.GetAddressBytes());
mServerUdpEndPoint = new IPEndPoint(ipa, port);
// Send the first UDP packet to the server
if (mUdp.isActive)
{
mBuffer = Buffer.Create();
mBuffer.BeginPacket(Packet.RequestActivateUDP).Write(playerID);
mBuffer.EndPacket();
mUdp.Send(mBuffer, mServerUdpEndPoint);
mBuffer.Recycle();
mBuffer = null;
}
}
else
{
mServerUdpEndPoint = null;
}
#endif
break;
}
case Packet.ResponseJoiningChannel:
{
mIsInChannel = true;
mDictionary.Clear();
players.Clear();
mChannelID = reader.ReadInt32();
int count = reader.ReadInt16();
for (int i = 0; i < count; ++i)
{
Player p = new Player();
p.id = reader.ReadInt32();
p.name = reader.ReadString();
p.data = reader.ReadObject();
mDictionary.Add(p.id, p);
players.Add(p);
}
break;
}
case Packet.ResponseLoadLevel:
{
// Purposely return after loading a level, ensuring that all future callbacks happen after loading
if (onLoadLevel != null)
{
onLoadLevel(reader.ReadString());
}
return(false);
}
case Packet.ResponsePlayerLeft:
{
Player p = GetPlayer(reader.ReadInt32());
if (p != null)
{
mDictionary.Remove(p.id);
}
players.Remove(p);
if (onPlayerLeft != null)
{
onPlayerLeft(p);
}
break;
}
case Packet.ResponsePlayerJoined:
{
Player p = new Player();
p.id = reader.ReadInt32();
p.name = reader.ReadString();
p.data = reader.ReadObject();
mDictionary.Add(p.id, p);
players.Add(p);
if (onPlayerJoined != null)
{
onPlayerJoined(p);
}
break;
}
case Packet.ResponseSetHost:
{
mHost = reader.ReadInt32();
if (onSetHost != null)
{
onSetHost(isHosting);
}
break;
}
case Packet.ResponseSetChannelData:
{
mData = reader.ReadString();
if (onSetChannelData != null)
{
onSetChannelData(mData);
}
break;
}
case Packet.ResponseJoinChannel:
{
mIsInChannel = reader.ReadBoolean();
if (onJoinChannel != null)
{
onJoinChannel(mIsInChannel, mIsInChannel ? null : reader.ReadString());
}
break;
}
case Packet.ResponseLeaveChannel:
{
mData = "";
mChannelID = 0;
mIsInChannel = false;
mDictionary.Clear();
players.Clear();
if (onLeftChannel != null)
{
onLeftChannel();
}
break;
}
case Packet.ResponseRenamePlayer:
{
Player p = GetPlayer(reader.ReadInt32());
string oldName = p.name;
if (p != null)
{
p.name = reader.ReadString();
}
if (onRenamePlayer != null)
{
onRenamePlayer(p, oldName);
}
break;
}
case Packet.ResponseCreate:
{
if (onCreate != null)
{
int playerID = reader.ReadInt32();
ushort index = reader.ReadUInt16();
uint objID = reader.ReadUInt32();
onCreate(playerID, index, objID, reader);
}
break;
}
case Packet.ResponseDestroy:
{
if (onDestroy != null)
{
int count = reader.ReadUInt16();
for (int i = 0; i < count; ++i)
{
onDestroy(reader.ReadUInt32());
}
}
break;
}
case Packet.Error:
{
if (mTcp.stage != TcpProtocol.Stage.Connected && onConnect != null)
{
onConnect(false, reader.ReadString());
}
else if (onError != null)
{
onError(reader.ReadString());
}
break;
}
case Packet.Disconnect:
{
mData = "";
if (isInChannel && onLeftChannel != null)
{
onLeftChannel();
}
players.Clear();
mDictionary.Clear();
mTcp.Close(false);
mLoadFiles.Clear();
if (onDisconnect != null)
{
onDisconnect();
}
break;
}
case Packet.ResponseLoadFile:
{
string filename = reader.ReadString();
int size = reader.ReadInt32();
byte[] data = reader.ReadBytes(size);
OnLoadFile lfc = mLoadFiles.Pop();
if (lfc != null)
{
lfc(filename, data);
}
break;
}
}
return(true);
}
/// <summary>
/// Begin sending a new packet to the server.
/// </summary>
public BinaryWriter BeginSend(byte packetID)
{
mBuffer = Buffer.Create(false);
return mBuffer.BeginPacket(packetID);
}
/// <summary>
/// Add an error packet to the incoming queue.
/// </summary>
void Error(Buffer buffer, string error)
{
buffer.BeginPacket(Packet.Error).Write(error);
buffer.EndTcpPacketWithOffset(4);
lock (mIn) mIn.Enqueue(buffer);
}
/// <summary>
/// Process a single incoming packet. Returns whether we should keep processing packets or not.
/// </summary>
bool ProcessPacket(Buffer buffer, IPEndPoint ip)
{
mPacketSource = ip;
BinaryReader reader = buffer.BeginReading();
if (buffer.size == 0)
{
return(true);
}
int packetID = reader.ReadByte();
Packet response = (Packet)packetID;
#if DEBUG_PACKETS && !STANDALONE
if (response != Packet.ResponsePing && response != Packet.Broadcast)
{
UnityEngine.Debug.Log("Client: " + response + " (" + buffer.size + " bytes) " + ((ip == null) ? "(TCP)" : "(UDP)"));
}
#endif
// Verification step must be passed first
if (response == Packet.ResponseID || mTcp.stage == TcpProtocol.Stage.Verifying)
{
if (mTcp.VerifyResponseID(response, reader))
{
mTimeDifference = reader.ReadInt64() - (System.DateTime.UtcNow.Ticks / 10000);
#if !UNITY_WEBPLAYER
if (mUdp.isActive)
{
// If we have a UDP listener active, tell the server
BeginSend(Packet.RequestSetUDP).Write((ushort)mUdp.listeningPort);
EndSend();
}
#endif
mCanPing = true;
if (onConnect != null)
{
onConnect(true, null);
}
}
return(true);
}
OnPacket callback;
if (packetHandlers.TryGetValue((byte)response, out callback) && callback != null)
{
callback(response, reader, ip);
return(true);
}
switch (response)
{
case Packet.Empty: break;
case Packet.ForwardToAll:
case Packet.ForwardToOthers:
case Packet.ForwardToAllSaved:
case Packet.ForwardToOthersSaved:
case Packet.ForwardToHost:
case Packet.BroadcastAdmin:
case Packet.Broadcast:
{
packetSourceID = reader.ReadInt32();
int channelID = reader.ReadInt32();
if (onForwardedPacket != null)
{
onForwardedPacket(channelID, reader);
}
break;
}
case Packet.ForwardToPlayer:
{
packetSourceID = reader.ReadInt32();
reader.ReadInt32(); // Skip the target player ID
int channelID = reader.ReadInt32();
if (onForwardedPacket != null)
{
onForwardedPacket(channelID, reader);
}
break;
}
case Packet.ForwardByName:
{
packetSourceID = reader.ReadInt32();
reader.ReadString(); // Skip the player name
int channelID = reader.ReadInt32();
if (onForwardedPacket != null)
{
onForwardedPacket(channelID, reader);
}
break;
}
case Packet.ResponseSetPlayerData:
{
int pid = reader.ReadInt32();
Player target = GetPlayer(pid);
if (target != null)
{
string path = reader.ReadString();
DataNode node = target.Set(path, reader.ReadObject());
if (onSetPlayerData != null)
{
onSetPlayerData(target, path, node);
}
}
else
{
UnityEngine.Debug.LogError("Not found: " + pid);
}
break;
}
case Packet.ResponsePing:
{
int ping = (int)(mMyTime - mPingTime);
if (ip != null)
{
if (onPing != null && ip != null)
{
onPing(ip, ping);
}
}
else
{
mCanPing = true;
mPing = ping;
}
break;
}
case Packet.ResponseSetUDP:
{
#if !UNITY_WEBPLAYER
// The server has a new port for UDP traffic
ushort port = reader.ReadUInt16();
if (port != 0 && mTcp.tcpEndPoint != null)
{
IPAddress ipa = new IPAddress(mTcp.tcpEndPoint.Address.GetAddressBytes());
mServerUdpEndPoint = new IPEndPoint(ipa, port);
// Send the first UDP packet to the server
if (mUdp.isActive)
{
mBuffer = Buffer.Create();
mBuffer.BeginPacket(Packet.RequestActivateUDP).Write(playerID);
mBuffer.EndPacket();
mUdp.Send(mBuffer, mServerUdpEndPoint);
mBuffer.Recycle();
mBuffer = null;
}
}
else
{
mServerUdpEndPoint = null;
}
#endif
break;
}
case Packet.ResponseJoiningChannel:
{
int channelID = reader.ReadInt32();
int count = reader.ReadInt16();
Channel ch = GetChannel(channelID, true);
for (int i = 0; i < count; ++i)
{
int pid = reader.ReadInt32();
Player p = GetPlayer(pid, true);
if (reader.ReadBoolean())
{
p.name = reader.ReadString();
p.dataNode = reader.ReadDataNode();
}
ch.players.Add(p);
}
break;
}
case Packet.ResponseLoadLevel:
{
// Purposely return after loading a level, ensuring that all future callbacks happen after loading
int channelID = reader.ReadInt32();
string scene = reader.ReadString();
if (onLoadLevel != null)
{
onLoadLevel(channelID, scene);
}
return(false);
}
case Packet.ResponsePlayerJoined:
{
int channelID = reader.ReadInt32();
Channel ch = GetChannel(channelID);
if (ch != null)
{
Player p = GetPlayer(reader.ReadInt32(), true);
if (reader.ReadBoolean())
{
p.name = reader.ReadString();
p.dataNode = reader.ReadDataNode();
}
ch.players.Add(p);
if (onPlayerJoin != null)
{
onPlayerJoin(channelID, p);
}
}
break;
}
case Packet.ResponsePlayerLeft:
{
int channelID = reader.ReadInt32();
int playerID = reader.ReadInt32();
Channel ch = GetChannel(channelID);
if (ch != null)
{
Player p = ch.GetPlayer(playerID);
ch.players.Remove(p);
RebuildPlayerDictionary();
if (onPlayerLeave != null)
{
onPlayerLeave(channelID, p);
}
}
break;
}
case Packet.ResponseSetHost:
{
int channelID = reader.ReadInt32();
int hostID = reader.ReadInt32();
for (int i = 0; i < mChannels.size; ++i)
{
Channel ch = mChannels[i];
if (ch.id == channelID)
{
ch.host = GetPlayer(hostID);
if (onHostChanged != null)
{
onHostChanged(ch);
}
break;
}
}
break;
}
case Packet.ResponseSetChannelData:
{
int channelID = reader.ReadInt32();
Channel ch = GetChannel(channelID);
if (ch != null)
{
string path = reader.ReadString();
DataNode node = ch.Set(path, reader.ReadObject());
if (onSetChannelData != null)
{
onSetChannelData(ch, path, node);
}
}
break;
}
case Packet.ResponseJoinChannel:
{
int channelID = reader.ReadInt32();
bool success = reader.ReadBoolean();
string msg = success ? null : reader.ReadString();
// mJoining can contain -2 and -1 when joining random channels
if (!mJoining.Remove(channelID))
{
for (int i = 0; i < mJoining.size; ++i)
{
int id = mJoining[i];
if (id < 0)
{
mJoining.RemoveAt(i);
break;
}
}
}
#if UNITY_EDITOR
if (!success)
{
UnityEngine.Debug.LogError("ResponseJoinChannel: " + success + ", " + msg);
}
#endif
if (onJoinChannel != null)
{
onJoinChannel(channelID, success, msg);
}
break;
}
case Packet.ResponseLeaveChannel:
{
int channelID = reader.ReadInt32();
for (int i = 0; i < mChannels.size; ++i)
{
Channel ch = mChannels[i];
if (ch.id == channelID)
{
mChannels.RemoveAt(i);
break;
}
}
RebuildPlayerDictionary();
if (onLeaveChannel != null)
{
onLeaveChannel(channelID);
}
// Purposely exit after receiving a "left channel" notification so that other packets get handled in the next frame.
return(false);
}
case Packet.ResponseRenamePlayer:
{
Player p = GetPlayer(reader.ReadInt32());
string oldName = p.name;
if (p != null)
{
p.name = reader.ReadString();
}
if (onRenamePlayer != null)
{
onRenamePlayer(p, oldName);
}
break;
}
case Packet.ResponseCreateObject:
{
if (onCreate != null)
{
int playerID = reader.ReadInt32();
int channelID = reader.ReadInt32();
uint objID = reader.ReadUInt32();
onCreate(channelID, playerID, objID, reader);
}
break;
}
case Packet.ResponseDestroyObject:
{
if (onDestroy != null)
{
int channelID = reader.ReadInt32();
int count = reader.ReadUInt16();
for (int i = 0; i < count; ++i)
{
uint val = reader.ReadUInt32();
onDestroy(channelID, val);
}
}
break;
}
case Packet.ResponseTransferObject:
{
if (onTransfer != null)
{
int from = reader.ReadInt32();
int to = reader.ReadInt32();
uint id0 = reader.ReadUInt32();
uint id1 = reader.ReadUInt32();
onTransfer(from, to, id0, id1);
}
break;
}
case Packet.Error:
{
string err = reader.ReadString();
if (onError != null)
{
onError(err);
}
if (mTcp.stage != TcpProtocol.Stage.Connected && onConnect != null)
{
onConnect(false, err);
}
break;
}
case Packet.Disconnect:
{
if (onLeaveChannel != null)
{
while (mChannels.size > 0)
{
int index = mChannels.size - 1;
Channel ch = mChannels[index];
mChannels.RemoveAt(index);
onLeaveChannel(ch.id);
}
}
mChannels.Clear();
mGetChannelsCallbacks.Clear();
mDictionary.Clear();
mTcp.Close(false);
mLoadFiles.Clear();
mGetFiles.Clear();
mJoining.Clear();
mIsAdmin = false;
if (mLocalServer != null)
{
mLocalServer.localClient = null;
mLocalServer = null;
}
if (onDisconnect != null)
{
onDisconnect();
}
mConfig = new DataNode("Version", Player.version);
break;
}
case Packet.ResponseGetFileList:
{
string filename = reader.ReadString();
int size = reader.ReadInt32();
string[] files = null;
if (size > 0)
{
files = new string[size];
for (int i = 0; i < size; ++i)
{
files[i] = reader.ReadString();
}
}
OnGetFiles cb = null;
if (mGetFiles.TryGetValue(filename, out cb))
{
mGetFiles.Remove(filename);
}
if (cb != null)
{
try
{
cb(filename, files);
}
#if UNITY_EDITOR
catch (System.Exception ex)
{
Debug.LogError(ex.Message + ex.StackTrace);
}
#else
catch (System.Exception) {}
#endif
}
break;
}
case Packet.ResponseLoadFile:
{
string filename = reader.ReadString();
int size = reader.ReadInt32();
byte[] data = reader.ReadBytes(size);
OnLoadFile cb = null;
if (mLoadFiles.TryGetValue(filename, out cb))
{
mLoadFiles.Remove(filename);
}
if (cb != null)
{
try
{
cb(filename, data);
}
#if UNITY_EDITOR
catch (System.Exception ex)
{
Debug.LogError(ex.Message + ex.StackTrace);
}
#else
catch (System.Exception) {}
#endif
}
break;
}
case Packet.ResponseVerifyAdmin:
{
int pid = reader.ReadInt32();
Player p = GetPlayer(pid);
if (p == player)
{
mIsAdmin = true;
}
if (onSetAdmin != null)
{
onSetAdmin(p);
}
break;
}
case Packet.ResponseSetServerData:
{
string path = reader.ReadString();
object obj = reader.ReadObject();
if (obj != null)
{
DataNode node = mConfig.SetHierarchy(path, obj);
if (onSetServerData != null)
{
onSetServerData(path, node);
}
}
else
{
DataNode node = mConfig.RemoveHierarchy(path);
if (onSetServerData != null)
{
onSetServerData(path, node);
}
}
break;
}
case Packet.ResponseChannelList:
{
if (mGetChannelsCallbacks.Count != 0)
{
OnGetChannels cb = mGetChannelsCallbacks.Dequeue();
List <Channel.Info> channels = new List <Channel.Info>();
int count = reader.ReadInt32();
for (int i = 0; i < count; ++i)
{
Channel.Info info = new Channel.Info();
info.id = reader.ReadInt32();
info.players = reader.ReadUInt16();
info.limit = reader.ReadUInt16();
info.hasPassword = reader.ReadBoolean();
info.isPersistent = reader.ReadBoolean();
info.level = reader.ReadString();
info.data = reader.ReadDataNode();
channels.Add(info);
}
if (cb != null)
{
cb(channels);
}
}
break;
}
case Packet.ResponseLockChannel:
{
int channelID = reader.ReadInt32();
bool isLocked = reader.ReadBoolean();
Channel ch = GetChannel(channelID);
if (ch != null)
{
ch.isLocked = isLocked;
}
if (onLockChannel != null)
{
onLockChannel(channelID, isLocked);
}
break;
}
}
return(true);
}
/// <summary>
/// Begin sending a new packet to the server.
/// </summary>
public BinaryWriter BeginSend(byte packetID)
{
mBuffer = Buffer.Create(false);
return(mBuffer.BeginPacket(packetID));
}
/// <summary>
/// See if the received packet can be processed and split it up into different ones.
/// </summary>
bool ProcessBuffer(byte[] bytes, int offset, int byteCount)
{
if (offset + byteCount > bytes.Length)
{
LogError("ProcessBuffer(" + bytes.Length + " bytes, offset " + offset + ", count " + byteCount);
return(false);
}
if (mReceiveBuffer == null)
{
// Create a new packet buffer
mReceiveBuffer = Buffer.Create();
mReceiveBuffer.BeginWriting(false).Write(bytes, offset, byteCount);
mExpected = 0;
mOffset = 0;
}
else
{
// Append this data to the end of the last used buffer
mReceiveBuffer.BeginWriting(true).Write(bytes, offset, byteCount);
}
for (mAvailable = mReceiveBuffer.size - mOffset; mAvailable > 4;)
{
// Figure out the expected size of the packet
if (mExpected == 0)
{
mExpected = mReceiveBuffer.PeekInt(mOffset);
// "GET " -- HTTP GET request sent by a web browser
if (mExpected == 542393671)
{
if (httpGetSupport)
{
if (stage == Stage.Verifying || stage == Stage.WebBrowser)
{
stage = Stage.WebBrowser;
string request = Encoding.ASCII.GetString(mReceiveBuffer.buffer, mOffset, mAvailable);
mReceiveBuffer.BeginPacket(Packet.RequestHTTPGet).Write(request);
mReceiveBuffer.EndPacket();
mReceiveBuffer.BeginReading(4);
lock (mIn)
{
mIn.Enqueue(mReceiveBuffer);
mReceiveBuffer = null;
mExpected = 0;
mOffset = 0;
}
}
return(true);
}
mReceiveBuffer.Recycle();
mReceiveBuffer = null;
mExpected = 0;
mOffset = 0;
Disconnect();
return(false);
}
else if (mExpected < 0 || mExpected > 16777216)
{
#if UNITY_EDITOR
LogError("Malformed data packet: " + mOffset + ", " + mAvailable + " / " + mExpected);
var temp = new byte[mReceiveBuffer.size];
for (int i = 0; i < byteCount; ++i)
{
temp[i] = mReceiveBuffer.buffer[i];
}
var fn = "error_" + lastReceivedTime + ".full";
Tools.WriteFile(fn, temp);
Debug.Log("Packet saved as " + fn);
#else
LogError("Malformed data packet: " + mOffset + ", " + mAvailable + " / " + mExpected);
#endif
mReceiveBuffer.Recycle();
mReceiveBuffer = null;
mExpected = 0;
mOffset = 0;
Disconnect();
return(false);
}
}
// The first 4 bytes of any packet always contain the number of bytes in that packet
mAvailable -= 4;
// If the entire packet is present
if (mAvailable == mExpected)
{
// Reset the position to the beginning of the packet
mReceiveBuffer.BeginReading(mOffset + 4);
// This packet is now ready to be processed
lock (mIn)
{
mIn.Enqueue(mReceiveBuffer);
mReceiveBuffer = null;
mExpected = 0;
mOffset = 0;
}
break;
}
else if (mAvailable > mExpected)
{
// There is more than one packet. Extract this packet fully.
int realSize = mExpected + 4;
var temp = Buffer.Create();
// Extract the packet and move past its size component
var bw = temp.BeginWriting();
bw.Write(mReceiveBuffer.buffer, mOffset, realSize);
temp.BeginReading(4);
// This packet is now ready to be processed
lock (mIn)
{
mIn.Enqueue(temp);
// Skip this packet
mAvailable -= mExpected;
mOffset += realSize;
mExpected = 0;
}
}
else
{
break;
}
}
return(true);
}
/// <summary>
/// Channel joining process involves multiple steps. It's faster to perform them all at once.
/// </summary>
public void FinishJoiningChannel()
{
Buffer buffer = Buffer.Create();
// Step 2: Tell the player who else is in the channel
BinaryWriter writer = buffer.BeginPacket(Packet.ResponseJoiningChannel);
{
writer.Write(channel.id);
writer.Write((short)channel.players.size);
for (int i = 0; i < channel.players.size; ++i)
{
TcpPlayer tp = channel.players[i];
writer.Write(tp.id);
writer.Write(string.IsNullOrEmpty(tp.name) ? "Guest" : tp.name);
#if STANDALONE
if (tp.data == null)
{
writer.Write((byte)0);
}
else
{
writer.Write((byte[])tp.data);
}
#else
writer.WriteObject(tp.data);
#endif
}
}
// End the first packet, but remember where it ended
int offset = buffer.EndPacket();
// Step 3: Inform the player of who is hosting
if (channel.host == null)
{
channel.host = this;
}
buffer.BeginPacket(Packet.ResponseSetHost, offset);
writer.Write(channel.host.id);
offset = buffer.EndTcpPacketStartingAt(offset);
// Step 4: Send the channel's data
if (!string.IsNullOrEmpty(channel.data))
{
buffer.BeginPacket(Packet.ResponseSetChannelData, offset);
writer.Write(channel.data);
offset = buffer.EndTcpPacketStartingAt(offset);
}
// Step 5: Inform the player of what level we're on
buffer.BeginPacket(Packet.ResponseLoadLevel, offset);
writer.Write(string.IsNullOrEmpty(channel.level) ? "" : channel.level);
offset = buffer.EndTcpPacketStartingAt(offset);
// Step 6: Send the list of objects that have been created
for (int i = 0; i < channel.created.size; ++i)
{
Channel.CreatedObject obj = channel.created.buffer[i];
bool isPresent = false;
for (int b = 0; b < channel.players.size; ++b)
{
if (channel.players[b].id == obj.playerID)
{
isPresent = true;
break;
}
}
// If the previous owner is not present, transfer ownership to the host
if (!isPresent)
{
obj.playerID = channel.host.id;
}
buffer.BeginPacket(Packet.ResponseCreate, offset);
writer.Write(obj.playerID);
writer.Write(obj.objectIndex);
writer.Write(obj.objectID);
writer.Write(obj.buffer.buffer, obj.buffer.position, obj.buffer.size);
offset = buffer.EndTcpPacketStartingAt(offset);
}
// Step 7: Send the list of objects that have been destroyed
if (channel.destroyed.size != 0)
{
buffer.BeginPacket(Packet.ResponseDestroy, offset);
writer.Write((ushort)channel.destroyed.size);
for (int i = 0; i < channel.destroyed.size; ++i)
{
writer.Write(channel.destroyed.buffer[i]);
}
offset = buffer.EndTcpPacketStartingAt(offset);
}
// Step 8: Send all buffered RFCs to the new player
for (int i = 0; i < channel.rfcs.size; ++i)
{
Channel.RFC rfc = channel.rfcs[i];
buffer.BeginWriting(offset);
writer.Write(rfc.buffer.buffer, 0, rfc.buffer.size);
offset = buffer.EndWriting();
}
// Step 9: The join process is now complete
buffer.BeginPacket(Packet.ResponseJoinChannel, offset);
writer.Write(true);
offset = buffer.EndTcpPacketStartingAt(offset);
// Send the entire buffer
SendTcpPacket(buffer);
buffer.Recycle();
}
/// <summary>
/// Begin sending a new packet to the server.
/// </summary>
public BinaryWriter BeginSend(Packet type)
{
mBuffer = Buffer.Create(false);
return mBuffer.BeginPacket(type);
}
/// <summary>
/// Send periodic updates.
/// </summary>
void ThreadFunction()
{
mInternal = new IPEndPoint(Tools.localAddress, mGameServer.tcpPort);
mExternal = new IPEndPoint(Tools.externalAddress, mGameServer.tcpPort);
for (; ;)
{
long time = DateTime.UtcNow.Ticks / 10000;
if (mShutdown)
{
mTcp.Disconnect();
mThread = null;
#if STANDALONE
Tools.Print("TcpLobbyLink shut down");
#endif
break;
}
#if !STANDALONE
if (TNManager.isPaused)
{
Thread.Sleep(500);
continue;
}
#endif
Buffer buffer;
// Try to establish a connection
if (mGameServer != null && !mTcp.isConnected && !mTcp.isTryingToConnect && mNextConnect < time)
{
#if STANDALONE
Tools.Print("TcpLobbyLink is connecting to " + mRemoteAddress + "...");
#endif
mUpdateNeeded = true;
mNextConnect = time + 15000;
mTcp.Connect(mRemoteAddress);
}
while (mTcp.ReceivePacket(out buffer))
{
BinaryReader reader = buffer.BeginReading();
Packet response = (Packet)reader.ReadByte();
if (mTcp.stage == TcpProtocol.Stage.Verifying)
{
if (mTcp.VerifyResponseID(response, reader))
{
mTimeDifference = reader.ReadInt64() - (System.DateTime.UtcNow.Ticks / 10000);
mWasConnected = true;
#if STANDALONE
Tools.Print("TcpLobbyLink connection established");
#endif
}
else
{
#if STANDALONE
Tools.Print("TcpLobbyLink Error: Protocol version mismatch");
#endif
mThread = null;
return;
}
}
else if (response == Packet.RequestPing)
{
}
#if STANDALONE
else if (response == Packet.Error)
{
Tools.Print("TcpLobbyLink Error: " + reader.ReadString());
}
else if (response == Packet.Disconnect)
{
Tools.Print("TcpLobbyLink disconnected");
}
else
{
Tools.Print("TcpLobbyLink can't handle this packet: " + response);
}
#endif
buffer.Recycle();
}
// Automatically try to re-establish a connection on disconnect
if (mWasConnected && !mTcp.isConnected && !mTcp.isTryingToConnect)
{
mNextConnect = time + 5000;
mWasConnected = false;
}
else if (mGameServer != null && mTcp.isConnected && (mUpdateNeeded || mNextSend < time))
{
mUpdateNeeded = false;
mNextSend = time + 5000;
Buffer buff = Buffer.Create();
BinaryWriter writer = buff.BeginPacket(Packet.RequestAddServer);
writer.Write(GameServer.gameID);
writer.Write(mGameServer.name);
writer.Write((short)mGameServer.playerCount);
Tools.Serialize(writer, mInternal);
Tools.Serialize(writer, mExternal);
buff.EndPacket();
mTcp.SendTcpPacket(buff);
buff.Recycle();
}
try { Thread.Sleep(10); }
catch (System.Threading.ThreadInterruptedException) { return; }
}
}
/// <summary>
/// Begin sending a new packet to the server.
/// </summary>
public BinaryWriter BeginSend(Packet type)
{
mBuffer = Buffer.Create(false);
return(mBuffer.BeginPacket(type));
}
/// <summary>
/// Close the connection.
/// </summary>
void CloseNotThreadSafe(bool notify)
{
#if !MODDING
#if STANDALONE || UNITY_EDITOR
if (id != 0)
{
Tools.Log(name + " (" + address + "): Disconnected [" + id + "]");
}
#endif
Buffer.Recycle(mOut);
stage = Stage.NotConnected;
mSending = false;
if (mSocket != null || custom != null)
{
if (mSocket != null)
{
try
{
if (mSocket.Connected)
{
mSocket.Shutdown(SocketShutdown.Both);
}
mSocket.Close();
}
catch (System.Exception) { }
mSocket = null;
}
if (custom != null)
{
custom.OnDisconnect();
}
if (notify)
{
var buffer = Buffer.Create();
buffer.BeginPacket(Packet.Disconnect);
buffer.EndTcpPacketWithOffset(4);
lock (mIn)
{
Buffer.Recycle(mIn);
mIn.Enqueue(buffer);
}
}
else
{
lock (mIn) Buffer.Recycle(mIn);
}
}
else if (notify && sendQueue != null)
{
sendQueue = null;
Buffer buffer = Buffer.Create();
buffer.BeginPacket(Packet.Disconnect);
buffer.EndTcpPacketWithOffset(4);
lock (mIn)
{
Buffer.Recycle(mIn);
mIn.Enqueue(buffer);
}
}
if (mReceiveBuffer != null)
{
mReceiveBuffer.Recycle();
mReceiveBuffer = null;
}
if (onClose != null)
{
onClose(this);
}
id = 0;
#endif
}
/// <summary>
/// Add an error packet to the incoming queue.
/// </summary>
void Error(Buffer buffer, string error)
{
buffer.BeginPacket(Packet.Error).Write(error);
buffer.EndTcpPacketWithOffset(4);
lock (mIn) mIn.Enqueue(buffer);
}
/// <summary>
/// See if the received packet can be processed and split it up into different ones.
/// </summary>
bool ProcessBuffer(int bytes)
{
if (mReceiveBuffer == null)
{
// Create a new packet buffer
mReceiveBuffer = Buffer.Create();
mReceiveBuffer.BeginWriting(false).Write(mTemp, 0, bytes);
mExpected = 0;
mOffset = 0;
}
else
{
// Append this data to the end of the last used buffer
mReceiveBuffer.BeginWriting(true).Write(mTemp, 0, bytes);
}
for (int available = mReceiveBuffer.size - mOffset; available >= 4;)
{
// Figure out the expected size of the packet
if (mExpected == 0)
{
mExpected = mReceiveBuffer.PeekInt(mOffset);
// "GET " -- HTTP GET request sent by a web browser
if (mExpected == 542393671)
{
if (httpGetSupport)
{
if (stage == Stage.Verifying || stage == Stage.WebBrowser)
{
stage = Stage.WebBrowser;
string request = Encoding.ASCII.GetString(mReceiveBuffer.buffer, mOffset, available);
mReceiveBuffer.BeginPacket(Packet.RequestHTTPGet).Write(request);
mReceiveBuffer.EndPacket();
mReceiveBuffer.BeginReading(4);
lock (mIn) mIn.Enqueue(mReceiveBuffer);
mReceiveBuffer = null;
mExpected = 0;
mOffset = 0;
}
return(true);
}
mReceiveBuffer.Recycle();
mReceiveBuffer = null;
mExpected = 0;
mOffset = 0;
Disconnect();
return(false);
}
else if (mExpected < 0 || mExpected > 16777216)
{
#if UNITY_EDITOR
UnityEngine.Debug.LogError("Malformed data packet: " + mOffset + ", " + available + " / " + mExpected);
#else
Tools.LogError("Malformed data packet: " + mOffset + ", " + available + " / " + mExpected);
#endif
mReceiveBuffer.Recycle();
mReceiveBuffer = null;
mExpected = 0;
mOffset = 0;
Disconnect();
return(false);
}
}
// The first 4 bytes of any packet always contain the number of bytes in that packet
available -= 4;
// If the entire packet is present
if (available == mExpected)
{
// Reset the position to the beginning of the packet
mReceiveBuffer.BeginReading(mOffset + 4);
// This packet is now ready to be processed
lock (mIn) mIn.Enqueue(mReceiveBuffer);
mReceiveBuffer = null;
mExpected = 0;
mOffset = 0;
break;
}
else if (available > mExpected)
{
// There is more than one packet. Extract this packet fully.
int realSize = mExpected + 4;
Buffer temp = Buffer.Create();
// Extract the packet and move past its size component
BinaryWriter bw = temp.BeginWriting(false);
bw.Write(mReceiveBuffer.buffer, mOffset, realSize);
temp.BeginReading(4);
// This packet is now ready to be processed
lock (mIn) mIn.Enqueue(temp);
// Skip this packet
available -= mExpected;
mOffset += realSize;
mExpected = 0;
}
else
{
break;
}
}
return(true);
}
