/// <summary>
/// Send the specified packet. Marks the buffer as used.
/// </summary>
public void SendTcpPacket(Buffer buffer)
{
buffer.MarkAsUsed();
if (mSocket != null && mSocket.Connected)
{
buffer.BeginReading();
lock (mOut)
{
mOut.Enqueue(buffer);
if (mOut.Count == 1)
{
try
{
// If it's the first packet, let's begin the send process
mSocket.BeginSend(buffer.buffer, buffer.position, buffer.size, SocketFlags.None, OnSend, buffer);
}
catch (System.Exception ex)
{
Error(ex.Message);
Close(false);
Release();
}
}
}
}
else
{
buffer.Recycle();
}
}
/// <summary>
/// Create a new buffered remote function call.
/// </summary>
public void CreateRFC(uint inID, string funcName, Buffer buffer)
{
if (closed || buffer == null)
{
return;
}
Buffer b = Buffer.Create();
b.BeginWriting(false).Write(buffer.buffer, buffer.position, buffer.size);
b.BeginReading();
for (int i = 0; i < rfcs.size; ++i)
{
RFC r = rfcs[i];
if (r.uid == inID && r.functionName == funcName)
{
if (r.buffer != null)
{
r.buffer.Recycle();
}
r.buffer = b;
return;
}
}
RFC rfc = new RFC();
rfc.uid = inID;
rfc.buffer = b;
rfc.functionName = funcName;
rfcs.Add(rfc);
}
/// <summary>
/// Send the specified datagram.
/// </summary>
public void Send(Buffer buffer, IPEndPoint ip)
{
if (ip.Address.Equals(IPAddress.Broadcast))
{
Broadcast(buffer, ip.Port);
return;
}
buffer.MarkAsUsed();
if (mSocket != null)
{
buffer.BeginReading();
lock (mOut)
{
Datagram dg = new Datagram();
dg.buffer = buffer;
dg.ip = ip;
mOut.Enqueue(dg);
if (mOut.Count == 1)
{
// If it's the first datagram, begin the sending process
mSocket.BeginSendTo(buffer.buffer, buffer.position, buffer.size,
SocketFlags.None, ip, OnSend, null);
}
}
}
else
{
buffer.Recycle();
throw new InvalidOperationException("The socket is null. Did you forget to call UdpProtocol.Start()?");
}
}
/// <summary>
/// Send the specified datagram.
/// </summary>
public void Send(Buffer buffer, IPEndPoint ip)
{
#if !MODDING
if (ip.Address.Equals(IPAddress.Broadcast))
{
Broadcast(buffer, ip.Port);
}
else if (mSocket != null)
{
if (mSocket.AddressFamily != ip.AddressFamily)
{
#if UNITY_EDITOR
UnityEngine.Debug.LogError("UDP socket " + name + " (" + mSocket.AddressFamily + ") and the desired address " + ip.Address +
" (" + ip.AddressFamily + ") were started with different address families");
#else
Tools.LogError("UDP socket " + name + " (" + mSocket.AddressFamily + ") and the desired address " + ip.Address +
" (" + ip.AddressFamily + ") were started with different address families");
#endif
return;
}
buffer.MarkAsUsed();
buffer.BeginReading();
lock (mOut)
{
Datagram dg = new Datagram();
dg.buffer = buffer;
dg.ip = ip;
mOut.Enqueue(dg);
if (mOut.Count == 1)
{
try
{
// If it's the first datagram, begin the sending process
mSocket.BeginSendTo(buffer.buffer, buffer.position, buffer.size, SocketFlags.None, ip, OnSend, null);
}
catch (Exception ex)
{
Tools.LogError(ex.Message + "\n" + ex.StackTrace);
buffer.Recycle();
}
}
}
}
else
{
Tools.LogError("The socket is null. Did you forget to call UdpProtocol.Start()?");
}
#endif
}
/// <summary>
/// Verify the connection.
/// </summary>
public bool VerifyRequestID(Buffer buffer, bool uniqueID)
{
BinaryReader reader = buffer.BeginReading();
Packet request = (Packet)reader.ReadByte();
if (request == Packet.RequestID)
{
if (reader.ReadInt32() == version)
{
lock (mLock)
{
id = uniqueID ? ++mPlayerCounter : 0;
}
name = reader.ReadString();
if (buffer.size > 1)
{
#if STANDALONE
data = reader.ReadBytes(buffer.size);
#else
data = reader.ReadObject();
#endif
}
else
{
data = null;
}
stage = TcpProtocol.Stage.Connected;
BinaryWriter writer = BeginSend(Packet.ResponseID);
writer.Write(version);
writer.Write(id);
writer.Write((Int64)(System.DateTime.UtcNow.Ticks / 10000));
EndSend();
return(true);
}
else
{
BinaryWriter writer = BeginSend(Packet.ResponseID);
writer.Write(0);
EndSend();
Close(false);
}
}
return(false);
}
/// <summary>
/// Receive incoming data.
/// </summary>
void OnReceive(IAsyncResult result)
{
if (!isActive)
{
return;
}
int bytes = 0;
try
{
bytes = mSocket.EndReceiveFrom(result, ref mEndPoint);
}
catch (System.Exception ex)
{
Error(new IPEndPoint(Tools.localAddress, 0), ex.Message);
}
if (bytes > 4)
{
// This datagram is now ready to be processed
Buffer buffer = Buffer.Create();
buffer.BeginWriting(false).Write(mTemp, 0, bytes);
buffer.BeginReading(4);
// The 'endPoint', gets reassigned rather than updated.
Datagram dg = new Datagram();
dg.buffer = buffer;
dg.ip = (IPEndPoint)mEndPoint;
lock (mIn) mIn.Enqueue(dg);
}
// Queue up the next receive operation
if (mSocket != null)
{
mEndPoint = mDefaultEndPoint;
try
{
mSocket.BeginReceiveFrom(mTemp, 0, mTemp.Length, SocketFlags.None, ref mEndPoint, OnReceive, null);
}
catch (System.Exception ex)
{
Error(new IPEndPoint(Tools.localAddress, 0), ex.Message);
}
}
}
/// <summary>
/// Send the specified datagram.
/// </summary>
public void Send(Buffer buffer, IPEndPoint ip)
{
if (ip.Address.Equals(IPAddress.Broadcast))
{
Broadcast(buffer, ip.Port);
}
else if (mSocket != null)
{
buffer.MarkAsUsed();
buffer.BeginReading();
lock (mOut)
{
Datagram dg = new Datagram();
dg.buffer = buffer;
dg.ip = ip;
mOut.Enqueue(dg);
if (mOut.Count == 1)
{
try
{
// If it's the first datagram, begin the sending process
mSocket.BeginSendTo(buffer.buffer, buffer.position, buffer.size,
SocketFlags.None, ip, OnSend, null);
}
catch (Exception ex)
{
Tools.LogError(ex.Message + "\n" + ex.StackTrace);
buffer.Recycle();
}
}
}
}
else
{
Tools.LogError("The socket is null. Did you forget to call UdpProtocol.Start()?");
}
}
/// <summary>
/// Send the specified packet. Marks the buffer as used.
/// </summary>
public void SendTcpPacket(Buffer buffer)
{
buffer.MarkAsUsed();
if (mSocket != null && mSocket.Connected)
{
buffer.BeginReading();
lock (mOut)
{
mOut.Enqueue(buffer);
if (mOut.Count == 1)
{
// If it's the first packet, let's begin the send process
mSocket.BeginSend(buffer.buffer, buffer.position, buffer.size, SocketFlags.None, OnSend, buffer);
}
}
}
else
{
buffer.Recycle();
}
}
/// <summary>
/// Send the specified packet. Marks the buffer as used.
/// </summary>
public void SendTcpPacket(Buffer buffer)
{
buffer.MarkAsUsed();
if (mSocket != null && mSocket.Connected)
{
buffer.BeginReading();
lock (mOut)
{
mOut.Enqueue(buffer);
if (mOut.Count == 1)
{
try
{
// If it's the first packet, let's begin the send process
mSocket.BeginSend(buffer.buffer, buffer.position, buffer.size, SocketFlags.None, OnSend, buffer);
}
catch (System.Exception ex)
{
Error(ex.Message);
Close(false);
Release();
}
}
}
}
else buffer.Recycle();
}
/// <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);
}
/// <summary>
/// Send the specified packet. Marks the buffer as used.
/// </summary>
public void SendTcpPacket(Buffer buffer)
{
buffer.MarkAsUsed();
BinaryReader reader = buffer.BeginReading();
#if DEBUG_PACKETS && !STANDALONE
Packet packet = (Packet)buffer.PeekByte(4);
if (packet != Packet.RequestPing && packet != Packet.ResponsePing)
{
UnityEngine.Debug.Log("Sending: " + packet + " to " + name + " (" + (buffer.size - 5).ToString("N0") + " bytes)");
}
#endif
if (mSocket != null && mSocket.Connected)
{
lock (mOut)
{
mOut.Enqueue(buffer);
// If it's the first packet, let's begin the send process
if (mOut.Count == 1)
{
try
{
#if !UNITY_WINRT
mSocket.BeginSend(buffer.buffer, buffer.position, buffer.size, SocketFlags.None, OnSend, buffer);
#endif
}
catch (System.Exception ex)
{
mOut.Clear();
buffer.Recycle();
RespondWithError(ex);
CloseNotThreadSafe(false);
}
}
}
return;
}
if (sendQueue != null)
{
if (buffer.position != 0)
{
// Offline mode sends packets individually and they should not be reused
#if UNITY_EDITOR
Debug.LogWarning("Packet's position is " + buffer.position + " instead of 0. Potentially sending the same packet more than once. Ignoring...");
#endif
return;
}
// Skip the packet's size
int size = reader.ReadInt32();
if (size == buffer.size)
{
// Note that after this the buffer can no longer be used again as its offset is +4
lock (sendQueue) sendQueue.Enqueue(buffer);
return;
}
// Multi-part packet -- split it up into separate ones
lock (sendQueue)
{
for (;;)
{
byte[] bytes = reader.ReadBytes(size);
Buffer temp = Buffer.Create();
BinaryWriter writer = temp.BeginWriting();
writer.Write(size);
writer.Write(bytes);
temp.BeginReading(4);
temp.EndWriting();
sendQueue.Enqueue(temp);
if (buffer.size > 0)
{
size = reader.ReadInt32();
}
else
{
break;
}
}
}
}
buffer.Recycle();
}
/// <summary>
/// Process an incoming packet.
/// </summary>
bool ProcessPacket(Buffer buffer, IPEndPoint ip)
{
BinaryReader reader = buffer.BeginReading();
Packet request = (Packet)reader.ReadByte();
switch (request)
{
case Packet.RequestAddServer:
{
if (reader.ReadUInt16() != GameServer.gameID) return false;
ServerList.Entry ent = new ServerList.Entry();
ent.ReadFrom(reader);
if (ent.externalAddress.Address.Equals(IPAddress.None))
ent.externalAddress = ip;
mList.Add(ent, mTime);
#if STANDALONE
Console.WriteLine(ip + " added a server (" + ent.internalAddress + ", " + ent.externalAddress + ")");
#endif
return true;
}
case Packet.RequestRemoveServer:
{
if (reader.ReadUInt16() != GameServer.gameID) return false;
IPEndPoint internalAddress, externalAddress;
Tools.Serialize(reader, out internalAddress);
Tools.Serialize(reader, out externalAddress);
if (externalAddress.Address.Equals(IPAddress.None))
externalAddress = ip;
RemoveServer(internalAddress, externalAddress);
#if STANDALONE
Console.WriteLine(ip + " removed a server (" + internalAddress + ", " + externalAddress + ")");
#endif
return true;
}
case Packet.RequestServerList:
{
if (reader.ReadUInt16() != GameServer.gameID) return false;
mList.WriteTo(BeginSend(Packet.ResponseServerList));
EndSend(ip);
return true;
}
}
return false;
}
/// <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>
/// Send the specified datagram.
/// </summary>
public void Send(Buffer buffer, IPEndPoint ip)
{
if (ip.Address.Equals(IPAddress.Broadcast))
{
Broadcast(buffer, ip.Port);
return;
}
buffer.MarkAsUsed();
if (mSocket != null)
{
buffer.BeginReading();
lock (mOut)
{
Datagram dg = new Datagram();
dg.buffer = buffer;
dg.ip = ip;
mOut.Enqueue(dg);
if (mOut.Count == 1)
{
// If it's the first datagram, begin the sending process
mSocket.BeginSendTo(buffer.buffer, buffer.position, buffer.size,
SocketFlags.None, ip, OnSend, null);
}
}
}
else
{
buffer.Recycle();
throw new InvalidOperationException("The socket is null. Did you forget to call UdpProtocol.Start()?");
}
}
/// <summary>
/// Receive and process a single incoming packet.
/// Returns 'true' if a packet was received, 'false' otherwise.
/// </summary>
bool ProcessPlayerPacket(Buffer buffer, TcpPlayer player, bool reliable)
{
BinaryReader reader = buffer.BeginReading();
Packet request = (Packet)reader.ReadByte();
//#if UNITY_EDITOR // DEBUG
// if (request != Packet.RequestPing) UnityEngine.Debug.Log("Server: " + request + " " + buffer.position + " " + buffer.size);
//#else
// if (request != Packet.RequestPing) Console.WriteLine("Server: " + request + " " + buffer.position + " " + buffer.size);
//#endif
// If the player has not yet been verified, the first packet must be an ID request
if (player.stage == TcpProtocol.Stage.Verifying)
{
if (player.VerifyRequestID(request, reader, true))
{
mDictionaryID.Add(player.id, player);
if (lobbyLink != null) lobbyLink.SendUpdate(this);
if (onPlayerConnect != null) onPlayerConnect(player);
return true;
}
#if STANDALONE
Console.WriteLine(player.address + " has failed the verification step");
#endif
RemovePlayer(player);
return false;
}
switch (request)
{
case Packet.Empty:
{
break;
}
case Packet.Error:
{
Error(player, reader.ReadString());
break;
}
case Packet.Disconnect:
{
RemovePlayer(player);
break;
}
case Packet.RequestPing:
{
// Respond with a ping back
BeginSend(Packet.ResponsePing);
EndSend(true, player);
break;
}
case Packet.RequestSetUDP:
{
int port = reader.ReadUInt16();
if (port != 0)
{
IPAddress ip = new IPAddress(player.tcpEndPoint.Address.GetAddressBytes());
SetPlayerUdpEndPoint(player, new IPEndPoint(ip, port));
}
else SetPlayerUdpEndPoint(player, null);
// Let the player know if we are hosting an active UDP connection
ushort udp = mUdp.isActive ? (ushort)mUdp.listeningPort : (ushort)0;
BeginSend(Packet.ResponseSetUDP).Write(udp);
EndSend(true, player);
// Send an empty packet to the target player to open up UDP for communication
if (player.udpEndPoint != null) mUdp.SendEmptyPacket(player.udpEndPoint);
break;
}
case Packet.RequestJoinChannel:
{
// Join the specified channel
int channelID = reader.ReadInt32();
string pass = reader.ReadString();
string levelName = reader.ReadString();
bool persist = reader.ReadBoolean();
ushort playerLimit = reader.ReadUInt16();
// Join a random existing channel or create a new one
if (channelID == -2)
{
bool randomLevel = string.IsNullOrEmpty(levelName);
channelID = -1;
for (int i = 0; i < mChannels.size; ++i)
{
Channel ch = mChannels[i];
if (ch.isOpen && (randomLevel || levelName.Equals(ch.level)) &&
(string.IsNullOrEmpty(ch.password) || (ch.password == pass)))
{
channelID = ch.id;
break;
}
}
// If no level name has been specified and no channels were found, we're done
if (randomLevel && channelID == -1)
{
BinaryWriter writer = BeginSend(Packet.ResponseJoinChannel);
writer.Write(false);
writer.Write("No suitable channels found");
EndSend(true, player);
break;
}
}
// Join a random new channel
if (channelID == -1)
{
channelID = mRandom.Next(100000000);
for (int i = 0; i < 1000; ++i)
{
if (!ChannelExists(channelID)) break;
channelID = mRandom.Next(100000000);
}
}
if (player.channel == null || player.channel.id != channelID)
{
bool isNew;
Channel channel = CreateChannel(channelID, out isNew);
if (channel == null || !channel.isOpen)
{
BinaryWriter writer = BeginSend(Packet.ResponseJoinChannel);
writer.Write(false);
writer.Write("The requested channel is closed");
EndSend(true, player);
}
else if (isNew)
{
channel.password = pass;
channel.persistent = persist;
channel.level = levelName;
channel.playerLimit = playerLimit;
SendLeaveChannel(player, false);
SendJoinChannel(player, channel);
}
else if (string.IsNullOrEmpty(channel.password) || (channel.password == pass))
{
SendLeaveChannel(player, false);
SendJoinChannel(player, channel);
}
else
{
BinaryWriter writer = BeginSend(Packet.ResponseJoinChannel);
writer.Write(false);
writer.Write("Wrong password");
EndSend(true, player);
}
}
break;
}
case Packet.RequestSetName:
{
// Change the player's name
player.name = reader.ReadString();
BinaryWriter writer = BeginSend(Packet.ResponseRenamePlayer);
writer.Write(player.id);
writer.Write(player.name);
if (player.channel != null)
{
EndSend(true, player.channel, null);
}
else
{
EndSend(true, player);
}
break;
}
case Packet.RequestSaveFile:
{
string fileName = reader.ReadString();
byte[] data = reader.ReadBytes(reader.ReadInt32());
SaveFile(fileName, data);
break;
}
case Packet.RequestLoadFile:
{
string fn = reader.ReadString();
byte[] data = LoadFile(fn);
BinaryWriter writer = BeginSend(Packet.ResponseLoadFile);
writer.Write(fn);
if (data != null)
{
writer.Write(data.Length);
writer.Write(data);
}
else
{
writer.Write(0);
}
EndSend(true, player);
break;
}
case Packet.RequestDeleteFile:
{
DeleteFile(reader.ReadString());
break;
}
case Packet.RequestNoDelay:
{
player.noDelay = reader.ReadBoolean();
break;
}
case Packet.RequestChannelList:
{
BinaryWriter writer = BeginSend(Packet.ResponseChannelList);
int count = 0;
for (int i = 0; i < mChannels.size; ++i)
if (!mChannels[i].closed) ++count;
writer.Write(count);
for (int i = 0; i < mChannels.size; ++i)
{
Channel ch = mChannels[i];
if (!ch.closed)
{
writer.Write(ch.id);
writer.Write((ushort)ch.players.size);
writer.Write(ch.playerLimit);
writer.Write(!string.IsNullOrEmpty(ch.password));
writer.Write(ch.persistent);
writer.Write(ch.level);
writer.Write(ch.data);
}
}
EndSend(true, player);
break;
}
case Packet.RequestSetTimeout:
{
// The passed value is in seconds, but the stored value is in milliseconds (to avoid a math operation)
player.timeoutTime = reader.ReadInt32() * 1000;
break;
}
case Packet.ForwardToPlayer:
{
// Forward this packet to the specified player
TcpPlayer target = GetPlayer(reader.ReadInt32());
if (target != null && target.isConnected)
{
// Reset the position back to the beginning (4 bytes for size, 1 byte for ID, 4 bytes for player)
buffer.position = buffer.position - 9;
target.SendTcpPacket(buffer);
}
break;
}
case Packet.Broadcast:
{
// 4 bytes for size, 1 byte for ID
buffer.position = buffer.position - 5;
// Forward the packet to everyone connected to the server
for (int i = 0; i < mPlayers.size; ++i)
{
TcpPlayer tp = mPlayers[i];
if (reliable || tp.udpEndPoint == null || !mAllowUdp)
{
tp.SendTcpPacket(buffer);
}
else mUdp.Send(buffer, tp.udpEndPoint);
}
break;
}
default:
{
if (player.channel != null && (int)request <= (int)Packet.ForwardToPlayerBuffered)
{
// Other packets can only be processed while in a channel
if ((int)request >= (int)Packet.ForwardToAll)
{
ProcessForwardPacket(player, buffer, reader, request, reliable);
}
else
{
ProcessChannelPacket(player, buffer, reader, request);
}
}
else if (onCustomPacket != null)
{
onCustomPacket(player, buffer, reader, request, reliable);
}
break;
}
}
return true;
}
/// <summary>
/// Process an incoming packet.
/// </summary>
bool ProcessPacket(Buffer buffer, IPEndPoint ip)
{
if (mBan.Count != 0 && mBan.Contains(ip.Address.ToString()))
{
return(false);
}
var reader = buffer.BeginReading();
var request = (Packet)reader.ReadByte();
switch (request)
{
case Packet.RequestPing:
{
var writer = BeginSend(Packet.ResponsePing);
writer.Write(mTime);
writer.Write((ushort)mList.list.size);
EndSend(ip);
break;
}
case Packet.RequestAddServer:
{
if (reader.ReadUInt16() != GameServer.gameID)
{
return(false);
}
var ent = new ServerList.Entry();
ent.ReadFrom(reader);
if (mBan.Count != 0 && (mBan.Contains(ent.externalAddress.Address.ToString()) || IsBanned(ent.name)))
{
return(false);
}
if (ent.externalAddress.Address.Equals(IPAddress.None) ||
ent.externalAddress.Address.Equals(IPAddress.IPv6None))
{
ent.externalAddress = ip;
}
mList.Add(ent, mTime);
#if STANDALONE
Tools.Print(ip + " added a server (" + ent.internalAddress + ", " + ent.externalAddress + ")");
#endif
return(true);
}
case Packet.RequestRemoveServer:
{
if (reader.ReadUInt16() != GameServer.gameID)
{
return(false);
}
IPEndPoint internalAddress, externalAddress;
Tools.Serialize(reader, out internalAddress);
Tools.Serialize(reader, out externalAddress);
if (externalAddress.Address.Equals(IPAddress.None) ||
externalAddress.Address.Equals(IPAddress.IPv6None))
{
externalAddress = ip;
}
RemoveServer(internalAddress, externalAddress);
#if STANDALONE
Tools.Print(ip + " removed a server (" + internalAddress + ", " + externalAddress + ")");
#endif
return(true);
}
case Packet.RequestServerList:
{
if (reader.ReadUInt16() != GameServer.gameID)
{
return(false);
}
mList.WriteTo(BeginSend(Packet.ResponseServerList));
EndSend(ip);
return(true);
}
}
return(false);
}
/// <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 (mTcp.stage == TcpProtocol.Stage.Verifying)
{
if (mTcp.VerifyResponseID(response, reader))
{
#if !UNITY_WEBPLAYER
if (mUdp.isActive)
{
// If we have a UDP listener active, tell the server
BeginSend(Packet.RequestSetUDP).Write(mUdp.isActive ? (ushort)mUdp.listeningPort : (ushort)0);
EndSend();
}
#endif
mCanPing = true;
if (onConnect != null)
{
onConnect(true, null);
}
}
else if (onConnect != null)
{
onConnect(false, "Protocol version mismatch!");
}
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
switch (response)
{
case Packet.Empty: break;
case Packet.ForwardToAll:
case Packet.ForwardToOthers:
case Packet.ForwardToAllSaved:
case Packet.ForwardToOthersSaved:
case Packet.ForwardToHost:
{
if (onForwardedPacket != null)
{
onForwardedPacket(reader);
}
break;
}
case Packet.ForwardToPlayer:
{
// Skip the player ID
reader.ReadInt32();
if (onForwardedPacket != null)
{
onForwardedPacket(reader);
}
break;
}
case Packet.ResponsePing:
{
mPing = (int)(mTime - mPingTime);
mCanPing = true;
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 an empty packet to the server, opening up the communication channel
if (mUdp.isActive)
{
mUdp.SendEmptyPacket(mServerUdpEndPoint);
}
}
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();
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();
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();
short index = reader.ReadInt16();
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);
if (onDisconnect != null)
{
onDisconnect();
}
break;
}
default:
{
OnPacket callback;
if (packetHandlers.TryGetValue((byte)response, out callback))
{
if (callback != null)
{
callback(response, reader, ip);
}
}
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);
}
}
// 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>
/// Load the channel's data from the specified file.
/// </summary>
public bool LoadFrom(BinaryReader reader)
{
int version = reader.ReadInt32();
if (version != Player.version)
{
return(false);
}
// Clear all RFCs, just in case
for (int i = 0; i < rfcs.size; ++i)
{
RFC r = rfcs[i];
if (r.buffer != null)
{
r.buffer.Recycle();
}
}
rfcs.Clear();
created.Clear();
destroyed.Clear();
level = reader.ReadString();
data = reader.ReadString();
objectCounter = reader.ReadUInt32();
password = reader.ReadString();
persistent = reader.ReadBoolean();
playerLimit = reader.ReadUInt16();
int size = reader.ReadInt32();
for (int i = 0; i < size; ++i)
{
RFC rfc = new RFC();
rfc.uid = reader.ReadUInt32();
if (rfc.functionID == 0)
{
rfc.functionName = reader.ReadString();
}
Buffer b = Buffer.Create();
b.BeginWriting(false).Write(reader.ReadBytes(reader.ReadInt32()));
rfc.buffer = b;
rfcs.Add(rfc);
}
size = reader.ReadInt32();
for (int i = 0; i < size; ++i)
{
CreatedObject co = new CreatedObject();
co.playerID = reader.ReadInt32();
co.uniqueID = reader.ReadUInt32();
co.objectID = reader.ReadUInt16();
co.type = 1;
Buffer b = Buffer.Create();
b.BeginWriting(false).Write(reader.ReadBytes(reader.ReadInt32()));
b.BeginReading();
co.buffer = b;
created.Add(co);
}
size = reader.ReadInt32();
for (int i = 0; i < size; ++i)
{
destroyed.Add(reader.ReadUInt32());
}
return(true);
}
/// <summary>
/// Process an incoming packet.
/// </summary>
bool ProcessPacket(Buffer buffer, IPEndPoint ip)
{
BinaryReader reader = buffer.BeginReading();
Packet request = (Packet)reader.ReadByte();
switch (request)
{
case Packet.RequestPing:
{
BeginSend(Packet.ResponsePing);
EndSend(ip);
break;
}
case Packet.RequestAddServer:
{
if (reader.ReadUInt16() != GameServer.gameID)
{
return(false);
}
ServerList.Entry ent = new ServerList.Entry();
ent.ReadFrom(reader);
if (ent.externalAddress.Address.Equals(IPAddress.None))
{
ent.externalAddress = ip;
}
mList.Add(ent, mTime);
#if STANDALONE
Tools.Print(ip + " added a server (" + ent.internalAddress + ", " + ent.externalAddress + ")");
#endif
return(true);
}
case Packet.RequestRemoveServer:
{
if (reader.ReadUInt16() != GameServer.gameID)
{
return(false);
}
IPEndPoint internalAddress, externalAddress;
Tools.Serialize(reader, out internalAddress);
Tools.Serialize(reader, out externalAddress);
if (externalAddress.Address.Equals(IPAddress.None))
{
externalAddress = ip;
}
RemoveServer(internalAddress, externalAddress);
#if STANDALONE
Tools.Print(ip + " removed a server (" + internalAddress + ", " + externalAddress + ")");
#endif
return(true);
}
case Packet.RequestServerList:
{
if (reader.ReadUInt16() != GameServer.gameID)
{
return(false);
}
mList.WriteTo(BeginSend(Packet.ResponseServerList));
EndSend(ip);
return(true);
}
}
return(false);
}
/// <summary>
/// Receive and process a single incoming packet.
/// Returns 'true' if a packet was received, 'false' otherwise.
/// </summary>
bool ProcessPlayerPacket(Buffer buffer, TcpPlayer player, bool reliable)
{
BinaryReader reader = buffer.BeginReading();
Packet request = (Packet)reader.ReadByte();
//#if UNITY_EDITOR // DEBUG
// if (request != Packet.RequestPing) UnityEngine.Debug.Log("Server: " + request + " " + buffer.position + " " + buffer.size);
//#else
// if (request != Packet.RequestPing) Console.WriteLine("Server: " + request + " " + buffer.position + " " + buffer.size);
//#endif
// If the player has not yet been verified, the first packet must be an ID request
if (player.stage == TcpProtocol.Stage.Verifying)
{
if (player.VerifyRequestID(request, reader, true))
{
mDictionaryID.Add(player.id, player);
if (lobbyLink != null)
{
lobbyLink.SendUpdate(this);
}
if (onPlayerConnect != null)
{
onPlayerConnect(player);
}
return(true);
}
#if STANDALONE
Console.WriteLine(player.address + " has failed the verification step");
#endif
RemovePlayer(player);
return(false);
}
switch (request)
{
case Packet.Empty:
{
break;
}
case Packet.Error:
{
Error(player, reader.ReadString());
break;
}
case Packet.Disconnect:
{
RemovePlayer(player);
break;
}
case Packet.RequestPing:
{
// Respond with a ping back
BeginSend(Packet.ResponsePing);
EndSend(true, player);
break;
}
case Packet.RequestSetUDP:
{
int port = reader.ReadUInt16();
if (port != 0)
{
IPAddress ip = new IPAddress(player.tcpEndPoint.Address.GetAddressBytes());
SetPlayerUdpEndPoint(player, new IPEndPoint(ip, port));
}
else
{
SetPlayerUdpEndPoint(player, null);
}
// Let the player know if we are hosting an active UDP connection
ushort udp = mUdp.isActive ? (ushort)mUdp.listeningPort : (ushort)0;
BeginSend(Packet.ResponseSetUDP).Write(udp);
EndSend(true, player);
// Send an empty packet to the target player to open up UDP for communication
if (player.udpEndPoint != null)
{
mUdp.SendEmptyPacket(player.udpEndPoint);
}
break;
}
case Packet.RequestJoinChannel:
{
// Join the specified channel
int channelID = reader.ReadInt32();
string pass = reader.ReadString();
string levelName = reader.ReadString();
bool persist = reader.ReadBoolean();
ushort playerLimit = reader.ReadUInt16();
// Join a random existing channel or create a new one
if (channelID == -2)
{
bool randomLevel = string.IsNullOrEmpty(levelName);
channelID = -1;
for (int i = 0; i < mChannels.size; ++i)
{
Channel ch = mChannels[i];
if (ch.isOpen && (randomLevel || levelName.Equals(ch.level)) &&
(string.IsNullOrEmpty(ch.password) || (ch.password == pass)))
{
channelID = ch.id;
break;
}
}
// If no level name has been specified and no channels were found, we're done
if (randomLevel && channelID == -1)
{
BinaryWriter writer = BeginSend(Packet.ResponseJoinChannel);
writer.Write(false);
writer.Write("No suitable channels found");
EndSend(true, player);
break;
}
}
// Join a random new channel
if (channelID == -1)
{
channelID = mRandom.Next(100000000);
for (int i = 0; i < 1000; ++i)
{
if (!ChannelExists(channelID))
{
break;
}
channelID = mRandom.Next(100000000);
}
}
if (player.channel == null || player.channel.id != channelID)
{
bool isNew;
Channel channel = CreateChannel(channelID, out isNew);
if (channel == null || !channel.isOpen)
{
BinaryWriter writer = BeginSend(Packet.ResponseJoinChannel);
writer.Write(false);
writer.Write("The requested channel is closed");
EndSend(true, player);
}
else if (isNew)
{
channel.password = pass;
channel.persistent = persist;
channel.level = levelName;
channel.playerLimit = playerLimit;
SendLeaveChannel(player, false);
SendJoinChannel(player, channel);
}
else if (string.IsNullOrEmpty(channel.password) || (channel.password == pass))
{
SendLeaveChannel(player, false);
SendJoinChannel(player, channel);
}
else
{
BinaryWriter writer = BeginSend(Packet.ResponseJoinChannel);
writer.Write(false);
writer.Write("Wrong password");
EndSend(true, player);
}
}
break;
}
case Packet.RequestSetName:
{
// Change the player's name
player.name = reader.ReadString();
BinaryWriter writer = BeginSend(Packet.ResponseRenamePlayer);
writer.Write(player.id);
writer.Write(player.name);
if (player.channel != null)
{
EndSend(true, player.channel, null);
}
else
{
EndSend(true, player);
}
break;
}
case Packet.RequestSaveFile:
{
string fileName = reader.ReadString();
byte[] data = reader.ReadBytes(reader.ReadInt32());
SaveFile(fileName, data);
break;
}
case Packet.RequestLoadFile:
{
string fn = reader.ReadString();
byte[] data = LoadFile(fn);
BinaryWriter writer = BeginSend(Packet.ResponseLoadFile);
writer.Write(fn);
if (data != null)
{
writer.Write(data.Length);
writer.Write(data);
}
else
{
writer.Write(0);
}
EndSend(true, player);
break;
}
case Packet.RequestDeleteFile:
{
DeleteFile(reader.ReadString());
break;
}
case Packet.RequestNoDelay:
{
player.noDelay = reader.ReadBoolean();
break;
}
case Packet.RequestChannelList:
{
BinaryWriter writer = BeginSend(Packet.ResponseChannelList);
int count = 0;
for (int i = 0; i < mChannels.size; ++i)
{
if (!mChannels[i].closed)
{
++count;
}
}
writer.Write(count);
for (int i = 0; i < mChannels.size; ++i)
{
Channel ch = mChannels[i];
if (!ch.closed)
{
writer.Write(ch.id);
writer.Write((ushort)ch.players.size);
writer.Write(ch.playerLimit);
writer.Write(!string.IsNullOrEmpty(ch.password));
writer.Write(ch.persistent);
writer.Write(ch.level);
writer.Write(ch.data);
}
}
EndSend(true, player);
break;
}
case Packet.ForwardToPlayer:
{
// Forward this packet to the specified player
TcpPlayer target = GetPlayer(reader.ReadInt32());
if (target != null && target.isConnected)
{
// Reset the position back to the beginning (4 bytes for size, 1 byte for ID, 4 bytes for player)
buffer.position = buffer.position - 9;
target.SendTcpPacket(buffer);
}
break;
}
default:
{
if (player.channel != null && (int)request <= (int)Packet.ForwardToPlayerBuffered)
{
// Other packets can only be processed while in a channel
if ((int)request >= (int)Packet.ForwardToAll)
{
ProcessForwardPacket(player, buffer, reader, request, reliable);
}
else
{
ProcessChannelPacket(player, buffer, reader, request);
}
}
else if (onCustomPacket != null)
{
onCustomPacket(player, buffer, reader, request, reliable);
}
break;
}
}
return(true);
}
/// <summary>
/// Process an incoming packet.
/// </summary>
bool ProcessPacket(Buffer buffer, TcpProtocol tc)
{
BinaryReader reader = buffer.BeginReading();
Packet request = (Packet)reader.ReadByte();
// TCP connections must be verified first to ensure that they are using the correct protocol
if (tc.stage == TcpProtocol.Stage.Verifying)
{
if (tc.VerifyRequestID(request, reader, false)) return true;
#if STANDALONE
Console.WriteLine(tc.address + " has failed the verification step");
#endif
return false;
}
switch (request)
{
case Packet.RequestServerList:
{
if (reader.ReadUInt16() != GameServer.gameID) return false;
tc.data = (long)0;
return true;
}
case Packet.RequestAddServer:
{
if (reader.ReadUInt16() != GameServer.gameID) return false;
ServerList.Entry ent = new ServerList.Entry();
ent.ReadFrom(reader);
if (ent.externalAddress.Address.Equals(IPAddress.None))
ent.externalAddress = tc.tcpEndPoint;
mList.Add(ent, mTime).data = tc;
mLastChange = mTime;
#if STANDALONE
Console.WriteLine(tc.address + " added a server (" + ent.internalAddress + ", " + ent.externalAddress + ")");
#endif
return true;
}
case Packet.RequestRemoveServer:
{
if (reader.ReadUInt16() != GameServer.gameID) return false;
IPEndPoint internalAddress, externalAddress;
Tools.Serialize(reader, out internalAddress);
Tools.Serialize(reader, out externalAddress);
if (externalAddress.Address.Equals(IPAddress.None))
externalAddress = tc.tcpEndPoint;
RemoveServer(internalAddress, externalAddress);
#if STANDALONE
Console.WriteLine(tc.address + " removed a server (" + internalAddress + ", " + externalAddress + ")");
#endif
return true;
}
case Packet.Disconnect:
{
#if STANDALONE
if (RemoveServer(tc)) Console.WriteLine(tc.address + " has disconnected");
#else
RemoveServer(tc);
#endif
mTcp.Remove(tc);
return true;
}
case Packet.RequestSaveFile:
{
string fileName = reader.ReadString();
byte[] data = reader.ReadBytes(reader.ReadInt32());
SaveFile(fileName, data);
break;
}
case Packet.RequestLoadFile:
{
string fn = reader.ReadString();
byte[] data = LoadFile(fn);
BinaryWriter writer = BeginSend(Packet.ResponseLoadFile);
writer.Write(fn);
if (data != null)
{
writer.Write(data.Length);
writer.Write(data);
}
else writer.Write(0);
EndSend(tc);
break;
}
case Packet.RequestDeleteFile:
{
DeleteFile(reader.ReadString());
break;
}
case Packet.Error:
{
#if STANDALONE
Console.WriteLine(tc.address + " error: " + reader.ReadString());
#endif
return false;
}
}
#if STANDALONE
Console.WriteLine(tc.address + " sent a packet not handled by the lobby server: " + request);
#endif
return false;
}
/// <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>
/// 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>
/// Send the specified packet. Marks the buffer as used.
/// </summary>
public void SendTcpPacket(Buffer buffer, bool instant = false)
{
#if !MODDING
buffer.MarkAsUsed();
var reader = buffer.BeginReading();
if (buffer.size == 0)
{
#if UNITY_EDITOR
Debug.LogError("Trying to send a zero packet! " + buffer.position + " " + buffer.isWriting + " " + id);
#endif
buffer.Recycle();
return;
}
#if DEBUG_PACKETS && !STANDALONE
var packet = (Packet)buffer.PeekByte(4);
if (packet != Packet.RequestPing && packet != Packet.ResponsePing)
{
UnityEngine.Debug.Log("Sending: " + packet + " to " + name + " (" + (buffer.size - 5).ToString("N0") + " bytes)");
}
#endif
if (custom != null)
{
if (!custom.SendPacket(buffer))
{
buffer.Recycle();
Disconnect();
}
else
{
buffer.Recycle();
}
return;
}
if (mSocket != null && mSocket.Connected)
{
lock (mOut)
{
#if UNITY_WINRT
mSocket.Send(buffer.buffer, buffer.size, SocketFlags.None);
#else
if (instant)
{
try
{
var before = mSocket.NoDelay;
if (!before)
{
mSocket.NoDelay = true;
}
mSocket.Send(buffer.buffer, buffer.position, buffer.size, SocketFlags.None);
if (!before)
{
mSocket.NoDelay = false;
}
buffer.Recycle();
return;
}
catch { }
}
if (mSending)
{
// Simply add this packet to the outgoing queue
mOut.Enqueue(buffer);
}
else
{
// If it's the first packet, let's begin the send process
mSending = true;
try
{
mSocket.BeginSend(buffer.buffer, buffer.position, buffer.size, SocketFlags.None, OnSend, buffer);
}
catch (System.Exception ex)
{
mOut.Clear();
buffer.Recycle();
AddError(ex);
CloseNotThreadSafe(false);
mSending = false;
}
}
#endif
}
return;
}
if (sendQueue != null)
{
if (buffer.position != 0)
{
// Offline mode sends packets individually and they should not be reused
#if UNITY_EDITOR
Debug.LogWarning("Packet's position is " + buffer.position + " instead of 0. Potentially sending the same packet more than once. Ignoring...");
#endif
return;
}
// Skip the packet's size
int size = reader.ReadInt32();
if (size == buffer.size)
{
lock (sendQueue) sendQueue.Enqueue(buffer);
return;
}
// Multi-part packet -- split it up into separate ones
lock (sendQueue)
{
for (;;)
{
var bytes = reader.ReadBytes(size);
var temp = Buffer.Create();
var writer = temp.BeginWriting();
writer.Write(size);
writer.Write(bytes);
temp.BeginReading(4);
sendQueue.Enqueue(temp);
if (buffer.size > 0)
{
size = reader.ReadInt32();
}
else
{
break;
}
}
}
}
#endif
buffer.Recycle();
}
/// <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);
}
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);
if (mExpected < 0 || mExpected > 16777216)
{
Close(true);
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
temp.BeginWriting(false).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);
}
/// <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 (mTcp.stage == TcpProtocol.Stage.Verifying)
{
if (mTcp.VerifyResponseID(response, reader))
{
#if !UNITY_WEBPLAYER
if (mUdp.isActive)
{
// If we have a UDP listener active, tell the server
BeginSend(Packet.RequestSetUDP).Write(mUdp.isActive ? (ushort)mUdp.listeningPort : (ushort)0);
EndSend();
}
#endif
mCanPing = true;
if (onConnect != null) onConnect(true, null);
}
else if (onConnect != null)
{
onConnect(false, "Protocol version mismatch!");
}
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
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.ResponsePing:
{
mPing = (int)(mTime - mPingTime);
mCanPing = true;
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 an empty packet to the server, opening up the communication channel
if (mUdp.isActive) mUdp.SendEmptyPacket(mServerUdpEndPoint);
}
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();
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();
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);
if (onDisconnect != null) onDisconnect();
break;
}
default:
{
OnPacket callback;
if (packetHandlers.TryGetValue((byte)response, out callback))
{
if (callback != null)
{
callback(response, reader, ip);
}
}
break;
}
}
return true;
}
