private void ProcessEvent(MyPacket packet)
{
if (_networkHandlers.Count == 0)
{
//pass the message back to the game server
try
{
((MyReplicationLayer)MyMultiplayer.ReplicationLayer).OnEvent(packet);
}
catch (Exception ex)
{
ApplicationLog.Error(ex, "~Error processing event!");
//crash after logging, bad things could happen if we continue on with bad data
throw;
}
return;
}
//magic: DO NOT TOUCH
BitStream stream = new BitStream();
stream.ResetRead(packet);
NetworkId networkId = stream.ReadNetworkId();
//this value is unused, but removing this line corrupts the rest of the stream
NetworkId blockedNetworkId = stream.ReadNetworkId();
uint eventId = (uint)stream.ReadUInt16();
CallSite site;
IMyNetObject sendAs;
object obj;
if (networkId.IsInvalid) // Static event
{
site = m_typeTable.StaticEventTable.Get(eventId);
sendAs = null;
obj = null;
}
else // Instance event
{
sendAs = ((MyReplicationLayer)MyMultiplayer.ReplicationLayer).GetObjectByNetworkId(networkId);
if (sendAs == null)
{
return;
}
var typeInfo = m_typeTable.Get(sendAs.GetType());
int eventCount = typeInfo.EventTable.Count;
if (eventId < eventCount) // Directly
{
obj = sendAs;
site = typeInfo.EventTable.Get(eventId);
}
else // Through proxy
{
obj = ((IMyProxyTarget)sendAs).Target;
typeInfo = m_typeTable.Get(obj.GetType());
site = typeInfo.EventTable.Get(eventId - (uint)eventCount); // Subtract max id of Proxy
}
}
#if DEBUG
if (ExtenderOptions.IsDebugging)
{
if (!site.MethodInfo.Name.Contains("SyncPropertyChanged")) // && !site.MethodInfo.Name.Contains( "OnSimulationInfo" ) )
{
ApplicationLog.Error($"Caught event {site.MethodInfo.Name} from user {PlayerMap.Instance.GetFastPlayerNameFromSteamId( packet.Sender.Id.Value )}:{packet.Sender.Id.Value}. Length {stream.ByteLength}B");
}
}
#endif
//we're handling the network live in the game thread, this needs to go as fast as possible
bool handled = false;
Parallel.ForEach(_networkHandlers, handler =>
{
try
{
if (handler.CanHandle(site))
{
handled |= handler.Handle(packet.Sender.Id.Value, site, stream, obj);
}
}
catch (Exception ex)
{
ApplicationLog.Error(ex.ToString());
}
});
//one of the handlers wants us to discard this packet
if (handled)
{
return;
}
//pass the message back to the game server
try
{
((MyReplicationLayer)MyMultiplayer.ReplicationLayer).OnEvent(packet);
}
catch (Exception ex)
{
ApplicationLog.Error(ex, "Error when returning control to game server!");
//crash after logging, bad things could happen if we continue on with bad data
throw;
}
}
/// <summary>
/// This is the main body of the network intercept system. When messages come in from clients, they are processed here
/// before being passed on to the game server.
///
/// DO NOT modify this method unless you're absolutely sure of what you're doing. This can very easily destabilize the game!
/// </summary>
/// <param name="packet"></param>
private void OnEvent(MyPacket packet)
{
if (_networkHandlers.Count == 0)
{
//pass the message back to the game server
try
{
((MyReplicationLayer)MyMultiplayer.ReplicationLayer).OnEvent(packet);
}
catch (Exception ex)
{
_log.Fatal(ex);
_log.Fatal(ex, "~Error processing event!");
//crash after logging, bad things could happen if we continue on with bad data
throw;
}
return;
}
var stream = new BitStream();
stream.ResetRead(packet);
var networkId = stream.ReadNetworkId();
//this value is unused, but removing this line corrupts the rest of the stream
var blockedNetworkId = stream.ReadNetworkId();
var eventId = (uint)stream.ReadInt16();
CallSite site;
object obj;
if (networkId.IsInvalid) // Static event
{
site = m_typeTable.StaticEventTable.Get(eventId);
obj = null;
}
else // Instance event
{
var sendAs = ((MyReplicationLayer)MyMultiplayer.ReplicationLayer).GetObjectByNetworkId(networkId);
if (sendAs == null)
{
return;
}
var typeInfo = m_typeTable.Get(sendAs.GetType());
var eventCount = typeInfo.EventTable.Count;
if (eventId < eventCount) // Directly
{
obj = sendAs;
site = typeInfo.EventTable.Get(eventId);
}
else // Through proxy
{
obj = ((IMyProxyTarget)sendAs).Target;
typeInfo = m_typeTable.Get(obj.GetType());
site = typeInfo.EventTable.Get(eventId - (uint)eventCount); // Subtract max id of Proxy
}
}
//we're handling the network live in the game thread, this needs to go as fast as possible
var discard = false;
foreach (var handler in _networkHandlers)
//Parallel.ForEach(_networkHandlers, handler =>
{
try
{
if (handler.CanHandle(site))
{
discard |= handler.Handle(packet.Sender.Id.Value, site, stream, obj, packet);
}
}
catch (Exception ex)
{
//ApplicationLog.Error(ex.ToString());
_log.Error(ex);
}
}
//one of the handlers wants us to discard this packet
if (discard)
{
return;
}
//pass the message back to the game server
try
{
((MyReplicationLayer)MyMultiplayer.ReplicationLayer).OnEvent(packet);
}
catch (Exception ex)
{
_log.Fatal(ex);
_log.Fatal(ex, "Error when returning control to game server!");
//crash after logging, bad things could happen if we continue on with bad data
throw;
}
}
