search

lsalzman / enet

ENet reliable UDP networking library
MIT License
2.78k stars 675 forks source link

ENetPacketFreeCallback question #185

Closed playingoDEERUX closed 2 years ago

playingoDEERUX commented 2 years ago

Is ENetPacketFreeCallback called before the peer would ever be reset by ENet? I want to implement my own acknowledges to the peer using this, am I fine or could it be that ENetPeer* may be taken by a different user/client when this callback occurs?

Any response is appreciated.

lsalzman commented 2 years ago

During a normal disconnect the packets will be cleaned up before a peer is a reset. On an actual reset without a disconnect, the peer's state will be cleaned up and all the queues packets on it will be destroyed at that time as well.

However, for acknowledgement systems, I don't think this would be relevant. To make an acknowledgement, everything you send from host A to host B should have a packet ID you assign to it. Host B sends a message to host A that it received a given packet ID. If host A gets that ID ack'd, then it will stop trying to resend. If it doesn't get an ack in a certain timeframe, host A then resends that message to host B.

playingoDEERUX commented 2 years ago

Thanks for the help, ENet is a great library. However, I wanted to say (since I have been doing sone performance tests with ENet lately), that I could profile some slowdown due to ENet's packet sorting, apparently..?!

Have you noticed this too and if so, were there any attempts at optimizing this?