Networking library compatible C and Java

Question

I'm going to develop a little Android game with multiplayer feature. I've made a server framework in C++ using eNet library and I would like to use this framework for make the server.

So, there is any networking library like eNet compatible with Java and C++? I know that exist jEnet (but is very out of date Java-enet-wrapper (https://github.com/csm/java-enet-wrapper), it's immature.

Answer 1

You might try out UDT: http://udt.sourceforge.net/

I have used it before with good success to communicate between Java and C++ processes.

Answer 2

Check out https://github.com/julienr/libenet-android.

ENet is much more advisable than UDT in your case as UDT can be processor intensive and a gaming service would at least hope for many connections. The difference is from UDTs implementation of congestion control which has relatively high CPU demand. UDT is awesome, but designed more for large, high bandwith transfers over long distances, rather than small, high latency transactions which are desired in gaming.

Also note that main stream congestion control algorithms do not do well with small transactions. They work by monitoring RTT of each packet in a transaction and/or by monitoring packet loss rate within a transaction, which is moot when each transation is only 1 - 2 packets on avg. The additional demands of the congestion control protocol will effect latency even though the congestion control itself is not likely to ever be engaged if transfers are kept small.