I don't know you very well but this the reality of every question or most of the questions, they are ALL ambiguous, they don't ask concrete questions, most people expect a download link as help or solution, there is no knowledge in sharing some codes and stuff, they won't understand it, let me put this example, is old but it will work.
If i had the known problem with charges consumption, and you just post me a piece of assembly code or in C++, am i going to understand what it does ? how does it work ? No, unless i already have previous RCE and C++ knowledge, if i had this sort of problem in the COEP for example, and you post the code, i will just replace it, compile it and done, it works. But the questions is.
Did I learned something with it ?
No, i just pasted some random garbage that i don't even understand but it works, i can be adding a backdoor and i don't even know it.
People need to understand, this is not homework from school, or something you can learn from the code, or on the weekend, i used to think like that and damn if i was wrong.
I learned, hell im still learning but i started with the basics, 1st ASM, then C++ and the RCE. Step by step, and i started reading books and writing codes not related to the L2Server.