How to deal with the operation of a network application (creating a program to receive players from the server)?

Question

Computer networks

I want to make out how to write programs for clients on the basis of ready-made ones.
There are different bots there, clients for receiving information that the server sends when a client requests it.
I thought I would open the sniffer and see what the request for this data looks like, and I'll deal with the answer. But when I decided to turn it around, in the communication between the client and the server, all I saw was some kind of character set.
I want to understand how others do how to search for the right package, approximately according to what I said above. And maybe other chips, I think there is someone who did something similar.

Answer 1

Read the SDK or server API for a specific game (try talking to the game developer)...
Or reverse engineering the protocol (which is very difficult...)
Here:
https://github.com/sonicsnes/node-gamedig
https:/ /www.npmjs.com/package/gamedig