Beginner Developer ..

Hello .
I just joined this Sro coding world
I want to know the meaning of some words ..
So lets start :
what is the meaning of these words ?
1- OpCode
2- Packets
3- Proxy
4- Phconnecter
I know these words may mean another definition in other works , but I want to know the meaning of that in sro coding ..

Opcodes are packet identifiers. So that the client and server know what the packet is supposed to contain.

Packets are data packages sent over the network. From client to server and vice versa.

Proxy in SRO Coding sense is used to perform a MITM attack. You can listen to the network channels and send custom packets.

PhConnector is a SRO proxy which implemented the SRO security system.