i-mic-fps/lib/networking/backend

I-MIC FPS / CyberarmEngine Networking System

End Goal: Reliable and ordered packets of abitrary size

Current Goal: Unreliable, unordered packets of limited size

Internal Packet Format

Based on minetest's network protocol

Base header

All packet headers start with these fields

Protocol Version: Unsigned char
Packet Type: Unsigned char
Peer ID: Unsigned char

Basic packet header

No unique header fields

Control packet header

Control Type: Unsigned char
Control Data: Unsigned 16-bit integer

Control Types:

• ACK - Acknowledge receipt of reliable packet
• SET_PEER_ID - Set peer id of connected client, client must provide this to continue communicating
• PING - Used to track peer's network latency
• HEARTBEAT - Used as keep alive
• DISCONNECT - Peer is disconnecting

Split Packet Header

Sequence Number: Unsigned 16-bit number
Chunk Count: Unsigned 16-bit number
Chunk Number: Unsigned 16-bit number

Reliable Packet Header

Sequence Number: Unsigned 16-bit number