networking-servers

name	networking-servers
version	2.0.0
description	Multiplayer systems, netcode, game servers, synchronization, and anti-cheat. Build scalable, responsive multiplayer experiences.
sasmp_version	1.3.0
bonded_agent	05-networking-multiplayer
bond_type	PRIMARY_BOND
parameters	[{"name":"architecture","type":"string","required":false,"validation":{"enum":["client_server","p2p","hybrid","dedicated"]}},{"name":"framework","type":"string","required":false,"validation":{"enum":["photon","mirror","netcode","fishnet","custom"]}}]
retry_policy	{"enabled":true,"max_attempts":5,"backoff":"exponential","jitter":true}
observability	{"log_events":["start","complete","error","reconnect"],"metrics":["latency_ms","packet_loss","bandwidth_kbps","player_count"]}

Networking & Game Servers

Network Architecture

CLIENT-SERVER (AUTHORITATIVE):
┌─────────────────────────────────────────────────────────────┐
│                   DEDICATED SERVER                           │
│  ┌─────────────────────────────────────────────────────┐   │
│  │  • Authoritative game state                          │   │
│  │  • Physics simulation                                │   │
│  │  • Hit validation                                    │   │
│  │  • Anti-cheat checks                                 │   │
│  └─────────────────────────────────────────────────────┘   │
│       ↑↓              ↑↓              ↑↓              ↑↓    │
│   [Client A]    [Client B]    [Client C]    [Client D]     │
│   └─ Prediction  └─ Prediction  └─ Prediction  └─ Prediction│
└─────────────────────────────────────────────────────────────┘

Netcode Implementation

Client Prediction with Reconciliation

// ✅ Production-Ready: Prediction + Reconciliation System
public class NetworkedMovement : NetworkBehaviour
{
    private struct InputPayload
    {
        public uint Tick;
        public uint Sequence;
        public Vector2 MoveInput;
        public bool Jump;
    }

    private Queue<InputPayload> _pendingInputs = new();
    private CircularBuffer<PlayerState> _stateHistory;
    private uint _inputSequence;

    private void Update()
    {
        if (!IsOwner) return;

        // Capture input
        var input = new InputPayload
        {
            Tick = NetworkManager.ServerTime.Tick,
            Sequence = _inputSequence++,
            MoveInput = new Vector2(Input.GetAxis("Horizontal"), Input.GetAxis()),
            Jump = Input.GetButtonDown()
        };

        
        ApplyInput(input);

        
        _pendingInputs.Enqueue(input);
        _stateHistory.Add(GetCurrentState());

        
        SendInputServerRpc(input);
    }

    []
    
    {
         (!IsOwner) ;

        
         (_pendingInputs.Count >  && _pendingInputs.Peek().Sequence <= ackedSequence)
            _pendingInputs.Dequeue();

        
         predictedState = _stateHistory.Get(ackedSequence);
         (Vector3.Distance(predictedState.Position, serverState.Position) > )
        {
            
            SetState(serverState);
             ( input  _pendingInputs)
                ApplyInput(input);
        }
    }
}