UnityECS/LocalPackages/com.nimin.network/Runtime/NetworkDriverAsset.cs

using System.Collections;
using System.Collections.Generic;
using Unity.Collections;
using Unity.Networking.Transport;
using Unity.Networking.Transport.Utilities;
using UnityEngine;

namespace GameCore.Network
{
    [CreateAssetMenu(menuName = "GameCore/Network/" + nameof(NetworkDriverAsset),
        fileName = nameof(NetworkDriverAsset))]
    public class NetworkDriverAsset : ScriptableObject
    {
        public uint port = 7777;

        [Header("Simulator Settings")] public bool useSimulator;
        public int packetDelayMs = 500;
        public int packetJitterMs = 300;
        public int packetDropPercentage = 10;

        private NetworkDriver CreateDriver()
        {
            var settings = new NetworkSettings(Allocator.Temp);
            settings.WithNetworkConfigParameters(disconnectTimeoutMS: 5000);
            settings.WithReliableStageParameters(32);
            settings.WithSimulatorStageParameters(32, NetworkParameterConstants.MaxConnectAttempts,
                packetDelayMs: packetDelayMs, packetJitterMs: packetJitterMs,
                packetDropPercentage: packetDropPercentage);

            var driver = NetworkDriver.Create(settings);

            if (useSimulator)
            {
                driver.CreatePipeline(typeof(SimulatorPipelineStageInSend));
                driver.CreatePipeline(typeof(ReliableSequencedPipelineStage), typeof(SimulatorPipelineStageInSend));
            }
            else
            {
                driver.CreatePipeline(typeof(ReliableSequencedPipelineStage));
            }

            return driver;
        }

        public NetworkDriver CreateServerDriver(string address)
        {
            var driver = CreateDriver();
            var ok = false;
            try
            {
                if (!NetworkEndPoint.TryParse(address, (ushort)port, out var endpoint))
                {
                    return default;
                }

                if (driver.Bind(endpoint) != 0)
                {
                    Debug.Log("Failed to bind to " + endpoint);
                    return default;
                }

                ok = true;
                driver.Listen();
                return driver;
            }
            finally
            {
                if (!ok)
                    driver.Dispose();
            }
        }

        public NetworkDriver CreateClientDriver(string address, out NetworkConnection connection)
        {
            var driver = CreateDriver();
            if (!NetworkEndPoint.TryParse(address, (ushort)port, out var endpoint))
            {
                connection = default;
                driver.Dispose();
                return default;
            }

            connection = driver.Connect(endpoint);
            return driver;
        }
    }
}