674 lines
25 KiB
C#
674 lines
25 KiB
C#
using System;
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using System.Collections.Concurrent;
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using System.Collections.Generic;
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using System.Timers;
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using Cysharp.Threading.Tasks;
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using kcp2k;
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using Newtonsoft.Json;
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using Timer = System.Timers.Timer;
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using System.IO;
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using System.Linq;
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using System.Net;
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using System.Net.Sockets;
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using System.Reflection;
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using System.Threading.Tasks;
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using System.Windows.Markup;
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using BITKit.Net.Examples;
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namespace BITKit.Net
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{
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public class KCPNetServer:INetServer,INetProvider
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{
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public string Name { get; set; } = "Default";
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public int TickRate { get; set; } = 16;
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public bool ManualTick { get; set; }
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public event Action<int> OnClientConnected;
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public event Action<int> OnClientDisconnected;
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public event Action OnStartServer;
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public event Action OnStopServer;
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private readonly KcpServer server;
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private readonly GenericEvent _events = new();
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private bool _isStarted;
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private readonly Timer _timer = new(100)
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{
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AutoReset = true
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};
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private int _index = 1001;
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private readonly ConcurrentDictionary<int, object> _p2p = new();
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private readonly ConcurrentDictionary<string,Func<object,UniTask<object>>> _rpc = new();
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private readonly ConcurrentDictionary<string,MethodInfo> _rpcMethods = new();
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private readonly ConcurrentDictionary<string,EventInfo> _rpcEvents = new();
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private readonly ConcurrentDictionary<string,object> _rpcHandles = new();
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private readonly ConcurrentDictionary<int,DateTime> _lastHeartbeat = new();
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private readonly ConcurrentQueue<(int id,byte[] bytes)> _sendQueue = new();
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private readonly ConcurrentDictionary<int,int> _dropCount = new();
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private DateTime _now=DateTime.Now;
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private TimeSpan _interval=TimeSpan.FromSeconds(0.32);
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private readonly byte[] _heartBeat = new byte[] { (byte)NetCommandType.Heartbeat };
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[NetRpc]
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public event Action<int, float, bool> OnNetRpcTest;
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public KCPNetServer()
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{
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server = new KcpServer(
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OnConnected,
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OnData,
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OnDisconnect,
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OnError,
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KCPNet.Config
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);
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_timer.Elapsed += Tick;
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BIT4Log.Log<KCPNetServer>("已创建KCP服务器");
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AddCommandListener<SimplePing>(F);
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AddRpcHandle(this);
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OnNetRpcTest += (_int, _float, _bool) =>
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{
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BIT4Log.Log<KCPNetServer>($"已收到Rpc测试:{_int},{_float},{_bool}");
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};
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return;
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UniTask<SimplePing> F(SimplePing p)
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{
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p.EndTime = DateTime.Now;
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return UniTask.FromResult(p);
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}
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}
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private void Tick(object sender, ElapsedEventArgs e)
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{
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_now = DateTime.UtcNow;
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try
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{
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if (_isStarted && IsRunningServer is false)
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{
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StartServer(_port);
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}
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foreach (var id in Connections.Keys.ToArray())
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{
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server.Send(id,_heartBeat , KcpChannel.Unreliable);
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if (!_lastHeartbeat.TryGetValue(id, out var time)) continue;
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if (!((_now - time).TotalSeconds > 3)) continue;
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server.Disconnect(id);
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_lastHeartbeat.TryRemove(id);
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BIT4Log.Log<KCPNetServer>($"{Name}:链接{id}超时,已断开");
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}
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if (server.IsActive() is false || ManualTick) return;
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server.Tick();
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//BIT4Log.Log<KCPNetServer>($"{Name}目前有{server.connections.Count}个链接");
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_dropCount.Clear();
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while (_sendQueue.TryDequeue(out var value))
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{
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if (server.connections.ContainsKey(value.id))
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{
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server.Send(value.id, value.bytes, KcpChannel.Reliable);
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}
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else
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{
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int UpdateValueFactory(int i, int i1) => i1 + value.bytes.Length;
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_dropCount.AddOrUpdate(value.id,value.bytes.Length,UpdateValueFactory);
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}
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}
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foreach (var (id,length) in _dropCount)
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{
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BIT4Log.Log<KCPNetServer>($"未找到链接:{id},已丢弃字节数量:{length}");
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}
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}
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catch (SocketException)
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{
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//丢失链接,有用户断开连接,通常是正常现象
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}
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catch (Exception exception)
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{
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BIT4Log.LogException(exception);
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}
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}
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private ushort _port;
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public void StartServer(ushort port = 27014)
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{
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_port = port;
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if (IsRunningServer is false)
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{
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if (TickRate > 0)
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{
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_timer.Interval = 1000f / TickRate;
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_interval = TimeSpan.FromSeconds(1.0 / TickRate);
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}
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OnStartServer?.Invoke();
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server.Start(port);
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_timer.Start();
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_isStarted = true;
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BIT4Log.Log<KCPNetServer>($"已启动KCP服务器:{port}");
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}
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else
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{
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BIT4Log.Warning<KCPNetServer>($"KCP服务器已经启动,忽略此次请求");
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}
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}
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public void StopServer(bool dispose = false)
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{
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if (IsRunningServer)
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{
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_isStarted = false;
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server.Stop();
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OnStopServer?.Invoke();
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_timer.Stop();
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BIT4Log.Log<KCPNetServer>($"已停止KCP服务器");
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}
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else
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{
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BIT4Log.Warning<KCPNetServer>($"KCP服务器未运行,忽略此次请求");
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}
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}
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public bool IsRunningServer => server.IsActive();
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public void SendMessageToClient(int id, string message)
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{
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using var ms = new MemoryStream();
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using var writer = new BinaryWriter(ms);
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writer.Write((byte)NetCommandType.Message);
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writer.Write(message);
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_sendQueue.Enqueue((id,ms.ToArray()));
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}
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public void SendMessageToAll(string message)
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{
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foreach (var Id in server.connections.Keys)
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{
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SendMessageToClient(Id,message);
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}
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}
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public IDictionary<int, EndPoint> Connections =>
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new Dictionary<int, EndPoint>(
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server.connections.Select(x => new KeyValuePair<int, EndPoint>(x.Key, x.Value.remoteEndPoint)
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));
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public void Tick()
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{
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try
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{
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Tick(null,null);
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}
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catch (SocketException)
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{
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BIT4Log.Log<INetServer>("有用户断开连接，如有异常请检查");
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}
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}
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public void HandShake()
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{
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foreach (var id in server.connections.Keys)
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{
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server.Send(id, new byte[]{0x03, 0x04}, KcpChannel.Reliable);
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}
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}
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private void OnConnectedInternel(int id)
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{
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OnClientConnected?.Invoke(id);
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ClientCommand(id,new NetClientAllocateIdCommand
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{
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Id = id,
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Ip = server.connections[id].remoteEndPoint.ToString()
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});
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BIT4Log.Log<KCPNetServer>($"{id}已连接到:{Name}");
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SendMessageToClient(id, $"成功连接到服务器:{Name}");
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}
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private void OnConnected(int Id)
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{
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// OnClientConnected?.Invoke(Id);
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// ClientCommand(Id,new NetClientAllocateIdCommand
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// {
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// Id = Id,
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// Ip = server.connections[Id].remoteEndPoint.ToString()
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// });
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// BIT4Log.Log<KCPNetServer>($"{Id}已连接到:{Name}");
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// SendMessageToClient(Id, $"成功连接到服务器:{Name}");
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}
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private void OnDisconnect(int Id)
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{
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OnClientDisconnected?.Invoke(Id);
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BIT4Log.Log<KCPNetServer>($"{Id}已断开");
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}
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private void OnData(int Id, ArraySegment<byte> bytes, KcpChannel channel)
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{
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try
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{
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OnDataInternel(Id, bytes, channel);
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}
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catch (Exception e)
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{
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BIT4Log.LogException(e);
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}
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}
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private async void OnDataInternel(int Id, ArraySegment<byte> bytes, KcpChannel channel)
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{
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using var ms = new MemoryStream(bytes.ToArray());
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using var reader = new BinaryReader(ms);
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try
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{
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var type = (NetCommandType)ms.ReadByte();
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switch (type)
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{
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case NetCommandType.Message:
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BIT4Log.Log<KCPNetServer>($"已收到消息,{Id}:{reader.ReadString()}");
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break;
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case NetCommandType.Command:
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var command = BITBinary.Read(reader);
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if (command is object[] { Length: 1 } objs) command = objs[0];
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//BIT4Log.Log<KCPNetServer>($"已收到指令:{command},值:\n{JsonConvert.SerializeObject(command, Formatting.Indented)}");
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_events.Invoke(command.GetType().FullName, command);
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(int Id, object Command) tuple = (Id, command);
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_events.InvokeDirect(command.GetType().FullName, tuple);
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break;
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case NetCommandType.Heartbeat:
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if (Connections.ContainsKey(Id))
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{
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_lastHeartbeat.AddOrUpdate(Id,OnAdd,OnUpdate);
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}
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break;
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DateTime OnAdd(int arg)
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{
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OnConnectedInternel(Id);
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return _now;
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}
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DateTime OnUpdate(int arg1, DateTime arg2)
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{
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return _now;
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}
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case NetCommandType.AllClientCommand:
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foreach (var id in server.connections.Keys.ToArray())
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{
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_sendQueue.Enqueue((id,bytes.ToArray()));
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}
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break;
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case NetCommandType.TargetCommand:
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var targetId = reader.ReadInt32();
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_sendQueue.Enqueue((targetId,bytes.ToArray()));
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break;
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case NetCommandType.Ping:
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_sendQueue.Enqueue((Id,new byte[] { (byte)NetCommandType.Ping }));
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break;
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case NetCommandType.GetFromServer:
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{
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var requestId = reader.ReadInt32();
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using var returnMS = new MemoryStream();
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await using var returnWriter = new BinaryWriter(returnMS);
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returnWriter.Write((byte)NetCommandType.ReturnToClient);
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returnWriter.Write(requestId);
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if (reader.ReadBoolean())
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{
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var path = reader.ReadString();
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var pars = BITBinary.Read(reader).As<object[]>();
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object value = null;
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if (_rpcMethods.TryGetValue(path, out var methodInfo))
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{
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var isAwaitable = methodInfo.ReturnType.GetMethod(nameof(Task.GetAwaiter)) != null;
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var handle = _rpcHandles[path];
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if (methodInfo.GetParameters().Length is 0)
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{
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pars = new object[] { };
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}
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try
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{
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if (isAwaitable)
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{
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dynamic result = methodInfo.Invoke(handle, pars)!;
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if (methodInfo.ReturnType == typeof(void)
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||
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methodInfo.ReturnType == typeof(UniTask)
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||
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methodInfo.ReturnType == typeof(UniTask<>)
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)
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{
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await result;
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value = -1;
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}
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else
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{
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value = await result;
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}
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}
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else
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{
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value = methodInfo.Invoke(handle, pars);
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}
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}
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catch (Exception e)
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{
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if(e is TargetInvocationException tie)
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e = tie.InnerException;
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returnWriter.Write(false);
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returnWriter.Write(e.Message);
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var _bytes = returnMS.ToArray();
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_sendQueue.Enqueue((Id,_bytes));
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if (e is InGameException inGameException)
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{
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BIT4Log.Warning<KCPNetServer>(inGameException.Message);
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return;
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}
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BIT4Log.LogException(e);
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return;
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}
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returnWriter.Write(true);
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}else if (_rpcEvents.TryGetValue(path, out var eventInfo))
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{
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var handle = _rpcHandles[path];
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var fieldInfo = handle.GetType().GetField(eventInfo.Name,ReflectionHelper.Flags)!;
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var eventDelegate = fieldInfo.GetValue(handle) as MulticastDelegate;
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foreach (var del in eventDelegate!.GetInvocationList())
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{
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del.Method.Invoke(del.Target, pars);
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}
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}
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else
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{
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throw new Exception($"未找到对应的Rpc方法:{path}");
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}
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if (value is not null)
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{
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try
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{
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BITBinary.Write(returnWriter, value);
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}
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catch (NullReferenceException e)
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{
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throw;
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}
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catch (Exception e)
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{
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throw;
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}
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}
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}
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else
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{
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var commandObj = BITBinary.Read(reader)
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.As<object[]>()[0];
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var funcName = commandObj.GetType()!.FullName!;
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if (_rpc.TryGetValue(funcName, out var func))
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{
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var value = await func.As<Func<object, UniTask<object>>>().Invoke(commandObj);
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returnWriter.Write(true);
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BITBinary.Write(returnWriter, value);
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}
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else
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{
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throw new Exception($"未找到对应的Rpc方法:{funcName}");
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}
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}
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{
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var _bytes = returnMS.ToArray();
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_sendQueue.Enqueue((Id,_bytes));
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}
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}
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break;
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case NetCommandType.ReturnToServer:
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{
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var id = reader.ReadInt32();
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if (reader.ReadBoolean())
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{
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var value = BITBinary.Read(reader);
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_p2p.TryAdd(id, value);
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}
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else
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{
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var message = reader.ReadString();
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_p2p.TryAdd(id, new Exception(message));
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}
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}
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break;
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default:
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BIT4Log.Log<KCPNetServer>($"未知消息类型:{type},字节:{(byte)type}");
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BIT4Log.Log<KCPNetServer>(
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$"已收到:({Id}, {BitConverter.ToString(bytes.Array, bytes.Offset, bytes.Count)} @ {channel})");
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break;
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}
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}
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catch (Exception e)
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{
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ms.Close();
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reader.Close();
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BIT4Log.LogException(e);
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}
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}
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private void OnError(int Id, ErrorCode errorCode, string message)
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{
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BIT4Log.Log<KCPNetServer>($"异常:{errorCode},{message}");
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}
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public void ServerCommand<T>(T command = default)
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{
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_events.Invoke<T>(command);
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}
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public void AllClientCommand<T>(T command = default)
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{
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foreach (var id in server.connections.Keys.ToArray())
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{
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ClientCommand(id, command);
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}
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}
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public void ClientCommand<T>(int id, T command)
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{
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using var ms = new MemoryStream();
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using var writer = new BinaryWriter(ms);
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writer.Write((byte)NetCommandType.Command);
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BITBinary.Write(writer,command);
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_sendQueue.Enqueue((id,ms.ToArray()));
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}
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public UniTask<T> GetFromServer<T>(string path=default,params object[] pars)
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{
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throw new NotImplementedException();
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}
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public async UniTask<T> GetFromClient<T>(int id,string path=default, params object[] pars)
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{
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await UniTask.SwitchToThreadPool();
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var index = _index++;
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var ms = new MemoryStream();
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var writer = new BinaryWriter(ms);
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writer.Write((byte)NetCommandType.GetFromClient);
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writer.Write(index);
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if (string.IsNullOrEmpty(path))
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{
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writer.Write(false);
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}
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else
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{
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writer.Write(true);
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writer.Write(path);
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}
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BITBinary.Write(writer,pars);
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var bytes = ms.ToArray();
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await ms.DisposeAsync();
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await writer.DisposeAsync();
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_sendQueue.Enqueue((id,bytes));
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var startTime = _now;
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while (true)
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{
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var time = _now - startTime;
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if(time.TotalSeconds>5)
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throw new TimeoutException($"等待超时,Id:{id},时间{time.TotalSeconds}");
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if (_p2p.TryRemove(index, out var value))
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{
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//await BITApp.SwitchToMainThread();
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if (value is Exception e)
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{
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throw e;
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}
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if (UniTask.CompletedTask is T t)
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{
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return t;
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}
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if (typeof(T) == typeof(UniTaskVoid))
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{
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return default;
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}
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return (T)value;
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}
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await Task.Delay(_interval);
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}
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}
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public void AddRpcHandle(object rpcHandle)
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{
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foreach (var methodInfo in rpcHandle.GetType().GetMethods())
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{
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var att = methodInfo.GetCustomAttribute<NetRpcAttribute>();
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if(att is null)continue;
|
|
_rpcMethods.TryAdd(methodInfo.Name, methodInfo);
|
|
_rpcHandles.TryAdd(methodInfo.Name, rpcHandle);
|
|
}
|
|
foreach (var eventInfo in rpcHandle.GetType().GetEvents())
|
|
{
|
|
var att = eventInfo.GetCustomAttribute<NetRpcAttribute>();
|
|
if(att is null)continue;
|
|
|
|
_rpcEvents.TryAdd(eventInfo.Name, eventInfo);
|
|
_rpcHandles.TryAdd(eventInfo.Name, rpcHandle);
|
|
}
|
|
|
|
}
|
|
[NetRpc]
|
|
public string MyRpcTest(string hello)
|
|
{
|
|
return "Hello World";
|
|
}
|
|
[NetRpc]
|
|
public async UniTask<string> MyRpcTestAsync(string hello)
|
|
{
|
|
await Task.Delay(1000);
|
|
return $"{hello} World";
|
|
}
|
|
|
|
public void AddCommandListener<T>(Action<T> handle)
|
|
{
|
|
_events.AddListener<T>(handle);
|
|
}
|
|
|
|
public void AddCommandListener<T>(Func<T,UniTask<T>> func)
|
|
{
|
|
_rpc.TryAdd(typeof(T).FullName, F);
|
|
return;
|
|
|
|
async UniTask<object> F(object o)
|
|
{
|
|
return await func.Invoke((T)o);
|
|
}
|
|
}
|
|
public void RemoveCommandListener<T>(Func<T,UniTask<T>> func)
|
|
{
|
|
_rpc.TryRemove(typeof(T).FullName, out _);
|
|
}
|
|
public void AddCommandListenerWithId<T>(Action<int, T> handle)
|
|
{
|
|
_events.AddListenerDirect(typeof(T).FullName, Callback);
|
|
return;
|
|
|
|
void Callback(object value)
|
|
{
|
|
if (value is ValueTuple<int, object> tuple && tuple.Item2 is T)
|
|
{
|
|
handle.Invoke(tuple.Item1, (T)tuple.Item2);
|
|
}
|
|
else
|
|
{
|
|
Console.WriteLine(value);
|
|
}
|
|
}
|
|
}
|
|
|
|
public void KickClient(int id)
|
|
{
|
|
server.Disconnect(id);
|
|
}
|
|
|
|
public void RemoveCommandListener<T>(Action<T> handle)
|
|
{
|
|
_events.RemoveListener<T>(handle);
|
|
}
|
|
|
|
public void RemoveCommandListener<T>(Func<string, T> func)
|
|
{
|
|
throw new NotImplementedException();
|
|
}
|
|
|
|
public void SendRT(string rpcName, params object[] pars)
|
|
{
|
|
throw new NotImplementedException("服务端不支持此方法");
|
|
}
|
|
|
|
public void SendTargetRT(int id, string rpcName, params object[] pars)
|
|
{
|
|
using var ms = new MemoryStream();
|
|
using var writer = new BinaryWriter(ms);
|
|
writer.Write((byte)NetCommandType.TargetRpc);
|
|
writer.Write(rpcName);
|
|
BITBinary.Write(writer,pars);
|
|
var bytes = ms.ToArray();
|
|
_sendQueue.Enqueue((id,bytes));
|
|
}
|
|
|
|
public void SendAllRT(string rpcName, params object[] pars)
|
|
{
|
|
using var ms = new MemoryStream();
|
|
using var writer = new BinaryWriter(ms);
|
|
writer.Write((byte)NetCommandType.AllRpc);
|
|
writer.Write(rpcName);
|
|
BITBinary.Write(writer,pars);
|
|
var bytes = ms.ToArray();
|
|
foreach (var id in server.connections.Keys)
|
|
{
|
|
_sendQueue.Enqueue((id,bytes));
|
|
}
|
|
}
|
|
}
|
|
} |