391 lines
14 KiB
C#
391 lines
14 KiB
C#
using kcp2k;
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using Mirror;
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using Mirror.SimpleWeb;
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using Newtonsoft.Json;
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using System;
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using System.Collections;
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using System.Collections.Generic;
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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 UnityEngine;
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using UnityEngine.Events;
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using UnityEngine.Networking;
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namespace LightReflectiveMirror
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{
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[DefaultExecutionOrder(1001)]
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public partial class LightReflectiveMirrorTransport : Transport
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{
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private void OnConnectedToRelay() => _connectedToRelay = true;
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public bool IsAuthenticated() => _isAuthenticated;
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private void Awake()
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{
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if (clientToServerTransport is LightReflectiveMirrorTransport)
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throw new Exception("Haha real funny... Use a different transport.");
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_directConnectModule = GetComponent<LRMDirectConnectModule>();
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if (_directConnectModule != null)
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{
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if (useNATPunch && !_directConnectModule.SupportsNATPunch())
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{
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Debug.LogWarning("LRM | NATPunch is turned on but the transport used does not support it. It will be disabled.");
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useNATPunch = false;
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}
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}
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SetupCallbacks();
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if (connectOnAwake)
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ConnectToRelay();
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InvokeRepeating(nameof(SendHeartbeat), heartBeatInterval, heartBeatInterval);
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}
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private void SetupCallbacks()
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{
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if (_callbacksInitialized)
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return;
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_callbacksInitialized = true;
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clientToServerTransport.OnClientConnected = OnConnectedToRelay;
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clientToServerTransport.OnClientDataReceived = DataReceived;
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clientToServerTransport.OnClientDisconnected = Disconnected;
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}
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void Disconnected()
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{
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_connectedToRelay = false;
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_isAuthenticated = false;
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diconnectedFromRelay?.Invoke();
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}
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public void ConnectToRelay()
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{
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if (!useLoadBalancer)
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{
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if (!_connectedToRelay)
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{
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Connect(serverIP);
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}
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else
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{
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Debug.LogWarning("LRM | Already connected to relay!");
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}
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}
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else
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{
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if (!_connectedToRelay)
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{
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StartCoroutine(RelayConnect());
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}
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else
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{
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Debug.LogWarning("LRM | Already connected to relay!");
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}
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}
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}
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/// <summary>
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/// Connects to the desired relay
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/// </summary>
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/// <param name="serverIP"></param>
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private void Connect(string serverIP, ushort port = 7777)
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{
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// need to implement custom port
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if (clientToServerTransport is LightReflectiveMirrorTransport)
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throw new Exception("LRM | Client to Server Transport cannot be LRM.");
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SetTransportPort(port);
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this.serverIP = serverIP;
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_clientSendBuffer = new byte[clientToServerTransport.GetMaxPacketSize()];
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clientToServerTransport.ClientConnect(serverIP);
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}
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private void DisconnectFromRelay()
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{
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if (IsAuthenticated())
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{
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clientToServerTransport.ClientDisconnect();
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}
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}
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void SendHeartbeat()
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{
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if (_connectedToRelay)
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{
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int pos = 0;
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_clientSendBuffer.WriteByte(ref pos, 200);
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clientToServerTransport.ClientSend(0, new ArraySegment<byte>(_clientSendBuffer, 0, pos));
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if (_NATPuncher != null)
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_NATPuncher.Send(new byte[] { 0 }, 1, _relayPuncherIP);
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var keys = new List<IPEndPoint>(_serverProxies.GetAllKeys());
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for (int i = 0; i < keys.Count; i++)
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{
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if (DateTime.Now.Subtract(_serverProxies.GetByFirst(keys[i]).lastInteractionTime).TotalSeconds > 10)
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{
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_serverProxies.GetByFirst(keys[i]).Dispose();
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_serverProxies.Remove(keys[i]);
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}
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}
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}
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}
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void DataReceived(ArraySegment<byte> segmentData, int channel)
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{
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try
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{
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var data = segmentData.Array;
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int pos = segmentData.Offset;
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OpCodes opcode = (OpCodes)data.ReadByte(ref pos);
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switch (opcode)
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{
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case OpCodes.Authenticated:
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_isAuthenticated = true;
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break;
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case OpCodes.AuthenticationRequest:
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SendAuthKey();
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break;
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case OpCodes.GetData:
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var recvData = data.ReadBytes(ref pos);
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if (_isServer)
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{
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if (_connectedRelayClients.TryGetByFirst(data.ReadInt(ref pos), out int clientID))
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OnServerDataReceived?.Invoke(clientID, new ArraySegment<byte>(recvData), channel);
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}
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if (_isClient)
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OnClientDataReceived?.Invoke(new ArraySegment<byte>(recvData), channel);
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break;
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case OpCodes.ServerLeft:
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if (_isClient)
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{
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_isClient = false;
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OnClientDisconnected?.Invoke();
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}
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break;
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case OpCodes.PlayerDisconnected:
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if (_isServer)
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{
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int user = data.ReadInt(ref pos);
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if (_connectedRelayClients.TryGetByFirst(user, out int clientID))
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{
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OnServerDisconnected?.Invoke(clientID);
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_connectedRelayClients.Remove(user);
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}
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}
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break;
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case OpCodes.RoomCreated:
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serverId = data.ReadInt(ref pos);
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break;
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case OpCodes.ServerJoined:
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int clientId = data.ReadInt(ref pos);
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if (_isClient)
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{
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OnClientConnected?.Invoke();
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}
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if (_isServer)
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{
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_connectedRelayClients.Add(clientId, _currentMemberId);
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OnServerConnected?.Invoke(_currentMemberId);
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_currentMemberId++;
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}
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break;
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case OpCodes.DirectConnectIP:
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var ip = data.ReadString(ref pos);
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int port = data.ReadInt(ref pos);
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bool attemptNatPunch = data.ReadBool(ref pos);
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_directConnectEndpoint = new IPEndPoint(IPAddress.Parse(ip), port);
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if (useNATPunch && attemptNatPunch)
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{
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StartCoroutine(NATPunch(_directConnectEndpoint));
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}
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if (!_isServer)
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{
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if (_clientProxy == null && useNATPunch && attemptNatPunch)
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{
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_clientProxy = new SocketProxy(_NATIP.Port - 1);
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_clientProxy.dataReceived += ClientProcessProxyData;
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}
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if (useNATPunch && attemptNatPunch)
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_directConnectModule.JoinServer("127.0.0.1", _NATIP.Port - 1);
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else
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_directConnectModule.JoinServer(ip, port);
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}
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break;
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case OpCodes.RequestNATConnection:
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if (GetLocalIp() != null && _directConnectModule != null)
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{
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byte[] initalData = new byte[150];
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int sendPos = 0;
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initalData.WriteBool(ref sendPos, true);
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initalData.WriteString(ref sendPos, data.ReadString(ref pos));
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NATPunchtroughPort = data.ReadInt(ref pos);
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if (_NATPuncher == null)
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{
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_NATPuncher = new UdpClient { ExclusiveAddressUse = false };
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while (true)
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{
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try
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{
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_NATIP = new IPEndPoint(IPAddress.Parse(GetLocalIp()), UnityEngine.Random.Range(16000, 17000));
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_NATPuncher.Client.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.ReuseAddress, true);
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_NATPuncher.Client.Bind(_NATIP);
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break;
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}
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catch {} // Binding port is in use, keep trying :P
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}
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}
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IPAddress serverAddr;
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if (!IPAddress.TryParse(serverIP, out serverAddr))
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serverAddr = Dns.GetHostEntry(serverIP).AddressList[0];
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_relayPuncherIP = new IPEndPoint(IPAddress.Parse(serverIP), NATPunchtroughPort);
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// Send 3 to lower chance of it being dropped or corrupted when received on server.
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_NATPuncher.Send(initalData, sendPos, _relayPuncherIP);
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_NATPuncher.Send(initalData, sendPos, _relayPuncherIP);
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_NATPuncher.Send(initalData, sendPos, _relayPuncherIP);
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_NATPuncher.BeginReceive(new AsyncCallback(RecvData), _NATPuncher);
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}
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break;
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}
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}
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catch (Exception e) { print(e); }
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}
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public void SetTransportPort(ushort port)
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{
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if (clientToServerTransport is KcpTransport kcp)
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kcp.Port = port;
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if (clientToServerTransport is TelepathyTransport telepathy)
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telepathy.port = port;
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if (clientToServerTransport is SimpleWebTransport swt)
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swt.port = port;
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}
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public void UpdateRoomInfo(string newServerName = null, string newServerData = null, bool? newServerIsPublic = null, int? newPlayerCap = null)
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{
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if (_isServer)
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{
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int pos = 0;
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_clientSendBuffer.WriteByte(ref pos, (byte)OpCodes.UpdateRoomData);
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if (!string.IsNullOrEmpty(newServerName))
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{
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_clientSendBuffer.WriteBool(ref pos, true);
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_clientSendBuffer.WriteString(ref pos, newServerName);
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}
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else
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_clientSendBuffer.WriteBool(ref pos, false);
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if (!string.IsNullOrEmpty(newServerData))
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{
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_clientSendBuffer.WriteBool(ref pos, true);
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_clientSendBuffer.WriteString(ref pos, newServerData);
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}
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else
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_clientSendBuffer.WriteBool(ref pos, false);
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if (newServerIsPublic != null)
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{
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_clientSendBuffer.WriteBool(ref pos, true);
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_clientSendBuffer.WriteBool(ref pos, newServerIsPublic.Value);
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}
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else
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_clientSendBuffer.WriteBool(ref pos, false);
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if (newPlayerCap != null)
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{
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_clientSendBuffer.WriteBool(ref pos, true);
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_clientSendBuffer.WriteInt(ref pos, newPlayerCap.Value);
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}
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else
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_clientSendBuffer.WriteBool(ref pos, false);
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clientToServerTransport.ClientSend(0, new ArraySegment<byte>(_clientSendBuffer, 0, pos));
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}
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}
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Room GetServerForID(int serverID)
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{
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for(int i = 0; i < relayServerList.Count; i++)
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{
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if(relayServerList[i].serverId == serverId)
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return relayServerList[i];
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}
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throw new Exception("LRM | An attempt was made to connect to a server which does not exist!");
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}
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void SendAuthKey()
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{
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int pos = 0;
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_clientSendBuffer.WriteByte(ref pos, (byte)OpCodes.AuthenticationResponse);
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_clientSendBuffer.WriteString(ref pos, authenticationKey);
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clientToServerTransport.ClientSend(0, new ArraySegment<byte>(_clientSendBuffer, 0, pos));
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}
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public enum OpCodes
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{
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Default = 0, RequestID = 1, JoinServer = 2, SendData = 3, GetID = 4, ServerJoined = 5, GetData = 6, CreateRoom = 7, ServerLeft = 8, PlayerDisconnected = 9, RoomCreated = 10,
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LeaveRoom = 11, KickPlayer = 12, AuthenticationRequest = 13, AuthenticationResponse = 14, Authenticated = 17, UpdateRoomData = 18, ServerConnectionData = 19, RequestNATConnection = 20,
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DirectConnectIP = 21
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}
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private static string GetLocalIp()
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{
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var host = Dns.GetHostEntry(Dns.GetHostName());
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foreach (var ip in host.AddressList)
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{
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if (ip.AddressFamily == AddressFamily.InterNetwork)
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{
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return ip.ToString();
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}
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}
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return null;
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}
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}
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[Serializable]
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public struct Room
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{
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public string serverName;
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public int currentPlayers;
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public int maxPlayers;
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public int serverId;
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public string serverData;
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public RelayAddress relayInfo;
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}
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[Serializable]
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public struct RelayAddress
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{
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public ushort Port;
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public ushort EndpointPort;
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public string Address;
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}
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}
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