927 lines
23 KiB
C#
927 lines
23 KiB
C#
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.Sockets;
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using System.Text;
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using System.Threading;
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using UnityEngine;
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using System.Net;
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using UnityEngine.SceneManagement;
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using System.Runtime.Serialization.Formatters.Binary;
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using System.Runtime.Serialization;
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using System.IO;
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namespace VelNet
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{
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[AddComponentMenu("VelNet/VelNet Manager")]
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public class VelNetBinaryManager : MonoBehaviour
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{
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public enum MessageSendType
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{
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LOGIN = 0,
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GET_ROOMS = 1,
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JOIN_ROOM = 2,
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MESSAGE_OTHERS = 3,
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MESSAGE_ALL = 4,
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MESSAGE_GROUP = 5,
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FORM_GROUP = 6
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};
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public enum MessageReceiveType
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{
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LOGGED_IN = 0,
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ROOM_LIST = 1,
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CLIENT_JOINED = 2,
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MESSAGE = 3
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};
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public string host;
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public int port;
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public static VelNetBinaryManager instance;
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private TcpClient socketConnection;
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private Socket udpSocket;
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public bool udpConnected;
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private IPEndPoint RemoteEndPoint;
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private Thread clientReceiveThread;
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private Thread clientReceiveThreadUDP;
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public int userid = -1;
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public string room;
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private int messagesReceived = 0;
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public readonly Dictionary<int, VelNetPlayer> players = new Dictionary<int, VelNetPlayer>();
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/// <summary>
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/// We just joined a room
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/// string - the room name
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/// </summary>
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public static Action<string> OnJoinedRoom;
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/// <summary>
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/// We just left a room
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/// string - the room name we left
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/// </summary>
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public static Action<string> OnLeftRoom;
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/// <summary>
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/// Somebody else just joined our room
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/// </summary>
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public static Action<VelNetPlayer> OnPlayerJoined;
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/// <summary>
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/// Somebody else just left our room
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/// </summary>
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public static Action<VelNetPlayer> OnPlayerLeft;
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public static Action OnConnectedToServer;
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public static Action<Message> MessageReceived;
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public static Action LoggedIn;
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public static Action<string[], int> RoomsReceived;
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public bool connected;
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public List<NetworkObject> prefabs = new List<NetworkObject>();
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public NetworkObject[] sceneObjects;
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public List<string> deletedSceneObjects = new List<string>();
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/// <summary>
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/// Maintains a list of all known objects on the server (ones that have ids)
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/// </summary>
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public readonly Dictionary<string, NetworkObject> objects = new Dictionary<string, NetworkObject>();
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/// <summary>
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/// Maintains a list of all known groups on the server
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/// </summary>
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public readonly Dictionary<string, List<int>> groups = new Dictionary<string, List<int>>();
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private VelNetPlayer masterPlayer;
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public static VelNetPlayer LocalPlayer => instance.players.Where(p => p.Value.isLocal).Select(p => p.Value).FirstOrDefault();
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public static bool InRoom => LocalPlayer != null && LocalPlayer.room != "-1" && LocalPlayer.room != "";
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// Use this for initialization
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public class Message
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{
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public MessageReceiveType type;
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//public string text;
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public byte[] data;
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public int sender;
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}
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public readonly List<Message> receivedMessages = new List<Message>();
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private void Awake()
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{
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if (instance != null)
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{
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Debug.LogError("Multiple NetworkManagers detected! Bad!", this);
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}
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instance = this;
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SceneManager.sceneLoaded += (scene, mode) =>
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{
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// add all local network objects
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sceneObjects = FindObjectsOfType<NetworkObject>().Where(o => o.isSceneObject).ToArray();
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};
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}
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private IEnumerator Start()
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{
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ConnectToTcpServer();
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yield return null;
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try
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{
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OnConnectedToServer?.Invoke();
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}
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// prevent errors in subscribers from breaking our code
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catch (Exception e)
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{
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Debug.LogError(e);
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}
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}
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private void AddMessage(Message m)
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{
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lock (receivedMessages)
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{
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//Debug.Log(messagesReceived++);
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receivedMessages.Add(m);
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}
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}
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private void Update()
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{
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lock (receivedMessages)
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{
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//the main thread, which can do Unity stuff
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foreach (Message m in receivedMessages)
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{
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switch (m.type)
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{
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// when you join the server
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case 0:
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userid = m.sender;
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Debug.Log("joined server " + userid);
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try
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{
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LoggedIn?.Invoke();
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}
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// prevent errors in subscribers from breaking our code
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catch (Exception e)
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{
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Debug.LogError(e);
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}
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//start the udp thread
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clientReceiveThreadUDP = new Thread(ListenForDataUDP);
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clientReceiveThreadUDP.IsBackground = true;
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clientReceiveThreadUDP.Start();
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break;
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/*
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// if this message is for me, that means I joined a new room...
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case 2 when userid == m.sender:
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{
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string oldRoom = LocalPlayer?.room;
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// we clear the list, but will recreate as we get messages from people in our room
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players.Clear();
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masterPlayer = null;
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if (m.text != "")
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{
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VelNetPlayer player = new VelNetPlayer
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{
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isLocal = true,
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userid = m.sender,
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room = m.text
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};
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players.Add(userid, player);
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if (m.text != "")
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{
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try
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{
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OnJoinedRoom?.Invoke(m.text);
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}
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// prevent errors in subscribers from breaking our code
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catch (Exception e)
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{
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Debug.LogError(e);
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}
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}
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}
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// we just left a room
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else
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{
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// delete all networkobjects that aren't sceneobjects or are null now
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objects
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.Where(kvp => kvp.Value == null || !kvp.Value.isSceneObject)
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.Select(o => o.Key)
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.ToList().ForEach(NetworkDestroy);
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// then remove references to the ones that are left
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objects.Clear();
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// empty all the groups
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foreach (string group in instance.groups.Keys)
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{
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SetupMessageGroup(group, new List<int>());
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}
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instance.groups.Clear();
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try
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{
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OnLeftRoom?.Invoke(oldRoom);
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}
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// prevent errors in subscribers from breaking our code
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catch (Exception e)
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{
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Debug.LogError(e);
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}
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}
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break;
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}
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// not for me, a player is joining or leaving
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case 2:
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{
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VelNetPlayer me = players[userid];
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if (me.room != m.text)
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{
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// we got a left message, kill it
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// change ownership of all objects to master
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List<string> deleteObjects = new List<string>();
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foreach (KeyValuePair<string, NetworkObject> kvp in objects)
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{
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if (kvp.Value.owner == players[m.sender]) // the owner is the player that left
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{
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// if this object has locked ownership, delete it
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if (kvp.Value.ownershipLocked)
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{
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deleteObjects.Add(kvp.Value.networkId);
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}
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// I'm the local master player, so can take ownership immediately
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else if (me.isLocal && me == masterPlayer)
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{
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TakeOwnership(kvp.Key);
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}
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// the master player left, so everyone should set the owner null (we should get a new master shortly)
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else if (players[m.sender] == masterPlayer)
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{
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kvp.Value.owner = null;
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}
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}
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}
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// TODO this may check for ownership in the future. We don't need ownership here
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deleteObjects.ForEach(NetworkDestroy);
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players.Remove(m.sender);
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}
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else
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{
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// we got a join message, create it
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VelNetPlayer player = new VelNetPlayer
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{
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isLocal = false,
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room = m.text,
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userid = m.sender
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};
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players.Add(m.sender, player);
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try
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{
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OnPlayerJoined?.Invoke(player);
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}
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// prevent errors in subscribers from breaking our code
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catch (Exception e)
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{
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Debug.LogError(e);
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}
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}
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break;
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}
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// generic message
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case 3:
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if (players.ContainsKey(m.sender))
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{
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players[m.sender]?.HandleMessage(m);
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}
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else
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{
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Debug.LogError("Received message from player that doesn't exist: " + m.text);
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}
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break;
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// change master player (this should only happen when the first player joins or if the master player leaves)
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case 4:
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{
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if (masterPlayer == null)
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{
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masterPlayer = players[m.sender];
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// no master player yet, add the scene objects
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for (int i = 0; i < sceneObjects.Length; i++)
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{
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sceneObjects[i].networkId = -1 + "-" + i;
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sceneObjects[i].owner = masterPlayer;
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sceneObjects[i].isSceneObject = true; // needed for special handling when deleted
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objects.Add(sceneObjects[i].networkId, sceneObjects[i]);
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}
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}
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else
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{
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masterPlayer = players[m.sender];
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}
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masterPlayer.SetAsMasterPlayer();
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// master player should take over any objects that do not have an owner
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foreach (KeyValuePair<string, NetworkObject> kvp in objects)
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{
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kvp.Value.owner ??= masterPlayer;
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}
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break;
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}
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*/
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}
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MessageReceived?.Invoke(m);
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}
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receivedMessages.Clear();
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}
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}
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private void OnApplicationQuit()
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{
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socketConnection.Close();
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}
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/// <summary>
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/// Setup socket connection.
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/// </summary>
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private void ConnectToTcpServer()
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{
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try
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{
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clientReceiveThread = new Thread(ListenForData);
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clientReceiveThread.IsBackground = true;
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clientReceiveThread.Start();
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}
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catch (Exception e)
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{
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Debug.Log("On client connect exception " + e);
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}
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}
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private void HandleMessage(string s) // this parses messages from the server, and adds them to a queue to be processed on the main thread
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{
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/*
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// Debug.Log("Received: " + s);
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Message m = new Message();
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string[] sections = s.Split(':');
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if (sections.Length <= 0) return;
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int type = int.Parse(sections[0]);
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switch (type)
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{
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case 0: // logged in message
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{
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if (sections.Length > 1)
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{
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m.type = type;
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m.sender = int.Parse(sections[1]);
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m.text = "";
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AddMessage(m);
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}
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break;
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}
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case 1: // room info message
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{
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break;
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}
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case 2: // joined room message
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{
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if (sections.Length > 2)
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{
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m.type = 2;
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int user_id = int.Parse(sections[1]);
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m.sender = user_id;
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string new_room = sections[2];
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m.text = new_room;
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AddMessage(m);
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}
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break;
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}
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case 3: // text message
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{
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if (sections.Length > 2)
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{
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m.type = 3;
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m.sender = int.Parse(sections[1]);
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m.text = sections[2];
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AddMessage(m);
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}
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break;
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}
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case 4: // change master client
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{
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if (sections.Length > 1)
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{
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m.type = 4;
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m.sender = int.Parse(sections[1]);
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AddMessage(m);
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}
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break;
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}
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}*/
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}
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/// <summary>
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/// Runs in background clientReceiveThread; Listens for incomming data.
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/// </summary>
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///
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private byte[] ReadExact(NetworkStream stream, int N)
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{
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byte[] toReturn = new byte[N];
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int numRead = 0;
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int numLeft = N;
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while (numLeft > 0)
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{
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numRead += stream.Read(toReturn, numRead, numLeft);
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numLeft = N - numRead;
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}
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return toReturn;
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}
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private uint GetUintFromBytes(byte[] bytes)
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{
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if (BitConverter.IsLittleEndian)
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{
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return BitConverter.ToUInt32(bytes.Reverse().ToArray(),0);
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}
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else
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{
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return BitConverter.ToUInt32(bytes, 0);
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}
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}
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private void ListenForData()
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{
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connected = true;
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try
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{
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socketConnection = new TcpClient(host, port);
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socketConnection.NoDelay = true;
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byte[] bytes = new byte[1024];
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Login("Kyle", "Johnsen");
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//Join("MyRoom");
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//SendTo(MessageSendType.MESSAGE_OTHERS, Encoding.UTF8.GetBytes("Hello"));
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//FormGroup("close", new List<uint> { 1 });
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//SendToGroup("close", Encoding.UTF8.GetBytes("HelloGroup"));
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while (true)
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{
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// Get a stream object for reading
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using NetworkStream stream = socketConnection.GetStream();
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int length;
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//read a byte
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byte type = (byte)stream.ReadByte();
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if(type == 0)
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{
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//read the id (this is my network id)
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Message m = new Message();
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m.sender = (int)GetUintFromBytes(ReadExact(stream, 4));
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m.data = new byte[0]; //no data
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m.type = 0;
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AddMessage(m);
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}
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else if(type == 1)
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{
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//rooms message
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}else if(type == 2)
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{
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//join message
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}else if(type == 3)
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{
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//message from client over tcp
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}
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// Read incomming stream into byte arrary.
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while ((length = stream.Read(bytes, 0, bytes.Length)) != 0)
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{
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Debug.Log("read " + length + " bytes!");
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string t = "";
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for(int i = 0; i < length; i++)
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{
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t = t + "," + bytes[i];
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}
|
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Debug.Log(t);
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//byte[] incommingData = new byte[length];
|
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//Array.Copy(bytes, 0, incommingData, 0, length);
|
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//// Convert byte array to string message.
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//string serverMessage = Encoding.ASCII.GetString(incommingData);
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//string[] sections = serverMessage.Split('\n');
|
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//if (sections.Length > 1)
|
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//{
|
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// lock (receivedMessages)
|
|
// {
|
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// for (int i = 0; i < sections.Length - 1; i++)
|
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// {
|
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// if (i == 0)
|
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// {
|
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// HandleMessage(partialMessage + sections[0]);
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// partialMessage = "";
|
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// }
|
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// else
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// {
|
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// HandleMessage(sections[i]);
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// }
|
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// }
|
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// }
|
|
//}
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|
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//partialMessage = partialMessage + sections[sections.Length - 1];
|
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}
|
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}
|
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}
|
|
|
|
|
|
catch (Exception socketException)
|
|
{
|
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Debug.Log("Socket exception: " + socketException);
|
|
}
|
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|
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connected = false;
|
|
}
|
|
|
|
private void ListenForDataUDP()
|
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{
|
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//I don't yet have a UDP connection
|
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try
|
|
{
|
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IPAddress[] addresses = Dns.GetHostAddresses(host);
|
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Debug.Assert(addresses.Length > 0);
|
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RemoteEndPoint = new IPEndPoint(addresses[0], port);
|
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|
|
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udpSocket = new Socket(AddressFamily.InterNetwork,
|
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SocketType.Dgram, ProtocolType.Udp);
|
|
|
|
|
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udpConnected = false;
|
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byte[] buffer = new byte[1024];
|
|
while (true)
|
|
{
|
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buffer[0] = 0;
|
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Array.Copy(get_be_bytes((uint)userid), 0, buffer, 1, 4);
|
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udpSocket.SendTo(buffer, 5, SocketFlags.None, RemoteEndPoint);
|
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|
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if (udpSocket.Available == 0)
|
|
{
|
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Thread.Sleep(100);
|
|
Debug.Log("Waiting for UDP response");
|
|
}
|
|
else
|
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{
|
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break;
|
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}
|
|
}
|
|
|
|
udpConnected = true;
|
|
while (true)
|
|
{
|
|
int numReceived = udpSocket.Receive(buffer);
|
|
|
|
|
|
if (buffer[0] == 0)
|
|
{
|
|
Debug.Log("UDP connected");
|
|
}else if (buffer[0] == 3)
|
|
{
|
|
//we should get the sender address
|
|
byte[] senderBytes = new byte[4];
|
|
Array.Copy(buffer, 1, senderBytes, 0, 4);
|
|
uint senderId = GetUintFromBytes(senderBytes);
|
|
byte[] messageBytes = new byte[numReceived - 5];
|
|
Array.Copy(buffer, 5, messageBytes, 0, messageBytes.Length);
|
|
Message m = new Message();
|
|
m.sender = (int)senderId;
|
|
m.data = messageBytes;
|
|
m.type = MessageReceiveType.MESSAGE;
|
|
}
|
|
|
|
|
|
|
|
|
|
}
|
|
}
|
|
catch (Exception socketException)
|
|
{
|
|
Debug.Log("Socket exception: " + socketException);
|
|
}
|
|
}
|
|
|
|
private static void SendUdpMessage(string message)
|
|
{
|
|
if (instance.udpSocket == null || !instance.udpConnected)
|
|
{
|
|
return;
|
|
}
|
|
|
|
byte[] data = Encoding.UTF8.GetBytes(message);
|
|
//Debug.Log("Attempting to send: " + message);
|
|
instance.udpSocket.SendTo(data, data.Length, SocketFlags.None, instance.RemoteEndPoint);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Send message to server using socket connection.
|
|
/// </summary>
|
|
private static void SendNetworkMessage(byte[] message)
|
|
{
|
|
// Debug.Log("Sent: " + clientMessage);
|
|
if (instance.socketConnection == null)
|
|
{
|
|
return;
|
|
}
|
|
|
|
try
|
|
{
|
|
// Get a stream object for writing.
|
|
NetworkStream stream = instance.socketConnection.GetStream();
|
|
if (stream.CanWrite)
|
|
{
|
|
|
|
stream.Write(message,0,message.Length);
|
|
}
|
|
}
|
|
catch (SocketException socketException)
|
|
{
|
|
Debug.Log("Socket exception: " + socketException);
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Connects to the server with a username
|
|
/// </summary>
|
|
///
|
|
public static byte[] get_be_bytes(uint n)
|
|
{
|
|
return BitConverter.GetBytes(n).Reverse().ToArray();
|
|
}
|
|
public static void Login(string username, string password)
|
|
{
|
|
|
|
MemoryStream stream = new MemoryStream();
|
|
BinaryWriter writer = new BinaryWriter(stream);
|
|
|
|
byte[] uB = Encoding.UTF8.GetBytes(username);
|
|
byte[] pB = Encoding.UTF8.GetBytes(password);
|
|
writer.Write((byte)MessageSendType.LOGIN);
|
|
writer.Write((byte)uB.Length);
|
|
writer.Write(uB);
|
|
writer.Write((byte)pB.Length);
|
|
writer.Write(pB);
|
|
|
|
SendNetworkMessage(stream.ToArray());
|
|
|
|
|
|
}
|
|
|
|
/// <summary>
|
|
/// Joins a room by name
|
|
/// </summary>
|
|
/// <param name="roomname">The name of the room to join</param>
|
|
public static void Join(string roomname)
|
|
{
|
|
MemoryStream stream = new MemoryStream();
|
|
BinaryWriter writer = new BinaryWriter(stream);
|
|
|
|
byte[] R = Encoding.UTF8.GetBytes(roomname);
|
|
writer.Write((byte)MessageSendType.JOIN_ROOM);
|
|
writer.Write((byte)R.Length);
|
|
writer.Write(R);
|
|
SendNetworkMessage(stream.ToArray());
|
|
|
|
|
|
|
|
|
|
}
|
|
|
|
public static void FormGroup(string groupname, List<uint> client_ids)
|
|
{
|
|
MemoryStream stream = new MemoryStream();
|
|
BinaryWriter writer = new BinaryWriter(stream);
|
|
byte[] R = Encoding.UTF8.GetBytes(groupname);
|
|
writer.Write((byte)MessageSendType.FORM_GROUP);
|
|
writer.Write((byte)R.Length);
|
|
writer.Write(R);
|
|
writer.Write(get_be_bytes((uint)client_ids.Count*4));
|
|
for(int i = 0; i < client_ids.Count; i++)
|
|
{
|
|
writer.Write(get_be_bytes(client_ids[i]));
|
|
}
|
|
SendNetworkMessage(stream.ToArray());
|
|
}
|
|
|
|
/// <summary>
|
|
/// Leaves a room if we're in one
|
|
/// </summary>
|
|
public static void Leave()
|
|
{
|
|
//if (InRoom) SendNetworkMessage("2:-1");
|
|
}
|
|
|
|
public static void SendTo(MessageSendType type, byte[] message, bool reliable = true)
|
|
{
|
|
MemoryStream stream = new MemoryStream();
|
|
BinaryWriter writer = new BinaryWriter(stream);
|
|
|
|
writer.Write((byte)3);
|
|
writer.Write(get_be_bytes((uint)message.Length));
|
|
writer.Write(message);
|
|
|
|
if (reliable)
|
|
{
|
|
SendNetworkMessage(stream.ToArray());
|
|
|
|
//SendNetworkMessage("3:" + (int)type + ":" + message);
|
|
}
|
|
else
|
|
{
|
|
SendUdpMessage(instance.userid + ":3:" + (int)type + ":" + message);
|
|
}
|
|
}
|
|
|
|
public static void SendTo(MessageSendType type, string message, bool reliable = true)
|
|
{
|
|
if (reliable)
|
|
{
|
|
//SendNetworkMessage("3:" + (int)type + ":" + message);
|
|
}
|
|
else
|
|
{
|
|
SendUdpMessage(instance.userid + ":3:" + (int)type + ":" + message);
|
|
}
|
|
}
|
|
|
|
public static void SendToGroup(string group, byte[] message, bool reliable = true)
|
|
{
|
|
MemoryStream stream = new MemoryStream();
|
|
BinaryWriter writer = new BinaryWriter(stream);
|
|
|
|
writer.Write((byte)MessageSendType.MESSAGE_GROUP);
|
|
writer.Write(get_be_bytes((uint)message.Length));
|
|
writer.Write(message);
|
|
writer.Write((byte)group.Length);
|
|
writer.Write(Encoding.UTF8.GetBytes(group));
|
|
|
|
if (reliable)
|
|
{
|
|
SendNetworkMessage(stream.ToArray());
|
|
|
|
//SendNetworkMessage("3:" + (int)type + ":" + message);
|
|
}
|
|
else
|
|
{
|
|
//SendUdpMessage(instance.userid + ":3:" + (int)type + ":" + message);
|
|
}
|
|
}
|
|
|
|
public static void SendToGroup(string group, string message, bool reliable = true)
|
|
{
|
|
if (reliable)
|
|
{
|
|
//SendNetworkMessage("4:" + group + ":" + message);
|
|
}
|
|
else
|
|
{
|
|
SendUdpMessage(instance.userid + ":4:" + group + ":" + message);
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// changes the designated group that sendto(4) will go to
|
|
/// </summary>
|
|
public static void SetupMessageGroup(string groupName, List<int> userIds)
|
|
{
|
|
if (userIds.Count > 0)
|
|
{
|
|
instance.groups[groupName] = userIds.ToList();
|
|
}
|
|
|
|
//SendNetworkMessage($"5:{groupName}:{string.Join(":", userIds)}");
|
|
}
|
|
|
|
|
|
public static NetworkObject InstantiateNetworkObject(string prefabName)
|
|
{
|
|
VelNetPlayer localPlayer = LocalPlayer;
|
|
NetworkObject prefab = instance.prefabs.Find(p => p.name == prefabName);
|
|
if (prefab == null)
|
|
{
|
|
Debug.LogError("Couldn't find a prefab with that name: " + prefabName);
|
|
return null;
|
|
}
|
|
|
|
string networkId = localPlayer.userid + "-" + localPlayer.lastObjectId++;
|
|
if (instance.objects.ContainsKey(networkId))
|
|
{
|
|
Debug.LogError("Can't instantiate object. Obj with that network ID was already instantiated.", instance.objects[networkId]);
|
|
return null;
|
|
}
|
|
NetworkObject newObject = Instantiate(prefab);
|
|
newObject.networkId = networkId;
|
|
newObject.prefabName = prefabName;
|
|
newObject.owner = localPlayer;
|
|
instance.objects.Add(newObject.networkId, newObject);
|
|
|
|
// only sent to others, as I already instantiated this. Nice that it happens immediately.
|
|
SendTo(MessageSendType.MESSAGE_OTHERS, "7," + newObject.networkId + "," + prefabName);
|
|
|
|
return newObject;
|
|
}
|
|
|
|
public static void SomebodyInstantiatedNetworkObject(string networkId, string prefabName, VelNetPlayer owner)
|
|
{
|
|
NetworkObject prefab = instance.prefabs.Find(p => p.name == prefabName);
|
|
if (prefab == null) return;
|
|
NetworkObject newObject = Instantiate(prefab);
|
|
newObject.networkId = networkId;
|
|
newObject.prefabName = prefabName;
|
|
newObject.owner = owner;
|
|
instance.objects.Add(newObject.networkId, newObject);
|
|
}
|
|
|
|
public static void NetworkDestroy(NetworkObject obj)
|
|
{
|
|
NetworkDestroy(obj.networkId);
|
|
}
|
|
|
|
public static void NetworkDestroy(string networkId)
|
|
{
|
|
if (!instance.objects.ContainsKey(networkId)) return;
|
|
NetworkObject obj = instance.objects[networkId];
|
|
if (obj == null)
|
|
{
|
|
instance.objects.Remove(networkId);
|
|
return;
|
|
}
|
|
if (obj.isSceneObject)
|
|
{
|
|
instance.deletedSceneObjects.Add(networkId);
|
|
}
|
|
|
|
Destroy(obj.gameObject);
|
|
instance.objects.Remove(networkId);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Takes local ownership of an object by id.
|
|
/// </summary>
|
|
/// <param name="networkId">Network ID of the object to transfer</param>
|
|
/// <returns>True if successfully transferred, False if transfer message not sent</returns>
|
|
public static bool TakeOwnership(string networkId)
|
|
{
|
|
// local player must exist
|
|
if (LocalPlayer == null) return false;
|
|
|
|
// obj must exist
|
|
if (!instance.objects.ContainsKey(networkId)) return false;
|
|
|
|
// if the ownership is locked, fail
|
|
if (instance.objects[networkId].ownershipLocked) return false;
|
|
|
|
// immediately successful
|
|
instance.objects[networkId].owner = LocalPlayer;
|
|
|
|
// must be ordered, so that ownership transfers are not confused. Also sent to all players, so that multiple simultaneous requests will result in the same outcome.
|
|
SendTo(MessageSendType.MESSAGE_ALL, "6," + networkId);
|
|
|
|
return true;
|
|
}
|
|
}
|
|
} |