Unity聊天室实现

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本文的通信协议采用的基于TCP协议实现的。然后通过Unity的NGUI插件，实现聊天室场景。把Unity作为客户端，服务器端以C#实现的。实现效果如下图：

上述效果，是开启了两个客户端，然后与服务器通信。思路大致是：首先服务器先接收数据，然后再将客户端发来的消息广播出去。
具体代码如下：
C#服务器端：
Client.cs：处理每个客户端的通信逻辑

using System;using System.Net.Sockets;using System.Text;using System.Threading;namespace _010_聊天室_socket_tcp服务器端{    class Client    {        private Socket clientSocket;        private Thread t; //定义成字段，方便管理该线程        private byte[] data = new byte[1024];        public Client(Socket s)        {            this.clientSocket = s;            //启动一个线程处理客户端的数据接收            t = new Thread(ReceiveMessage);            t.Start();        }        private void ReceiveMessage()        {            //一直接收客户端的数据            while (true)            {                //在接收数据之前 判断Socket连接是否断开                if (!clientSocket.Poll(10,SelectMode.SelectRead))                {                    int length = clientSocket.Receive(data);                    string message = Encoding.UTF8.GetString(data, 0, length);                    //TODO:接收到数据的时候要把这个数据分发到客户端                    //广播这个消息                    Program.BroadCastMessage(message);                    Console.WriteLine("客户端发来消息：" + message);                }                else                {                    clientSocket.Close();                    break; //跳出循环，终止线程的执行。                }            }        }        public void SendMessage(string message)        {            byte[] data = Encoding.UTF8.GetBytes(message);            clientSocket.Send(data);        }        public bool Connected {            get { return clientSocket.Connected; }        }    }}

Program.cs

using System;using System.Collections.Generic;using System.Net;using System.Net.Sockets;namespace _010_聊天室_socket_tcp服务器端{    class Program    {        public static  List<Client> clientList = new List<Client>();        public static int Count = 0;//判断连接了几个客户端        /// <summary>        /// 广播消息        /// </summary>        /// <param name="message"></param>        public static void BroadCastMessage(string message)        {            var notConnectedList = new List<Client>();            foreach (var client in clientList)            {                if(client.Connected)                    client.SendMessage(message);                else                {                    //将断开连接的客户端保存在新建的List集合当中，方便在下次遍历是移除                    notConnectedList.Add(client);                }            }            //移除断开连接的客户端            foreach (var temp in notConnectedList)            {                clientList.Remove(temp);                Count--;            }        }        static void Main(string[] args)        {            //1.新建一个Socket            Socket serverSocket = new Socket(AddressFamily.InterNetwork,            SocketType.Stream, ProtocolType.Tcp);            Console.WriteLine("Server Running.");            //2.绑定端口号            serverSocket.Bind(new IPEndPoint(IPAddress.Parse("127.0.0.1"),7788 ));            //3.服务器端开启监听            serverSocket.Listen(100); //最大的客户端数量为100            //4.循环接收客户端的请求            while (true)            {                Socket clientSocket = serverSocket.Accept();//此处等待客户端连接，直到有连接才执行下面代码                Console.WriteLine("A client is connected.");                //把与每个客户端通信的逻辑（收发消息）放到Client类里面处理                Client client = new Client(clientSocket);                clientList.Add(client);                Count++;            }         }    }}

U3D客户端代码如下：

using System.Collections;using System.Collections.Generic;using System.Net;using System.Net.Sockets;using System.Text;using System.Threading;using UnityEngine;public class ChatManager : MonoBehaviour{    public UIInput textInput;    public UILabel chatLabel;    public string ipaddress = "127.0.0.1";    public int port = 7788;    private Socket clientSocket;    private Thread t;    private  byte[] data = new byte[1024];    private string message = "";    // Use this for initialization    void Start ()    {        ConnectToServer();    }    // Update is called once per frame    void Update () {        if (message != null && message != "")        {            chatLabel.text += "\n" + message;            message = ""; //清空消息        }    }    void ConnectToServer()    {        clientSocket = new Socket(AddressFamily.InterNetwork,SocketType.Stream, ProtocolType.Tcp);        //跟服务器建立连接        clientSocket.Connect(new IPEndPoint(IPAddress.Parse(ipaddress),port));        //创建一个新的线程来不停的接收消息        t = new Thread(ReceiveMessage);        t.Start();    }    /// <summary>    /// 用于循环接收消息    /// </summary>    void ReceiveMessage()    {        while (true)        {            if(clientSocket.Connected == false)                break;            int length = clientSocket.Receive(data);            message = Encoding.UTF8.GetString(data, 0, length);            //Unity不允许在线程里面操作Unity里面的组件,因此需要在Update()方法里面执行            //chatLabel.text += "\n" + message;        }    }    void SendMessage(string message)    {        byte[] data = Encoding.UTF8.GetBytes(message);        clientSocket.Send(data);    }    public void OnSendButtonClick()    {        string value = textInput.value;        SendMessage(value);        textInput.value = "";    }    void OnDestroy()    {        clientSocket.Shutdown(SocketShutdown.Both);        clientSocket.Close(); //关闭连接    }}

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