如何用Unity实现局域网聊天室功能

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整体过程分为两部分：构建服务端、构建客户端。

服务端：

大概思路：

1. 声明Socket连接以及绑定IP和端口，这里面使用

using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Threading.Tasks;using System.Net.Sockets;using System.Net;namespace ServerApplication{    class Program    {        public static string IP;        public static int Port;        static List clientList = new List();        static Socket serverSocket;        static void Main(string[] args)        {            //绑定IP和端口            BindIPAndPort();            //            while (true)            {                Socket clientSocket = serverSocket.Accept();                Client client = new Client(clientSocket);                clientList.Add(client);                Console.WriteLine("一台主机进入连接");            }        }        /// 
        /// 广播数据        /// 
        public static void BroadcostMSG(string s)        {            List NotConnectedList = new List();            foreach (var item in clientList)            {                if(item.IsConnected)                {                    item.SendMSG(s);                }                else                {                    NotConnectedList.Add(item);                }            }            foreach (var item in NotConnectedList)            {                clientList.Remove(item);            }        }        /// 
        /// 绑定IP和端口        /// 
       public static void BindIPAndPort()        {            //创建一个serverSocket            serverSocket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);            //声明IP和端口            Console.WriteLine("输入IP地址：");            IP = Console.ReadLine();            string ipStr = IP;            Console.WriteLine("请输入端口：");            Port = int.Parse(Console.ReadLine());            int port = Port;            IPAddress serverIp = IPAddress.Parse(ipStr);            EndPoint serverPoint = new IPEndPoint(serverIp, port);            //socket和ip进行绑定            serverSocket.Bind(serverPoint);            //监听最大数为100            serverSocket.Listen(100);        }    }}

using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Threading.Tasks;using System.Net.Sockets;using System.Threading;namespace ServerApplication{    class Client    {        public Socket clientSocket;        //声明一个线程用于接收信息        Thread t;        //接收信息所用容器        byte[] data = new byte[1024];       //构造函数        public Client(Socket s)        {            clientSocket = s;            t = new Thread(ReceiveMSG);            t.Start();        }        /// 
        /// 接收数据        /// 
        void ReceiveMSG()        {            while(true)            {                if (clientSocket.Poll(10,SelectMode.SelectRead))                {                    break;                }                data = new byte[1024];                int length = clientSocket.Receive(data);                string message = Encoding.UTF8.GetString(data, 0, length);                Program.BroadcostMSG(message);                Console.WriteLine("收到消息：" + message);            }        }        /// 
        /// 发送数据        /// 
        ///        public void SendMSG(string message)        {            byte[] data = Encoding.UTF8.GetBytes(message);            clientSocket.Send(data);        }        //判断此Client对象是否在连接状态        public bool IsConnected        {            get { return clientSocket.Connected; }        }    }}

客户端：

a.UI界面

UI界面是使用UGUI实现的
登录用户可以自己取名进行登录（发言时用于显示），使用时需要输入服务端的IP地址和端口号

下面是聊天室的页面，在输入框内输入要发送的消息，点击Send，将信息发送出去

这是服务端的信息

b.关于客户端的脚本

（1）这是ClientManager，负责与服务端进行连接，通信

using System.Collections;using System.Collections.Generic;using UnityEngine;using System.Net.Sockets;using System.Net;using System.Text;using UnityEngine.UI;using System.Threading;public class ClientManager : MonoBehaviour{    //ip:192.168.1.7    public string ipAddressstr;    public int port;    public Text ipTextToShow;    //Socket    private Socket ClientServer;    //文本输入框    public InputField inputTxt;    public string inputMSGStr;    //接收    Thread t;    public Text receiveTextCom;    public string message;    // Use this for initialization    void Start()    {        ipTextToShow.text = ipAddressstr;       // ConnectedToServer();    }    // Update is called once per frame    void Update()    {        if (message != null && message != "")        {            receiveTextCom.text = receiveTextCom.text + "\n" + message;            message = "";        }    }    /// 
    /// 连接服务器    /// 
    public void ConnectedToServer()    {        ClientServer = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);        //声明IP地址和端口        IPAddress ServerAddress = IPAddress.Parse(ipAddressstr);        EndPoint ServerPoint = new IPEndPoint(ServerAddress, port);        ipAddressstr = IpInfo.ipStr;        port = IpInfo.portStr;        //开始连接        ClientServer.Connect(ServerPoint);        t = new Thread(ReceiveMSG);        t.Start();    }    /// 
    /// 接收消息    /// 
    /// "string"    void ReceiveMSG()    {        while (true)        {            if (ClientServer.Connected == false)            {                break;            }            byte[] data = new byte[1024];            int length = ClientServer.Receive(data);            message = Encoding.UTF8.GetString(data, 0, length);            //Debug.Log("有消息进来");        }    }    /// 
    /// 发送string类型数据    /// 
    ///     public void SendMSG()    {        Debug.Log("button Clicked");        //message = "我：" + inputTxt.text;        inputMSGStr = inputTxt.text;        byte[] data = Encoding.UTF8.GetBytes(IpInfo.name+":"+inputMSGStr);        ClientServer.Send(data);    }    private void OnDestroy()    {        ClientServer.Shutdown(SocketShutdown.Both);        ClientServer.Close();    }    private void OnApplicationQuit()    {        OnDestroy();    }}

（2）SceneManager，用于场景切换，这里只是利用GameObject进行SetActive（）来实现，并不是创建了单独的Scene进行管理。

using System.Collections;using System.Collections.Generic;using UnityEngine;public class SceneManager : MonoBehaviour {    public GameObject loginPanel;    public GameObject communicatingPanel;    // Use this for initialization    public void OnSwitch()    {        loginPanel.SetActive(false);        communicatingPanel.SetActive(true);    }}

（3）LogInPanel和IPInfo,一个挂载在登录界面上，一个是数据模型，用于存储数据。

using System.Collections;using System.Collections.Generic;using UnityEngine;using UnityEngine.UI;public class LogInPanel : MonoBehaviour {    public Text nameInputTxt;    public Text ipInputTxt;    public Text portInputTxt;    //private string name;    //private string ipStr;    //private string portStr;    public void OnLogInClick()    {        IpInfo.name = nameInputTxt.text;        IpInfo.ipStr = ipInputTxt.text;        IpInfo.portStr = int.Parse(portInputTxt.text);    }}

public static class IpInfo {    public static string name;    public static string ipStr;    public static int portStr;}

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