C#编程 socket编程之unity聊天室

上面我们创建了tcp的客户端和服务端，但是只能进行消息的一次收发。这次我们做一个unity的简易聊天室，使用了线程，可以使用多个客户端连接服务器，并且一个客户端给服务器发消息后，服务器会将消息群发给所有客户端。

服务器端分为Program和Client，在Program中进行Ip和端口的绑定并与客户端建立连接，消息的接收和发送放在Client中、

服务端之Program：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Net.Sockets;
using System.Net.WebSockets;
using System.Text;
using System.Threading.Tasks;

namespace _022_聊天室_socket_tcp服务器端 {
    class Program {
        static  List<Client> clientList = new List<Client>();

        // 广播消息
        public static void BroadcastMessage(string message)
        {
            var notConnectedList = new List<Client>();
            foreach (var client in clientList)
            {
                if (client.Connected)
                    client.SendMessage(message);
                else
                {
                    notConnectedList.Add(client);
                }
            }
            foreach (var temp in notConnectedList)
            {
                clientList.Remove(temp);
            }
        }
        static void Main(string[] args) {
            Socket tcpServer = new Socket(AddressFamily.InterNetwork,SocketType.Stream, ProtocolType.Tcp);
            tcpServer.Bind(new IPEndPoint(IPAddress.Parse("192.168.1.101"),7788));

            tcpServer.Listen(100);
            Console.WriteLine("server running...");

            while (true)
            {
                Socket clientSocket = tcpServer.Accept();
                Console.WriteLine("a client is connected !");
                Client client = new Client(clientSocket);//把与每个客户端通信的逻辑(收发消息)放到client类里面进行处理
                clientList.Add(client);
            }
            
        }
    }
}

服务端之Client：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Net.Sockets;
using System.Text;
using System.Threading;
using System.Threading.Tasks;

namespace _022_聊天室_socket_tcp服务器端 {
    // 用来跟客户端做通信 
    class Client
    {
        private Socket clientSocket;
        private Thread t;
        private byte[] data = new byte[1024];//这个是一个数据容器

        public Client(Socket s)
        {
            clientSocket = s;
            //启动一个线程 处理客户端的数据接收
            t = new Thread(ReceiveMessage);
            t.Start();
        }

        // 接收数据
        private void ReceiveMessage()
        {
            //一直接收客户端的数据
            while (true)
            {
                //在接收数据之前  判断一下socket连接是否断开
                if (clientSocket.Poll(10, SelectMode.SelectRead))
                {
                    clientSocket.Close();
                    break;//跳出循环 终止线程的执行
                }
                
                int length = clientSocket.Receive(data);
                string message = Encoding.UTF8.GetString(data, 0, length);
                //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("收到了消息:"+message);
            }
        }

        // 发送消息
        public void SendMessage(string message)
        {
            byte[] data = Encoding.UTF8.GetBytes(message);
            clientSocket.Send(data);
        }

        // 判断是否连接
        public bool Connected
        {
            get { return clientSocket.Connected; }
        }
    }
}

客户端：因为是基于unity的聊天室，所以首先创建简单的UI界面

代码：

using UnityEngine;
using System.Collections;
using System.Net;
using System.Net.Sockets;
using System.Text;
using System.Threading;

public class ChatManager : MonoBehaviour
{
    public string ipaddress = "192.168.1.101";
    public int port = 7788;
    public UIInput textInput;
    public UILabel chatLabel;

    private Socket clientSocket;
    private Thread t;
    private byte[] data = new byte[1024];//数据容器
    private string message = "";//消息容器

	void Start () {
	    ConnectToServer();
	}
	
	void Update () {
	    if (message != null && message != "")
	    {
	        chatLabel.text += "
" + message;
	        message = "";//清空消息
	    }
	}

    void ConnectToServer()
    {
        clientSocket = new Socket(AddressFamily.InterNetwork,SocketType.Stream, ProtocolType.Tcp);
        //跟服务器端建立连接
        clientSocket.Connect( new IPEndPoint(IPAddress.Parse(ipaddress),port) );

        //创建一个新的线程 用来接收消息
        t = new Thread(ReceiveMessage);
        t.Start();
    }

    // 这个线程方法 用来循环接收消息
    void ReceiveMessage()
    {
        while (true)
        {
            if (clientSocket.Connected == false)
                break;

            int length = clientSocket.Receive(data);
            message = Encoding.UTF8.GetString(data, 0, length);
            //chatLabel.text += "
" + message;
        }
    }

    // 发送消息
    void SendMessage(string message)
    {
        byte[] data = Encoding.UTF8.GetBytes(message);
        clientSocket.Send(data);
    }

    // 发送按钮点击
    public void OnSendButtonClick()
    {
        string value = textInput.value;
        SendMessage(value);
        textInput.value = "";
    }

    void OnDestroy()
    {
        clientSocket.Shutdown(SocketShutdown.Both);
        
        clientSocket.Close();//关闭连接
    }
}