客户端用Unity开发，主要就是搭建一下聊天室的UI界面：输入框，聊天内容显示框，发送按钮

灰色背景的就是Message，也就是聊天内容的显示框，是一个Text类型，这里创建UI方面就不多讲了

在Canvas下挂一个ChatManager脚本

using System;

using UnityEngine;

using System.Net.Sockets;

using System.Net;

using UnityEngine.UI;

using System.Text;

public class ChatManager : MonoBehaviour {

private Socket clientSocket;

private Button btn;

private InputField inputField;

private Text showMessage;

private byte[] data = new byte[1024];

private string msg = "";

void Start()

{

//创建一个socket，绑定和服务器一样的ip和端口号，然后执行Connect就可以连接上服务器了(服务器已经运行)

clientSocket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);

clientSocket.Connect(new IPEndPoint(IPAddress.Parse("127.0.0.1"), 6688));

btn = transform.Find("Button").GetComponent();

btn.onClick.AddListener(OnSendClick);

inputField = transform.Find("InputField").GetComponent();

showMessage = transform.Find("BG/Message").GetComponent();

ClientStart();

}

void Update()

{

if(msg!=null && msg != "")

{

showMessage.text += msg+"\n";回调函数不能调用Unity的组件、UI；所以只能在Update里用，而不能直接在ReceiveCallBack(回调函数不属于Unity的主线程)

msg = "";

}

}

private void OnSendClick()  //绑定到发送按钮的方法

{

if (inputField.text != "")

{

byte[] databytes = Encoding.UTF8.GetBytes(inputField.text);

clientSocket.Send(databytes);

inputField.text = "";

}

}

private void ClientStart()  //开始接收从服务器发来的消息

{

clientSocket.BeginReceive(data, 0, 1024,SocketFlags.None, ReceiveCallBack, null);

}

private void ReceiveCallBack(IAsyncResult ar)

{

try

{

if (clientSocket.Connected == false)

{

clientSocket.Close();

return;

}

int len = clientSocket.EndReceive(ar);

string message = Encoding.UTF8.GetString(data, 0, len);

msg = message;

ClientStart();  //重复接收从服务器发来的信息

}

catch(Exception e)

{

Debug.Log("ReceiveCallBack:" + e);

}

}

void OnDestroy()

{

clientSocket.Close();

}

}