Socket.io for Unity3d

这个是 Unity3D 和 Socket.IO 通信成功的截图。关于服务器端 我们已经昨天讲过了。今天主要讲一下客户端。并且 用 unity制作一个 聊天软件。 测试了 PC Android 都是OK的

我们先看下 客户端的 Socket 的事件顺序

Socket.IO内置了一些默认事件，我们在设计事件的时候应该避开默认的事件名称，并灵活运用这些默认事件。

服务器端事件：

io.sockets.on('connection', function(socket) {})：socket连接成功之后触发，用于初始化
socket.on('message', function(message, callback) {})：客户端通过socket.send来传送消息时触发此事件，message为传输的消息，callback是收到消息后要执行的回调
socket.on('anything', function(data) {})：收到任何事件时触发
socket.on('disconnect', function() {})：socket失去连接时触发（包括关闭浏览器，主动断开，掉线等任何断开连接的情况）

客户端事件：

connect：连接成功
connecting：正在连接
disconnect：断开连接
connect_failed：连接失败
error：错误发生，并且无法被其他事件类型所处理
message：同服务器端message事件
anything：同服务器端anything事件
reconnect_failed：重连失败
reconnect：成功重连
reconnecting：正在重连

在这里要提下客户端socket发起连接时的顺序。当第一次连接时，事件触发顺序为：connecting->connect；当失去连接时，事件触发顺序为：disconnect->reconnecting（可能进行多次）->connecting->reconnect->connect。

好了开始正文吧；

客户端我们用到一个插件：https://www.assetstore.unity3d.com/cn/#!/content/21721

这个插件虽然时间有点久了，但是还是挺好用的

 unity3D新建一个场景 写个脚本 SocketController,随便挂在那里都行。 客户端就这个一个脚本

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using SocketIO;
using System;
 
using LitJson;

public class SocketController : MonoBehaviour {
 
    
    SocketIOComponent socketIO;
    private bool    login;
    private string chatMessage = "";
    private string chatContent = "";
    private string nickName = "";
    private Guid guid = Guid.NewGuid();


    // Use this for initialization
    void Start ()
    {

        GameObject go = GameObject.Find("SocketIO");
        if (go == null)
        {
            go       = new GameObject("SocketIO");
            socketIO = go.AddComponent();
        }
        else
        {
            socketIO = go.GetComponent();
            if (socketIO == null)
            {
                socketIO = go.AddComponent();
            }
        }

        socketIO.url = "ws://192.168.0.170:4567/socket.io/?EIO=3&transport=websocket";//本机测试地址 需要改成你配置的服务器

        socketIO.Connect();


        OnAddEvemt();
    }



    private void OnGUI()
    {

        if (!login)
        {
            Rect rect = new Rect(Screen.width / 3, Screen.height / 3, Screen.width / 3, Screen.height / 2);
            GUI.Box(rect, "" );


            GUI.Label(new Rect(rect.x + Screen.width / 60, rect.y + Screen.height / 9, rect.width - Screen.width / 15, Screen.height / 15),"请输入昵称：");
  
            nickName =  GUI.TextField(new Rect(rect.x + Screen.width / 10, rect.y+ Screen.height / 10, rect.width- Screen.width / 5, Screen.height / 15), nickName);

            if( GUI.Button(new Rect(rect.x + Screen.width / 30, rect.y + Screen.height/4, rect.width - Screen.width / 15, Screen.height / 15),"登录" ))
            {
                
                if (nickName.Length > 0)
                {
                    Dictionary data = new Dictionary();
                    data["guid"]                    = guid.ToString();
                    data["nickName"]                = nickName;

                    socketIO.Emit(SocketIOProtocol.ProtocolLogin, new JSONObject(data));
                }
            }  

           return;
        }

        GUI.Label(new Rect(0, 0, Screen.width, Screen.height - 200), chatContent);

        chatMessage = GUI.TextField(new Rect(0, Screen.height - 200, Screen.width - 200, 200), chatMessage);
        if (GUI.Button(new Rect(Screen.width - 200, Screen.height - 200, 200, 200), "Send"))
        {


            Dictionary data = new Dictionary();
            data["chatMessage"] = chatMessage;
            socketIO.Emit(SocketIOProtocol.ProtocolChat, new JSONObject(data));

            chatMessage = string.Empty;
        }
    }




    void OnAddEvemt()
    {
        socketIO.On(SocketIOProtocol.ProtocolLogin, (date) =>
        {
            JsonData jsonData = JsonMapper.ToObject(date.data.ToString());
            string message = string.Format("{0} : {1}", jsonData["nickName"], jsonData["chatMessage"]);
            chatContent += message + "\r\n";
            login = true;
        });

        socketIO.On(SocketIOProtocol.ProtocolChat, (date) =>
        {
            JsonData jsonData = JsonMapper.ToObject(date.data.ToString());
            string message = string.Format("{0} : {1}", jsonData["nickName"], jsonData["chatMessage"]);
            chatContent += message + "\r\n";
        });

        socketIO.On(SocketIOProtocol.ProtocolInfo, (date) =>
        {
           Debug.Log(date.data);
       });
    }
    void OnRemoveEvent()
    {
        socketIO.Off(SocketIOProtocol.ProtocolLogin);
        socketIO.Off(SocketIOProtocol.ProtocolChat);
        socketIO.Off(SocketIOProtocol.ProtocolInfo);
    }


 
}

服务器端的脚本

/*!
 * express
 * Copyright(c) 2009-2013 TJ Holowaychuk
 * Copyright(c) 2013 Roman Shtylman
 * Copyright(c) 2014-2015 Douglas Christopher Wilson
 * MIT Licensed
 */

'use strict';

module.exports = require('./lib/express');

var io = require('socket.io')({
    transports: ['websocket'],
});
io.attach(4567);
console.log('Server Start....');



var socketArray = {};//Socket ����

io.on('connection', function (socket) {
    console.log('Client Contect. SocketID:'+socket.id);
    //socket.emit('SocketProtocol.Info', { hi: 'Hello,world' });
    socket.emit('SocketProtocol.Info', "ConnectServer Scuess! :"+socket.id);
    socket.on('SocketProtocol.Login', function (data) {
        console.log(data);

        //var content = JSON.parse(data);
        socket.nickName =  data.nickName;
        socket.guid      = data.guid;
        //
        if( !socketArray.hasOwnProperty(socket.guid) )
        {
            socketArray[socket.guid] = data;
        }
        //
        //console.log(socketArray);
        var chatContent={};
        chatContent.nickName        =  socket.nickName;
        chatContent.chatMessage     = "Login Scuess";

        socket.emit('SocketProtocol.Login',chatContent);


    });

    socket.on('SocketProtocol.Chat', function (data) {
        //console.log("SocketProtocol.Chat:"+data);

        var chatContent ={};
        chatContent.nickName      = socket.nickName;
        chatContent.chatMessage  = data.chatMessage;

        console.log("chatContent.toJSON():"+JSON.stringify(chatContent));
        io.sockets.emit('SocketProtocol.Chat',chatContent);//All SocketUsers
        //socket.broadcast.emit(data);//All SocketUsers But Self
    });

    socket.on('disconnect', function () {
        console.log("disconnect");
        if(  socketArray.hasOwnProperty(socket.guid) )
       {
           delete socketArray[socket.guid];
           console.log("disconnect Delete:"+socket.guid);
       }
        console.log("Inline Count:"+countProperties(socketArray));
    });

});

function countProperties (obj) {
    var count = 0;
    for (var property in obj) {
        if (Object.prototype.hasOwnProperty.call(obj, property)) {
            count++;
        }
    }
    return count;
}

this.size = function () {
    var count = 0;
    for (var prop in items) {
        if (items.hasOwnProperty(prop)) {
            ++count;
        }
    }
    return count;
};  ;

然后就好了

工程下载地址 https://download.csdn.net/download/nicepainkiller/10498219

你就可以玩了。

下一步 我准备加上 authorization 验证的环节避免恶意访问