Unity使用webSocket与服务器通信（一）搭建一个简单地服务器和客户端

你想在unity WebGL里面使用TCP通信吗，那么你可以用一用webSocket。当然，桌面端也可以使用webSocket，这样Unity多平台发布的时候，业务层的通信代码可以使用一套，而不是桌面用socket，网页用http…

一、什么是webSocket？

顾名思义，它就是web版的socket？那什么是socket呢？…

二、Unity中webSocket相关的包有哪些？

endel/NativeWebSocket
项目链接

三、Unity客户端的实现

• 联网演示
  

• 绑定脚本
  

• 代码清单
  代码来自NativeWebSocket官网demo，略作修改

using System;
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;
using NativeWebSocket;

public class Connection : MonoBehaviour
{
    WebSocket websocket;

    public Text textLog;

    // Start is called before the first frame update
    async void Start()
    {
        websocket = new WebSocket("ws://192.168.0.146:8081");

        websocket.OnOpen += () =>
        {
            Debug.Log("Connection open!");
            textLog.text = $"Connection open! {Time.realtimeSinceStartup} \n {textLog.text}";
        };

        websocket.OnError += (e) =>
        {
            Debug.Log("Error! " + e);
            textLog.text = $"Error:{e} {Time.realtimeSinceStartup} \n {textLog.text}";
        };

        websocket.OnClose += (e) =>
        {
            Debug.Log("Connection closed!");
            textLog.text = $"Connection closed! {Time.realtimeSinceStartup} \n {textLog.text}";
        };

        websocket.OnMessage += (bytes) =>
        {
            Debug.Log("OnMessage!");
            textLog.text = $"OnMessage! {Time.realtimeSinceStartup} \n {textLog.text}";
            Debug.Log(bytes);

            // getting the message as a string
            var message = System.Text.Encoding.UTF8.GetString(bytes);
            textLog.text = $"消息内容：{message} {Time.realtimeSinceStartup} \n {textLog.text}";
            //Debug.Log("OnMessage! " + message);
        };

        // Keep sending messages at every 0.3s
        InvokeRepeating("SendWebSocketMessage", 0.0f, 0.3f);

        // waiting for messages
        await websocket.Connect();
    }

    void Update()
    {
#if !UNITY_WEBGL || UNITY_EDITOR
        websocket.DispatchMessageQueue();
#endif
    }

    async void SendWebSocketMessage()
    {
        if (websocket.State == WebSocketState.Open)
        {
            // Sending bytes
            await websocket.Send(new byte[] { 10, 20, 30 });

            // Sending plain text
            await websocket.SendText("plain text message");
        }
    }

    private async void OnApplicationQuit()
    {
        await websocket.Close();
    }

}

四、服务端的实现（C# WinForm）

1、服务器端用到的包

github链接

2、主要代码

代码来自官网Demo，略有修改

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Diagnostics;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using Fleck;

namespace WinFormsApp1
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            var server = new WebSocketServer("ws://192.168.0.146:8081");  //ws://localhost:8081    ws://127.0.0.0:8181
            server.Start(socket =>
            {
                socket.OnOpen = () =>
                {
                    Debug.WriteLine($"有新用户连入：{socket.ConnectionInfo.ClientIpAddress}");
                };
                socket.OnClose = () =>
                {
                    Debug.WriteLine($"用户断开连接：{socket.ConnectionInfo.ClientIpAddress}");
                };
                socket.OnMessage = message =>
                {
                    socket.Send($"服务器收到消息 : {DateTime.Now.ToString()}");
                    Debug.WriteLine($"收到一条消息，来自：{socket.ConnectionInfo.ClientIpAddress}");
                };
            });

            Debug.WriteLine("服务器已经启动！");
        }
    }
}

五、客户端的WebGL和Win 桌面测试

桌面和webGL都没问题、这样，可以一套代码打天下。
以前用socket在桌面(包括一体头盔)，在web端只能用http，现在可以统一了。