首先我们需要一个websocket服务器，之前的博文中有做
Tomcat架设简单Websocket服务器
用的时候打开就行了，先不管它

Unity中新建场景
建UI（UGUI）
有一个连接按钮Button
一个信息输入框InputField
一个发送按钮Button
一个断开按钮Button
一个消息显示框Text

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场景中建一个GameObject，在上面加个脚本，就叫WSMgr好了
用到了BestHTTP这个插件

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using System.Collections;using System.Collections.Generic;using UnityEngine;using BestHTTP;using BestHTTP.WebSocket;using System;using BestHTTP.Examples;using UnityEngine.UI;using System.Text;public class WSMgr : MonoBehaviour { //public string url = "ws://localhost:8080/web1/websocket"; public string url = "ws://localhost:8080/web1/ws"; public InputField msg; public Text console; private WebSocket webSocket; private void Start() { init(); } private void init() { webSocket = new WebSocket(new Uri(url)); webSocket.OnOpen += OnOpen; webSocket.OnMessage += OnMessageReceived; webSocket.OnError += OnError; webSocket.OnClosed += OnClosed; } private void antiInit() { webSocket.OnOpen = null; webSocket.OnMessage = null; webSocket.OnError = null; webSocket.OnClosed = null; webSocket = null; } private void setConsoleMsg(string msg) { console.text = "Message: " + msg; } public void Connect() { webSocket.Open(); } private byte[] getBytes(string message) { byte[] buffer = Encoding.Default.GetBytes(message); return buffer; } public void Send() { webSocket.Send(msg.text); } public void Send(string str) { webSocket.Send(str); } public void Close() { webSocket.Close(); } #region WebSocket Event Handlers /// <summary> /// Called when the web socket is open, and we are ready to send and receive data /// </summary> void OnOpen(WebSocket ws) { Debug.Log("connected"); setConsoleMsg("Connected"); } /// <summary> /// Called when we received a text message from the server /// </summary> void OnMessageReceived(WebSocket ws, string message) { Debug.Log(message); setConsoleMsg(message); } /// <summary> /// Called when the web socket closed /// </summary> void OnClosed(WebSocket ws, UInt16 code, string message) { Debug.Log(message); setConsoleMsg(message); antiInit(); init(); } private void OnDestroy() { if(webSocket!=null && webSocket.IsOpen) { webSocket.Close(); antiInit(); } } /// <summary> /// Called when an error occured on client side /// </summary> void OnError(WebSocket ws, Exception ex) { string errorMsg = string.Empty;#if !UNITY_WEBGL || UNITY_EDITOR if (ws.InternalRequest.Response != null) errorMsg = string.Format("Status Code from Server: {0} and Message: {1}", ws.InternalRequest.Response.StatusCode, ws.InternalRequest.Response.Message);#endif Debug.Log(errorMsg); setConsoleMsg(errorMsg); antiInit(); init(); } #endregion}

Connect Send Close 三个方法对应的就是三个按钮的功能
OnOpen OnMessage OnError OnClose这四个一看就是Websocket的四个事件对应的方法

首先在Start方法中init()
点击Connect，连接

在输入框中输入，点击Send就发送

点击Close断开连接

底部的Text中会显示消息

同样，Tomcat服务端也有显示

发布WebGL测试可用