这篇博客介绍了如何在Unity中建立WebSocket连接，包括创建UI界面，使用BestHTTP插件，以及实现连接、发送、关闭WebSocket的方法。WebSocket服务器通过Tomcat搭建，当连接建立、接收到消息、错误发生或关闭时，会有相应的事件处理。此外，还提到了WebGL版本的测试和服务器端的反馈显示。
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
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;
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using System.Collections.Generic;
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using UnityEngine;
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using BestHTTP;
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using BestHTTP.WebSocket;
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using System;
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using BestHTTP.Examples;
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using UnityEngine.UI;
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using System.Text;
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public
class
WSMgr :
MonoBehaviour {
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//public string url = "ws://localhost:8080/web1/websocket";
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public
string url =
"ws://localhost:8080/web1/ws";
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public InputField msg;
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public Text console;
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private WebSocket webSocket;
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private void Start()
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{
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init();
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}
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private void init()
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{
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webSocket =
new WebSocket(
new Uri(url));
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webSocket.OnOpen += OnOpen;
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webSocket.OnMessage += OnMessageReceived;
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webSocket.OnError += OnError;
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webSocket.OnClosed += OnClosed;
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}
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private void antiInit()
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{
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webSocket.OnOpen =
null;
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webSocket.OnMessage =
null;
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webSocket.OnError =
null;
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webSocket.OnClosed =
null;
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webSocket =
null;
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}
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private void setConsoleMsg(string msg)
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{
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console.text =
"Message: " + msg;
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}
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public void Connect()
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{
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webSocket.Open();
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}
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private byte[] getBytes(string message)
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{
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byte[] buffer = Encoding.Default.GetBytes(message);
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return buffer;
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}
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public void Send()
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{
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webSocket.Send(msg.text);
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}
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public void Send(string str)
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{
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webSocket.Send(str);
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}
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public void Close()
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{
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webSocket.Close();
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}
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#region WebSocket Event Handlers
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/// <summary>
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/// Called when the web socket is open, and we are ready to send and receive data
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/// </summary>
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void OnOpen(WebSocket ws)
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{
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Debug.Log(
"connected");
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setConsoleMsg(
"Connected");
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}
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/// <summary>
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/// Called when we received a text message from the server
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/// </summary>
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void OnMessageReceived(WebSocket ws, string message)
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{
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Debug.Log(message);
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setConsoleMsg(message);
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}
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/// <summary>
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/// Called when the web socket closed
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/// </summary>
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void OnClosed(WebSocket ws, UInt16 code, string message)
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{
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Debug.Log(message);
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setConsoleMsg(message);
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antiInit();
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init();
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}
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private void OnDestroy()
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{
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if(webSocket!=
null && webSocket.IsOpen)
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{
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webSocket.Close();
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antiInit();
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}
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}
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/// <summary>
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/// Called when an error occured on client side
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/// </summary>
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void OnError(WebSocket ws, Exception ex)
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{
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string errorMsg =
string.Empty;
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#if !UNITY_WEBGL || UNITY_EDITOR
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if (ws.InternalRequest.Response !=
null)
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errorMsg =
string.Format(
"Status Code from Server: {0} and Message: {1}", ws.InternalRequest.Response.StatusCode, ws.InternalRequest.Response.Message);
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#endif
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Debug.Log(errorMsg);
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setConsoleMsg(errorMsg);
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antiInit();
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init();
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}
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#endregion
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}
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
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