C# 实现WebSocket通信

　　本实例可通过web网页端进行测试，下面直接上代码。

　　首先要在NuGet导入“Fleck”包，.net framework4以上版本都可以选择。

using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading;

namespace Fleck.Samples.ConsoleApp
{
    class Server
    {
        static void Main()
        {
            FleckLog.Level = LogLevel.Debug;
            var allSockets = new List<IWebSocketConnection>();
            var server = new WebSocketServer("ws://10.10.10.99:50000");
            server.Start(socket =>
                {
                    socket.OnOpen = () =>
                        {
                            Console.WriteLine("Open!");
                            allSockets.Add(socket);
                        };
                    socket.OnClose = () =>
                        {
                            Console.WriteLine("Close!");
                            allSockets.Remove(socket);
                        };
                    socket.OnMessage = message =>
                        {
                            Console.WriteLine(message);
                            allSockets.ToList().ForEach(s => s.Send("Echo: " + message));
                        };
                });


            var input = Console.ReadLine();
            while (input != "exit")
            {
                foreach (var socket in allSockets.ToList())
                {
                    socket.Send(input);
                }
                input = Console.ReadLine();
            }

        }
    }
}

接下来就是测试阶段，首先运行窗体程序。

测试方法1：打开浏览器，F12进入调试模式，在Console中输入测试代码。（我使用的是谷歌浏览器）

ws = new WebSocket("ws://10.10.10.99:50001");
ws.onopen = function() { 
    ws.send('websocekt测试'); 
};
ws.onmessage = function(e) {
    alert("收到服务端的消息：" + e.data);
};

输入完毕后按回车执行，这时就可以在命令行中看到传过来的数据了。

测试方法2：写html脚本进行通信。

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<html>
<head>
    <title>websocket client</title>
    <script type="text/javascript">
        var start = function () {
            var inc = document.getElementById('incomming');
            var wsImpl = window.WebSocket || window.MozWebSocket;
            var form = document.getElementById('sendForm');
            var input = document.getElementById('sendText');

            inc.innerHTML += "connecting to server ..<br/>";

            // create a new websocket and connect
            window.ws = new wsImpl('ws://10.10.10.99:50000/');

            // when data is comming from the server, this metod is called
            ws.onmessage = function (evt) {
                inc.innerHTML += evt.data + '<br/>';
            };

            // when the connection is established, this method is called
            ws.onopen = function () {
                inc.innerHTML += '.. connection open<br/>';
            };

            // when the connection is closed, this method is called
            ws.onclose = function () {
                inc.innerHTML += '.. connection closed<br/>';
            }

            form.addEventListener('submit', function (e) {
                e.preventDefault();
                var val = input.value;
                ws.send(val);
                input.value = "";
            });

        }
        window.onload = start;
    </script>
</head>
<body>
    <form id="sendForm">
        <input id="sendText" placeholder="Text to send" />
    </form>
    <pre id="incomming"></pre>
</body>
</html>

到这里就结束了，哪里说得不明确希望大家加以补充。

参考：

　　https://www.cnblogs.com/cjm123/p/9674506.html