66 lines
2.7 KiB
C#
66 lines
2.7 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Net;
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using System.Net.Http;
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using System.Net.WebSockets;
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using System.Text;
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using System.Threading;
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using System.Threading.Tasks;
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using System.Web;
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using System.Web.Http;
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using System.Web.WebSockets;
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//using WebSocket4Net;
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namespace TestDemo.Controllers
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{
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public class MsgApiController : ApiController
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{
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private static List<WebSocket> _sockets = new List<WebSocket>();
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[Route]
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[HttpGet]
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public HttpResponseMessage Connect()
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{
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//在服务器端接受Web Socket请求，传入的函数作为Web Socket的处理函数，待Web Socket建立后该函数会被调用，在该函数中可以对Web Socket进行消息收发
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HttpContext.Current.AcceptWebSocketRequest(ProcessRequest);
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//构造同意切换至Web Socket的Response.
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return Request.CreateResponse(HttpStatusCode.SwitchingProtocols);
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}
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public async Task ProcessRequest(AspNetWebSocketContext context)
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{
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var socket = context.WebSocket;//传入的context中有当前的web socket对象
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_sockets.Add(socket);//此处将web socket对象加入一个静态列表中
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//进入一个无限循环，当web socket close是循环结束
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while (true)
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{
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var buffer = new ArraySegment<byte>(new byte[1024]);
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var receivedResult = await socket.ReceiveAsync(buffer, CancellationToken.None);//对web socket进行异步接收数据
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if (receivedResult.MessageType == System.Net.WebSockets.WebSocketMessageType.Close)
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{
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//如果client发起close请求，对client进行ack
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await socket.CloseAsync(System.Net.WebSockets.WebSocketCloseStatus.Empty, string.Empty, CancellationToken.None);
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_sockets.Remove(socket);
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break;
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}
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if (socket.State == System.Net.WebSockets.WebSocketState.Open)
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{
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string recvMsg = Encoding.UTF8.GetString(buffer.Array, 0, receivedResult.Count);
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var recvBytes = Encoding.UTF8.GetBytes(recvMsg);
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var sendBuffer = new ArraySegment<byte>(buffer.Array);
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foreach (var innerSocket in _sockets)//当接收到文本消息时，对当前服务器上所有web socket连接进行广播
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{
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if (innerSocket != socket)
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{
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await innerSocket.SendAsync(sendBuffer, WebSocketMessageType.Text, true, CancellationToken.None);
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}
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}
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}
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}
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}
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}
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} |