asp.net WEBSocket简单例子 推送数据

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1. public class SocketHandler
2. {
3. public const int BufferSize = 4096; //缓冲区
5. /// <summary>
6. /// webSocket 承载
7. /// </summary>
8. public WebSocket socket;
10. /// <summary>
11. /// webSocket 转换静态
12. /// </summary>
13. private static WebSocket webSocket;
15. private static HttpContext context;
17. private static byte[] faceJson; //
19. SocketHandler(WebSocket socket)
20. {
21. this.socket = socket;
22. }
24. /// <summary>
25. /// 使用websocket发送json
26. /// </summary>
27. /// <param name="body">json实体</param>
28. /// <returns></returns>
29. public static async Task Send(FaceCheckinEventArgs body)
30. {
31. MsgTemplate msgTemplate = new MsgTemplate();
32. msgTemplate.Name = body.DeviceName;
33. msgTemplate.PicUrl = body.PicUrl;
34. msgTemplate.UpTime = body.RecordTime.ToLocalTime().ToString();
35. msgTemplate.CarNo = body.CardID;
37. //序列化
38. var json = JsonConvert.SerializeObject(msgTemplate);
39. faceJson = Encoding.UTF8.GetBytes(json);
41. if (webSocket == null)
42. return;
44. //放入数组段
45. var outgoing = new ArraySegment<byte>(faceJson, 0, faceJson.Length);
46. //发送json
47. await webSocket.SendAsync(outgoing, WebSocketMessageType.Text, true, CancellationToken.None);
48. }
50. /// <summary>
51. /// 开启socket
52. /// </summary>
53. /// <param name="hc"></param>
54. /// <param name="n"></param>
55. /// <returns></returns>
56. static async Task Acceptor(HttpContext hc, Func<Task> n)
57. {
58. if (!hc.WebSockets.IsWebSocketRequest)
59. return;
61. var socket = await hc.WebSockets.AcceptWebSocketAsync();
62. webSocket = socket;
63. var h = new SocketHandler(socket);
64. context = hc;
65. var buffer = new byte[BufferSize];
66. var seg = new ArraySegment<byte>(buffer);
69. while(webSocket.State== WebSocketState.Open) //保持开启状态
70. {
71. Thread.Sleep(1000);
72. }
73. }
75. /// <summary>
76. /// 为这个SokKethHANDER使用分支请求管道
77. /// </summary>
78. /// <param name="app"></param>
79. public static void Map(IApplicationBuilder app)
80. {
81. app.UseWebSockets();
82. app.Use(SocketHandler.Acceptor);
83. }
84. }

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来源：https://blog.csdn.net/qq_25702579/article/details/84822704
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