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实现websocket 主动消息推送,用laravel+Swoole

 4 years ago
source link: http://www.cnblogs.com/a609251438/p/11917708.html
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近来有个需求:想实现一个可以主动触发消息推送的功能,这个可以实现向模板消息那个,给予所有成员发送自定义消息,而不需要通过客户端发送消息,服务端上message中监听传送的消息进行做相对于的业务逻辑。

主动消息推送实现

平常我们采用 swoole 来写 WebSocket 服务可能最多的用到的是open,message,close这三个监听状态,但是万万没有看下下面的onRequest回调的使用,没错,解决这次主动消息推送的就是需要用onRequest回调。

官方文档:正因为swoole_websocket_server继承自swoole_http_server,所以在 websocket 中有onRequest回调。

详细实现:

 1 # 这里是一个laravel中Commands
 2 # 运行php artisan swoole start 即可运行
 3 <?php
 4 
 5 namespace App\Console\Commands;
 6 
 7 use Illuminate\Console\Command;
 8 use swoole_websocket_server;
 9 
10 class Swoole extends Command
11 {
12     public $ws;
13     /**
14      * The name and signature of the console command.
15      *
16      * @var string
17      */
18     protected $signature = 'swoole {action}';
19 
20     /**
21      * The console command description.
22      *
23      * @var string
24      */
25     protected $description = 'Active Push Message';
26 
27     /**
28      * Create a new command instance.
29      *
30      * @return void
31      */
32     public function __construct()
33     {
34         parent::__construct();
35     }
36 
37     /**
38      * Execute the console command.
39      *
40      * @return mixed
41      */
42     public function handle()
43     {
44         $arg = $this->argument('action');
45         switch ($arg) {
46             case 'start':
47                 $this->info('swoole server started');
48                 $this->start();
49                 break;
50             case 'stop':
51                 $this->info('swoole server stoped');
52                 break;
53             case 'restart':
54                 $this->info('swoole server restarted');
55                 break;
56         }
57     }
58 
59     /**
60      * 启动Swoole
61      */
62     private function start()
63     {
64         $this->ws = new swoole_websocket_server("0.0.0.0", 9502);
65         //监听WebSocket连接打开事件
66         $this->ws->on('open', function ($ws, $request) {
67         });
68         //监听WebSocket消息事件
69         $this->ws->on('message', function ($ws, $frame) {
70             $this->info("client is SendMessage\n");
71         });
72         //监听WebSocket主动推送消息事件
73         $this->ws->on('request', function ($request, $response) {
74             $scene = $request->post['scene'];       // 获取值
75             $this->info("client is PushMessage\n".$scene);
76         });
77         //监听WebSocket连接关闭事件
78         $this->ws->on('close', function ($ws, $fd) {
79             $this->info("client is close\n");
80         });
81         $this->ws->start();
82     }
83 }

前面说的是 swoole 中onRequest的实现,下面实现下在控制器中主动触发onRequest回调。实现方法就是我们熟悉的curl请求。

 1 # 调用activepush方法以后,会在cmd中打印出 
 2 # client is PushMessage 主动推送消息 字眼
 3     /**
 4      * CURL请求
 5      * @param $data
 6      */
 7     public function curl($data)
 8     {
 9         $curl = curl_init();
10         curl_setopt($curl, CURLOPT_URL, "http://127.0.0.1:9502");
11         curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
12         curl_setopt($curl, CURLOPT_HEADER, 1);
13         curl_setopt($curl, CURLOPT_POST, 1);
14         curl_setopt($curl, CURLOPT_POSTFIELDS, $data);
15         curl_exec($curl);
16         curl_close($curl);
17     }
18     
19     /**
20      * 主动触发
21      */
22     public function activepush()
23     {
24         $param['scene'] = '主动推送消息';
25         $this->curl($param);            // 主动推送消息

用途

onRequest 回调特别适用于需要在控制器中调用的推送消息,比如模板消息之类,在控制器中调用。


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