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swoole websocket服务推送

2015-06-29 17:19 260 查看

用过workerman, 两个字"好用",对于swoole最近有时间也研究研究

swoole的websocket 很好实现

如官网 https://wiki.swoole.com/wiki/page/479.html

ws_server.php

//创建websocket服务器对象，监听0.0.0.0:9502端口
$ws = new swoole_websocket_server("0.0.0.0", 9502);

//监听WebSocket连接打开事件
$ws->on('open', function ($ws, $request) {
var_dump($request->fd, $request->get, $request->server);
$ws->push($request->fd, "hello, welcome\n");
});

//监听WebSocket消息事件
$ws->on('message', function ($ws, $frame) {
echo "Message: {$frame->data}\n";
$ws->push($frame->fd, "server: {$frame->data}");
});

//监听WebSocket连接关闭事件
$ws->on('close', function ($ws, $fd) {
echo "client-{$fd} is closed\n";
});

$ws->start();

运行程序

php ws_server.php

客户端 a.html

var wsServer = 'ws://127.0.0.1:9502';
var websocket = new WebSocket(wsServer);
websocket.onopen = function (evt) {
console.log("Connected to WebSocket server.");
};

websocket.onclose = function (evt) {
console.log("Disconnected");
};

websocket.onmessage = function (evt) {
console.log('Retrieved data from server: ' + evt.data);
};

websocket.onerror = function (evt, e) {
console.log('Error occured: ' + evt.data);
};

ok了!

现在我们看到的是客户端发送信息,服务器应答并返回数据

那我们现在要的是服务器主动发送信息

有三个办法:

1.使用swoole的定时器,定时发送,可通过syc从数据库获取数据逻辑判断后push发送给客户端

2.使用swoole中自带框架

这个方法和方法3原理是一样的,就是需要后台主动推送的时候,模拟一个客户端发送消息,可以是CLI的脚本,也可以是php的CURL请求

https://github.com/matyhtf/framework/blob/master/libs/Swoole/Client/WebSocket.php

github下载地址: https://github.com/matyhtf/framework

<?php
define('DEBUG', 'on');
define("WEBPATH", str_replace("\\", "/", __DIR__));
require __DIR__ . '/framework-master/libs/lib_config.php';
$client = new Swoole\Client\WebSocket('127.0.0.1', 9502);
if (!$client->connect()) {
echo "connect to server failed.\n";
exit;
}

$client->send("我是PHP-client端,发来的消息");  # 客户端可以看到

3.设置onRequest回调

用过workerman的都知道,workerman中就有这个获取http的get,post 数据并sendto客户端,在这里swoole也可以实现

https://wiki.swoole.com/wiki/page/397.html

swoole_websocket_server 继承自 swoole_http_server

设置了onRequest回调，websocket服务器也可以同时作为http服务器

未设置onRequest回调，websocket服务器收到http请求后会返回

http 400

错误页面

如果想通过接收http触发所有websocket的推送，需要注意作用域的问题，面向过程请使用“global”对swoole_websocket_server进行引用，面向对象可以把swoole_websocket_server设置成一个成员属性

代码如下

ser.php

<?php

class MyWebsocket {

private $server;
private $fid=[];
# run()
public function toRun() {
$this->server = new swoole_websocket_server("0.0.0.0", 9502, SWOOLE_BASE, SWOOLE_SOCK_TCP); //SWOOLE_SSL  需要ssl才加
#监听WebSocket连接打开事件
$this->server->on('open', function ($server, $request) {
$this->server->push($request->fd, "hello, welcome ID:{$request->fd}\n");
$this->fid[]=$request->fd;   # $request->fd fd
});
#监听WebSocket消息事件
$this->server->on('message', function ($server, $frame) {   #$frame->data 消息内容
$msg = 'from' . $frame->fd . ":{$frame->data}\n";
foreach ($this->fid as $fd) {
$server->push($fd, $msg);
}
});

//监听WebSocket连接关闭事件
$this->server->on('close', function($ws, $fd) {
$fd_key = array_search($fd, $this->fid ? $this->fid : []);
$key_zero = isset($this->fid[0]) && $this->fid[0] == $fd ? TRUE : FALSE;  # key=0
if ($fd_key || $key_zero) {
unset($this->fid[$fd_key]);
}
echo "client-{$fd} is closed\n";
});

#onRequest回调    http://127.0.0.1:9502/?sendto=1,20,3&message=%E4%BD%A0%E5%A5%BD $this->server->on('request', function ($req, $respone) {
# get 两个参数, userid ","  发送消息
$list=[];
if (isset($req->get['sendto']) && isset($req->get['message'])) {
$user = explode(',', $req->get['sendto']);
$list = array_intersect($this->fid, $user);
if (!empty($list)) {
foreach ($list as $fd) {
$this->server->push($fd, $req->get['message']);
}
}
}
$total= count($this->fid);
$sendSum= count($list);
$respone->end("Current fid:{$respone->fd},  OnLine:{$total}, Send:{$sendSum}");

});

$this->server->start();
}

}

$app = new MyWebsocket();
$app->toRun();

客户端html

<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
</head>
<body>
<div id="msg"></div>
<input type="text" id="text">
<input type="submit" value="发送数据" onclick="sending()">
</body>
<script>
var msg = document.getElementById("msg");
var wsServer = 'ws://127.0.0.1:9502';
//调用websocket对象建立连接：
//参数：ws/wss(加密)：//ip:port （字符串）
var websocket = new WebSocket(wsServer);
//onopen监听连接打开
websocket.onopen = function (evt) {
//websocket.readyState 属性：
/*
CONNECTING    0    The connection is not yet open.
OPEN    1    The connection is open and ready to communicate.
CLOSING    2    The connection is in the process of closing.
CLOSED    3    The connection is closed or couldn't be opened.
*/
console.log(websocket.readyState);
};

function sending() {
var text = document.getElementById('text').value;
document.getElementById('text').value = '';
//向服务器发送数据
websocket.send(text);
}
//监听连接关闭
websocket.onclose = function (evt) {
msg.innerHTML+="Disconnected<br>";
};

//onmessage 监听服务器数据推送
websocket.onmessage = function (evt) {
msg.innerHTML += evt.data + '<br>';
console.log('Retrieved data from server: ' + evt.data);
};
//监听连接错误信息
websocket.onerror = function (evt, e) {
console.log('Error occured: ' + evt.data);
};

</script>
</html>

运行

php ser.php

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