swoole——从入门到放弃(一)
一、swoole的源码包安装
- 下载swoole源码:
git clone https://gitee.com/swoole/swoole.git
-
通过phpize(扩展php扩展模块,建立php外挂模块):
cd swoole
- 执行:
your/phpize/path
./configure --with-php-config=your/php/path/bin/php-config
make && make install
-
可以看到swoole.so的位置
- 我的位置是:
/opt/soft/php/lib/php/extensions/no-debug-non-zts-20170718/
- 我的位置是:
-
配置php.ini
- 添加
extension=swoole.so
- 添加
- 通过
php -m
命令,可以看到php的扩展模块 -
检测swoole安装成功并且php支持swoole
cd your/swoole/path/examples/server
-
php echo.php
(如果进程被阻塞,则说明成功) -
netstat -anp | grep 9501
(查看swoole开启的端口号)
二、网络通信引擎
学习swoole需要去翻阅文档,swoole文档
1.通过swoole创建一个最简单的tcp服务
tcp服务端(tcp_server.php)
//创建Server对象,监听 127.0.0.1:9501端口
$serv = new swoole_server("127.0.0.1", 9501);
$serv->set([
'worker_num' => 4, // worker进程数,cpu 1-4倍
'max_request' => 100,
]);
/**
* 监听连接进入事件
* $fd 客户端连接服务端的唯一标识
* $reactor_id 线程id
*/
$serv->on('connect', function ($serv, $fd, $reactor_id) {
echo "Client: {$fd} - {$reactor_id} - Connect.\n";
});
//监听数据接收事件
$serv->on('receive', function ($serv, $fd, $reactor_id, $data) {
$serv->send($fd, "Server: ".$data);
});
//监听连接关闭事件
$serv->on('close', function ($serv, $fd) {
echo "Client: Close.\n";
});
//启动服务器
$serv->start();
tcp客户端(tcp_client.php)
// 创建tcp客户端
$client = new swoole_client(SWOOLE_SOCK_TCP);
// 连接tcp服务端
if (!$client->connect("127.0.0.1", 9501)) {
echo '连接失败';
exit;
}
// php cli
fwrite(STDOUT, '请输入:');
$msg = trim(fgets(STDIN));
// 发送消息给tcp服务端
if (!$client->send($msg)) {
echo '发送消息失败';
exit;
}
// 接收
$result = $client->recv();
echo $result;
2.拓展:php的四种回调
- 匿名函数
$server->on('Request', function ($req, $resp) {
echo "hello world";
});
- 类静态方法
class A
{
static function test($req, $resp)
{
echo "hello world";
}
}
$server->on('Request', 'A::Test');
$server->on('Request', array('A', 'Test'));
- 函数
function my_onRequest($req, $resp)
{
echo "hello world";
}
$server->on('Request', 'my_onRequest');
- 对象方法
class A
{
function test($req, $resp)
{
echo "hello world";
}
}
$object = new A();
$server->on('Request', array($object, 'test'));
小技巧:查看开启的worker进程:ps aft | grep tcp_server.php
3. udp的服务端和客户端可以根据文档自行创建
4. http服务
// 监听所有地址和9501端口
$http = new swoole_http_server('0.0.0.0', 9501);
// 动静分离配置
$http->set([
// 开启静态请求
'enable_static_handler' => true,
// 静态资源目录
'document_root' => '/opt/app/code1/',
]);
$http->on('request', function ($request, $response) {
// 获取get请求的参数
$param = json_encode($request->get);
// 设置cookie
$response->cookie('name', 'ronaldo', time() + 1800);
// 输出到页面
$response->end("<h1>Hello Swoole - {$param}</h1>");
});
// 开启http服务
$http->start();
5.通过swoole创建websocket服务
websocket服务端(websocket_server.php)
// 监听所有地址和9502端口
$server = new swoole_websocket_server('0.0.0.0', 9502);
// 动静分离配置
$server->set([
// 开启静态请求
'enable_static_handler' => true,
// 静态资源目录
'document_root' => '/opt/app/swoole/websocket',
]);
$server->on('open', function ($server, $request) {
echo "server:handshake success with fd - {$request->fd}\n";
});
$server->on('message', function ($server, $frame) {
echo "receive from {$frame->fd}:{$frame->data},opcode:{$frame->opcode},fin:{$frame->finish}\n";
$server->push($frame->fd, "this is server");
});
$server->on('close', function ($server, $fd) {
echo "client - {$fd} - close\n";
});
$server->start();
websocket客户端 (websockt_client.html)
// 创建websocket实例
var websocketURL = "ws://www.rona1do.top:9502";
var websocket = new WebSocket(websocketURL);
// 实例化对象的onopen属性
websocket.onopen = function (ev) {
websocket.send("hello-websocket");
console.log("connect-swoole-success");
}
// 实例化对象的onmessage属性,接收服务端返回的数据
websocket.onmessage = function (ev) {
console.log("websockect-server-return-data:" + ev.data);
}
// close
websocket.onclose = function (ev) {
console.log("close");
}
6. 使用面向对象来优化websocket服务代码
class WebSocket {
const HOST = '0.0.0.0';
const PORT = 9502;
private $ws = null;
function __construct()
{
$this->ws = new swoole_websocket_server(self::HOST, self::PORT);
$this->ws->on('open', [$this, 'onOpen']);
$this->ws->on('message', [$this, 'onMessage']);
$this->ws->on('close', [$this, 'onClose']);
$this->ws->start();
}
// 监听websocket连接事件
function onOpen($server, $request) {
echo "server: handshake success with fd{$request->fd}\n";
}
// 监听websocket消息接收事件
function onMessage($server, $frame) {
echo "receive from {$frame->fd}:{$frame->data},opcode:{$frame->opcode},fin:{$frame->finish}\n";
$server->push($frame->fd, "this is server");
}
// 监听客户端关闭事件
function onClose($server, $fd) {
echo "Client:{$fd} closes\n";
}
}
7.swoole中的task小案例
onTask:在task_worker进程内被调用。worker进程可以使用swoole_server_task函数向task_worker进程投递新的任务。当前的Task进程在调用onTask回调函数时会将进程状态切换为忙碌,这时将不再接收新的Task,当onTask函数返回时会将进程状态切换为空闲然后继续接收新的Task。
onFinish:当worker进程投递的任务在task_worker中完成时,task进程会通过swoole_server->finish()方法将任务处理的结果发送给worker进程。
class Websocket {
const HOST = '0.0.0.0';
const PORT = 9502;
private $ws = null;
public function __construct()
{
$this->ws = new swoole_websocket_server(self::HOST, self::PORT);
$this->ws->set([
'worker_num' => 2,
'task_worker_num' => 2, // 要想使用task必须要指明
]);
$this->ws->on('open', [$this, 'onOpen']);
$this->ws->on('message', [$this, 'onMessage']);
$this->ws->on('task', [$this, 'onTask']);
$this->ws->on('finish', [$this, 'onFinish']);
$this->ws->on('close', [$this, 'onClose']);
$this->ws->start();
}
public function onOpen($server, $request)
{
echo "server:handshake success with fd:{$request->fd}\n";
}
public function onMessage($server, $frame)
{
echo "receive from {$frame->fd}:{$frame->data}\n";
// 需要投递的任务数据
$data = [
'fd' => $frame->fd,
'msg' => 'task',
];
$server->task($data);
$server->push($frame->fd, 'this is server');
}
// 处理投递的任务方法,非阻塞
public function onTask($server, $task_id, $worker_id, $data)
{
print_r($data);
// 模拟大量数据的操作
sleep(10);
return "task_finish";
}
// 投递任务处理完毕调用的方法
public function onFinish($server, $task_id, $data)
{
echo "task_id:{$task_id}\n";
echo "task finish success:{$data}\n";
}
public function onClose($server, $fd)
{
echo "Client:close";
}
}
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