概述
workerman/http-client 是一个异步http客户端组件。所有请求响应异步非阻塞，内置连接池，消息请求和响应符合PSR7规范。
Workerman 5.0 版本中的异步HTTP协程客户端组件是一个基于PHP协程的高性能HTTP客户端，它能够充分利用PHP的异步特性来提高HTTP请求的效率和性能。这个组件允许开发者在编写PHP代码时，以同步的方式发送异步HTTP请求，从而使得编写的代码更加简洁易懂，同时也能够处理大量的并发请求。
特点
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异步非阻塞：所有的请求和响应都是异步进行的，不会阻塞主线程，这意味着可以同时处理多个HTTP请求和响应。
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内置连接池：为了提高效率和性能，该组件内置了连接池，可以复用TCP连接，减少建立和关闭连接的开销。
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符合PSR-7规范：消息请求和响应都符合PSR-7规范，这使得它能够与遵循该规范的其他PHP组件和库无缝集成。
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支持多种协议：除了HTTP和HTTPS协议，该组件还支持WebSocket、WSS等协议，使其能够应对更多的应用场景。
安装
composer require workerman/http-client
开源技术小栈注意：协程用法需要
workerman>=5.0、workerman/http-client>=2.0.0并安装composer require revolt/event-loop ^1.0.0
启动webman
/var/www/webman/admin.webman.tinywan.com # php start.php start
Workerman[start.php] start in DEBUG mode
------------------------------------------------------- WORKERMAN --------------------------------------------------------
Workerman/5.0.0 PHP/8.2.10 (Jit off) Linux/5.15.167.4-microsoft-standard-WSL2
-------------------------------------------------------- WORKERS ---------------------------------------------------------
event-loop proto user worker listen count state
revolt tcp root webman http://0.0.0.0:8288 24 [OK]
revolt tcp root monitor none 1 [OK]
--------------------------------------------------------------------------------------------------------------------------
协程用法
WorkerMan 中使用
declare(strict_types=1);
use Workerman\Worker;require_once '../vendor/autoload.php';try {$worker = new Worker();$worker->onWorkerStart = function () {$http = new Workerman\Http\Client();$response = $http->get('https://www.tinywan.com/');var_dump($response->getStatusCode());echo $response->getBody() . PHP_EOL;$response = $http->post('https://www.tinywan.com/', ['key1' => 'value1', 'key2' => 'value2']);var_dump($response->getStatusCode());echo $response->getBody() . PHP_EOL;$response = $http->request('https://www.tinywan.com/', ['method' => 'GET','version' => '1.1','headers' => ['Connection' => 'keep-alive'],'data' => ['key1' => 'value1', 'key2' => 'value2'],]);echo $response->getBody() . PHP_EOL;};Worker::runAll();
} catch (Throwable $throwable) {var_dump($throwable->getMessage());
}
http-client 协程异步并发
<?php
/*** @desc 伪代码* @author Tinywan(ShaoBo Wan)*/
declare(strict_types=1);use Workerman\Worker;
use \Workerman\Connection\TcpConnection;
use \Workerman\Protocols\Http\Request;require_once '../vendor/autoload.php';// 创建一个Worker监听8217端口，使用http协议通讯
$httpWorker = new Worker("http://0.0.0.0:8217");// 启动8个进程对外提供服务
$httpWorker->count = 8;// 接收到浏览器发送的数据时回复给浏览器
$httpWorker->onMessage = function (TcpConnection $connection, Request $request) {$http = new \Workerman\Http\Client();$count = 50;$result = [];while ($count--) {$startTime = microtime(true);echo '开始时间：' . $startTime . PHP_EOL;$response = $http->get('https://api.tinywan.com/systems/website');$endTime = microtime(true);echo '结束时间：' . $endTime . PHP_EOL;$result[] = sprintf('第%d个 | 耗时%s秒 | 状态码%d', $count, $endTime - $startTime, $response->getStatusCode());}$connection->send(json_encode($result));
};Worker::runAll();
webman 中使用
如果你需要在webman中使用异步http请求并将结果返回给前端，参考以下用法
<?php
declare(strict_types=1);namespace app\controller;use support\Request;
use support\Response;
use Throwable;
use Workerman\Protocols\Http\Chunk;class CoroutineController
{/*** @param Request $request* @return Response* @throws Throwable*/public function index(Request $request): Response{$connection = $request->connection;$http = new \Workerman\Http\Client();$http->get('https://api.tinywan.com/website', function ($response) use ($connection) {$connection->send(new Chunk($response->getBody()->getContents()));$connection->send(new Chunk('')); // 发送空的的chunk代表response结束});return response()->withHeaders(["Transfer-Encoding" => "chunked","Access-Control-Allow-Origin" => "*"]);}
}
以上用法是先给客户端返回一个带chunked的http头，然后将数据以chunk的方式发送给客户端。
