問題描述

根據(jù)url直接獲取文件流發(fā)送給客戶端，服務(wù)器本地不做存儲，當(dāng)前參考文檔 http://www.wtbis.cn/doc/workerman/components/workerman-http-client.html 寫的代碼文件時下載下來了但是報文件是損壞的打不開，一下是具體代碼

public function download(Request $request): \support\Response
{
    $url = $request->get('url');
    if (empty($url)) {
        return response_json(400, '參數(shù)不能為空');
    }
    $headers = get_headers($url, 1);

    if (!$headers || !str_contains($headers[0], '200')) {
        return response_json(400, 'URL不可訪問', null, 403);
    }

    try {
        $connection = $request->connection;
        $http = new Client();
        $http->request($url, [
            'method' => 'GET',
            'progress' => function ($buffer) use ($connection) {
                $connection->send(new Chunk($buffer));
            },
            'success' => function ($response) use ($connection) {
                $connection->send(new Chunk('')); // 發(fā)送空的的chunk代表response結(jié)束
            },
        ]);
    } catch (\Throwable $e) {
        return response_json(500, $e->getMessage());
    }
    return response()->withHeaders([
        "Content-Type" => $headers['Content-Type'],
        "Transfer-Encoding" => "chunked",
    ]);
}