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Artem Gafarov's questions

Martin Hope
Artem Gafarov
Asked: 2024-10-16 17:30:03 +0000 UTC
  • 5

我正在编写代码来使用yt_dlp.我的任务是确保如果连接到 URL 出现问题，则会调用错误处理程序。代码如下：

import yt_dlp

output = 'downloads/%(title)s.mp4'
ydl_opts = {
    'outtmpl': output,
    'quiet': True,
    'ignoreerrors': False,
}
video_url = 'https://www.youtube.com/watch?v=a4fVPvDTYVQ'

with yt_dlp.YoutubeDL(ydl_opts) as ydl:
    try:
        print("Code:", ydl.download([video_url]))
    except yt_dlp.utils.DownloadError:
        print("Download Error")
    except Exception as e:
        print("Error:", e)
    else:
        print("Success!")

就我而言，YouTube 一般无法连接。控制台日志yt_dlp显示以下消息：WARNING: [youtube] Failed to download m3u8 information: HTTPSConnectionPool(host='manifest.googlevideo.com', port=443): Read timed out. (read timeout=20.0)。但是，该函数正常工作并最终进入块而不是错误处理程序else。

如何确保如果出现连接问题，函数ydl.download([video_url])会因错误而崩溃？

python
Martin Hope
Artem Gafarov
Asked: 2024-09-20 17:45:19 +0000 UTC
  • 5

我正在编写代码从 VK 下载视频，而不使用 VK API。任务如下：获取视频链接，然后向该 URL 发送请求并接收可观看该视频的页面作为响应。即模拟来自真实浏览器的请求。

为此，我尝试从真实的浏览器请求中复制所有标头，如下所示：

    req, err := http.NewRequest("GET", URL, nil)

    req.Header.Set("User-Agent", "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/126.0.0.0 YaBrowser/24.7.0.0 Safari/537.36")
    req.Header.Set("Accept", "text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.7")
    req.Header.Set("Accept-Encoding", "gzip, deflate, br, zstd")
    req.Header.Set("Accept-Language", "ru,en;q=0.9")
    req.Header.Set("Cache-Control", "max-age=0")

    req.Header.Set("Sec-Ch-Ua", "\"Not/A)Brand\";v=\"8\", \"Chromium\";v=\"126\", \"YaBrowser\";v=\"24.7\", \"Yowser\";v=\"2.5\"")
    req.Header.Set("Sec-Ch-Ua-Mobile", "?0")
    req.Header.Set("Sec-Ch-Ua-Platform", "\"macOS\"")
    req.Header.Set("Sec-Fetch-Dest", "document")
    req.Header.Set("Sec-Fetch-Mode", "navigate")
    req.Header.Set("Sec-Fetch-Site", "same-origin")

    req.Header.Set("Upgrade-Insecure-Requests", "1")

    req.Header.Set("Priority", "u=0, I")

作为回应，我希望看到一个带有视频的页面以供进一步工作，但实际上我收到了一个页面，其中要求我更新/安装最新版本的浏览器。在 Pastebin 上收到的响应示例：URL。页面的视觉展示

问题是：如何在 Go 中模拟来自“现代”浏览器的请求？

完整的代码如下所示：

const URL = "https://m.vk.com/video-85466065_456241727"

req, err := http.NewRequest("GET", URL, nil)

req.Header.Set("User-Agent", "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/126.0.0.0 YaBrowser/24.7.0.0 Safari/537.36")
    req.Header.Set("Accept", "text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.7")
req.Header.Set("Accept-Encoding", "gzip, deflate, br, zstd")
req.Header.Set("Accept-Language", "ru,en;q=0.9")
req.Header.Set("Cache-Control", "max-age=0")

req.Header.Set("Sec-Ch-Ua", "\"Not/A)Brand\";v=\"8\", \"Chromium\";v=\"126\", \"YaBrowser\";v=\"24.7\", \"Yowser\";v=\"2.5\"")
req.Header.Set("Sec-Ch-Ua-Mobile", "?0")
req.Header.Set("Sec-Ch-Ua-Platform", "\"macOS\"")
req.Header.Set("Sec-Fetch-Dest", "document")
req.Header.Set("Sec-Fetch-Mode", "navigate")
req.Header.Set("Sec-Fetch-Site", "same-origin")

req.Header.Set("Upgrade-Insecure-Requests", "1")

req.Header.Set("Priority", "u=0, i")

client := &http.Client{}

res, err := client.Do(req)
golang