How do proxy servers like Proxtube work in redirecting traffic and unblocking videos?

Proxy servers like Proxtube work by intercepting requests from users trying to access blocked videos, redirecting those requests through their own servers, and then delivering the video content back to the user. This allows users to bypass restrictions set by websites or governments and access the content they want to see. 

// Example PHP code implementing a simple proxy server using cURL

$url = 'https://www.example.com/blocked-video.mp4';

$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_HEADER, 0);
curl_exec($ch);
curl_close($ch);

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