Forwards requests to upstream streaming providers while handling headers and authentication.

Data Parameter Format: The data parameter must be a encodeURIComponent() encoded JSON object:

{
  "url": "https://upstream-provider.com/stream.m3u8",
  "headers": {
    "Referer": "https://provider.com",
    "User-Agent": "Mozilla/5.0",
    "more": "headers..."
  }
}

The frontend does not have to care about these data objects, since the url fields from the backend response should automatically do that already.

Content-Type Handling: You will get that content type back, which you would, if you were requesting the url directly.

Caching:

• Subtitles: Cache subtitles up to 24 hours
• DO NOT cache proxy responses (pass through caching headers from upstream)