ytdlp source: playback 403s because range is sent as a query param, not a Range header #345

Describe the bug

ytdlp source playback (introduced ~4.8.0) fails almost every track with a 403 during streaming, thrown from YoutubePersistentHttpStream (via YtdlpAudioTrack.process), even though the URL yt-dlp extracted is valid and playable.

Root cause (reproduced)

YoutubePersistentHttpStream overrides useHeadersForRange() to return false, so range requests are sent as a range=<start>-<end> query parameter appended to the googlevideo.com URL instead of a normal Range: header. YouTube's CDN now rejects that query-param form with 403, while a standard Range: header on the exact same URL succeeds.

Verified directly against the URL yt-dlp itself returned for a track (filesize/ext etc. all present, so this isn't an extraction failure):

$ curl -s -o /dev/null -w '%{http_code}\n' -H 'Range: bytes=0-1000' "$URL"
206

$ curl -s -o /dev/null -w '%{http_code}\n' "${URL}&range=0-11862014"
403

Same URL, same server/IP, same request otherwise — User-Agent doesn't matter either (tested with yt-dlp's own reported http_headers.User-Agent, a plain Apache-HttpClient-style UA, and no UA at all; all three return 403 with the query-param form and 206 with the header form).

This looks like a leftover from an older youtube-source technique for avoiding CDN throttling that YouTube has since started blocking outright — the same anti-bot shift that's currently breaking dev.lavalink.youtube (lavalink-devs/youtube-source#216, #217).

Lavalink logs

ERROR --- [back-1-thread-1] c.s.d.l.t.p.LocalAudioTrackExecutor : Error in playback of <videoId>
com.sedmelluq.discord.lavaplayer.tools.FriendlyException: Something broke when playing the track.
Caused by: java.lang.RuntimeException: Not success status code: 403
	at com.github.topi314.lavasrc.ytdlp.YtdlpAudioTrack.process(YtdlpAudioTrack.java:61)

To Reproduce

1. Configure the ytdlp LavaSrc source (plugins.lavasrc.sources.ytdlp: true) as the sole YouTube playback path.
2. Play basically any non-live YouTube track.
3. Playback starts loading, then fails partway through with the 403 above.

Expected behavior

Track streams normally.

Environment

• Lavalink 4 (ghcr.io/lavalink-devs/lavalink:4-alpine)
• lavasrc-plugin 4.8.3
• yt-dlp 2026.07.04 (current latest release)

Suggested fix

YoutubePersistentHttpStream.useHeadersForRange() should return true (or the override should be removed entirely, falling back to the parent PersistentHttpStream's header-based ranging).