Cameras under load may accept TCP connection but never respond,
hanging tester workers indefinitely. Context timeout on the HTTP
request ensures workers are released.
Register http, https, httpx handlers with content-type detection:
- image/jpeg: single JPEG snapshots via go2rtc image.Open
- multipart/x-mixed-replace: MJPEG streams via mpjpeg.Open
- application/vnd.apple.mpegurl: HLS via hls.OpenURL
- auto-detect fallback via magic.Open (MPEG-TS, raw MJPEG, etc.)
Uses go2rtc tcp.Do for Basic + Digest auth and TLS handling.
eduard256