Optional
endRequired for FilterType.AbsoluteRange; exclusive upper group boundary (coerced to bigint if number provided).
FilterType variant controlling starting subset (e.g. FilterType.LatestObject).
If true, deliver objects forward (ascending); if false, reverse/backward semantics (implementation dependent).
Fully qualified track identifier (FullTrackName).
Desired GroupOrder (e.g. GroupOrder.Original) specifying delivery ordering semantics.
Optional
parametersOptional extension VersionSpecificParameters appended to the SUBSCRIBE control message.
Subscriber priority (0 = highest, 255 = lowest). Values outside range are clamped. Fractional values are rounded.
Optional
startRequired for FilterType.AbsoluteStart / FilterType.AbsoluteRange; earliest Location to include.
Optional
trackCaller supplied alias for the track (else auto-generated); may be number or bigint.
Parameters for subscribing to a track's live objects.
Example: Latest object
Example: Absolute range