v1.13.2

vercel/streamdownv1.13.2Jun 27, 2026by boks1971

AI Summary

A WebRTC library update focusing on metrics, session timer management, and metadata size limits to improve observability and stability.

Key Highlights

Added Prometheus metrics for join latency and peer connection state
Added RTC session timer restart to re-anchor participant duration
Enforced a 512 KiB cap on all metadata to prevent abuse
Added Egress V2 API

New Features

Prometheus metrics for join latency and peer connection state
RTC session timer restart functionality
Metadata size cap enforcement (512 KiB)
Egress V2 API
Participant capabilities reporting in ParticipantInfo

Full Release Notes

### Added

- Add Prometheus metrics for join latency and peer connection state (#4574, #4616)
- Preserve original expiry when refreshing token (#4580)
- Add grants expiry to Auth context (#4581)
- Add ability to run pprof on dedicated HTTP server (#4584)
- Add API to get latest node stats (#4589)
- Enforce subscription permission to data track (#4588)
- egress v2 api (#4592)
- agent: thread attributes map from dispatch to job (#4598)
- Log subscription limit breaches (#4603)
- Acquire requested video layer directly at HIGH quality by default (#4595)
- Report participant capabilities in ParticipantInfo (#4606)
- Add option to force drain rtcService/agentService connections (#4618)
- Add support for data blob (a. k. a. async participant attributes) (#4619)

### Changed

- Update dependencies: pion/sctp, DTLS v3.1.4, protocol (#4587, #4601, #4623)
- rtc: add RestartSessionTimer to re-anchor participant session duration (#4566)
- Record more RTC cancellation points (#4600)
- Cap all metadata at 512 KiB; enforce on join, agent dispatch, and embedded agents (#4602)
- Tighten up publish latency stat (#4615)
- Echo offered audio payload types in single-PC subscriber answer (#4614)

### Fixed

- Fix skipped packets accounting (#4604)
- Do not log due to negative getting interpreted as large unsigned positive (#4605)
- Do not call nil callback (#4607)