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harden reconnect behaviour#1148

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lukasIO wants to merge 18 commits into
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lukas/reconnect
Open

harden reconnect behaviour#1148
lukasIO wants to merge 18 commits into
mainfrom
lukas/reconnect

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@lukasIO

@lukasIO lukasIO commented Jun 9, 2026

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Before you submit your PR

Make sure the following is true before submitting your PR:

  • I have read the contributing guidelines and validated that this PR will be accepted.
  • I have read and followed the principles regarding breaking changes, testing, and code quality.

PR description

Describe the changes in this PR. Explain what the PR is meant to solve and how to reproduce the issue in the first place.

Breaking changes

If this PR introduces breaking changes, list them here and document the rationale for introducing such a change.

MSRV

If the PR modifies the crate's MSRV (Minimum Supported Rust Version), document it here.

Testing

Ideally, unit test the code you add, but ensure you're not repeating existing test cases. Use as many already written scaffolding, utilities as possible; write your own, when needed. If external services, APIs, tokens are required (e.g., running an LK server instance), provide the necessary information. Make sure your tests perform useful, context-aware assertions and do not simply emulate "happy paths".

Async

We want the project to be runtime-agnostic, so please reuse what's already in livekit-runtime and feel free to add anything missing. It's ok to use Tokio directly, when writing unit tests, if necessary. When testing, do not use artificial delays for the state to "catch up"; instead, respect the event flow and subscribe properly using channels or other mechanisms.

@lukasIO lukasIO changed the title Lukas/reconnect harden reconnect behaviour Jun 9, 2026
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github-actions Bot commented Jun 9, 2026

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Changeset

The following package versions will be affected by this PR:

Package Bump
livekit patch
livekit-api patch
livekit-ffi patch
livekit-uniffi patch

Comment thread livekit/src/rtc_engine/mod.rs Outdated
Comment thread livekit/src/rtc_engine/rtc_session.rs
// A server-requested reconnect signals retry_now_notify to collapse
// this wait so the next attempt fires immediately.
let backoff = reconnect_backoff_delay(i);
tokio::select! {

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issue: If the room is explicitly closed by the user, this task will not be properly cancelled. The addition of this select! brought my attention here, but this is a pre-existing issue.

You will find there is a close_notifier referenced on L805 with a comment mentioning it needs to be used as a signal to cancel this task—however, this was wired up. Solution is to wire this up and use it as a branch in your select! in order to be able to break out of the loop early when the room is closed.

@lukasIO lukasIO Jun 19, 2026

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great catch!

addressed in e3320d3

@lukasIO lukasIO marked this pull request as ready for review June 19, 2026 11:43
@lukasIO lukasIO requested a review from ladvoc June 19, 2026 11:43
@github-actions github-actions Bot requested a review from 1egoman as a code owner June 19, 2026 11:44

@lukasIO lukasIO Jun 19, 2026

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wanted to call this out specifically. It's "just" a spec generated by https://github.com/juxt/allium, but in case someone is opposed to adding this in, let me know

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2 participants