livekit: Preserve tokens on channel rejoin - #59388
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When a user rejoins a channel they already have a stale connection in (e.g. after a crash and reconnect within RECONNECT_TIMEOUT), the stale-connection cleanup in join_channel_internal called remove_participant on LiveKit. On LiveKit Cloud that revokes the identity's tokens, including the fresh one just minted for the rejoin, leaving the user connected to collab but unable to join audio. The removal is also redundant: rejoining with the same identity makes LiveKit evict the prior session anyway. Skip remove_participant when the room being cleaned up is the room being rejoined; genuine leaves and moves to other channels still remove (and revoke) as before. The fake LiveKit server can now model Cloud's revoke-on-removal behavior (off by default), so the integration test reproduces the actual no-audio symptom rather than a proxy.
The LiveKit connect retry loop refreshed its token by sending RejoinRoom to collab on every failed attempt, forever. A single stuck client thus emitted a channel-wide RejoinRoom/room-update storm and never converged, since a revoked token can't be fixed by minting another one. Bound the loop to a fixed number of attempts with backoff using the same token, then give up. Token refresh on a genuine collab reconnect is still handled separately via ensure_livekit_connection.
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This was referenced Jun 18, 2026
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NsdHSO
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Jun 23, 2026
- **Revert "livekit: Preserve tokens on channel rejoin (zed-industries#59388)"** - **Revert "call: Log LiveKit connection info refresh outcomes in retry loop (zed-industries#59205)"** - **Revert "audio: Fix phantom presence in channels (zed-industries#59195)"** - **proto: Reserve RejoinRoomResponse field 4 after revert** We've observed a spike of phantom collaborator issues after this fixes. This sucks and I'm quite unhappy about it. # Objective - Describe the objective or issue this PR addresses. - If you're fixing a specific issue, use "Fixes #X" for each issue as [described in the GitHub docs](https://docs.github.com/en/issues/tracking-your-work-with-issues/using-issues/linking-a-pull-request-to-an-issue#linking-a-pull-request-to-an-issue-using-a-keyword). ## Solution - Describe the solution used to achieve the objective above. ## Testing - Did you test these changes? If so, how? - Are there any parts that need more testing? - How can other people (reviewers) test your changes? Is there anything specific they need to know? - If relevant, what platforms did you test these changes on, and are there any important ones you can't test? ## Self-Review Checklist: - [ ] I've reviewed my own diff for quality, security, and reliability - [ ] Unsafe blocks (if any) have justifying comments - [ ] The content adheres to Zed's UI standards ([UX/UI](https://github.com/zed-industries/zed/blob/main/CONTRIBUTING.md#uiux-checklist) and [icon](https://github.com/zed-industries/zed/blob/main/crates/icons/README.md) guidelines) - [ ] Tests cover the new/changed behavior - [ ] Performance impact has been considered and is acceptable ## Showcase > This section is optional. If this PR does not include a visual change or does not add a new user-facing feature, you can delete this section. - Help others understand the result of this PR by showcasing your awesome work! - If this PR includes a visual change, consider adding a screenshot, GIF, or video - A before/after comparison is very useful for changes to existing features! While a showcase should aim to be brief and digestible, you can use a toggleable section to save space on longer showcases: <details> <summary>Click to view showcase</summary> My super cool demos here </details> --- Release Notes: - N/A --------- Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
saranblock3
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Jun 23, 2026
- **Revert "livekit: Preserve tokens on channel rejoin (zed-industries#59388)"** - **Revert "call: Log LiveKit connection info refresh outcomes in retry loop (zed-industries#59205)"** - **Revert "audio: Fix phantom presence in channels (zed-industries#59195)"** - **proto: Reserve RejoinRoomResponse field 4 after revert** We've observed a spike of phantom collaborator issues after this fixes. This sucks and I'm quite unhappy about it. # Objective - Describe the objective or issue this PR addresses. - If you're fixing a specific issue, use "Fixes #X" for each issue as [described in the GitHub docs](https://docs.github.com/en/issues/tracking-your-work-with-issues/using-issues/linking-a-pull-request-to-an-issue#linking-a-pull-request-to-an-issue-using-a-keyword). ## Solution - Describe the solution used to achieve the objective above. ## Testing - Did you test these changes? If so, how? - Are there any parts that need more testing? - How can other people (reviewers) test your changes? Is there anything specific they need to know? - If relevant, what platforms did you test these changes on, and are there any important ones you can't test? ## Self-Review Checklist: - [ ] I've reviewed my own diff for quality, security, and reliability - [ ] Unsafe blocks (if any) have justifying comments - [ ] The content adheres to Zed's UI standards ([UX/UI](https://github.com/zed-industries/zed/blob/main/CONTRIBUTING.md#uiux-checklist) and [icon](https://github.com/zed-industries/zed/blob/main/crates/icons/README.md) guidelines) - [ ] Tests cover the new/changed behavior - [ ] Performance impact has been considered and is acceptable ## Showcase > This section is optional. If this PR does not include a visual change or does not add a new user-facing feature, you can delete this section. - Help others understand the result of this PR by showcasing your awesome work! - If this PR includes a visual change, consider adding a screenshot, GIF, or video - A before/after comparison is very useful for changes to existing features! While a showcase should aim to be brief and digestible, you can use a toggleable section to save space on longer showcases: <details> <summary>Click to view showcase</summary> My super cool demos here </details> --- Release Notes: - N/A --------- Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
weihuoya
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Jun 25, 2026
- **Revert "livekit: Preserve tokens on channel rejoin (zed-industries#59388)"** - **Revert "call: Log LiveKit connection info refresh outcomes in retry loop (zed-industries#59205)"** - **Revert "audio: Fix phantom presence in channels (zed-industries#59195)"** - **proto: Reserve RejoinRoomResponse field 4 after revert** We've observed a spike of phantom collaborator issues after this fixes. This sucks and I'm quite unhappy about it. # Objective - Describe the objective or issue this PR addresses. - If you're fixing a specific issue, use "Fixes #X" for each issue as [described in the GitHub docs](https://docs.github.com/en/issues/tracking-your-work-with-issues/using-issues/linking-a-pull-request-to-an-issue#linking-a-pull-request-to-an-issue-using-a-keyword). ## Solution - Describe the solution used to achieve the objective above. ## Testing - Did you test these changes? If so, how? - Are there any parts that need more testing? - How can other people (reviewers) test your changes? Is there anything specific they need to know? - If relevant, what platforms did you test these changes on, and are there any important ones you can't test? ## Self-Review Checklist: - [ ] I've reviewed my own diff for quality, security, and reliability - [ ] Unsafe blocks (if any) have justifying comments - [ ] The content adheres to Zed's UI standards ([UX/UI](https://github.com/zed-industries/zed/blob/main/CONTRIBUTING.md#uiux-checklist) and [icon](https://github.com/zed-industries/zed/blob/main/crates/icons/README.md) guidelines) - [ ] Tests cover the new/changed behavior - [ ] Performance impact has been considered and is acceptable ## Showcase > This section is optional. If this PR does not include a visual change or does not add a new user-facing feature, you can delete this section. - Help others understand the result of this PR by showcasing your awesome work! - If this PR includes a visual change, consider adding a screenshot, GIF, or video - A before/after comparison is very useful for changes to existing features! While a showcase should aim to be brief and digestible, you can use a toggleable section to save space on longer showcases: <details> <summary>Click to view showcase</summary> My super cool demos here </details> --- Release Notes: - N/A --------- Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
This was referenced Jul 1, 2026
This was referenced Jul 10, 2026
jolutz
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Aug 8, 2026
- **collab: Don't revoke LiveKit token when rejoining the same channel** - **call: Bound LiveKit reconnect attempts and decouple from collab rejoin** # Objective - Describe the objective or issue this PR addresses. - If you're fixing a specific issue, use "Fixes #X" for each issue as [described in the GitHub docs](https://docs.github.com/en/issues/tracking-your-work-with-issues/using-issues/linking-a-pull-request-to-an-issue#linking-a-pull-request-to-an-issue-using-a-keyword). ## Solution - Describe the solution used to achieve the objective above. ## Testing - Did you test these changes? If so, how? - Are there any parts that need more testing? - How can other people (reviewers) test your changes? Is there anything specific they need to know? - If relevant, what platforms did you test these changes on, and are there any important ones you can't test? ## Self-Review Checklist: - [ ] I've reviewed my own diff for quality, security, and reliability - [ ] Unsafe blocks (if any) have justifying comments - [ ] The content adheres to Zed's UI standards ([UX/UI](https://github.com/zed-industries/zed/blob/main/CONTRIBUTING.md#uiux-checklist) and [icon](https://github.com/zed-industries/zed/blob/main/crates/icons/README.md) guidelines) - [ ] Tests cover the new/changed behavior - [ ] Performance impact has been considered and is acceptable ## Showcase > This section is optional. If this PR does not include a visual change or does not add a new user-facing feature, you can delete this section. - Help others understand the result of this PR by showcasing your awesome work! - If this PR includes a visual change, consider adding a screenshot, GIF, or video - A before/after comparison is very useful for changes to existing features! While a showcase should aim to be brief and digestible, you can use a toggleable section to save space on longer showcases: <details> <summary>Click to view showcase</summary> My super cool demos here </details> --- Release Notes: - N/A or Added/Fixed/Improved ...
jolutz
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Aug 8, 2026
- **Revert "livekit: Preserve tokens on channel rejoin (zed-industries#59388)"** - **Revert "call: Log LiveKit connection info refresh outcomes in retry loop (zed-industries#59205)"** - **Revert "audio: Fix phantom presence in channels (zed-industries#59195)"** - **proto: Reserve RejoinRoomResponse field 4 after revert** We've observed a spike of phantom collaborator issues after this fixes. This sucks and I'm quite unhappy about it. # Objective - Describe the objective or issue this PR addresses. - If you're fixing a specific issue, use "Fixes #X" for each issue as [described in the GitHub docs](https://docs.github.com/en/issues/tracking-your-work-with-issues/using-issues/linking-a-pull-request-to-an-issue#linking-a-pull-request-to-an-issue-using-a-keyword). ## Solution - Describe the solution used to achieve the objective above. ## Testing - Did you test these changes? If so, how? - Are there any parts that need more testing? - How can other people (reviewers) test your changes? Is there anything specific they need to know? - If relevant, what platforms did you test these changes on, and are there any important ones you can't test? ## Self-Review Checklist: - [ ] I've reviewed my own diff for quality, security, and reliability - [ ] Unsafe blocks (if any) have justifying comments - [ ] The content adheres to Zed's UI standards ([UX/UI](https://github.com/zed-industries/zed/blob/main/CONTRIBUTING.md#uiux-checklist) and [icon](https://github.com/zed-industries/zed/blob/main/crates/icons/README.md) guidelines) - [ ] Tests cover the new/changed behavior - [ ] Performance impact has been considered and is acceptable ## Showcase > This section is optional. If this PR does not include a visual change or does not add a new user-facing feature, you can delete this section. - Help others understand the result of this PR by showcasing your awesome work! - If this PR includes a visual change, consider adding a screenshot, GIF, or video - A before/after comparison is very useful for changes to existing features! While a showcase should aim to be brief and digestible, you can use a toggleable section to save space on longer showcases: <details> <summary>Click to view showcase</summary> My super cool demos here </details> --- Release Notes: - N/A --------- Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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While a showcase should aim to be brief and digestible, you can use a toggleable section to save space on longer showcases:
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