Add draft-lcurley-moq-largest-group extension#19
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Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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WalkthroughA new Internet‑Draft adds a MoQ Transport subscription filter "Largest Group" (Filter Type 🚥 Pre-merge checks | ✅ 3✅ Passed checks (3 passed)
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Actionable comments posted: 1
🤖 Prompt for all review comments with AI agents
Verify each finding against the current code and only fix it if needed.
Inline comments:
In `@draft-lcurley-moq-largest-group.md`:
- Around line 94-101: Clarify that when handling a SUBSCRIBE with the Largest
Group filter and the publisher has no groups yet (i.e., Largest.Group is
undefined), the publisher must deterministically wait for the first group
instead of using an undefined value or returning ambiguous behavior: treat
Largest.Group as "first available group" and begin delivery from {Largest.Group,
0} once that group is created (and document that the SUBSCRIBE remains pending
until then); update the paragraph that defines the start location for the
Largest Group filter (the line referencing {Largest.Group, 0} and the term
Largest.Group) to include this waiting semantics and the explicit note that
implementations SHOULD keep the SUBSCRIBE pending until the first group exists.
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Review profile: CHILL
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draft-lcurley-moq-largest-group.md
| When the publisher receives a SUBSCRIBE with the Largest Group filter, it computes the start location as: | ||
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| ~~~ | ||
| {Largest.Group, 0} | ||
| ~~~ | ||
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| Where `Largest.Group` is the group sequence number of the largest object known to the publisher at the time the SUBSCRIBE is processed. | ||
| Delivery begins from the first object (object 0) of that group. |
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Define behavior when no group exists yet.
Line 100 defines Largest.Group from the largest known object, but this is undefined if the publisher has not published any object for that track yet. Please specify deterministic behavior for that case (e.g., wait for first group, or reject with a specific error), otherwise implementations may diverge.
Proposed spec text refinement
When the publisher receives a SUBSCRIBE with the Largest Group filter, it computes the start location as:
@@
Where `Largest.Group` is the group sequence number of the largest object known to the publisher at the time the SUBSCRIBE is processed.
Delivery begins from the first object (object 0) of that group.
+If no object is known for the requested track at processing time, the publisher MUST
+define a deterministic fallback behavior (for example, defer delivery until the first
+group becomes available, consistent across implementations).📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| When the publisher receives a SUBSCRIBE with the Largest Group filter, it computes the start location as: | |
| ~~~ | |
| {Largest.Group, 0} | |
| ~~~ | |
| Where `Largest.Group` is the group sequence number of the largest object known to the publisher at the time the SUBSCRIBE is processed. | |
| Delivery begins from the first object (object 0) of that group. | |
| When the publisher receives a SUBSCRIBE with the Largest Group filter, it computes the start location as: | |
| ~~~ | |
| {Largest.Group, 0} | |
| ~~~ | |
| Where `Largest.Group` is the group sequence number of the largest object known to the publisher at the time the SUBSCRIBE is processed. | |
| Delivery begins from the first object (object 0) of that group. | |
| If no object is known for the requested track at processing time, the publisher MUST | |
| define a deterministic fallback behavior (for example, defer delivery until the first | |
| group becomes available, consistent across implementations). |
🧰 Tools
🪛 markdownlint-cli2 (0.21.0)
[warning] 96-96: Fenced code blocks should have a language specified
(MD040, fenced-code-language)
[warning] 96-96: Code block style
Expected: indented; Actual: fenced
(MD046, code-block-style)
🤖 Prompt for AI Agents
Verify each finding against the current code and only fix it if needed.
In `@draft-lcurley-moq-largest-group.md` around lines 94 - 101, Clarify that when
handling a SUBSCRIBE with the Largest Group filter and the publisher has no
groups yet (i.e., Largest.Group is undefined), the publisher must
deterministically wait for the first group instead of using an undefined value
or returning ambiguous behavior: treat Largest.Group as "first available group"
and begin delivery from {Largest.Group, 0} once that group is created (and
document that the SUBSCRIBE remains pending until then); update the paragraph
that defines the start location for the Largest Group filter (the line
referencing {Largest.Group, 0} and the term Largest.Group) to include this
waiting semantics and the explicit note that implementations SHOULD keep the
SUBSCRIBE pending until the first group exists.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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♻️ Duplicate comments (1)
draft-lcurley-moq-largest-group.md (1)
94-101:⚠️ Potential issue | 🟠 MajorDefine behavior when no group exists yet.
Line 100 defines
Largest.Groupfrom the largest known object, but this is undefined if the publisher has not published any object for that track yet. The specification should define deterministic behavior for this case (e.g., wait for the first group, or reject with a specific error code), otherwise implementations may diverge.📝 Proposed specification text refinement
Where `Largest.Group` is the group sequence number of the largest object known to the publisher at the time the SUBSCRIBE is processed. Delivery begins from the first object (object 0) of that group. +If no object is known for the requested track at processing time, the publisher MUST +wait until the first group becomes available and then begin delivery from {0, 0}.🤖 Prompt for AI Agents
Verify each finding against the current code and only fix it if needed. In `@draft-lcurley-moq-largest-group.md` around lines 94 - 101, The spec must define deterministic behavior when a SUBSCRIBE with the Largest Group filter is received but the publisher has no groups yet (i.e., Largest.Group is undefined); update the text around the start location "{Largest.Group, 0}" and the Largest.Group definition to state a single chosen behavior (for example: treat Largest.Group as the sequence number of the next group to be created and delay delivery until that first group exists, or reject the SUBSCRIBE with a specified error code such as "NoGroups" and explain retry semantics). Reference the symbols SUBSCRIBE, Largest.Group, and the start location "{Largest.Group, 0}" in the new text so implementers know whether to block until the first group or to return the explicit error and how to handle subsequent subscriptions.
🧹 Nitpick comments (1)
draft-lcurley-moq-largest-group.md (1)
100-100: Clarify scope of "largest object known to the publisher".For precision, consider specifying "largest object known to the publisher for the requested track" to avoid any ambiguity about whether this refers to the specific track being subscribed to versus the publisher's global state.
📝 Proposed clarification
-Where `Largest.Group` is the group sequence number of the largest object known to the publisher at the time the SUBSCRIBE is processed. +Where `Largest.Group` is the group sequence number of the largest object known to the publisher for the requested track at the time the SUBSCRIBE is processed.🤖 Prompt for AI Agents
Verify each finding against the current code and only fix it if needed. In `@draft-lcurley-moq-largest-group.md` at line 100, Clarify that "Largest.Group" refers to the largest object known to the publisher for the specific track being subscribed to: update the sentence containing "Where `Largest.Group` is the group sequence number of the largest object known to the publisher at the time the SUBSCRIBE is processed." to explicitly read something like "Where `Largest.Group` is the group sequence number of the largest object known to the publisher for the requested track at the time the SUBSCRIBE is processed," and ensure any surrounding text or examples (references to SUBSCRIBE and publisher) consistently use "requested track" or equivalent phrasing to avoid ambiguity.
🤖 Prompt for all review comments with AI agents
Verify each finding against the current code and only fix it if needed.
Duplicate comments:
In `@draft-lcurley-moq-largest-group.md`:
- Around line 94-101: The spec must define deterministic behavior when a
SUBSCRIBE with the Largest Group filter is received but the publisher has no
groups yet (i.e., Largest.Group is undefined); update the text around the start
location "{Largest.Group, 0}" and the Largest.Group definition to state a single
chosen behavior (for example: treat Largest.Group as the sequence number of the
next group to be created and delay delivery until that first group exists, or
reject the SUBSCRIBE with a specified error code such as "NoGroups" and explain
retry semantics). Reference the symbols SUBSCRIBE, Largest.Group, and the start
location "{Largest.Group, 0}" in the new text so implementers know whether to
block until the first group or to return the explicit error and how to handle
subsequent subscriptions.
---
Nitpick comments:
In `@draft-lcurley-moq-largest-group.md`:
- Line 100: Clarify that "Largest.Group" refers to the largest object known to
the publisher for the specific track being subscribed to: update the sentence
containing "Where `Largest.Group` is the group sequence number of the largest
object known to the publisher at the time the SUBSCRIBE is processed." to
explicitly read something like "Where `Largest.Group` is the group sequence
number of the largest object known to the publisher for the requested track at
the time the SUBSCRIBE is processed," and ensure any surrounding text or
examples (references to SUBSCRIBE and publisher) consistently use "requested
track" or equivalent phrasing to avoid ambiguity.
ℹ️ Review info
⚙️ Run configuration
Configuration used: Organization UI
Review profile: CHILL
Plan: Pro
Run ID: b762fee6-2d91-4288-ac5c-c995d3cbfbaf
📒 Files selected for processing (1)
draft-lcurley-moq-largest-group.md
1 participant
Summary
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