Fix multipart file limit hangs

[tim-smart]

Summary

• terminate active multipart file callbacks when a parser limit is reached or input ends unexpectedly
• stop parsing consistently after total-size and per-part limit failures
• propagate FileTooLarge, BodyTooLarge, and truncated-body parse failures through the multipart wrapper without hanging
• add a patch changeset for the user-visible fix

Root cause

After a file part had been emitted, terminal parser errors did not send the file callback its final null chunk. The file stream therefore kept pumping an already-stopped or exhausted parser indefinitely instead of allowing the outer multipart stream to surface the failure.

The total-size path also did not mark parsing as stopped, so later parser errors could replace the original MaxTotalSize failure. All terminal limit paths now share one stop operation, and truncated input routes through it as well.

Validation

• pnpm check
• pnpm vitest run packages/effect/test/unstable/http/Multipart.test.ts (13 tests)
• pnpm exec changeset status --since origin/main
• pnpm exec oxlint packages/effect/src/unstable/http/MultipartParser/internal/multipart.ts packages/effect/test/unstable/http/Multipart.test.ts
• pnpm exec dprint check packages/effect/src/unstable/http/MultipartParser/internal/multipart.ts packages/effect/test/unstable/http/Multipart.test.ts .changeset/fix-multipart-file-stream-limits.md

Closes EFF-573

[changeset-bot]

🦋 Changeset detected

Latest commit: 67bd0e5

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 30 packages

Name	Type
effect	Patch
@effect/ai-anthropic	Patch
@effect/ai-openai	Patch
@effect/ai-openai-compat	Patch
@effect/ai-openrouter	Patch
@effect/atom-react	Patch
@effect/atom-solid	Patch
@effect/atom-vue	Patch
@effect/docgen	Patch
@effect/doctest	Patch
@effect/openapi-generator	Patch
@effect/opentelemetry	Patch
@effect/platform-browser	Patch
@effect/platform-bun	Patch
@effect/platform-deno	Patch
@effect/platform-node	Patch
@effect/platform-node-shared	Patch
@effect/sql-clickhouse	Patch
@effect/sql-d1	Patch
@effect/sql-libsql	Patch
@effect/sql-mssql	Patch
@effect/sql-mysql2	Patch
@effect/sql-pg	Patch
@effect/sql-pglite	Patch
@effect/sql-sqlite-bun	Patch
@effect/sql-sqlite-do	Patch
@effect/sql-sqlite-node	Patch
@effect/sql-sqlite-react-native	Patch
@effect/sql-sqlite-wasm	Patch
@effect/vitest	Patch

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[github-actions]

Bundle Size Analysis

Generated from PR build output; treat the content below as untrusted.

File Name	Current Size	Previous Size	Difference
basic.ts	6.92 KB	6.92 KB	0.00 KB (0.00%)
batching.ts	9.72 KB	9.72 KB	0.00 KB (0.00%)
brand.ts	6.60 KB	6.60 KB	0.00 KB (0.00%)
cache.ts	10.59 KB	10.59 KB	0.00 KB (0.00%)
config.ts	20.91 KB	20.91 KB	0.00 KB (0.00%)
differ.ts	19.77 KB	19.77 KB	0.00 KB (0.00%)
http-client.ts	21.52 KB	21.52 KB	0.00 KB (0.00%)
logger.ts	10.81 KB	10.81 KB	0.00 KB (0.00%)
metric.ts	8.86 KB	8.86 KB	0.00 KB (0.00%)
optic.ts	6.68 KB	6.68 KB	0.00 KB (0.00%)
pubsub.ts	14.86 KB	14.86 KB	0.00 KB (0.00%)
queue.ts	11.54 KB	11.54 KB	0.00 KB (0.00%)
schedule.ts	10.71 KB	10.71 KB	0.00 KB (0.00%)
schema-class.ts	19.48 KB	19.48 KB	0.00 KB (0.00%)
schema-fromJsonSchemaDocument.ts	29.41 KB	29.41 KB	0.00 KB (0.00%)
schema-representation-roundtrip.ts	25.63 KB	25.63 KB	0.00 KB (0.00%)
schema-string-transformation.ts	13.55 KB	13.55 KB	0.00 KB (0.00%)
schema-string.ts	11.09 KB	11.09 KB	0.00 KB (0.00%)
schema-template-literal.ts	15.38 KB	15.38 KB	0.00 KB (0.00%)
schema-toArbitrary.ts	21.52 KB	21.52 KB	0.00 KB (0.00%)
schema-toCodeDocument.ts	24.00 KB	24.00 KB	0.00 KB (0.00%)
schema-toCodecJson.ts	18.74 KB	18.74 KB	0.00 KB (0.00%)
schema-toEquivalence.ts	18.57 KB	18.57 KB	0.00 KB (0.00%)
schema-toFormatter.ts	18.43 KB	18.43 KB	0.00 KB (0.00%)
schema-toJsonSchemaDocument.ts	22.59 KB	22.59 KB	0.00 KB (0.00%)
schema-toRepresentation.ts	19.08 KB	19.08 KB	0.00 KB (0.00%)
schema.ts	18.73 KB	18.73 KB	0.00 KB (0.00%)
stm.ts	12.59 KB	12.59 KB	0.00 KB (0.00%)
stream.ts	9.67 KB	9.67 KB	0.00 KB (0.00%)

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Run failed. View the logs →

  ^{｜ ⚠️ this action is pinned to a commit SHA, which freezes the cleanup step — switch to @v0 or keep the SHA fresh with Dependabot ｜ Rerun failed job ➔ ｜ View workflow run ｜ via Pullfrog ｜ Using DeepSeek Flash (free via Pullfrog for OSS) ｜ 𝕏}