hyperium / hyperium/http

HeaderMap: Store "link" indices as u16

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Dominant language
Rust
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Merged PRs (30d)
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Description

Indices into the vectors in HeaderMap are guaranteed to fit within u16 (see #386), but the header::map::{Link, Links} types store them as usize.

Changing these fields from usize to u16 would reduce memory footprint and might improve cache-friendliness of HeaderMap.

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  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Locate the HeaderMap implementation and the header::map::{Link, Links} types mentioned in the issue, then inspect how their indices are stored and used. Check the constraints established by #386 and existing tests or benchmarks for HeaderMap; done means the indices use u16 consistently without breaking behavior or bounds assumptions.

Written by the indexing model from the issue text.

Assessment

Tech stack
rust
Domain
backend-api-design
Issue type
Refactor
Difficulty
3/5
Estimated time
1-2 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
48/100

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