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v4.12.31

domcyrus/rustnetv4.12.31Jul 18, 2026by yusukebe

AI Summary

This update improves request handling performance by caching formData and fixes multipart boundary issues in request cloning. It also adds benchmarks for app overhead.

Key Highlights

  • Fixed multipart boundary mismatch in `cloneRawRequest`
  • Fixed SSE to emit retry field when retry is `0`
  • Reused cached formData in `parseBody()` for better performance
  • Added `app.fetch()` overhead benchmark

New Features

  • Fixed multipart boundary mismatch in `cloneRawRequest`
  • Added `app.fetch()` overhead benchmark

Full Release Notes

## What's Changed
* test(context): assert case-insensitive header names in response helpers by @yusukebe in https://github.com/honojs/hono/pull/5116
* chore(benchmark): add app.fetch() overhead benchmark by @yusukebe in https://github.com/honojs/hono/pull/5117
* refactor(aws-lambada): remove FIXME in `@ts-expect-error` by @yusukebe in https://github.com/honojs/hono/pull/5130
* fix(utils/body): reuse cached formData in `parseBody()` by @yusukebe in https://github.com/honojs/hono/pull/5131
* fix(request): fix multipart boundary mismatch in `cloneRawRequest` by @yusukebe in https://github.com/honojs/hono/pull/5133
* fix(sse): emit retry feild when retry is `0` by @yusukebe in https://github.com/honojs/hono/pull/5135
* test(validator): fix misspelled identifier in transform type test by @yusukebe in https://github.com/honojs/hono/pull/5136

**Full Changelog**: https://github.com/honojs/hono/compare/v4.12.30...v4.12.31