robobun 9d6ef0af1d fix(fetch): preserve header case when sending HTTP requests (#26425) ...

## Summary
- Fixes #26422
- Preserve HTTP header case when sending requests (e.g., `Content-Type`
instead of `content-type`)
- HTTP headers are technically case-insensitive per RFC 7230, but many
APIs expect specific casing

## Test plan
- [x] Added tests that verify headers are sent with proper case on the
wire
- [x] Tests use raw TCP sockets to capture actual HTTP wire format
- [x] Tests fail with system Bun (lowercase headers), pass with fixed
build

🤖 Generated with [Claude Code](https://claude.ai/claude-code)

Co-authored-by: Claude Bot <claude-bot@bun.sh>
Co-authored-by: Claude Opus 4.5 <noreply@anthropic.com>

2026-01-26 11:15:33 -08:00

..

fixtures

fix(FormData, Bun.file()) FormData can append file slices, Bun.file(..).slice(..).text() works as expected (#13580)

2024-08-30 00:53:40 -07:00

resources

Better test coverage for Request and Response

2023-03-13 17:13:24 -07:00

abort-signal-leak.test.ts

run prettier and add back format action (#13722)

2024-09-03 21:32:52 -07:00

abortsignal-leak-fixture.ts

Call cancel on ReadableStream when Bun.serve() response is aborted (#13687)

2024-09-02 09:40:03 -07:00

blob-cow.test.ts

run prettier and add back format action (#13722)

2024-09-03 21:32:52 -07:00

blob-oom.test.ts

run prettier and add back format action (#13722)

2024-09-03 21:32:52 -07:00

blob-write.test.ts

Upgrade WebKit 2025/12/07 (#25429)

2025-12-23 22:24:18 -08:00

blob.test.ts

Add flag to disable sql auto pipelining (#21067)

2025-07-15 01:13:35 -07:00

body-clone.test.ts

Use ReadableStream.prototype.* in tests instead of new Response(...).* (#20937)

2025-07-14 00:47:53 -07:00

body-mixin-errors.test.ts

fix: body already used error to throw TypeError (#24114)

2025-10-27 18:31:33 -07:00

body-stream-excess.test.ts

run prettier and add back format action (#13722)

2024-09-03 21:32:52 -07:00

body-stream.test.ts

fix(server) Fix empty stream response (#18707)

2025-04-01 19:08:04 -07:00

body.test.ts

Use ReadableStream.prototype.* in tests instead of new Response(...).* (#20937)

2025-07-14 00:47:53 -07:00

chunked-trailing.test.js

fix(fetch) ignore trailers and add trailer tests (#19854)

2025-05-22 20:17:21 -07:00

client-fetch.test.ts

Rewrite test/describe, add test.concurrent (#22534)

2025-09-20 00:35:42 -07:00

content-length.test.js

node:http improvements (#17093)

2025-03-10 20:19:29 -07:00

cookies.test.ts

run prettier and add back format action (#13722)

2024-09-03 21:32:52 -07:00

encoding.test.ts

run prettier and add back format action (#13722)

2024-09-03 21:32:52 -07:00

exiting.test.ts

run prettier and add back format action (#13722)

2024-09-03 21:32:52 -07:00

fetch_headers.test.js

Fix Headers.append() assertion with numeric string property names (#23782)

2025-10-17 16:25:54 -04:00

fetch-args.test.ts

run prettier and add back format action (#13722)

2024-09-03 21:32:52 -07:00

fetch-connection-header.test.ts

fix: respect user-provided Connection header in fetch() requests (#21049)

2025-07-14 20:53:46 -07:00

fetch-cyclic-reference.test.ts

fix(fetch): fix ReadableStream memory leak when using stream body (#25846)

2026-01-06 15:00:52 +00:00

fetch-gzip.test.ts

Fix formatters not running in CI + delete unnecessary files (#19433)

2025-05-08 23:22:16 -07:00

fetch-keepalive.test.ts

Fix formatters not running in CI + delete unnecessary files (#19433)

2025-05-08 23:22:16 -07:00

fetch-leak-test-fixture-2.js

Downgrade mimalloc + set libc musl flag (#21684)

2025-08-08 18:02:19 -07:00

fetch-leak-test-fixture-3.js

Deflake fetch tests (#16000)

2024-12-27 14:07:41 -08:00

fetch-leak-test-fixture-4.js

Deflake fetch tests (#16000)

2024-12-27 14:07:41 -08:00

fetch-leak-test-fixture-5.js

Implement isolated event loop for spawnSync (#24436)

2025-11-07 05:28:33 -08:00

fetch-leak-test-fixture-6.js

fix(fetch) Reduce memory usage (#23697)

2025-10-15 14:34:59 -07:00

fetch-leak-test-fixture.js

Make readFile() async (#3850)

2023-07-27 16:55:49 -07:00

fetch-leak.test.ts

Implement isolated event loop for spawnSync (#24436)

2025-11-07 05:28:33 -08:00

fetch-preconnect.test.ts

Fix fetch-preconnect test failure (#23016)

2025-09-26 19:01:01 -07:00

fetch-redirect.test.ts

run prettier and add back format action (#13722)

2024-09-03 21:32:52 -07:00

fetch-reject-authorized-env-fixture.js

fix(fetch) (#6672)

2023-10-30 12:56:31 -07:00

fetch-tcp-stress.test.ts

fetch-tcp-stress.test.ts: todo failing on macos ci (#14514)

2024-10-14 12:48:42 -07:00

fetch-tls-abortsignal-timeout.test.ts

Start using test.concurrent in our tests (#22823)

2025-09-22 05:30:34 -07:00

fetch-url-after-redirect.test.ts

run prettier and add back format action (#13722)

2024-09-03 21:32:52 -07:00

fetch.brotli.test.ts

fix \uFFFF printing regression (#15330)

2024-11-21 22:01:27 -08:00

fetch.brotli.test.ts.br

fix \uFFFF printing regression (#15330)

2024-11-21 22:01:27 -08:00

fetch.brotli.test.ts.gzip

fix \uFFFF printing regression (#15330)

2024-11-21 22:01:27 -08:00

fetch.js.txt

Reorganize tests (#2332)

2023-03-07 12:22:34 -08:00

fetch.stream.test.ts

Mark flaky test as TODO

2025-10-26 14:29:31 -07:00

fetch.test.ts

fix: Response.json() throws TypeError for non-JSON serializable top-level values (#21258)

2025-10-20 19:46:22 -07:00

fetch.tls.extra-cert.fixture.js

implement NODE_EXTRA_CA_CERTS (#13150)

2024-08-07 13:21:52 -07:00

fetch.tls.test.ts

Start using test.concurrent in our tests (#22823)

2025-09-22 05:30:34 -07:00

fetch.tls.wildcard.test.ts

Harden TLS hostname verification (#25727)

2026-01-05 10:21:49 -08:00

fetch.unix.test.ts

get node:fs tests passing part 1 (#16270)

2025-01-14 20:53:02 -08:00

fetch.upgrade.test.ts

fix(fetch) handle 101 (#22390)

2025-09-04 18:06:47 -07:00

file with space in the name.txt

Support file: URLs in fetch (#3858)

2023-07-28 15:44:05 -07:00

fixture.html

Reorganize tests (#2332)

2023-03-07 12:22:34 -08:00

fixture.html.gz

Reorganize tests (#2332)

2023-03-07 12:22:34 -08:00

fixture.png

fetch(stream) add stream support for compressed and uncompressed data (#4127)

2023-08-21 20:30:34 -07:00

fixture.png.gz

fetch(stream) add stream support for compressed and uncompressed data (#4127)

2023-08-21 20:30:34 -07:00

headers-case.test.ts

fix(fetch): preserve header case when sending HTTP requests (#26425)

2026-01-26 11:15:33 -08:00

headers.test.ts

run prettier and add back format action (#13722)

2024-09-03 21:32:52 -07:00

headers.undici.test.ts

run prettier and add back format action (#13722)

2024-09-03 21:32:52 -07:00

http-chunked-server.c

fix streaming issue (#23289)

2025-10-06 05:39:22 -07:00

request-cyclic-reference.test.ts

Deflake test/js/web/fetch/request-cyclic-reference.test.ts test/js/web/fetch/response-cyclic-reference.test.ts

2025-10-08 00:31:52 -07:00

response-cyclic-reference.test.ts

Deflake test/js/web/fetch/request-cyclic-reference.test.ts test/js/web/fetch/response-cyclic-reference.test.ts

2025-10-08 00:31:52 -07:00

response.test.ts

fix: Response.clone() no longer locks body when body was accessed before clone (#25484)

2025-12-15 18:46:02 -08:00

server-response-stream-leak.test.ts

fix(http): fix Strong reference leak in server response streaming (#25965)

2026-01-12 14:41:58 -08:00

stream-fast-path.test.ts

Use ReadableStream.prototype.* in tests instead of new Response(...).* (#20937)

2025-07-14 00:47:53 -07:00

utf8-bom.test.ts

fix: scanner on update, install, remove, uninstall and add, and introduce the pm scan command (#22193)

2025-09-09 21:42:01 -07:00

wasm-streaming.test.ts

Support WebAssembly.{instantiate,compile}Streaming() (#20503)

2025-07-28 11:59:45 -07:00

websocket.helpers.ts

fix(fetch) handle 101 (#22390)

2025-09-04 18:06:47 -07:00