### What does this PR do?
Doubles the hardcoded max http header count
### How did you verify your code works?
ci (?)
---------
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pulled out of https://github.com/oven-sh/bun/pull/21809
- brings the ASAN behavior on linux closer in sync with macos
- fixes some tests to also pass in node
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## Summary
Fixes 100% CPU usage on idle WebSocket servers between bun-v1.2.23 and
bun-v1.3.0.
Many users reported WebSocket server CPU usage jumping to 100% on idle
connections after upgrading to v1.3.0. Investigation revealed a missing
`poll_ref.unref()` call in the WebSocket upgrade path.
## Root Cause
In commit 625e537f5d (#23348), the `OnBeforeOpen` callback mechanism was
removed as part of refactoring the WebSocket upgrade process. However,
this callback contained a critical cleanup step:
```zig
defer ctx.this.poll_ref.unref(ctx.globalObject.bunVM());
```
When a `NodeHTTPResponse` is created, `poll_ref.ref()` is called (line
314) to keep the event loop alive while handling the HTTP request. After
a WebSocket upgrade, the HTTP response object is no longer relevant and
its `poll_ref` must be unref'd to indicate the request processing is
complete.
Without this unref, the event loop maintains an active reference even
after the upgrade completes, causing the CPU to spin at 100% waiting for
events on what should be an idle connection.
## Changes
- Added `poll_ref.unref()` call in `NodeHTTPResponse.upgrade()` after
setting the `upgraded` flag
- Added regression test to verify event loop properly exits after
WebSocket upgrade
## Test Plan
- [x] Code compiles successfully
- [x] Existing WebSocket tests pass
- [x] Manual testing confirms CPU usage returns to normal on idle
WebSocket connections
## Related Issues
Fixes issue reported by users between bun-v1.2.23 and bun-v1.3.0
regarding 100% CPU usage on idle WebSocket servers.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
---------
Co-authored-by: Claude Bot <claude-bot@bun.sh>
Co-authored-by: Claude <noreply@anthropic.com>
Co-authored-by: Jarred Sumner <jarred@jarredsumner.com>
Co-authored-by: autofix-ci[bot] <114827586+autofix-ci[bot]@users.noreply.github.com>
### What does this PR do?
Calls `uncork()` after flushing response headers to ensure data is sent
as soon as possible, improving responsiveness.
This behavior still works correctly even without the explicit `uncork()`
call, due to the deferred uncork logic implemented here:
6e3359dd16/packages/bun-uws/src/Loop.h (L57-L64)
A test already covers this scenario in
`test/js/node/test/parallel/test-http-flush-response-headers.js`.
### How did you verify your code works?
CI
---------
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### What does this PR do?
fix tests failing because of example.com
### How did you verify your code works?
CI
---------
Co-authored-by: autofix-ci[bot] <114827586+autofix-ci[bot]@users.noreply.github.com>
### What does this PR do?
handle socket upgrade in NodeHTTP.cpp
### How did you verify your code works?
Run the test added with asan it should catch the bug
---------
Co-authored-by: autofix-ci[bot] <114827586+autofix-ci[bot]@users.noreply.github.com>
### What does this PR do?
Fix request body streaming in node-fetch wrapper.
### How did you verify your code works?
Added a test that previously failed
---------
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