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node:tls: keep unread data and still emit 'close' when a wrapped transport closes - #42176
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Jarred-Sumner merged 10 commits intoSep 22, 2026
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…socket A TLS socket over a generic Duplex runs a BoringSSL engine over the stream. Destroying that stream left the TLS socket open: the engine is created on a later event-loop turn, so a close that arrives first found no SSL to shut down and was dropped, and a close that arrived later surfaced the aborted handshake as ECONNRESET with no 'close' event. net.ts now destroys the TLS socket from the transport's 'close', like node's stream wrap does, and UpgradedDuplex stages a close that arrives before the engine so the queued StartTLS task reports it instead of starting an engine for a transport that is already gone.
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Updated 12:35 PM PT - Sep 15th, 2026
✅ @robobun, your commit fb8af7521995c1820970784132a5daf8bddec585 passed in 🧪 To try this PR locally: bunx bun-pr 42176That installs a local version of the PR into your bun-42176 --bun |
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StatusRebased onto main at 81f97bb. #39066 landed the transport
Tests: |
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Included review availability: Your plan provides up to 10 included reviews per hour; 4 remain after this review. WalkthroughChangesTLS-over-duplex close handling now records transport closure before TLS startup, orders teardown before event forwarding for client and server upgrades, and adds regression tests for teardown, buffered payload delivery, and native TLS socket cleanup. TLS duplex close handling
Suggested reviewers: Priority: ⬇️ Low Merge Risk: ⚪ Minimal · up to No concrete merge-blocking risk remains after the covered TLS teardown changes and tests. 🚥 Pre-merge checks | ✅ 4✅ Passed checks (4 passed)
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In `@test/js/node/tls/node-tls-server.test.ts`:
- Line 2085: Update the teardown assertion around the existing await teardown
expectation to assert the complete expected sequence, including close:false,
rather than only excluding error:ECONNRESET. Match the array-based assertion
used by the other teardown cases.
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src/js/node/net.tssrc/runtime/socket/UpgradedDuplex.rssrc/runtime/socket/socket_body.rstest/js/node/tls/node-tls-connect.test.tstest/js/node/tls/node-tls-server.test.ts
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…whole sequence The pending-handshake case only excluded ECONNRESET. Assert the exact close sequence like the other cases do. node-tls-connect.test.ts already owns the TLS-over-Duplex cases, both client and server wraps, so the server cases move there too.
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Thanks, applied: the pending-handshake case now asserts The three server cases also moved into |
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Trimmed the three comments the comment check flagged. What is left is the part a reader cannot recover from the code: the listener order the teardown depends on, and the window in which the engine does not exist yet. Tests still pass ( |
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…an EOF The engine reads the transport with no backpressure, so a peer that ends cleanly leaves the whole payload decrypted inside the TLS socket while the transport is already closing. Destroying the socket from that close dropped whatever a non-flowing consumer had not read yet: a paused reader got nothing of a 1 MB body, and pipeline() and for-await lost part of it. Skip the destroy once the engine has delivered EOF. The stream finishes on its own then. Every window in #41851 still destroys, because the listener runs ahead of the engine's close thunk and the EOF has not been delivered in any of them.
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A transport that ends before it closes loses node's
Same with The cause is the order. Two changes restore it, both measured against node v26.3.0:
With both, every row of the FIN and the destroy matrix matches node in the window before the engine exists, and the four tests on this branch still pass. #42235 is stacked on this branch for the transport's |
robobun
changed the title
The 'end' listener reuses the bound close handler, so a socket that was re-dialed over another connection in between is left alone.
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Two findings from the #39066 regression work, checked against 72670be (debug+ASAN build, linux x64). 1. A duplex that ends in the same tick as the wrap still gets
if ((self[kended] || self[kOnreadPendingEnd] || connection.readableEnded) && !self.readableEnded)With that line this branch prints A test for it: it("a duplex that ends in the same tick still aborts the handshake with an error", async () => {
const duplex = new Duplex({
read() {},
write(_chunk, _encoding, callback) {
callback();
},
});
const client = tls.connect({ socket: duplex, rejectUnauthorized: false });
const events: string[] = [];
const closed = Promise.withResolvers<string[]>();
client.on("end", () => events.push("end"));
client.on("error", (err: NodeJS.ErrnoException) => events.push(`error:${err.code}`));
client.on("close", hadError => {
events.push(`close:${hadError}`);
closed.resolve(events);
});
duplex.push(null);
duplex.end();
expect(await closed.promise).toEqual(["end", "error:ECONNRESET", "close:true"]);
});2. The server-side fd wrap that loses ECONNRESET and It is the fd upgrade, not the stream engine, and it is in #42293. That PR adds a listener for the three fd upgrade sites and does not touch |
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A note on how this PR and #42332 meet. #42332 implements read backpressure for the stream engine (the
|
This was referenced Sep 11, 2026
Jarred-Sumner
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that referenced
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Sep 14, 2026
### Problem
- A server-side wrap of an accepted socket (`new tls.TLSSocket(raw, {
isServer: true })`, `tlsServer.emit('connection', raw)`) no longer
reports a peer RST. The TLS socket emits `'close'` with `hadError ===
false` and no `'error'`. During the handshake the `tls.Server` gets no
`'tlsClientError'`. Bun 1.4.2 and Node report ECONNRESET.
- Regression from #39066: the wrapped socket's `'close'` now destroys
the TLS socket (`onUpgradedClose`, `src/js/node/net.ts:273`). The native
`on_close` (`src/runtime/socket/socket_body.rs:2122`) runs the raw
socket's close callback, drains the tick queue (raw `'close'`, so the
destroy), and only then runs the TLS socket's own close callback with
ECONNRESET.
### Fix
- `on_close` holds the event loop entered (`EventLoop::enter_scope`)
across both close callbacks of an `upgradeTLS` pair. The tick queue
drains after both ran, not between them.
- The TLS socket's own close callback now destroys it with ECONNRESET
before the raw socket's `'close'` event runs. That listener then finds
the socket destroyed. `net.ts` does not change.
- The JS events keep the 1.4.2 order: `raw error, raw close, tls error,
tls close`.
- Verified:
`test/js/node/tls/node-tls-socket-allow-half-open-option.test.ts`, 2 new
tests, both fail on main's `src/`. Also `test/js/node/tls/`, `net/`,
`http2/`, `test/js/bun/net/`, vendored `test-tls-*` and `test-https-*`.
### Background
- A wrap is TLS over an existing socket. For a connected `net.Socket`
Bun adopts the fd: `upgradeTLS` returns a raw handle, which stays on the
wrapped socket, and a TLS handle for the TLS socket.
- Only the TLS handle gets native events. Its `on_close` first calls the
raw handle's close callback (the "twin") as a full dispatch of its own.
- Each dispatch brackets its JS callback with `enter()` and `exit()` on
the event loop. The outermost `exit()` drains `process.nextTick` and
microtasks. The twin's dispatch was an outermost pair, so it drained
before the TLS callback ran.
<details><summary>Notes</summary>
#### Scope
The raw socket needs an `'error'` listener of its own for this to show,
the usual STARTTLS server shape. Without one it is not destroyed on the
reset, so it emits no `'close'`.
`CloseTeardown` is now created ahead of the scope, so it drops after it.
The drain still comes ahead of the teardown (`mark_inactive`, the final
`deref`), as it does for a socket with no twin. The three early returns
lose their explicit `drop(cleanup)` for the same reason: the natural
drop order is the scope first, then the teardown.
The change applies to every `upgradeTLS` pair, also the ones from
`Bun.connect` and `socket.upgradeTLS()`. What moves is when the ticks
queued by the raw socket's `close` handler run: after the TLS socket's
`close` handler, not before it.
An earlier revision of this PR deferred the destroy in `net.ts` with a
`setImmediate` when it saw the state between the two callbacks. Review
asked to fix the ordering at its source, which is this version.
Since #39066 a wrap takes `allowHalfOpen` from the wrapped socket. A
half-open wrap does not end itself after EOF, so the wrapped socket's
`'close'` must destroy it. This change keeps that.
#### Measurements
Linux x64. "main" is a debug+ASAN build of 81f97bb. "before" is bun
1.4.3-canary.1+4ff919377, which predates #39066 and prints what 1.4.2
prints. Node is v26.3.0. The server wraps the accepted socket and also
listens for `'error'` on it. The client does `resetAndDestroy()`.
| case | node | before | main | this PR |
| --- | --- | --- | --- | --- |
| `new TLSSocket(raw)`, after the handshake | tls error ECONNRESET, raw
close, tls close:true | raw error, raw close, tls error ECONNRESET, tls
close:true | raw error, raw close, tls close:false | same as before |
| `tlsServer.emit('connection', raw)`, after the handshake | same | same
| same | same as before |
| `new TLSSocket(raw)`, during the handshake | tls error ECONNRESET, raw
close, tls close:true | raw error, raw close, tls error ECONNRESET, tls
close:true | raw error, raw close, tls close:false | same as before |
| `tlsServer.emit('connection', raw)`, during the handshake |
tlsClientError ECONNRESET | tlsClientError ECONNRESET | nothing |
tlsClientError ECONNRESET |
`tls.connect({ socket })` over a `net.Socket` it dialed itself was not
affected. Its raw socket keeps its handle through the close callback, so
`_destroy` takes the `kAdoptedTLSRaw` branch and `'close'` comes two
check phases later (`closeAdoptedTLSRawNT`). An accepted socket's
callback (`ServerHandlers.close`) detaches the handle first, so
`'close'` comes from `process.nextTick`.
#### The trace
`BUN_DEBUG_Socket=1 BUN_DEBUG_JS=1` on main, after the client's RST:
```
[socket] onClose C <- TLS handle
[socket] onClose S <- raw handle, dispatched from inside the first
[net] Bun.Server close <- raw socket's callback: destroy(ECONNRESET)
[events] Socket.emit error
[events] Socket.emit close <- onUpgradedClose: tlsSocket.destroy()
[net] Socket.prototype._destroy
[net] Bun.Server close <- TLS socket's callback, socket already destroyed
```
#### Relation to #42176
#42176 now carries the other face of the #39066 regression: a TLS socket
over a `stream.Duplex` that loses unread data when the duplex closes.
That is the stream-engine path and it changes `onUpgradedClose`. This PR
touches neither that function nor `net.ts`, so the two do not conflict.
</details>
<!-- robobun:evidence:begin -->
---
**[human-review]** gate passed · iteration 0 · 2 files touched
<details><summary>fails on main (without fix)</summary>
```console
ASAN without fix: 2 FAILED
$ BUN_DEBUG_QUIET_LOGS=1 bun scripts/build.ts --profile=debug --quiet test "--reporter=junit" "--reporter-outfile=/tmp/pr_gate.xml" test/js/node/tls/node-tls-socket-allow-half-open-option.test.ts
bun test v1.4.3 (4ff9193)
test/js/node/tls/node-tls-socket-allow-half-open-option.test.ts:
(pass) TLSSocket allowHalfOpen > new TLSSocket(socket) takes the wrapped socket's allowHalfOpen, ignoring the option [228.65ms]
(pass) TLSSocket allowHalfOpen > without a socket to wrap, the option is honored [10.30ms]
(pass) TLSSocket allowHalfOpen > tls.connect({ socket }) takes the given socket's allowHalfOpen, ignoring the option [207.34ms]
(pass) TLSSocket allowHalfOpen > over a connection > a server-side wrap of a half-open socket stays writable after the peer ends [946.31ms]
(pass) TLSSocket allowHalfOpen > over a connection > a server-side wrap of a regular socket ends itself after the peer ends, even with allowHalfOpen: true [836.51ms]
(pass) TLSSocket allowHalfOpen > over a connection > a socket injected into a tls.Server keeps its own allowHalfOpen [845.82ms]
(pass) TLSSocket allowHalfOpen > over a connection > tls.connect({ socket }) over a half-open socket stays writab
... (truncated)
release without fix: all passed
bun test v1.4.3-canary.1 (00fab6991)
test/js/node/tls/node-tls-socket-allow-half-open-option.test.ts:
(pass) TLSSocket allowHalfOpen > new TLSSocket(socket) takes the wrapped socket's allowHalfOpen, ignoring the option [8.83ms]
(pass) TLSSocket allowHalfOpen > without a socket to wrap, the option is honored [0.16ms]
(pass) TLSSocket allowHalfOpen > tls.connect({ socket }) takes the given socket's allowHalfOpen, ignoring the option [4.39ms]
(pass) TLSSocket allowHalfOpen > a peer reset under a server-side wrap > a socket injected into a tls.Server: a reset during the handshake is a 'tlsClientError' [20.27ms]
(pass) TLSSocket allowHalfOpen > the wrapped socket closing > new TLSSocket(duplex, { isServer }): the duplex closing [36.67ms]
(pass) TLSSocket allowHalfOpen > over a connection > a server-side wrap of a half-open socket stays writable after the peer ends [48.42ms]
(pass) TLSSocket allowHalfOpen > over a connection > a server-side wrap of a regular socket ends itself after the peer ends, even with allowHalfOpen: true [44.45ms]
(pass) TLSSocket allowHalfOpen > over a connection > a socket injected into a tls.Server keeps its own allowHalfOpen [44.65ms]
(pass) TL
... (truncated)
```
</details>
<details><summary>passes on PR (with fix)</summary>
```console
ASAN with fix: all passed
$ BUN_DEBUG_QUIET_LOGS=1 bun scripts/build.ts --profile=debug --quiet test "--reporter=junit" "--reporter-outfile=/tmp/pr_gate.xml" test/js/node/tls/node-tls-socket-allow-half-open-option.test.ts
bun test v1.4.3 (4ff9193)
test/js/node/tls/node-tls-socket-allow-half-open-option.test.ts:
(pass) TLSSocket allowHalfOpen > new TLSSocket(socket) takes the wrapped socket's allowHalfOpen, ignoring the option [215.09ms]
(pass) TLSSocket allowHalfOpen > without a socket to wrap, the option is honored [9.47ms]
(pass) TLSSocket allowHalfOpen > tls.connect({ socket }) takes the given socket's allowHalfOpen, ignoring the option [206.47ms]
(pass) TLSSocket allowHalfOpen > over a connection > a server-side wrap of a half-open socket stays writable after the peer ends [953.62ms]
(pass) TLSSocket allowHalfOpen > over a connection > a server-side wrap of a regular socket ends itself after the peer ends, even with allowHalfOpen: true [840.71ms]
(pass) TLSSocket allowHalfOpen > over a connection > a socket injected into a tls.Server keeps its own allowHalfOpen [839.34ms]
(pass) TLSSocket allowHalfOpen > over a connection > tls.connect({ socket }) over a half-open socket stays writabl
... (truncated)
release with fix: all passed
$ bun scripts/build.ts --profile=release
[configured] bun-profile → bun (stripped) in 692ms (unchanged)
ninja: Entering directory `/workspace/bun/build/release'
[1/6] gen generated_host_exports.rs
generated_host_exports.rs: 122 exports (host=5, lazy=10, generic=107, rust=0); 243 extern-C blocks audited
[1/6] cargo bun_runtime → libbun_runtime.a
�[1m�[92m Compiling�[0m bun_core v0.0.0 (/workspace/bun/src/bun_core)
�[1m�[92m Compiling�[0m bun_errno v0.0.0 (/workspace/bun/src/errno)
�[1m�[92m Compiling�[0m bun_ptr v0.0.0 (/workspace/bun/src/ptr)
�[1m�[92m Compiling�[0m bun_boringssl_sys v0.0.0 (/workspace/bun/src/boringssl_sys)
�[1m�[92m Compiling�[0m bun_safety v0.0.0 (/workspace/bun/src/safety)
�[1m�[92m Compiling�[0m bun_base64 v0.0.0 (/workspace/bun/src/base64)
�[1m�[92m Compiling�[0m bun_cares_sys v0.0.0 (/workspace/bun/src/cares_sys)
�[1m�[92m Compiling�[0m bun_zlib_sys v0.0.0 (/workspace/bun/src/zlib_sys)
�[1m�[92m Compiling�[0m bun_zstd v0.0.0 (/workspace/bun/src/zstd)
�[1m�[92m Compiling�[0m bun_picohttp v0.0.0 (/workspace/bun/src/picohttp)
�[1m�[92m Compiling�[0m bun_paths v0.0.0 (/workspace/bun/src/paths)
�[1m�[92m Compiling�[0m b
... (truncated)
```
</details>
<details><summary>diff hotspot</summary>
```
src/runtime/socket/socket_body.rs | 21 +++---
.../node-tls-socket-allow-half-open-option.test.ts | 77 ++++++++++++++++++++++
2 files changed, 89 insertions(+), 9 deletions(-)
```
</details>
**gate history** · 2 passed · 0 rejected · iteration 0
<details><summary>evidence per changed file</summary>
```
file reads edits tests
src/runtime/socket/socket_body.rs 4 1 23
…node/tls/node-tls-socket-allow-half-open-option.test.ts 4 4 23
```
</details>
<!-- robobun:evidence:end -->
usrbinkat
pushed a commit
to usrbinkat/bun
that referenced
this pull request
Sep 15, 2026
…h#42293) ### Problem - A server-side wrap of an accepted socket (`new tls.TLSSocket(raw, { isServer: true })`, `tlsServer.emit('connection', raw)`) no longer reports a peer RST. The TLS socket emits `'close'` with `hadError === false` and no `'error'`. During the handshake the `tls.Server` gets no `'tlsClientError'`. Bun 1.4.2 and Node report ECONNRESET. - Regression from oven-sh#39066: the wrapped socket's `'close'` now destroys the TLS socket (`onUpgradedClose`, `src/js/node/net.ts:273`). The native `on_close` (`src/runtime/socket/socket_body.rs:2122`) runs the raw socket's close callback, drains the tick queue (raw `'close'`, so the destroy), and only then runs the TLS socket's own close callback with ECONNRESET. ### Fix - `on_close` holds the event loop entered (`EventLoop::enter_scope`) across both close callbacks of an `upgradeTLS` pair. The tick queue drains after both ran, not between them. - The TLS socket's own close callback now destroys it with ECONNRESET before the raw socket's `'close'` event runs. That listener then finds the socket destroyed. `net.ts` does not change. - The JS events keep the 1.4.2 order: `raw error, raw close, tls error, tls close`. - Verified: `test/js/node/tls/node-tls-socket-allow-half-open-option.test.ts`, 2 new tests, both fail on main's `src/`. Also `test/js/node/tls/`, `net/`, `http2/`, `test/js/bun/net/`, vendored `test-tls-*` and `test-https-*`. ### Background - A wrap is TLS over an existing socket. For a connected `net.Socket` Bun adopts the fd: `upgradeTLS` returns a raw handle, which stays on the wrapped socket, and a TLS handle for the TLS socket. - Only the TLS handle gets native events. Its `on_close` first calls the raw handle's close callback (the "twin") as a full dispatch of its own. - Each dispatch brackets its JS callback with `enter()` and `exit()` on the event loop. The outermost `exit()` drains `process.nextTick` and microtasks. The twin's dispatch was an outermost pair, so it drained before the TLS callback ran. <details><summary>Notes</summary> #### Scope The raw socket needs an `'error'` listener of its own for this to show, the usual STARTTLS server shape. Without one it is not destroyed on the reset, so it emits no `'close'`. `CloseTeardown` is now created ahead of the scope, so it drops after it. The drain still comes ahead of the teardown (`mark_inactive`, the final `deref`), as it does for a socket with no twin. The three early returns lose their explicit `drop(cleanup)` for the same reason: the natural drop order is the scope first, then the teardown. The change applies to every `upgradeTLS` pair, also the ones from `Bun.connect` and `socket.upgradeTLS()`. What moves is when the ticks queued by the raw socket's `close` handler run: after the TLS socket's `close` handler, not before it. An earlier revision of this PR deferred the destroy in `net.ts` with a `setImmediate` when it saw the state between the two callbacks. Review asked to fix the ordering at its source, which is this version. Since oven-sh#39066 a wrap takes `allowHalfOpen` from the wrapped socket. A half-open wrap does not end itself after EOF, so the wrapped socket's `'close'` must destroy it. This change keeps that. #### Measurements Linux x64. "main" is a debug+ASAN build of 81f97bb. "before" is bun 1.4.3-canary.1+4ff919377, which predates oven-sh#39066 and prints what 1.4.2 prints. Node is v26.3.0. The server wraps the accepted socket and also listens for `'error'` on it. The client does `resetAndDestroy()`. | case | node | before | main | this PR | | --- | --- | --- | --- | --- | | `new TLSSocket(raw)`, after the handshake | tls error ECONNRESET, raw close, tls close:true | raw error, raw close, tls error ECONNRESET, tls close:true | raw error, raw close, tls close:false | same as before | | `tlsServer.emit('connection', raw)`, after the handshake | same | same | same | same as before | | `new TLSSocket(raw)`, during the handshake | tls error ECONNRESET, raw close, tls close:true | raw error, raw close, tls error ECONNRESET, tls close:true | raw error, raw close, tls close:false | same as before | | `tlsServer.emit('connection', raw)`, during the handshake | tlsClientError ECONNRESET | tlsClientError ECONNRESET | nothing | tlsClientError ECONNRESET | `tls.connect({ socket })` over a `net.Socket` it dialed itself was not affected. Its raw socket keeps its handle through the close callback, so `_destroy` takes the `kAdoptedTLSRaw` branch and `'close'` comes two check phases later (`closeAdoptedTLSRawNT`). An accepted socket's callback (`ServerHandlers.close`) detaches the handle first, so `'close'` comes from `process.nextTick`. #### The trace `BUN_DEBUG_Socket=1 BUN_DEBUG_JS=1` on main, after the client's RST: ``` [socket] onClose C <- TLS handle [socket] onClose S <- raw handle, dispatched from inside the first [net] Bun.Server close <- raw socket's callback: destroy(ECONNRESET) [events] Socket.emit error [events] Socket.emit close <- onUpgradedClose: tlsSocket.destroy() [net] Socket.prototype._destroy [net] Bun.Server close <- TLS socket's callback, socket already destroyed ``` #### Relation to oven-sh#42176 oven-sh#42176 now carries the other face of the oven-sh#39066 regression: a TLS socket over a `stream.Duplex` that loses unread data when the duplex closes. That is the stream-engine path and it changes `onUpgradedClose`. This PR touches neither that function nor `net.ts`, so the two do not conflict. </details> <!-- robobun:evidence:begin --> --- **[human-review]** gate passed · iteration 0 · 2 files touched <details><summary>fails on main (without fix)</summary> ```console ASAN without fix: 2 FAILED $ BUN_DEBUG_QUIET_LOGS=1 bun scripts/build.ts --profile=debug --quiet test "--reporter=junit" "--reporter-outfile=/tmp/pr_gate.xml" test/js/node/tls/node-tls-socket-allow-half-open-option.test.ts bun test v1.4.3 (4ff9193) test/js/node/tls/node-tls-socket-allow-half-open-option.test.ts: (pass) TLSSocket allowHalfOpen > new TLSSocket(socket) takes the wrapped socket's allowHalfOpen, ignoring the option [228.65ms] (pass) TLSSocket allowHalfOpen > without a socket to wrap, the option is honored [10.30ms] (pass) TLSSocket allowHalfOpen > tls.connect({ socket }) takes the given socket's allowHalfOpen, ignoring the option [207.34ms] (pass) TLSSocket allowHalfOpen > over a connection > a server-side wrap of a half-open socket stays writable after the peer ends [946.31ms] (pass) TLSSocket allowHalfOpen > over a connection > a server-side wrap of a regular socket ends itself after the peer ends, even with allowHalfOpen: true [836.51ms] (pass) TLSSocket allowHalfOpen > over a connection > a socket injected into a tls.Server keeps its own allowHalfOpen [845.82ms] (pass) TLSSocket allowHalfOpen > over a connection > tls.connect({ socket }) over a half-open socket stays writab ... (truncated) release without fix: all passed bun test v1.4.3-canary.1 (00fab6991) test/js/node/tls/node-tls-socket-allow-half-open-option.test.ts: (pass) TLSSocket allowHalfOpen > new TLSSocket(socket) takes the wrapped socket's allowHalfOpen, ignoring the option [8.83ms] (pass) TLSSocket allowHalfOpen > without a socket to wrap, the option is honored [0.16ms] (pass) TLSSocket allowHalfOpen > tls.connect({ socket }) takes the given socket's allowHalfOpen, ignoring the option [4.39ms] (pass) TLSSocket allowHalfOpen > a peer reset under a server-side wrap > a socket injected into a tls.Server: a reset during the handshake is a 'tlsClientError' [20.27ms] (pass) TLSSocket allowHalfOpen > the wrapped socket closing > new TLSSocket(duplex, { isServer }): the duplex closing [36.67ms] (pass) TLSSocket allowHalfOpen > over a connection > a server-side wrap of a half-open socket stays writable after the peer ends [48.42ms] (pass) TLSSocket allowHalfOpen > over a connection > a server-side wrap of a regular socket ends itself after the peer ends, even with allowHalfOpen: true [44.45ms] (pass) TLSSocket allowHalfOpen > over a connection > a socket injected into a tls.Server keeps its own allowHalfOpen [44.65ms] (pass) TL ... (truncated) ``` </details> <details><summary>passes on PR (with fix)</summary> ```console ASAN with fix: all passed $ BUN_DEBUG_QUIET_LOGS=1 bun scripts/build.ts --profile=debug --quiet test "--reporter=junit" "--reporter-outfile=/tmp/pr_gate.xml" test/js/node/tls/node-tls-socket-allow-half-open-option.test.ts bun test v1.4.3 (4ff9193) test/js/node/tls/node-tls-socket-allow-half-open-option.test.ts: (pass) TLSSocket allowHalfOpen > new TLSSocket(socket) takes the wrapped socket's allowHalfOpen, ignoring the option [215.09ms] (pass) TLSSocket allowHalfOpen > without a socket to wrap, the option is honored [9.47ms] (pass) TLSSocket allowHalfOpen > tls.connect({ socket }) takes the given socket's allowHalfOpen, ignoring the option [206.47ms] (pass) TLSSocket allowHalfOpen > over a connection > a server-side wrap of a half-open socket stays writable after the peer ends [953.62ms] (pass) TLSSocket allowHalfOpen > over a connection > a server-side wrap of a regular socket ends itself after the peer ends, even with allowHalfOpen: true [840.71ms] (pass) TLSSocket allowHalfOpen > over a connection > a socket injected into a tls.Server keeps its own allowHalfOpen [839.34ms] (pass) TLSSocket allowHalfOpen > over a connection > tls.connect({ socket }) over a half-open socket stays writabl ... (truncated) release with fix: all passed $ bun scripts/build.ts --profile=release [configured] bun-profile → bun (stripped) in 692ms (unchanged) ninja: Entering directory `/workspace/bun/build/release' [1/6] gen generated_host_exports.rs generated_host_exports.rs: 122 exports (host=5, lazy=10, generic=107, rust=0); 243 extern-C blocks audited [1/6] cargo bun_runtime → libbun_runtime.a �[1m�[92m Compiling�[0m bun_core v0.0.0 (/workspace/bun/src/bun_core) �[1m�[92m Compiling�[0m bun_errno v0.0.0 (/workspace/bun/src/errno) �[1m�[92m Compiling�[0m bun_ptr v0.0.0 (/workspace/bun/src/ptr) �[1m�[92m Compiling�[0m bun_boringssl_sys v0.0.0 (/workspace/bun/src/boringssl_sys) �[1m�[92m Compiling�[0m bun_safety v0.0.0 (/workspace/bun/src/safety) �[1m�[92m Compiling�[0m bun_base64 v0.0.0 (/workspace/bun/src/base64) �[1m�[92m Compiling�[0m bun_cares_sys v0.0.0 (/workspace/bun/src/cares_sys) �[1m�[92m Compiling�[0m bun_zlib_sys v0.0.0 (/workspace/bun/src/zlib_sys) �[1m�[92m Compiling�[0m bun_zstd v0.0.0 (/workspace/bun/src/zstd) �[1m�[92m Compiling�[0m bun_picohttp v0.0.0 (/workspace/bun/src/picohttp) �[1m�[92m Compiling�[0m bun_paths v0.0.0 (/workspace/bun/src/paths) �[1m�[92m Compiling�[0m b ... (truncated) ``` </details> <details><summary>diff hotspot</summary> ``` src/runtime/socket/socket_body.rs | 21 +++--- .../node-tls-socket-allow-half-open-option.test.ts | 77 ++++++++++++++++++++++ 2 files changed, 89 insertions(+), 9 deletions(-) ``` </details> **gate history** · 2 passed · 0 rejected · iteration 0 <details><summary>evidence per changed file</summary> ``` file reads edits tests src/runtime/socket/socket_body.rs 4 1 23 …node/tls/node-tls-socket-allow-half-open-option.test.ts 4 4 23 ``` </details> <!-- robobun:evidence:end -->
Member
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@robobun Node v26.3.0 fails the new "a clean peer close keeps unread data" test: a paused TLS socket keeps the Duplex transport open (no 'close'), and for-await ends with ABORT_ERR. |
…duplex-close-propagates
…lose Node keeps the transport open under a paused TLS socket, so the paused case waited for a transport 'close' that never comes there, and Node's stream iterator aborts a half-open socket after the loop, which the for-await case counted as a failure. The paused case now resumes once the server has flushed everything, asserts that the socket is still alive at that point, and then expects every byte and 'end'. Neither case asserts anything after 'end'.
Collaborator
Author
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@cirospaciari Done in fb8af75. Both cases now assert only the shared behavior, and I ran the describe block on Node v26.3.0 (the test code itself, with What changed in "a clean peer close keeps unread data":
I confirmed that my Node run reproduces your two failures on the previous revision (the paused case times out, the for-await case gets The late read still lands where the bug is in Bun: at that I also merged current main into the branch (it was 107 commits behind). |
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Author
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The same-tick The fix is on a branch that is this PR's head plus one commit, so it fast-forwards: It changes two things in
Events on the TLS socket, this head merged with main 367d939, debug+ASAN, linux x64:
The commit adds two tests to this PR's describe block ("follows that transport's teardown"). Both assert what Node prints. The same-tick one fails without the commit ( If this PR lands without it, I will open the commit as its own PR on top of main. |
Jarred-Sumner
deleted the
robobun/73a87144/tls-duplex-close-propagates
branch
September 22, 2026 07:36
alii
added a commit
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this pull request
Sep 24, 2026
…cket it wraps (#42487) ### Problem - `new tls.TLSSocket(socket, { isServer: true })` and `tls.connect({ socket })` wrap a connected `net.Socket`. When the connection closes, the wrapped socket reports events that belong to the TLS socket: `'end'` and `'finish'` on a close, `'error'` on a peer reset. Node emits only `'close'` on it. - Its `'close'` then destroys the TLS socket early. After `raw.end()`, `finished(tlsSocket)` reports `ERR_STREAM_PREMATURE_CLOSE`. Regression from #39066 and #42265. - Cause: the native close calls the wrapped socket's close handler first (`ServerHandlers.close`, `src/js/node/net.ts:1052`). It reports its own EOF or read error and closes. Its `'close'` runs `onUpgradedClose` (`net.ts:413`), which destroys the TLS socket. ### Fix - A wrapped socket's close handler reports nothing (`closeWithTLSSocket`). The TLS socket's close handler runs next and reports the EOF or the error. - The TLS socket closes the wrapped socket at `'end'`, or from `_destroy` after it queued its `'error'`. `destroy(err)` gives node's order: `tls error`, `raw close`, `tls close`. - Node does the same: `TLSWrap` owns the reads ([wrap.js#L723-L727](https://github.com/nodejs/node/blob/v26.3.0/lib/internal/tls/wrap.js#L723-L727)) and `TLSWrap.close()` destroys the wrapped socket ([wrap.js#L676-L688](https://github.com/nodejs/node/blob/v26.3.0/lib/internal/tls/wrap.js#L676-L688)). - Verified: two `node:test` files, `node-tls-wrapped-socket-close.test.ts` (14 cells) and `node-tls-raw-end.test.ts` (4 tests, by @alii). Node v26.3.0 passes all 18. Bun 1.4.2 fails 11. Main's `src/` fails all 18. This branch passes all. ### Background - The TLS socket adopts the fd. The wrapped socket keeps a raw handle (`kAdoptedTLSRaw`). - Only the TLS handle gets native events. Its `on_close` (`src/runtime/socket/socket_body.rs`) calls the raw handle's close handler, then the TLS socket's. - A `close_notify` reaches only the TLS socket. These closes have none: after the TLS socket's own FIN, a peer reset, `destroy()` by the owner. <details><summary>Notes</summary> **Scope.** #39066 made the `'close'` of the wrapped socket destroy the TLS socket. #42265 emptied the buffer of the wrapped socket, so its `'end'` is no longer held back by unread TLS bytes. Two PRs landed on main after this one opened and repaired parts of the damage. #42293 removed the tick drain between the two close handlers, so the TLS socket gets its `'end'` and its reset error again. #42176 keeps unread data when the wrapped socket closes first. What is left on main: the wrapped socket still reports events of its own, a reset is still reported on it first with `hadError=true`, and `finished(tlsSocket)` fails after `raw.end()`. None of these PRs is in a release. **Test matrix.** Both files use `node:test` and `node:assert` only. Under bun, the last test of `node-tls-wrapped-socket-close.test.ts` runs the same file in Node.js. | | `node-tls-wrapped-socket-close.test.ts` (14 cells) | `node-tls-raw-end.test.ts` (4 tests) | |---|---|---| | Node.js v26.3.0, `node --test` | 14 pass (25 of 25 runs) | 4 pass | | Bun 1.4.2, `bun test` | 9 fail, 5 pass | 2 fail, 2 pass | | main b2ad29d, debug build of its `src/` | 14 fail | 4 fail | | this branch, debug + ASAN | 14 pass | 4 pass | The 5 cells that pass on Bun 1.4.2 are the `end()` cells with a TLS peer or after the handshake, and the unread-data cell. They broke on main after 1.4.2 (#39066, #42265). The other 9 were never right: 1.4.2 reports a reset on the wrapped socket, emits `raw end` and `raw finish` on `destroy(err)`, and in 4 cells never closes one of the sockets (those time out). **Traces.** Events of the two sockets on the observed side, in order. This branch prints node's trace in every cell. | cell | node v26.3.0 and this branch | main b2ad29d | |---|---|---| | server wrap, `end()` one tick or one `setImmediate` after the wrap, TLS or plain peer (4 cells) | `tls finish, tls end, raw close, tls close` | `tls finish, raw end, tls end, raw close, tls close` | | server wrap, `end()` after the handshake, peer answers `'end'` with `destroy()` | same as above | same as above | | `tls.connect({ socket })`, `end()` after the handshake, peer answers `'end'` with `destroy()` | same as above | same as above | | server wrap, peer answers `'end'` with 4 bytes then `destroy()`, nothing reads until the connection closed | `tls finish, (closed, unread=4), tls data late, tls end, raw close, tls close` | `tls finish, raw end, raw finish, raw close, (closed, unread=4), tls data late, tls end, tls close` | | server wrap, peer reset before or after the handshake (2 cells) | `tls error ECONNRESET, raw close, tls close hadError=true` | `raw error ECONNRESET, raw close hadError=true, tls error ECONNRESET, tls close hadError=true` | | `tls.connect({ socket })`, peer reset after the handshake | same as above | `raw error ECONNRESET, tls error ECONNRESET, tls close hadError=true, raw close hadError=true` | | `tlsServer.emit('connection', socket)`, peer reset before the handshake | `tlsClientError ECONNRESET, raw close, tls close hadError=true` | `raw error ECONNRESET, raw close hadError=true, tlsClientError ECONNRESET, tls close hadError=true` | | server wrap, owner calls `tlsSocket.destroy(err)` before or after the handshake (2 cells) | `tls error, raw close, tls close hadError=true` | `raw end, tls error, raw finish, raw close, tls close hadError=true` | | `tls.connect({ socket })`, owner calls `tlsSocket.destroy(err)` after the handshake | same as above | `raw end, tls error, raw finish, tls close hadError=true, raw close` | | server wrap, owner calls `raw.end()` (`node-tls-raw-end.test.ts`) | node: `raw finish, tls end, tls finish, finished ok, raw close, tls close`. This branch: `raw finish, tls end, raw close, tls finish, finished ok, tls close` | `raw finish, raw end, tls end, raw close, tls close, finished ERR_STREAM_PREMATURE_CLOSE` | In the last row this branch still closes the wrapped socket at the `'end'` of the TLS socket, so `raw close` comes before `tls finish`. Node closes it when the TLS socket is destroyed. That order is the same on main and is listed under "Not changed". **The order for `destroy(err)`.** The first version of this PR closed the wrapped socket from inside the native close, which runs inside `_destroy` before `_destroy` queues the `'error'`. The events were `raw close, tls error, tls close`. Now the close handler of the wrapped socket only records that the TLS socket owes the close (`kOwesRawClose`). `_destroy` pays it after `callback(err)`. A `_destroy` that deferred the close of its handle (a handshake failure closes it from a microtask) has returned by then, so the next tick pays it. In both cases the `'error'` is already queued. **Reset matrix.** Measured on the first commit against main b993710, before #42293. A matrix of 24 cells of resets. Three shapes: server wrap, socket injected into a `tls.Server`, client wrap. Two phases: before and after the handshake. Four placements of the `'error'` listener: on the wrapped socket, on the TLS socket, on both, on neither. The peer is always a node process. This branch printed node's trace in 20 cells. The 4 cells that differ are client wraps whose TLS socket has no `'error'` listener: node throws the ECONNRESET as an uncaught exception. Bun closes a socket with no `'error'` listener without an error, on every kind of socket. This PR does not change that. **Related PRs.** - #42293 (merged) made the TLS socket report a peer reset. Its two tests pass on this branch. - #42176 (merged) changed `onUpgradedClose` so that unread data survives. This PR does not touch that function. With this PR the wrapped socket no longer closes first in these cells, so that path is not reached. - #38028 moves the teardown of the wrapped socket into the TLS socket's `_destroy` for every wrap. It has conflicts with main. The `_destroy` call here covers only a wrapped socket whose fd has already closed. - #36534 changes the native upgrade so that the raw handle gets no JS dispatch. It has conflicts with main. If it lands, `closeWithTLSSocket` can go. The cells still apply to it, because they assert node's events only. **Not changed, same as main.** - `'end'` after a plain `destroy()`: bun emits one on plain `net` and `tls` sockets too. The fixture of #42181 documents it. A TLS socket that its owner destroys with no error still shows `tls end`. The wrapped socket no longer shows `raw end`. - A wrapped socket that its owner destroys directly (`raw.destroy()`): `tls end, tls finish, tls close, raw close`. Node: `raw close, tls close`. - When the TLS socket gets its `'end'` while the fd is still open (a peer that closes first with a `close_notify`, or `raw.end()`), `raw close` comes before `tls finish`. Node has `tls finish` first. - `destroy()` in the same tick as the wrap, before the fd is adopted, does not close the wrapped socket. That is #38028. - `end()` in the same tick as the wrap sends no FIN. That is #42339. **Platforms.** The first commit (11 cells, as a fixture spawned on bun and on node) was also built and run on Windows x64: a canary of main failed the 11 bun cells, the branch passed all. The `destroy(err)` cells and the `node:test` files were run on Linux x64 only. **Other suites on this branch.** All of `test/js/node/tls/`, `node-http2-upgrade.test.mts`, `socket-retention.test.ts`, and 508 vendored `test-tls-*`, `test-https-*`, `test-http2-*` files: 506 pass. The two others also fail on main: `test-https-timeout.js` (debug build only) and `test-tls-client-allow-partial-trust-chain.js` (needs the test runner). Also on main in this container: `node-tls-server.test.ts` "SNICallback runs even when the requested servername matches the bind hostname" (`localhost` resolves to `::1` first). </details> <!-- robobun:evidence:begin --> --- **[human-review]** gate passed · iteration 0 · 3 files touched <details><summary>fails on main (without fix)</summary> ```console ASAN without fix: 14 FAILED $ BUN_DEBUG_QUIET_LOGS=1 bun scripts/build.ts --profile=debug --quiet test "--reporter=junit" "--reporter-outfile=/tmp/pr_gate.xml" test/js/node/tls/node-tls-upgrade.test.ts bun test v1.4.3 (09bb546) test/js/node/tls/node-tls-upgrade.test.ts: (pass) should be able to upgrade a paused socket and also have backpressure on it #15438 [1654.06ms] (pass) tls.connect({ socket }) over a net.Socket with readable: false keeps the TLS bytes off the wrapped socket [334.63ms] (pass) tls.connect({ socket }) over a net.Socket with an onread buffer keeps the TLS bytes off the wrapped socket [113.54ms] (pass) tls.connect({ socket }) over a net.Socket with no reader keeps the TLS bytes off the wrapped socket [59.53ms] (pass) a STARTTLS exchange hands no TLS bytes to the 'data' listeners of the wrapped sockets (#32239) [164.21ms] 182 | ["net", "process.nextTick"], 183 | ["net", "setImmediate"], 184 | ])( 185 | "new TLSSocket(socket, { isServer }) end()s before the handshake completes, %s peer, from %s", 186 | async (peer, when) => { 187 | expect(await run("end-before-handshake", peer, when)).toEqual(eof); ... (truncated) release without fix: 14 FAILED bun test v1.4.3-canary.1 (09bb546) test/js/node/tls/node-tls-upgrade.test.ts: (pass) should be able to upgrade a paused socket and also have backpressure on it #15438 [55.44ms] (pass) tls.connect({ socket }) over a net.Socket with readable: false keeps the TLS bytes off the wrapped socket [6.04ms] (pass) tls.connect({ socket }) over a net.Socket with an onread buffer keeps the TLS bytes off the wrapped socket [2.90ms] (pass) tls.connect({ socket }) over a net.Socket with no reader keeps the TLS bytes off the wrapped socket [2.57ms] (pass) a STARTTLS exchange hands no TLS bytes to the 'data' listeners of the wrapped sockets (#32239) [3.81ms] 182 | ["net", "process.nextTick"], 183 | ["net", "setImmediate"], 184 | ])( 185 | "new TLSSocket(socket, { isServer }) end()s before the handshake completes, %s peer, from %s", 186 | async (peer, when) => { 187 | expect(await run("end-before-handshake", peer, when)).toEqual(eof); ^ error: expect(received).toEqual(expected) [ "tls finish", - "tls end", + "raw end", + "raw finish", "raw close hadError=false", "tls close ... (truncated) ``` </details> <details><summary>passes on PR (with fix)</summary> ```console ASAN with fix: all passed $ BUN_DEBUG_QUIET_LOGS=1 bun scripts/build.ts --profile=debug --quiet test "--reporter=junit" "--reporter-outfile=/tmp/pr_gate.xml" test/js/node/tls/node-tls-upgrade.test.ts bun test v1.4.3 (09bb546) test/js/node/tls/node-tls-upgrade.test.ts: (pass) should be able to upgrade a paused socket and also have backpressure on it #15438 [1471.02ms] (pass) tls.connect({ socket }) over a net.Socket with readable: false keeps the TLS bytes off the wrapped socket [236.85ms] (pass) tls.connect({ socket }) over a net.Socket with an onread buffer keeps the TLS bytes off the wrapped socket [84.87ms] (pass) tls.connect({ socket }) over a net.Socket with no reader keeps the TLS bytes off the wrapped socket [75.39ms] (pass) a STARTTLS exchange hands no TLS bytes to the 'data' listeners of the wrapped sockets (#32239) [188.67ms] (pass) the close of a connection under a TLS socket and the net.Socket it wraps (bun) > new TLSSocket(socket, { isServer }) end()s before the handshake completes, tls peer, from setImmediate [2170.33ms] (pass) the close of a connection under a TLS socket and the net.Socket it wraps (bun) > new TLSSocket(socket, { isServer }) end()s before the handshake comp ... (truncated) release with fix: all passed $ bun scripts/build.ts --profile=release [configured] bun-profile → bun (stripped) in 1157ms (unchanged) ninja: Entering directory `/workspace/bun/build/release' [1/125] gen JS modules (bundle-modules) Preprocess modules (8646ms) Bundle modules (67ms) Postprocesss modules (24ms) Bundle Functions (433ms) Generate Code (28ms) [9.20s] Bundled "src/js" for production 2600 kb 197 internal modules 13 native modules 50 internal functions across 16 files [1/8] cargo bun_runtime → libbun_runtime.a ^[[1m^[[92m Compiling^[[0m bun_core v0.0.0 (/workspace/bun/src/bun_core) ^[[1m^[[92m Compiling^[[0m bun_errno v0.0.0 (/workspace/bun/src/errno) ^[[1m^[[92m Compiling^[[0m bun_ptr v0.0.0 (/workspace/bun/src/ptr) ^[[1m^[[92m Compiling^[[0m bun_boringssl_sys v0.0.0 (/workspace/bun/src/boringssl_sys) ^[[1m^[[92m Compiling^[[0m bun_safety v0.0.0 (/workspace/bun/src/safety) ^[[1m^[[92m Compiling^[[0m bun_base64 v0.0.0 (/workspace/bun/src/base64) ^[[1m^[[92m Compiling^[[0m bun_cares_sys v0.0.0 (/workspace/bun/src/cares_sys) ^[[1m^[[92m Compiling^[[0m bun_zlib_sys v0.0.0 (/workspace/bun/src/zlib_sys) ^[[1m^[[92m Compiling^[[0m bun_zstd v0.0.0 (/workspace/bun/src/zstd) ^[[1m^[[92m Compi ... (truncated) ``` </details> <details><summary>diff hotspot</summary> ``` src/js/node/net.ts | 37 +++- test/js/node/tls/node-tls-upgrade.test.ts | 100 ++++++++++- .../node/tls/tls-wrapped-socket-close-fixture.mjs | 193 +++++++++++++++++++++ 3 files changed, 321 insertions(+), 9 deletions(-) ``` </details> **gate history** · 2 passed · 0 rejected · iteration 0 <details><summary>evidence per changed file</summary> ``` file reads edits tests src/js/node/net.ts 19 21 51 test/js/node/tls/node-tls-upgrade.test.ts 9 6 45 test/js/node/tls/tls-wrapped-socket-close-fixture.mjs 4 6 52 ``` </details> <!-- robobun:evidence:end --> --------- Co-authored-by: Alistair Smith <hi@alistair.sh>
cirospaciari
added a commit
that referenced
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Sep 25, 2026
Builds on #42176, which is merged. The base of this PR is `main`. Consolidates #42240 (the same fix). ### Problem - A TLS upgrade over a generic `Duplex` listens for the transport's `data`, `end`, `drain` and `close`, but not its `error`. So `transport.destroy(err)` after the upgrade throws `err` as an uncaught exception. Node emits it on the TLS socket. - `transport.listenerCount('error')` is 0 in bun and 1 in node v26.3.0. An `https.request` over such a socket kills the process and does not fail the request. ### Fix - `forwardUpgradedError` (`src/js/node/net.ts`) forwards the transport's `error` through `_emitTLSError`. The four stream-engine attach sites call it. A client sees `'error'`. A server wrap keeps it on `'_tlsError'` (`'tlsClientError'` on a `tls.Server`). The transport's `'close'` then ends the socket (#42176). - A `net.Socket` transport (a named pipe, unflushed writes, TLS over TLS) is excluded. Its close paths synthesize a read `ECONNRESET` as soon as anything listens for `'error'`. See Notes. - Verified: `test/js/node/tls/node-tls-connect.test.ts`, 5 new tests. One runs `node-tls-duplex-transport-error-fixture.ts` through `bunRun` (six wrap cases in one subprocess). All 5 fail on `main`. Also `test/js/node/tls` and 9 vendored `test-tls-*` tests. ### Background - A stream with no fd cannot use the kernel TLS path. `upgradeDuplexToTLS` runs a BoringSSL engine over the stream, driven by four native thunks on the stream's events. None is an error thunk. - Node wraps the stream in a `JSStreamSocket`, which re-emits the stream's `'error'`. `TLSSocket._init` forwards that error with `_emitTLSError`. - `_emitTLSError` already exists in `src/js/node/tls.ts`. It emits `'_tlsError'` always, and `'error'` only once `_releaseControl` has run. `tls.connect()` releases control at once, a server socket on `'secure'`. <details><summary>Notes</summary> #### Measurements Each case wraps a `Duplex`, then calls `transport.destroy(new Error("transport failed"))`. Events on the TLS socket (or the request), linux x64, debug+ASAN. The first six rows are `node-tls-duplex-transport-error-fixture.ts`, and the node column is v26.3.0 with the same fixture. The `https.request` row runs in the test process. | case | `main` (has #42176) | this branch | node v26.3.0 | | --- | --- | --- | --- | | `tls.connect({ socket })`, destroy in the same tick | uncaught `transport failed`, non-zero exit | `_tlsError`, `error`, `close:false` | same | | `tls.connect({ socket })`, destroy after the ClientHello | uncaught, non-zero exit | `_tlsError`, `error`, `close:false` | same | | server wrap, destroy in the same tick | uncaught, non-zero exit | `_tlsError`, `close:false` | same | | server wrap, destroy after the engine started | uncaught, non-zero exit | `_tlsError`, `close:false` | same | | `tlsServer.emit("connection", duplex)`, destroy in the same tick | uncaught, non-zero exit | `tlsClientError` with the `TLSSocket`, `close:false` | same | | `tlsServer.emit("connection", duplex)`, destroy after the engine started | uncaught, non-zero exit | `tlsClientError` with the `TLSSocket`, `close:false` | same | | `https.request` over the wrap | uncaught, non-zero exit | `req.error`, `req.close` with `req.destroyed === true` | same | A transport that errors without closing also matches node: the error reaches the TLS socket and the socket stays alive (`destroyed === false`). Two more cases from #42240, measured by hand on this branch (no test): | case | bun 1.4.3-canary.1 | this branch | node v26.3.0 | | --- | --- | --- | --- | | `tlsSocket.destroy()` over `Duplex.from({ readable, writable })` | uncaught `ABORT_ERR` | `error:ABORT_ERR`, `close:false` | same | | transport whose `write` calls back with an error, `s.write(data, cb)` queued | uncaught `EBOOM`, `cb` never called, no `'close'` | `error:EBOOM`, `cb(ERR_SOCKET_CLOSED)`, `close:false` | `error:EBOOM`, `cb(ECANCELED)`, `close:false` | The callback code in the last row differs because node cancels the queued write through `JSStreamSocket.doClose`. #35386 covers `ECANCELED` for cancelled TLS writes. #### Consolidation of #42240 #42240 carried the same listener with the same `net.Socket` guard. This branch keeps the test shape the review here asked for (`bunRun`, a fixture file, a one-line comment plus the node links). The cases that only #42240 had are now in the fixture: a server wrap at both timings, `https.request` over the wrap, `'_tlsError'`, and the `'close'` `hadError` flag. #42176 dropped the `attachUpgradedDuplex` helper that both PRs had patched. It now attaches the four thunks inline at each site. So the listener moved to `forwardUpgradedError`, which each site calls after it attaches the four thunks. #### Scope: every `net.Socket` transport is left out Two arms wrap a `net.Socket`, and neither gets the listener: - The fd-adoption arm. `tls.connect({ socket: connectedNetSocket })` with no queued writes hands the fd to a native TLS pair (`upgradeTLS`) and attaches nothing to the `net.Socket`. - The stream-level engine over a `net.Socket`: TLS over TLS, a named pipe, or a socket with queued plain writes. These reach `forwardUpgradedError` and the `instanceof Socket` check skips them. Node attaches the same listener in both, so `sock.destroy(err)` on such a transport is still uncaught in bun. The reason is one mechanism. `SocketEmitEndNT`, `SocketHandlers2.close`, `failWrite` and `ServerHandlers.error` turn a peer reset into `destroy(ECONNRESET)` only when the socket has an `'error'` listener, and stay silent otherwise. A forwarder counts as a listener. The first push of #42240 attached it to every transport. `test-tls-inception.js` (TLS over TLS, no `'error'` listener anywhere) then failed on Windows x64, Windows arm64 and macOS arm64 with an uncaught `read ECONNRESET`. On Windows x64 the base passed 5 of 5 runs, that push failed 5 of 5, and the narrowed listener passed 6 of 6. Those arms also have a second route to the same failure (the raw socket's own dispatch), so they need the de-duplication that #36534 and #38122 are about. `new tls.TLSSocket(stream)` with no `connect()` wraps nothing today, so nothing reaches it there either. That is #37664's subject. `_http2_upgrade.ts` has a fifth copy of the same four `.on()` calls. #38124 routes its transport error to the h2 session. #### Fixture startup The fixture runs its six cases in one subprocess and takes the key and the cert from `KEY` and `CERT`, which the test sets. An earlier shape ran five subprocesses at once, and each imported `harness`. A debug build needs about 1.5 s to load `node:tls` and about 1 s more for `harness`, so on a loaded machine (load average 150 on 16 cores) two of the five reached the 5 s test timeout. The one subprocess takes 2.1 to 2.8 s on the same machine. #### Suites `test/js/node/tls/node-tls-connect.test.ts`: 84 pass, 0 fail. `test/js/node/tls/`: 391 pass, 3 fail, none on the Duplex wrap path. `SNICallback runs even when the requested servername matches the bind hostname` binds `localhost` and connects to `127.0.0.1`, and fails the same way on the released binary in this container. `tls.Server socket destroySoon > delivers the whole stream when destroySoon follows end` (64 rounds of 2 MB) times out at 5 s on this debug build, and does the same with `main`'s `net.ts`. `root certificate initialization > concurrent Workers all see the same CA certificate lists` times out in some runs on this loaded machine. Vendored, all exit 0: `test-tls-inception`, `test-tls-js-stream`, `test-tls-connect-given-socket`, `test-tls-delayed-attach-error`, `test-tls-socket-failed-handshake-emits-error`, `test-tls-over-http-tunnel`, `test-tls-starttls-server`, `test-tls-destroy-stream`, `test-https-agent-create-connection`. </details> <!-- robobun:evidence:begin --> --- **[human-review]** gate passed · iteration 0 · 3 files touched <details><summary>fails on main (without fix)</summary> ```console ASAN without fix: 7 failed, 18 skipped $ BUN_DEBUG_QUIET_LOGS=1 bun scripts/build.ts --profile=debug --quiet test "--reporter=junit" "--reporter-outfile=/tmp/pr_gate.xml" test/js/node/tls/node-tls-connect.test.ts bun test v1.4.3 (367d939) test/js/node/tls/node-tls-connect.test.ts: (pass) should have checkServerIdentity [4.73ms] (pass) should thow ECONNRESET if FIN is received before handshake [534.04ms] (pass) initializes authorizationError to null in the TLSSocket constructor [6.87ms] (pass) setMaxSendFragment mirrors OpenSSL's [512, 16384] acceptance without throwing [120.38ms] (pass) should be able to grab the JSStreamSocket constructor [14.03ms] (skip) tls.connect > should work with alpnProtocols (pass) tls.connect > Bun.serve() should work with tls and Bun.file() [116.64ms] (pass) tls.connect > should have peer certificate when using self asign certificate [150.83ms] (skip) tls.connect > should have peer certificate (skip) tls.connect > getCipher, getProtocol, getEphemeralKeyInfo, getSharedSigalgs, getSession, exportKeyingMaterial and isSessionReused should work (skip) tls.connect > should process options correctly when connect is called with only options (skip) tls.connect > should process port ... (truncated) release without fix: 11 failed, 18 skipped bun test v1.4.3-canary.1 (367d939) test/js/node/tls/node-tls-connect.test.ts: (pass) should have checkServerIdentity [0.03ms] (pass) should thow ECONNRESET if FIN is received before handshake [6.17ms] (pass) initializes authorizationError to null in the TLSSocket constructor [0.16ms] (pass) setMaxSendFragment mirrors OpenSSL's [512, 16384] acceptance without throwing [3.30ms] (pass) should be able to grab the JSStreamSocket constructor [0.21ms] (skip) tls.connect > should work with alpnProtocols (pass) tls.connect > Bun.serve() should work with tls and Bun.file() [5.48ms] (pass) tls.connect > should have peer certificate when using self asign certificate [4.83ms] (skip) tls.connect > should have peer certificate (skip) tls.connect > getCipher, getProtocol, getEphemeralKeyInfo, getSharedSigalgs, getSession, exportKeyingMaterial and isSessionReused should work (skip) tls.connect > should process options correctly when connect is called with only options (skip) tls.connect > should process port and host correctly (skip) tls.connect > should process port, host, and callback correctly (skip) tls.connect > should handle the absence of a callback gracefully (skip) tls.c ... (truncated) ``` </details> <details><summary>passes on PR (with fix)</summary> ```console ASAN with fix: 18 skipped $ BUN_DEBUG_QUIET_LOGS=1 bun scripts/build.ts --profile=debug --quiet test "--reporter=junit" "--reporter-outfile=/tmp/pr_gate.xml" test/js/node/tls/node-tls-connect.test.ts bun test v1.4.3 (367d939) test/js/node/tls/node-tls-connect.test.ts: (pass) should have checkServerIdentity [3.79ms] (pass) should thow ECONNRESET if FIN is received before handshake [386.28ms] (pass) initializes authorizationError to null in the TLSSocket constructor [6.71ms] (pass) setMaxSendFragment mirrors OpenSSL's [512, 16384] acceptance without throwing [102.58ms] (pass) should be able to grab the JSStreamSocket constructor [15.93ms] (skip) tls.connect > should work with alpnProtocols (pass) tls.connect > Bun.serve() should work with tls and Bun.file() [97.47ms] (pass) tls.connect > should have peer certificate when using self asign certificate [122.29ms] (skip) tls.connect > should have peer certificate (skip) tls.connect > getCipher, getProtocol, getEphemeralKeyInfo, getSharedSigalgs, getSession, exportKeyingMaterial and isSessionReused should work (skip) tls.connect > should process options correctly when connect is called with only options (skip) tls.connect > should process port a ... (truncated) release with fix: 18 skipped $ bun scripts/build.ts --profile=release [configured] bun-profile → bun (stripped) target linux-x64-gnu build type Release build dir ./build/release revision 9098c05 features lto, baseline 23 deps, 136 codegen, 1176 objects in 977ms ninja: Entering directory `/workspace/bun/build/release' [1/4] fetch lolhtml [lolhtml] up to date [2/4] fetch rust-argon2 [rust-argon2] up to date [2/4] cargo plan → /workspace/bun/build/release/rust-target/plan.json 244 units: 172 lib, 16 proc-macro (host), 19 custom-build (host), 15 run custom-build, 17 lib (host), 4 run custom-build (host), 1 rlib [3/4] reconfigure [1/1499] mkdir codegen [2/1499] mkdir stamps [3/1499] install /workspace/bun bun install v1.4.3-canary.1 (367d939) Checked 26 installs across 65 packages (no changes) [15.00ms] [4/1499] install /workspace/bun/packages/bun-error bun install v1.4.3-canary.1 (367d939) Checked 1 install across 2 packages (no changes) [4.00ms] [5/1499] install /workspace/bun/src/node-fallbacks bun install v1.4.3-canary.1 (367d939) Checked 111 installs across 104 packages (no changes) [6.00ms] [6/1499] rustc unicode_ident [7/1499] gen node-fallbacks ... (truncated) ``` </details> <details><summary>diff hotspot</summary> ``` src/js/node/net.ts | 10 ++++ test/js/node/tls/node-tls-connect.test.ts | 45 ++++++++++++++++- .../tls/node-tls-duplex-transport-error-fixture.ts | 58 ++++++++++++++++++++++ 3 files changed, 112 insertions(+), 1 deletion(-) ``` </details> **gate history** · 5 passed · 0 rejected · iteration 0 <details><summary>evidence per changed file</summary> ``` file reads edits tests src/js/node/net.ts 13 12 41 test/js/node/tls/node-tls-connect.test.ts 3 4 39 …/js/node/tls/node-tls-duplex-transport-error-fixture.ts 1 3 44 ``` </details> <!-- robobun:evidence:end --> --------- Co-authored-by: robobun <robobun@bun.sh> Co-authored-by: Ciro Spaciari <ciro.spaciari@gmail.com>
robobun
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#42176 left the four native listener functions of a context set when the close came before the engine. A GC between the close task and the task that frees the context freed them, and the second task wrote a null data pointer into the freed cells. A wrap made in between reuses those cells, and its handshake then stalls. The test makes 16 such closed wraps, runs a GC and 8 fresh wraps inside the window, and requires every one of the 8 to get its answer.
Jarred-Sumner
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…ists (#44196) A TLS socket over a `stream.Duplex` (`tls.connect({ socket })`, `new TLSSocket(duplex)`) has no fd. Bun runs a TLS engine over the stream, and a queued task starts that engine after the wrap. "Before the engine" below is the rest of the script, `process.nextTick`, microtasks and promise jobs. The lost EOF needs the close hook of #39066. The freed listener functions need the `pending_close` branch of #42176. No release has either. ### What the TLS socket emits | The transport, before the engine | Node v26.10 | main | This PR | |---|---|---|---| | Client: EOF, close | `end`, ECONNRESET, `close` true | `close` false | as Node | | Server wrap: EOF, close | `end`, `close` false | `close` false | as Node | | Client: bytes, EOF, close | `end`, ECONNRESET, `close` true | `close` false | as Node | | Server wrap: bytes, EOF, close | `end`, `close` false | `close` false | as Node | | Client: non-TLS bytes, EOF | ERR_SSL_HTTP_REQUEST, `close` true | `secureConnect`, `end`, `close` false | `end`, ECONNRESET, `close` true | | Server wrap: a complete ClientHello, EOF | `end`, 1 write | `end`, 1 write | as Node | | Server wrap: a complete ClientHello, EOF, close | `close` false | `close` false | `end`, `close` false | Last row: Node writes its answer to the ended transport, and that failure closes the socket ahead of `end`. The same rows after the engine started do not change. ### What happens to the transport | Case | Node v26.10 | main | This PR | |---|---|---|---| | `tls.connect({ socket: netSocket }).destroy()` in the same tick | raw socket closed, peer gets a FIN | raw socket open, no FIN | as Node | | The socket or the transport is destroyed after the engine started | no `end()`, `writableEnded` false | `end()` on the destroyed transport, `writableEnded` true | as Node | | 16 wraps closed before the engine, a GC, then 8 new wraps | | 7 of 8 never reach `secureConnect` | 8 of 8 answer | Last row: the close left the four listener functions of the context set. The GC freed them, and the task that frees the context then wrote into the freed cells. ### What the transport throws | Case | Node v26.10 | main | This PR | |---|---|---|---| | The `write` getter throws (the ClientHello) | `uncaughtException` | the exception stays pending on the VM (debug build: panic) | `error` on the socket, `close` true | | The `end` getter throws, close after the engine started | `end` is not read | the exception stays pending on the VM (debug build: assertion) | `uncaughtException` | | `end()` throws, close after the engine started | `end()` is not called | dropped | `uncaughtException` | | `end()` or its getter throws, close before the engine | `end()` is not called | `end()` is not called | `uncaughtException` | The `end` rows need a transport that is not ended and not destroyed when the socket closes. ### Behavior changes | Case | Before | After | |---|---|---| | Close before the engine, transport not ended and not destroyed | the transport is left as it is | `end()` is called on it | | `end()` of the transport throws during the close | dropped | uncaught exception | | Close after the engine started, transport destroyed | `end()` is called, `writableEnded` true | no call, `writableEnded` false | | EOF before the engine | held until the engine starts | reported inside the transport's `'end'` | | Client, EOF only, before the engine | 1 write (the ClientHello) | 0 writes (Node: 1) | | Client, bytes ahead of an EOF, before the engine | the engine reads them | not read, so an SSL error in them shows as ECONNRESET | | Server wrap, `socket.end()` in an `'end'` listener | transport `writableEnded` true, `final` not called | `writableEnded` false, `final` not called (Node: true, `final` called, see #42350) | ### Not in this PR - #32929: non-TLS bytes give a client `secureConnect`. - #38058: a server wrap whose handshake fails gets no `'close'`. - #43392: an extra `'end'` ahead of `'close'` when the socket is destroyed after the engine started. - #42350: `socket.end()` ends the transport. - #38028: destroy a wrapped `net.Socket`, as Node does. This PR ends it. ### Tests `node-tls-connect.test.ts` and `node-tls-duplex-close-throw-uaf.test.ts`: 25 fail on main (9f70da0), 0 fail with this PR. `test/js/node/tls` and `test/js/node/http2`: 1077 pass, 0 fail. Debug + ASAN, macOS arm64. <!-- robobun:evidence:begin --> --- **[human-review]** gate passed · iteration 3 · 4 files touched <details><summary>fails on main (without fix)</summary> ```console ASAN without fix: 15 failed, 18 skipped $ BUN_DEBUG_QUIET_LOGS=1 bun scripts/build.ts --profile=debug --quiet test "--reporter=junit" "--reporter-outfile=/tmp/pr_gate.xml" test/js/node/tls/node-tls-connect.test.ts test/js/node/tls/node-tls-duplex-close-throw-uaf.test.ts bun test v1.4.3 (367d939) test/js/node/tls/node-tls-duplex-close-throw-uaf.test.ts: (pass) tls.connect({socket: Duplex}) does not read freed Handlers > when a pre-open duplex error races StartTLS [1332.69ms] (pass) tls.connect({socket: Duplex}) does not read freed Handlers > when duplex.end() throws after close [1443.48ms] 25 | const [stdout, stderr, exitCode] = await Promise.all([proc.stdout.text(), proc.stderr.text(), proc.exited]); 26 | 27 | // On failure stderr carries the ASAN "use-after-poison" report; include 28 | // it in the assertion so the diff shows the crash rather than just an 29 | // empty stdout. 30 | expect({ stdout: stdout.trim(), stderr, exitCode }).toEqual({ stdout: expected, stderr: "", exitCode: 0 }); ^ error: expect(received).toEqual(expected) { "exitCode": 0, "stderr": "", "stdout": - "the duplex closes, end() calls: 1 - the soc ... (truncated) release without fix: 34 failed, 22 skipped bun test v1.4.3-canary.1 (367d939) test/js/node/tls/node-tls-duplex-close-throw-uaf.test.ts: (skip) tls.connect({socket: Duplex}) does not read freed Handlers > when duplex.end() throws after close (skip) tls.connect({socket: Duplex}) does not read freed Handlers > when a pre-open duplex error races StartTLS (skip) tls.connect({socket: Duplex}) does not read freed Handlers > when duplex.end() throws after a close that comes before StartTLS (skip) tls.connect({socket: Duplex}) does not read freed Handlers > when an EOF listener destroys the socket and throws before StartTLS test/js/node/tls/node-tls-connect.test.ts: (pass) should have checkServerIdentity [0.20ms] (pass) should thow ECONNRESET if FIN is received before handshake [8.07ms] (pass) initializes authorizationError to null in the TLSSocket constructor [0.16ms] (pass) setMaxSendFragment mirrors OpenSSL's [512, 16384] acceptance without throwing [3.07ms] (pass) should be able to grab the JSStreamSocket constructor [0.23ms] (skip) tls.connect > should work with alpnProtocols (pass) tls.connect > Bun.serve() should work with tls and Bun.file() [42.60ms] (pass) tls.connect > should have peer certificate when ... (truncated) ``` </details> <details><summary>passes on PR (with fix)</summary> ```console ASAN with fix: 18 skipped $ BUN_DEBUG_QUIET_LOGS=1 bun scripts/build.ts --profile=debug --quiet test "--reporter=junit" "--reporter-outfile=/tmp/pr_gate.xml" test/js/node/tls/node-tls-connect.test.ts test/js/node/tls/node-tls-duplex-close-throw-uaf.test.ts bun test v1.4.3 (367d939) test/js/node/tls/node-tls-duplex-close-throw-uaf.test.ts: (pass) tls.connect({socket: Duplex}) does not read freed Handlers > when duplex.end() throws after close [2203.98ms] (pass) tls.connect({socket: Duplex}) does not read freed Handlers > when a pre-open duplex error races StartTLS [1670.45ms] (pass) tls.connect({socket: Duplex}) does not read freed Handlers > when duplex.end() throws after a close that comes before StartTLS [2263.36ms] (pass) tls.connect({socket: Duplex}) does not read freed Handlers > when an EOF listener destroys the socket and throws before StartTLS [2238.29ms] test/js/node/tls/node-tls-connect.test.ts: (pass) should have checkServerIdentity [2.07ms] (pass) should thow ECONNRESET if FIN is received before handshake [276.06ms] (pass) initializes authorizationError to null in the TLSSocket constructor [6.64ms] (pass) setMaxSendFragment mirrors OpenSSL's [512, 16384] acceptance without th ... (truncated) release with fix: 22 skipped $ bun scripts/build.ts --profile=release [configured] bun-profile → bun (stripped) target linux-x64-gnu build type Release build dir ./build/release revision 562c022 features lto, baseline 23 deps, 136 codegen, 1176 objects in 4630ms ninja: Entering directory `/workspace/bun/build/release' [1/4] fetch lolhtml [lolhtml] up to date [2/4] fetch rust-argon2 [rust-argon2] up to date [2/4] cargo plan → /workspace/bun/build/release/rust-target/plan.json 244 units: 172 lib, 16 proc-macro (host), 19 custom-build (host), 15 run custom-build, 17 lib (host), 4 run custom-build (host), 1 rlib [3/4] reconfigure [1/1499] mkdir stamps [2/1499] mkdir codegen [3/1499] install /workspace/bun bun install v1.4.3-canary.1 (367d939) Checked 26 installs across 65 packages (no changes) [730.00ms] [4/1499] rustc unicode_ident [5/1499] rustc build_script_build [6/1499] rustc heck [7/1499] install /workspace/bun/packages/bun-error bun install v1.4.3-canary.1 (367d939) Checked 1 install across 2 packages (no changes) [110.00ms] [8/1499] rustc build_script_build [9/1499] rustc unicode_xid [10/1499] rustc build_script_build [11/1499] rustc build_s ... (truncated) ``` </details> <details><summary>diff hotspot</summary> ``` src/runtime/socket/UpgradedDuplex.rs | 41 +-- src/runtime/socket/socket_body.rs | 2 +- test/js/node/tls/node-tls-connect.test.ts | 332 ++++++++++++++++++++- .../tls/node-tls-duplex-close-throw-uaf.test.ts | 103 ++++++- 4 files changed, 451 insertions(+), 27 deletions(-) ``` </details> **gate history** · 1 passed · 3 rejected · iteration 3 <details><summary>evidence per changed file</summary> ``` file reads edits tests src/runtime/socket/UpgradedDuplex.rs 8 6 68 src/runtime/socket/socket_body.rs 7 2 68 test/js/node/tls/node-tls-connect.test.ts 6 5 54 test/js/node/tls/node-tls-duplex-close-throw-uaf.test.ts 2 1 43 ``` </details> <!-- robobun:evidence:end --> --------- Co-authored-by: Jarred Sumner <jarred@jarredsumner.com>
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Fixes #41851 (the part #39066 left), and the data loss #39066 introduced.
Problem
'close'(onUpgradedClose,src/js/node/net.ts). After a clean peer close that drops unread data. 1 MB over an in-memory duplex pair: a paused reader gets 0 bytes,for awaitthrowsERR_STREAM_PREMATURE_CLOSE,pipeline()never settles. bun 1.4.2 and Node deliver everything.new tls.TLSSocket(duplex, { isServer: true }), thenduplex.destroy()onesetImmediatelater:'error'ECONNRESET and never'close'. Node emits'close'withhadError === false.duplex.destroy()in the same tick now closes the TLS socket, butUpgradedDuplex::close(src/runtime/socket/UpgradedDuplex.rs:547) still drops that close, so the queued engine start builds an engine nothing ever closes. It keeps the native socket strongly referenced until the VM stops.Fix
onUpgradedClosewaits for'end'before it destroys when the engine already delivered EOF and data is still unread. In every other state it destroys at once, as before.'close'thunk. The thunk aborts the pending handshake, and a socket destroyed first does not report it.UpgradedDuplex::closestages a close that lands before the engine exists (pending_close). TheStartTLStask reports it instead of starting an engine.test/js/node/tls/node-tls-connect.test.ts, four fail on main. Suites in the notes.Background
upgradeDuplexToTLSruns a BoringSSL engine over the stream, fed by four native thunks on the stream's'data','end','drain'and'close'.pause_streamis a TODO for this transport), and it ends the transport when it seesclose_notify. So the transport can close while the TLS socket still buffers the whole body.pending_dataandpending_endalready stage bytes and EOF from that window.pending_closeis the third.Notes
Measurements (linux x64, debug+ASAN, node v26.3.0)
new TLSSocket(transport, { isServer: true })ortls.connect({ socket: transport }), thentransport.destroy()at five moments. Events on the TLS socket:nextTick, microtasksetImmediate,setTimeout(server wrap)setImmediate,setTimeout(tls.connect)The extra
'end'in the late rows is a separate, older bug: a plainnet.Socket.destroy()also emits'end'before'close'in bun. It is tracked on its own.Clean peer close, 1 MB body over an in-memory duplex pair, bytes delivered to the reader:
'end'for awaitERR_STREAM_PREMATURE_CLOSEpipeline()into a slow sinkAt the transport's
'close'the TLS socket holdsreadableLength === 1048576with EOF already delivered. Since #39066 a wrap over aDuplexis half-open (allowHalfOpeninherited), so nothing else would close it after'end'. That is why the destroy is deferred to'end'and not dropped.The abandoned engine: on main the same-tick case closes the JS socket, then the queued
StartTLSstill runson_openinto it and starts a handshake into a destroyed stream. No close callback ever fires, somark_inactivenever runs and theJSTLSSocketwrapper stays a strong root. The new test countsheapStats().objectTypeCounts.TLSSocketafter 20 such wraps: 20 stay alive on main, none withpending_close. WithBUN_DEBUG_UpgradedDuplex=1the fixed path logsonCloseJSthendeinit, with nostartTLSand noonOpen.Tests
test/js/node/tls/node-tls-connect.test.ts, describe "a TLS socket over a Duplex transport follows that transport's teardown". On main'ssrc/: the pending-handshake server case times out, both unread-data cases fail (client.destroyedis already true before the late read,Premature close), the native-socket count fails. The two same-tick cases and the established-connection case pass on main since #39066 and stay as guards.The unread-data cases assert only what Node and Bun both do: the socket is alive before the late read, then every byte and
'end'. Nothing is asserted after'end', because Node keeps the transport open under a paused socket and its iterator aborts a half-open socket after the loop. The describe block passes on Node v26.3.0 (6 of 7, thebun:jscheap-count case cannot run there).Suites
test/js/node/tls/(320 pass; 1 failure,SNICallback runs even when the requested servername matches the bind hostname, which bindslocalhostand connects to127.0.0.1and fails the same way without this diff), including #39066's ownnode-tls-socket-allow-half-open-option.test.tsandrenegotiation.test.ts(20 pass).test/js/node/net/(same 11 failures as without the diff: theonread/connectcases,#13126,unref, one 60 s leak test).test/js/node/http2/(520 pass). 245 vendoredtest-tls-*andtest-https-*: 243 pass,test-https-timeout.jshangs with and without the diff in this container, andtest-tls-client-allow-partial-trust-chain.jsneeds the test runner. An earlier revision of the native half was also run on Windows (named pipes, 148 pass).Out of scope, tracked separately
'error'listener to the wrapped stream, sotransport.destroy(err)becomes an uncaughtException (node:tls: report a wrapped stream's error on the TLS socket #42240, node:tls: report a Duplex transport's error on the TLS socket #42235).pause_stream/resume_streamTODO arms insrc/uws_sys/socket.rs). With it the deferred destroy becomes unnecessary.transport.end()after a completed handshake is ignored on a plainDuplex.[human-review] gate passed · iteration 0 · 4 files touched
fails on main (without fix)
passes on PR (with fix)
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gate history · 2 passed · 0 rejected · iteration 0
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