node: net/tls/http/http2 compat fixes - #41400
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cirospaciari wants to merge 42 commits into
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Updated 3:18 PM PT - Sep 10th, 2026
❌ @cirospaciari, your commit 326067a has 1 failures in 🧪 To try this PR locally: bunx bun-pr 41400That installs a local version of the PR into your bun-41400 --bun |
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Pushed four commits for the review threads, all answered inline:
The socket_list.ts audit is in its thread (no code change needed). Two notes from build 110275 that my commits do not touch: |
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@robobun adopt and investigate why CI is failing on s3 |
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Looking at the s3.test.ts failures now. |
cirospaciari
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s3.test.ts: not this PR. The failures are the
Linux, macOS and Windows lanes all fail in the same way at the same time with code that did not change, so this is the R2 endpoint (or the egress to it) being slow for large uploads, not a runtime regression. I cannot reach R2 from here (no secrets) to measure it directly. If it keeps failing tomorrow, the next step is to time a 10 MB |
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WalkthroughSummaryThe change adds TLS context and keylog APIs, file-descriptor listening, IPC and cluster coordination, child-process stream handling, HTTP/1 and HTTP/2 validation, and regression tests. ChangesNode HTTP, TLS, and protocol behavior
IPC, cluster, and child-process coordination
Regression coverage
Possibly related PRs
Suggested reviewers: Merge Risk: 🟡 Moderate · up to This change expands TLS, IPC, HTTP, and child-process compatibility behavior, but unresolved TLS configuration, descriptor-cleanup, stream-handling, and regression-test failures can cause incorrect certificate behavior, stalled I/O, resource leaks, or failing test runs. These issues should be resolved before merge. 🚥 Pre-merge checks | ✅ 3 | ❌ 1❌ Failed checks (1 warning)
✅ Passed checks (3 passed)
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Actionable comments posted: 15
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Inline comments:
In `@src/http/HTTPContext.rs`:
- Around line 589-616: The replace_ssl_ctx_with_default_ca flow currently
returns silently when SSL context creation or empty-CA setup fails, while
apply_default_ca_override_cold records the generation regardless. Propagate or
report replacement failures through these symbols, and update
apply_default_ca_override_cold so it records the generation only after
replace_ssl_ctx_with_default_ca succeeds; preserve the binding’s failure
visibility instead of returning undefined without signaling an error.
In `@src/js/node/_http_server.ts`:
- Around line 351-352: Update setSecureContext around processServerTlsOptions
and tlsSymbol so existing requestCert and rejectUnauthorized values are
preserved when the new options omit them; explicitly supplied values must still
override the previous settings, while authorized and authorizationError continue
reading the resulting tls configuration.
- Around line 2258-2275: Update the synthetic TLS socket construction in the
encrypted branch of the NodeHTTPServerSocket flow so inherited TLSSocket methods
can access the native handle stored by SocketClass; bind or expose a compatible
_handle before returning the object from Reflect.construct, preserving the
existing lazy prototype setup.
In `@src/js/node/tls.ts`:
- Around line 613-616: Remove the unreachable rejectUnauthorized normalization
block near the end of the function, and update the earlier normalization branch
to call normalizeRejectUnauthorized instead of replacing non-boolean values with
true. Keep the existing minVersion and maxVersion handling unchanged.
In `@src/runtime/ipc_host.rs`:
- Line 198: Update the non-Process branch around the $target lookup to check
options_ with is_object() before calling get; read $target only for object
options, and use JSValue::UNDEFINED when options_ is omitted or non-object so
serialize_and_send still runs.
In `@src/runtime/server/server_body.rs`:
- Around line 3722-3725: The server_set_secure_context flow currently updates
only an existing listener, so contexts configured before listen() are lost.
Persist the new SSL context in the server state and have NewServer::listen use
that stored context when creating the listener, while retaining the existing
set_default_ssl_ctx update for an already-running listener.
In `@test/js/node/child_process/child_process_ipc_handle.test.ts`:
- Line 818: Update the Promise.all destructuring in the affected child-process
test cases to retain the third value from proc.stderr.text(), then include that
stderr value in the assertion object alongside stdout and exitCode so fixture
failures remain diagnosable.
- Line 803: Lower the setTimeout delay in the child-process fixture below Bun’s
5000 ms default test timeout, while preserving the existing TIMEOUT diagnostic
output and exit behavior.
In `@test/js/node/child_process/child-process-stdio.test.js`:
- Line 188: Update the repeated output construction in the setInterval callback
to use Buffer.alloc(4096, "y").toString() instead of "y".repeat(4096),
preserving the existing write behavior.
In `@test/js/node/cluster.test.ts`:
- Line 1577: Set an explicit 30_000 ms timeout on the cluster worker/TCP
round-trip test, matching the neighboring stale-probe test and allowing both
round trips on slow builds; leave the test logic unchanged.
In `@test/js/node/http2/node-http2.test.js`:
- Around line 3182-3219: Replace the duplicated inline exchange function with
calls to the module-scope exchangeFrames helper, preserving its existing inputs
and returned received frames. Also remove the local literal declarations at the
referenced test cases and reuse the module-scope literal definition instead.
In `@test/js/node/test/parallel/test-child-process-fork-getconnections.js`:
- Line 32: Update the process.on message handler using common.mustCall so it
expects count * 2 invocations, matching the count of new and close messages
received. Preserve the existing message-handling logic.
In
`@test/js/node/test/parallel/test-tls-set-default-ca-certificates-append-fetch.mjs`:
- Line 46: Update the test around setDefaultCACertificates to include the
bundled certificates alongside fixtureCert when exercising the append case, then
assert that a connection using a bundled root still succeeds. Preserve the
existing fixture-certificate coverage while validating the append contract.
In `@test/js/node/test/sequential/test-http2-ping-flood.js`:
- Around line 29-31: Update the session close handler in the close callback to
clear the flood timer stored in interval before calling server.close(), ensuring
cleanup also occurs when the error callback never runs.
In `@test/js/node/tls/node-tls-cert.test.ts`:
- Line 554: Update each Promise.withResolvers call in the affected TLS
certificate tests to provide the Error type argument, including the resolver
declarations used before err.code accesses and the corresponding later
occurrence. Match the existing Promise.withResolvers<Error> usage in the
nearby tests.
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📒 Files selected for processing (98)
packages/bun-usockets/src/context.cpackages/bun-usockets/src/crypto/openssl.cpackages/bun-usockets/src/eventing/epoll_kqueue.cpackages/bun-usockets/src/internal/internal.hpackages/bun-usockets/src/libusockets.hpackages/bun-uws/src/App.hpackages/bun-uws/src/HttpContext.hpackages/bun-uws/src/HttpContextData.hpackages/bun-uws/src/HttpParser.hpackages/bun-uws/src/HttpResponse.hsrc/boringssl_sys/boringssl.rssrc/http/HTTPContext.rssrc/http/HTTPThread.rssrc/http/default_ca.rssrc/http/lib.rssrc/js/builtins/Ipc.tssrc/js/builtins/ProcessObjectInternals.tssrc/js/internal-for-testing.tssrc/js/internal/cluster/child.tssrc/js/internal/cluster/primary.tssrc/js/internal/http.tssrc/js/internal/socket_list.tssrc/js/internal/test/binding.tssrc/js/internal/timers.tssrc/js/internal/tls.tssrc/js/node/_http_agent.tssrc/js/node/_http_server.tssrc/js/node/child_process.tssrc/js/node/net.tssrc/js/node/tls.tssrc/jsc/bindings/BunProcess.cppsrc/jsc/bindings/ErrorCode.tssrc/jsc/bindings/IPC.cppsrc/jsc/bindings/NodeHTTP.cppsrc/jsc/bindings/node/JSNodeHTTPServerSocket.cppsrc/jsc/bindings/node/JSNodeHTTPServerSocketPrototype.cppsrc/jsc/bindings/node/http/JSConnectionsList.cppsrc/runtime/api/bun/h2/connection.rssrc/runtime/api/bun/h2_frame_parser.rssrc/runtime/dispatch_js2native.rssrc/runtime/ipc.rssrc/runtime/ipc_host.rssrc/runtime/node/node_cluster_binding.rssrc/runtime/server/NodeHTTPResponse.rssrc/runtime/server/ServerConfig.rssrc/runtime/server/mod.rssrc/runtime/server/server_body.rssrc/runtime/webcore/fetch/FetchTasklet.rssrc/uws/lib.rssrc/uws_sys/App.rssrc/uws_sys/ListenSocket.rssrc/uws_sys/SocketContext.rssrc/uws_sys/libuwsockets.cpptest/js/bun/http/proxy.test.tstest/js/bun/http/request-smuggling.test.tstest/js/node/child_process/child-process-stdio.test.jstest/js/node/child_process/child_process_ipc_handle.test.tstest/js/node/cluster.test.tstest/js/node/http/node-http-parser.test.tstest/js/node/http/node-http-transfer-encoding.test.tstest/js/node/http/node-http-with-ws.test.tstest/js/node/http/node-http.test.tstest/js/node/http2/node-http2.test.jstest/js/node/net/server.spec.tstest/js/node/test/common/index.jstest/js/node/test/parallel/test-child-process-fork-dgram.jstest/js/node/test/parallel/test-child-process-fork-getconnections.jstest/js/node/test/parallel/test-child-process-fork-net.jstest/js/node/test/parallel/test-child-process-fork-stdio.jstest/js/node/test/parallel/test-child-process-http-socket-leak.jstest/js/node/test/parallel/test-child-process-server-close.jstest/js/node/test/parallel/test-child-process-stdio-merge-stdouts-into-cat.jstest/js/node/test/parallel/test-child-process-stdio-reuse-readable-stdio.jstest/js/node/test/parallel/test-cluster-bind-twice.jstest/js/node/test/parallel/test-cluster-fork-stdio.jstest/js/node/test/parallel/test-cluster-send-handle-twice.jstest/js/node/test/parallel/test-http2-binding.jstest/js/node/test/parallel/test-http2-respond-errors.jstest/js/node/test/parallel/test-https-agent-keylog.jstest/js/node/test/parallel/test-https-timeout-server-2.jstest/js/node/test/parallel/test-listen-fd-cluster.jstest/js/node/test/parallel/test-listen-fd-detached-inherit.jstest/js/node/test/parallel/test-listen-fd-detached.jstest/js/node/test/parallel/test-listen-fd-server.jstest/js/node/test/parallel/test-net-listen-twice.jstest/js/node/test/parallel/test-stdio-pipe-redirect.jstest/js/node/test/parallel/test-tls-client-default-ciphers.jstest/js/node/test/parallel/test-tls-client-mindhsize.jstest/js/node/test/parallel/test-tls-connect-allow-half-open-option.jstest/js/node/test/parallel/test-tls-onread-static-buffer.jstest/js/node/test/parallel/test-tls-server-parent-constructor-options.jstest/js/node/test/parallel/test-tls-set-default-ca-certificates-append-fetch.mjstest/js/node/test/parallel/test-tls-set-default-ca-certificates-reset-fetch.mjstest/js/node/test/parallel/test-tls-set-secure-context.jstest/js/node/test/parallel/test-tls-writewrap-leak.jstest/js/node/test/sequential/test-http2-ping-flood.jstest/js/node/tls/node-tls-cert.test.tstest/js/node/tls/node-tls-connect.test.ts
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dgram.Socket#bind rejects a non-UDP or already adopted descriptor synchronously, before the 'error' listener that closes it can run.
…ertificates - setSecureContext keeps the constructor's requestCert and rejectUnauthorized, as node's does (wrap.js L1367-L1368). - The 'keylog' newListener hook stays registered so a listener added after a later listen() arms that listener socket too, and parked keylog lines are drained on every TLS connection once armed. - setDefaultCACertificates builds a context on the JS thread so a certificate BoringSSL rejects throws to the caller instead of being dropped silently on the HTTP thread. - One rejectUnauthorized normalization in newNativeSecureContext; the second block was unreachable. - Drop a comment left over from a removed guard in notifyListening.
…0s budget its sibling has
…et, share pipe handles with a child on Windows
The https server socket resolves getCipher(), getPeerCertificate() and
getProtocol() through TLSSocket.prototype, which read them off
socket._handle; JSNodeHTTPServerSocket had none, so they returned
undefined / {}. The three now exist on it, implemented over the socket's
SSL* through the same helpers the TCP socket uses.
A net.Socket over a Windows named pipe and a ChildProcess stdin have a
HANDLE, not a CRT fd, so spawn() rejected them as stdio. The socket's fd
getter and FileSink._getFd() now report the HANDLE, Bun.spawn accepts a
number past the fd range as one, and the Windows spawn path wraps it in a
CRT fd for libuv's UV_INHERIT_FD (closed after the spawn), which is what
UV_INHERIT_STREAM does for a pipe. The three Windows entries in
test/expectations.txt are gone.
InternalSocket::fd() reaches WindowsNamedPipe through the opaque handle in bun_uws_sys, which forwards to C symbols the runtime exports; fd() needed one too.
…ocket TLS getters over kHandle tls.setDefaultCACertificates() kept its override in Rust (src/http/default_ca.rs) and each fetch() thread polled a generation counter to rebuild its SSL_CTX, while node:tls injected the same list as `ca` from JS. Node instead resets one process-wide root store in C++ (ResetRootCertStore / root_certs_from_users) that every SecureContext built afterwards reads. Do the same in root_certs.cpp: us_set_default_ca_certs() parses the PEMs, swaps the user root set and drops the shared default-store cache, and us_get_default_ca_store() returns only that set when present. Every new SSL_CTX, node:tls or fetch, picks it up through the existing SSL_CTX_set_cert_store(us_get_shared_default_ca_store()), so the Rust override, the generation poll, the per-thread context swap, the empty-store helper and the JS `ca` injections are gone. A PEM BoringSSL rejects leaves the OpenSSL error queued so the JS caller reports it as node does. https://github.com/nodejs/node/blob/v26.3.0/src/crypto/crypto_context.cc#L1064-L1076 https://github.com/nodejs/node/blob/v26.3.0/src/crypto/crypto_context.cc#L1261-L1310 The https server socket's getCipher()/getPeerCertificate()/getProtocol() resolved through TLSSocket.prototype, which reads socket._handle; the native handle lives in kHandle and _handle stays null (net.Socket's read() and the paused-hold bookkeeping ref/unref _handle, so it must not be the http native object). The four getters now live on the http socket class over kHandle.
us_get_shared_default_ca_store() built the store while holding us_default_ca_mutex, and us_get_default_ca_store() takes the same non-recursive mutex to read the user root set: every first TLS context deadlocked on glibc and threw EDEADLK as a C++ exception on MSVC (build 113219, bun install on every Windows lane). Build first, then publish under the lock, keeping the other thread's store if one landed first.
…an empty trust set
us_internal_ssl_attach only gave a client socket the shared default store
when its SSL_CTX had verify mode NONE, so a context built with
request_cert (fetch's HTTP-thread context, or a SecureContext interned
before tls.setDefaultCACertificates()) kept the store from its creation
and never saw the new defaults. Give every client socket whose context
has no user CA the shared store as it is at attach time. Fixes
test-tls-set-default-ca-certificates-{append,reset}-fetch.mjs.
`ca: []` was folded into "no ca" and so picked up the defaults. Node's
configSecureContext adds no roots for an empty list, so nothing is
trusted. Carry the empty list through SSLConfig and let
us_ssl_ctx_from_options mark the context user-CA with an empty store.
…by object, not by number
A Windows HANDLE is a small integer, so once a socket's or a FileSink's
descriptor is a JS number it cannot be told from a CRT fd: the previous
"past the fd range" check never fired and uv_spawn got EBADF
(test-child-process-server-close, test-stdio-pipe-redirect,
test-child-process-stdio-merge-stdouts-into-cat on both Windows lanes).
On Windows node:child_process now hands Bun.spawn the native object behind
the stream (the socket in `_handle`, or a subprocess stdin's FileSink), the
way node passes the handle wrap, and Stdio::extract reads the descriptor
from it. The Windows spawn path duplicates the HANDLE before wrapping it in
a CRT fd for UV_INHERIT_FD and closes only the duplicate afterwards, so the
owner's handle is left alone. The parent side never exposes a borrowed
HANDLE through Subprocess.stdin/stdout/stderr, since Fd::to_js would take
ownership of it. POSIX keeps passing fd numbers. The FileSink `_getFd()`
HANDLE export and the numeric heuristic are gone; a native readable reports
-1 for a HANDLE.
Shared readable stdio, matching node's getValidStdio/flushStdio:
- only handle-backed streams ('wrap' entries) stop reading in the parent;
an fs.ReadStream keeps flowing.
- a shared net.Socket's native read is stopped too, so the parent no longer
consumes the bytes meant for the child.
- the stream is marked (kIsUsedAsStdio) and the exit-time flush skips it, so
a producer that exits first no longer has its unread output drained by
the parent. The existing fixture resumes the stream explicitly, as node's
test-child-process-stdio-reuse-readable-stdio does.
…the duplex attach and the shared store consistent after a reset
Follow-ups to the per-handshake default CA store:
- The user-CA branch of us_ssl_ctx_build_raw set SSL_VERIFY_PEER (with
FAIL_IF_NO_PEER_CERT under rejectUnauthorized) for any `ca`, which now
includes the empty list. A Bun.serve/Bun.listen server given
`tls: { key, cert, ca: [] }` therefore demanded a client certificate from
every client, and node:https/node:tls servers sent a CertificateRequest
that node only sends for requestCert. The verify mode is now set only for
a non-empty `ca` or requestCert; the empty trust set is unchanged.
- SSLWrapper::init_with_ctx (TLS over a Duplex, a net.Socket with unflushed
writes, Windows named pipes) mirrors us_internal_ssl_attach again: the
current shared default store is attached whenever the context holds no
user CA, regardless of its verify mode, and a context whose own store
holds user CAs (addCACert, pfx CAs, crl) keeps that store.
- us_get_shared_default_ca_store() builds outside its lock and published
the result whenever the cache was still empty, so a
tls.setDefaultCACertificates() landing during the build left a store made
from the previous roots cached. A generation counter bumped by the setter
makes the builder discard and rebuild instead.
- us_internal_ssl_attach uses us_ssl_ctx_has_user_ca(); a tls.ts comment
describing the removed JS-side override is dropped.
…ValidateFd; fix node permalinks shareListenFd dup'd whatever descriptor number the worker named. It now runs the native check the net.Server path already uses (SharedHandle), so a closed fd, a non-socket or a connected socket is answered with EINVAL like node's createServerHandle, and nothing is sent to the worker. Five node links pointed at lib/_tls_wrap.js (an 11-line shim in v26.3.0) or at the wrong crypto_tls.cc line; they now cite lib/internal/tls/wrap.js#L1423, #L1147-L1209 and crypto_tls.cc#L1318. Two cluster tests waited a fixed 100ms/50ms before printing "primary alive"; the IPC round trip that precedes it already orders the bad messages first, so the timers are gone.
…keep the no-channel guard on the http worker hook - Server.prototype._emitCloseIfDrained tested `_connections > 0` where node tests truthiness. After a child reports its sockets closed the count is reset to 0 and 'close' fires; a local socket that closes later takes the count to -1, and `-1 > 0` let 'close' fire a second time. Node returns early there because -1 is truthy. - The worker-side 'listening' hook of http.Server lost its `if (!process.connected) return;` guard, so with NODE_UNIQUE_ID inherited by a process that was never set up as a worker (`bun -e`, no argv[1]) `cluster.worker` is null and listen() threw from the hook. The guard is back as it is on main.
…no mutex us_get_shared_default_ca_store() is back to the once-built base store. A tls.setDefaultCACertificates() set (its certs plus a store built from them) is published with one atomic store and read with one atomic load; a superseded set stays allocated so a reader on another thread never sees freed memory.
A default CA set that a later tls.setDefaultCACertificates() supersedes is left allocated on purpose, so a reader on another thread never sees freed memory. Nothing pointed at it any more, though, so LeakSanitizer reported it (and the certificate stack and store behind it) as a direct leak, which failed ssl-ctx-cache.test.ts and the reset-fetch / reset-https-request node tests on the x64-asan lane. Each set now links to the one it replaced, pushed with a compare-exchange, so every set stays reachable from the published pointer.
…ode test Run against the merge-base's own release build, these already pass, so they do not test anything this branch changes: - node-tls-cert: the four `rejectUnauthorized: null | 0` cases - node-http2: evicting closed streams from maxSessionMemory accounting, malformed extended-CONNECT, the allowHTTP1 status-line check, and delivering a response with an empty or repeated host header - node-http-transfer-encoding: the chunked trailer bound - child_process_ipc_handle: NODE_-prefixed user messages (and its fixtures) - request-smuggling: three of the five Transfer-Encoding cases; the two that fail without the fix stay Covered by a vendored node test this branch also adds: - node-tls-connect "completes the write callback with ECANCELED" (test-tls-writewrap-leak.js) - child-process-stdio "shares a child's stdout descriptor" and its fixture (test-child-process-stdio-reuse-readable-stdio.js; the producer-exits case keeps the stronger assertion) test/common: the `internal/crypto/util` plugin shim is never reached (the require interceptor serves the vendored file first), so index.js is back to main's.
The primary forwarded `{ cmd: "NODE_CLUSTER", ack }` messages that a worker
sends through the public process.send() into the native reply queue
(settleClusterAck). Bun's own worker replies over the native internal
channel, and no vendored node test sends cluster acks externally; only the
two Bun tests written for the forwarder exercised it. The forwarder, the
host function and those tests are gone.
The native ack lookup keeps its one hardening change (an `ack` that is not
an int32 is ignored) and is otherwise back to main's shape.
Duplication and dead code: - internal/test/binding: nghttp2ErrorString() reuses http2.ts's NghttpError table (one entry added there) instead of carrying a second 47-entry table. - socket_body.rs: the three Bun__NodeHTTPServerSocket__* shims come from one macro; tls_socket_functions' get_cipher / get_peer_certificate / get_tls_version take the SSL* directly, so the *_of forwarding wrappers go. - internal/tls: normalizeRejectUnauthorized() was `true` at its only call site; tls.ts uses the literal again. - internal/timers, internal-for-testing: the test shim on main already serves kTimeout and TIMEOUT_MAX. - child_process: normalizedStdio.map(nodeToBun) again; server_body.rs: the is_object() guards repeated what the downcast already rejects; server/mod.rs: an http3-only branch ServerConfig makes unreachable. - Comment-only additions without a node or spec link are removed; a doc comment on us_set_default_ca_certs that described a deleted function goes with them. Fixes: - FileReader::fd() returned the descriptor cached at construction even after the reader closed it at EOF, so a ChildProcess stdout passed as another child's stdio could hand posix_spawn a closed or reused fd. It asks the reader, which reports INVALID once closed. - WindowsNamedPipe::fd() passed INVALID_HANDLE_VALUE (an unopened or closing pipe) to Fd::from_system, which is not INVALID; it maps to Fd::INVALID like FileSink::create_with_pipe does.
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…NODE_UNIQUE_ID node deletes NODE_UNIQUE_ID from a cluster worker's process.env at bootstrap, so a child the worker spawns without an explicit `env` is never mistaken for a worker. Bun deletes it when node:cluster loads, which can be after the worker has already forked a child. That child then saw itself as a worker with an IPC channel, and its http.Server.listen() asked its parent (a worker, not the primary) for the port and waited forever: neither 'listening' nor 'error' fired. spawn()/fork() now leave NODE_UNIQUE_ID out of the child's environment when `options.env` is not given. cluster.fork() passes an explicit env and is unaffected.
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Sep 25, 2026
…'s TLS context (#43015) ### Problem - `tls.Server#setSecureContext()` on a listening server changes nothing. Later handshakes keep the original certificate, key and client-CA store. A CA that the operator removed keeps authorizing client certificates (`authorized=true`). Node applies the new context to the next connection. - Cause: `Listener::listen` (`src/runtime/socket/Listener.rs`) builds the `SSL_CTX` once. `setSecureContext` (`src/js/node/tls.ts`) only reassigned the option fields that `listen()` reads. ### Fix - `setSecureContext()` on a listening server builds an `SSL_CTX` from the staged options. `us_listen_socket_set_default_ssl_ctx()` makes it the default for later accepts. It runs before any field is assigned, so rejected material throws and nothing changes. - First commit: `listen()` no longer registers the default context under the bind hostname in the SNI tree. That entry shadowed an `addContext()` wildcard and would pin the name to the old context. - As in Node, `setSecureContext()` no longer reads `ALPNProtocols` (constructor only). A cluster worker reads its TLS options when the primary answers, so a call made before `'listening'` counts. - Verified on Linux and Windows: `node-tls-server.test.ts` (17 new tests, 11 fail on bun 1.4.2), `node-tls-namedpipes.test.ts`. On Linux: `test/js/node/tls/`, `node-http2.test.js`, `node-net-server.test.ts`. Self-reviewed: one regression found and fixed (Notes). ### Background - An `SSL_CTX` is BoringSSL's TLS configuration: certificate chain, key, CA store, verify mode. Each accepted socket creates its `SSL` from the listen socket's default and holds a reference. - The SNI tree maps server names to other contexts (`addContext()`). A matching ClientHello switches that connection's context. - Session tickets belong to one `SSL_CTX`, so a new context never resumes an old session. <details><summary>Notes</summary> **Repro** (two CAs, server trusts `caA`, then `setSecureContext({ ..., ca: caB })`): ``` bun 1.4.2 / main this branch = node v26.3.0 after clientA (caA): hello clientA authorized=true refused after clientB (caB): refused hello clientB authorized=true resume clientA session: authorized=true reused=true refused ``` The same holds for an `Http2SecureServer`, which is the class `@grpc/grpc-js` reloads credentials on. **Scope.** `tls.Server` and `Http2SecureServer` only. Not covered, on purpose: - `https.Server` and `Bun.serve().reload({ tls })` (#8872). They go through `Bun.serve`, not `Listener.rs`. #42576 and the draft #35535 add `https.Server#setSecureContext()`. No open PR covers `Bun.serve().reload({ tls })`. - `setSecureContext(secureContextInstance)`. Node takes an options object only. node v26.3.0 reads the instance as options with no key and no certificate, and every later handshake fails. Bun 1.4.2 and this branch both leave the listening socket on its context for that form. A context from `tls.createSecureContext()` carries no `requestCert` verify mode, so this PR does not install it. - ALPN on a connection whose SNI selects an `addContext()` or `SNICallback` context is still not negotiated. That is #33253. The wildcard test here asserts the certificate only. **Cluster workers.** A worker's `listen()` completes when the primary answers. `net.ts` built the native TLS options when `listen()` was called, so a `setSecureContext()` or `addContext()` made before `'listening'` was lost. `listenOnPrimaryHandle` now reads them again. For `tls-cluster-set-secure-context-fixture.mjs`, node v26.3.0 prints `default: agent3, viaAddContext: agent2` and bun 1.4.2 prints `agent1` for both. **ALPNProtocols.** This is a behavior change outside a listening server too. `setSecureContext({ ALPNProtocols })` no longer sets the list, also before `listen()`. node v26.3.0 reads the option in the `Server` constructor only (`lib/internal/tls/wrap.js` L1381-L1382). Probe: a server created with `['h2']` and given `['http/1.1']` through `setSecureContext()` negotiates `h2` in node, also after `close()` + `listen()`. Bun 1.4.2 negotiates `http/1.1` after the re-listen. Before this change a listening server reported the new list on `server.ALPNProtocols` while its listener kept the old one. **requestCert clamp.** A server that does not request a client certificate must not reject for one. `net.ts` applied that to the options after `[buntls]` built them. The rule now lives in `[buntls]`, so `listen()`, the cluster reply and the context swap share it. **Related PRs.** The C primitive and its header comment are taken as they are from the drafts #35535 and #41400, so the C hunks merge without a conflict. The Rust wrapper takes an `&OwnedSslCtx` where the drafts take a raw pointer, so safe code cannot pass a dead pointer. Neither draft calls it from `Listener.rs`. #42576 has the same function under the name `us_listen_socket_set_ssl_ctx`. #42050 builds `_sharedCreds` eagerly so that bad material throws before `listen()`. Its notes say it does not rotate the listener. It edits the same function in `tls.ts`, so one of the two needs a rebase. #32435 adds the `tls.Server` methods to `https.Server`. #37896 changes what a cluster TLS worker's `_handle` is. Here a `_handle` that is not a `Listener` is a no-op, and the worker's connections are wrapped in JS from the server's own fields. #33365 was the first version of this fix. A stale-PR sweep closed it. #42355 and #42998 edit `Listener.rs` and `openssl.c` in other places. **Self-review.** A review of the first version of this diff found one regression, and it is fixed. That version moved the bind-hostname SNI entry to the new context. A connection accepted before the swap whose ClientHello arrived after it was switched to the new context, which had no ALPN selector yet, so an h2 server answered `unknownProtocol`. The first commit removes the entry, and two tests pin the case for `tls.Server` and `Http2SecureServer`. The review also asked for h2 coverage, for the `ALPNProtocols` fix, for the requestCert/rejectUnauthorized matrix tests and for the maintainer's symbol name. All are in. **Reference counts.** `secure_ctx` is an `OwnedSslCtx`. The swap is `set_default_ssl_ctx` (C takes its own reference and drops the one on the old default) and `secure_ctx.set(Some(ctx))` (drops the listener's reference on the old one). The test `frees the context it replaces` asserts with `sslCtxLiveCount()` that 20 swaps and one rejected swap add no live `SSL_CTX`, and that `close()` releases the last one. **Windows.** A named-pipe TLS server keeps its context in `WindowsNamedPipeListeningContext.ctx`, now a `JsCell`. Each accept clones the context out of the cell before it can run JS, because `setSecureContext()` can replace the slot. At ddd655c I built the debug binary on Windows x64 and ran `node-tls-namedpipes.test.ts` (7 pass) and the new tests in `node-tls-server.test.ts` (18 pass, the cluster test included). The canary on that machine (1.4.3) fails the named-pipe test: it serves `agent1` after the swap. `bun run rust:check-all` passes for all 12 targets at the same commit. **Test hygiene.** `SNICallback runs even when the requested servername matches the bind hostname` now dials the address `listen()` bound. `localhost` resolves to `::1` and `127.0.0.1` on a dual-stack host, and `connect()` need not pick the one `listen()` did. #35160 makes the same change on its own. </details> <!-- robobun:evidence:begin --> --- **no test proof** · iteration 13 · platform-specific test(s) that do not run on this machine, deferring to CI, which covers all platforms: test/js/node/tls/node-tls-server.test.ts, test/js/node/tls/node-tls-namedpipes.test.ts <!-- robobun:evidence:end --> --------- Co-authored-by: Ciro Spaciari <ciro.spaciari@gmail.com>
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One PR for the net, tls, http and http2 compat work that was spread across seven PRs. It is rebased on current main, and the diff is cut down to behavior changes: