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… speaks TLS http.Server promoted itself to a TLS listener whenever key, cert, ca or pfx was present in its options. Node's http.Server ignores those keys and serves plaintext. https.Server was the same class, so an https server with no key or cert served plaintext instead of a TLS listener that fails handshakes. Split HttpsServer out of Server. Only HttpsServer reads the TLS options, and it always hands a tls config to Bun.serve.
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Updated 3:39 PM PT - Sep 6th, 2026
❌ @robobun, your commit 17f85aa has 2 failures in
🧪 To try this PR locally: bunx bun-pr 41672That installs a local version of the PR into your bun-41672 --bun |
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WalkthroughThe change separates HTTP and HTTPS server construction. HTTPS uses a dedicated ChangesHTTP and HTTPS transport separation
Suggested reviewers: Merge Risk: 🔵 Low · up to This change correctly separates plaintext HTTP from TLS HTTPS behavior, but the TLS helper module's export format remains incompatible with the repository's builtin-module convention and should be corrected before merging. 🚥 Pre-merge checks | ✅ 4✅ Passed checks (4 passed)
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Inline comments:
In `@src/js/node/_http_server.ts`:
- Line 291: Update the PFX handling around processPfxOptions so _pfxExtraCACerts
are passed through the additive native trust-store path rather than merged into
ca. Preserve ca’s replacement semantics and ensure requestCert HTTPS servers
continue trusting system roots and NODE_EXTRA_CA_CERTS alongside PKCS#12 CA
certificates.
In `@test/js/node/http/node-http.test.ts`:
- Line 1477: Add an assertion alongside the existing https.Server check to
verify that server is also an instance of http.Server, preserving the required
HttpsServer inheritance contract.
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I reviewed this PR and didn't find any bugs. Because it changes TLS-mode selection for http.Server/https.Server, deliberately keeps one Node divergence (httpsServer instanceof http.Server), and overlaps with several open PRs touching the same constructor, a human look at the approach is still worthwhile.
What was reviewed:
initServeroption normalization —optionsis always{}beforeserverTlsOptionsruns, sohttps.createServer()/https.createServer(handler)reach the TLS path without a null deref.isTlsSymbolremoval — no remaining references anywhere insrc/.plaintextGetin the tests —closealways fires after a swallowederroronnet.Socket, so it resolves""rather than hanging when the server rejects plaintext.require("internal/tls")is now unconditional insideserverTlsOptions, but that only runs on theisTlsbranch, so plainhttp.createServerstill doesn't load it.
Extended reasoning...
Overview
This PR splits https.Server out of http.Server in src/js/node/_http_server.ts so that TLS mode is decided by which constructor was called rather than sniffed from key/cert/ca/pfx in the options. A new HttpsServer (named "Server", prototype-chained under http.Server via $toClass) always calls the extracted serverTlsOptions() helper, and the plain Server never does. isTlsSymbol is dropped from internal/http.ts, node:https now constructs and exports HttpsServer, and five new tests in test/js/node/http/node-http.test.ts cover plaintext-vs-TLS behavior for both classes plus instanceof discrimination.
Security risks
The change touches TLS server configuration. http.createServer({ key, cert }) will now serve plaintext (matching Node) where Bun previously served TLS — anyone who was relying on Bun's old sniffing behavior gets a silent downgrade to cleartext. That's the correct Node-compat behavior, but it's a security-relevant behavioral change that a maintainer should sign off on. The serverTlsOptions() body is a straight extraction of the previous inline logic (rejectUnauthorized, requestCert, secureOptions, PFX handling all preserved), so no TLS validation was weakened for the https path. initServer normalizes options to {} on every branch before serverTlsOptions(options) is called, so the no-arg / callback-only https.createServer() cases don't hit an undefined property read.
Level of scrutiny
Medium-high. The diff is small and mechanical, but it (a) alters TLS mode selection, (b) intentionally keeps httpsServer instanceof http.Server === true where Node returns false (because Bun has no tls.Server base to chain to here), and (c) is one of at least four open PRs reshaping the same constructor. Those are design and coordination decisions a human should confirm rather than an automated approve.
Other factors
The tests follow the harness conventions (existing file, port: 0, describe.concurrent, try/finally cleanup, it.each matrix). plaintextGet intentionally swallows the socket error and resolves on close, which is safe — net.Socket always emits close after error, so the promise settles with an empty string when the TLS listener resets the plaintext connection. I confirmed isTlsSymbol has no remaining readers under src/. One pre-existing gap not introduced here: new https.Server(...) called directly still bypasses the ALPN defaulting that only https.createServer performs — that was already the case when https.Server === http.Server.
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…ers to internal/tls
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Inline comments:
In `@src/js/internal/tls.ts`:
- Around line 269-270: Change the export in internal/tls from named exports to a
default object containing httpsServerTlsOptions and normalizeServerTls, then
update all internal/tls consumers to load that object via CommonJS-compatible
require calls with string literals and access its members accordingly.
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Status Reproduced on bun 1.4.3 against Node v26.3.0 with a plaintext GET and a TLS GET against each of: Test: CI on 17f85aa (build 111618): the only red test is Open question for the reviewer: #32435, #33539, #41391 and #41641 also make |
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…inish, lifecycle) (#43557) One pull request for the open `node:http` server pull requests. Each root cause is fixed once, and each pull request's tests are carried over. Node is the reference: every scenario was run under Node and under Bun from one script, and the outputs were compared. Fixes #4733 Fixes #18613 Fixes #40350 Fixes #43155 Fixes #43297 Fixes #43513 Fixes #43527 Fixes #25632 Fixes #31301 Fixes #43027 Fixes #43163 Fixes #43342 Fixes #43344 Fixes #43370 Fixes #43490 Fixes #43512 Fixes #43519 Each of these has a repro that is wrong on Bun 1.4.3, right on this branch, and the same as Node. | Issue | Not closed by this PR, because | | --- | --- | | #30501 (msal-node keeps Bun alive at exit) | Probably fixed. The repro copies the teardown of msal-node. The package itself was not run. | | #14430 (yarn: "does not support SSL") | Probably fixed. `response.hasOwnProperty("socket")` is now `true`. yarn itself was not run. | | #39681 (`server.setTimeout` callback after destroy) | Probably fixed. The repro is the deterministic case of #39686. The script in the issue depends on timing and on Windows. | | #43455 (`req.complete`, nine flows) | Partially addressed. Flows 1, 2, 3, 5 and 7 are fixed, and flow 6 was already right. Flow 8 (a socket timeout while the body of an Upgrade request arrives) and flow 9 (a request that `stream.pipeline()` destroyed never reports `complete`) are not. Flow 4 differs only in `_readableState.ended`. | ### What changes for users | Area | Before | After (same as Node) | | --- | --- | --- | | `req.pause()` | The socket stops at once. `req.complete` stays `false` for a small body. | The body is received until the buffer is full. Then the socket stops. | | `res.end()` before the body arrives | `req` gets `'end'` and `'close'` at once, and the body is lost | The request completes when its body really ends | | `res.destroy()` in the middle of a body | `'end'` with bytes missing | `aborted`, then `ECONNRESET` | | `socket.destroy()` inside the `'request'` listener | The body that came with the head is dropped | That body is still delivered | | `'finish'` and the `end()` callback | Fire when `end()` buffers the bytes | Fire when the last bytes have left the socket | | A response that closes the connection | The server half-closes and waits for the peer | The socket closes right behind the FIN | | `'drain'` after a later write flushed the backlog | Lost. `pipe(res)` could hang. | Emitted | | A pipelined request whose body continues after the previous response ends | Body dropped, no response, `server.close()` hangs | Delivered | | CONNECT and Upgrade tunnel sockets | Keep reading when paused or full | Stop reading. `_read()` starts them again. | | A tunnel write that waits for a drain when the client goes away | Its callback, the callbacks of the writes behind it and the `end()` callback never run | They run with an error before `'close'` | | Upgrade request with a body, paused in its listener | The body flows away | The request keeps its body | | `ws` on a reused keep-alive socket | Writes after the Upgrade could stall | Sent | | A raw `socket.write()` behind a response that still drains (the 400 for a bad pipelined request, the reply of a `'clientError'` listener) | Lands in the middle of that response | Sent after it | | `server.close()` | Could report closed while connections were open | Waits for every connection. An idle tunnel does not keep the process alive. | | `closeAllConnections()` on a listening server | Also stops the listener and destroys tunnels and WebSockets | Destroys only the HTTP connections | | `Proxy-Connection: close` (node:http only) | Ignored. The connection stays open. | Ends the connection, like `Connection: close` | | A response larger than 16 KB, also in `Bun.serve` and over TLS | Up to 4 `send()` calls for each chunk. Slower than Node in most cases. | One write for the writes of one tick. 1.1x to 2.7x the requests per second of main, and faster than Node. | | `socket.destroy()` and then `res.end()` in a listener | (this PR, earlier) `req` ended as if it were complete | `'aborted'`, then `ECONNRESET` | | `emit('connection')` or http2 `allowHTTP1`: the response ends while the listener still reads the body | The rest of the body is dropped | The body is complete | | `httpValidation: "relaxed"`, `Content-Length` or `Transfer-Encoding` in trailers | Accepted | `HPE_INVALID_CONTENT_LENGTH`, `HPE_INVALID_TRANSFER_ENCODING` | | `req.complete` inside `'connect'`, and inside `'upgrade'` without a body | `false` | `true` | | `optimizeEmptyRequests`: `socket.parser.incoming` after the response | Keeps the request alive on an idle connection | `null` | | A HEAD or OPTIONS request with `Content-Length` | The body is dropped, and `req.complete` is `true` before it comes | The request has its body | | `res.end(chunk)` after the client went away | `finished` and `writableEnded` stay `false`, no `'prefinish'` | The response ends | | An HTTP/1.0 request with an `Expect` header | `100 Continue`, `'checkContinue'`, `'checkExpectation'` or a 417 | A plain `'request'` | | The idle sweep of `close()` and `closeIdleConnections()` | Could destroy a connection that was still receiving a request, or whose response was still draining | Closes only idle connections | ### Design | Piece | What it is | | --- | --- | | Request body state | `None / Pending / Complete / Aborted / Upgraded / Detached`. Only the last chunk sets `Complete`. One function, `leave_pending`, is the only other way out of `Pending`. | | Read flow control | One path: `push()` returning false stops the socket, `_read()` starts it. Both native pause buffers are removed: no read is copied and replayed. | | "This read is parsed" signal | `notifyWhenReadParsed()` sets a uws state bit. uws delivers a `readParsed` event after the read. It replaces a `setImmediate`. | | Close during a parse | One uws bit defers a close to the end of the current message. | | Response finish | A response is finished when it has ended and the socket has fully drained. | | Idle connection | One rule, `HttpResponse::closeIfIdle()`. A connection is idle when it receives no request (head or body) and no response is in flight, queued or undrained. The sweep of `close()` and `closeIdleConnections()` both use it. | | Idle tunnel | A tunnel at read EOF with nothing left to send. uws reports it to the server through the connection filter (`-3`, `+3`, `-4`). It still counts for `'close'`, but it does not hold the event loop, like a libuv handle in that state. | | Server `'close'` | One native close promise per `listen()`. `close()` records whether its sweep left nothing open. Then a `listen()` in the same tick cannot hold `'close'` back, as in `net.Server._emitCloseIfDrained`. | | Raw socket writes | While uws holds response bytes (its buffer, the zero-copy tail of a `res.write()`, the cork buffer), a raw write goes through `AsyncSocket::write`, the path a 1xx line takes. So the order on the wire is the order of the calls. | | Upgrade verdict | One scanner and one verdict, shared by the parser and the dispatcher. | | llhttp | Updated from 9.3.0 to 9.4.2, as Node v26.5.0 vendors it, plus one local patch (see below). Node v26.5.1 and later vendor 9.4.3. That update is not in this PR. | The parser changes also tighten request framing so that it agrees with llhttp in more cases. There is no new API surface. ### A pause holds from the next read The copy of the rest of a read (`nodeHttpPausedSpill`), its replay from a posted task and the nested parse are removed. Like in Node, the rest of the read that caused a pause is still parsed, and the socket stops at the next read. usockets reads up to 512 KB in one call. libuv reads 64 KB. | One paused, unread request (client sends 64 MB) | Bytes held | | --- | --- | | Node 25.6 | 131,018 | | This pull request | 524,234 | The price is in one case. A client sends 512 KB of small pipelined requests (19,418 of them) and never reads. Each handler answers with its own 64 KB body: | Handler | Runtime | Requests dispatched | RSS | | --- | --- | --- | --- | | Answers at once | Node 26.3 | 2,425 | +177 MB | | Answers at once | main | 41 | +9 MB | | Answers at once | This PR | 2,425 | +171 MB | | Answers one tick later | Node 26.3 | 4,850 | +336 MB | | Answers one tick later | main | 2,426 | +181 MB | | Answers one tick later | This PR | 4,850 | +330 MB | Release builds on Linux x64. This PR now does what Node does. main held fewer responses, mostly for a handler that answers at once. On macOS one read can return all 512 KB. There, Bun 1.4.3 already reached +951 MB for the handler that answers one tick later, and Node reached +1,294 MB. `server.maxRequestsPerSocket` bounds it. ### Performance #### Responses larger than 16 KB are faster, and now faster than Node On main, a response that did not fit the 16 KB uWS cork buffer released the cork. After that, each piece was its own `send()`: the buffered head, the chunk-size line, the data, the `\r\n` and the last chunk. Over TLS, each 2-byte piece was also its own record. Two changes fix that, for `Bun.serve` and for node:http: | Change | Effect | | --- | --- | | A write that does not fit goes out with the cork buffer and its framing in one vectored write | No copy is added. Over TLS, the records of all the pieces share the write batch that one `SSL_write` loop already had. | | The cork buffer holds 128 KB, up from 16 KB. Only a write of 16 KB or less is copied into it, as before. | Several writes in one tick go out in one write, like in Node. A longer write still goes out without a copy. | The bytes on the wire are the same. The vectored write uses `sendmsg()` with the flags that `send()` uses. Write syscalls for one response: | Response | Node 26.3 | main | This PR | | --- | --- | --- | --- | | 4 x `res.write(16 KB)` | 1 | 16 | 1 | | 40 x `res.write(2 KB)` | 1 | 16 | 1 | | `res.end(64 KB)` | 1 | 2 | 1 | | 256 KB file, `.pipe(res)` | 4 | 16 | 5 | Throughput (req/s, the mean of 2 rounds). Node v26.3.0, main `97246d044e`, this PR `fe0ed1fbea`, with the method below: | Case | Node | main | This PR | main / Node | PR / Node | PR / main | | --- | --- | --- | --- | --- | --- | --- | | http, 4 x `res.write(16 KB)` | 17,735 | 6,983 | 19,160 | 0.39x | 1.08x | 2.74x | | https, 4 x `res.write(16 KB)` | 11,720 | 6,110 | 15,510 | 0.52x | 1.32x | 2.54x | | http, 40 x `res.write(2 KB)` | 9,879 | 6,140 | 14,980 | 0.62x | 1.52x | 2.44x | | https, 40 x `res.write(2 KB)` | 6,981 | 5,541 | 11,780 | 0.79x | 1.69x | 2.13x | | http, `res.end(64 KB)` | 18,535 | 16,528 | 19,889 | 0.89x | 1.07x | 1.20x | | http, 256 KB file `.pipe(res)` | 2,684 | 2,375 | 2,719 | 0.88x | 1.01x | 1.15x | | https, `res.end(64 KB)` | 11,894 | 14,586 | 16,426 | 1.23x | 1.38x | 1.13x | | http, GET hello (control) | 55,994 | 70,989 | 71,958 | 1.27x | 1.29x | 1.01x | main was slower than Node in six of these eight cases. This PR is faster than Node in all eight. `Bun.serve`, measured on `a771572a8d`, before the larger cork buffer (req/s, the mean of 2 rounds): | Case | main | PR | Change | | --- | --- | --- | --- | | Direct stream, 4 x 16 KB | 6,826 | 12,479 | +83% | | 64 KB string | 16,944 | 20,145 | +19% | | TLS, 64 KB string | 15,045 | 16,892 | +12% | | hello (control) | 83,957 | 83,137 | -1.0% | These runs are on loopback, where the kernel send buffer is 2.6 MB and the work of the receiver runs inside `send()`. That is the best case for fewer writes. A new connection over a real network takes about 46 KB in its first write on Linux. The rest waits in the socket buffer, as it would after separate writes. #### Small responses are unchanged A small response is already one `recvfrom` and one `sendto` on both builds. `perf` puts 66% of the time of a hello-world server in the kernel, on both builds. CI release builds on Linux x64: main `97246d044e` (the merge base) against this PR `8834cd0787`. Both use the same WebKit. The server runs on one pinned core. `oha` sends 64 connections for 5 s after a 2 s warm-up. There are 2 rounds, and the order of the builds alternates. "Change" compares the means of the two rounds. Framework servers from `bun-perf-tester` (req/s): | Server | main, round 1 | main, round 2 | PR, round 1 | PR, round 2 | Change | | --- | --- | --- | --- | --- | --- | | express | 49,803 | 51,103 | 49,968 | 50,263 | -0.7% | | fastify | 61,214 | 61,105 | 60,705 | 60,668 | -0.8% | | node:http | 70,934 | 71,405 | 73,178 | 71,053 | +1.3% | | elysia | 84,696 | 85,096 | 85,027 | 84,882 | +0.1% | | `Bun.serve` | 89,020 | 89,099 | 88,168 | 88,373 | -0.9% | node:http paths that this PR changes (req/s): | Case | main, round 1 | main, round 2 | PR, round 1 | PR, round 2 | Change | | --- | --- | --- | --- | --- | --- | | GET hello | 70,226 | 70,341 | 70,151 | 72,359 | +1.4% | | POST, 16 KB body | 47,446 | 47,789 | 48,191 | 48,785 | +1.8% | | 64 KB response in four writes | 6,885 | 6,894 | 6,834 | 6,868 | -0.6% | | Pipelined keep-alive, depth 8 | 94,063 | 93,294 | 92,909 | 93,809 | -0.3% | p99 latency (ms), the higher of the two rounds: | Server | main | PR | | --- | --- | --- | | express | 1.94 | 1.91 | | fastify | 1.52 | 1.55 | | node:http | 1.11 | 1.12 | | elysia | 0.98 | 0.96 | | `Bun.serve` | 0.82 | 0.83 | RSS (MB), one pass of 8 s of load: | Server | Build | Start | Under load | 5 s idle | 15 s idle | | --- | --- | --- | --- | --- | --- | | express | main | 39 | 94 | 61 | 57 | | express | PR | 40 | 92 | 60 | 57 | | fastify | main | 41 | 91 | 58 | 55 | | fastify | PR | 41 | 91 | 58 | 55 | | node:http | main | 20 | 64 | 43 | 40 | | node:http | PR | 20 | 65 | 45 | 41 | | elysia | main | 28 | 46 | 36 | 35 | | elysia | PR | 29 | 46 | 37 | 36 | | `Bun.serve` | main | 14 | 30 | 22 | 22 | | `Bun.serve` | PR | 14 | 30 | 22 | 22 | Every change is within 2%. fastify and `Bun.serve` hello are lower in both rounds, by about 1%. `Bun.serve` hello shows the same -1.0% in the control row above, so a small real cost there is possible. The RSS pass ran at the same time as the throughput runs, on other cores. The commits after `8834cd0787` change tests and add one version check to the node:http dispatcher. They were not measured. ### Supersedes | Theme | Pull requests | | --- | --- | | Request body | #43592 #43579 #38196 #43518 #43602 #43408 #43427 #43597 #43555 #43456 #43466 | | Tunnels | #43570 #43485. #43596 is a duplicate of #43570. | | Parser | #43182 #43161 #43326 #43327 #40505 #43363 #42532 #42194 | | Response write | #39386 #43371 #43548 #43499 #43496 #43464 #42008 #43549 | | Response finish | #40351 #43021 #41822 #43473 #42068 #35207 #43425 #43503 | | Lifecycle | #43413 #39686 #43028 #42727 #42622 #42610 #35837 #35839 #37825 #37749 #43376 #35268 | | JS API | #41691 #41738 #38036 #42462 #36527 #39718 #37964. #42947 merged on its own. | The close drain, `resetAndDestroy()`, the pending write callback handling and the response `'close'` ordering come from #42622 and #42727 by @steipete. The diagnosis and the tests for the stalled `ws` writes come from his #42610. Not included: | Pull request | Reason | | --- | --- | | #33061 | main already enforces `headersTimeout` and `requestTimeout` | | #41672 | It makes `http.createServer({ key, cert })` stop serving TLS. That needs a product decision. | | #37543 | A type refactor with no tests and no user-visible change | | #35465 | It makes `http.Server` extend `net.Server`. Only the prototype chains were joined. The `net.Server` constructor never ran, so `_handle` and `_connections` were `undefined`, and `_emitCloseIfDrained()` emitted `'close'` on a listening server. The server is backed by uWS, not `node:net`. | | The `AutoFlusher` removal in #42622 | It makes `flushHeaders()` flush at once. That is a performance change with no relation to the rest. | ### Tests | Check | Result on a debug build (macOS arm64) | Head | | --- | --- | --- | | Every test file that this PR touches (28 files) | 1,866 pass, 2 fail. The 2 failures are `serve.test.ts` "bounds memory when proxying ... to a stalled client". They fail the same way on a debug build of main. | `83af4da4a3`, run before the last commit of main came in | | `test/js/third_party/express` (9 files) and the `body-parser` test | 299 pass, 0 fail | `83af4da4a3`, run before the last commit of main came in | | Node 25.6 against Bun, 32 scenarios from two scripts (event order, framing, lifecycle) | No regression against Bun 1.4.3 | `0ff1a23f61` | | Every vendored Node `test-http-*` and `test-https-*` file, plus the `test-net-*` and `test-tls-*` files for pause, write, end and close | 535 of 537 exit 0. `test-http-agent-keepalive.js` and `test-https-timeout.js` fail on that debug build. Both pass on every CI lane. | `daee05fcfd` (before the rebase) | | The tests that depend on what the kernel takes in one send, on Windows Server 2019 x64 and Windows 11 arm64 | pass | `3eef223328` (x64), `a29289bcc1` (arm64) | | CI build 120191 (Linux, macOS and Windows, release and ASAN) | every lane passed | `daee05fcfd` (before the rebase) | Each new test fails on Bun 1.4.3, or on the commit before its fix for a fault that this branch introduced. The two tests over the limit are `node-http-connect.test.ts` ("tests should run on bun") and `node-http-syscall-fault.test.ts` ("racing a queued drain"). Each starts a debug subprocess that needs more than 5 s on this machine. Both pass on CI. ### Changes in the last push The branch is rebased on main (`daee05fcfd` was the head before). It is now linear. Four regressions against main, each with a test that fails without its fix: | Case | main | Before this push | Now (same as Node) | | --- | --- | --- | --- | | `emit('connection')` or http2 `allowHTTP1`: `res.end()` on a request that nobody reads | `'end'`, `'close'` | No events | `'end'`, `'close'` | | The same server, an unread 32 MB body | 0 bytes held | 32 MB held | 0 bytes held | | A NUL in a header value with `httpValidation: "relaxed"` (client, `HTTPParser`, `emit('connection')` server) | Accepted | The process spins forever | `HPE_INVALID_HEADER_TOKEN` | | `Connection: close`, body in the same read as the head, a 20 KB response before the body is read | `'end'` with an empty body | No events on `req` | `'end'` with the body, `'close'` | | An empty line on an idle keep-alive connection, then `server.close()` | 0 s | About 6 s | 0 s | | Fix | Where | | --- | --- | | The finish listener of a fallback connection dumps an unread request, like Node's `resOnFinish` | `http1_server_fallback.ts` | | llhttp patch: `llhttp__internal__c_test_lenient_flags_20` is false for a NUL. The relaxed state does not consume a NUL, and the next state sent it back there. 9.4.3 has the same loop. | `llhttp.c`, noted in its `README.md` | | A node:http socket that `onData` is parsing gets the close gate of `onData`, also when a large write released the cork | `HttpResponse.h` `uncorkCompletedResponse()` | | A read that starts no message leaves an idle connection idle | `HttpContext.h` `onData` | The open review threads are fixed in `8834cd0787`: `closeAllConnections()`, `Proxy-Connection: close`, five comments cut to one line, and the test of two overlapping listeners, which now waits on events. With the generation gate in `emitCloseServer` removed, that test fails in both cases. `AsyncSocketData` keeps its bools together, which takes it from 56 to 48 bytes per socket. `http.Server` no longer extends `net.Server` (see "Not included"). The special case for it in `Ipc.ts` is gone too. `child.send(msg, httpServer)` still throws `ERR_INVALID_HANDLE_TYPE`, and its test stays. <details><summary>Changes since the first revision (2988a61)</summary> Merged with main at `c8e1f6fa5b`. The one conflict was #43708 (`req.socket` emits `'end'` and `'error'`). Its state bit `HTTP_NODE_PEER_ENDED` moved to bit 22, because bit 19 is `HTTP_NODE_NOTIFY_READ_PARSED` here. Its 15 tests run in `node-http-server-abort-events.test.ts` next to the tests of this branch (103 pass). CI on `2988a610c` had ten red tests from four causes. They are fixed: - `ed882e5e99`: `write()` to a response without a body (HEAD, 204) does not wait for unsent bytes. - `811f817704`: an idle tunnel does not hold the event loop after `server.close()`. Four vendored Node tests timed out on every platform. - `0697deec11`, `d428824c08`, `7aec062d14`: the write callback tests use a body that backs up a loopback socket, and accept what Winsock does. - `c7af1c1615`: two tests from main asserted the old `close()` contract. Review findings, each reproduced against Node v26.3.0 and fixed with a test that fails without the fix: - `d4d2b783ea`, `2cc79939bb`, `45141abca9`, `9a63dbc470`, `80a23a1822`: the idle rule. A keep-alive connection is idle again when its body ends after its response. A connection that owes a queued pipelined response, that still receives a request head or body, or whose response still drains is not idle. - `87d8904aa3`, `7eca4f7806`: `close(cb)` followed by `listen()` in the same tick reports `'close'`, also for an https server whose only connection was idle. - `3fd7b25382`: a paused pipelined request behind a response that still drains stops the connection. The first revision read 512 MiB of 512 MiB into memory. - `2d1a5e2d8d`, `33e4683a8a`, `539cb41eb9`, `197c7dfc29`, `0490e3540b`: raw socket writes stay behind every unsent response byte. The cases were a CONNECT pipelined behind a response that still drains (its `200` landed at offset 2.6 MB of a 64 MiB body), a zero-length tunnel write (it hung the tunnel), the 400 replies above, the zero-copy tail of a large `res.write()`, the cork buffer, and Windows 11, where the kernel takes the whole response and refuses the next send. - `0abd39c133`: an upgrade from the request's `'end'` listener keeps the body bytes out of the WebSocket. The connection closed with 1006 right after the 101. - `5aafc61aa6`: the callback of a small `res.write()` that the kernel refuses at the uncork runs on the drain. Reproduced on Windows 11 only. - `a29289bcc1`: a tunnel write that waits for a drain settles its callbacks when the connection closes. Known differences from Node that this PR leaves: - A handler that calls `res.end()` and then `server.close()` closes its keep-alive connection at once. Node waits for the `keepAliveTimeout`. - A pipelined Upgrade behind a response that still drains is served as a plain request. - An `end()` on a tunnel with no write pending, while the response before the CONNECT still drains, closes both directions after the flush. Node half-closes. - A raw `req.socket.write(big)` and `req.socket.end()` with no `res.end()` sends every byte but no FIN. main loses bytes here. - A CONNECT socket that is given back with `server.emit('connection', socket)` answers only the first of several pipelined requests. main answers none. - A large write from an `'upgrade'` listener stalls while the body of that Upgrade request is still pending. A second `listen()` on a listening server does not throw. Both are the same on main. - A tunnel write that fails because the client went away fails its callbacks but emits no `'error'`. Node emits `ECONNRESET`. A new `'error'` could end a process that has no listener for it. </details> <!-- robobun:evidence:begin --> --- **no test proof** · iteration 8 · platform-specific test(s) that do not run on this machine, deferring to CI, which covers all platforms: test/js/web/fetch/fetch.stream.test.ts, test/js/node/url/url.test.ts, test/js/node/tls/tls-syscall-fault.test.ts, test/js/node/net/node-net-server.test.ts, test/js/node/http/node-http.test.ts, test/js/node/http/node-http-syscall-fault.test.ts, test/js/node/http/node-http-server-close-drain.test.ts, test/js/node/http/node-http-connect.test.ts, test/js/node/http/node-http-backpressure.test.ts, test/js/node/child_process/child_process_ipc_handle.test.ts, test/js/bun/http/serve.test.ts, test/js/bun/http/serve-syscall-fault.test.ts, test/js/bun/http/bun-server.test.ts <!-- robobun:evidence:end --> --------- Co-authored-by: Jarred Sumner <jarred@jarredsumner.com> Co-authored-by: autofix-ci[bot] <114827586+autofix-ci[bot]@users.noreply.github.com>
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Problem
http.createServer({ key, cert })on plainnode:httpbecomes a TLS listener. Plaintext clients getECONNRESET. Node'shttp.Serverignoreskey,cert,caandpfxand serves plaintext.{ ca }alone gives a port that refuses both plaintext and TLS.https.createServer()andhttps.createServer({})serve plaintext HTTP. Node gives a TLS listener whose handshakes fail.http.Serverconstructor insrc/js/node/_http_server.ts:291-324on main. It set the TLS config whenever one of those keys was present, andhttps.Serverwas the same function (https.ts:Server: http.Server), so neither class could opt out of that rule.Fix
http.Serverno longer reads any TLS option.https.tsdefines its ownServer: it callshttp.Server, then always sets the TLS config fromhttpsServerTlsOptions(options), even with no key or cert.http.Serverconstructor moved as is tointernal/tls.ts(httpsServerTlsOptions, plusnormalizeServerTls).isTlsSymbolhad no other reader and is removed. The Bun-onlyserver.listen({ tls })path onhttp.Serveris unchanged.https.Server.prototypechains tohttp.Server.prototype, sohttpsServer instanceof http.Serverstaystrue(Node saysfalse, because itshttps.Serverextendstls.Server).http.createServer() instanceof https.Serveris nowfalse, as in Node.test/js/node/http/node-http.test.ts(describehttp.Server vs https.Server TLS mode, 5 cases, 4 fail on bun 1.4.3). Also thenode-tls-*suites,node-https-checkServerIdentity,node-http-agent-tls-optionsand the Nodetest-https-*.jsparallel tests.Background
http.Serverin bun is a JS class overBun.serve.listen()passesthis[tlsSymbol]as thetlsoption. Anullthere means a plaintext listener.SSLConfig::from_js(src/runtime/socket/SSLConfig.rs) returns a config when any recognised member is set.normalizeServerTlsalways setsrequestCertandrejectUnauthorized, so a config with no key or cert still makes the listener speak TLS. A client then gets a handshake failure, which is what Node'stls.Serverdoes without a certificate.Notes
Related open PRs that also make
https.Servera distinct class: #32435 (addsaddContextand the othertls.Servermethods, 17 files), #33539 (https fails closed without key or cert), #41391 (class identity only), #41641 (more TLS options). All of them keep the rule thathttp.Serverspeaks TLS whenkeyorcertis present. #32435 has a test that asserts it. This PR changes that rule to match Node, so whichever lands second needs a small rebase in the constructor. If #32435 lands first, this PR reduces to dropping the key/cert arm of its constructor gate plus the test flip. Related issues: #31125, #12157.The first revision of this PR defined an
HttpsServerinside_http_server.tsand exported it fromnode:_http_server. Review pointed out that this adds a non-Node export to a publicnode:module, so the class now lives inhttps.tsand the shared helpers ininternal/tls.Probe results, plaintext GET and TLS GET against each server:
http {key,cert}http {ca}https {key,cert}/new https.Server(...)/https.Server(...)https {}/ noneObject.keys(require("_http_server"))isServer, ServerResponse, kConnectionsCheckingInterval, unchanged from main.Pre-existing failures seen while running the suites, unrelated to this diff:
test-https-timeout.jshangs on a debug build of main as well (a 10 ms request timeout never fires).node-tls-server.test.ts"SNICallback runs even when the requested servername matches the bind hostname" fails withECONNREFUSEDon the released bun too in this container (localhost resolution).