perry-ext-http: node:http/https/http2 servers on turnloop only; drop hyper + hyper-util (tokio lane A2) - #11144
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September 23, 2026 18:06
…per + hyper-util WIP: the hyper accept loops (HTTP/1.1, HTTPS, HTTP/2), the raw-upgrade peeler, the tokio-tungstenite attached-WebSocket path and the SCHED_RR fd-inject loop are gone. A thread that does not own its agent's loop posts listen() to the owner; SCHED_RR descriptors are adopted onto the loop via turnloop_net::adopt_stream.
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Navigate logical layers of code changes, visualize relationships, and explore their blast radius. 📝 WalkthroughWalkthroughHTTP, HTTPS, and HTTP/2 server paths now bind and serve through turnloop, including owner-thread posting and cluster-worker descriptor adoption. The change removes Hyper/Tokio server fallbacks and channel-based response delivery, and updates request, upgrade, TLS, and dependency tracking code. ChangesHTTP server transport migration
Estimated code review effort: 4 (Complex) | ~60 minutes Sequence Diagram(s)sequenceDiagram
participant ServerListen
participant AgentPost
participant TurnloopOwner
participant TurnloopListener
participant MainThreadPump
ServerListen->>AgentPost: post bind when caller does not own agent loop
AgentPost->>TurnloopOwner: run listen operation
TurnloopOwner->>TurnloopListener: bind listener
TurnloopListener->>MainThreadPump: queue listening event
MainThreadPump->>ServerListen: emit listening event
Merge Risk: 🟡 Moderate · up to This change moves HTTP, HTTPS, and HTTP/2 servers onto the new connection layer, but several listening and streaming paths regress. An HTTP/2 server listening on an occupied port reports that it is listening and runs the listen callback. An HTTPS bind failure never emits 🚥 Pre-merge checks | ✅ 5✅ Passed checks (5 passed)
✨ Finishing Touches📝 Generate docstrings
🧪 Generate unit tests (beta)
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Ready for a train (tokio lane A2): removes perry-ext-http→hyper/hyper-util, taking the tokio inventory from 13 to 11 edges. It touches perry-ext-http only, not root Cargo.toml. The gap A/B over 73 tests and the node-suite http/https/http2/cluster run (204 tests) give identical per-test results on both arms, and |
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Inline comments:
In `@crates/perry-ext-http/src/server/http2_server.rs`:
- Around line 543-546: Update both `try_listen_on_turnloop` checks in
`listen_http2_server` to treat `Some` with id 0 as a failed bind, so it does not
queue the listening emit or set `listening` true; only a nonzero id indicates
success. Also avoid reporting `None` as unavailable TLS configuration when it
can mean `err.no_loop`.
In `@crates/perry-ext-http/src/server/https_server.rs`:
- Around line 290-412: When `turnloop_serve::listen` fails,
`turnloop_https_listen` logs the bind error but does not queue it for HTTPS
error listeners. In its `Err(err)` branch, call `queue_listen_error_parts` with
the server handle, host, port, and error details before returning false.
In `@crates/perry-ext-http/src/server/response.rs`:
- Around line 927-929: Update stream_write_with_cb and turnloop_route::send_body
to distinguish an unavailable stream from a successfully queued HTTP/2 write
that hit backpressure; keep the latter on the streaming path and set needs_drain
so the write callback is recorded. Update take_drain_listeners_if_ready to
consider the HTTP/2 stream outbox watermark alongside the transport queue.
In `@crates/perry-ext-http/src/server/server.rs`:
- Around line 1252-1254: Update fire_upgrade_listeners to resolve HttpsServer
handles as well as HttpServer handles, so HTTPS upgrades fire their listeners
and release adopted upgrade handles; preserve the shared TURNLOOP_UPGRADES drain
flow.
In `@crates/perry-ext-http/src/server/turnloop_serve/mod.rs`:
- Around line 179-200: In adopt_connection, release the id reserved by next_id()
with perry_ffi::free_handle_id(id) when tl::adopt_stream fails, before
returning; leave the existing socket ownership and early-return behavior
unchanged.
- Around line 147-160: Update post_to_owner to distinguish permanent NoRoute
rejection from exhausted transient retries; return a distinct result for
exhaustion rather than treating it as no loop. Keep retries bounded and use
backoff, and update the HTTP and HTTP/2 listen paths to map only NoRoute to
NO_LOOP_CODE.
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⛔ Files ignored due to path filters (1)
Cargo.lockis excluded by!**/*.lock
📒 Files selected for processing (37)
changelog.d/11144-ext-http-server-turnloop-only.mdcrates/perry-ext-http/Cargo.tomlcrates/perry-ext-http/src/server/cluster_bind.rscrates/perry-ext-http/src/server/handle_dispatch.rscrates/perry-ext-http/src/server/http2_server.rscrates/perry-ext-http/src/server/http2_server/controls.rscrates/perry-ext-http/src/server/http2_server/dispatch.rscrates/perry-ext-http/src/server/http2_server/pump.rscrates/perry-ext-http/src/server/http2_server/session.rscrates/perry-ext-http/src/server/http2_server/turnloop_glue.rscrates/perry-ext-http/src/server/http2_server/turnloop_listen.rscrates/perry-ext-http/src/server/https_server.rscrates/perry-ext-http/src/server/mod.rscrates/perry-ext-http/src/server/raw_upgrade.rscrates/perry-ext-http/src/server/request.rscrates/perry-ext-http/src/server/response.rscrates/perry-ext-http/src/server/response_end.rscrates/perry-ext-http/src/server/response_fast.rscrates/perry-ext-http/src/server/response_tests.rscrates/perry-ext-http/src/server/response_turnloop.rscrates/perry-ext-http/src/server/server.rscrates/perry-ext-http/src/server/server/deferred_events.rscrates/perry-ext-http/src/server/server/in_flight.rscrates/perry-ext-http/src/server/server/io_activity.rscrates/perry-ext-http/src/server/server/turnloop_listen.rscrates/perry-ext-http/src/server/server/websocket_upgrade.rscrates/perry-ext-http/src/server/tls.rscrates/perry-ext-http/src/server/turnloop_h2/mod.rscrates/perry-ext-http/src/server/turnloop_h2/stream.rscrates/perry-ext-http/src/server/turnloop_route.rscrates/perry-ext-http/src/server/turnloop_serve/conn.rscrates/perry-ext-http/src/server/turnloop_serve/mod.rscrates/perry-ext-http/src/server/turnloop_serve/wire.rscrates/perry-ext-http/src/server/upgrade.rscrates/perry-ext-http/src/tls_client.rsscripts/gc_runtime_root_holders.jsonscripts/tokio_inventory.json
💤 Files with no reviewable changes (9)
- crates/perry-ext-http/src/server/http2_server/turnloop_glue.rs
- crates/perry-ext-http/src/server/request.rs
- crates/perry-ext-http/src/server/turnloop_serve/wire.rs
- scripts/gc_runtime_root_holders.json
- crates/perry-ext-http/src/server/server/websocket_upgrade.rs
- crates/perry-ext-http/src/server/raw_upgrade.rs
- crates/perry-ext-http/src/tls_client.rs
- crates/perry-ext-http/src/server/server/io_activity.rs
- crates/perry-ext-http/src/server/http2_server/session.rs
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…ing; distinguish busy postbox from no loop Addresses CodeRabbit review on #11144: - http2: a bind failure (Some((0, ..))) was treated as success and fired listening + the listen(cb) callback; https only printed to stderr. Both now queue the server error event, like http.Server.listen. - post_to_owner returns Accepted / NoRoute / Busy; only NoRoute is ENOTSUP, an exhausted retry budget is EAGAIN. Retries back off after 16 yields. - free the reserved id when adopt_stream refuses a SCHED_RR descriptor. - test_gap_listen_eaddrinuse.ts: fails on c1f36c2, matches Node 26.5.1.
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…qwest and tokio-rustls client_turnloop (src/client_turnloop/) now carries every shape the reqwest path did plus the three raw tokio TcpStream bypasses: request bodies, options.timeout / req.setTimeout as tl::timer_arm deadlines, https via perry_tls_session::TlsSession with the Node verifier tls_client builds, Agent keep-alive with physical reuse (release only after End and Decoder::reusable), NODE_USE_ENV_PROXY (absolute-form / CONNECT tunnel), TE: trailers, Expect: 100-continue and Connection: Upgrade (101 hands the handle to net with turnloop_net::transfer). A thread that does not own the loop posts to the owner; no loop at all reports ENOTSUP. reqwest and tokio-rustls leave perry-ext-http; with #11144 already landed, reqwest, hyper, hyper-util, hyper-rustls, h2, tower and tower-http leave Cargo.lock. tokio inventory: 11 -> 9 edges, 14 -> 7 lockfile packages.
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Tokio removal, lane A part 2: this moves the
node:http/node:https/node:http2server onto turnloop only and deletes theperry-ext-http → hyperandperry-ext-http → hyper-utiledges. Group A inscripts/tokio_inventory.jsonis now closed. It builds on #11105 (perry-ext-net off tokio,turnloop_net::adopt_stream), which landed in train 266.What changed
Since P5,
turnloop_serve/turnloop_h2have served every server. Hyper was only a fallback, and each of its cases now goes to turnloop:listen()is posted to the owner thread throughperry_ffi::agent_post(turnloop_serve::post_to_owner). This is the same route as perry-ext-net'sturnloop_io::on_loop. Thelisten(cb)callback is registered and rooted right away. The'listening'emit is armed only when the owner's bind succeeds, and the callback is withdrawn if the bind fails. If there is no loop at all (Loop::newfailed), the server emits'error'withlisten ENOTSUP.spawn_rr_inject_loopserved the primary's fds with hyperturnloop_net::adopt_stream.turnloop_serve::adopt_connectionthen starts it through the samestart_connectiona turnloop-accepted connection uses: same'connection'event, codec, idle deadline and response path.server.close()stops the bridge.Also deleted:
raw_upgrade.rs,websocket_upgrade.rs(tokio-tungstenite) andio_activity.rsCONNECTIONSregistryServerResponse::{response_tx, stream_tx, stream_in_flight, connection_close, transport_destroyed},HttpServer::{shutdown_tx, request_rx, upgrade_rx},Http2StreamHandle::response_tx,ShapeBody::{Stream, Eof}. The inventory'stokiorow called this "a separable second step"; it is done here too.HyperResponseShapeis renamed toResponseShapeand its body is now a plainVec<u8>.src/server/contains notokio::code.perry-ext-httpalso dropshttp-body-utilandsocket2. Diff: 37 files, +825 / −3566. RootCargo.tomlis untouched;Cargo.lockonly loses entries.Behaviour that leaves with the fallback. The default turnloop HTTPS path never had these, so they were only reachable on the declined path:
https.Server'keylog'and'tlsClientError'eventsreq.socket.servernameand the peer-cert CN forwarded by the in-process client'sx-perry-internal-tls-*headers. The server-side consumerinternal_https_token_for_portis deleted; the client still sends the headers.Porting these onto perry-ext-net's turnloop TLS session is follow-up work. It needs an SNI / failure accessor on
turnloop_tls_io.One more edge-case difference:
http2.createSecureServerwith unusable TLS material used to mark itselflisteningbefore refusing on the hyper path. It now refuses without marking itself listening.Inventory
python3 scripts/tokio_inventory.py --update:perry-ext-http→hyper,perry-ext-http→hyper-util.perry-ext-http→tokio(D) and→tokio-rustls(C) rows are reworded. Only the node:http/https client (plan C) holds them now; the server reaches tokio on no thread.scripts/gc_runtime_root_holders.jsondrops 3 exemptions whose holders are deleted:PENDING_TLS_CLIENT_ERRORS,PENDING_TLS_KEYLOGS,CONNECTIONS.Validation
All runs are on perrymaster (Linux), with Node 26.5.1 from
/opt/node-v26.5.1-linux-x64.Gap A/B. Base is train 266 head
b75e6a6eb; the branch was built the same way. The runner isPERRY_SKIP_BUILD=1 PERRY_NO_AUTO_OPTIMIZE=1 PERRY_BIN=… PERRY_RUNTIME_DIR=… ./run_parity_tests.sh --filter X. The harness re-enables auto-optimize for ext-routed fixtures, so the rebuiltperry-ext-httpwrapper is what gets linked.ls test-files | grep -iE "http|tls|cluster|upgrade|websocket|_ws_|keep_?alive|pipelin|trailer|expect_continue|checkcontinue|chunked".cluster_4962(the SCHED_RR descriptor-passing e2e) passes on the branch. That is the pathadopt_connectionnow serves.node-suite A/B for
http,https,http2,cluster, per test:Checking that the A/B isn't vacuous.
nmon the linkedlibperry_ext_http.a:hyper::serversymbolsspawn_rr_inject_loopturnloop_serve::post_to_owneradopt_connectionAfter rebasing onto main
3ede2abb7(the only overlapping change on main wasCargo.lock): I rebuilt and re-rancluster_4962,test_gap_turnloop_http_serverandtest_gap_turnloop_https_server. All three pass.cargo metadata --lockedis OK.Unit tests,
cargo test --release -p perry-ext-http: 145 pass, 1 fail. The failure istls_client::tests::needs_custom_client_logic, which also fails on the base (base: 151 pass, same failure). Test-list differences:listen_reaches_the_loop_on_every_route(asserts whichever of owned / posted / ENOTSUP route the harness thread lands on),a_withdrawn_listen_callback_leaves_nothing_behind,no_loop_message_names_the_operation.nodelay_tests::*(2),raw_upgrade::tests::*(2),io_activity::tests::*(3),status_code_const_matches_from_u16,keylog_records_are_nss_formatted_and_drained_once.Windows:
cargo xwin check -p perry-ext-http -p perry-runtime -p perry-ffi --target x86_64-pc-windows-msvcpasses in both arms. I used cargo-xwin v0.23.0 with LLVM 22 clang-cl / lld-link (a private install, not CI's). perry-ext-http shows the same 3 pre-existingcluster_binddead-code warnings in both arms.Lint:
cargo fmt --all -- --check,check_file_size.sh,gc_runtime_root_holders.pyandtokio_inventory.py(plus--self-test) all pass.SKIP_COMPILE_GATES=1 scripts/run_lint_gates.sh: 87 of 88 script gates pass; the compile tier was not run. The one failure is the harness's own cargo-xwin step (cargo xwin check -p perry-runtime -p perry-stdlib), which isn't installed on the host; I ran the targeted xwin check above instead.Not run
perry-nativeUI thread or a host pump thread. Only the unit test covers it, and it asserts whichever route its thread gets.Loop::newfails.ResponseShapebody (Vec<u8>instead of an enum), so I didn't measure.Summary by CodeRabbit
New Features
100 Continue.Bug Fixes