Changelog

denoland/deno · · 32 commits

Node compat gets big HTTP/TLS/DNS work

Major Node.js compatibility fixes landed across http2, TLS, DNS, cluster, and IPC, plus CI changes and test enables.

bartlomieju divybot nathanwhitbot nathanwhit lunadogbot

http2 compatibility gets a major overhaul (divybot446377e, divybotf2d875d, divybotc91c783, divybot3a187c1, divybotcb2e06e) Several http2 paths were fixed or added: createConnection now accepts JS Duplexes, custom settings and SETTINGS ACKs are tracked, GOAWAY is flushed before socket teardown, and pending PING callbacks are canceled on destroy. These changes unblock a cluster of Node compat tests and bring Deno closer to Node's http2 session semantics.

TLS behavior now matches Node more closely (bartlomieju9f06363, bartlomieju134f7d7, bartlomieju1287800, nathanwhitbotb7a3fff) TLS socket handling was tightened around handshake/error ordering, app-data leakage before identity verification, timeout internals, and API naming. Together these fixes improve Node compat for HTTPS/TLS flows and enable several previously failing tests.

DNS lookup/reverse support improved (bartlomieju8e5e2ec, bartlomiejua643fb7) dns.reverse()/dnsPromises.reverse() were implemented, dns.lookup({ family: 6 }) was fixed to honor the family hint, and SRV targets now have trailing dots stripped. This closes a notable gap in Node's DNS surface area and unlocks more compat coverage.

Cluster support is now wired up (divybot0ad03b5) node:cluster can now detect worker state and fork workers via Node-style environment plumbing. This is a substantial compatibility addition because it moves cluster from a stubbed path to a functional implementation for real Node workloads.

IPC writes were backed out and reworked (bartlomieju51f7f57, bartlomiejueeda732) The fully synchronous IPC write approach was reverted because it could stall the event loop on large or slow messages. The repo then restored the sync-write ops, signaling the team is iterating on a safer hybrid design rather than shipping the earlier behavior.

util.styleText() now matches Node output and validation (nathanwhitbot7c77e1b) Style nesting order, validateStream behavior, and the 'none' identity case were aligned with Node. This affects observable formatting output and error behavior, so it's a meaningful compat fix for tooling and console-like consumers.

Other misc changes

  • CI now shards node_compat into 3 jobs and several flaky/passing compat tests were enabled or ignored.
  • spawnSync monkey-patching and killSignal handling were fixed.
  • Readable.toWeb() cancel behavior, rmdir({ recursive }), AbortSignal.addEventListener, proto-pollution guards, and perf_hooks.timerify received smaller compat fixes.
  • Minor internal/test updates across webidl, task matching, and node compat config.