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feat(node): Instrument HTTP/2 servers that use the compat API - #25992

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@timfish timfish commented Nov 2, 2026 •

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Node only publishes http.server.request.start for node:http servers, so node:http2 requests (Fastify http2: true, Hono, srvx with TLS) got no isolation, trace continuation, spans or sessions. On http2.server.stream.start we now wrap stream.session.server's emit like for HTTP/1, and the compat API's 'request' event runs through the existing pipeline. Raw 'stream' API servers (gRPC) are out of scope.

Unlike http.server.request.start, the HTTP/2 channel message has no server, so we read it from stream.session.server. That getter exists on ServerHttp2Session in Node 22 and 24 but is not in the Node docs. If Node removes it, the listener does nothing and HTTP/2 requests are untraced again, as today.

Node only publishes `http.server.request.start` for `node:http` servers, so requests to `node:http2` servers got no isolation scope, trace continuation, server span or session. This covers Fastify with `http2: true`, Hono with an HTTP/2 server, and srvx (Nitro v3) when TLS is set.

On `http2.server.stream.start` (Node 22.17+ and 24.2+), the server integration now wraps the emit of `stream.session.server`, the same as for HTTP/1 servers. The compat API emits `'request'` from inside its `'stream'` listener, so the existing request pipeline runs unchanged. Servers that only use the raw `'stream'` API, such as gRPC servers, stay out of scope.

The request data and span attributes now read the host from `:authority` when there is no `host` header, and drop HTTP/2 pseudo-headers. The server spans no longer read `statusMessage` on HTTP/2 responses, because Node prints an `UnsupportedWarning` for it.
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size-limit report 📦

Compared: 179fbd9 (PR test merge using develop at 2f26678)

Against: 2f26678 (develop) · base run #65292

✅ Baseline matches: this diff contains only this PR's changes.

Path Size % Change Change
@sentry/browser 29.92 kB - -
@sentry/browser - with treeshaking flags 28.08 kB - -
@sentry/browser - with treeshaking flags tracing without tracing 27.97 kB - -
@sentry/browser (incl. Tracing) 52.2 kB - -
@sentry/browser (incl. Tracing + Span Streaming) 52.22 kB - -
@sentry/browser (incl. Tracing, Profiling) 55.18 kB - -
@sentry/browser (incl. Tracing, Replay) 92.52 kB - -
@sentry/browser (incl. Tracing, Replay) - with treeshaking flags 81.2 kB - -
@sentry/browser (incl. Tracing, Replay with Canvas) 97.25 kB - -
@sentry/browser (incl. Tracing, Replay, Feedback) 110.25 kB - -
@sentry/browser (incl. Feedback) 47.52 kB - -
@sentry/browser (incl. sendFeedback) 35.02 kB - -
@sentry/browser (incl. FeedbackAsync) 40.13 kB - -
@sentry/browser (incl. Metrics) 31.48 kB - -
@sentry/browser (incl. Logs) 31.77 kB - -
@sentry/browser (incl. Metrics & Logs) 32.45 kB - -
@sentry/react 31.78 kB - -
@sentry/react (incl. Tracing) 54.62 kB - -
@sentry/vue 38.24 kB - -
@sentry/vue (incl. Tracing) 55.24 kB - -
@sentry/svelte 29.95 kB - -
@sentry/remix (Remix 3 client bundle) 57.83 kB - -
CDN Bundle 31.72 kB - -
CDN Bundle (incl. Tracing) 52.81 kB - -
CDN Bundle (incl. Logs, Metrics) 34.52 kB - -
CDN Bundle (incl. Tracing, Logs, Metrics) 55.32 kB - -
CDN Bundle (incl. Replay, Logs, Metrics) 75.9 kB - -
CDN Bundle (incl. Tracing, Replay) 90.98 kB - -
CDN Bundle (incl. Tracing, Replay, Logs, Metrics) 93.54 kB - -
CDN Bundle (incl. Tracing, Replay, Feedback) 97.11 kB - -
CDN Bundle (incl. Tracing, Replay, Feedback, Logs, Metrics) 99.71 kB - -
CDN Bundle - uncompressed 92.76 kB - -
CDN Bundle (incl. Tracing) - uncompressed 155.77 kB - -
CDN Bundle (incl. Logs, Metrics) - uncompressed 101.29 kB - -
CDN Bundle (incl. Tracing, Logs, Metrics) - uncompressed 163.55 kB - -
CDN Bundle (incl. Replay, Logs, Metrics) - uncompressed 232.85 kB - -
CDN Bundle (incl. Tracing, Replay) - uncompressed 277.46 kB - -
CDN Bundle (incl. Tracing, Replay, Logs, Metrics) - uncompressed 285.23 kB - -
CDN Bundle (incl. Tracing, Replay, Feedback) - uncompressed 291.17 kB - -
CDN Bundle (incl. Tracing, Replay, Feedback, Logs, Metrics) - uncompressed 298.92 kB - -
@sentry/nextjs (client) 57.64 kB - -
@sentry/sveltekit (client) 52.73 kB - -
@sentry/core/server 43.89 kB +0.18% +78 B 🔺
@sentry/core/browser 13.93 kB - -
@sentry/node 156.85 kB +0.09% +131 B 🔺
@sentry/node/import (ESM hook with diagnostics-channel injection) 82.28 kB - -
@sentry/node - without tracing 96.7 kB +0.11% +102 B 🔺
@sentry/node - without channel injection 137.13 kB +0.07% +94 B 🔺
@sentry/aws-serverless 105.38 kB +0.12% +119 B 🔺
@sentry/cloudflare (withSentry) - minified 200.1 kB - -
@sentry/cloudflare (withSentry) 497.1 kB - -
@sentry/nextjs/cloudflare (withSentry) - minified 221.95 kB - -

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Optional E2E tests

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@timfish
timfish marked this pull request as ready for review November 6, 2026 19:26
@timfish
timfish requested review from a team as code owners November 6, 2026 19:26
@timfish
timfish requested review from andreiborza, chargome, msonnb and mydea and removed request for a team November 6, 2026 19:26

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Stale Bugbot comment from a previous run.

Each unordered expect now checks its own trace ID, so the envelopes can arrive in any order. The suite only runs on Node versions that publish the http2.server.stream channels, and the assertions use the @sentry/conventions constants.

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Cursor Bugbot has reviewed your changes and found 1 potential issue.

Fix All in Cursor

❌ Bugbot Autofix is OFF. To automatically fix reported issues with cloud agents, enable autofix in the Cursor dashboard.

Reviewed by Cursor Bugbot for commit 4bff77e. Configure here.

supports() only compared Node major versions, so a suite could not require a feature that was backported in a minor release. nodeMin takes the first version with the feature on each release line.

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