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feat(aws-serverless): Keep the Lambda extension enabled when http_proxy is set - #26360

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@msonnb

@msonnb msonnb commented Nov 13, 2026 •

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What

Lambda layer users with http_proxy set now send events through the Lambda extension by default, instead of the SDK falling back to sending directly. The extension stays off when transportOptions sets proxy or caCerts. makeNodeTransport gets a proxy: false option that ignores proxy env vars.

Why

With #26359 the extension applies the proxy itself, so disabling it whenever http_proxy is set is no longer needed. The SDK's own request to localhost:9000 must skip the proxy; proxy: false does that only for the extension tunnel, instead of exempting loopback for every Node user. transportOptions.proxy/caCerts keep the old path because the extension only reads env vars and would drop them. This changes the default delivery path for proxied layer users; they can opt out with useLayerExtension: false or SENTRY_LAYER_EXTENSION=false.

…xy is set

The extension now forwards envelopes through the proxy itself, so the SDK no
longer falls back to sending directly when `http_proxy` is set. The SDK's own
request to the extension skips the proxy via a new `proxy: false` transport
option. The extension stays off when `transportOptions` sets a proxy or CA
certificates, since it can't apply those.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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size-limit report 📦

Compared: 8ffdddf (PR test merge using develop at ab12f20)

Against: 075093d (develop) · base run #66039

⚠️ Baseline mismatch: 2 develop commit(s) in the PR build are missing from the baseline; 4 develop commit(s) in the baseline are missing from the PR build. Their size changes also affect this comparison. Compare commits. Rebase your PR onto the latest develop to compare against an up-to-date baseline.

Path Size % Change Change
@sentry/browser 30.1 kB - -
@sentry/browser - with treeshaking flags 28.3 kB - -
@sentry/browser - with treeshaking flags tracing without tracing 28.2 kB - -
@sentry/browser (incl. Tracing) 52.28 kB - -
@sentry/browser (incl. Tracing + Span Streaming) 52.29 kB - -
@sentry/browser (incl. Tracing, Profiling) 55.25 kB - -
@sentry/browser (incl. Tracing, Replay) 92.82 kB - -
@sentry/browser (incl. Tracing, Replay) - with treeshaking flags 81.6 kB - -
@sentry/browser (incl. Tracing, Replay with Canvas) 97.21 kB - -
@sentry/browser (incl. Tracing, Replay, Feedback) 110.6 kB +0.01% +1 B 🔺
@sentry/browser (incl. Feedback) 47.73 kB - -
@sentry/browser (incl. sendFeedback) 30.69 kB - -
@sentry/browser (incl. FeedbackAsync) 35.69 kB - -
@sentry/browser (incl. Metrics) 31.43 kB - -
@sentry/browser (incl. Logs) 31.71 kB - -
@sentry/browser (incl. Metrics & Logs) 32.37 kB - -
@sentry/react 32.11 kB - -
@sentry/react (incl. Tracing) 54.95 kB - -
@sentry/vue 38.3 kB - -
@sentry/vue (incl. Tracing) 55.24 kB - -
@sentry/svelte 30.12 kB - -
@sentry/remix (Remix 3 client bundle) 58.06 kB - -
CDN Bundle 31.87 kB - -
CDN Bundle (incl. Tracing) 52.7 kB - -
CDN Bundle (incl. Logs, Metrics) 34.67 kB - -
CDN Bundle (incl. Tracing, Logs, Metrics) 55.26 kB - -
CDN Bundle (incl. Replay, Logs, Metrics) 75.7 kB - -
CDN Bundle (incl. Tracing, Replay) 90.72 kB - -
CDN Bundle (incl. Tracing, Replay, Logs, Metrics) 93.33 kB +0.01% +1 B 🔺
CDN Bundle (incl. Tracing, Replay, Feedback) 96.09 kB - -
CDN Bundle (incl. Tracing, Replay, Feedback, Logs, Metrics) 98.69 kB +0.01% +1 B 🔺
CDN Bundle - uncompressed 92.98 kB - -
CDN Bundle (incl. Tracing) - uncompressed 155.45 kB - -
CDN Bundle (incl. Logs, Metrics) - uncompressed 101.33 kB - -
CDN Bundle (incl. Tracing, Logs, Metrics) - uncompressed 163.08 kB - -
CDN Bundle (incl. Replay, Logs, Metrics) - uncompressed 231.43 kB -0.01% -9 B 🔽
CDN Bundle (incl. Tracing, Replay) - uncompressed 275.6 kB -0.01% -9 B 🔽
CDN Bundle (incl. Tracing, Replay, Logs, Metrics) - uncompressed 283.23 kB -0.01% -9 B 🔽
CDN Bundle (incl. Tracing, Replay, Feedback) - uncompressed 287.39 kB -0.01% -9 B 🔽
CDN Bundle (incl. Tracing, Replay, Feedback, Logs, Metrics) - uncompressed 295.01 kB -0.01% -9 B 🔽
@sentry/nextjs (client) 58.34 kB -0.06% -32 B 🔽
@sentry/sveltekit (client) 53.46 kB -0.05% -25 B 🔽
@sentry/core/server 44.57 kB -0.19% -81 B 🔽
@sentry/core/browser 13.99 kB -2.18% -311 B 🔽
@sentry/node 150.2 kB -0.03% -31 B 🔽
@sentry/node/import (ESM hook with diagnostics-channel injection) 83.3 kB +0.01% +2 B 🔺
@sentry/node - without tracing 88.49 kB +0.02% +10 B 🔺
@sentry/node - without channel injection 139.15 kB -0.02% -20 B 🔽
@sentry/aws-serverless 98.25 kB -0.11% -108 B 🔽
@sentry/cloudflare (withSentry) - minified 204.55 kB - -
@sentry/cloudflare (withSentry) 474.76 kB - -
@sentry/nextjs/cloudflare (withSentry) - minified 229.86 kB - -

View base workflow run

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@msonnb

msonnb commented Nov 13, 2026

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bugbot run

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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.

Want fixes drafted automatically? Bugbot Autofix can create code changes for findings. A team admin can enable Autofix in the Cursor dashboard.

Reviewed by Cursor Bugbot for commit 34d75e2. Configure here.

expect.objectContaining({
useLayerExtension: true,
tunnel: 'http://localhost:9000/envelope',
transportOptions: { keepAlive: false, proxy: false },

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Feat lacks integration coverage

Low Severity

This was flagged because the review guidelines ask feat PRs to include an integration or E2E test. The new path (leave the extension on when http_proxy is set, and skip the proxy for the tunnel with proxy: false) is only asserted in mocked unit tests, not in a real send through the extension.

Additional Locations (1)
Fix in Cursor Fix in Web

Triggered by project rule: PR Review Guidelines for Cursor Bot

Reviewed by Cursor Bugbot for commit 34d75e2. Configure here.

…tp_proxy

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

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