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feat(aws-serverless): Send Lambda extension envelopes through http_proxy - #26359

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@msonnb msonnb commented Nov 13, 2026 •

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What

The Lambda extension now sends envelopes to Sentry through http_proxy/https_proxy and respects no_proxy, picking the proxy the same way the Node transport does.

Why

The extension forwarded envelopes with a plain fetch, which ignores proxy env vars, so functions that can only reach the internet through a proxy lost events once they enabled the extension. The proxy logic moves into a shared getProxyAgent in @sentry/node (exported as _INTERNAL_getProxyAgent) so both paths behave identically. This grows the extension bundle from ~5.8 KB to ~10.5 KB for the vendored proxy agent. Only lowercase env vars are read, matching the SDK transport. #26360, stacked on top, turns the extension on by default when a proxy is set.

Closes: #17902

The Lambda extension forwarded envelopes with a plain `fetch`, which ignores
`http_proxy`/`https_proxy`, so functions in a VPC without direct internet
access lost events. It now uses the same proxy agent and `no_proxy` handling
as the Node transport.

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

Compared: ab12f20 (PR test merge using develop at c7d73e4)

Against: c7d73e4 (develop) · base run #66026

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

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 - -
@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 - -
CDN Bundle (incl. Tracing, Replay, Feedback) 96.09 kB - -
CDN Bundle (incl. Tracing, Replay, Feedback, Logs, Metrics) 98.69 kB - -
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 - -
CDN Bundle (incl. Tracing, Replay) - uncompressed 275.6 kB - -
CDN Bundle (incl. Tracing, Replay, Logs, Metrics) - uncompressed 283.23 kB - -
CDN Bundle (incl. Tracing, Replay, Feedback) - uncompressed 287.39 kB - -
CDN Bundle (incl. Tracing, Replay, Feedback, Logs, Metrics) - uncompressed 295.01 kB - -
@sentry/nextjs (client) 58.34 kB - -
@sentry/sveltekit (client) 53.46 kB - -
@sentry/core/server 44.57 kB - -
@sentry/core/browser 13.99 kB - -
@sentry/node 150.19 kB -0.01% -3 B 🔽
@sentry/node/import (ESM hook with diagnostics-channel injection) 83.3 kB - -
@sentry/node - without tracing 88.48 kB +0.01% +2 B 🔺
@sentry/node - without channel injection 139.15 kB +0.01% +8 B 🔺
@sentry/aws-serverless 98.36 kB +0.01% +5 B 🔺
@sentry/cloudflare (withSentry) - minified 204.55 kB - -
@sentry/cloudflare (withSentry) 474.76 kB - -
@sentry/nextjs/cloudflare (withSentry) - minified 229.86 kB - -

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@msonnb
msonnb added this pull request to stack #26361 November 13, 2026 14:24
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@msonnb

msonnb commented Nov 13, 2026

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✅ Bugbot reviewed your changes and found no new issues!

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Support http_proxy when using the AWS Lambda extension

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