[wrangler] Respect and surface 429 errors from HTTP requests

[jasoncabot]

The Cloudflare API returns 429 errors with a rate limit header called https://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Retry-After

This isn't always set - but in certain cases it is. When it is available we should follow it up to a certain limit to avoid waiting / blocking for too long. I set the limit to be up to a maximum of 60s for now (open to suggestions here). When reaching 60s the request will fail with the original error.

I kept the isRetryable returning false for 429 errors in case there was any existing clients as APIError is exported from the public @cloudflare/workers-utils package. If a caller was doing (err.isRetryable()) retryNow() with no backoff it would send another request immediately, making more of a mess. So I put the handling code in the one place that could handle this backoff properly.

---

• Tests
  • Tests included/updated
  • Automated tests not possible - manual testing has been completed as follows:
  • Additional testing not necessary because:
• Public documentation
  • Cloudflare docs PR(s):
  • Documentation not necessary because: Internal error handling improvements not worth documenting.

[changeset-bot]

🦋 Changeset detected

Latest commit: 8f20ad3

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 9 packages

Name	Type
@cloudflare/workers-utils	Minor
wrangler	Minor
@cloudflare/autoconfig	Patch
@cloudflare/cli-shared-helpers	Patch
@cloudflare/deploy-helpers	Patch
@cloudflare/remote-bindings	Patch
@cloudflare/vite-plugin	Patch
@cloudflare/vitest-pool-workers	Patch
@cloudflare/workers-auth	Patch

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@cloudflare/autoconfig

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wrangler

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commit: 8f20ad3

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