Issue Review: cloudflare/workers-sdk#9901

Summary

Cloudflare Vite Plugin crashes with fetch error when dev server is behind a reverse proxy (e.g., nginx).

Findings

• Created: 2025-07-09
• Updated: 2026-01-20
• Version: @cloudflare/vite-plugin 1.9.1 → 1.21.2 (current)
• Component: vite-plugin-cloudflare
• Labels: bug, vite-plugin
• Comments: 2

Key Evidence

• Maintainer already engaged: @edmundhung responded on 2026-01-20 suggesting the issue may have been fixed in v1.13.19 by PR #11137
• PR #11137 merged 2025-10-31: Switched all instances of miniflare.getWorker().fetch() to use miniflare.dispatchFetch() for consistent response encoding
• No explicit fix found: No PR directly references or fixes issue #9901
• Awaiting user verification: Maintainer asked user to upgrade to v1.21.0, clear node_modules, and report back with nginx config if issue persists
• Significant version gap: 12 minor versions released since issue was reported (v1.9.1 → v1.21.2)

Error Details

The error occurs in miniflare.dispatchFetch() when the Vite dev server receives requests through a reverse proxy. The root cause is likely related to how the request URL or headers are constructed when forwarded through a proxy.

Recommendation

Status: NEEDS VERIFICATION

Reasoning: A maintainer has already engaged with the issue and believes a fix may be in place. The issue is now in an appropriate "waiting for user response" state. The second commenter (AtelyPham) was asked on 2026-01-20 to upgrade and verify - this is only 4 days old, so reasonable to wait for response.

Action: No immediate action needed. Monitor for user response. If no response after 2-3 weeks, the maintainer's comment can be followed up with a request to close if the issue is no longer relevant.

Suggested Comment

N/A - Maintainer has already appropriately engaged with the issue.