Unstable_DevWorker.fetch fails when request has a body and receives a 401 response #12967
Description
What versions & operating system are you using?
Problem seems introduced in #12927
On Linux (x86_64)
"devDependencies": {
"@types/jest": "^29.5.11",
"@types/node": "^25.5.0",
"jest": "^29.7.0",
"ts-jest": "^29.4.6",
"typescript": "^5.3.3",
"undici": "^7.24.4",
"wrangler": "^4.75.0"
},
"dependencies": {
"hono": "^4.12.2"
}
Please provide a link to a minimal reproduction
https://github.com/beanow-at-crabnebula/undici-401-request-body
Describe the Bug
This seemed like a potential regression in undici and I've reported upstream: nodejs/undici#4910
However with purely undici and nodejs it wasn't easily reproducible.
What seems to be from a change in nodejs/undici#4747
Any (non websocket) request that includes a request body and gets a 401 response errors.
TypeError: fetch failed
at Object.processResponse (node_modules/.pnpm/wrangler@4.75.0/node_modules/wrangler/wrangler-dist/cli.js:31323:21)
at node_modules/.pnpm/wrangler@4.75.0/node_modules/wrangler/wrangler-dist/cli.js:31709:23
Cause:
expected non-null body source
at makeNetworkError (node_modules/.pnpm/wrangler@4.75.0/node_modules/wrangler/wrangler-dist/cli.js:30097:36)
at httpNetworkOrCacheFetch (node_modules/.pnpm/wrangler@4.75.0/node_modules/wrangler/wrangler-dist/cli.js:31924:20)
at httpFetch (node_modules/.pnpm/wrangler@4.75.0/node_modules/wrangler/wrangler-dist/cli.js:31733:37)
at mainFetch (node_modules/.pnpm/wrangler@4.75.0/node_modules/wrangler/wrangler-dist/cli.js:31495:24)
Please provide any relevant error logs
No response
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