Issue
Both fetch and XMLHttpRequest are adding an unwanted header transfer-encoding: chunked
to any request with the method PUT
on Windows only, macOS is fine.
Steps to reproduce
- make a
fetch
request with methodPUT
Expected Behavior
No transfer-encoding
header should be set, as the content-length
is known
Actual Behavior
On Windows, transfer-encoding: chunked
header is set.
On MacOS, no transfer-encoding
header
Additional information
You can use https://webhook.site as an endpoint to test what headers the PUT
request is sent with.
If it matters, I’m testing on the prerelease 21.0.25.1
It’s not possible to use fetch headers{}
or setRequestHeader
, as transfer-encoding
is considered unsafe
, so you are forbidden from setting it manually