Spurious message: "Leftovers after chunking: X bytes"

[mkauf]

I did this

curl 8.6.0 shows the verbose message "Leftovers after chunking: X bytes" when it receives a response with "Transfer-Encoding: chunked".

Example:

$ curl -s -v --http1.1 https://echo.free.beeceptor.com > /dev/null
[...]
< HTTP/1.1 200 OK
< Alt-Svc: h3=":443"; ma=2592000
< Content-Type: application/json
< Date: Wed, 14 Feb 2024 14:40:48 GMT
< Vary: Accept-Encoding
< Transfer-Encoding: chunked
< 
{ [5 bytes data]
* Leftovers after chunking: 5 bytes
* Connection #0 to host echo.free.beeceptor.com left intact

"git bisect" found commit d7b6ce6

I expected the following

No message "Leftovers after chunking".

curl 8.2.1 does not have the bug:

curl -s -v --http1.1 https://echo.free.beeceptor.com > /dev/null
[...]
< HTTP/1.1 200 OK
< Alt-Svc: h3=":443"; ma=2592000
< Content-Type: application/json
< Date: Wed, 14 Feb 2024 14:47:05 GMT
< Vary: Accept-Encoding
< Transfer-Encoding: chunked
< 
{ [5 bytes data]
* Connection #0 to host echo.free.beeceptor.com left intact

curl/libcurl version

curl 8.6.0

operating system

Fedora Linux 39

[icing]

I do not see that, given your example, on my machine, but it may be some timing dependant thing. Will investigate further.

Update: found it. Please see #12939 for the fix.

[mkauf]

@icing Great, thanks! I have tested #12939, the message does not appear anymore :-)

[jay]

Thanks