Any run of spaces or tabs separated the parts of the request line, a
fragment in the target was stripped, and an HTTP/1.1 request without
Host was served, so a server or a cache in front that follows RFC 9112
could see another request. Require a single SP between the parts, and
answer a target with '#' and an HTTP/1.1 request without Host with 400.
The client no longer sends the fragment of a URL.
yhirose
3420ba8fca
