HEAD request with empty body but set content-length triggers panic

[23doors]

Version
hyper 1.5.0

Platform
MacOS

Description

With HEAD requests it seems it is often the case that content-length is set to relevant GET body response, but payload is empty.
That's what for example tower_http ServeDir does. In debug mode this triggers panic:
https://github.com/hyperium/hyper/blob/master/src/proto/h1/role.rs#L704C36-L704C89

I guess this assertion should skip HEAD method completely or maybe it's more of a tower_http bug and body should define different sizehints here?

Release version works as expected, as assertion is skipped.

[seanmonstar]

Hm, Yea, that check should probably include checking if an actual body is expected. I imagine we have a function for that elsewhere in this file...