HTTP20Connection.request has no mechanism to send duplicate headers about hyper

[sethmlarson]

This project is no longer maintained, please find an alternative like HTTPX.

[bneradt]

I appreciate the reply.

I should point out that the README gives no indication of this. To the contrary, it even says:

hyper is maintained by Cory Benfield, with contributions from others. For more details about the contributors, please see CONTRIBUTORS.rst.

It might be helpful to you and others to indicate that the project is abandoned to avoid further issues like this.

[bneradt]

In case this helps someone else: in parallel, I posted a StackOverflow question about this issue to see whether there is a practical work around, and the suggestion which works for me is to use email.Message.EmailMessage:

https://stackoverflow.com/a/65604524/629530