This is an explicit RFC 2616 MUST and RFC 7230 mandates that
intermediaries send their own HTTP-version in forwarded
messages.
- - Client 'Keep-Alive' headers are no longer forwarded. From a user's
+ - Server 'Keep-Alive' headers are no longer forwarded. From a user's
point of view it doesn't really matter, but RFC 2616 (obsolete)
mandates that the header is removed and this fixes a Co-Advisor
complaint.