Ruediger Pluem wrote:
Currently I work on PR 38602
(http://issues.apache.org/bugzilla/show_bug.cgi?id=38602).
First of all the reporter is correct that we do not sent the
Connection: Keep-Alive
header on our HTTP/1.1 keep-alive connections to the backend.
But this is only the small part of the problem since 8.1.2 of the RFC says:
"A significant difference between HTTP/1.1 and earlier versions of
HTTP is that persistent connections are the default behavior of any
HTTP connection. That is, unless otherwise indicated, the client
SHOULD assume that the server will maintain a persistent connection,"
The real problem is that we've never paid attention to the backend server.
If speaking to a backend http/1.0 server, we can try connection: keep-alive
if the server pays attention to it. That header is invalid for http/1.1
backends, and we should choose connection: close where appropriate.
To a backend http/1.0 server, connection: close is meaningless (and wrong).
