[PATCH 00 of 12] handling of 1xx upstream responses

[Maxim Dounin]

Hello!

The following patch series introduces minimal handling of 1xx interim
upstream responses: such responses are now either rejected (101 Switching
Protocols if not requested or not supported by the protocol) or ignored
(other 1xx responses).

Additionally, the patch series does various related changes.  Most
notably, HTTP/0.9 responses are now rejected by default.  Handling
of HTTP/0.9 responses can be re-enabled with the "proxy_allow_http09"
directive.

Review and testing appreciated.

-- 
Maxim Dounin