adding ap_get_protocol(c) which safeguards against NULL returns, for use instead of direct calling ap_run_protocol_get
changed Protocols to let vhosts override servers, removed old H2Engine example from readme
creating ap_array_index in util, forwarding scheme into request processing, enabling SSL vars only when scheme is not http:, delayed connection creation until task worker assignment
removed unnecessary lingering_close and sbh update on end of protocol upgrade handling
introducing ap_array_index in util, used in protocol and mod_h2
fixes existing protocol missing in selection if not explicitly proposed
new directive ProtocolsHonorOrder, added documentation for Protocols feature, changed preference selection and config merging
removed accidental code
new Protocols directive and core API changes to enable protocol switching on HTTP Upgrade or ALPN, implemented in mod_ssl and mod_h2
SECURITY (CVE-2014-0117): Fix a crash in mod_proxy. In a reverse proxy configuration, a remote attacker could send a carefully crafted request which could crash a server process, resulting in denial of service.
Thanks to Marek Kroemeke working with HP's Zero Day Initiative for reporting this issue.
* server/util.c (ap_parse_token_list_strict): New function.
* modules/proxy/proxy_util.c (find_conn_headers): Use it here.
* modules/proxy/mod_proxy_http.c (ap_proxy_http_process_response): Send a 400 for a malformed Connection header.
Submitted by: Edward Lu, breser, covener
http, mod_ssl: Introduce and return the 421 (Misdirected Request) status code for clients requesting a hostname on a reused connection whose SNI (from the TLS handshake) does not match. PR 5802.