HTTP/1.1 dictates that Cache-Control overrides Expires if both present.
Therefore, send only Cache-Control to HTTP/1.1 requests. This means
that if an intermediary upgraded the request to HTTP/1.1, and the actual
client sent HTTP/1.0, then the actual client might not understand
Cache-Control when it may have understood Expires. RFC 2616 HTTP/1.1
was released June 1999, almost 22 years ago (as this comment is written)
If a client today is sending HTTP/1.0, chances are the client does not
cache. Avoid the overhead of formatting time for Expires to send both
Cache-Control and Expires when the majority of clients are HTTP/1.1 or
HTTP/2 (or later).
(thx oldium)
improve handling of HTTP/2 DATA frames received
a short time after sending response
x-ref:
"POST request DATA part for non-existing URI closes HTTP/2 connection prematurely"
https://redmine.lighttpd.net/issues/3078
rename to reflect use for verifying client certificate
(old names are still accepted, but are discouraged)
ssl.ca-file -> ssl.verifyclient.ca-file
ssl.ca-dn-file -> ssl.verifyclient.ca-dn-file
ssl.ca-crl-file -> ssl.verifyclient.ca-crl-file
send HTTP/1.0 request to backend if no Host header sent with request
(If Host header is present with an HTTP/1.0 request from client, then
lighttpd can still make an HTTP/1.1 request to backends)
dir-listing.cache = ( "path" => "..." # path to cache root
"max-age" => 15 ) # max age (default 15 sec)
Simple cache of directory listing. Generating directory listing
on large directives can be expensive. Cache listing for reuse.
This option is for convenience to improve the performance of
directory listings on busy servers, and requires very little
effort for web server admin to enable.
For even better performance on busy servers, the directory listings
could be (externally) generated into index.html files, and mod_indexfile
could be used instead of mod_dirlisting. When directories are modified,
an external trigger could regenerate index.html.
parse (optional) query string in javascript to affect initial list sort
(which is also done in javascript)
This change allows the server-generated page to be cachable,
as the response is now independent of the query string.
set upper limit of 1/16 max_conns for parallel dirlist
(per lighttpd worker)
or else set 503 Service Unavailable with Retry-After: 2
attempt to avoid "livelock" scenarios or starvation of other requests
1/16 max_conns (default 85) is still a high arbitrary limit;
and limit applies only to directories larger than DIRLIST_BATCH-2
(DIRLIST_BATCH is currently 32)
read dir in pieces, allowing server to do other work between reads
(avoid potentially blocking other requests for long periods of time
while reading a large directory)
periodically flush intermediate chunkqueue to r->write_queue
to reduce occurrence of copying to reallocate larger chunk
use chunk_buffer to read ssi file
