[multiple] spelling: github action check-spelling

[core] HTTP/2 PRIORITY_UPDATE frame (experimental)

*experimental* support for HTTP/2 PRIORITY_UPDATE frame

x-ref:
"Extensible Prioritization Scheme for HTTP"
https://datatracker.ietf.org/doc/ht

[core] HTTP/2 PRIORITY_UPDATE frame (experimental)

*experimental* support for HTTP/2 PRIORITY_UPDATE frame

x-ref:
"Extensible Prioritization Scheme for HTTP"
https://datatracker.ietf.org/doc/html/draft-ietf-httpbis-priority-12
https://datatracker.ietf.org/doc/html/rfc9218

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[multiple] WebSockets over HTTP/2 (fixes #3151)

Add support for WebSockets over HTTP/2 to lighttpd core and to
mod_cgi w/ config: cgi.upgrade = "enable"
mod_proxy w/ config: proxy.head

[multiple] WebSockets over HTTP/2 (fixes #3151)

Add support for WebSockets over HTTP/2 to lighttpd core and to
mod_cgi w/ config: cgi.upgrade = "enable"
mod_proxy w/ config: proxy.header += ("upgrade" => "enable")
mod_wstunnel

HTTP/2 CONNECT extension defined in RFC8441 is translated to HTTP/1.1
'Upgrade: websocket' requests to mod_cgi or mod_proxy, and is handled
directly in mod_wstunnel.

x-ref:
WebSockets over HTTP/2
https://redmine.lighttpd.net/issues/3151
Bootstrapping WebSockets with HTTP/2
https://datatracker.ietf.org/doc/html/rfc8441

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[core] reduce memcmp in http_request_parse_header

extend http_header_parse_ctx to support enum http_header_h2_e
HTTP/2 pseudo-headers in hpctx->id before using memcmp()

[core] http_header_hkey_get() perf (better asm)

[multiple] http_header APIs to reduce str copies

[core] http_header_e <=> lshpack_static_hdr_idx

map enum http_header_e to enum lshpack_static_hdr_idx
map enum lshpack_static_hdr_idx to enum http_header_e

[multiple] extend enum http_header_e list

[core] extend (data_string *) to store header id

(optional addition to (data_string *), used by http_header.[ch])

extend (data_string *) instead of creating another data_* TYPE_*
(new data type w

[core] extend (data_string *) to store header id

(optional addition to (data_string *), used by http_header.[ch])

extend (data_string *) instead of creating another data_* TYPE_*
(new data type would probably have (data_string *) as base class)
(might revisit choice in the future)

HTTP_HEADER_UNSPECIFIED has been removed. It was used in select
locations as an optimization to avoid looking up enum header_header_e
before checking the array, but the ordering in the array now relies
on having the id. Having the id allows for a quick check if a common
header is present or not in the htags bitmask, before checking the
array, and allows for integer comparison in the log(n) search of the
array, instead of strncasecmp().

With HTTP_HEADER_UNSPECIFIED removed, add optimization to set bit
in htags for HTTP_HEADER_OTHER when an "other" header is added,
but do not clear the bit, as there might be addtl "other" headers

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[core] http_header_hkey_get_lc() for HTTP/2

header field-names are required to be lowercase for HTTP/2
so specialize http_header_hkey_get() as http_header_hkey_get_lc()
for simpler comparison

lower

[core] http_header_hkey_get_lc() for HTTP/2

header field-names are required to be lowercase for HTTP/2
so specialize http_header_hkey_get() as http_header_hkey_get_lc()
for simpler comparison

lowercase field-names in http_headers[], as it does not matter for
buffer_eq_icase_ssn(), which is used with http_headers[] for HTTP/1.x

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[core] separate http_header_e from _htags bitmask

separate http_header_e index from r->{rqst,resp}_htags bitmask
(allows http_header_e remain 32-bit and to be used in array indexes
while also allow

[core] separate http_header_e from _htags bitmask

separate http_header_e index from r->{rqst,resp}_htags bitmask
(allows http_header_e remain 32-bit and to be used in array indexes
while also allowing r->{rqst,resp}_htags to grow to 64-bits wide
in the future, without requiring invasive changes)

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[core] http_header_parse_hoff()

moved and renamed from connections.c:connection_read_header_hoff()

[core] HTTP2-Settings

[core] http_header_remove_token()

[core] stricter parse of numerical digits

stricter parse of numerical digits for http status code, port num,
and a few other places. (stricter parse than that of strtol())

content ranges are still

[core] stricter parse of numerical digits

stricter parse of numerical digits for http status code, port num,
and a few other places. (stricter parse than that of strtol())

content ranges are still parsed more loosely at points of use

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[core] use uint32_t in http_header.[ch]

headers should never approach anywhere remotely close to > 4 GB

[multiple] split con, request (very large change)

NB: r->tmp_buf == srv->tmp_buf (pointer is copied for quicker access)

NB: request read and write chunkqueues currently point to connection
chun

[multiple] split con, request (very large change)

NB: r->tmp_buf == srv->tmp_buf (pointer is copied for quicker access)

NB: request read and write chunkqueues currently point to connection
chunkqueues; per-request and per-connection chunkqueues are
not distinct from one another
con->read_queue == r->read_queue
con->write_queue == r->write_queue

NB: in the future, a separate connection config may be needed for
connection-level module hooks. Similarly, might need to have
per-request chunkqueues separate from per-connection chunkqueues.
Should probably also have a request_reset() which is distinct from
connection_reset().

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[core] (const connection *) in http_header_*_get()

[core] http_header.c internal inline funcs

[core] add User-Agent to http_header_e enum

recognize as common header

(minor performance enhancement)

[core] http_header_str_contains_token()

[core] mark some more funcs w/ __attribute_pure__

[core] fix setting of headers previously reset (fixes #2919)

bug may result in long delays when using mod_deflate on connections
with keep-alive, as the result is sent without Content-Length or
Tran

[core] fix setting of headers previously reset (fixes #2919)

bug may result in long delays when using mod_deflate on connections
with keep-alive, as the result is sent without Content-Length or
Transfer-Encoding

(regression in lighttpd 1.4.51)

(thx GilGalaad)

x-ref:
"high latency on 1.4.51 + proxy + deflate"
https://redmine.lighttpd.net/boards/2/topics/8365
https://redmine.lighttpd.net/issues/2919

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[core] abstraction layer for HTTP header manip

http_header.[ch]
convert existing calls to manip request/response headers
convert existing calls to manip environment array (often header-related)