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The change implements processing upstream early hints response in
ngx_http_proxy_module and ngx_http_grpc_module. A new directive
"early_hints" enables sending early hints to the client. By default,
sending early hints is disabled.
Example:
map $http_sec_fetch_mode $early_hints {
navigate $http2$http3;
}
early_hints $early_hints;
proxy_pass http://example.com;
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The directive allows to pass upstream response trailers to client.
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Multi headers are now using linked lists instead of arrays. Notably,
the following fields were changed: r->headers_in.cookies (renamed
to r->headers_in.cookie), r->headers_in.x_forwarded_for,
r->headers_out.cache_control, r->headers_out.link, u->headers_in.cache_control
u->headers_in.cookies (renamed to u->headers_in.set_cookie).
The r->headers_in.cookies and u->headers_in.cookies fields were renamed
to r->headers_in.cookie and u->headers_in.set_cookie to match header names.
The ngx_http_parse_multi_header_lines() and ngx_http_parse_set_cookie_lines()
functions were changed accordingly.
With this change, multi headers are now essentially equivalent to normal
headers, and following changes will further make them equivalent.
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ngx_http_v2_huff_decode.c and ngx_http_v2_huff_encode.c are renamed
to ngx_http_huff_decode.c and ngx_http_huff_encode.c.
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This function was only referenced from ngx_http_v3_create_push_request() to
initialize push connection log. Now the log handler is copied from the parent
request connection.
The change reduces diff to the default branch.
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The Huffman encoder/decoder now can be built separately from HTTP/2 module.
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Previously, an ngx_http_v3_connection_t object was created for HTTP/3 and
then assinged to c->data instead of the generic ngx_http_connection_t object.
Now a direct reference is added to ngx_http_connection_t, which is less
confusing and does not require a flag for http3.
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The structure is used to parse an HTTP/3 request. An object of this type is
added to ngx_http_request_t instead of h3_parse generic pointer.
Also, the new field is located outside of the request ephemeral zone to keep it
safe after request headers are parsed.
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The change reduces diff to the default branch for
src/http/ngx_http_request_body.c.
Also, client Content-Length, if present, is now checked against the real body
size sent by client.
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The change reduces diff to the default branch for
src/http/ngx_http_request.c and src/http/ngx_http_parse.c.
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New directives are added:
- http3_max_concurrent_pushes
- http3_push
- http3_push_preload
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The parameter allows processing HTTP/0.9-2 over QUIC.
Also, introduced ngx_http_quic_module and moved QUIC settings there
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To evaluate variables, a request is created in the certificate callback,
and then freed. To do this without side effects on the stub_status
counters and connection state, an additional function was introduced,
ngx_http_alloc_request().
Only works with OpenSSL 1.0.2+, since there is no SSL_CTX_set_cert_cb()
in older versions.
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HTTP/2-specific fields in structures are now available unconditionally.
Removed NGX_HTTP_V2 from the signature accordingly.
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The SPDY support is removed, as it's incompatible with the new module.
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The function is now called ngx_parse_http_time(), and can be used by
any code to parse HTTP-style date and time. In particular, it will be
used for OCSP stapling.
For compatibility, a macro to map ngx_http_parse_time() to the new name
provided for a while.
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The r->request_body_no_buffering flag was introduced. It instructs
client request body reading code to avoid reading the whole body, and
to call post_handler early instead. The caller should use the
ngx_http_read_unbuffered_request_body() function to read remaining
parts of the body.
Upstream module is now able to use this mode, if configured with
the proxy_request_buffering directive.
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If nginx was compiled without --with-http_ssl_module, but with some
other module which uses OpenSSL (e.g. --with-mail_ssl_module), insufficient
preprocessor check resulted in build failure. The problem was introduced
by e0a3714a36f8 (1.3.14).
Reported by Roman Arutyunyan.
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This function prototype and its implementation was added in r90,
but the implementation was removed in r97.
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Previously, only the first request in a connection was assigned the
configuration selected by SNI. All subsequent requests initially
used the default server's configuration, ignoring SNI, which was
wrong.
Now all subsequent requests in a connection will initially use the
configuration selected by SNI. This is done by storing a pointer
to configuration in http connection object. It points to default
server's configuration initially, but changed upon receipt of SNI.
(The request's configuration can be further refined when parsing
the request line and Host: header.)
This change was not made specific to SNI as it also allows slightly
faster access to configuration without the request object.
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The "proxy_bind", "fastcgi_bind", "uwsgi_bind", "scgi_bind" and
"memcached_bind" directives are now inherited; inherited value
can be reset by the "off" parameter. Duplicate directives are
now detected. Parameter value can now contain variables.
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No functional changes.
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Once we know protocol version, set u->headers_in.connection_close to indicate
implicitly assumed connection close with HTTP before 1.1.
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dereferencing type-punned pointer will break strict-aliasing rules
the bug has been introduced in r3065
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*) rename ngx_http_listen_t to ngx_http_listen_opt_t
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*) add listen's to the global cmcf->ports array instead of server's one
*) rename ngx_http_listen_conf_t to ngx_http_listen_opt_t
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ngx_http_test_reading(), the bug was introduced in r3050
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*) use preallocated terminal_posted_request
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