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The module allows to pass connections from Stream to other modules such as HTTP
or Mail, as well as back to Stream. Previously, this was only possible with
proxying. Connections with preread buffer read out from socket cannot be
passed.
The module allows selective SSL termination based on SNI.
stream {
server {
listen 8000 default_server;
ssl_preread on;
...
}
server {
listen 8000;
server_name foo.example.com;
pass 127.0.0.1:8001; # to HTTP
}
server {
listen 8000;
server_name bar.example.com;
...
}
}
http {
server {
listen 8001 ssl;
...
location / {
root html;
}
}
}
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The PCRE2 library is now used by default if found, instead of the
original PCRE library. If needed for some reason, this can be disabled
with the --without-pcre2 configure option.
To make it possible to specify paths to the library and include files
via --with-cc-opt / --with-ld-opt, the library is first tested without
any additional paths and options. If this fails, the pcre2-config script
is used.
Similarly to the original PCRE library, it is now possible to build PCRE2
from sources with nginx configure, by using the --with-pcre= option.
It automatically detects if PCRE or PCRE2 sources are provided.
Note that compiling PCRE2 10.33 and later requires inttypes.h. When
compiling on Windows with MSVC, inttypes.h is only available starting
with MSVC 2013. In older versions some replacement needs to be provided
("echo '#include <stdint.h>' > pcre2-10.xx/src/inttypes.h" is good enough
for MSVC 2010).
The interface on nginx side remains unchanged.
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Renamed and removed some macros.
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The quic kernel bpf helper inspects packet payload for DCID, extracts key
and routes the packet into socket matching the key.
Due to reuseport feature, each worker owns a personal socket, which is
identified by the same key, used to create DCID.
BPF objects are locked in RAM and are subject to RLIMIT_MEMLOCK.
The "ulimit -l" command may be used to setup proper limits, if maps
cannot be created with EPERM or updated with ETOOLONG.
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It contains wrappers for operations with BPF maps and for loading BPF programs.
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Addon modules, both dynamic and static, can now use shared source files.
Shared sources result in only one make rule even if specified several
times in different modules.
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Adds 'set' directive to the stream server context.
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Also, introduced ngx_stream_quic_module.
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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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Postpone filter is an essential part of subrequest functionality. In absence
of it a subrequest response body is sent to the client out of order with
respect to the main request header and body, as well as other subrequests.
For in-memory subrequests the response is also sent to the client instead of
being stored in memory.
Currently the postpone filter is automatically enabled if one of the following
standard modules which are known to create subrequests is enabled: ssi, slice,
addition. However a third-party module that creates subrequests can still be
built without the postpone filter or be dynamically loaded in nginx built
without it.
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The module implements random load-balancing algorithm with optional second
choice. In the latter case, the best of two servers is chosen, accounting
number of connections and server weight.
Example:
upstream u {
random [two [least_conn]];
server 127.0.0.1:8080;
server 127.0.0.1:8081;
server 127.0.0.1:8082;
server 127.0.0.1:8083;
}
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The module allows passing requests to upstream gRPC servers.
The module is built by default as long as HTTP/2 support is compiled in.
Example configuration:
grpc_pass 127.0.0.1:9000;
Alternatively, the "grpc://" scheme can be used:
grpc_pass grpc://127.0.0.1:9000;
Keepalive support is available via the upstream keepalive module. Note
that keepalive connections won't currently work with grpc-go as it fails
to handle SETTINGS_HEADER_TABLE_SIZE.
To use with SSL:
grpc_pass grpcs://127.0.0.1:9000;
SSL connections use ALPN "h2" when available. At least grpc-go works fine
without ALPN, so if ALPN is not available we just establish a connection
without it.
Tested with grpc-c++ and grpc-go.
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Instead of turning off some randomly selected http modules
when --without-http is specified, just don't process the
whole http modules section.
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IPv6 now compiled-in automatically if support is found. If there is a need
to disable it for some reason, --with-cc-opt="-DNGX_HAVE_INET6=0" can be used
for this.
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The ssl_preread module extracts information from the SSL Client Hello message
without terminating SSL. Currently, only $ssl_preread_server_name variable
is supported, which contains server name from the SNI extension.
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This reduces the number of moving parts in ABI compatibility checks.
Additionally, it also allows to use OpenSSL in FIPS mode while still
using md5 for non-security tasks.
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The auto/module script is extended to understand ngx_module_link=DYNAMIC.
When set, it links the module as a shared object rather than statically
into nginx binary. The module can later be loaded using the "load_module"
directive.
New auto/module parameter ngx_module_order allows to define module loading
order in complex cases. By default the order is set based on ngx_module_type.
3rd party modules can be compiled dynamically using the --add-dynamic-module
configure option, which will preset ngx_module_link to "DYNAMIC" before
calling the module config script.
Win32 support is rudimentary, and only works when using MinGW gcc (which
is able to handle exports/imports automatically).
In collaboration with Ruslan Ermilov.
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Splits a request into subrequests, each providing a specific range of response.
The variable "$slice_range" must be used to set subrequest range and proper
cache key. The directive "slice" sets slice size.
The following example splits requests into 1-megabyte cacheable subrequests.
server {
listen 8000;
location / {
slice 1m;
proxy_cache cache;
proxy_cache_key $uri$is_args$args$slice_range;
proxy_set_header Range $slice_range;
proxy_cache_valid 200 206 1h;
proxy_pass http://127.0.0.1:9000;
}
}
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The SPDY support is removed, as it's incompatible with the new module.
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stream {
limit_conn_zone $binary_remote_addr zone=perip:1m;
limit_conn_log_level error;
server {
...
limit_conn perip 1;
}
}
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It's now initialized in auto/options like the rest of variables
for system paths.
As a side effect, the currently unused macro NGX_SBIN_PATH now
gets the correct value.
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stream {
server {
...
allow 127.0.0.1;
deny all;
}
}
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Removed the deprecated --without-http_limit_zone_module option.
Deprecated the --with-imap and --with-imap_ssl_module options.
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Upstreams with the "zone" directive are kept in shared memory,
with a consistent view of all worker processes.
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If set, its value is output in "nginx -v" and in the error log.
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