Opened 3 weeks ago

#2167 new enhancement

variable support in proxy_protocol stream module

Reported by: s3rj1k Owned by:
Priority: minor Milestone:
Component: nginx-module Version: 1.19.x
Keywords: proxy_protocol, stream, variable Cc: s3rj1k
uname -a: Linux 20ku000mrt 5.11.14-1-MANJARO #1 SMP PREEMPT Wed Apr 14 08:25:29 UTC 2021 x86_64 GNU/Linux
nginx -V: nginx version: nginx/1.18.0
built with OpenSSL 1.1.1g 21 Apr 2020 (running with OpenSSL 1.1.1k 25 Mar 2021)
TLS SNI support enabled
configure arguments: --prefix=/etc/nginx --conf-path=/etc/nginx/nginx.conf --sbin-path=/usr/bin/nginx --pid-path=/run/nginx.pid --lock-path=/run/lock/nginx.lock --user=http --group=http --http-log-path=/var/log/nginx/access.log --error-log-path=stderr --http-client-body-temp-path=/var/lib/nginx/client-body --http-proxy-temp-path=/var/lib/nginx/proxy --http-fastcgi-temp-path=/var/lib/nginx/fastcgi --http-scgi-temp-path=/var/lib/nginx/scgi --http-uwsgi-temp-path=/var/lib/nginx/uwsgi --with-cc-opt='-march=x86-64 -mtune=generic -O2 -pipe -fno-plt -D_FORTIFY_SOURCE=2' --with-ld-opt=-Wl,-O1,--sort-common,--as-needed,-z,relro,-z,now --with-compat --with-debug --with-file-aio --with-http_addition_module --with-http_auth_request_module --with-http_dav_module --with-http_degradation_module --with-http_flv_module --with-http_geoip_module --with-http_gunzip_module --with-http_gzip_static_module --with-http_mp4_module --with-http_realip_module --with-http_secure_link_module --with-http_slice_module --with-http_ssl_module --with-http_stub_status_module --with-http_sub_module --with-http_v2_module --with-mail --with-mail_ssl_module --with-pcre-jit --with-stream --with-stream_geoip_module --with-stream_realip_module --with-stream_ssl_module --with-stream_ssl_preread_module --with-threads

Description

Considering a use case when ngx_stream_ssl_preread_module (ssl_preread on) is used to detect and separate TLS from none-TLS connection, it would be great to have the ability to set proxy_protocol from map values that depend on parsed incoming TLS or none-TLS connection.

This would allow to pass original client IP to a HTTP backend that listens with proxy_protocol enabled.

Effectively this would allow to terminate TLS and none TLS connections on a single port without losing original client IP in logs.

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