Hi there,
hope you're doing well.
The $bytes_received embedded variable is a part of ngx_stream_core_module,
please see the following link for details,
http://nginx.org/en/docs/stream/ngx_stream_core_module.html#var_bytes_received
My guess is the mentioned log_format directive was defined outsid
My nginx is compiled and installed, and the version installed is
Nginx version: nginx / 1.14.0
The parameters for compilation are:
Configure the arguments:--prefix=/etc/nginx
--sbin-path=/usr/sbin/nginx --modules-path=/usr/lib/nginx/modules
--conf-path=/etc/nginx/nginx.conf --error-lo
