/ + 'proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;'

this is needed, to get client ip

cfg/ngx/wa.fo.conf

@@ -70,7 +70,7 @@ server {
         default_type  application/json;
         proxy_hide_header Content-Location;
         add_header Content-Location  /rpc/$upstream_http_content_location;
-        #proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; # used to get client ip
         proxy_http_version 1.1;
         # note, that if writing 'post' (lowercase) instead of 'POST' (uppercase), that will lead to the postgrest error "cannot use the post method on rpc"
         proxy_method POST;