Nginx: directly return $remote_addr in text/plain
The simplest way is:
location /remote_addr { default_type text/plain; return 200 "$remote_addr\n";}No need to use any 3rd party module (echo, lua etc.)
Use ngx_echo:
location /ip { default_type text/plain; echo $remote_addr;}Use ngx_lua:
location /b { default_type text/plain; content_by_lua ' ngx.say(ngx.var.remote_addr) ';}
Here's an approach you can use to consider proxied connections:
# Map IP address to variablemap ":$http_x_forwarded_for" $IP_ADDR { ":" $remote_addr; # Forwarded for not set default $http_x_forwarded_for; # Forwarded for is set}server { ... location / { default_type text/plain; return 200 "$IP_ADDR"; }}