Hello,
Using Nginx vars it's able to access to the response headers from proxied server with $upstream_http_[name] notation. But how I can access to them in Lua code? Unfortunately, I cannot use ngx.var.usptream_http_... because some of the header's names which I need contains dots.
The reason I need the headers of the upstream responses is because I find the source values in the Log phase, after some of them was dropped.
