not getting full request header in ngx.req.get_headers() for proxy protocol header

[Ilham Sulaksono]

Hi, i want to request header to my nginx instance but the header is not complete when using ngx.req.get_headers().Like X-forwarded-for is not shown in the result of ngx.req.get_headers(). I believe this because i am using proxy protocol for my load balancer. Is thee a ffeature to extract proxy_protocol header in openresty nginx lua module? Thanks