proxy_pass Not Working on Port 80

I have two servers behind on IP address. Server1 is hosting several websites all using TLS exclusively. Recently I set up Server2 and setup one website using reverse proxy from Server1 and finally successfully deployed TLS on it as well. During that setup I had to use port 80 to use Certbot with

Re: Worker process core dumped

Hi, I found most times using "r" after ngx_http_free_request() won't have any problem. the core dump would happen once for a while in the high load. I am wondering if the "ngx.pfree" does not return the memory back to the os when it's called? Posted at Nginx Forum: https://forum.nginx.org/read.p