proxy_set_header Host $http_host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $remote_addr;
proxy_set_header X-Forwarded-Proto $scheme;

port_in_redirect    off;
proxy_redirect      off;
proxy_connect_timeout 3600;
proxy_read_timeout 3600;
proxy_send_timeout 3600;

proxy_buffering    off;
proxy_buffers 8 16k;
proxy_buffer_size 32k;