nginx.conf

#user  nobody;
worker_processes  54444;

error_log  /tmp/openresty_error.log ;



events {
    worker_connections  1024;
}


http {

    include       mime.types;
    default_type  application/octet-stream;


    ## DNS local pour pointer sur utiliser /etc/hosts : systemd-resolved.service
    #      memoire cache intern Nginx sur 60 secondes

    resolver 127.0.0.53 valid=6s; 

    log_format  main  '$remote_addr [$time_local] "$request" $status $body_bytes_sent  "$http_x_forwarded_for"';
    error_log  /home/actemium/Applications/reverseproxy/log/error.log ;
    access_log /home/actemium/Applications/reverseproxy/log/acces.log main;

    map $http_upgrade $connection_upgrade {
           default upgrade;
          '' close;
    } 

    init_by_lua_block {
        jit.opt.start("minstitch=10")
    }

    ########################################################################
    # Serveur Ocpp SOAP 1.5 : port 6060, redirect to http://{CBI}:6060/ocpp
    #                      ip=CBI ==> resolved with DDNS en localhost
    #                      DDNS mise a jour par cruncher Saiave ( log_ddns.rb )
    ########################################################################

    server {
        listen       6060;
        server_name  OcppSoapBackEndRP ;
        keepalive_timeout  25;

        location / {

            default_type text/html;
            lua_need_request_body on;
            client_max_body_size 10k;
            client_body_buffer_size 10k;
            set $proxy "unknown0";
	    rewrite_by_lua_block  {
                   ngx.req.read_body()
                   ngx.var.proxy = "unknown1"
                   local match = ngx.re.match(ngx.var.request_body,"chargeBoxIdentity[^>]*>([^<]*)<") 
		   if match then
            	      ngx.var.proxy = match[1]
	           end
            }
            proxy_pass http://$proxy:6060/ocpp;
            proxy_set_header   X-Real-IP          $remote_addr;
            proxy_set_header   X-Forwarded-Proto  $scheme;
            proxy_set_header   X-Forwarded-For    $proxy_add_x_forwarded_for;
        }
    }

    ########################################################################
    # WebSocket  server
    #
    # Le CBI est le dernier mot du path de l'URI de la requete Http :
    #  GET blabla/bla/foo/CBI Http/1.1
    #
    ########################################################################

    server {
        listen       6066;
        server_name  Ocpp-WS-BackEnd ;
	location / {
            set $proxy "unknown0";
	    proxy_read_timeout 100000000;

            access_by_lua_block {
               local cbi="no_cbi_in_ws_path"
               local path=ngx.unescape_uri(ngx.var.request_uri) 
               for token in string.gmatch(path, "[^/?=]+") do  cbi=token end
               ngx.var.proxy = cbi
	    }

            proxy_pass http://$proxy:6066/ocpp/$proxy;
            proxy_http_version 1.1;
            proxy_set_header Upgrade $http_upgrade;
            proxy_set_header Connection $connection_upgrade;
            proxy_set_header Host $host;
            proxy_set_header   X-Real-IP          $remote_addr;
            proxy_set_header   X-Forwarded-Proto  $scheme;
            proxy_set_header   X-Forwarded-For    $proxy_add_x_forwarded_for;

        }
    }
}