NGiNX reverse proxy

generate-cert.cmd

@ECHO OFF
SETLOCAL

SET COUNTRY=DE
SET STATE=Bundesland
SET LOCATION=Stadtname
SET ORG=Unternehmen
SET ORG_UNIT=Abteilung
SET COMMON_NAME=servername.unternehmen.de

SET KEY_FILE=self-signed.key
SET CERT_FILE=self-signed.crt

openssl req -x509 -sha256 -nodes -newkey rsa:4096 -days 365 ^
	-config "%~dp0openssl.conf" ^
	-subj "/C=%COUNTRY%/ST=%STATE%/L=%LOCATION%/O=%ORG%/OU=%ORG_UNIT%/CN=%COMMON_NAME%" ^
	-keyout "%KEY_FILE%" -out "%CERT_FILE%"

PAUSE

nginx.conf

#user  nobody;
worker_processes  1;

#error_log  logs/error.log;
#error_log  logs/error.log  notice;
#error_log  logs/error.log  info;

#pid        logs/nginx.pid;

events {
    worker_connections  1024;
}

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

    #log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '
    #                  '$status $body_bytes_sent "$http_referer" '
    #                  '"$http_user_agent" "$http_x_forwarded_for"';

    #access_log  logs/access.log  main;

    sendfile        on;

    keepalive_timeout  65;

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

    server {
        listen       0.0.0.0:443 ssl;
        server_name  MYHOSTNAME;

        ssl_certificate     self-signed.crt;
        ssl_certificate_key self-signed.key;
        ssl_protocols       TLSv1 TLSv1.1 TLSv1.2;

        # web application
        location /myapp/ {
            set $app http://127.0.0.1:8802;
            proxy_pass $app;
            proxy_set_header Host $host;
            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        }

        # web application with URL rewrite
        location /myapp-rewrite/ {
            set $app http://127.0.0.1:8802;
            proxy_pass $app;
            proxy_set_header Host $host;
            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
            
            # rewrite request URLs
            rewrite /myapp-rewrite/(.*) /$1 break;
            
            # rewrite HTML content
            sub_filter "http://127.0.0.1:8802/" "https://MYHOSTNAME/myapp-rewrite/";
            sub_filter_once off;
        }

        # web application with WebSockets
        location /myapp-with-ws/ {
            set $app http://127.0.0.1:8803;
            proxy_pass $app;
            proxy_set_header Host $host;
            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
            
            # HTTP config
            proxy_http_version 1.1;
            proxy_read_timeout 300s;
            
            # websocket headers
            proxy_set_header Upgrade $http_upgrade;
            proxy_set_header Connection $connection_upgrade;
        }

        # root content
        location / {
            root   html;
            index  index.html index.htm;
        }
    }
}

openssl.conf

[req]
req_extensions = v3_req
distinguished_name = req_distinguished_name

[req_distinguished_name]

[v3_req]
basicConstraints = CA:FALSE
keyUsage = digitalSignature, keyEncipherment