hns_doh_loadbalancer/nginx.conf

server {
  listen      8001 default_server;
  server_name _;
  access_log off;
  location / {
    proxy_ssl_server_name on;
    proxy_set_header Host doh.hnshosting.au;
    proxy_pass       https://doh.hnshosting.au;
    add_header X-DoH-Server "Nathan.Woodburn/";
  }
}

server {
  listen      8002 default_server;
  server_name _;
  access_log off;
  location / {
    proxy_ssl_server_name on;
    proxy_set_header Host easyhandshake.com;
    proxy_pass       https://easyhandshake.com:8053;   
    add_header X-DoH-Server "EasyHandshake.com";
  }
}

server {
  listen      8003 default_server;
  server_name _;
  access_log off;
  location / {
    proxy_ssl_server_name on;
    proxy_set_header Host doh.hnsdns.com;
    proxy_pass       https://doh.hnsdns.com;    

    add_header X-DoH-Server "HNSDNS.com";
  }
}

server {
  listen      8004 default_server;
  server_name _;
  access_log off;
  location / {
    proxy_ssl_server_name on;
    proxy_set_header Host hnsns.net;
    proxy_pass       https://hnsns.net;

    add_header X-DoH-Server "HNSNS.net";
  }
}

# Load balancing each node will be timed out for 10 minutes if it fails
upstream main {
  server 127.0.0.1:8001 max_fails=1 fail_timeout=10m;
  server 127.0.0.1:8002 max_fails=1 fail_timeout=10m;
  server 127.0.0.1:8003 max_fails=1 fail_timeout=10m;
  server 127.0.0.1:8004 max_fails=1 fail_timeout=10m;
}

server {
  listen      80;
  server_name _;
  access_log off;
  
  #   For /dns-query requests, we will use the upstream defined above
  location /dns-query {
    proxy_pass http://main;
  }

  # All other requests will be redirected to a static page
  location / {
    root /var/www/html;
    index index.html;
  }
}