nginx-config/sites-available/blog-staging

server {
  # allow access from localhost
  listen 443 ssl http2;
  server_name test.kazu634.com;

  ssl_certificate /etc/lego/.lego/certificates/_.kazu634.com.crt;
  ssl_certificate_key /etc/lego/.lego/certificates/_.kazu634.com.key;
  ssl_dhparam /etc/lego/dhparams_4096.pem;

  ssl_session_timeout 1d;
  ssl_session_cache   shared:SSL:3m;
  ssl_buffer_size     4k;
  ssl_session_tickets off;

  ssl_protocols TLSv1.3 TLSv1.2;
  ssl_ciphers ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:DHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-GCM-SHA384;

  ssl_stapling on;
  ssl_stapling_verify on;

  resolver 8.8.4.4 8.8.8.8 valid=300s;
  resolver_timeout 10s;

  # Enable HSTS (HTTP Strict Transport Security)
  add_header Strict-Transport-Security "max-age=31536000; includeSubdomains; preload";

  root /var/www/test;
  index index.html index.htm;

  access_log   /var/log/nginx/stag.access.log   ltsv;
  error_log    /var/log/nginx/stag.error.log;

  http2_max_field_size 256k;
  http2_max_header_size 256k;

  location /oauth2/ {
    proxy_pass       http://127.0.0.1:4180;

    # Configure proxying to auth
    # proxy_pass_request_body     off;
    # proxy_set_header            Content-Length "";
    proxy_set_header            Host                    $host;
    # proxy_set_header            X-Original-URL          $scheme://$http_host$request_uri;
    # proxy_set_header            X-Original-Method       $request_method;
    proxy_set_header            X-Real-IP $remote_addr;
    proxy_set_header            X-Scheme $scheme;
    proxy_set_header            X-Auth-Request-Redirect $request_uri;
    # proxy_http_version          1.1;
    # proxy_ssl_server_name       on;
    # proxy_pass_request_headers  on;
    # client_max_body_size        "1m";

    proxy_buffering on;
    proxy_buffer_size 256k;
    proxy_buffers 4 256k;
    proxy_busy_buffers_size 256k;
  }

  location = /oauth2/auth {
    proxy_pass       http://127.0.0.1:4180;

    # Configure proxying to auth
    proxy_pass_request_body     off;
    proxy_set_header            Content-Length "";
    proxy_set_header            Host                    $host;
    # proxy_set_header            X-Original-URL          $scheme://$http_host$request_uri;
    # proxy_set_header            X-Original-Method       $request_method;
    # proxy_set_header            X-Auth-Request-Redirect $request_uri;
    proxy_set_header            X-Real-IP $remote_addr;
    proxy_set_header            X-Scheme $scheme;
    client_max_body_size        "1m";

    proxy_buffering on;
    proxy_buffer_size 128k;
    proxy_buffers 4 256k;
    proxy_busy_buffers_size 256k;
  }

  location / {
    auth_request /oauth2/auth;
    error_page 401 = /oauth2/sign_in;

    try_files $uri $uri/ /index.html;

    auth_request_set $user $upstream_http_x_auth_request_user;
    auth_request_set $email $upstream_http_x_auth_request_email;
    proxy_set_header X-User $user;
    proxy_set_header X-Email $email;
    
    # if you enabled --pass-access-token, this will pass the token to the backend
    auth_request_set $token  $upstream_http_x_auth_request_access_token;
    proxy_set_header X-Access-Token $token;

    # if you enabled --cookie-refresh, this is needed for it to work with auth_request
    auth_request_set $auth_cookie $upstream_http_set_cookie;
    add_header Set-Cookie $auth_cookie;

    # When using the --set-authorization-header flag, some provider's cookies can exceed the 4kb
    # limit and so the OAuth2 Proxy splits these into multiple parts.
    # Nginx normally only copies the first `Set-Cookie` header from the auth_request to the response,
    # so if your cookies are larger than 4kb, you will need to extract additional cookies manually.
    auth_request_set $auth_cookie_name_upstream_1 $upstream_cookie_auth_cookie_name_1;

    # Extract the Cookie attributes from the first Set-Cookie header and append them
    # to the second part ($upstream_cookie_* variables only contain the raw cookie content)
    if ($auth_cookie ~* "(; .*)") {
        set $auth_cookie_name_0 $auth_cookie;
        set $auth_cookie_name_1 "auth_cookie_name_1=$auth_cookie_name_upstream_1$1";
    }

    # Send both Set-Cookie headers now if there was a second part
    if ($auth_cookie_name_upstream_1) {
        add_header Set-Cookie $auth_cookie_name_0;
        add_header Set-Cookie $auth_cookie_name_1;
    }
  }
}