infra/roles/matrix-nginx/templates/01-matrix.j2

server {
  listen 443 ssl http2;

  {% if inventory_hostname in wg_clients -%}
  listen {{ wg_clients[inventory_hostname].ip }}:443 ssl http2;
  {% endif -%}

  ## For the federation port (not needed according to logs)
  # listen 8448 ssl http2 default_server;

  # ipv6
  #listen [::]:443 ssl http2;
  #listen [::]:8448 ssl http2 default_server;

  include listen-proxy-protocol.conf;
  server_name {{ matrix_url }};

  root {{ systemuserlist.matrix.home }}/html/;

  client_body_buffer_size 1024m;
  proxy_max_temp_file_size 0;

  include /etc/nginx/sudo-known.conf;

  location = /.well-known/matrix/client {
    default_type application/json;
    add_header Access-Control-Allow-Origin *;
    return 200 '{"m.homeserver":{"base_url":"https://{{ matrix_url }}"}}';
  }
  location = /.well-known/matrix/server {
    default_type application/json;
    add_header Access-Control-Allow-Origin *;
    return 200 '{"m.server": "{{ matrix_url }}:443"}';
  }


  location = /_health {
    proxy_pass http://{{ bridgewithdns.matrix }}:{{ matrix_synapse_port }}/health;
    proxy_set_header X-Forwarded-For $remote_addr;
    proxy_set_header X-Forwarded-Proto $scheme;
    proxy_set_header Host $host;
  }
  location ~* ^(\/_matrix|\/_synapse\/client) {
      # working around this issue that seems to still be hapening
      # https://github.com/matrix-org/synapse/issues/2748
      if ($args ~ (^|.*&)height=0(.*)) {
          set $args $1height=400$2;
      }
      if ($args ~ (^|.*&)width=0(.*)) {
          set $args $1width=400$2;
      }

      proxy_pass http://{{ bridgewithdns.matrix }}:{{ matrix_synapse_port }};
      proxy_set_header X-Forwarded-For $remote_addr;
      proxy_set_header X-Forwarded-Proto $scheme;
      proxy_set_header Host $host;


      # Nginx by default only allows file uploads up to 1M in size
      # Increase client_max_body_size to match max_upload_size defined
      # in homeserver.yaml
      client_max_body_size {{ matrix_upload_size }};
  }

  {% if matrix_registration_enabled -%}
  location ~ ^/(static|register) {
    proxy_set_header X-Forwarded-For $remote_addr;
    proxy_pass http://{{ bridgewithdns.matrix_reg }}:{{ matrix_registration_port }};
  }
  {% endif %}

  {% if matrix_webhook_enabled -%}
  location /_webhook {
    proxy_pass http://10.102.47.128:3033/_webhook;
    proxy_set_header X-Forwarded-For $remote_addr;
    proxy_set_header X-Forwarded-Proto $scheme;
    proxy_set_header Host $host;
  }
  {% endif %}

  {% if matrix_hydrogen_enabled -%}
  location /hydrogen {
    alias /usr/local/share/hydrogen-web/;
    charset utf-8;
    index index.html;
    autoindex off;
  }
  {% endif %}

  include /etc/nginx/authelia_internal.conf;
  location /_synapse/admin {
    include /etc/nginx/require_auth.conf;

    proxy_pass http://{{ bridgewithdns.matrix }}:{{ matrix_synapse_port }};
    proxy_set_header X-Forwarded-For $remote_addr;
    proxy_set_header X-Forwarded-Proto $scheme;
    proxy_set_header Host $host;
  }

  {% if matrix_admin_enabled -%}
  # to work around authelia not matching /_a/ requests, with this error:
  #
  #  No matching rule for subject https://{{ matrix_url }}/_a/... Applying default policy.

  location = /_a {
    return 302 https://{{ matrix_url }}/_a/index.html;
  }

  location /_a/ {
    include /etc/nginx/require_auth.conf;

    alias /usr/local/share/synapse-admin/;
    charset utf-8;
    index index.html;
    autoindex off;
  }
  {% endif %}

  {% if matrix_bridges_enabled -%}
  location /_telegram/public {
      proxy_pass http://{{ bridgewithdns.matrix_telegram }}:{{ matrix_telegram_port }};
  }
  {% endif %}

  ssl_certificate /usr/local/etc/certs/{{ matrix_url }}/fullchain.pem;
  ssl_certificate_key /usr/local/etc/certs/{{ matrix_url }}/privkey.pem;

  access_log /var/log/nginx/access_{{ matrix_url }}.log main;
  error_log /var/log/nginx/error_{{ matrix_url }}.log warn;

}

{# server {
 #   listen 443 ssl http2;
 #
 #   server_name {{ matrix_maubot_url }};
 #
 #   location /_matrix/maubot/v1/logs {
 #     proxy_pass http://{{ bridgewithdns.matrix_maubot }}:29316;
 #     proxy_http_version 1.1;
 #     proxy_set_header Upgrade $http_upgrade;
 #     proxy_set_header Connection "Upgrade";
 #     proxy_set_header X-Forwarded-For $remote_addr;
 #   }
 #
 #   location /_matrix/maubot {
 #     proxy_pass http://{{ bridgewithdns.matrix_maubot }}:29316;
 #     proxy_set_header X-Forwarded-For $remote_addr;
 #   }
 # } #}