Remove http2 because it probably provides absolutely no benefit for a nostr client.

docs/examples/nginx_conf.yml

@@ -1,8 +1,48 @@
 ---
 - name: strfry | Configure nginx
   ansible.builtin.import_role:
-    name: nginxinc.nginx_core.nginx_config
+    name: nginx_core.nginx_config
   vars:
+    # afaict, overriding any numeric values in the main nginx config requires replacing the entire dictionary.
+    # See: https://github.com/nginxinc/ansible-role-nginx-config/issues/352
+    # The only difference between this and the main nginx config is the worker_rlimit_nofile value and worker_connections.
+    nginx_config_main_template_enable: true
+    nginx_config_main_template:
+      template_file: nginx.conf.j2
+      deployment_location: /etc/nginx/nginx.conf
+      backup: false
+      config: # https://nginx.org/en/docs/ngx_core_module.html
+        main:
+          user:
+            username: nginx
+            group: nginx
+          worker_processes: auto
+          error_log:
+            file: /var/log/nginx/error.log
+            level: notice
+          pid: /var/run/nginx.pid
+
+          # worker_rlimit_nofile changes the limit on the maximum number of open files (RLIMIT_NOFILE) for worker processes.
+          # Used to increase the limit without restarting the main process.
+          # The recomended value seems to be worker_connections * 2
+          worker_rlimit_nofile: 12288
+
+        events:
+          worker_connections: 4096
+
+        # include:  # String or a list of strings
+        #   - /etc/nginx/modules.conf
+        http: # https://nginx.org/en/docs/http/ngx_http_core_module.html
+          default_type: application/octet-stream
+          sendfile: true
+          server_tokens: false
+          tcp_nodelay: true
+          tcp_nopush: true
+          include:
+            - /etc/nginx/mime.types
+            - /etc/nginx/http.conf    # These are shared http level configs that nginx_conf refuses to directly configure.
+            - /etc/nginx/conf.d/*.conf
+
     nginx_config_http_template_enable: true
     nginx_config_http_template:
       - template_file: http/default.conf.j2
@@ -20,8 +60,9 @@
                   - address: "{{ default_interface_ipv4_address|default(ansible_default_ipv4.address) }}:{{ nginx_strfry_https_port|default(443) }} ssl"
                 include:
                   - "/etc/nginx/acme_{{ nginx_strfry_domain }}.conf"
-                  - /etc/nginx/enable_http2.conf
                 client_max_body_size: 0 # Stream request body to backend
+              http2:
+                enable: true
               locations:
                 - location: /
                   proxy:
@@ -39,3 +80,53 @@
                     connect_timeout: 3m
                     send_timeout: 3m
                     read_timeout: 3m
+
+      - template_file: http/default.conf.j2
+        deployment_location: /etc/nginx/http.conf
+        backup: false
+        config:
+          core:
+            default_type: application/octet-stream
+            sendfile: true
+            server_tokens: false
+            tcp_nodelay: true
+            tcp_nopush: true
+            resolver: # required for oscp stapling
+              address: 
+              - '1.1.1.1'
+              - '8.8.8.8'
+            resolver_timeout: 10s
+          log:
+            format:
+              - name: main
+                format: |
+                  '$remote_addr - $remote_user [$time_local] "$request" '
+                  '$status $body_bytes_sent "$http_referer" '
+                  '"$http_user_agent" "$http_x_forwarded_for"  "$realip_remote_addr"'
+          gzip: # https://nginx.org/en/docs/http/ngx_http_gzip_module.html
+            enable: true
+            comp_level: 3
+            disable: "msie6"
+            min_length: 1100
+            proxied: any
+            types:
+              - text/plain
+              - text/css 
+              - application/x-javascript 
+              - text/xml 
+              - application/xml
+            vary: true
+
+      - template_file: http/default.conf.j2
+        deployment_location: "/etc/nginx/conf.d/mappings.conf"
+        backup: false
+        config:
+          map:
+            mappings: # https://nginx.org/en/docs/http/websocket.html
+              - string: $http_upgrade
+                variable: $connection_upgrade
+                content:
+                  - value: default
+                    new_value: upgrade
+                  - value: "''"
+                    new_value: close