[+] update nginx

1. fix websocket proxying;
  2. add prometheus metrics for nginx ssl;

.env.examples

@@ -0,0 +1 @@
+NGINX_EXPORTER_PORTS=127.0.0.1:9113

.gitignore

@@ -15,3 +15,4 @@ d2/book1/books
 python/build
 .*.kate-swp
 !releases/whl/*.whl
+.env

d1/nginx_config.py

@@ -84,6 +84,7 @@ def forward(
                 location_body_get = lambda target_endpoint: \
                     r'''
     proxy_set_header Host $http_host;
+    proxy_http_version 1.1;
     proxy_set_header X-Forwarded-For $t1;
     proxy_set_header X-Forwarded-Proto $scheme;
     proxy_set_header Upgrade $http_upgrade;
@@ -292,6 +293,22 @@ stream {
 
         servers.append(
             r'''
+server {
+  server_name _;
+  listen 80 default_server;
+
+  location = /_metrics {
+    stub_status;
+    access_log off;
+    allow 172.0.0.0/8;     # allow only local exporter
+    deny all;
+  }
+
+  location ~ {
+    deny all;
+  }
+}
+
 server {
   set $t1 $remote_addr;
   if ($http_x_forwarded_for)
@@ -370,6 +387,7 @@ server {
     proxy_set_header Connection $connection_upgrade;
     proxy_redirect off;
     proxy_buffering off;
+    proxy_http_version 1.1;
     proxy_pass http://app:80;
   }
 }

docker-compose.yml

@@ -8,6 +8,18 @@ services:
       - ./d1/:/app/d1/:ro
       - ./tmp/cache/:/app/tmp/cache/:ro
     restart: on-failure
+  nginx-exporter:
+    image: docker.io/nginx/nginx-prometheus-exporter@sha256:6edfb73afd11f2d83ea4e8007f5068c3ffaa38078a6b0ad1339e5bd2f637aacd
+    #profiles:
+    #  - podman
+    #env_file:
+    #  .envs/nginx-exporter.env
+    environment:
+      SCRAPE_URI: http://ssl-app:80/_status
+      # LISTEN_ADDRESS: 0.0.0.0:9113
+    ports: 
+      - ${NGINX_EXPORTER_PORTS:-"127.0.0.1:9113"}:9113
+
   ssl-app:
     build:
       context: .