# =============================================================================
# App-interner Nginx – HTTP only.
# TLS macht der äußere Proxy.
# =============================================================================

user nginx;
worker_processes auto;
worker_rlimit_nofile 8192;
pid /var/run/nginx.pid;
error_log /var/log/nginx/error.log warn;

events {
    worker_connections 2048;
    multi_accept on;
}

http {
    include       /etc/nginx/mime.types;
    default_type  application/octet-stream;

    log_format  main_ext  '$remote_addr - $remote_user [$time_iso8601] '
                          '"$request" $status $body_bytes_sent '
                          '"$http_referer" "$http_user_agent" '
                          'xff="$http_x_forwarded_for" '
                          'rt=$request_time urt="$upstream_response_time"';
    access_log /var/log/nginx/access.log main_ext;

    sendfile        on;
    tcp_nopush      on;
    tcp_nodelay     on;
    keepalive_timeout 65;
    server_tokens off;

    # CSVs etc. – am äußeren Proxy spiegeln!
    client_max_body_size 25M;
    client_body_buffer_size 128k;
    client_body_timeout 60s;
    client_header_timeout 30s;

    gzip on;
    gzip_vary on;
    gzip_proxied any;
    gzip_comp_level 6;
    gzip_types text/plain text/css application/json application/javascript
               text/xml application/xml application/xml+rss text/javascript
               image/svg+xml;

    limit_req_zone $binary_remote_addr zone=login:10m rate=5r/m;
    limit_req_zone $binary_remote_addr zone=app:10m   rate=30r/s;
    limit_conn_zone $binary_remote_addr zone=conn_per_ip:10m;

    upstream django_app {
        server web:8000 max_fails=3 fail_timeout=30s;
        keepalive 32;
    }

    include /etc/nginx/conf.d/*.conf;
}