nginx-backend.conf

log_format main '"$request" $status $body_bytes_sent "$http_referer"';

server {
    listen 5690;

    # Allow CORS from anywhere
    add_header 'Access-Control-Allow-Origin' '*';
    add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS';
    add_header 'Access-Control-Allow-Headers' 'DNT,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Range,Authorization';

    client_max_body_size 0;  # Disables limit, relying on Flask's MAX_CONTENT_LENGTH

    location /api {
        proxy_pass http://127.0.0.1:5000;
        # proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header X-Forwarded-Proto $scheme;
    }

    location /swaggerui {
        proxy_pass http://127.0.0.1:5000;
        # proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header X-Forwarded-Proto $scheme;
    }

    location /socket.io {
        proxy_pass http://127.0.0.1:5000/socket.io;
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "upgrade";
    }

    error_log stderr warn;
    access_log /dev/stdout main;
}