map $http_upgrade $connection_upgrade { 
    default          keep-alive;  #默认为keep-alive 可以支持 一般http请求
    'websocket'      upgrade;     #如果为websocket 则为 upgrade 可升级的。
}

server {
    listen 80;
    server_name xiao.silkyai.cn;

    client_max_body_size 1024m;
    
    location / {
      proxy_set_header HOST $host;
      proxy_set_header X-Forwarded-Proto $scheme;
      proxy_set_header X-Real-IP $remote_addr;
      proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;

      proxy_set_header Upgrade $http_upgrade;
      proxy_set_header Connection $connection_upgrade;

      proxy_http_version 1.1;
      proxy_read_timeout 86400; # 可选的长时间保持 WebSocket 连接

      proxy_pass http://localhost:3005;
    }
    location /resources {
      proxy_set_header HOST $host;
      proxy_set_header X-Forwarded-Proto $scheme;
      proxy_set_header X-Real-IP $remote_addr;
      proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;

      proxy_set_header Upgrade $http_upgrade;
      proxy_set_header Connection $connection_upgrade;

      proxy_http_version 1.1;
      proxy_read_timeout 86400; # 可选的长时间保持 WebSocket 连接

      proxy_pass http://localhost:9000/resources;
    }
}