worker_processes  1;

events {
    worker_connections  1024;
}
http {
    include       mime.types;
    default_type  application/octet-stream;
    sendfile        on;
    keepalive_timeout  65;
    map $proxy_protocol_addr $real_ip {
            default $remote_addr;
        }
  server {
    listen 4560;
    server_name localhost;
    client_header_buffer_size 64k;
    large_client_header_buffers 8 128k;
    client_max_body_size 50m;

     location / {
            root /app/html;
            try_files $uri $uri/ /index.html;
        }

     location /api {
    proxy_pass http://localhost:5000/api;
    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;

    # 跨域配置
    add_header Access-Control-Allow-Origin * always;
    add_header Access-Control-Allow-Methods 'GET, POST, OPTIONS, PUT, DELETE' always;
    add_header Access-Control-Allow-Headers 'Authorization, Content-Type, X-Requested-With, Accept, Origin' always;
    add_header Access-Control-Allow-Credentials true always;
    add_header Access-Control-Expose-Headers 'Content-Length, Content-Range' always;

    # 处理OPTIONS预检请求
    if ($request_method = 'OPTIONS') {
        add_header Access-Control-Allow-Origin *;
        add_header Access-Control-Allow-Methods 'GET, POST, OPTIONS, PUT, DELETE';
        add_header Access-Control-Allow-Headers 'Authorization, Content-Type, X-Requested-With, Accept, Origin';
        add_header Access-Control-Max-Age 86400;
        add_header Content-Length 0;
        add_header Content-Type text/plain;
        return 200;
    }
}
}

}