SSE 模板

适合 Server-Sent Events。SSE 需要关闭代理缓冲，避免事件被 Nginx 聚合后延迟返回。

替换：

• example.com
• 127.0.0.1:3000

server {
    listen 80;
    listen [::]:80;
    server_name example.com;

    location /events/ {
        proxy_pass http://127.0.0.1:3000;
        proxy_http_version 1.1;

        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;

        proxy_buffering off;
        proxy_cache off;
        proxy_read_timeout 3600s;
        proxy_send_timeout 3600s;

        add_header X-Accel-Buffering no;
    }
}