Nginx 反向代理 WebSocket 服务

# 反向代理
server {
    server_name domain.com;
    listen 443 ssl;
    
    # 通过 acme.sh 进行签署，具体见：https://blog.wangzhy.com/ssl#acmesh-%E7%AD%BE%E7%BD%B2%E8%AF%81%E4%B9%A6
    ssl_certificate /etc/nginx/ssl/xxxx/fullchain.cer;
    ssl_certificate_key /etc/nginx/ssl/xxxx/domain.com.key;
    
    # SSL 增强配置
    ssl_protocols TLSv1.2 TLSv1.3;
    ssl_ciphers ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256;
    ssl_prefer_server_ciphers on;
    

    location / {
        proxy_pass http://host.docker.internal:9001;
        # 基础代理头设置
        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;

        # 连接数限制
        proxy_http_version 1.1;  # 明确指定HTTP1.1
        proxy_buffers 8 16k;     # 缓冲区优化
        proxy_buffer_size 32k;

        # WebSocket 专用设置
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "upgrade";
        
        # 调整超时时间（秒）
        proxy_read_timeout 86400;  # 保持长连接
        proxy_send_timeout 86400;
    }
}