location = /favicon.ico {
    try_files /dev/null =404;
}

location = /mqtt {
    proxy_pass http://127.0.0.1:8083/mqtt;

    proxy_http_version 1.1;
    proxy_set_header Upgrade $http_upgrade;
    proxy_set_header Connection "Upgrade";

    # 禁用缓存 
    proxy_buffering off;

    proxy_connect_timeout 10s;  
    # 在该时间内没有数据交互的话 WebSocket 连接会自动断开，默认为 60s       
    proxy_send_timeout 3600s;
    proxy_read_timeout 3600s;

    # 反向代理真实 IP
    proxy_set_header Host $host;
    proxy_set_header X-Real-IP $remote_addr;
    proxy_set_header REMOTE-HOST $remote_addr;
    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
}

location / {
    proxy_set_header X-Real-IP $remote_addr;
    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    proxy_set_header Host $http_host;
    proxy_set_header X-NginX-Proxy true;

    proxy_connect_timeout 10s;  
    proxy_send_timeout 3600s;
    proxy_read_timeout 3600s;

    limit_rate 2m;

    proxy_pass http://127.0.0.1:8000/;
    proxy_redirect off;
}