upstream emqx_1883 {
    server 10.1.0.1:1883;
}

upstream emqx_8883 {
    server 10.1.0.1:8883;
}

upstream emqx_8083 {
    server 10.1.0.1:8083;
}

upstream emqx_8084 {
    server 10.1.0.1:8084;
}

server {
    listen 1883;
    proxy_pass emqx_1883;
    proxy_connect_timeout 10s;
    proxy_timeout 1h;
}

server {
    listen 8883;
    proxy_pass emqx_8883;
    proxy_connect_timeout 10s;
    proxy_timeout 1h;
}

server {
    listen 8083;
    proxy_pass emqx_8083;
    proxy_connect_timeout 10s;
    proxy_timeout 1h;
}

server {
    listen 8084;
    proxy_pass emqx_8084;
    proxy_connect_timeout 10s;
    proxy_timeout 1h;
}