openfire.conf

server {
    server_name example.com;
    listen 80;
    listen 443;

    # force HTTPS protocol
    include /srv/example.com/nginx/conf/force_https_protocol.conf;

    # set $openfire_port based in the protocol (http/https)
    set $penfire_port 9090;
    if ($server_port = 443) {
        set $penfire_port 9091;
    }

    # proxy for openfire server
    location / {
        proxy_pass https://jabber.example.com:$openfire_port;
    }

    # logging
    access_log /srv/jabber.pastoraldacrianca.org.br/nginx/log/access.log;
    error_log /srv/jabber.pastoraldacrianca.org.br/nginx/log/error.log;
}