nginx redirect to the FQDN with an alternative port

gistfile1.nginxconf

server {
        listen   80; ## listen for ipv4; this line is default and implied
        listen   [::]:80 default_server ipv6only=on; ## listen for ipv6
        server_name localhost;  # A sane default, nobody cares
        # The actual logic
        set $this_host $host;
        if ($host !~* "\.fqdn\.com$") {
                #rewrite ^ https://$host.fqdn.com:8006$request_uri? permanent;
                set $this_host "$host.fqdn.com";
        }
        rewrite ^ https://$this_host:8006$request_uri? permanent;
}


server {
        listen 443 default_server;
        listen [::]:443 default_server ipv6only=on;
        server_name localhost;  # A sane default, nobody cares
        ssl on;
        ssl_certificate /path/to/the.pem;
        ssl_certificate_key /path/to/the.key;
        ssl_session_timeout 1m;
        ssl_protocols SSLv3 TLSv1;
        ssl_ciphers ALL:!ADH:!EXPORT56:RC4+RSA:+HIGH:+MEDIUM:+LOW:+SSLv3:+EXP;
        ssl_prefer_server_ciphers on;
        # The actual logic
        set $this_host $host;
        if ($host !~* "\.fqdn\.com$") {
                #rewrite ^ https://$host.fqdn.com:8006$request_uri? permanent;
                set $this_host "$host.fqdn.com";
        }
        rewrite ^ https://$this_host:8006$request_uri? permanent;
}