proxying to upstream port based on scheme

[Anoop Alias]

I have an httpd upstream server that listen on both http and https at
different port and want to send all http=>http_upstream and https =>
https_upstream

The following does the trick

#####################
if ( $scheme = https ) {
set $port 4430;
}
if ( $scheme = http ) {
        set $port 9999;
}

location / {

    proxy_pass   $scheme://127.0.0.1:$port;
}
#####################

Just wanted to know if this is very inefficient (if-being evil) than
hard-coding the port and having two different server{} blocks for http and
https .

Thanks in advance.



-- 
*Anoop P Alias*
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