Varnish http to https - varnish

Question

I am new to varnish or programming in general. I want to setup http to https redirect for my domain.
Here's what I have so far
sub vcl_recv {
if (req.http.X-Forwarded-Proto != "https" || req.http.Scheme != "https"){
error 750 "http to https";
}
sub vcl_error {
if (obj.status == 750){
set obj.status = 302;
set obj.http.location = "https://" + req.http.Host + req.url;
}
return(deliver);
}
However, this seems to trigger for https requests instead of http. What am I doing wrong?

Answer 1

You seem to be using syntax from an extremely old version of Varnish.
See https://www.varnish-software.com/developers/tutorials/redirect/ for an official tutorial on HTTP to HTTPS redirection.
Here's a code snippet from that tutorial that allows you to redirect HTTP to HTTPS:
vcl 4.1;
import proxy;
backend default {
.host = "127.0.0.1";
.port = 8080;
}
sub vcl_recv {
if ((req.http.X-Forwarded-Proto && req.http.X-Forwarded-Proto != "https") ||
(req.http.Scheme && req.http.Scheme != "https")) {
return (synth(750));
} elseif (!req.http.X-Forwarded-Proto && !req.http.Scheme && !proxy.is_ssl()) {
return (synth(750));
}
}
sub vcl_synth {
if (resp.status == 750) {
set resp.status = 301;
set resp.http.location = "https://" + req.http.Host + req.url;
set resp.reason = "Moved";
return (deliver);
}
}