Varnish Extend example VCL

extend.vcl

# Varnish Extend VOD Demo

vcl 4.0;

import std;
import fsbackend;

backend default {
    .host = "origin-frankfurt.varnish-software.com";
    .port = "https";
    .ssl = 1;
    .ssl_nosni = 1;
    .ssl_noverify = 1;
}

sub vcl_init {
    new root = fsbackend.root("/var/www/html/");
}

sub vcl_recv {
    # Enforce HTTPS
    if (std.port(server.ip) == 80 && req.url !~ "^/r20.gif") {
        set req.http.x-redir = "https://" + req.http.host + req.url;
        return(synth(302, "Found"));
    }

    # Forward them to the player
    if (req.url == "/") {
        set req.http.x-redir = "https://" + req.http.host + "/dash.js/samples/dash-if-reference-player/";
        return(synth(302, "Found"));
    }

    set req.http.Host = server.identity;
    unset req.http.Cookie;

    if (req.url ~ "/r20.gif") {
        # Clean up URL
        set req.url = "/r20.gif";
        set req.backend_hint = root.backend();
    }
}

sub vcl_synth {
    if (resp.status == 302) {
        set resp.http.Location = req.http.x-redir;
        return (deliver);
    }
}

sub vcl_backend_response{
    set beresp.ttl = 60m;

    beresp.http.X-origin-hits = beresp.http.X-hits;
    beresp.http.X-origin-host = beresp.http.X-host;

    unset beresp.http.X-hits;
    unset beresp.http.X-host;
}

sub vcl_deliver {
    set resp.http.X-host = req.http.Host;
    set resp.http.X-hits = obj.hits;

    if (req.url != "/r20.gif") {
        std.log("vcs-key:ALL");
        std.log("vcs-key:HOST/" + req.http.Host);
        std.log("vcs-key:URL/" + req.http.Host + req.url);
    	std.log("vcs-key:CONTENT/" + req.http.Host + "/" + resp.http.Content-Type);
    }
}