Drupalfastly

sub vcl_recv {
#FASTLY recv

    if (req.request != "HEAD" && req.request != "GET" && req.request != "PURGE") {
      return(pass);
    }

    #Dissable access to these at varnish
    if (req.url ~ "install\.php|update\.php|cron\.php|apc.php|user/register") {
      error 404 "Page not found.";
    }

    #Strip cookies on assets
    if (req.url ~ "(?i)\.(pdf|asc|dat|txt|doc|xls|ppt|tgz|csv|png|gif|jpeg|jpg|ico|swf|css|js|woff)(\?.*)?$") {
      unset req.http.Cookie;
    }

    if (req.http.Cookie) {
      set req.http.Cookie = ";" req.http.Cookie;
      set req.http.Cookie = regsuball(req.http.Cookie, "; +", ";");
      set req.http.Cookie = regsuball(req.http.Cookie, ";(SESS[a-z0-9]+|SSESS[a-z0-9]+|NO_CACHE)=", "; \1=");
      set req.http.Cookie = regsuball(req.http.Cookie, ";[^ ][^;]*", "");
      set req.http.Cookie = regsuball(req.http.Cookie, "^[; ]+|[; ]+$", "");

      if (req.http.Cookie == "") {
        # If there are no remaining cookies, remove the cookie header. If there
        # aren't any cookie headers, Varnish's default behavior will be to cache
        # the page.
        unset req.http.Cookie;
      }
      else {
        # If there is any cookies left (a session or NO_CACHE cookie), do not
        # cache the page.
        return (pass);
      }
    }

    #Do node/add check after the cookie check, as if logged in we won't get here due to the pass
    if(req.url ~ "node/add") {
      error 404 "Page not found.";
    }


    // Normalize the Accept-Encoding header
    // as per: http://varnish-cache.org/wiki/FAQ/Compression
    if (req.http.Accept-Encoding) {
      if (req.url ~ "\.(jpg|png|gif|gz|tgz|bz2|tbz|mp3|ogg|woff)$") {
        # No point in compressing these
        remove req.http.Accept-Encoding;
      }
      elsif (req.http.Accept-Encoding ~ "gzip") {
        set req.http.Accept-Encoding = "gzip";
      }
      else {
        # Unknown or deflate algorithm
        remove req.http.Accept-Encoding;
      }
    }

    return(lookup);
}

sub vcl_fetch {
#FASTLY fetch

  if ((beresp.status == 500 || beresp.status == 503) && req.restarts < 1 && (req.request == "GET" || req.request == "HEAD")) {
    restart;
  }
  
  if(req.restarts > 0 ) {
    set beresp.http.Fastly-Restarts = req.restarts;
  }

  if (beresp.http.Set-Cookie) {
    set req.http.Fastly-Cachetype = "SETCOOKIE";
    return (pass);
  }

  if (beresp.http.Cache-Control ~ "private") {
    set req.http.Fastly-Cachetype = "PRIVATE";
    return (pass);
  }

  if (beresp.status == 500 || beresp.status == 503) {
    set req.http.Fastly-Cachetype = "ERROR";
    set beresp.ttl = 1s;
    set beresp.grace = 5s;
    return (deliver);
  }  

  if (beresp.http.Expires || beresp.http.Surrogate-Control ~ "max-age" || beresp.http.Cache-Control ~"(s-maxage|max-age)") {
    # keep the ttl here
  } else {
    # apply the default ttl
    set beresp.ttl = 3600s;
  }

  //If static asset
  if (req.url ~ "(?i)\.(pdf|asc|dat|txt|doc|xls|ppt|tgz|csv|png|gif|jpeg|jpg|ico|swf|css|js|woff)(\?.*)?$") {
    unset beresp.http.set-cookie;
  } else {
    if(!beresp.http.Surrogate-Control) {
      set beresp.http.Surrogate-Control = "max-age=3600"; #Force FASTLY to cache internally for 1 Hour
    }
    

    remove beresp.http.Cache-Control;
    set beresp.http.Cache-Control = " private, max-age=0, no-cache"; #No public cache so we can use purge
  }

  return(deliver);
}

sub vcl_hit {
#FASTLY hit

  if (!obj.cacheable) {
    return(pass);
  }
  return(deliver);
}

sub vcl_miss {
#FASTLY miss
  return(fetch);
}

sub vcl_deliver {
#FASTLY deliver

  remove resp.http.X-Powered-By; #Let's not give away to much server info
  remove resp.http.X-Generator; #Let's not give away to much server info
  remove resp.http.X-Drupal-Cache; #Always going to be a miss so don't need this

  return(deliver);
}

sub vcl_error {
#FASTLY error
}

sub vcl_pass {
#FASTLY pass
}

sub vcl_hash {
  if (req.http.Cookie) {
    set req.hash += req.http.Cookie;
  }
}