Re: synth response body not working…

[Guillaume Quintard]

because you return deliver, you are bypassing the builtin.vcl section that
usually calls synthetic() (
https://github.com/varnishcache/varnish-cache/blob/master/bin/varnishd/builtin.vcl#L113),
that is why you have a 0-length body.

Also, the "Invalidated..." message is the reason (like the "OK" for a 200),
not the body. Check the response line of your response (i.e. the first
line, before the headers)

-- 
Guillaume Quintard


On Thu, Aug 29, 2019 at 11:38 AM Tim Kelty <timkelty at gmail.com> wrote:

> Within my vcl_recv, I have something like this:
>
>
> # Allow purging
> if (req.method == "PURGE") {
> if (!client.ip ~ purge) {
> return (synth(403, "Forbidden"));
> }
>
> if (req.http.xkey-purge) {
> set req.http.n-gone = xkey.purge(req.http.xkey-purge);
> # If you got this stage (and didn't error out above), purge the cached
> result
> return (synth(200, "Invalidated "+req.http.n-gone+" objects"));
> } else {
> return (purge);
> }
>
> }
>
> …and a a vcl_synth like:
>
> sub vcl_synth {
> if (resp.status == 720) {
> # We use this special error status 720 to force redirects with 301
> (permanent) redirects
> # To use this, call the following from anywhere in vcl_recv: return
> (synth(720, "http://host/new.html"));
> set resp.http.Location = resp.reason;
> set resp.status = 301;
> return (deliver);
> } elseif (resp.status == 721) {
> # And we use error status 721 to force redirects with a 302 (temporary)
> redirect
> # To use this, call the following from anywhere in vcl_recv: return
> (synth(720, "http://host/new.html"));
> set resp.http.Location = resp.reason;
> set resp.status = 302;
> return (deliver);
> }
>
> return (deliver);
> }
>
>
> When I perform the xkey-purge request, I get back a 200, and can confirm
> that the purging is working, but the content-length is always 0 (I don't
> get the "Invalidated n objects" message).
>
> Not sure where to start debugging…any idea what could cause this?
>
> —
> Tim Kelty
> _______________________________________________
> varnish-misc mailing list
> varnish-misc at varnish-cache.org
> https://www.varnish-cache.org/lists/mailman/listinfo/varnish-misc
>
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