On Thu, Feb 13, 2020 at 7:30 AM Antony Stone
<Antony.Stone@xxxxxxxxxxxxxxxxxxxxx> wrote:
>
> On Thursday 13 February 2020 at 13:16:19, Eric Covener wrote:
>
> > On Wed, Feb 5, 2020 at 6:45 AM Antony Stone wrote:
> > > Hi.
> > >
> > > I'm using Apache as a load-balancing proxy, following
> > > https://httpd.apache.org/docs/2.4/mod/mod_proxy_balancer.html and
> > > https://httpd.apache.org/docs/2.4/mod/mod_proxy_hcheck.html as guides to
> > > setting it up.
> > >
> > > I've got it working fine when I use %{REQUEST_STATUS} in the health check
> > > expression, but I'd like to use the content type of the returned header
> > > for the health check.
> > >
> > > Following the "expression" link from the hcheck page and looking at
> > > https://httpd.apache.org/docs/2.4/expr.html I think I should be able to
> > > use %{CONTENT_TYPE} but this always returns status HcFl.
> > >
> > > Is there a list of what I can use in ProxyHCExpr definitions somewhere,
> > > other than the two examples (request status, and body content) shown on
> > > the above page?
> > >
> > > Any idea how to check the content-type of the returned response?
> >
> > Have you tried reading the value of the Content-Type response header
> > instead of this built-in var?
>
> No - how would I do that?
>
> What should I use for ProxyHCExpr to achieve this?
Sorry I can't easily test it. you'd use the resp() function w/ that
header as the parameter.
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