Hi Willy, On Thu, Mar 30, Willy Tarreau wrote: > On Thu, Mar 30, 2017 at 07:18:48AM +0300, Jarno Huuskonen wrote: > > Hi, > > > > On Sat, Mar 25, Aleksandar Lazic wrote: > > > how about to try this, it's untested. > > > > > > http-request set-var(req.mysticky) > > > url_param(email),url_param(newsletter_id) > > > stick on req.mysticky table detailspage > > > > I didn't get this to work. > > > > I didnt find a way to concat the two url_params. These are some examples > > I tried: > > http-request set-var(req.mysticky) %[urlp(em)]%[urlp(nl)] > > http-request set-var(req.mysticky) %[urlp(em)],%[urlp(nl)] > > http-request set-var(req.mysticky) urlp(em),urlp(nl) > > http-request set-var(req.mysticky) urlp(em)urlp(nl) > > > > Using header seems to work: > > http-request set-header X-Concat %[urlp(em)]%[urlp(nl)] > > http-request set-var(req.mysticky) req.hdr(X-Concat) > > > > Is there a way to concat strings in set-var w/out using header ? > > Not for now. With Thierry we've started to think about a stack-based > expression evaluator which would make it trivial to concat strings > and perform many other operations but we found that it will suffer > from some deep problems like retrying failed fetches.
Do you have any examples what kind operations could be possible with the evaluator ? > Thus I think that for now we'll have to only implement a "concat" > converter supporting a constant string and another one to concat a > variable. Maybe we can call them "strcat()" for constant strings > and "varcat()" for variable names. Is anyone interested in working > on this ? I'm not volunteering (at least not yet:) but before strcat/varcat is available maybe we could add couple of examples to configuration.txt how you can do some concat functionality with headers ? Do you see any use for simple substring replace (w/out regexps) ? -Jarno -- Jarno Huuskonen
