lowercasing request - varnish 4

[Paul Procacci]

https://www.varnish-cache.org/docs/3.0/reference/vmod_std.html

The std module provides a tolower function which is cleaner to use in my 
honest opinion.
Either way would work fine though.  There really isn't a wrong way to do it.

~Paul

On 9/30/2014 12:46 AM, Brice Burgess wrote:
> Hi,
>
> The varnish-4 Hashing documentation states; "It is worth pointing out 
> that Varnish doesn't lowercase the hostname or the URL before hashing 
> it so in theory having "Varnish.org/" and "varnish.org/" would result 
> in different cache entries."
>
> I would like to lowercase both the host and url during my 
> normalization routines in vcl_recv. Stackoverflow has an example using 
> embedded C;
>
> ===
> |C{
>      #include  <ctype.h>
>      static  void  strtolower(const  char  *s)  {
>          register  char  *c;
>          for  (c=s;  *c;  c++)  {
>              if  (isupper(*c))  {
>                  *c=  tolower(*c);
>              }
>          }
>          return;
>      }
> }C
>
> sub vcl_recv{
>     C{
>          strtolower(VRT_r_req_url(sp));
>     }C
> }
> ===
>
> Is this the recommended approach -- and will it work with the variable definition changes in varnish 4? (I'm worried||VRT_r_req_url|(sp) may break).
>
> Also -- what is the variable holding the Host string? Is VRT_r_req_host(sp) valid in varnish-4?
>
> Many thanks,
>
> ~ Brice
>
>   
>
>
>
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