Regex on Variable ($servername)

[basti]

Hello,

the Problem are "multiple" subs.

When I use your example i get

curl -H Host:foo.www.example.com http://localhost/
domain is foo.www.example.com

But I need example.com like here https://regex101.com/r/9h3D77/1

Best Regards

On 10.11.2017 09:19, Francis Daly wrote:
> On Sun, Oct 29, 2017 at 11:53:23AM +0100, basti wrote:
> 
> Hi there,
> 
>> In this example from nginx docs domain has "fullname".
>>
>> server {
>>     server_name ~^(www\.)?(*?<domain>*.+)$;
>>     root /sites/*$domain*;
>> }
> 
> When I use the config
> 
> server {
>     server_name ~^(www\.)?(?<domain>.+)$;
>     return 200 "domain is $domain\n";
> }
> 
> I get the message
> 
> nginx: [emerg] pcre_compile() failed: unrecognized character
> after (?< in "^(www\.)?(?<domain>.+)$" at "domain>.+)$" in
> /usr/local/nginx/conf/nginx.conf
> 
> because my PCRE version does not recognise that syntax.
> 
> The page at http://nginx.org/en/docs/http/server_names.html does say:
> 
> """
> The PCRE library supports named captures using the following syntax:
> 
> ?<name>	Perl 5.10 compatible syntax, supported since PCRE-7.0
> ?'name'	Perl 5.10 compatible syntax, supported since PCRE-7.0
> ?P<name>	Python compatible syntax, supported since PCRE-4.0
> If nginx fails to start and displays the error message:
> pcre_compile() failed: unrecognized character after (?< in ...
> this means that the PCRE library is old and the syntax “?P<name>” should be tried instead.
> """
> 
> When I change the main line (by adding an extra P) to be
> 
>     server_name ~^(www\.)?(?P<domain>.+)$;
> 
> then it all seems to work for me:
> 
> $ curl -H Host:www.example.com http://localhost/
> domain is example.com
> $ curl -H Host:example.com http://localhost/
> domain is example.com
> $ curl -H Host:no.example.com http://localhost/
> domain is no.example.com
> 
>> servername: www.example.com -> $domain should be example.com
> 
> It works for me. What output do you get instead of what you want to get?
> 
> 	f
>