by the way, there is easier solution to this (thanks to Ruslan Ermilov)

something like this:

map $http_<header_name> $disabled {
    ^.{65,} 1
}

location / {
  if $disable {
     return 404;
  }
  proxy_pass http://upstream;
}
 

br,
Aziz.





> On 6 Mar 2018, at 15:16, Aziz Rozyev <aroz...@nginx.com> wrote:
> 
> hi,
> 
> I think you can do such a checking with lua/njs modules.
> 
> 
> br,
> Aziz.
> 
> 
> 
> 
> 
>> On 6 Mar 2018, at 15:13, mejetjoseph <nginx-fo...@forum.nginx.org> wrote:
>> 
>> Dear Team,
>> 
>> I would like to know is it possible to check the size of one of header
>> values in nginx conf file . I need to reset the header value if the size of
>> this header value exceed 64 character.
>> 
>> Could you please provide can I able to do this condition check in ngnix conf
>> file?
>> 
>> 
>> Kind regards,
>> Joseph
>> 
>> Posted at Nginx Forum: 
>> https://forum.nginx.org/read.php?2,278940,278940#msg-278940
>> 
>> _______________________________________________
>> nginx mailing list
>> nginx@nginx.org
>> http://mailman.nginx.org/mailman/listinfo/nginx
> 

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