Awesome, thanks for the fast turnaround.

B.

> On 29 Nov 2019, at 11:04, Christopher Faulet <cfau...@haproxy.com> wrote:
> 
> Le 29/11/2019 à 10:46, Robert Samuel Newson a écrit :
>> Hi,
>> I've discovered it is possible to make haproxy (2.0.9 and 2.0.10, at least) 
>> produce duplicate headers using the set-header directive (which is defined 
>> as "This does the same as "http-request add-header" except that the header 
>> name  is first removed if it existed.").
>> This only happens when HTX is enabled. The essential part is that the 
>> variable substitution uses values that are not set.
> 
> Hi,
> 
> There is indeed a bug and a pretty obvious one. The function looking for a 
> header fails if the value is empty while it should not. This bug should be 
> fixed now in all HTX versions (2.2-dev, 2.1, 2.0 and 1.9).
> 
> Thanks,
> -- 
> Christopher Faulet


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