Actually I want to adapt the OpenTelemetry module to create a span for the 
upstream request.

Tobias

> Am 09.11.2021 um 10:44 schrieb Reinis Rozitis <r...@roze.lv>:
> 
>> Do generic request handlers/response filters work for request to upstream 
>> servers? Do you now any documentation/example on how to implement such an 
>> handler/filter?
> 
> As a variant the Sub filter module does 
> http://nginx.org/en/docs/http/ngx_http_sub_module.html (the only requirement 
> was that the response from the upstream shouldn’t be compressed though).
> 
> But probably it would be more easy to suggest something if you wrote what 
> exactly you want to achieve as there are also options to mangle with requests 
> using Lua etc.
> 
> 
> rr
> 
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