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Description: |
It seems [ NGINX drops HTTP headers with underscores silently |https://nginx . org/en/docs/http/ngx_http_core_module.html#underscores_in_headers].
The workaround is to add in the configuration the following:
{noformat} underscores_in_headers on; {noformat}
Apache [seems|https://httpd.apache.org/docs/trunk/env.html#fixheader] to have something similar. |
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