WSOD with hudge headers

[lbodiguel]

Hi,

On our dev environments, we've got the following drupal setting set to true on our development.services.yml :
http.response.debug_cacheability_headers: true

With some huge content types, create/edit forms reponses sends an extremly large X-Drupal-Cache-Tags header, which breaks varnish with the following error :

BogoHeader Header too long: X-Drupal-Cache-Tags

We've found a dirty workaround by setting VARNISHD_THREAD_POOL_MAX to 1000 -p http_resp_hdr_len=65536 -p http_resp_size=98304 since VARNISHD_THREAD_POOL_MAX is the last used variable.

Would it be possible to add VARNISHD_RESP_HDR_LEN and VARNISHD_HTTP_RESP_SIZE to the available variables please ?

Thank you !

[csandanov]

Additional env vars to control varnishd params have been added and available in tags latest and stability tag 2.3.0, i.e. wodby/varnish:4-2.3.0