Jan, thanks for tracking this down to the duplicate headers. I will look into it.
Just to be sure I got everything right: you tested against the mod_h2 github versions? > Am 06.12.2015 um 07:53 schrieb Jan Ehrhardt <php...@ehrhardt.nl>: > > Jan Ehrhardt in gmane.comp.apache.devel (Sun, 06 Dec 2015 05:47:43 +0100): >> Content-Encoding: gzip, gzip > > Comment in h2_from_h1.c: > /* > * Since some clients choke violently on multiple Vary fields, or > * Vary fields with duplicate tokens, combine any multiples and remove > * any duplicates. > */ > > Well, some clients choke violently on duplicate tokens in the > Content-Encoding field. And on duplicate tokens in the > Strict-Transport-Security field. You should remove duplicates in all > fields. > -- > Jan >