Correct, but the issue is that as an admin you do not always get the error page that a client sees and you have to search for the cause without. Especially in this case as non SNI clients are often not browsers but non interactive programs.
Regards Rüdiger > -----Ursprüngliche Nachricht----- > Von: Stefan Eissing <stefan.eiss...@greenbytes.de> > Gesendet: Donnerstag, 20. September 2018 11:46 > An: dev@httpd.apache.org > Betreff: Re: minor nit in mod_ssl > > I am not opposed. However, there is an explanation added to the request > error notes, which normally appears in the 403 response if I am not > mistaken? > > -Stefan > > > Am 20.09.2018 um 11:40 schrieb Plüm, Rüdiger, Vodafone Group > <ruediger.pl...@vodafone.com>: > > > > Can we have set it to info? Debug is very verbose for SSL just to find > out why a HTTP request was replied to with a 403. > > > > Regards > > > > Rüdiger > > > > Von: William A Rowe Jr <wr...@rowe-clan.net> > > Gesendet: Montag, 17. September 2018 22:27 > > An: httpd <dev@httpd.apache.org> > > Betreff: Re: minor nit in mod_ssl > > > > On Mon, Sep 17, 2018 at 2:56 AM Stefan Eissing > <stefan.eiss...@greenbytes.de> wrote: > > > > > > mod_ssl/ssl_engine.kernel.c, 353: logs ERR (APLOGNO(02033)) when > strict_sni_vhost_check is enabled and a request comes in without SNI. > > > > > > Question: is a downgrade from ERR to INFO/DEBUG backportable or do > we consider this a break of compatibility? > > > > > > > > On Mon, Sep 17, 2018 at 10:43 AM William A Rowe Jr <wrowe@rowe- > clan.net> wrote: > > > > > > It is entirely appropriate to turn down the volume. That's what > module-by-module loglevels are there for. > > > > > > This is the loglevel of typical garbage request streams; > > > > [Mon Sep 17 11:44:43.036820 2018] [core:debug] [pid 26317:tid > 140199172134656] protocol.c(965): (20014)Internal error (specific > information not available): [client 127.0.0.1:34974] Failed to read > request header line (null) > > [Mon Sep 17 11:44:43.036871 2018] [core:debug] [pid 26317:tid > 140199172134656] protocol.c(1318): [client127.0.0.1:34974] AH00567: > request failed: error reading the headers > > [Mon Sep 17 15:24:46.146311 2018] [core:debug] [pid 26413:tid > 140199180527360] protocol.c(860): [client127.0.0.1:35330] AH02418: HTTP > Request Line; Unrecognized protocol 'HTTP/1.xx' (perhaps whitespace was > injected?) > > > > It seems that TLS missing SNI fits this same debug-level pattern of > diagnostics.