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Date: Wed, 12 Nov 2014 11:45:13 -0500
From: Adam Prime <adam.prime@utoronto.ca>
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To: Alexandr Evstigneev <hurricup@gmail.com>, modperl@perl.apache.org
Subject: Re: mod_perl2: 304 (not modified) and custom headers
References: 
 <CA+exGDhCQ9H-KXRp1Y7BsokzK1_mVKRYAk1COBqod4H3YqfYOw@mail.gmail.com>
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 <CA+exGDhCQ9H-KXRp1Y7BsokzK1_mVKRYAk1COBqod4H3YqfYOw@mail.gmail.com>
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Can we see the code you're running into this issue with?  It sounds like 
confusion between $r->headers_out and $r->err_headers_out to me.

Adam

On 14-11-12 05:09 AM, Alexandr Evstigneev wrote:
> 1. Problem Description:
>
> It seems, that if I set status to 304, all custom headers being ignored
> and not sent to to the client.
> I'm making cross-domain ajax script and it should pass
> Access-Control-Allow-Origin even on 304 response.
> Works fine if data been modified but 304 response has no my headers.
>
> 2. Used Components and their Configuration:
>
> *** mod_perl version 2.000008
>
> *** using /usr/local/lib/perl5/site_perl/5.20/mach/Apache2/BuildConfig.pm
>
> *** Makefile.PL options:
>    MP_APR_CONFIG  => /usr/local/bin/apr-1-config
>    MP_APR_LIB     => aprext
>    MP_APXS        => /usr/local/sbin/apxs
>    MP_COMPAT_1X   => 1
>    MP_GENERATE_XS => 1
>    MP_LIBNAME     => mod_perl
>    MP_USE_DSO     => 1
>
>
> *** The httpd binary was not found
>
>
> *** (apr|apu)-config linking info
>
>   -L/usr/local/lib -laprutil-1  -ldb-5.3 -lgdbm  -lexpat -liconv
> -L/usr/lib -L/usr/local/lib -L/usr/local/lib/db5
>   -L/usr/local/lib -lapr-1 -lcrypt  -lpthread
>
>
>
> *** /usr/local/bin/perl -V
> Summary of my perl5 (revision 5 version 20 subversion 1) configuration:
>
>    Platform:
>      osname=freebsd, osvers=9.3-release-p4,
> archname=amd64-freebsd-thread-multi
>      uname='freebsd storage.cobweb-software.com
> <http://storage.cobweb-software.com/> 9.3-release-p4 freebsd
> 9.3-release-p4 #0 r273928: sat nov 1 17:16:18 msk 2014
> root@storage.cobweb-software.com:usrobjusrsrcsysgeneric amd64 '
>      config_args='-sde -Dprefix=/usr/local
> -Darchlib=/usr/local/lib/perl5/5.20/mach
> -Dprivlib=/usr/local/lib/perl5/5.20
> -Dman3dir=/usr/local/lib/perl5/5.20/perl/man/man3
> -Dman1dir=/usr/local/man/man1
> -Dsitearch=/usr/local/lib/perl5/site_perl/5.20/mach
> -Dsitelib=/usr/local/lib/perl5/site_perl/5.20 -Dscriptdir=/usr/local/bin
> -Dsiteman3dir=/usr/local/lib/perl5/5.20/man/man3
> -Dsiteman1dir=/usr/local/man/man1 -Ui_malloc -Ui_iconv
> -Uinstallusrbinperl -Dcc=cc -Duseshrplib -Dinc_version_list=none
> -Dccflags=-DAPPLLIB_EXP="/usr/local/lib/perl5/5.20/BSDPAN" -Doptimize=-g
> -DDEBUGGING -Ui_gdbm -Dusemultiplicity=y -Duse64bitint -Dusethreads=y
> -Dusemymalloc=n'
>      hint=recommended, useposix=true, d_sigaction=define
>      useithreads=define, usemultiplicity=define
>      use64bitint=define, use64bitall=define, uselongdouble=undef
>      usemymalloc=n, bincompat5005=undef
>    Compiler:
>      cc='cc', ccflags ='-DAPPLLIB_EXP="/usr/local/lib/perl5/5.20/BSDPAN"
> -DHAS_FPSETMASK -DHAS_FLOATINGPOINT_H -DDEBUGGING -fno-strict-aliasing
> -pipe -fstack-protector -I/usr/local/include',
>      optimize='-g',
>      cppflags='-DAPPLLIB_EXP="/usr/local/lib/perl5/5.20/BSDPAN"
> -DHAS_FPSETMASK -DHAS_FLOATINGPOINT_H -DDEBUGGING -fno-strict-aliasing
> -pipe -fstack-protector -I/usr/local/include'
>      ccversion='', gccversion='4.2.1 20070831 patched [FreeBSD]',
> gccosandvers=''
>      intsize=4, longsize=8, ptrsize=8, doublesize=8, byteorder=12345678
>      d_longlong=define, longlongsize=8, d_longdbl=define, longdblsize=16
>      ivtype='long', ivsize=8, nvtype='double', nvsize=8, Off_t='off_t',
> lseeksize=8
>      alignbytes=8, prototype=define
>    Linker and Libraries:
>      ld='cc', ldflags ='-pthread -Wl,-E  -fstack-protector -L/usr/local/lib'
>      libpth=/usr/lib /usr/local/lib /usr/include/gcc/4.2 /usr/lib
>      libs=-lgdbm -lm -lcrypt -lutil
>      perllibs=-lm -lcrypt -lutil
>      libc=, so=so, useshrplib=true, libperl=libperl.so
>      gnulibc_version=''
>    Dynamic Linking:
>      dlsrc=dl_dlopen.xs, dlext=so, d_dlsymun=undef, ccdlflags='
>   -Wl,-R/usr/local/lib/perl5/5.20/mach/CORE'
>      cccdlflags='-DPIC -fPIC', lddlflags='-shared  -L/usr/local/lib
> -fstack-protector'
>
>
> Characteristics of this binary (from libperl):
>    Compile-time options: DEBUGGING HAS_TIMES MULTIPLICITY PERLIO_LAYERS
>                          PERL_DONT_CREATE_GVSV
>                          PERL_HASH_FUNC_ONE_AT_A_TIME_HARD
>                          PERL_IMPLICIT_CONTEXT PERL_MALLOC_WRAP
>                          PERL_NEW_COPY_ON_WRITE PERL_PRESERVE_IVUV
>                          PERL_TRACK_MEMPOOL USE_64_BIT_ALL USE_64_BIT_INT
>                          USE_ITHREADS USE_LARGE_FILES USE_LOCALE
>                          USE_LOCALE_COLLATE USE_LOCALE_CTYPE
>                          USE_LOCALE_NUMERIC USE_PERLIO USE_PERL_ATOF
>                          USE_REENTRANT_API
>    Built under freebsd
>    Compiled at Nov  9 2014 08:27:44
>    %ENV:
>      PERL5LIB="/raid/www/lib"
>      PERL_LWP_USE_HTTP_10="1"
>    @INC:
>      /raid/www/lib
>      /usr/local/lib/perl5/5.20/BSDPAN
>      /usr/local/lib/perl5/site_perl/5.20/mach
>      /usr/local/lib/perl5/site_perl/5.20
>      /usr/local/lib/perl5/5.20/mach
>      /usr/local/lib/perl5/5.20
>      .
>
> *** Packages of interest status:
>
> Apache2            : -
> Apache2::Request   : -
> CGI                : 3.65
> ExtUtils::MakeMaker: 6.98, 6.98
> LWP                : 6.08
> mod_perl           : -
> mod_perl2          : 2.000008
>
>
> 3. This is the core dump trace: (if you get a core dump):
>
>    [CORE TRACE COMES HERE]
>
> This report was generated by /usr/local/bin/mp2bug on Wed Nov 12
> 09:51:30 2014 GMT.