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Posted to modperl@perl.apache.org by Kate Yoak <ka...@yoak.com> on 2007/12/30 21:45:01 UTC
Re: [bugreport] Internal Server Error output - but no error
I have solved the problem. I was returning 200 instead of using
Apache2::Const::OK. My response was indeed interpreted as 'OK" by
apache - but not by some place somewhere else. There was no error
message anywhere. I'll modify the bugreport below to have it
addressed or not at the maintainers' discretion.
On Dec 29, 2007, at 11:14 AM, Kate Yoak wrote:
> I am using mp2bug format for the message. Hope, that's ok!
>
>
> =========================
> -------------8<---------- Start Bug Report ------------8<----------
> 1. Problem Description:
returning 200 as a scalar from a content handler causes Apache to
spit up "Internal Server Error" html despite a '200 OK' status.
There is no error or warning in the log, nor any other indication of
a problem
> sub handler{
> return 200;
> }
>
> Generates the proper headers:
> HTTP/1.1 200 OK
> Date: Sun, 30 Dec 2007 03:12:03 GMT
> Server: Apache/2.2.6 (Unix) mod_perl/2.0.3 Perl/v5.8.8
> Content-Length: 497
> Content-Type: text/html; charset=iso-8859-1
>
> But then adds a 500 error html to the output:
> <!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">
> <html><head>
> <title>200 OK</title>
> </head><body>
> <h1>OK</h1>
> <p>The server encountered an internal error or
> misconfiguration and was unable to complete
> your request.</p>
> <p>Please contact the server administrator,
> you@example.com and inform them of the time the error occurred,
> and anything you might have done that may have
> caused the error.</p>
> <p>More information about this error may be available
> in the server error log.</p>
> </body></html>
>
>
> Interestingly, a 302 result works correctly. A static page display
> is fine also. I have rebuilt perl & mod_perl since I encountered
> the error to no avail.
>
> 2. Used Components and their Configuration:
>
> *** mod_perl version 2.000003
>
> *** using /tmp/mod_perl-2.0.3/lib/Apache2/BuildConfig.pm
>
> *** Makefile.PL options:
> MP_APR_LIB => aprext
> MP_APXS => /usr/sbin/apxs
> MP_COMPAT_1X => 1
> MP_GENERATE_XS => 1
> MP_LIBNAME => mod_perl
> MP_USE_DSO => 1
>
>
> *** /usr/sbin/httpd -V
> Server version: Apache/2.2.6 (Unix)
> Server built: Dec 28 2007 00:27:39
> Server's Module Magic Number: 20051115:5
> Server loaded: APR 1.2.11, APR-Util 1.2.10
> Compiled using: APR 1.2.11, APR-Util 1.2.10
> Architecture: 32-bit
> Server MPM: Prefork
> threaded: no
> forked: yes (variable process count)
> Server compiled with....
> -D APACHE_MPM_DIR="server/mpm/prefork"
> -D APR_HAS_SENDFILE
> -D APR_HAS_MMAP
> -D APR_HAVE_IPV6 (IPv4-mapped addresses enabled)
> -D APR_USE_SYSVSEM_SERIALIZE
> -D APR_USE_PTHREAD_SERIALIZE
> -D SINGLE_LISTEN_UNSERIALIZED_ACCEPT
> -D APR_HAS_OTHER_CHILD
> -D AP_HAVE_RELIABLE_PIPED_LOGS
> -D DYNAMIC_MODULE_LIMIT=128
> -D HTTPD_ROOT="/usr"
> -D SUEXEC_BIN="/usr/bin/suexec"
> -D DEFAULT_PIDLOG="/var/run/httpd.pid"
> -D DEFAULT_SCOREBOARD="logs/apache_runtime_status"
> -D DEFAULT_LOCKFILE="/var/run/accept.lock"
> -D DEFAULT_ERRORLOG="logs/error_log"
> -D AP_TYPES_CONFIG_FILE="/etc/httpd/conf/mime.types"
> -D SERVER_CONFIG_FILE="/etc/httpd/conf/httpd.conf"
>
> *** /usr/bin/ldd /usr/sbin/httpd
> linux-gate.so.1 => (0x00e17000)
> libm.so.6 => /lib/libm.so.6 (0x00c9e000)
> libaprutil-1.so.0 => /usr/lib/libaprutil-1.so.0 (0x00388000)
> libpq.so.4 => /usr/lib/libpq.so.4 (0x002b2000)
> libsqlite3.so.0 => /usr/lib/libsqlite3.so.0 (0x005ae000)
> libexpat.so.0 => /usr/lib/libexpat.so.0 (0x00766000)
> libapr-1.so.0 => /usr/lib/libapr-1.so.0 (0x00365000)
> libuuid.so.1 => /lib/libuuid.so.1 (0x003ae000)
> librt.so.1 => /lib/librt.so.1 (0x003f0000)
> libcrypt.so.1 => /lib/libcrypt.so.1 (0x00cee000)
> libpthread.so.0 => /lib/libpthread.so.0 (0x00cda000)
> libdl.so.2 => /lib/libdl.so.2 (0x00c98000)
> libc.so.6 => /lib/libc.so.6 (0x00b6d000)
> /lib/ld-linux.so.2 (0x00b4f000)
> libssl.so.5 => /lib/libssl.so.5 (0x00d95000)
> libcrypto.so.5 => /lib/libcrypto.so.5 (0x00101000)
> libkrb5.so.3 => /usr/lib/libkrb5.so.3 (0x00210000)
> libresolv.so.2 => /lib/libresolv.so.2 (0x00d1e000)
> libnsl.so.1 => /lib/libnsl.so.1 (0x00d33000)
> libgssapi_krb5.so.2 => /usr/lib/libgssapi_krb5.so.2 (0x00d50000)
> libcom_err.so.2 => /lib/libcom_err.so.2 (0x00d4b000)
> libk5crypto.so.3 => /usr/lib/libk5crypto.so.3 (0x00d6a000)
> libz.so.1 => /usr/lib/libz.so.1 (0x00cc5000)
> libkrb5support.so.0 => /usr/lib/libkrb5support.so.0 (0x00d90000)
>
>
> *** (apr|apu)-config linking info
>
> -L/usr/lib -laprutil-1 -lpq -lsqlite3 -lexpat
> -L/usr/lib -lapr-1 -luuid -lrt -lcrypt -lpthread -ldl
>
>
>
> *** /usr/bin/perl -V
> Summary of my perl5 (revision 5 version 8 subversion 8) configuration:
> Platform:
> osname=linux, osvers=2.6.14-1.1653_fc4smp, archname=i686-linux
> uname='linux nat.longmedia.com 2.6.14-1.1653_fc4smp #1 smp tue
> dec 13 21:46:01 est 2005 i686 i686 i386 gnulinux '
> config_args=''
> hint=recommended, useposix=true, d_sigaction=define
> usethreads=undef use5005threads=undef useithreads=undef
> usemultiplicity=undef
> useperlio=define d_sfio=undef uselargefiles=define usesocks=undef
> use64bitint=undef use64bitall=undef uselongdouble=undef
> usemymalloc=n, bincompat5005=undef
> Compiler:
> cc='gcc', ccflags ='-fno-strict-aliasing -pipe -Wdeclaration-
> after-statement -I/usr/local/include -D_LARGEFILE_SOURCE -
> D_FILE_OFFSET_BITS=64 -I/usr/include/gdbm',
> optimize='-O2',
> cppflags='-fno-strict-aliasing -pipe -Wdeclaration-after-
> statement -I/usr/local/include -I/usr/include/gdbm'
> ccversion='', gccversion='4.0.2 20051125 (Red Hat 4.0.2-8)',
> gccosandvers=''
> intsize=4, longsize=4, ptrsize=4, doublesize=8, byteorder=1234
> d_longlong=define, longlongsize=8, d_longdbl=define,
> longdblsize=12
> ivtype='long', ivsize=4, nvtype='double', nvsize=8,
> Off_t='off_t', lseeksize=8
> alignbytes=4, prototype=define
> Linker and Libraries:
> ld='gcc', ldflags =' -L/usr/local/lib'
> libpth=/usr/local/lib /lib /usr/lib
> libs=-lnsl -lgdbm -ldb -ldl -lm -lcrypt -lutil -lc
> perllibs=-lnsl -ldl -lm -lcrypt -lutil -lc
> libc=/lib/libc-2.3.5.so, so=so, useshrplib=true,
> libperl=libperl.so
> gnulibc_version='2.3.5'
> Dynamic Linking:
> dlsrc=dl_dlopen.xs, dlext=so, d_dlsymun=undef, ccdlflags='-Wl,-
> E -Wl,-rpath,/usr/lib/perl5/5.8.8/i686-linux/CORE'
> cccdlflags='-fpic', lddlflags='-shared -L/usr/local/lib'
>
>
> Characteristics of this binary (from libperl):
> Compile-time options: PERL_MALLOC_WRAP USE_LARGE_FILES USE_PERLIO
> Built under linux
> Compiled at Dec 29 2007 18:07:25
> %ENV:
> PERL5LIB="/long/modules"
> PERL_LWP_USE_HTTP_10="1"
> @INC:
> /long/modules
> /usr/lib/perl5/5.8.8/i686-linux
> /usr/lib/perl5/5.8.8
> /usr/lib/perl5/site_perl/5.8.8/i686-linux
> /usr/lib/perl5/site_perl/5.8.8
> /usr/lib/perl5/site_perl
> .
>
> *** Packages of interest status:
>
> Apache2 : -
> Apache2::Request : -
> CGI : 3.15
> ExtUtils::MakeMaker: 6.30
> LWP : -
> mod_perl : -
> mod_perl2 : 2.000003
>
>
> 3. This is the core dump trace: (if you get a core dump):
>
> [CORE TRACE COMES HERE]
>
> This report was generated by /usr/bin/mp2bug on Sun Dec 30 03:19:48
> 2007 GMT.
>
> -------------8<---------- End Bug Report --------------8<----------
>
> Note: Complete the rest of the details and post this bug report to
> modperl <at> perl.apache.org. To subscribe to the list send an empty
> email to modperl-subscribe@perl.apache.org.
>
>
Re: [bugreport] Internal Server Error output - but no error
Posted by Perrin Harkins <pe...@elem.com>.
On Dec 30, 2007 3:45 PM, Kate Yoak <ka...@yoak.com> wrote:
> returning 200 as a scalar from a content handler causes Apache to
> spit up "Internal Server Error" html despite a '200 OK' status.
> There is no error or warning in the log, nor any other indication of
> a problem
This is more of an apache thing than a mod_perl thing. The return
from a handler is not an HTTP status code but rather a code to tell
apache if the handler succeeded. The HTTP status is set through the
Apache2::RequestRec object or sent manually as a header. None of this
is changed by mod_perl, which just passes your return code through to
apache like any handler would.
- Perrin