Commit 26fdad43 authored by Ken Coar's avatar Ken Coar
Browse files

Add a FAQ about Y2K compliance. 

Submitted by:	Lars Eilebrecht <Lars.Eilebrecht@unix-ag.org>


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@79284 13f79535-47bb-0310-9956-ffa450edef68
parent e5546994

docs/manual/misc/FAQ.html

+51 −2
Changes for docs/manual/misc/FAQ.html: 51 added lines, 2 removed lines.
Original line number Diff line number Diff line
@@ -15,7 +15,7 @@ 
  <!--#include virtual="header.html" -->

  <H1 ALIGN="CENTER">Apache Server Frequently Asked Questions</H1>

  <P>

  $Revision: 1.88 $ ($Date: 1997/09/17 16:32:21 $)

  $Revision: 1.89 $ ($Date: 1997/09/18 13:00:15 $)

  </P>

  <P>

  The latest version of this FAQ is always available from the main
@@ -252,6 +252,8 @@ 
   <LI><A HREF="#cgi-spec">Where can I find the &quot;CGI

    specification&quot;?</A>

   </LI>

   <LI><A HREF="#year2000">Is Apache Year 2000 compliant?</A>

   </LI>

  </OL>

 </LI>

</UL>
@@ -1354,7 +1356,9 @@ 
  <A HREF="../mod/core.html#serverroot">ServerRoot</A>

  directory. As of Apache version 1.3, the location can be set <EM>via</EM>

  the

  <A HREF="../mod/core.html#coredumpdirectory">CoreDumpDirectory</A>

  <A

   HREF="../mod/core.html#coredumpdirectory"

  ><SAMP>CoreDumpDirectory</SAMP></A>

  directive to a different directory. Make sure that this directory is

  writable by the user the server runs as (as opposed to the user the server

  is <EM>started</EM> as).
@@ -2054,6 +2058,51 @@ 
  </P>

  <HR>

 </LI>

 <LI><A NAME="year2000">

      <STRONG>Is Apache Year 2000 compliant?</STRONG>

     </A>

  <P>

  Yes, Apache is Year 2000 compliant.

  </P>

  <P>

  Apache internally never stores years as two digits.

  On the HTTP protocol level RFC1123-style addresses are generated

  which is the only format a HTTP/1.1-compliant server should

  generate. To be compatible with older applications Apache

  recognizes ANSI C's <CODE>asctime()</CODE> and

  RFC850-/RFC1036-style date formats, too.

  The <CODE>asctime()</CODE> format uses four-digit years,

  but the RFC850 and RFC1036 date formats only define a two-digit year.

  If Apache sees such a date with a value less than 70 it assumes that

  the century is <SAMP>20</SAMP> rather than <SAMP>19</SAMP>.

  </P>

  <P>

  Some aspects of Apache's output may use two-digit years, such as the

  automatic listing of directory contents provided by

  <A

   HREF="../mod/mod_autoindex.html"

  ><SAMP>mod_autoindex</SAMP></A>

  with the

  <A

   HREF="../mod/mod_autoindex.html#indexoptions"

  ><SAMP>FancyIndexing</SAMP></A>

  option enabled, but it is improper to depend upon such displays for

  specific syntax.  And even that issue is being addressed by the

  developers; a future version of Apache should allow you to format that

  display as you like.

  </P>

  <P>

  Although Apache is Year 2000 compliant, you may still get problems

  if the underlying OS has problems with dates past year 2000

  (<EM>e.g.</EM>, OS calls which accept or return year numbers).

  Most (UNIX) systems store dates internally as signed 32-bit integers

  which contain the number of seconds since 1<SUP>st</SUP> January 1970, so

  the magic boundary to worry about is the year 2038 and not 2000.

  But modern operating systems shouldn't cause any trouble

  at all.

  </P>

  <HR>

 </LI>



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