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<H1 ALIGN="CENTER">Apache Server Frequently Asked Questions</H1>
</P>
<P>
The latest version of this FAQ is always available from the main
Apache web site, at
<<A
HREF="http://www.apache.org/docs/misc/FAQ"
REL="Help"
><SAMP>http://www.apache.org/docs/misc/FAQ</SAMP></A>>.
</P>
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<P>
If you are reading a text-only version of this FAQ, you may find numbers
enclosed in brackets (such as "[12]"). These refer to the list of
reference URLs to be found at the end of the document. These references
do not appear, and are not needed, for the hypertext version.
</P>
<H2>The Questions</H2>
<!-- Stuff to Add: -->
<!-- - can't bind to port 80 -->
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<!-- - address already in use -->
<!-- - mod_auth & passwd lines "user:pw:.*" - ++1st colon onward is -->
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<!-- - SSL: -->
<!-- - Can I use Apache-SSL for free in Canada? -->
<!-- - Why can't I use Apache-SSL in the U.S.? -->
<!-- - How can I found out how many visitors my site gets? -->
<!-- - How do I add a counter? -->
<!-- - How do I configure Apache as a proxy? -->
<!-- - What browsers support HTTP/1.1? -->
<!-- - What's the point of vhosts-by-name is there aren't any -->
<!-- - Is there an Apache for W95/WNT? -->
<!-- - Why does Apache die when a vhost can't be DNS-resolved? -->
<!-- - Why do I get "send lost connection" messages in my error -->
<!-- log? -->
<!-- - specifically consider .pdf files which seem to cause this -->
<!-- a lot when accessed via the plugin ... and also mention -->
<!-- how range-requests can cause bytes served < file size -->
<!-- - Why do directory indexes appear as garbage? (A: -lucb) -->
<!-- - How do I add a footer to all pages offered by my server? -->
<!-- - Fix midi question; a bigger problem than midi vs. x-midi is -->
<!-- the simple fact that older versions of Apache (and new ones -->
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<UL>
<LI><STRONG>Background</STRONG>
<OL START=1>
<LI><A HREF="#what">What is Apache?</A>
</LI>
<LI><A HREF="#why">Why was Apache created?</A>
</LI>
<LI><A HREF="#relate">How does The Apache Group's work relate to
other servers?</A>
</LI>
<LI><A HREF="#name">Why the name "Apache"?</A>
</LI>
<LI><A HREF="#compare">OK, so how does Apache compare to other servers?</A>
</LI>
<LI><A HREF="#tested">How thoroughly tested is Apache?</A>
</LI>
<LI><A HREF="#future">What are the future plans for Apache?</A>
</LI>
<LI><A HREF="#support">Whom do I contact for support?</A>
</LI>
<LI><A HREF="#more">Is there any more information on Apache?</A>
</LI>
<LI><A HREF="#where">Where can I get Apache?</A>
</LI>
</OL>
</LI>
<LI><STRONG>Technical Questions</STRONG>
<OL START=11>
<LI><A HREF="#what2do">"Why can't I ...? Why won't ...
work?" What to do in case of problems</A>
</LI>
<LI><A HREF="#compatible">How compatible is Apache with my existing
NCSA 1.3 setup?</A>
</LI>
<LI><A HREF="#CGIoutsideScriptAlias">How do I enable CGI execution
in directories other than the ScriptAlias?</A>
</LI>
<LI><A HREF="#premature-script-headers">What does it mean when my
CGIs fail with "<SAMP>Premature end of script
headers</SAMP>"?</A>
</LI>
<LI><A HREF="#ssi-part-i">How do I enable SSI (parsed HTML)?</A>
</LI>
<LI><A HREF="#ssi-part-ii">Why don't my parsed files get cached?</A>
</LI>
<LI><A HREF="#ssi-part-iii">How can I have my script output parsed?</A>
</LI>
<LI><A HREF="#proxy">Does or will Apache act as a Proxy server?</A>
</LI>
<LI><A HREF="#multiviews">What are "multiviews"?</A>
</LI>
<LI><A HREF="#fdlim">Why can't I run more than <<EM>n</EM>>
virtual hosts?</A>
</LI>
<LI><A HREF="#freebsd-setsize">Can I increase FD_SETSIZE on FreeBSD?</A>
</LI>
<LI><A HREF="#limitGET">Why do I keep getting "access denied" for
form POST requests?</A>
</LI>
<LI><A HREF="#passwdauth">Can I use my <SAMP>/etc/passwd</SAMP> file
for Web page authentication?</A>
</LI>
<LI><A HREF="#errordoc401">Why doesn't my <CODE>ErrorDocument
401</CODE> work?</A>
<LI><A HREF="#setgid">Why do I get "<SAMP>setgid: Invalid
argument</SAMP>" at startup?</A>
<LI><A HREF="#cookies1">Why does Apache send a cookie on every response?</A>
</LI>
<LI><A HREF="#cookies2">Why don't my cookies work, I even compiled in
<SAMP>mod_cookies</SAMP>?</A>
<LI><A HREF="#jdk1-and-http1.1">Why do my Java app[let]s give me plain text
when I request an URL from an Apache server?</A>
</LI>
<LI><A HREF="#putsupport">Why can't I publish to my Apache server
using PUT on Netscape Gold and other programs?</A>
<LI><A HREF="#fastcgi">Why isn't FastCGI included with Apache any
more?</A>
</LI>
<LI><A HREF="#nodelay">Why am I getting "<SAMP>httpd: could not
set socket option TCP_NODELAY</SAMP>" in my error log?</A>
</LI>
<LI><A HREF="#peerreset">Why am I getting "<SAMP>connection
reset by peer</SAMP>" in my error log?</A>
</LI>
<LI><A HREF="#nph-scripts">How can I get my script's output without
Apache buffering it?</A>
</LI>
<LI><A HREF="#linuxiovec">Why do I get complaints about redefinition
of "<CODE>struct iovec</CODE>" when compiling under Linux?</A>
</LI>
<LI><A HREF="#wheres-the-dump">The errorlog says Apache dumped core,
but where's the dump file?</A>
</LI>
<LI><A HREF="#dnsauth">Why isn't restricting access by host or domain name
working correctly?</A>
</LI>
<LI><A HREF="#SSL-i">Why doesn't Apache include SSL?</A>
</LI>
<LI><A HREF="#HPUX-core">Why do I get core dumps under HPUX using
HP's ANSI C compiler?</A>
</LI>
<LI><A HREF="#midi">How do I get Apache to send a MIDI file so the
browser can play it?</A>
</LI>
<LI><A HREF="#cantbuild">Why won't Apache compile with my
system's <SAMP>cc</SAMP>?</A>
</LI>
<LI><A HREF="#addlog">How do I add browsers and referrers to my
logs?</A>
</LI>
<LI><A HREF="#bind8.1">Why do I get an error about an undefined
reference to "<SAMP>__inet_ntoa</SAMP>" or other
<SAMP>__inet_*</SAMP> symbols?</A>
</LI>
<LI><A HREF="#set-servername">Why does accessing directories only work
when I include the trailing "/"
(<EM>e.g.</EM>, <SAMP>http://foo.domain.com/~user/</SAMP>) but
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