Very Computer

We would like to have several different WWW servers running on the
same physical computer.  Each WWW server corresponds to a different
Domain Name.  Each Domain Name will  have a CNAME record pointing
to the same computer.

Is there any way to get WWW server to tell which is coming in as.

For example, assume that our two server names are
  www.zing.com
  www.rotgut.com

Both are duly registered with internic.  Both have CNAME records
pointing to a machine at 143.43.290.45

We would like a net surfer coming in
as
   http://ww.zing.com/home.html

to get a different home page than someone coming in as

   http://ww.rotgut.com/home.html

We don't want to force them to type a different port number when they
enter the URL in their browser.  We don't want a different home page name.

In general, we may want to do something similar with telnet, disambiguating
between multiple Domain Names that point to the same IP address and having
a program behave differently as a funciton of which domain name service
the person uses.

Is this possible? how?

Quote:> For example, assume that our two server names are
>   www.zing.com
>   www.rotgut.com

> Both are duly registered with internic.  Both have CNAME records
> pointing to a machine at 143.43.290.45

> We would like a net surfer coming in
> as
>    http://ww.zing.com/home.html

> to get a different home page than someone coming in as

>    http://ww.rotgut.com/home.html

> We don't want to force them to type a different port number when they
> enter the URL in their browser.  We don't want a different home page name.

However, if you use TCP-Wrappers to listen to the WWW port, and then based
on the domain name specified by the remote end, fire up a different WWW
server, that would probably be done most easily with multiple A records
instead of the CNAME records -- I don't know if the name would get
canonicalized out before the query got to your end or not.

If you're interested in exploring TCP-Wrappers in this fashion, I recommend
you fire up your local archie client and search for "tcp-wrappers" or
"tcp_wrappers".  I think an old version may be found somewhere on
ftp.uu.net, but I can't recall where.  Last I heard, the most recent
version was 7.2, which I don't think is found too many places outside the
official anonymous ftp site for it that Wietse Venema (I think I spelled
that right) has set up.  I've pulled 7.2 for use on our machines at work,
and it appears that the improvements over 7.1 and 7.0 are fairly minor and
mostly cosmetic, but as far as I'm concerned, it's best to start with the
most recent version and not futz around with the older versions and end up
possibly needing to upgrade anyway.

--

The comp.mail.sendmail FAQ is located at:

    <URL:ftp://rtfm.mit.edu/pub/usenet/news.answers/mail/sendmail-faq>

Want to know about the latest version of BIND?  Check out:

    <URL:http://www.isc.org/isc/>

: Query regarding domain name services.

: We would like to have several different WWW servers running on the
: same physical computer.  Each WWW server corresponds to a different
: Domain Name.  Each Domain Name will  have a CNAME record pointing
: to the same computer.

: Is there any way to get WWW server to tell which is coming in as.

: For example, assume that our two server names are
:   www.zing.com
:   www.rotgut.com

: Both are duly registered with internic.  Both have CNAME records
: pointing to a machine at 143.43.290.45

: We would like a net surfer coming in
: as
:    http://ww.zing.com/home.html

: to get a different home page than someone coming in as

:    http://ww.rotgut.com/home.html

: We don't want to force them to type a different port number when they
: enter the URL in their browser.  We don't want a different home page name.

: In general, we may want to do something similar with telnet, disambiguating
: between multiple Domain Names that point to the same IP address and having
: a program behave differently as a funciton of which domain name service
: the person uses.

: Is this possible? how?

Quote:>   Is there any way to get WWW server to tell which is coming in as.

>   Is this possible? how?

There are also patches available for NCSA 1.3 and CERN I believe.

Quote:>more than more IP. read the rest of the newsgroup dude.

Quote:>: We would like to have several different WWW servers running on the
>: same physical computer.  Each WWW server corresponds to a different
>: Domain Name.  Each Domain Name will  have a CNAME record pointing
>: to the same computer.

------------------------------------------------------------------

Enterprise PLC | HTTP://WWW.ENTERPRISE.NET

Leading Internet Services for the British Isles.

------------------------------------------------------------------

Quote:>Query regarding domain name services.

>We would like to have several different WWW servers running on the
>same physical computer.  Each WWW server corresponds to a different
>Domain Name.  Each Domain Name will  have a CNAME record pointing
>to the same computer.

>Is there any way to get WWW server to tell which is coming in as.

>For example, assume that our two server names are
>  www.zing.com
>  www.rotgut.com

>Both are duly registered with internic.  Both have CNAME records
>pointing to a machine at 143.43.290.45

>We would like a net surfer coming in
>as
>   http://ww.zing.com/home.html

>to get a different home page than someone coming in as

>   http://ww.rotgut.com/home.html

>We don't want to force them to type a different port number when they
>enter the URL in their browser.  We don't want a different home page name.

>In general, we may want to do something similar with telnet, disambiguating
>between multiple Domain Names that point to the same IP address and having
>a program behave differently as a funciton of which domain name service
>the person uses.

>Is this possible? how?

Good luck.

Adrian.

--------------------------------------------------------------------------------------------

Enterprise PLC  |   HTTP://WWW.ENTERPRISE.NET

Leading Internet Services in the British Isles.

--------------------------------------------------------------------------------------------

The current HTTP protocol doesn't include a way for the browser to include
the hostname portion of the URL in the request.  This is only done when the
browser is sending the request to a proxy server (since the proxy obviously
needs to know who to forward the request to), not to the server named in
the URL.

I've heard that the next revision of the HTTP protocol will include the
full URL in the request, since this dispatching is such a common need.
--
Barry Margolin
BBN Planet Corporation, Cambridge, MA

Quote:>>Is it possible that the browser passes along to the server the entire URL
>>that it originally requested and somehow the server could translate that into
>>an environment variable.
>Are you asking or telling?  Your sentence starts with "Is it", but it
>doesn't end with a question mark, so it's hard to tell whether you
>transposed the first two words or just forgot the question mark.

Quote:>The current HTTP protocol doesn't include a way for the browser to include
>the hostname portion of the URL in the request.  This is only done when the
>browser is sending the request to a proxy server (since the proxy obviously
>needs to know who to forward the request to), not to the server named in
>the URL.
>I've heard that the next revision of the HTTP protocol will include the
>full URL in the request, since this dispatching is such a common need.

Robert Gourgon

Jacques.

--- Jacques Caron - Pressimage Telematique
    Mail:   5/7 rue Raspail - 93108 Montreuil Cedex - France

    Tel:    +33 (1) 49 88 63 56
    Fax:    +33 (1) 49 88 63 64