Chris,

<VBG>... it was not my intent to waste time.  Although, answering your
posts may be up for debate about whether it is time wasting or a
multi-faceted learning opportunity. My intent was simply to temper
your typically "bull in a china shop" responses.  And to indicate to
the poster that while the TCP-L may offer answers to TCP/IP questions,
the answer to the specific question of whether HTTP Server supports
xxxxxx will not necessarily be answered.  Surely a trip to the z/OS
related HTTP Server manuals (of which there are 2 available) would be
a better start.  Meanwhile in the spirit of being somewhat pedantic...

HTTP Server for z/OS V5R3 - See Basic Directives section
http://publibz.boulder.ibm.com/epubs/pdf/imwziu18.pdf

IBM Ported Tools for z/OS: IBM HTTP Server V7.0 - no specific references
http://publib.boulder.ibm.com/infocenter/wasinfo/v7r0/index.jsp?topic=/com.ibm.websphere.ihs.doc/info/welcome_ihs.html

Cheers from the cheap seats,
Rob Schramm


On Thu, Apr 28, 2011 at 12:04 PM, Chris Mason <[email protected]> wrote:
>
> Rob
>
> I really believe you are set on simply wasting time and effort here.
>
> There was a judiciously placed "generally" which shades to "almost always"
> and I would hazard the suggestion "always" for any general purpose
> application as I, well, just assume something called "HTTP Server for z/OS"
> would be.
>
> In order for a product to limit the destination address it would accept, it 
> would
> need to issue a bind() call which, rather than specifying 0.0.0.0, a.k.a.
> INADDR_ANY, would need to be an IP address which had been set up for a
> specific IP node implementation - massively unlikely, wouldn't you say? I 
> really
> can't see a product mandating a particular IP address!
>
> Now it is possible for an installation to configure a particular IP address 
> either
> through product customisation - although this in my experience is unusual - or
> by means of the BIND parameter of the PORT statement list entry for the
> relevant port number.
>
> These days there are "tricks" which can be introduced with the SRCIP
> statement with the SERVER parameter, just about the most counterintuitive
> naming of a statement in relation to its purpose that could have been devised!
>
> Now all of these options involves performing some sort of customisation
> somewhere and it is to be hoped that any such customisation would be done
> with the full knowledge of whomever was performing the customisation. I
> already indicated that the "local specialists supporting the IP component of
> Communications Server" should be involved. I would hope that anyone actually
> responsible for "HTTP Server for z/OS" would have known what he or she was
> doing in the generally unlikely case that the specification of an IP address
> through product customisation was possible.
>
> Note that the "sockaddr" or "name" structure used by the bind() call has room
> for only one IP address.
>
> Do you have any other suggestions?
>
> Chris Mason
>
> On Thu, 28 Apr 2011 10:08:23 -0400, Rob Schramm
> <[email protected]> wrote:
>
> >Chris,
> >
> >Unless you have specifically done the research for the HTTP server, there is
> >an assumption you are making that a Communication Server configuration is
> >the only way to perform any of the setup.  While CS can certainly be setup
> >to do it and would be involved regardless, there are more than a few
> >products that can perform binds and have specific configuration options to
> >govern them.
> >
> >Rob Schramm
> >
> >On Thu, Apr 28, 2011 at 9:50 AM, Chris Mason
> <[email protected]>wrote:
> >
> >> Maria
> >>
> >> This is a question for your local specialists supporting the IP component
> >> of
> >> Communications Server (CS).
> >>
> >> An application running on an IP node and relying on IP-based
> communications
> >> will generally place no limitations on the IP addresses assigned to that IP
> >> node.
> >>
> >> Thus any of the IP addresses which appear in what is called the "home"
> >> list,
> >> that is, the IP addresses corresponding to real or virtual interfaces to
> >> the IP
> >> node, can be used as the destination IP address for the application.
> >>
> >> Perhaps you should post again and describe more clearly what your
> >> requirements are.
> >>
> >> Note that, since this is a question probably relating more to the IP
> >> component
> >> of CS, you should be posting for the widest audience on the IBMTCP-L list:
> >>
> >> For IBMTCP-L subscribe / signoff / archive access instructions, send email
> >> to
> >> [email protected] with the message: INFO IBMTCP-L
> >>
> >> Chris Mason
> >>
> >> On Thu, 28 Apr 2011 08:12:36 -0500, Maria Mora
> >> <[email protected]> wrote:
> >>
> >> >Can you use Virtual Host or multiple IP addresses in HTTP Server for z/OS
> >> ver
> >> >5.3?
> >> >
> >> >Thanks,
> >> >Maria
> >--
> >Rob Schramm
>
> ----------------------------------------------------------------------
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--
Rob Schramm
Senior Systems Engineer
w: 513.305.6224

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