Stuts behind a firewall.

[Grant Davies <gr...@bluetube.com>]

Hi,

I'm trying to test our first struts app with weblogic and our web.xml file
goes out to sun for the DTD to validate the web.xml file

We are behind a firewall that uses a proxy on port 8080 for http requests,
but our proxy requires us to login every time a new HTTP session is invoked.

Is there anyone who can help me configure our stuts for this?  I know this
may be more of a JAVA question that stuts, but I've been lucky enough
to use relaxed firewalls in the past.

Is it simpler just to remove the DTD url from the web.xml so it does not get
validated?

Thanks
Grant Davies
Insolutions Inc.

Re: Stuts behind a firewall.

["Craig R. McClanahan" <cr...@apache.org>]

On Tue, 31 Jul 2001, Bill Clinton wrote:

> Craig,
>     You say that "you should be able to run with no problems, without 
> trying to access the network."  But it seems to me that the internal 
> DTDs are used only after an attempt to access them via the network times 
> out.  Am I mistaken on this?  It seems that when I start my server 
> (either orion or resin) without internet access, it stalls for a pretty 
> good amount of time.
> 
>     While this timeout may be fine when you are demoing some apps on 
> your laptop, it can be a real pain in the a$$ while developing.  Is 
> there anyway to configure struts to use the internal DTDs without trying 
> to find them on the network first?  Or anyway to change the timeout?
> 

Whether or not it tries the network first is probably an issue of which
XML parser you're using.  For me, I've detected no discernable delay that
could be attributed to this.

I've tried Struts with both JAXP and Xerces in offline situations, and
turned on the Digester's debugging output.  I'm pretty much convinced that
neither of these parser's will *ever* try the network if an alternate
registration is available.

In SAX API terms, the parser is supposed to call the
resolveEntity() method of your document handler (i.e. the Digester main
class, for the purposes of this discussion).  If the
resolveEntity() method returns a valid input source (based on matching the
public ID *exactly*), then it should just ignore the system id that would
send it out the network.

When you run with the debugging detail level turned up, do you see the
message "Resolving to alternate DTD" in the log output?  If so (and the
parser tries to access the network anyway), it's a parser problem.  If
not, that means Struts does not think your public ID matches exactly the
one it is looking for.

> Bill
> 

Craig


> 
>     It seems that the internal copies of the DTDs are only accessed after
> 
> Craig R. McClanahan wrote:
> 
> > Struts maintains internal copies of the DTDs it uses (for
> > struts-config.xml and web.xml).  As long as you use the correct public
> > identifier on your configuration files (and your XML parser is correctly
> > implemented) you should be able to run with no problems, without trying to
> > access the network fr the DTDs.  In fact, I run Struts-based apps all the
> > time on a completely disconnected laptop (with Tomcat and JAXP/1.1) with
> > no problems.
> > 
> > Craig
> > 
> > 
> > On Mon, 16 Jul 2001, Grant Davies wrote:
> > 
> > 
> >> Hi,
> >> 
> >> I'm trying to test our first struts app with weblogic and our web.xml file
> >> goes out to sun for the DTD to validate the web.xml file
> >> 
> >> We are behind a firewall that uses a proxy on port 8080 for http requests,
> >> but our proxy requires us to login every time a new HTTP session is invoked.
> >> 
> >> Is there anyone who can help me configure our stuts for this?  I know this
> >> may be more of a JAVA question that stuts, but I've been lucky enough
> >> to use relaxed firewalls in the past.
> >> 
> >> Is it simpler just to remove the DTD url from the web.xml so it does not get
> >> validated?
> >> 
> >> Thanks
> >> Grant Davies
> >> Insolutions Inc.
> >> 
> >> 
> 
> 

Re: Stuts behind a firewall.

[Bill Clinton <bc...@snipermail.com>]

Craig,
    You say that "you should be able to run with no problems, without 
trying to access the network."  But it seems to me that the internal 
DTDs are used only after an attempt to access them via the network times 
out.  Am I mistaken on this?  It seems that when I start my server 
(either orion or resin) without internet access, it stalls for a pretty 
good amount of time.

    While this timeout may be fine when you are demoing some apps on 
your laptop, it can be a real pain in the a$$ while developing.  Is 
there anyway to configure struts to use the internal DTDs without trying 
to find them on the network first?  Or anyway to change the timeout?

Bill


    It seems that the internal copies of the DTDs are only accessed after

Craig R. McClanahan wrote:

> Struts maintains internal copies of the DTDs it uses (for
> struts-config.xml and web.xml).  As long as you use the correct public
> identifier on your configuration files (and your XML parser is correctly
> implemented) you should be able to run with no problems, without trying to
> access the network fr the DTDs.  In fact, I run Struts-based apps all the
> time on a completely disconnected laptop (with Tomcat and JAXP/1.1) with
> no problems.
> 
> Craig
> 
> 
> On Mon, 16 Jul 2001, Grant Davies wrote:
> 
> 
>> Hi,
>> 
>> I'm trying to test our first struts app with weblogic and our web.xml file
>> goes out to sun for the DTD to validate the web.xml file
>> 
>> We are behind a firewall that uses a proxy on port 8080 for http requests,
>> but our proxy requires us to login every time a new HTTP session is invoked.
>> 
>> Is there anyone who can help me configure our stuts for this?  I know this
>> may be more of a JAVA question that stuts, but I've been lucky enough
>> to use relaxed firewalls in the past.
>> 
>> Is it simpler just to remove the DTD url from the web.xml so it does not get
>> validated?
>> 
>> Thanks
>> Grant Davies
>> Insolutions Inc.
>> 
>> 

Re: Stuts behind a firewall.

["Craig R. McClanahan" <cr...@apache.org>]

Struts maintains internal copies of the DTDs it uses (for
struts-config.xml and web.xml).  As long as you use the correct public
identifier on your configuration files (and your XML parser is correctly
implemented) you should be able to run with no problems, without trying to
access the network fr the DTDs.  In fact, I run Struts-based apps all the
time on a completely disconnected laptop (with Tomcat and JAXP/1.1) with
no problems.

Craig


On Mon, 16 Jul 2001, Grant Davies wrote:

> Hi,
> 
> I'm trying to test our first struts app with weblogic and our web.xml file
> goes out to sun for the DTD to validate the web.xml file
> 
> We are behind a firewall that uses a proxy on port 8080 for http requests,
> but our proxy requires us to login every time a new HTTP session is invoked.
> 
> Is there anyone who can help me configure our stuts for this?  I know this
> may be more of a JAVA question that stuts, but I've been lucky enough
> to use relaxed firewalls in the past.
> 
> Is it simpler just to remove the DTD url from the web.xml so it does not get
> validated?
> 
> Thanks
> Grant Davies
> Insolutions Inc.
> 
>