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From "KUMAR,PANKAJ (HP-Cupertino,ex1)" <pankaj_ku...@hp.com>
Subject [C2.0.1]Problem with SOAP Logicsheet in accessing .Net Web Servic es
Date Tue, 26 Feb 2002 18:47:19 GMT
Hi,

I observed some bizzare behaviour and thought might as well report it.

I have written a simple web-application consisting of an XSP file (
zipcode-info.xsp ) and an XSL stylesheet ( zipcode-info.xsl ) that accesses
two SOAP services at http://alethea.net:80/webservices/LocalTime.asmx and
http://www.vbws.com:80/services/weatherretriever.asmx ( I found these at
http://www.xmethods.org  from .asmx, I guess they are .Net web services and
the HTTP server is IIS ) using the SOAP logicsheet. This application worked
fine from my office machine ( behind a firewall, so I had to specify http
proxy host and port ), but failed to work ( first, it threw an exception "-1
port out of range" and then when I explicitly specified port 80, it just
hung waiting for a response from the service ) from my home computer ( no
firewall ).

I should add that access to web services deployed under TomCat works fine (
as long as you explicitly specify port 80 for http ).

I looked into the code and figured out that the use of httpclient code (
from org.apache.commons.httpclient.* ) in file SOAPHelper.java is the
culprit. Replaced this file with another ( included in the mail ) that uses
the JDK classes for HTTP transport and everything worked fine.

Here are the files mentioned in this mail:
 <<zipcode-info.xsl>>  <<zipcode-info.xsp>>  <<SOAPHelper.java>>

To run this application, you need to place zipcode-info.xsl and
zipcode-info.xsp at a suitable place within your cocoon deployment and have
a suitable entry in the sitemap file. In my setup, I have the XSP and XSL
files in docs\samples\xscript and following entry in the sitemap:

   <map:match pattern="xscript/zipcode-info">
     <map:generate type="serverpages"
src="docs/samples/xscript/zipcode-info.xsp"/>
     <map:transform src="docs/samples/xscript/zipcode-info.xsl"/>
     <map:transform src="stylesheets/dynamic-page2html.xsl">
       <map:parameter name="view-source"
value="docs/samples/xscript/zipcode-info.xsp"/>
     </map:transform>
     <map:serialize/>
   </map:match>

Note: This application currently "streams-in" the SOAP documents returned
from web-services to the main XML document and relies on the stylesheet to
pickup appropriate fields. A better approach is perhaps to use XScript. I am
still investigating/experimenting with this option.

/Pankaj.

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