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Message-ID: <A5374D237E78D41195810090279CC91A07190E1B@xcup04.cup.hp.com>
From: "KUMAR,PANKAJ (HP-Cupertino,ex1)" <pankaj_kumar@hp.com>
To: "'cocoon-dev@xml.apache.org'" <cocoon-dev@xml.apache.org>
Subject: [C2.0.1]Problem with SOAP Logicsheet in accessing .Net Web Servic
	es
Date: Tue, 26 Feb 2002 10:47:19 -0800
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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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	name="zipcode-info.xsl"
Content-Transfer-Encoding: quoted-printable
Content-Disposition: attachment;
	filename="zipcode-info.xsl"

<?xml version=3D"1.0" encoding=3D"utf-8"?>=0A=
=0A=
<!--=0A=
  Author: Pankaj Kumar "pankaj_kumar@hp.com"=0A=
=0A=
  Date: Feb. 20, 2002=0A=
 -->=0A=
=0A=
<xsl:stylesheet=0A=
  version=3D"1.0"=0A=
  xmlns:xsl=3D"http://www.w3.org/1999/XSL/Transform"=0A=
  xmlns:soap=3D"http://schemas.xmlsoap.org/soap/envelope/"=0A=
  xmlns:s=3D"http://alethea.net/webservices/"=0A=
  xmlns:t=3D"http://tempuri.org/"=0A=
  xmlns:n=3D"http://sdexpo.com/2002/cocoon"=0A=
  exclude-result-prefixes=3D"soap s t"=0A=
  >=0A=
<!--=0A=
  <xsl:template match=3D"soap:Envelope">=0A=
    <b><xsl:value-of =
select=3D"soap:Body/s:LocalTimeByZipCodeResponse/s:LocalTimeByZipCodeRes=
ult"/></b>=0A=
  </xsl:template>=0A=
-->=0A=
  <xsl:template match=3D"n:local-weather">=0A=
    <b><xsl:value-of =
select=3D"../../soap:Envelope/soap:Body/t:CurrentWeather"/></b>=0A=
  </xsl:template>=0A=
=0A=
  <xsl:template match=3D"n:weather-updatetime">=0A=
    <b><xsl:value-of =
select=3D"../../soap:Envelope/soap:Body/t:CurrentWeather/LastUpdated"/><=
/b>=0A=
  </xsl:template>=0A=
  =0A=
  <xsl:template match=3D"n:weather-temp">=0A=
    <b><xsl:value-of =
select=3D"../../soap:Envelope/soap:Body/t:CurrentWeather/CurrentTemp"/><=
/b>=0A=
  </xsl:template>=0A=
  =0A=
  <xsl:template match=3D"n:weather-humidity">=0A=
    <b><xsl:value-of =
select=3D"../../soap:Envelope/soap:Body/t:CurrentWeather/Humidity"/></b>=
=0A=
  </xsl:template>=0A=
  =0A=
  <xsl:template match=3D"n:weather-barometer">=0A=
    <b><xsl:value-of =
select=3D"../../soap:Envelope/soap:Body/t:CurrentWeather/Barometer"/></b=
>=0A=
  </xsl:template>=0A=
  =0A=
  <xsl:template match=3D"n:weather-bdirection">=0A=
    <b><xsl:value-of =
select=3D"../../soap:Envelope/soap:Body/t:CurrentWeather/BarometerDirect=
ion"/></b>=0A=
  </xsl:template>=0A=
  =0A=
  <xsl:template match=3D"n:local-time">=0A=
    <b><xsl:value-of =
select=3D"../../soap:Envelope/soap:Body/s:LocalTimeByZipCodeResponse/s:L=
ocalTimeByZipCodeResult"/></b>=0A=
  </xsl:template>=0A=
  =0A=
  <xsl:template match=3D"soap:Envelope">=0A=
  </xsl:template>=0A=
  =0A=
  <xsl:template match=3D"@*|*|text()|processing-instruction()">=0A=
    <!-- Catch all template. Just pass along unmodified everything =
we=0A=
         don't handle. -->=0A=
    <xsl:copy>=0A=
      <xsl:apply-templates =
select=3D"@*|*|text()|processing-instruction()"/>=0A=
    </xsl:copy>=0A=
  </xsl:template>=0A=
=0A=
</xsl:stylesheet>=0A=

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	name="zipcode-info.xsp"
Content-Transfer-Encoding: quoted-printable
Content-Disposition: attachment;
	filename="zipcode-info.xsp"

<?xml version=3D"1.0" encoding=3D"ISO-8859-1"?>=0A=
=0A=
<!--=0A=
  Author: Ovidiu Predescu "ovidiu@cup.hp.com"=0A=
=0A=
  Date: October 9, 2001=0A=
 -->=0A=
=0A=
<xsp:page=0A=
  language=3D"java"=0A=
  xmlns:xsp=3D"http://apache.org/xsp"=0A=
  xmlns:xsp-request=3D"http://apache.org/xsp/request/2.0"=0A=
  xmlns:xscript=3D"http://apache.org/xsp/xscript/1.0"=0A=
  xmlns:soap=3D"http://apache.org/xsp/soap/3.0"=0A=
  xmlns:n=3D"http://sdexpo.com/2002/cocoon"=0A=
  >=0A=
  =0A=
  <page>=0A=
=0A=
   <title>Location Information from ZipCode</title>=0A=
=0A=
   <content>=0A=
=0A=
   <xsp:logic>=0A=
    String zipcode =3D request.getParameter("zipcode");=0A=
=0A=
    if (zipcode =3D=3D null || zipcode.equals("")) {=0A=
=0A=
       <para>This example demonstrates the use of Cocoon to build a =
simple=0A=
       application that invokes Web Services to get information about =
a=0A=
       geographical location.</para>=0A=
=0A=
       <para>Please enter a US zipcode: </para>=0A=
       <form href=3D"zipcode-info">=0A=
         <input name=3D"zipcode" type=3D"text" value=3D"95051"/>=0A=
         <input value=3D"Get Info." type=3D"submit"/>=0A=
       </form>=0A=
    }=0A=
    else {=0A=
      <soap:call =
url=3D"http://alethea.net:80/webservices/LocalTime.asmx"=0A=
                 =
method=3D"http://alethea.net/webservices/LocalTimeByZipCode">=0A=
        <LocalTimeByZipCode>=0A=
          <ZipCode xsi:type=3D"xsd:string" =
xmlns:xsi=3D"http://www.w3.org/1999/XMLSchema-instance" =
xmlns:xsd=3D"http://www.w3.org/1999/XMLSchema">=0A=
            <xsp-request:get-parameter name=3D"zipcode"/>=0A=
          </ZipCode>=0A=
        </LocalTimeByZipCode>=0A=
      </soap:call>=0A=
=0A=
      <soap:call =
url=3D"http://www.vbws.com:80/services/weatherretriever.asmx"=0A=
                 method=3D"http://tempuri.org/GetWeather">=0A=
        <s0:GetWeather xmlns:s0=3D"http://tempuri.org/">=0A=
          <zipCode xsi:type=3D"xsd:string" =
xmlns:xsi=3D"http://www.w3.org/1999/XMLSchema-instance" =
xmlns:xsd=3D"http://www.w3.org/1999/XMLSchema">=0A=
            <xsp-request:get-parameter name=3D"zipcode"/>=0A=
          </zipCode>=0A=
        </s0:GetWeather>=0A=
      </soap:call>=0A=
=0A=
      <para>Information for <xsp:expr>zipcode</xsp:expr> location =
:</para>=0A=
      =0A=
      <para>Local Time : <n:local-time/> </para>=0A=
      <para>Weather Conditions ( updated at <n:weather-updatetime/> ): =
</para>=0A=
      <para>Current Temperature: <n:weather-temp/></para>=0A=
      <para>Current Humidity   : <n:weather-humidity/></para>=0A=
      <para>Current Barometer  : <n:weather-barometer/></para>=0A=
      <para>Barometer Direction: <n:weather-bdirection/></para>=0A=
      =0A=
      <form href=3D"zipcode-info">=0A=
        <input value=3D"Back" type=3D"submit"/>=0A=
      </form>=0A=
    }=0A=
  </xsp:logic>=0A=
=0A=
  </content>=0A=
=0A=
  </page>=0A=
</xsp:page>=0A=

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	filename="SOAPHelper.java"

/***********************************************************************=
******=0A=
 * Copyright (C) The Apache Software Foundation. All rights reserved.   =
     *=0A=
 * =
------------------------------------------------------------------------=
- *=0A=
 * This software is published under the terms of the Apache Software =
License *=0A=
 * version 1.1, a copy of which has been included  with this =
distribution in *=0A=
 * the LICENSE file.                                                    =
     *=0A=
 =
************************************************************************=
*****/=0A=
package org.apache.cocoon.components.language.markup.xsp;=0A=
=0A=
import java.io.BufferedReader;=0A=
import java.io.IOException;=0A=
import java.io.InputStream;=0A=
import java.io.InputStreamReader;=0A=
import java.io.OutputStream;=0A=
import java.net.MalformedURLException;=0A=
import java.net.URL;=0A=
import java.util.HashMap;=0A=
import org.apache.avalon.framework.component.ComponentException;=0A=
import org.apache.avalon.framework.component.ComponentManager;=0A=
import org.apache.cocoon.ProcessingException;=0A=
import org.apache.cocoon.components.xscript.XScriptManager;=0A=
import org.apache.cocoon.components.xscript.XScriptObject;=0A=
import org.apache.cocoon.components.xscript.XScriptObjectInlineXML;=0A=
=0A=
import java.net.URLConnection;=0A=
import java.io.*;=0A=
=0A=
import org.xml.sax.InputSource;=0A=
=0A=
/**=0A=
 * Helper for the SOAP logicsheet.=0A=
 *=0A=
 * @author <a href=3D"mailto:ovidiu@cup.hp.com">Ovidiu Predescu</a>=0A=
 * @since July 16, 2001=0A=
 */=0A=
public class SOAPHelper=0A=
{=0A=
  XScriptManager xscriptManager;=0A=
  URL url;=0A=
  String action =3D "";=0A=
  XScriptObject xscriptObject;=0A=
  char[] buf =3D new char[4096];=0A=
=0A=
  public SOAPHelper(ComponentManager manager, String urlContext, String =
url,=0A=
                    String action, XScriptObject xscriptObject)=0A=
    throws MalformedURLException, ComponentException=0A=
  {=0A=
    this.xscriptManager =3D =
(XScriptManager)manager.lookup(XScriptManager.ROLE);=0A=
    URL context =3D new URL(urlContext);=0A=
    this.url =3D new URL(context, url);=0A=
    this.action =3D action;=0A=
    this.xscriptObject =3D xscriptObject;=0A=
  }=0A=
=0A=
  public XScriptObject invoke()=0A=
    throws ProcessingException=0A=
  {=0A=
=0A=
    try {=0A=
      if (action =3D=3D null || action.equals(""))=0A=
        action =3D "\"\"";=0A=
		URLConnection con =3D url.openConnection();=0A=
		con.setDoInput(true);=0A=
		con.setDoOutput(true);=0A=
		con.setUseCaches(false);=0A=
		//con.setRequestProperty("CONTENT_LENGTH", "" + =
postDataFile.length());=0A=
		con.setRequestProperty("Content-type", "text/xml; =
charset=3D\"utf-8\"");=0A=
		con.setRequestProperty("SOAPAction", action);=0A=
=0A=
		//BufferedReader br =3D new BufferedReader(new InputStreamReader(new =
FileInputStream(postDataFile)));=0A=
		InputSource saxInputStream =3D xscriptObject.getInputSource();=0A=
		InputStream is =3D saxInputStream.getByteStream();=0A=
        InputStreamReader isr =3D new InputStreamReader(is);=0A=
        BufferedReader br =3D new BufferedReader(isr);=0A=
=0A=
		BufferedWriter bw =3D new BufferedWriter(new =
OutputStreamWriter(con.getOutputStream()));=0A=
=0A=
		int nread =3D 0;=0A=
		int nwrote =3D 0;=0A=
		while ((nread =3D br.read(buf, 0, buf.length)) > 0){=0A=
			bw.write(buf, 0, nread);=0A=
			nwrote +=3D nread;=0A=
		}=0A=
		bw.flush();=0A=
		bw.close();=0A=
		br.close();=0A=
System.out.println("Wrote " + nwrote + " bytes to " + url);=0A=
=0A=
		br =3D new BufferedReader(new =
InputStreamReader(con.getInputStream()));=0A=
		CharArrayWriter caw =3D new CharArrayWriter();=0A=
=0A=
		nwrote =3D 0;=0A=
		while ((nread =3D br.read(buf, 0, buf.length)) > 0){=0A=
			caw.write(buf, 0, nread);=0A=
			nwrote +=3D nread;=0A=
		}=0A=
System.out.println("Read " + nwrote + " bytes from " + url);=0A=
=0A=
        return new XScriptObjectInlineXML(xscriptManager, =
caw.toString());=0A=
    }=0A=
    catch (Exception ex) {=0A=
      throw new ProcessingException("Error invoking remote service: " + =
ex,=0A=
                                    ex);=0A=
    }=0A=
  }=0A=
}=0A=


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