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From "Ivelin Ivanov" <ive...@apache.org>
Subject Re: WebServiceProxy Hell
Date Sat, 23 Nov 2002 15:54:12 GMT
Tony,

Since the WSPG is a light wrapper around HttpClient,
it may not be that easy to answer.
The component is relatively new, so your help debugging the problem may be
valueable to everyone.

there are a set of working examples in the source code.
See a demo here: http://www.cocoonhive.org/portal/home

Ivelin


----- Original Message -----
From: "Tony Collen" <tc@hist.umn.edu>
To: "cocoon-users" <cocoon-users@xml.apache.org>
Sent: Friday, November 22, 2002 5:36 PM
Subject: WebServiceProxy Hell


> Agh!
>
> I'm trying to wrap my head arounc WebServiceProxyGenerator (and
> eventually XMLForms), and I'm having all sorts of problems. I'm trying
> to post to a servlet which I *know* returns valid xml, along with the
> <?xml version="1.0"?> header.   I couldn't get it working for the life
> of me, so I prototyped a simple PHP script to take post/get vars, and
> spit out XML:
>
> <?php
>
>     $mode = $HTTP_GET_VARS['Mode'];
>     $keywords = $HTTP_GET_VARS['keywords'];
>
>     header("Content-type: text/xml");
>
>     print "<?xml version=\"1.0\"?>\n";
>     print "<results>\n";
>     print "\t<mode>$mode</mode>\n";
>     print "\t<keywords>$keywords</keywords>\n";
>     print "</results>\n";
>
> ?>
>
> Alright, pretty simple.  Next I have my pipeline:
>
>          <map:match pattern="testingtwo">
>              <map:generate type="wsproxy"
> src="http://host/testPost.php?Mode=keyword&amp;keyword=age+race+sex">
>                  <map:parameter name="wsproxy-method" value="GET"/>
>              </map:generate>
>              <map:serialize type="xml"/>
>          </map:match>
>
>
> Alas, I get the following error after I access the pipeline:
>
>
>   Cocoon 2 - Internal server error
>
> ------------------------------------------------------------------------
>
> *type* fatal
>
> *message* _Error invoking remote service: java.io.IOException: Bad chunk
> size: 58 _
>
> *description* _org.apache.cocoon.ProcessingException: Error invoking
> remote service: java.io.IOException: Bad chunk size: 58 :
> java.io.IOException: Bad chunk size: 58 _
>
> *sender* org.apache.cocoon.servlet.CocoonServlet
>
> *source* Cocoon servlet
>
> *stack-trace
> *
>
> org.apache.cocoon.ProcessingException: Error invoking remote service:
java.io.IOException: Bad chunk size: 58 : java.io.IOException: Bad chunk
size: 58
> at
org.apache.cocoon.generation.WebServiceProxyGenerator.fetch(WebServiceProxyG
enerator.java:278)
> at
org.apache.cocoon.generation.WebServiceProxyGenerator.generate(WebServicePro
xyGenerator.java:172)
> at
org.apache.cocoon.components.pipeline.AbstractProcessingPipeline.processXMLP
ipeline(AbstractProcessingPipeline.java:515)
> at
org.apache.cocoon.components.pipeline.impl.AbstractCachingProcessingPipeline
.processXMLPipeline(AbstractCachingProcessingPipeline.java:204)
> at
org.apache.cocoon.components.pipeline.AbstractProcessingPipeline.process(Abs
tractProcessingPipeline.java:486)
> at
org.apache.cocoon.components.treeprocessor.sitemap.SerializeNode.invoke(Seri
alizeNode.java:149)
> at
org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invo
keNodes(AbstractParentProcessingNode.java:83)
> at
org.apache.cocoon.components.treeprocessor.sitemap.PreparableMatchNode.invok
e(PreparableMatchNode.java:162)
> at
org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invo
keNodes(AbstractParentProcessingNode.java:107)
> at
org.apache.cocoon.components.treeprocessor.sitemap.PipelineNode.invoke(Pipel
ineNode.java:153)
> at
org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invo
keNodes(AbstractParentProcessingNode.java:107)
> at
org.apache.cocoon.components.treeprocessor.sitemap.PipelinesNode.invoke(Pipe
linesNode.java:150)
> at
org.apache.cocoon.components.treeprocessor.TreeProcessor.process(TreeProcess
or.java:326)
> at
org.apache.cocoon.components.treeprocessor.TreeProcessor.process(TreeProcess
or.java:308)
>
> *<snip/>
> *
>
> *
> *The weird thing is when I reload the pipeline in my browser, I get a
> slightly different error:
>
> *message* _Error invoking remote service:
> org.apache.commons.httpclient.HttpRecoverableException: Error in parsing
> the status line from the response: unable to find line starting with
> "HTTP/"_
>
> *description* _org.apache.cocoon.ProcessingException: Error invoking
> remote service: org.apache.commons.httpclient.HttpRecoverableException:
> Error in parsing the status line from the response: unable to find line
> starting with "HTTP/":
> org.apache.commons.httpclient.HttpRecoverableException: Error in parsing
> the status line from the response: unable to find line starting with
"HTTP/"
> _
>
> _
> _I am getting the exact same behavior when I try to connect the wsproxy
> to a servlet that takes Post:
>
>          <map:match pattern="testing">
>              <map:generate type="wsproxy" label="xml"
>
src="http://host:8080/servlets/DevServlet?Mode=keyword&amp;keywords=age+race
+sex">
>                  <map:parameter name="wsproxy-method" value="POST"/>
>              </map:generate>
>              <map:serialize type="xml"/>
>          </map:match>
>
>
> I hate to complain about the documentation, since I'm trying to help out
> with it :)  I'm eventually going to work my way up to using XMLForms,
> but I need to get the basis working correctly first.   Can anyone give
> me some pointers on how to get this working?
>
>
> Thanks! ;)
>
> Tony
>
>
>
> *
> *
>
>
>
>
> ---------------------------------------------------------------------
> Please check that your question  has not already been answered in the
> FAQ before posting.     <http://xml.apache.org/cocoon/faq/index.html>
>
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>


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