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From "Ivelin Ivanov" <ive...@apache.org>
Subject Re: WebServiceProxy
Date Tue, 23 Jul 2002 02:22:00 GMT

The HttpMultiClient maintains a session by default.

Interestingly the HttpClient has been a stable alpha for many months.
There are occasionally discussions for upgrading it to 1.0, but no one has
stepped up to do that.

HttpMultiClient is the one that has the richest functionality and is
preferred to use over the plain HttpClient.

Other than the JavaDoc, I have found much use from the unit tests and the
jakarta-commons discussion list.


Ivelin


----- Original Message -----
From: "Michael Wechner" <michael.wechner@wyona.org>
To: <cocoon-dev@xml.apache.org>
Sent: Monday, July 22, 2002 5:06 PM
Subject: Re: WebServiceProxy


>
>
> Ivelin Ivanov wrote:
>
> >Interesting case.
> >
> >Appears that two sessions are crossing each other's ways.
> >
> >I have tried multiple browsers with multiple sessions working against the
> >same Feedback wizard, to test for this.
> >WSProxy uses the jakarta HttpClient library, which saves and reuses the
> >cookies, thus the session, if started by the remote application.
> >
> >Maybe you will need to dump all HTTP headers to be able to track down the
> >problem.
> >Once you identify it, please let me know what it is, so we can discuss a
> >possible patch.
> >
>
> I will try to locate the problem.
>
> Can you give me a hint where you tell the HttpClient to save
> and reuse the cookies (or is this just default behaviour)?
>
> And what is the role of the HttpMultiClient?
>
> And do you know a URL of any "advanced" documentation of the HttpClient
> library form jakarta,
>  or is there only the JavaDoc?
>
> Thanks
>
> Michael
>
>
> >
> >
> >
> >Cheers,
> >
> >Ivelin
> >
> >
> >
> >----- Original Message -----
> >From: "Michael Wechner" <michael.wechner@wyona.org>
> >To: <cocoon-dev@xml.apache.org>
> >Sent: Sunday, July 21, 2002 10:29 PM
> >Subject: WebServiceProxy
> >
> >
> >>Hi
> >>
> >>I started to check the WebServiceProxy.
> >>
> >>I am using Linux (2.4) JDK1.3.1 and Tomcat 4.0.4-b3 and
> >>xml-cocoon2_20020719041901.tar.gz (2.1-dev)
> >>
> >>I included the following pipeline into the sitemap
> >>
> >>     <map:match pattern="HelloWorld">
> >>        <map:generate type="wsproxy"
> >>src="http://localhost:8080/wyona-cms/servlet/HelloWorld" labe
> >>l="xml"/>
> >>        <map:serialize type="xml"/>
> >>      </map:match>
> >>
> >>The HelloWorld servlet returns the following XML
> >>
> >><servlet class="org.wyona.cms.cocoon.generation.HelloWorld">
> >><request method="GET"><nosession/></request></servlet>
> >>
> >>Because I forgot the line <?xml version="1.0"?> I received an error,
> >>but then the problem was that "samples/webserviceproxy" didn't run
> >>anymore, which means I received a broken pipe error.
> >>
> >>After I inserted the line <?xml version="1.0"?> it seemed to be alright.
> >>
> >>But when I started to create a session, then it broke again. I checked
> >>the same cocoon instance with another browser, which didn't have a
session
> >>
> >yet.
> >
> >>It worked. As soon as I created a session, the WebServiceProxy crashed
for
> >>
> >this client.
> >
> >>Please see below the stack trace.
> >>I guess it must have something to do with "passing the session" resp.
> >>
> >"passing the cookies".
> >
> >>But I didn't find anything within your code, where you would do
something
> >>
> >like that.
> >
> >>
> >>Thanks
> >>
> >>Michael
> >>
> >>Original exception : java.io.IOException: Broken pipe
> >>at java.net.SocketOutputStream.socketWrite(Native Method)
> >>at java.net.SocketOutputStream.write(SocketOutputStream.java:71)
> >>at
> >>
>
>org.apache.commons.httpclient.HttpConnection.write(HttpConnection.java:363)
> >
> >>at
> >>
>
>org.apache.commons.httpclient.HttpConnection.print(HttpConnection.java:433)
> >
> >>at
> >>
>
>org.apache.commons.httpclient.HttpMethodBase.writeRequestHeaders(HttpMethod
B
> >ase.java:741)
> >
> >>at
> >>
>
>org.apache.commons.httpclient.HttpMethodBase.writeRequest(HttpMethodBase.ja
v
> >a:693)
> >
> >>at
> >>
>
>org.apache.commons.httpclient.HttpMethodBase.execute(HttpMethodBase.java:46
9
> >)
> >
> >>at
> >>
>
>org.apache.commons.httpclient.HttpMultiClient.executeMethod(HttpMultiClient
.
> >java:286)
> >
> >>at
> >>
>
>org.apache.cocoon.generation.WebServiceProxyGenerator.fetch(WebServiceProxy
G
> >enerator.java:254)
> >
> >>at
> >>
>
>org.apache.cocoon.generation.WebServiceProxyGenerator.generate(WebServicePr
o
> >xyGenerator.java:172)
> >
> >>at
> >>
>
>org.apache.cocoon.components.pipeline.AbstractProcessingPipeline.processXML
P
> >ipeline(AbstractProcessingPipeline.java:501)
> >
> >>at
> >>
>
>org.apache.cocoon.components.pipeline.impl.AbstractCachingProcessingPipelin
e
> >.processXMLPipeline(AbstractCachingProcessingPipeline.java:204)
> >
> >>at
> >>
>
>org.apache.cocoon.components.pipeline.AbstractProcessingPipeline.process(Ab
s
> >tractProcessingPipeline.java:476)
> >
> >>at
> >>
>
>org.apache.cocoon.components.treeprocessor.sitemap.SerializeNode.invoke(Ser
i
> >alizeNode.java:146)
> >
> >>at
> >>
>
>org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.inv
o
> >keNodes(AbstractParentProcessingNode.java:83)
> >
> >>at
> >>
>
>org.apache.cocoon.components.treeprocessor.sitemap.PreparableMatchNode.invo
k
> >e(PreparableMatchNode.java:160)
> >
> >>at
> >>
>
>org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.inv
o
> >keNodes(AbstractParentProcessingNode.java:107)
> >
> >>at
> >>
>
>org.apache.cocoon.components.treeprocessor.sitemap.PipelineNode.invoke(Pipe
l
> >ineNode.java:157)
> >
> >>at
> >>
>
>org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.inv
o
> >keNodes(AbstractParentProcessingNode.java:107)
> >
> >>at
> >>
>
>org.apache.cocoon.components.treeprocessor.sitemap.PipelinesNode.invoke(Pip
e
> >linesNode.java:152)
> >
> >>at
> >>
>
>org.apache.cocoon.components.treeprocessor.TreeProcessor.process(TreeProces
s
> >or.java:328)
> >
> >>at
> >>
>
>org.apache.cocoon.components.treeprocessor.TreeProcessor.process(TreeProces
s
> >or.java:309)
> >
> >>at
> >>
>
>org.apache.cocoon.components.treeprocessor.sitemap.MountNode.invoke(MountNo
d
> >e.java:131)
> >
> >>at
> >>
>
>org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.inv
o
> >keNodes(AbstractParentProcessingNode.java:83)
> >
> >>at
> >>
>
>org.apache.cocoon.components.treeprocessor.sitemap.PreparableMatchNode.invo
k
> >e(PreparableMatchNode.java:160)
> >
> >>at
> >>
>
>org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.inv
o
> >keNodes(AbstractParentProcessingNode.java:107)
> >
> >>at
> >>
>
>org.apache.cocoon.components.treeprocessor.sitemap.PipelineNode.invoke(Pipe
l
> >ineNode.java:157)
> >
> >>at
> >>
>
>org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.inv
o
> >keNodes(AbstractParentProcessingNode.java:107)
> >
> >>at
> >>
>
>org.apache.cocoon.components.treeprocessor.sitemap.PipelinesNode.invoke(Pip
e
> >linesNode.java:152)
> >
> >>at
> >>
>
>org.apache.cocoon.components.treeprocessor.TreeProcessor.process(TreeProces
s
> >or.java:328)
> >
> >>at
> >>
>
>org.apache.cocoon.components.treeprocessor.TreeProcessor.process(TreeProces
s
> >or.java:309)
> >
> >>at
> >>
>
>org.apache.cocoon.components.treeprocessor.sitemap.MountNode.invoke(MountNo
d
> >e.java:131)
> >
> >>at
> >>
>
>org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.inv
o
> >keNodes(AbstractParentProcessingNode.java:83)
> >
> >>at
> >>
>
>org.apache.cocoon.components.treeprocessor.sitemap.PreparableMatchNode.invo
k
> >e(PreparableMatchNode.java:160)
> >
> >>at
> >>
>
>org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.inv
o
> >keNodes(AbstractParentProcessingNode.java:107)
> >
> >>at
> >>
>
>org.apache.cocoon.components.treeprocessor.sitemap.PipelineNode.invoke(Pipe
l
> >ineNode.java:157)
> >
> >>at
> >>
>
>org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.inv
o
> >keNodes(AbstractParentProcessingNode.java:107)
> >
> >>at
> >>
>
>org.apache.cocoon.components.treeprocessor.sitemap.PipelinesNode.invoke(Pip
e
> >linesNode.java:152)
> >
> >>at
> >>
>
>org.apache.cocoon.components.treeprocessor.TreeProcessor.process(TreeProces
s
> >or.java:328)
> >
> >>at
> >>
>
>org.apache.cocoon.components.treeprocessor.TreeProcessor.process(TreeProces
s
> >or.java:309)
> >
> >>at org.apache.cocoon.Cocoon.process(Cocoon.java:585)
> >>at
org.apache.cocoon.servlet.CocoonServlet.service(CocoonServlet.java:997)
> >>at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
> >>at
> >>
>
>org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Applicatio
n
> >FilterChain.java:247)
> >
> >>at
> >>
>
>org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterC
h
> >ain.java:193)
> >
> >>at
> >>
>
>org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.j
a
> >va:243)
> >
> >>at
> >>
>
>org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:
5
> >66)
> >
> >>at
> >>
>
>org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
> >
> >>at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
> >>at
> >>
>
>org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.j
a
> >va:190)
> >
> >>at
> >>
>
>org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:
5
> >66)
> >
> >>at
> >>
>
>org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
> >
> >>at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
> >>at
>
>>org.apache.catalina.core.StandardContext.invoke(StandardContext.java:2347)
> >>at
> >>
>
>org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:18
0
> >)
> >
> >>at
> >>
>
>org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:
5
> >66)
> >
> >>at
> >>
>
>org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve
.
> >java:170)
> >
> >>at
> >>
>
>org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:
5
> >64)
> >
> >>at
> >>
>
>org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:17
0
> >)
> >
> >>at
> >>
>
>org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:
5
> >64)
> >
> >>at
> >>
> >org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:468)
> >
> >>at
> >>
>
>org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:
5
> >64)
> >
> >>at
> >>
>
>org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
> >
> >>at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
> >>at
> >>
>
>org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.jav
a
> >:174)
> >
> >>at
> >>
>
>org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:
5
> >66)
> >
> >>at
> >>
>
>org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
> >
> >>at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
> >>at
> >>
>
>org.apache.catalina.connector.http.HttpProcessor.process(HttpProcessor.java
:
> >1027)
> >
> >>at
> >>
>
>org.apache.catalina.connector.http.HttpProcessor.run(HttpProcessor.java:112
5
> >)
> >
> >>at java.lang.Thread.run(Thread.java:484)
> >>
> >>
> >>
> >>
> >>---------------------------------------------------------------------
> >>To unsubscribe, e-mail: cocoon-dev-unsubscribe@xml.apache.org
> >>For additional commands, email: cocoon-dev-help@xml.apache.org
> >>
> >
> >
> >---------------------------------------------------------------------
> >To unsubscribe, e-mail: cocoon-dev-unsubscribe@xml.apache.org
> >For additional commands, email: cocoon-dev-help@xml.apache.org
> >
>
>
>
> ---------------------------------------------------------------------
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>


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