Trying to be a consumer

I my last post i looked at the SOAP on he wire between the WSRP4J producer and proxy portlet. After that I wanted to try it out for my self by writing a simple consumer (client) using axis2. I should be very simple since the standard contains the webservice interface (WSDL) which i nicely decomposed into seperate files for:

• service definition
• binding definitions
• interface definitions
• type definitions

the service definitions are like

<?xml version="1.0" encoding="UTF-8"?>
<wsdl:definitions targetNamespace="urn:oasis:names:tc:wsrp:v1:wsdl"
                  xmlns:bind="urn:oasis:names:tc:wsrp:v1:bind"
                  xmlns="http://schemas.xmlsoap.org/wsdl/"
                  xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/"
                  xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/">

  <import namespace="urn:oasis:names:tc:wsrp:v1:bind"
          location="wsrp_v1_bindings.wsdl"/>

  <wsdl:service name="WSRPService">
    <wsdl:port binding="bind:WSRP_v1_Markup_Binding_SOAP" name="WSRPBaseService">
      <soap:address location="http://my.service:8080/WSRPService"/>
    </wsdl:port>
    <wsdl:port binding="bind:WSRP_v1_ServiceDescription_Binding_SOAP" name="WSRPServiceDescriptionService">
      <soap:address location="http://my.service:8080/WSRPService"/>
    </wsdl:port>
    <wsdl:port binding="bind:WSRP_v1_Registration_Binding_SOAP" name="WSRPRegistrationService">
      <soap:address location="http://my.service:8080/WSRPService"/>
    </wsdl:port>
    <wsdl:port binding="bind:WSRP_v1_PortletManagement_Binding_SOAP" name="WSRPPortletManagementService">
      <soap:address location="http://my.service:8080/WSRPService"/>
    </wsdl:port>
  </wsdl:service>
</wsdl:definitions>

I first first tried to change the endpoints and run i through the Axis2 Codegen, but I only generates the Markup Binding, that is the others are generated by the can't overwrite it. I've therefore changed it to:

<?xml version="1.0" encoding="UTF-8"?>
<wsdl:definitions
  targetNamespace="urn:oasis:names:tc:wsrp:v1:wsdl"
  xmlns:bind="urn:oasis:names:tc:wsrp:v1:bind"
  xmlns="http://schemas.xmlsoap.org/wsdl/"
  xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/"
  xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/">

  <import
    namespace="urn:oasis:names:tc:wsrp:v1:bind"
    location="wsrp_v1_bindings.wsdl" />

  <wsdl:service name="WSRPBaseService">
    <wsdl:port
      binding="bind:WSRP_v1_Markup_Binding_SOAP"
      name="WSRPBaseService">
      <soap:address location="http://localhost:8080/wsrp4j-producer/services/WSRPBaseService" />
    </wsdl:port>
  </wsdl:service>

  <wsdl:service name="WSRPServiceDescriptionService">
    <wsdl:port
      binding="bind:WSRP_v1_ServiceDescription_Binding_SOAP"
      name="WSRPServiceDescriptionService">
      <soap:address location="http://localhost:8080/wsrp4j-producer/services/WSRPServiceDescriptionService" />
    </wsdl:port>

  </wsdl:service>

  <wsdl:service name="WSRPRegistrationService">
    <wsdl:port
      binding="bind:WSRP_v1_Registration_Binding_SOAP"
      name="WSRPRegistrationService">
      <soap:address location="http://localhost:8080/wsrp4j-producer/services/WSRPRegistrationService" />
    </wsdl:port>
  </wsdl:service>

  <wsdl:service name="WSRPPortletManagementService">
    <wsdl:port
      binding="bind:WSRP_v1_PortletManagement_Binding_SOAP"
      name="WSRPPortletManagementService">
      <soap:address location="http://localhost:8080/wsrp4j-producer/services/WSRPPortletManagementService" />
    </wsdl:port>
  </wsdl:service>
</wsdl:definitions>

So I've changed the ports to each have their own service (and runs Codegen four times, for each service name (@name). This works allright for me except that's I using four services instead of one, which does take an extra effort for ex. session handling that could have been clean out of the Axis2 box (dist). This is an example of the flexibility of WSDL, that seemingly the same can be done i several ways, even though I'm not sure what the semantic differences are. The W3C Note for WSDL 1.1 says the following about services: A service groups a set of related ports together, and that ports within a service have the following relationship:

• None of the ports communicate with each other (e.g. the output of one port is not the input of another).
• If a service has several ports that share a port type, but employ different bindings or addresses, the ports are alternatives. Each port provides semantically equivalent behavior (within the transport and message format limitations imposed by each binding). This allows a consumer of a WSDL document to choose particular port(s) to communicate with based on some criteria (protocol, distance, etc.).
• By examining it's ports, we can determine a service's port types. This allows a consumer of a WSDL document to determine if it wishes to communicate to a particular service based whether or not it supports several port types. This is useful if there is some implied relationship between the operations of the port types, and that the entire set of port types must be present in order to accomplish a particular task.

Maybe the last bullet does imply that what I'm doing is not what should be done if I exposed it, but since I'm only consuming at therefore use to generate my stubs it doesn't really matter.

Web traffic for the WSRP4J demo

Work in slow progress Following the README with the WSRP4J dist I succeded in getting the demo running and heres a dump of the web traffic it generates as captured with the tcpmon tool. The traffic is between the wsrp4j proxy portlet and the wsrp4j-producer (forwarding the jsr168 testportlet that comes with wsrp4j). The portlet page that these (identical) portlets end up in looks like.

What do you have to offer

The first thing the proxyportlet does it to query the wsrp4j-producer about what portlets are available (done with axis 1.4 which the wsrp4j proxyportlet uses):

POST /wsrp4j-producer/services/WSRPServiceDescriptionService HTTP/1.0
Content-Type: text/xml; charset=utf-8
Accept: application/soap+xml, application/dime, multipart/related, text/*
User-Agent: Axis/1.4
Host: localhost:9101
Cache-Control: no-cache
Pragma: no-cache
SOAPAction: "urn:oasis:names:tc:wsrp:v1:getServiceDescription"
Content-Length: 386

<?xml version="1.0" encoding="UTF-8"?>
<soapenv:Envelope
  xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/"
  xmlns:xsd="http://www.w3.org/2001/XMLSchema"
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
  <soapenv:Body>
    <getServiceDescription xmlns="urn:oasis:names:tc:wsrp:v1:types">
      <registrationContext xsi:nil="true" />
    </getServiceDescription>
  </soapenv:Body>
</soapenv:Envelope>

and the answer is

HTTP/1.1 200 OK
Server: Apache-Coyote/1.1
Content-Type: text/xml;charset=utf-8
Date: Tue, 06 Mar 2007 09:25:03 GMT
Connection: close

<?xml version="1.0" encoding="utf-8"?>
<soapenv:Envelope
  xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/"
  xmlns:xsd="http://www.w3.org/2001/XMLSchema"
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
  <soapenv:Body>
    <getServiceDescriptionResponse
      xsi:type="ns1:ServiceDescription"
      xmlns="urn:oasis:names:tc:wsrp:v1:types"
      xmlns:ns1="urn:oasis:names:tc:wsrp:v1:types">
      <ns1:requiresRegistration xsi:type="xsd:boolean">true</ns1:requiresRegistration>
      <ns1:requiresInitCookie xsi:type="ns1:CookieProtocol">perGroup</ns1:requiresInitCookie>
    </getServiceDescriptionResponse>
  </soapenv:Body>
</soapenv:Envelope>

which is kind of an no-answer since it just indicates the it requires registration prior to any thing (requiresRegistration), and that it requires that cookies are initialized per group (requiresInitCookie) more about that later.

All right I'll register
Since it requires registration there's only one thing to do:

POST /wsrp4j-producer/services/WSRPRegistrationService HTTP/1.0
Content-Type: text/xml; charset=utf-8
Accept: application/soap+xml, application/dime, multipart/related, text/*
User-Agent: Axis/1.4
Host: localhost:9101
Cache-Control: no-cache
Pragma: no-cache
SOAPAction: "urn:oasis:names:tc:wsrp:v1:register"
Content-Length: 469

<?xml version="1.0" encoding="UTF-8"?>
<soapenv:Envelope
  xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/"
  xmlns:xsd="http://www.w3.org/2001/XMLSchema"
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
  <soapenv:Body>
    <register xmlns="urn:oasis:names:tc:wsrp:v1:types">
      <consumerName>WSRP4J Proxy Portlet</consumerName>
      <consumerAgent>WSRP4J Proxy Portlet</consumerAgent>
      <methodGetSupported>false</methodGetSupported>
    </register>
  </soapenv:Body>
</soapenv:Envelope>

and the producer accepts with:

HTTP/1.1 200 OK
Server: Apache-Coyote/1.1
Content-Type: text/xml;charset=utf-8
Date: Tue, 06 Mar 2007 09:25:03 GMT
Connection: close

<?xml version="1.0" encoding="utf-8"?>
<soapenv:Envelope
  xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/"
  xmlns:xsd="http://www.w3.org/2001/XMLSchema"
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
  <soapenv:Body>
    <registerResponse xmlns="urn:oasis:names:tc:wsrp:v1:types">
      <registrationHandle>0:0:0:0:0:0:0:1_1173173104036_0</registrationHandle>
    </registerResponse>
  </soapenv:Body>
</soapenv:Envelope>

so the registrationHandle is 0:0:0:0:0:0:0:1_1173173104036_0.

Okay now show me what you offer After having registred it's now possible to actually get the serviceDescription:

POST /wsrp4j-producer/services/WSRPServiceDescriptionService HTTP/1.0
Content-Type: text/xml; charset=utf-8
Accept: application/soap+xml, application/dime, multipart/related, text/*
User-Agent: Axis/1.4
Host: localhost:9101
Cache-Control: no-cache
Pragma: no-cache
SOAPAction: "urn:oasis:names:tc:wsrp:v1:getServiceDescription"
Content-Length: 464

<?xml version="1.0" encoding="UTF-8"?>
<soapenv:Envelope
  xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/"
  xmlns:xsd="http://www.w3.org/2001/XMLSchema"
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
  <soapenv:Body>
    <getServiceDescription xmlns="urn:oasis:names:tc:wsrp:v1:types">
      <registrationContext>
        <registrationHandle>0:0:0:0:0:0:0:1_1173173104036_0</registrationHandle>
      </registrationContext>
    </getServiceDescription>
  </soapenv:Body>
</soapenv:Envelope>

and here goes the answer which is quite verbose since it contains a complete description of the portlet/service. One annoyiance is all the unnessesary xsi:type the Axis 1.* produces which I've never been able to remove not even with sendXsiTypes.

HTTP/1.1 200 OK
Server: Apache-Coyote/1.1
Content-Type: text/xml;charset=utf-8
Date: Tue, 06 Mar 2007 09:25:03 GMT
Connection: close

<?xml version="1.0" encoding="utf-8"?>
<soapenv:Envelope
  xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/"
  xmlns:xsd="http://www.w3.org/2001/XMLSchema"
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
  <soapenv:Body>
    <getServiceDescriptionResponse
      xsi:type="ns1:ServiceDescription"
      xmlns="urn:oasis:names:tc:wsrp:v1:types"
      xmlns:ns1="urn:oasis:names:tc:wsrp:v1:types">
      <ns1:requiresRegistration xsi:type="xsd:boolean">true</ns1:requiresRegistration>
      <ns1:offeredPortlets xsi:type="ns1:PortletDescription">
        <ns1:portletHandle xsi:type="xsd:string">wsrp4j-testportlet.WSRP4JTestPortletA</ns1:portletHandle>
        <ns1:markupTypes xsi:type="ns1:MarkupType">
          <ns1:mimeType xsi:type="xsd:string">text/html</ns1:mimeType>
          <ns1:modes xsi:type="xsd:string">wsrp:view</ns1:modes>
          <ns1:modes xsi:type="xsd:string">wsrp:edit</ns1:modes>
          <ns1:modes xsi:type="xsd:string">wsrp:help</ns1:modes>
          <ns1:windowStates xsi:type="xsd:string">wsrp:normal</ns1:windowStates>
          <ns1:windowStates xsi:type="xsd:string">wsrp:minimized</ns1:windowStates>
          <ns1:windowStates xsi:type="xsd:string">wsrp:maximized</ns1:windowStates>
          <ns1:locales xsi:type="xsd:string">en</ns1:locales>
        </ns1:markupTypes>
        <ns1:groupID xsi:type="xsd:string">wsrp4j-testportlet</ns1:groupID>
        <ns1:description
          lang="en"
          xsi:type="ns1:LocalizedString">
          <ns1:value xsi:type="xsd:string">WSRP4J Test Portlet Description</ns1:value>
        </ns1:description>
        <ns1:shortTitle
          lang="en"
          xsi:type="ns1:LocalizedString">
          <ns1:value xsi:type="xsd:string">WSRP4J Test</ns1:value>
        </ns1:shortTitle>
        <ns1:title
          lang="en"
          xsi:type="ns1:LocalizedString">
          <ns1:value xsi:type="xsd:string">WSRP4J Test Portlet</ns1:value>
        </ns1:title>
        <ns1:keywords
          lang="en"
          xsi:type="ns1:LocalizedString">
          <ns1:value xsi:type="xsd:string">WSRP</ns1:value>
        </ns1:keywords>
        <ns1:keywords
          lang="en"
          xsi:type="ns1:LocalizedString">
          <ns1:value xsi:type="xsd:string">WSRP4J</ns1:value>
        </ns1:keywords>
        <ns1:keywords
          lang="en"
          xsi:type="ns1:LocalizedString">
          <ns1:value xsi:type="xsd:string">Test</ns1:value>
        </ns1:keywords>
        <ns1:usesMethodGet xsi:type="xsd:boolean">false</ns1:usesMethodGet>
        <ns1:userContextStoredInSession xsi:type="xsd:boolean">false</ns1:userContextStoredInSession>
        <ns1:templatesStoredInSession xsi:type="xsd:boolean">false</ns1:templatesStoredInSession>
        <ns1:hasUserSpecificState xsi:type="xsd:boolean">true</ns1:hasUserSpecificState>
        <ns1:doesUrlTemplateProcessing xsi:type="xsd:boolean">false</ns1:doesUrlTemplateProcessing>
      </ns1:offeredPortlets>
      <ns1:offeredPortlets xsi:type="ns1:PortletDescription">
        <ns1:portletHandle xsi:type="xsd:string">wsrp4j-testportlet.WSRP4JTestPortletB</ns1:portletHandle>
        <ns1:markupTypes xsi:type="ns1:MarkupType">
          <ns1:mimeType xsi:type="xsd:string">text/html</ns1:mimeType>
          <ns1:modes xsi:type="xsd:string">wsrp:view</ns1:modes>
          <ns1:modes xsi:type="xsd:string">wsrp:edit</ns1:modes>
          <ns1:modes xsi:type="xsd:string">wsrp:help</ns1:modes>
          <ns1:windowStates xsi:type="xsd:string">wsrp:normal</ns1:windowStates>
          <ns1:windowStates xsi:type="xsd:string">wsrp:minimized</ns1:windowStates>
          <ns1:windowStates xsi:type="xsd:string">wsrp:maximized</ns1:windowStates>
          <ns1:locales xsi:type="xsd:string">en</ns1:locales>
        </ns1:markupTypes>
        <ns1:groupID xsi:type="xsd:string">wsrp4j-testportlet</ns1:groupID>
        <ns1:description
          lang="en"
          xsi:type="ns1:LocalizedString">
          <ns1:value xsi:type="xsd:string">WSRP4J Test Portlet Description</ns1:value>
        </ns1:description>
        <ns1:shortTitle
          lang="en"
          xsi:type="ns1:LocalizedString">
          <ns1:value xsi:type="xsd:string">WSRP4J Test</ns1:value>
        </ns1:shortTitle>
        <ns1:title
          lang="en"
          xsi:type="ns1:LocalizedString">
          <ns1:value xsi:type="xsd:string">WSRP4J Test Portlet</ns1:value>
        </ns1:title>
        <ns1:keywords
          lang="en"
          xsi:type="ns1:LocalizedString">
          <ns1:value xsi:type="xsd:string">WSRP</ns1:value>
        </ns1:keywords>
        <ns1:keywords
          lang="en"
          xsi:type="ns1:LocalizedString">
          <ns1:value xsi:type="xsd:string">WSRP4J</ns1:value>
        </ns1:keywords>
        <ns1:keywords
          lang="en"
          xsi:type="ns1:LocalizedString">
          <ns1:value xsi:type="xsd:string">Test</ns1:value>
        </ns1:keywords>
        <ns1:usesMethodGet xsi:type="xsd:boolean">false</ns1:usesMethodGet>
        <ns1:userContextStoredInSession xsi:type="xsd:boolean">false</ns1:userContextStoredInSession>
        <ns1:templatesStoredInSession xsi:type="xsd:boolean">false</ns1:templatesStoredInSession>
        <ns1:hasUserSpecificState xsi:type="xsd:boolean">true</ns1:hasUserSpecificState>
        <ns1:doesUrlTemplateProcessing xsi:type="xsd:boolean">false</ns1:doesUrlTemplateProcessing>
      </ns1:offeredPortlets>
      <ns1:requiresInitCookie xsi:type="ns1:CookieProtocol">perGroup</ns1:requiresInitCookie>
    </getServiceDescriptionResponse>
  </soapenv:Body>
</soapenv:Envelope>

So there two portlets availeble and they are identified by:

• wsrp4j-testportlet.WSRP4JTestPortletA
• wsrp4j-testportlet.WSRP4JTestPortletB

and the are actually the same portlet, that is portlet code but exposed twice to show of som IPC (Inter Portlet Communication) within a portlet group (portletapplication).

Initializing cookie Next the cookie is initialized

POST /wsrp4j-producer/services/WSRPBaseService HTTP/1.0
Content-Type: text/xml; charset=utf-8
Accept: application/soap+xml, application/dime, multipart/related, text/*
User-Agent: Axis/1.4
Host: localhost:9101
Cache-Control: no-cache
Pragma: no-cache
SOAPAction: "urn:oasis:names:tc:wsrp:v1:initCookie"
Content-Length: 442

<?xml version="1.0" encoding="UTF-8"?>
<soapenv:Envelope
  xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/"
  xmlns:xsd="http://www.w3.org/2001/XMLSchema"
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
  <soapenv:Body>
    <initCookie xmlns="urn:oasis:names:tc:wsrp:v1:types">
      <registrationContext>
        <registrationHandle>0:0:0:0:0:0:0:1_1173173104036_0</registrationHandle>
      </registrationContext>
    </initCookie>
  </soapenv:Body>
</soapenv:Envelope>

The response body is basicly empty since the cookie comes as a normal HTTP header

HTTP/1.1 200 OK
Server: Apache-Coyote/1.1
Set-Cookie: JSESSIONID=CD75D795F9463373DD7A0919DF0680E0; Path=/
Content-Type: text/xml;charset=utf-8
Date: Tue, 06 Mar 2007 09:25:03 GMT
Connection: close

<?xml version="1.0" encoding="utf-8"?>
<soapenv:Envelope
  xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/"
  xmlns:xsd="http://www.w3.org/2001/XMLSchema"
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
  <soapenv:Body>
    <initCookieResponse xmlns="urn:oasis:names:tc:wsrp:v1:types" />
  </soapenv:Body>
</soapenv:Envelope>

I don't understand why it's done this way since it's all webservice and not (legacy) browsers, so all clients will be WSRP aware, but I guess the spec writers wanted to stick with known protocols where possible, so the session handling between the consumer and producer uses normal HTTP cookies. Now discovery and initialization is done and the markup can be exchanged.

Give the markup for the portlet

POST /wsrp4j-producer/services/WSRPBaseService HTTP/1.0
Content-Type: text/xml; charset=utf-8
Accept: application/soap+xml, application/dime, multipart/related, text/*
User-Agent: Axis/1.4
Host: localhost:9101
Cache-Control: no-cache
Pragma: no-cache
SOAPAction: "urn:oasis:names:tc:wsrp:v1:getMarkup"
Content-Length: 1483
Cookie: JSESSIONID=CD75D795F9463373DD7A0919DF0680E0

<?xml version="1.0" encoding="UTF-8"?>
<soapenv:Envelope
  xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/"
  xmlns:xsd="http://www.w3.org/2001/XMLSchema"
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
  <soapenv:Body>
    <getMarkup xmlns="urn:oasis:names:tc:wsrp:v1:types">
      <registrationContext>
        <registrationHandle>0:0:0:0:0:0:0:1_1173173104036_0</registrationHandle>
      </registrationContext>
      <portletContext>
        <portletHandle>wsrp4j-testportlet.WSRP4JTestPortletA</portletHandle>
      </portletContext>
      <runtimeContext>
        <userAuthentication>wsrp:none</userAuthentication>
        <portletInstanceKey>wsrp4j-proxyportlet_row2_col3_p3</portletInstanceKey>
        <namespacePrefix>Pluto_wsrp4j_proxyportlet_row2_col3_p3_</namespacePrefix>
      </runtimeContext>
      <userContext>
        <userContextKey>dummyUserContextKey</userContextKey>
      </userContext>
      <markupParams>
        <secureClientCommunication>false</secureClientCommunication>
        <locales>en</locales>
        <locales>de</locales>
        <mimeTypes>text/html</mimeTypes>
        <mode>wsrp:view</mode>
        <windowState>wsrp:normal</windowState>
        <clientData>
          <userAgent>WSRP4J Proxy Portlet</userAgent>
        </clientData>
        <markupCharacterSets>UTF-8</markupCharacterSets>
        <validNewModes>wsrp:view</validNewModes>
        <validNewModes>wsrp:help</validNewModes>
        <validNewModes>wsrp:edit</validNewModes>
        <validNewWindowStates>wsrp:normal</validNewWindowStates>
        <validNewWindowStates>wsrp:maximized</validNewWindowStates>
        <validNewWindowStates>wsrp:minimized</validNewWindowStates>
      </markupParams>
    </getMarkup>
  </soapenv:Body>
</soapenv:Envelope>

And here it comes (my not so pretty print)

HTTP/1.1 200 OK
Server: Apache-Coyote/1.1
Content-Type: text/xml;charset=utf-8
Date: Tue, 06 Mar 2007 09:25:03 GMT
Connection: close

<?xml version="1.0" encoding="utf-8"?>
<soapenv:Envelope
  xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/"
  xmlns:xsd="http://www.w3.org/2001/XMLSchema"
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
  <soapenv:Body>
    <getMarkupResponse xmlns="urn:oasis:names:tc:wsrp:v1:types">
      <markupContext>
        <mimeType>text/html; charset=UTF-8</mimeType>
        <markupString>
          &lt;h2&gt;URL Types Test&lt;/h2&gt;Time:Tue Mar 06 10:25:04 CET 2007&lt;BR/&gt;Current
          Mode:view&lt;BR/&gt;Current Window State:normal&lt;P/&gt;&lt;FONT
          SIZE=&quot;-1&quot;&gt;&lt;BR/&gt;&lt;B&gt;Render: &lt;/B&gt;Click here on &lt;A
          HREF=&quot;wsrp_rewrite?wsrp-urlType=render&amp;amp;wsrp-navigationalState=rO0ABXNyABFqYXZhLnV0aWwuSGFzaE1hcAUH2sHDFmDRAwACRgAKbG9hZEZhY3RvckkACXRocmVzaG9sZHhwP0AAAAAAAAx3CAAAABAAAAAAeA**&amp;amp;wsrp-secureURL=false/wsrp_rewrite&quot;&gt;Render&lt;/A&gt;
          URL.&lt;BR/&gt;&lt;BR/&gt;&lt;B&gt;Action: &lt;/B&gt;Click here on &lt;A
          HREF=&quot;wsrp_rewrite?wsrp-urlType=blockingAction&amp;amp;wsrp-interactionState=rO0ABXNyABFqYXZhLnV0aWwuSGFzaE1hcAUH2sHDFmDRAwACRgAKbG9hZEZhY3RvckkACXRocmVzaG9sZHhwP0AAAAAAAAx3CAAAABAAAAABdAAGQUNUSU9OdXIAE1tMamF2YS5sYW5nLlN0cmluZzut0lbn6R17RwIAAHhwAAAAAXQAATF4&amp;amp;wsrp-secureURL=false/wsrp_rewrite&quot;&gt;Action&lt;/A&gt;
          URL.&lt;BR/&gt;&lt;I&gt;Group Scope :0&lt;/I&gt;&lt;BR/&gt;&lt;I&gt;Portlet Scope
          :0&lt;/I&gt;&lt;BR/&gt;&lt;BR/&gt;&lt;B&gt;Resource: &lt;/B&gt;&lt;BR/&gt;&lt;IMG
          SRC=&quot;wsrp_rewrite?wsrp-urlType=resource&amp;amp;wsrp-url=http%3A%2F%2Flocalhost%3A9101%2Fwsrp4j-testportlet%2Fimages%2Fproject-logo.jpg&amp;amp;wsrp-requiresRewrite=false&amp;amp;wsrp-secureURL=false/wsrp_rewrite&quot;
          align=&quot;TOP&quot;/&gt;&lt;BR/&gt;&lt;BR/&gt;&lt;B&gt;Namespace:
          &lt;/B&gt;Pluto_wsrp4j_proxyportlet_row2_col3_p3_someFunctionHere()&lt;BR/&gt;&lt;HR/&gt;&lt;B&gt;Navigation&lt;/B&gt;&lt;BR/&gt;Page
          1&lt;BR/&gt;&lt;A
          HREF=&quot;wsrp_rewrite?wsrp-urlType=render&amp;amp;wsrp-navigationalState=rO0ABXNyABFqYXZhLnV0aWwuSGFzaE1hcAUH2sHDFmDRAwACRgAKbG9hZEZhY3RvckkACXRocmVzaG9sZHhwP0AAAAAAAAx3CAAAABAAAAABdAAHanNwTmFtZXVyABNbTGphdmEubGFuZy5TdHJpbmc7rdJW5-kde0cCAAB4cAAAAAF0AAl0ZXN0Mi5qc3B4&amp;amp;wsrp-secureURL=false/wsrp_rewrite&quot;&gt;Next
          &amp;gt;&amp;gt;&lt;/A&gt;&lt;/FONT&gt;
        </markupString>
        <locale>en</locale>
        <requiresUrlRewriting>true</requiresUrlRewriting>
      </markupContext>
    </getMarkupResponse>
  </soapenv:Body>
</soapenv:Envelope>

and the same for the other portlet (ending with B).

please send the image

The portlet has an image resource that's fetched and cached for the second portlet. The request is a simple HTTP GET request (without a body)

GET /wsrp4j-testportlet/images/project-logo.jpg HTTP/1.1
User-Agent: Java/1.5.0_10
Host: localhost:9101
Accept: text/html, image/gif, image/jpeg, *; q=.2, */*; q=.2
Connection: keep-alive

and the answer is the jpeg image in binary so I'll not show that:

HTTP/1.1 200 OK
Server: Apache-Coyote/1.1
ETag: W/"12241-1171550282000"
Last-Modified: Thu, 15 Feb 2007 14:38:02 GMT
Content-Type: image/jpeg
Content-Length: 12241
Date: Tue, 06 Mar 2007 09:25:04 GMT

and that completes the portlet page that the user sees.

Pluto 1.0.1 and web-app 2.4

I wanted to get started on using WSRP by the WSRP4J project at apache , and has ended up in non-productive try and fails and google searches. Long story short, to get started WSRP4J doesn't have a binary to start with and therefore i had to use it from the svn repo, to find out that it uses Maven, which i havn't used before. I did get it running after some time, and then i wanted to tryit on my own portlets. I've tried the 1.1 beta branch of Pluto, but WSRP4J still uses Pluto 1.0.1, and for days i've been hassling to get i running. Logging/debugging in Tomcat 5.5/6.0 still puzzles me (worth and entry of it's own) but the last piece that i've got working was after endless log entries like

Feb 25, 2007 12:34:26 PM org.apache.pluto.portalImpl.services.log.LoggerImpl error
SEVERE: Error in Portlet
java.lang.NullPointerException
   at org.apache.pluto.invoker.impl.PortletInvokerImpl.invoke(PortletInvokerImpl.java:109)
   at org.apache.pluto.invoker.impl.PortletInvokerImpl.load(PortletInvokerImpl.java:80)
   at org.apache.pluto.PortletContainerImpl.portletLoad(PortletContainerImpl.java:218)
   at org.apache.pluto.portalImpl.core.PortletContainerWrapperImpl.portletLoad(PortletContainerWrapperImpl.java:94)
   at org.apache.pluto.portalImpl.aggregation.PortletFragment.service(PortletFragment.java:120)
   at org.apache.jsp.WEB_002dINF.aggregation.ColumnFragment_jsp._jspService(ColumnFragment_jsp.java:76)
   at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:98)
   at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
   at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:384)
   at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:320)
   at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266)
   at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
   at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
   at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
   at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:687)
   at org.apache.catalina.core.ApplicationDispatcher.doInclude(ApplicationDispatcher.java:590)
   at org.apache.catalina.core.ApplicationDispatcher.include(ApplicationDispatcher.java:505)
   at org.apache.pluto.portalImpl.aggregation.AbstractFragment.service(AbstractFragment.java:112)
   at org.apache.jsp.WEB_002dINF.aggregation.RowFragment_jsp._jspService(RowFragment_jsp.java:76)
   at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:98)
   at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
   at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:384)
   at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:320)
   at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266)
   at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
   at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
   at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
   at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:687)
   at org.apache.catalina.core.ApplicationDispatcher.doInclude(ApplicationDispatcher.java:590)
   at org.apache.catalina.core.ApplicationDispatcher.include(ApplicationDispatcher.java:505)
   at org.apache.pluto.portalImpl.aggregation.AbstractFragment.service(AbstractFragment.java:112)
   at org.apache.jsp.WEB_002dINF.aggregation.PageFragment_jsp._jspService(PageFragment_jsp.java:85)
   at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:98)
   at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
   at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:384)
   at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:320)
   at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266)
   at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
   at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
   at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
   at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:687)
   at org.apache.catalina.core.ApplicationDispatcher.doInclude(ApplicationDispatcher.java:590)
   at org.apache.catalina.core.ApplicationDispatcher.include(ApplicationDispatcher.java:505)
   at org.apache.pluto.portalImpl.aggregation.AbstractFragment.service(AbstractFragment.java:112)
   at org.apache.jsp.WEB_002dINF.aggregation.RootFragment_jsp._jspService(RootFragment_jsp.java:147)
   at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:98)
   at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
   at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:384)
   at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:320)
   at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266)
   at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
   at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
   at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
   at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:687)
   at org.apache.catalina.core.ApplicationDispatcher.doInclude(ApplicationDispatcher.java:590)
   at org.apache.catalina.core.ApplicationDispatcher.include(ApplicationDispatcher.java:505)
   at org.apache.pluto.portalImpl.aggregation.AbstractFragment.service(AbstractFragment.java:112)
   at org.apache.pluto.portalImpl.Servlet.doGet(Servlet.java:254)
   at javax.servlet.http.HttpServlet.service(HttpServlet.java:690)
   at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
   at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
   at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
   at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:228)
   at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
   at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:433)
   at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
   at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:104)
   at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
   at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:212)
   at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
   at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:634)
   at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:445)
   at java.lang.Thread.run(Thread.java:595)

I had an idea that web-app versions might be a problem, and had it running when i changed to version 2.3, I then changed it to 2.4 and redeployed and i still worked, but that was probably due to me lack of understanding on redeploying to tomcat. Any how it's also described in the mail archives (this from the google cache) Re: Supporting web.xml with 2.4 XSD The solution was to only put the version="2.4" attribute on the <web-app> tag and not the namespace information. Now I'll have to make sure everything else works without the namespace attributes. That's right for me as well. Now I'm not sure wether it'll actually run as a 2.4 web-app in tomcat, but time will show.