Error in proxy configuration for a WebService

Question

This is my first attempt at working with a WebService in Flash.
The services, which are on a local machine work fine when I call them directly, i.e. with useProxy="false".
However, when I attempt to call them through BlazeDS, setting useProxy="true", I get the following error as soon as the app loads. Seems I have not set up channels correctly, but I cannot figure out what I am doing wrong. The proxy-config file is at the end of this message.
[RPC Fault faultString="[MessagingError message='Destination 'groupWS' either does not exist or the destination has no channels defined (and the application does not define any default channels.)']" faultCode="InvokeFailed" faultDetail="Unable to load WSDL. If currently online, please verify the URI and/or format of the WSDL (http://localhost:8080/idm-ws/idmsrvc/GroupDataWebService?wsdl)"]
    at mx.rpc.wsdl::WSDLLoader/faultHandler()[E:\dev\4.0.0\frameworks\projects\rpc\src\mx\rpc\ws dl\WSDLLoader.as:103]
    at flash.events::EventDispatcher/dispatchEventFunction()
    at flash.events::EventDispatcher/dispatchEvent()
    at HTTPOperation/http://www.adobe.com/2006/flex/mx/internal::dispatchRpcEvent()[E:\dev\4.0.0\frameworks\pro jects\rpc\src\mx\rpc\http\HTTPService.as:989]
    at Function/http://adobe.com/AS3/2006/builtin::apply()
    at mx.rpc::AsyncDispatcher/timerEventHandler()[E:\dev\4.0.0\frameworks\projects\rpc\src\mx\r pc\AsyncDispatcher.as:50]
    at flash.utils::Timer/_timerDispatch()
    at flash.utils::Timer/tick()
MXML
        <s:WebService id="groupRO"
                      wsdl="http://localhost:8080/idm-ws/idmsrvc/GroupDataWebService?wsdl"
                      useProxy="true"
                      destination="groupWS"
                      result="serviceResult(event);"
                      showBusyCursor="true"/>
proxy-config.xml
<?xml version="1.0" encoding="UTF-8"?>
<service id="proxy-service"
    class="flex.messaging.services.HTTPProxyService">
    <properties>
        <connection-manager>
            <max-total-connections>100</max-total-connections>
            <default-max-connections-per-host>2</default-max-connections-per-host>
        </connection-manager>
        <allow-lax-ssl>true</allow-lax-ssl>
    </properties>
    <adapters>
        <adapter-definition id="http-proxy" class="flex.messaging.services.http.HTTPProxyAdapter" default="true"/>
        <adapter-definition id="soap-proxy" class="flex.messaging.services.http.SOAPProxyAdapter"/>
    </adapters>
    <default-channels>
        <channel ref="my-amf"/>
    </default-channels>
    <destination id="DefaultHTTP">
    </destination>
    <destination id="groupWS">
        <properties>
            <wsdl>http://localhost:8080/idm-ws/idmsrvc/GroupDataWebService?wsdl</wsdl>
            <soap>http://localhost:8080/idm-ws/idmsrvc/*</soap>
        </properties>
        <adapter ref="soap-proxy"/>
    </destination>
</service>
Any help will me much appreciated.
Thanks.
cortlander

Answer 1

Here is my proxy-config.xml which defines default channels:
<?xml version="1.0" encoding="UTF-8"?>
<service id="proxy-service" class="flex.messaging.services.HTTPProxyService">
    <properties>
        <connection-manager>
            <max-total-connections>100</max-total-connections>
            <default-max-connections-per-host>2</default-max-connections-per-host>
        </connection-manager>
        <allow-lax-ssl>true</allow-lax-ssl>
    </properties>
    <default-channels>
        <channel ref="my-http"/>
        <channel ref="my-amf"/>
    </default-channels>
    <adapters>
        <adapter-definition id="http-proxy" class="flex.messaging.services.http.HTTPProxyAdapter" default="true"/>
        <adapter-definition id="soap-proxy" class="flex.messaging.services.http.SOAPProxyAdapter"/>
    </adapters>
    <destination id="DefaultHTTP">
                    <properties>
                    </properties>
    </destination>
    <destination id="catalog">
                    <properties>
                              <url>/{context.root}/testdrive-httpservice/catalog.jsp</url>
                    </properties>
    </destination>
    <destination id="ws-catalog">
        <properties>
            <wsdl>http://feeds.adobe.com/webservices/mxna2.cfc?wsdl</wsdl>
            <soap>*</soap>
        </properties>
        <adapter ref="soap-proxy"/>
    </destination>
</service>
And (partial/related)services-config.xml:
<services-config>
    <services>
        <service class="flex.samples.DatabaseCheckService" id="hsqldb" />
        <service-include file-path="remoting-config.xml" />
        <service-include file-path="proxy-config.xml" />
        <service-include file-path="messaging-config.xml" />
              <service class="flex.samples.runtimeconfig.EmployeeRuntimeRemotingDestination" id="runtime-employee-ro" />
        <default-channels>
           <channel ref="my-amf"/>
        </default-channels>
          </services>
    <channels>
        <channel-definition id="my-streaming-amf" class="mx.messaging.channels.StreamingAMFChannel">
            <endpoint url="http://{server.name}:{server.port}/{context.root}/messagebroker/streamingamf" class="flex.messaging.endpoints.StreamingAMFEndpoint"/>
        </channel-definition>
        <channel-definition id="my-amf" class="mx.messaging.channels.AMFChannel">
            <endpoint url="http://{server.name}:{server.port}/{context.root}/messagebroker/amf" class="flex.messaging.endpoints.AMFEndpoint"/>
            <properties>
                <polling-enabled>false</polling-enabled>
            </properties>
        </channel-definition>
    </channels>
</services-config>
Any help would be greatly appreciated.