Client & stub

hi...friends
i'm a new learner to rmi concepts. can anybody help me in knowing the client & stub concepts in rmi.

stub is a client side proxy for a remote object ( instance of a class that implements a remote interface ) which is responsible for communicating method invocations on remote objects to the server where the actual remote object implementation resides and are generated with the command -rmic class_name. Client gets reference to the remote object with the help of stub.
More information can be obtained from either Java Tutorial or the Java Documentation.

Similar Messages

Wscompile does not seem to be generating a client stub

When I run the wscompile tool on a WSDL file generated using gSoap the wscompile tool does not generate the client stub. Instead it reports the following errors:
warning: ignoring port "finsvc": no SOAP address specified
warning: Service "finsvc" does not contain any usable ports
The WSDL file and the config file is shown below (please note that the IP address has been changed to 255.255.255.255 in this example but when we ran wscompile it was a valid one):
<?xml version="1.0" encoding="UTF-8"?>
<definitions name="finsvc"
targetNamespace="http://www.xxxxxxxx.com/abcd/finsvc"
xmlns:tns="http://www.xxxxxxxx.com/abcd/finsvc"
xmlns:SOAP-ENV="http://www.w3.org/2003/05/soap-envelope"
xmlns:SOAP-ENC="http://www.w3.org/2003/05/soap-encoding"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:xsd="http://www.w3.org/2001/XMLSchema"
xmlns:nsfinsvc="http://www.xxxxxxxx.com/abcd/finsvc"
xmlns:SOAP="http://schemas.xmlsoap.org/wsdl/soap12/"
xmlns:MIME="http://schemas.xmlsoap.org/wsdl/mime/"
xmlns:DIME="http://schemas.xmlsoap.org/ws/2002/04/dime/wsdl/"
xmlns:WSDL="http://schemas.xmlsoap.org/wsdl/"
xmlns="http://schemas.xmlsoap.org/wsdl/">
<types>
<schema targetNamespace="http://www.xxxxxxxx.com/abcd/finsvc"
xmlns:SOAP-ENV="http://www.w3.org/2003/05/soap-envelope"
xmlns:SOAP-ENC="http://www.w3.org/2003/05/soap-encoding"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:xsd="http://www.w3.org/2001/XMLSchema"
xmlns:nsfinsvc="http://www.xxxxxxxx.com/abcd/finsvc"
xmlns="http://www.w3.org/2001/XMLSchema"
elementFormDefault="unqualified"
attributeFormDefault="unqualified">
<import namespace="http://www.w3.org/2003/05/soap-encoding"/>
<complexType name="getFinStatusRequest">
<sequence>
<element name="lswebcmn-dept" type="xsd:string" minOccurs="0" maxOccurs="1" nillable="true"/>
<element name="lswebcmn-opr" type="xsd:string" minOccurs="0" maxOccurs="1" nillable="true"/>
<element name="lswebcmn-pwd" type="xsd:string" minOccurs="0" maxOccurs="1" nillable="true"/>
<element name="lswebcmn-func" type="xsd:string" minOccurs="0" maxOccurs="1" nillable="true"/>
<element name="lswebcmn-action" type="xsd:string" minOccurs="0" maxOccurs="1" nillable="true"/>
<element name="lswebcmn-option" type="xsd:string" minOccurs="0" maxOccurs="1" nillable="true"/>
<element name="lswebcmn-sessid" type="xsd:int" minOccurs="1" maxOccurs="1"/>
<element name="ltnum" type="xsd:int" minOccurs="1" maxOccurs="1"/>
</sequence>
</complexType>
<complexType name="getFinStatusRspLtdet">
<sequence>
<element name="ltnum" type="xsd:int" minOccurs="1" maxOccurs="1"/>
<element name="ltnum1" type="xsd:int" minOccurs="1" maxOccurs="1"/>
<element name="ltnum2" type="xsd:int" minOccurs="1" maxOccurs="1"/>
<element name="ltname" type="xsd:string" minOccurs="0" maxOccurs="1" nillable="true"/>
</sequence>
</complexType>
<complexType name="ArrayOfgetFinStatusRspLtdet">
<complexContent>
<restriction base="SOAP-ENC:Array">
<sequence>
<element name="item" type="nsfinsvc:getFinStatusRspLtdet" minOccurs="0" maxOccurs="unbounded"/>
</sequence>
<attribute ref="SOAP-ENC:arrayType" WSDL:arrayType="nsfinsvc:getFinStatusRspLtdet[]"/>
</restriction>
</complexContent>
</complexType>
</schema>
</types>
<message name="getFinStatus">
<part name="p-in" type="nsfinsvc:getFinStatusRequest"/>
</message>
<message name="getFinStatusRsp">
<part name="lswebcmn-status" type="xsd:int"/>
<part name="lswebcmn-statusmsg" type="xsd:string"/>
<part name="ptrLtdet" type="nsfinsvc:ArrayOfgetFinStatusRspLtdet"/>
</message>
<portType name="finsvcPortType">
<operation name="getFinStatus">
<documentation>Service definition of function nsfinsvc__getFinStatus</documentation>
<input message="tns:getFinStatus"/>
<output message="tns:getFinStatusRsp"/>
</operation>
</portType>
<binding name="finsvc" type="tns:finsvcPortType">
<SOAP:binding style="rpc" transport="http://schemas.xmlsoap.org/soap/http"/>
<operation name="getFinStatus">
<SOAP:operation style="rpc"/>
<input>
<SOAP:body use="encoded" namespace="http://www.xxxxxxxx.com/abcd/finsvc" encodingStyle="http://www.w3.org/2003/05/soap-encoding"/>
</input>
<output>
<SOAP:body use="encoded" namespace="http://www.xxxxxxxx.com/abcd/finsvc" encodingStyle="http://www.w3.org/2003/05/soap-encoding"/>
</output>
</operation>
</binding>
<service name="finsvc">
<documentation>gSOAP 2.7.6d generated service definition</documentation>
<port name="finsvc" binding="tns:finsvc">
<SOAP:address location="http://255.255.255.255:18083"/>
</port>
</service>
</definitions>
And the config file used with the wscompile is as below:
<configuration xmlns="http://java.sun.com/xml/ns/jax-rpc/ri/config">
<wsdl location="./FINSVC.wsdl"
packageName="com"/>
</configuration>

Thanks for the reply...
C:\JavaProgFiles\jwsdp-2.0\jaxrpc\bin>wscompile -version
JAX-RPC Standard Implementation (1.1.3, build R1)
C:\JavaProgFiles\jwsdp-2.0\jaxrpc\bin>wscompile -verbose config.xml
error: no mode was specified, please use one of -import/-define/-gen
Usage: wscompile [options] configuration_file
Use "wscompile -help" for a detailed description of options.
C:\JavaProgFiles\jwsdp-2.0\jaxrpc\bin>wscompile -verbose -gen config.xml
warning: ignoring port "finsvc": no SOAP address specified
warning: Service "finsvc" does not contain any usable ports
[ServiceInterfaceGenerator: creating service interface: com.Finsvc]
[ServiceGenerator: creating service: com.Finsvc_Impl]
[SerializerRegistryGenerator: creating serializer registry: com.Finsvc_SerializerRegistry]
Since then we discovered the following:
When I change the following line in the WSDL it works:
From:
xmlns:SOAP="http://schemas.xmlsoap.org/wsdl/soap12/"
To:
xmlns:SOAP="http://schemas.xmlsoap.org/wsdl/soap/"
It looks like wscompile (v1.1.3) works with Soap 1.1 WSDL only.
When using wsimport instead all seems to work fine provided we change from rpc/encoded to document/literal.
I guess that's the way to go...for Soap 1.2

How to create client stub while deployign EAR on Oracle Application Server

Hi,
I have deployed an EJB on Oracle Application Server 10g 10.1.2.0.2. And i want to call this ejb from other app server using ejb client. For that i need client stub.
Is there any way I can create client stub while deploying EJB on the OC4J?
I am sure there will be some options.
Thanks and Regards
AT

Amit,
It depends on which transport protocol you use to transmit both the client requests and the server responses: either IIOP or ORMI.
Here's how it works: if you've chosen the IIOP protocol, the client stubs are generated at deploy time and stored in the iiopClient.jar file. Once created, you append this file to your java client's classpath.
Now, if your choice is ORMI, the client stubs are created on demand by the container, so there is no need to append any jar file to the client classpath.
Consult the OC4J Services Guide in the Official Oracle Application Server docs for further inforrmation on this topic, specially the "Remote Method Invocation" chapter.
RB

Web service client stub had exception

Hi there,
I'm new to Oracle AS(10.1.2). I used JDeveloper 10.1.3 created web service, and client stub. When I called the web service from client stub, I got the following error:
[SOAPException: faultCode=SOAP-ENV:Server; msg=java.math.BigDecimal.<init>(I)V [java.lang.NoSuchMethodError]]
I didn't find any problem with my parameters passing from client to the WS.
Anybody can help?
Thanks,
Helen

Hi there,
I'm new to Oracle AS(10.1.2). I used JDeveloper 10.1.3 created web service, and client stub. When I called the web service from client stub, I got the following error:
[SOAPException: faultCode=SOAP-ENV:Server; msg=java.math.BigDecimal.<init>(I)V [java.lang.NoSuchMethodError]]
I didn't find any problem with my parameters passing from client to the WS.
Anybody can help?
Thanks,
Helen

WSDL/client-stub generation without EJBs ?

My WL7 application invokes methods on external subscriber
web-apps. I need to provide WSDLs for these external apps, since
they'll be implemented by our customers.
Currently, I create 'dummy' EJBs, then create .ears out of it,
run 'servicegen' to create a dummy webservice, then run
'clientgen' to create the WSDLs and the client stub classes
that I'll finally use. I'd like to avoid some of the above
steps. Ideally, I'd just create the appropriate Java interface
classes, then use some tool to create the WSDL and the
client-stub classes. Is this possible ?
-john

Hi John,
Have you considered using a WSDL generation GUI, such as
http://www.omniopera.com/omniopera.html
Bruce
BTW, you do realize that when a webservice is deployed on WLS v7, the
WSDL is available to anyone using
http://<host>:<port>/<context_url>/<webservice>?WSDL
john wrote:
Bruce, I'm not sure how I would use those other tasks to obtain
what I want. AFAIK, the only way to generate a WSDL for a service
is to use the 'clientgen' task. And the clientgen task requires
the actual webservice implementation in the form of a .ear
file.
In my case, I need to create WSDLs which I then pass on to
my customers, for them to implement and host. Currently, to do
this I have to myself implement the desired dummy webservice
and then use clientgen to obtain the WSDL (along with the
stubs etc ..)
thanx
-john
Bruce Stephens <[email protected]> wrote:
Hi John,
In addition to the servicegen and clientgen ant tasks there are now
several other narrowly focused ant tasks such as autotype, and
source2wsdd. Check out the documentation:
http://edocs.bea.com/wls/docs70/webserv/assemble.html#1011066
Hope this helps,
Bruce
john wrote:
My WL7 application invokes methods on external subscriber
web-apps. I need to provide WSDLs for these external apps, since
they'll be implemented by our customers.
Currently, I create 'dummy' EJBs, then create .ears out of it,
run 'servicegen' to create a dummy webservice, then run
'clientgen' to create the WSDLs and the client stub classes
that I'll finally use. I'd like to avoid some of the above
steps. Ideally, I'd just create the appropriate Java interface
classes, then use some tool to create the WSDL and the
client-stub classes. Is this possible ?
-john

Generatin client stubs from wsdl file

i user wsimport to generate the client stubs
look like i am missing some files
like the service port/stub..
please help

i user wsimport to generate the client stubs
look like i am missing some files
like the service port/stub..wsimport is run on a WSDL and it generates all required stubs for you. What is the exact nature of your problem ? more details please

How the client stub is generated from the wsdl file ?

I want to know how the client stub is generated from the wsdl file ?
how the client accesses the methods in the wsdl fie ?
thanks alot .

there are several ways to generate the stubs from a wsdl.
if you're using jax-ws, there is a netbeans tutorial creating web services. you found this on http://www.netbeans.org/kb/trails/web.html.
if you're using axis as your framework, i think this would be a nice introduction of it. link : http://www.eli.sdsu.edu/courses/spring03/cs683/notes/AXIS/AXIS.html#Heading4

Where are the client stubs generated

I am using weblogic 8, so i understand that the client stub is generated by the container when the my ejbs are deployed.
But where is this jar file created.
Is there a tool which i can use to generate the .jar file once my ejb is delployed.
Thank you
Rahul

(Found something on this for weblogic 6 ..maybe this holds true for weblogic 8) ..still cant figure out exactly where it creates the stub.. might have to try it out and search BEA_HOME
WebLogic Server supports the use of ejb-client.jar files.
The ejb-client.jar contains the home and remote interfaces, the primary key class (as applicable), and the files they reference. WebLogic Server does not add files referenced in your classpath to ejb-client.jar. This enables WebLogic Server to add necessary custom classes to the ejb-client.jar without adding generic classes such as java.lang.String.
For example, the ShoppingCart remote interface might have a method that returns an Item class. Because this remote interface references this class, and it is located in the ejb-jar file, it will be included in the client jar.
You configure the creation of an ejb-client.jar file in the bean's ejb-jar.xml deployment descriptor file.When you compile the bean with ejbc, WebLogic Server creates the ejb-client.jar.
To specify an ejb-client.jar:
1. Compile the bean's Java classes into a directory, using the javac compiler from the command line.
2. Add the EJB XML deployment descriptor files to the compiled unit using the guidelines in WebLogic Server EJB Deployment Files.
3. Edit the ejb-client-jar deployment descriptor in the bean's ejb-jar.xml file, as follows, to specify support for ejb-client.jar:
<ejb-client-jar>ShoppingCartClient.jar</ejb-client-jar>
4. Generate the container classes that are used to access the bean using weblogic.ejbc and create the ejb-client.jar using the following command:
$ java weblogic.ejbc <ShoppingCart.jar>
Container classes include both the internal representation of the EJB that WebLogic Server uses, as well as implementation of the external interfaces (home, local, and/or remote) that clients use.
External clients can include the ejb-client.jar in their classpath. Web applications would include the ejb-client.jar in their /lib directory.
Note: WebLogic Server classloading behavior varies, depending on whether or not the client is stand-alone. Stand-alone clients with access to the ejb-client.jar can load the necessary classes over the network. However, for security reasons, programmatic clients running in a server instance cannot load classes over the network.

NoInitialContextException error in Client stub tester

I keep on getting the following exception.
javax.naming.NoInitialContextException: Need to specify class name in environment or system property, or as an applet parameter, or in an application resource file: java.naming.factory.initial
at javax.naming.spi.NamingManager.getInitialContext(NamingManager.java:645)
at javax.naming.InitialContext.getDefaultInitCtx(InitialContext.java:247)
at javax.naming.InitialContext.getURLOrDefaultInitCtx(InitialContext.java:284)
at javax.naming.InitialContext.lookup(InitialContext.java:351)
at TestClient.main(TestClient.java:9)
My bean is in the testing package. It compiles quite alright, but won't execute when I try the lookup. It fails on lookup, What more do I need 2 be doing. I can access the bean using a JSP page but not via client stub code????
import testing.*;
import javax.naming.InitialContext;
public class TestClient
public static void main(String [] args){
     try {
     InitialContext ic = new InitialContext();
     Object o = ic.lookup ("ejb/TestingBean");
     } catch (Exception e) {
     System.err.println ("Some weird asss exception occurred");
     e.printStackTrace();
}

The best option is to write a portable Java EE Application Client component and let the Application Client container bootstrap the naming service so your code doesn't have to. If you prefer to write a non-portable stand-alone java client, we have instructions for how to do that here :
https://glassfish.dev.java.net/javaee5/ejb/EJB_FAQ.html
--ken

Generating client stubs...

Hi all,
I want to ask a question about my j2me web service project.
Wireless Toolkit 2.5,
Tomcat 5.0 for Java WSDP,
Java Web Services Developer Pack 1.5,
jdk1.5.0_06 are installed and environment variables are adjusted...
When i want to generate client stubs after i deploy the project via ant, i get this error:
error : com.sun.tools.javac.Main is not available in the classpath..
error: compilation failed, errors should have been reported
How to solve this problem, please help...

I found more notes on what I had to do:
- the process above created package names like java.oracle_e1_bssv_jp010000
- we need to rename these to be proper package names.
- refresh the eclipse project so you see these folders
- select the package, right click, refactor, rename
- rename these to be like oracle.e1.bssv.jp010000 (remove the java. and replace _ with .)
- there will probably be a bunch of errors in individual java files you will need to fix.
- they are very easy, it should be a matter of just deleting the imports, these are not needed because they are in the same package.

OC4J 9.0.4, JAX-RPC, AXIS Client Stub

Hi All,
I have hit a problem and am wondering if anybody has any pointers :
* I have a Webservice running on OC4J 10.1.2 Standalone.
* I have generated Java client stubs by pointing to this webservice using the wsdl2java tool from Apache Axis and can use these generated classes without any problems outside any web containers.
* I have created a jsp that calls these classes and can run this within the embedded server of Jdeveloper 9.0.5.2
However...
When I deploy the ear file containing this jsp into a 9.0.4 OC4J standalone / or full install and run the same jsp I am getting the following exception :
500 Internal Server Error
java.lang.ClassFormatError: com/abc/mypackage/MyApplicationBindingStub (Illegal Field name "array$[B")
     at java.lang.ClassLoader.defineClass0(Native Method)
     at java.lang.ClassLoader.defineClass(ClassLoader.java:502)
     at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:123)
     at com.evermind[com Application Server Containers for J2EE 10g (9.0.4.0.0)].util.OC4JSecureClassLoader.defineClassEntry(OC4JSecureClassLoader.java:172)
     at com.evermind[com Application Server Containers for J2EE 10g (9.0.4.0.0)].naming.ContextClassLoader.defineClass(ContextClassLoader.java:1154)
     at com.evermind[com Application Server Containers for J2EE 10g (9.0.4.0.0)].naming.ContextClassLoader.findClass(ContextClassLoader.java:390)
     at java.lang.ClassLoader.loadClass(ClassLoader.java:299)
     at com.evermind[com Application Server Containers for J2EE 10g (9.0.4.0.0)].naming.ContextClassLoader.loadClass(ContextClassLoader.java:138)
     at java.lang.ClassLoader.loadClass(ClassLoader.java:255)
     at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:315)
     at com.abc.mypackage.MyApplication_ServiceLocator.getMyApplicationPort(MyApplication_ServiceLocator.java:55)
     at com.abc.mypackage.MyApplication_ServiceLocator.getMyApplicationPort(MyApplication_ServiceLocator.java:50)
     at _Headers._jspService(_Headers.java:81)
     [SRC:/Headers.jsp:40]
     at com.orionserver[com Application Server Containers for J2EE 10g (9.0.4.0.0)].http.OrionHttpJspPage.service(OrionHttpJspPage.java:56)
     at com.jsp.runtimev2.JspPageTable.service(JspPageTable.java:349)
     at com.jsp.runtimev2.JspServlet.internalService(JspServlet.java:509)
     at com.jsp.runtimev2.JspServlet.service(JspServlet.java:413)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
     at com.evermind[com Application Server Containers for J2EE 10g (9.0.4.0.0)].server.http.ServletRequestDispatcher.invoke(ServletRequestDispatcher.java:765)
     at com.evermind[com Application Server Containers for J2EE 10g (9.0.4.0.0)].server.http.ServletRequestDispatcher.forwardInternal(ServletRequestDispatcher.java:317)
     at com.evermind[com Application Server Containers for J2EE 10g (9.0.4.0.0)].server.http.HttpRequestHandler.processRequest(HttpRequestHandler.java:790)
     at com.evermind[com Application Server Containers for J2EE 10g (9.0.4.0.0)].server.http.HttpRequestHandler.run(HttpRequestHandler.java:270)
     at com.evermind[com Application Server Containers for J2EE 10g (9.0.4.0.0)].server.http.HttpRequestHandler.run(HttpRequestHandler.java:112)
     at com.evermind[com Application Server Containers for J2EE 10g (9.0.4.0.0)].util.ReleasableResourcePooledExecutor$MyWorker.run(ReleasableResourcePooledExecutor.java:186)
     at java.lang.Thread.run(Thread.java:536)
Can anybody let me know what I need to do. Is there anyway that I can get this Apache client code (which uses jax-rpc) working within OC4J 9.0.4. I know the limitations of 9.0.4 and Jax-rpc - but I am wondering if anybody has a nice note to work around it.
Any help or comments would be greatly appreciated.

Richard, the error message you see below indicates that the JVM can not recognize your class file.
java.lang.ClassFormatError: com/abc/mypackage/MyApplicationBindingStub (Illegal Field name "array$[B")
Are you using different java version to run wsdljava and OC4J? Can you try using the same version of java for both of them?

Client stub code

Hi,
Is there any way to tell clientgen to generate the client stub code (java files
not just class files)?
I am trying the web service tutorial examples and I want to look the stub code
so that I know exactly what methods and signature to use for my client program.
thanks
Johnny

Set the following attribute in clientgen ant task:
keepGenerated="true"
Regards,
-manoj
http://manojc.com
"johnny" <[email protected]> wrote in message news:40c87e12$1@mktnews1...
>
Hi,
Is there any way to tell clientgen to generate the client stub code (javafiles
not just class files)?
I am trying the web service tutorial examples and I want to look the stubcode
so that I know exactly what methods and signature to use for my clientprogram.
>
>
thanks
Johnny

C++ Client stub generation plans?

I have a feeling I have asked this question before:
Are there any plans afoot to release a C++ client stub generator for WSDL? Having
spent the last week getting one to work with WSDL, I can tell you there is a market
there - most of the currently available ones are a bit ugly.
I imagine that since you have the WSDL parsing engine already there, it would be
a simple matter of plugging in a different emitter that would turn out C++ instead
of Java.
Regards,
Nick

In particular, there is a lack of pre-.net C++ soap implementations.
The MS SOAP is poor (its heavy on COM). The RogueWave one is in alpha status. The
WASP stuff is rather ugly - lots of macros and little use of standard C++....
Its a Pity. If Weblogic is positioned as an integration platform, it needs to start
to consider non-java languages. C++ is one particular legacy language that is important
to support.. I think.
-Nick
"manoj cheenath" <[email protected]> wrote:
WLS 7.0 can not generate C++ stubs. I dont think this is a planned feature
for the next release. There are many C++ impls (.net, ms soap toolkit,
roguewave, ...)
regards,
-manoj
"Nick Minutello" <[email protected]> wrote
in message news:[email protected]..
I have a feeling I have asked this question before:
Are there any plans afoot to release a C++ client stub generator for WSDL?Having
spent the last week getting one to work with WSDL, I can tell you thereis
a market
there - most of the currently available ones are a bit ugly.
I imagine that since you have the WSDL parsing engine already there, itwould be
a simple matter of plugging in a different emitter that would turn outC++
instead
of Java.
Regards,
Nick

How to generete helper methods in client stubs

Hello all
my web service is using complex types , when the client side it importing the wsdl
and generating client stubs , is it possible to include helper methods that help to
manage the complex type and not just getters and setters ?

Hi,
what version is the SAP PS running? If WebAs or higher, create an inbound synch interface containing your two parameters in the request structure and as many as you require in your response structure. Generate an Inbound ABAP proxy, where you can plug in some code, i.e. create and instantiate an object of the required type and make the call to the BAPI.
If SAP PS on lower than WebAs, then create a wrapper function module and make it RFC enabled. Then plug your code in here and do the same thing.
Watch out for commits!
Cheers,
Mark

Errors generating client stubs for web services

Hello,
We are having issues trying to generate client stubs from the Unifier wsdl document (mainservice.wsdl). I see this was generated using Axis 1.4 (2006). I normally use Apache CXF but it complains due to the use of RPC/encoding. I tried Axis2 but it complains about "SchemaCompilationException: can not find type {http://schemas.xmlsoap.org/soap/encoding/}Array from the parent schema". I am wondering if we need to use Axis 1.4?
If you have successfully generated client stubs from the wsdl documents please let me know which method was successful for you.
We have Unifier R9.12 installed.
Thank you
Rudy

I found more notes on what I had to do:
- the process above created package names like java.oracle_e1_bssv_jp010000
- we need to rename these to be proper package names.
- refresh the eclipse project so you see these folders
- select the package, right click, refactor, rename
- rename these to be like oracle.e1.bssv.jp010000 (remove the java. and replace _ with .)
- there will probably be a bunch of errors in individual java files you will need to fix.
- they are very easy, it should be a matter of just deleting the imports, these are not needed because they are in the same package.

Client & stub

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