Hi,
Looking at your gdb.txt, i feel that there is a memory corruption
somewhere.. because parent_tag_closed is supposed to have value 1, but
it have some junk value. Although I m not sure one reason can be you
are doing 0/0 kind of operation, That is just a guess.
If that so, can you check whether the request message have come
correctly?. you can do that by installing tcpmon [1]. or adding
following code in the start of axis2_svc_skel_CalculatorService_invoke
function in the axis2_svc_skel_CalculatorService.c file.
printf("%s\n", axiom_node_to_string(content_node, env));
[1] http://xml.ms.com/ns/msjava/cxfutils/examples/calculator
Thanks
Dimuthu
On Feb 1, 2008 10:31 PM, Zhang, Wayne (IT)
<[EMAIL PROTECTED]> wrote:
> Hi Dimuthu,
>
> I followed your instructions and was able to build my client, so many
> thanks on that. However, my client is crashing the server now (SIGSEGV)
> and as far as I can tell the request looks valid. I have attached the
> client request, the server log, my implementation of the server handler
> (axis2_skel_CalculatorService.c) and gdb back trace from the core file
> to this mail. Below are my server's debug statements before the crash:
>
>
> Started Simple Axis2 HTTP Server ...
> in axis2_skel_CalculatorService_Arithmetic()!
> num1=0.000000, num2=0.000000
> exiting axis2_skel_CalculatorService_Arithmetic()...
> Segmentation fault (core dumped)
>
>
> As you see, num1 and num2 are parsed wrong (I expected 50.000000 and
> 20.000000), so it seems axis2 is having trouble deserializing the
> arguments from the request message. Please advise on how I should debug
> the server.
>
> Thanks,
>
> Wayne
>
>
> >-----Original Message-----
> >From: Dimuthu Gamage [mailto:[EMAIL PROTECTED]
>
> >Sent: Thursday, January 31, 2008 5:44 PM
> >To: Apache AXIS C User List
> >Subject: Re: Questions/suggestions on WSDL2C
> >
> >Hi Zhang,
> >Please see my inline comment to the code..
> >
> >On Feb 1, 2008 1:30 AM, Zhang, Wayne (IT)
> ><[EMAIL PROTECTED]> wrote:
> >> Hi,
> >>
> >> Thanks to all for your quick responses. I think a simple
> >demo client
> >> (with useful inlined comments explaining what a user should do) will
> >> fit my need. WRT makefile generation, I understand it's hard to
> >> auto-generate one that works perfectly in _all_ projects, but it
> >> might be helpful to create a makefile.template kind of thing
> >to set up
> >> all the basic stuff (required defines, libs, include paths,
> >libpaths,
> >> etc) and let the users add their stuff on top of it.
> >>
> >> Now back to the problems I encountered with the client. (I
> >apologize
> >> for the following long copy-and-paste text, please tell me
> >the proper
> >> way if this is not recommended). WSDL2C generates the following
> >> header code but I'm not sure what to do with each function (see my
> >> inlined
> >> questions):
> >>
> >>
> >> /***************** function prototypes - for header file
> >> *************/
> >> /**
> >> * axis2_stub_create_CalculatorService
> >> * Create and return the stub with services populated
> >> * @param env Environment ( mandatory)
> >> * @param client_home Axis2/C home ( mandatory )
> >> * @param endpoint_uri Service endpoint uri( optional ) - if NULL
> >> default picked from WSDL used
> >> * @return Newly created stub object
> >> */
> >> axis2_stub_t*
> >> axis2_stub_create_CalculatorService(const axutil_env_t *env,
> >> axis2_char_t *client_home,
> >> axis2_char_t *endpoint_uri);
> >> // wz: I looked at the math example source and thought
> >> // this function should correspond to axis2_math_stub.c's
> >> axis2_math_stub_create_with_endpoint_uri_and_client_home()?
> >
> >Yea, It is exactly the same..
> >>
> >> /**
> >> * axis2_stub_populate_services_for_CalculatorService
> >> * populate the svc in stub with the service and operations
> >> * @param stub The stub
> >> * @param env environment ( mandatory)
> >> */
> >> void axis2_stub_populate_services_for_CalculatorService(
> >> axis2_stub_t *stub, const axutil_env_t *env);
> >> // wz: implement it a la axis2_math_stub.c's
> >> axis2_populate_axis_service()?
> >
> >Yea that also do the same functionality.
> >>
> >>
> >> /**
> >> * axis2_stub_get_endpoint_uri_of_CalculatorService
> >> * Return the endpoint URI picked from WSDL
> >> * @param env environment ( mandatory)
> >> * @return The endpoint picked from WSDL
> >> */
> >> axis2_char_t *
> >> axis2_stub_get_endpoint_uri_of_CalculatorService(const
> >axutil_env_t
> >> *env);
> >> // wz: no question here
> >>
> >>
> >> /**
> >> * Auto generated function declaration
> >> * for
> >> "Arithmetic|http://xml.ms.com/ns/msjava/cxfutils/examples/calculator";
> >> operation.
> >> * @param stub The stub (axis2_stub_t)
> >> * @param env environment ( mandatory)
> >>
> >> * @param _arithmetic
> >> * return
> >> adb_ArithmeticResponse_t*
> >> */
> >>
> >> adb_ArithmeticResponse_t*
> >> axis2_stub_op_CalculatorService_Arithmetic( axis2_stub_t *stub,
> >> const axutil_env_t *env,
> >> adb_Arithmetic_t* _arithmetic);
> >> // wz: how should this function extract input parameters from
> >> _arithmetic and send them to the server?
> >
> >HI I suppose you have adb_Arithemetic.h/.c is generated with
> >you.. If not you may have missed the -u in code generation.
> >i.e. retry with WSD2C.sh -uri your.wsdl -u.
> >
> >Then the adb_Arithetic.h will have create function and several
> >setters and getters. You can use these functions to feed data
> >to adb_Arithematic object. The same with adb_Arithematic_Response
> >
> > I.e. your code will look something like
> >
> >adb_Arithematic_t * ar;
> >adb_Arithematic_Response_t * ares;
> >
> >ar = adb_Arithematic_set_someVar(ar, env, 5); //here someVar
> >should be replaced with actual fields
> >
> >ares = axis2_stub_op_CalculatorService_Arithmetic(stuv, env, ar);
> >
> >int i = adb_Arithematic_Response_get_anotherVar(ares, env);
> >
> >
> >You can have a good idea on how to manipulate these adb object
> >from the "samples/codegen/client/calculator/test_calculator.c"
> >sample in the axis2/c pack.
> >
> >
> >>
> >>
> >> /**
> >> * Auto generated function declaration
> >> * for
> >> "Arithmetic|http://xml.ms.com/ns/msjava/cxfutils/examples/calculator";
> >> operation.
> >> * @param stub The stub
> >> * @param env environment ( mandatory)
> >>
> >> * @param _arithmetic
> >> * @param user_data user data to be accessed by the callbacks
> >> * @param on_complete callback to handle on complete
> >> * @param on_error callback to handle on error
> >> */
> >>
> >>
> >>
> >> void axis2_stub_start_op_CalculatorService_Arithmetic(
> >axis2_stub_t
> >> *stub, const axutil_env_t *env,
> >> adb_Arithmetic_t* _arithmetic,
> >> void *user_data,
> >> axis2_status_t ( AXIS2_CALL *on_complete ) (const axutil_env_t
> >> *,
> >> adb_ArithmeticResponse_t* _arithmeticResponse, void *data) ,
> >> axis2_status_t ( AXIS2_CALL *on_error ) (const axutil_env_t *,
> >> int exception, void *data) );
> >> // wz: is this the asynchronous version of
> >> axis2_stub_op_CalculatorService_Arithmetic()? What do I do
> >with data?
> >
> >Oops! we have missed to mention this is async in the doc comment.
> >(anway it is mentioned in the corrosponding .c file). I will
> >correct that in the template.
> >
> >Yea this is async. The data is optional user data that can to
> >be passed to the callback.. IN the callback function
> >prototype we have the data as the argument. This will be
> >really useful to the user to just parse the context to the callback.
> >
> >Thanks
> >Dimuthu
> >
> >>
> >>
> >> Thanks,
> >>
> >> Wayne Zhang
> >> Morgan Stanley | Technology
> >> [EMAIL PROTECTED]
> >>
> >>
> >>
> >> >-----Original Message-----
> >> >From: Dimuthu Gamage [mailto:[EMAIL PROTECTED]
> >> >Sent: Wednesday, January 30, 2008 10:29 PM
> >> >To: Apache AXIS C User List
> >> >Subject: Re: Questions/suggestions on WSDL2C
> >> >
> >> >Please see my inline comment.
> >> >
> >> >On Jan 31, 2008 8:07 AM, Samisa Abeysinghe <[EMAIL PROTECTED]> wrote:
> >> >> Dimuthu Gamage wrote:
> >> >> > Hi Zhang,
> >> >> >
> >> >> > Thanks for your suggestions.
> >> >> >
> >> >> > 1). In fact generating a demo client is a good idea. I
> >> >will look in to that.
> >> >> > For the time being, I'm using a ruby script to generate simple
> >> >> > demonstrations for stub and skels (it automatically
> >> >generates simple
> >> >> > logic with adb), if you find useful you can check it from
> >> >> >
> >http://people.apache.org/~dimuthu/leisure/23_oct/generate_demos.rb.
> >> >> >
> >> >>
> >> >> When there are so many operations, with complex params,
> >how are we
> >> >> supposed to generate a demo client?
> >> >
> >> >I think what we can provide is empty functions (with empty
> >> >logic) as in server side. The adb object manipulation should be
> >> >anyway done by the user. so we don't need to worry about complex
> >> >types in the demo client.. That indeed should be done by the user.
> >> >
> >> >BTW the ruby script I mentioned there, recursively fills the object
> >> >matching pattern in the generated code.. That works only
> >for "in-out"
> >> >MEP. Anyway what we are planning to generate with WSDL2C
> >tool is not
> >> >much complicated as that.
> >> >
> >> >Thanks
> >> >Dimuthu
> >> >
> >> >> >
> >> >> > 2). If we are generating makefiles we may need to think about
> >> >> > both linux and windows users. And we have to decide whether to
> >> >> > use automake build system or just a simple Makefile which
> >> >> > sometime not OS independent. May be some build system
> >expert can help on this.
> >> >> > Sanjaya,, Any Ideas?
> >> >> >
> >> >>
> >> >> IMHO, automake makes things too complicated here. We can
> >> >just generate
> >> >> a simple Makefile tat could be used directly.
> >> >>
> >> >> Thanks,
> >> >> Samisa...
> >> >>
> >> >>
> >> >>
> >> >> > Thanks
> >> >> > Dimuthu
> >> >> >
> >> >> >
> >> >> >
> >> >> > On Jan 31, 2008 12:18 AM, Zhang, Wayne (IT)
> >> >> > <[EMAIL PROTECTED]> wrote:
> >> >> >
> >> >> >>
> >> >> >> Hi,
> >> >> >>
> >> >> >> I just started looking at Axis2/C two days ago and it
> >> >looks pretty
> >> >> >> promising. However I hit a snag using WSDL2C, and I
> >> >couldn't find
> >> >> >> any solutions in the mail archive, so apologies if this
> >> >has already
> >> >> >> been answered before.
> >> >> >>
> >> >> >> I am using WSDL2C to generate a simple "calculator" client and
> >> >> >> server. I followed the directions in your user manual
> >> >> >> (http://ws.apache.org/axis2/c/docs/axis2c_manual.html#wsdl2c)
> >> >> >> and was able to generate my client stubs and server skeletons
> >> >successfully.
> >> >> >>
> >> >> >> Implementing the server skeleton is pretty straight
> >forward -- I
> >> >> >> just added my business logic in the /* TODO ... */ field.
> >> > However
> >> >> >> implementing the client isn't as easy. The user manual simply
> >> >> >> states "To do this, go through the header files generated and
> >> >> >> understand the API in line with the WSDL file that you used to
> >> >> >> generate the code." It will be great if you can provide
> >> >a step-by-step example showing which functions to implement in what
> >> >files.
> >> >> >>
> >> >> >> My other suggestions are:
> >> >> >>
> >> >> >> * Can WSDL2C generate a main() for the client that sets up the
> >> >> >> default env/options and make required axis calls such as
> >> >> >> axis2_endpoint_ref_create(),
> >> >axis2_svc_client_send_receive(), etc.
> >> >> >> and put
> >> >> >> /* TODO */ hints to prompt users to add his business logic?
> >> >> >>
> >> >> >> * It will be great if WSDL2C can also generate makefiles
> >> >to assist
> >> >> >> compiling the server and client, as well as install the
> >> >server in $AXIS_HOME/services.
> >> >> >> This will ease a user's development effort quite a bit.
> >> >> >>
> >> >> >> Many thanks in advance,
> >> >> >>
> >> >> >> Wayne Zhang
> >> >> >> Morgan Stanley | Technology
> >> >> >> 750 Seventh Avenue, 12th Floor | New York, NY 10019
> >> >> >> Phone: +1 212 762-1943
> >> >> >> [EMAIL PROTECTED]
> >> >> >>
> >> >> >>
> >> >> >> ________________________________
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