I am testing a delphi 10 soap program.
I did import the wsdl (soap 12) as a separate unit. no pb on importing with the wizard default parameters. (similar to old versions of delphi)
when running a call to a specific function I have this error message:
`Debugger Exception Notification
Project WebapiConfigServices.exe raised exception class ERemotableException with message 'Unmarshalling Error: unrecognized type name: StringAssetInfo. Did you mean {http://metadataservice.services.xxxx.com}StringAssetInfo? '.`
I tried different options to import the WSDL, as discussed in this discussion
didn't help.
SOAPUI or python call are working.
seems that the program receive the XML answer but doesn't know how to manipulate the object 'StringAssetInfo'.
I don't find a right way to debug the software. Is there a specific function I can put a breakpoint?
is there any other solution I can test?
does someone know an external library to build a right wrapper around the wsdl (soap 1.2) ?
thanks for your help
se
Related
We are facing the following issue:
The architecture is as follows:
A c++ native client application is connected to a native c++ server application via pipe RPC based on a IDL file.
I'm not particular savvy in this domain and havent coded the relevant parts but it works since a long time.
Since some days, one of our client-server tests fails.
Examining the issue shows that there is an exception in the very low-level RPC communication part:
Exception thrown at 0x00007FFF2649A388 (KernelBase.dll) in application.exe: 0x000006F7: The stub received bad data. occurred
The stack contains calls to functions in rpcrt4.dll.
Now the thing is we don't have any recent modifications in these parts of the code.
Neither in the functions on the client involved in that particular server RPC call.
Also, the same error occurs on my dev machine also with an older version of the code (for which the tests passed fine when this older version was tested on the test machines).
So i suspect some external issue, like updates to the windows libraries or such.
Did anyone encounter this error out of a sudden?
How should i go forward to debug and pinpoint the issue?
What i have done so far:
Debugged the client and server, and i see the call coming in on the server and the function executes fine.
It is when the result is being sent back to the client when the exception is fired on the client.
This is on Windows 10 x64, developed with Visual C++ 2017.
The problem
Our web app creates a java.net.URL passing our custom implementation of a URLStreamHandler to the constructor.
On that URL, we call url.openConnection().
The java.net.URL code calls openConnection() on our handler.
At this point, we get a NoClassDefFoundError for a class used by the handler.
This happens with Glassfish 3.1, but doesn't happen with Tomcat, WebLogic, and JBoss. (Also, it used to work on older versions of Glassfish.)
What I tried
I tried adding a glassfish-web.xml to tell Glassfish to load classes first from the web app (as expected), but this doen't solve the problem.
<glassfish-web-app>
<class-loader delegate="false"/>
</glassfish-web-app>
How can I solve this problem, and why is this happening?
GF delegation model always delegates java.* and javax.* up the classloader chain.
A NoClassDefFoundError can be caused by the JVM not finding a class, but also to a failure of that happened earlier in a static initializer. The message for the NoClassDefFoundError was Could not initialize class org.orbeon.oxf.resources.handler.HTTPURLConnection, and there was indeed an error that happened earlier in the static initializer for that class. Solving that error fixed the NoClassDefFoundError.
My C++ app needs to deal with SSCE database files belonging to different versions. Right now, I have no way of knowing the version of the database.
The problem is that if the version of the OLEDB SSCE provider mismatches the version of the database file, IDBInitialize::Initialize() fails with E_FAIL. One has to obtain the respesctive IErrorInfo object to get a meaningful error message.
The point is that the error code of E_FAIL does not tell me whether the failure is because of the version mismatch or for some other reason. In the first case, I should retry with another SSCE provider, while in the second the application should terminate.
How can I implement this logic? Is there some API that I can invoke before calling IDBInitialize::Initialize() to check the version compatibility? Is there a way to get the real error code instead of the opaque E_FAIL?
Thanks.
You can look at the first bytes of the file - see this sample in C# - http://erikej.blogspot.com/2010/08/how-to-upgrade-version-3x-database-file.html
I've beenworking with the IntraWeb framework on Borland C++Builder. Sometimes it happens that an application crashes because of a strange uncaught exception:
An unhandled application error has occured within My IntraWeb Application.
...
Error message raised by the application: Class TIWTimer not found
This happens when a new session is started. For example, by entering the address in a browser.
Also, the message appears in the classic IntraWeb error web page
The class that cannot be found is either TIWTimer or TIWButton but I think this is irrelevant.
The problem seems to occur randomly and sometimes goes away with a rebuild, but other times it will go away by rewriting the code or starting from a new project.
So, the question is, how come the link error is not found at link-time?
Why does it occur at all, since those classes belong to the standard IW library?
Has anyone had the same issue?
How can it be solved?
Use Intraweb XII in C++Builder XE2, it has good improvement and bug fixes.
in this version you can assign urls to forms, for example:
myhost/login.htm or myhost/login.aspx
for more information see this
I've created web-service in Delphi XE using WSDL importer.
Delphi generated for me module ITransmitter1.pas with
ITransmitter interface and GetITransmitter function.
To use webservice i use:
var Transmitter: ITransmitter;
begin
Transmitter := GetITransmitter(True, '', nil);
Transmitter.Transmit(Memo1.Text, OutXML);
end;
But i cant see anywhere body of method Transmit ...
In ITransmitter.pas i see:
InvRegistry.RegisterInterface(TypeInfo(ITransmitter), 'urn:TransmitterIntf-ITransmitter', 'utf-8');
InvRegistry.RegisterDefaultSOAPAction(TypeInfo(ITransmitter), 'urn:TransmitterIntf-ITransmitter#Transmit');
If i comment this lines i get "interface not supported" error.
As i see here delphi is adding method in RunTime !
How does it work ? Can i add method in runtime to my own class ?
If you created a web service client with the WSDL importer, the generated client code will invoke a method on the server. So in fact, the method 'body' (code) is on the web service server.
Delphi generates a Soap request based on the WSDL, and behind the scenes RTTI (introspection) is used to generate parameters etc. of the web service call as XML. This XML is sent to the server, which executes the method implementation and sends back a Soap response.
Things are opposite if you create the web service server, in this case the Delphi application of course needs to implement all method bodies.
You're in fact calling a method defined in a Interface, which in turn inherits from IInvokable, declared in System.pas.
If you check your source code you'll note that no local object in your project implements the IInvokable interface you're calling, that's because that method is remotely executed in the server.
Before that occurs, there's some pascal code used to create a proper SOAP request to the server, send it and then wait and interpret the server response, consider this implementation details. If you're interested in know a bit more how this works, enable the "use debug .dcus" compiler option, so you can debug inside the VCL/RTL.
Then, as usual, use the StepInto (F7) command to ask the debugger to execute the Transmit method step by step... after some assembler in the TRIO.GenericStub method you'll get to the TRIO.Generic method where the packet is prepared and sent.
For a btSOAP binding I'm using to write this response, the relevant part starts at line 943 in the Rio.pas unit:
try
FWebNode.Execute(Req, Resp);
finally
{ Clear Outbound headers }
FHeadersOutBound.Clear;
end;
THTTPReqResp.Execute then uses wininet.dll functions to perform the connection, send and receive of information with the server using.
There are some levels you can go deep with this... how far you want to go will depend on your interests and the great amount of details are far beyond the scope of my answer here... feel free to post more questions with specific tings you're interested in.
I'm not sure about, but details can change between Delphi versions... I'm using Delphi XE right now.