[Paraview-developers] protobuf problem

[Biddiscombe, John A.]

Sebastien

For our computation steering setup, we parse an input XML file, and use this to generate a servermanager XML file which needs to be registered with the proxyManager, the client does all the parsing and can register the XML fine, but since the upgrade to the newer PV using protobuf, when we send the servermanager XML to the server tasks, one always dies.
What we have is a vtkDSMManager class on the server(s) and it has a 
  void SetHelperProxyXMLString(const char *xmlstring);
  vtkGetStringMacro(HelperProxyXMLString);
and the string passed in is a complete ServerManager compliant XML - just like you'd create by hand usually (filters.xml etc), but we are generating the strings and passing them across.

It seems to be here that stuff dies. I may be wrong, but I wonderered if the protobuf was doing some parsing of the strings and getting confused by keywords we've used ...

The message is passed using the standard proxy cline tserver mechanism
    pqSMAdaptor::setElementProperty(
      this->Internals->DSMProxy->GetProperty("HelperProxyXMLString"), HelperProxyXML.c_str());
    this->Internals->DSMProxy->UpdateProperty("HelperProxyXMLString");

??

thanks

JB

-----Original Message-----
From: Sebastien Jourdain [mailto:sebastien.jourdain at kitware.com] 
Sent: 11 July 2011 14:57
To: Biddiscombe, John A.
Cc: paraview-developers at paraview.org
Subject: Re: [Paraview-developers] protobuf problem

Hi John,

I don't think that an embeded XML content could interfere with the
protobuf message except if you use some custom network communication.
Could you be more precise when you say: "My client is sending an XML
file to the server"
What I mean by that, is how did you try to send that XML/String to the
server ? Using an invoke, InformationHelper, something else ?

Thanks,

Seb

On Mon, Jul 11, 2011 at 5:00 AM, Biddiscombe, John A. <biddisco at cscs.ch> wrote:
> I'm not 100% certain about the following error/question, but since I upgraded to pv-3.11 I have a very peculiar error
>
> vtkmsg = 0x00000000093762d0 "ERROR: In ..\..\..\..\Code\pv\ParaViewCore\ServerImplementation\vtkPVSessionCore.cxx, line 460
> vtkPVSessionCore (0000000002FE7930): Failed to parse protobuf message.
>
> the catch is that my client is sending an XML file to the server as a string. I suspect that the XML embedded in the message is somehow interfering with the protobuf stuff.
>
> Is this possible? Can I wrap my XML in something to make it go away?
>
> thanks
>
> JB
>
>
> --
> John Biddiscombe,                            email:biddisco @ cscs.ch
> http://www.cscs.ch/
> CSCS, Swiss National Supercomputing Centre  | Tel:  +41 (91) 610.82.07
> Via Cantonale, 6928 Manno, Switzerland      | Fax:  +41 (91) 610.82.82
>
>
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