Open Source Sip: Using ATLSIP in Win32 C++ Application

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6 Replies Last post: Jul 24, 2009 1:55 PM by sam

sam

19 posts since
Jul 20, 2009

Jul 22, 2009 4:03 PM

Using ATLSIP in Win32 C++ Application - Call Back Functions like OnLogSIPMessage()

Dear

We are implementing OpenSIPStack in our Win32 based C++ appliation.

We have created the the OpenSIPStackCtl Object with following line an can also access the member function like MakeCall().

CoCreateInstance(__uuidof(OpenSIPStackCtl), NULL, CLSCTX_INPROC_SERVER, __uuidof(IOpenSIPStackCtl), (LPVOID *)&pOpenSIPStackCtl);

So far so good. But haw to get access to the Call Back funktion like OnLogSIPMessage() or better said what do we have to do that SIPATL call our Call Back Function for this Event. We did have a look at dispinterface _IOpenSIPStackCtlEvents. But did not see what code is needed "to get this function called back".

Thanks for any help or coded snipped to see how we have to handle the Event from class _IOpenSIPStackCtlEvents, Samuel

joegen

519 posts since
Apr 28, 2007

1. Jul 22, 2009 11:16 PM

in response to: sam

Re: Using ATLSIP in Win32 C++ Application - Call Back Functions like OnLogSIPMessage()

1. I am not a COM developer so I apologize if I wont be of any help how to use ATLSIP in a C++ app.

2. If you are using C++, I do not see any reason why you wouldnt link to opensipstack directly and simply use SoftphoneInterface. ATLSIP is merely a wrapper for this class. (see MFC sample)

3. The forum is not very good in handling discussion that require access to source codes. I would advise that you bring this thread in opensipstack-devel sourceforge mailing list

sam

19 posts since
Jul 20, 2009

2. Jul 23, 2009 3:13 PM

in response to: joegen

Re: Using ATLSIP in Win32 C++ Application - Call Back Functions like OnLogSIPMessage()

Yes I see. For small Application or "SoftPhone only" applications it would be best to link OpenSIPStak.lib directly.

The problem is that we already have a large Application. When we try to link OpenSIPStak.lib we get a lot of errors of already defined symbols. like following

1>msvcprtd.lib(MSVCP90D.dll) : error LNK2005: "public: __thiscall std::_Lockit::~_Lockit(void)" (??1_Lockit@std@@QAE@XZ) already defined in libcpmtd.lib(xlock.obj)

1>msvcprtd.lib(MSVCP90D.dll) : error LNK2005: "public: __thiscall std::_Lockit::_Lockit(int)" (??0_Lockit@std@@QAE@H@Z) already defined in libcpmtd.lib(xlock.obj)

1>msvcprtd.lib(MSVCP90D.dll) : error LNK2005: "void __cdecl std::_Debug_message(unsigned short const *,unsigned short const *,unsigned int)" (?_Debug_message@std@@YAXPBG0I@Z) already defined in libcpmtd.lib(stdthrow.obj)

1>msvcprtd.lib(MSVCP90D.dll) : error LNK2005: "public: virtual __thiscall std::basic_ostream<char,struct std::char_traits<char> >::~basic_ostream<char,struct std::char_traits<char> >(void)" (??1?$basic_ostream@DU?$char_traits@D@std@@@std@@UAE@XZ) already defined in libcpmtd.lib(cout.obj)

1>msvcprtd.lib(MSVCP90D.dll) : error LNK2005: "public: virtual __thiscall std::basic_ios<char,struct std::char_traits<char> >::~basic_ios<char,struct std::char_traits<char> >(void)" (??1?$basic_ios@DU?$char_traits@D@std@@@std@@UAE@XZ) already defined in libcpmtd.lib(cout.obj)

So I'm not shure if there really is possibility to use OpenSIPStack as static linked library in our Application.

Regards Samuel

joegen

519 posts since
Apr 28, 2007

3. Jul 23, 2009 8:59 PM

in response to: sam

Re: Using ATLSIP in Win32 C++ Application - Call Back Functions like OnLogSIPMessage()

in most cases, this can be safely ignored using /IGNORE:MULTIPLE linker flag. It seems that you application and opensipstack are linked to the runtime differently. If your application is linked to the runtime using "shared libs" then you must also link opensipstack to the runtime using shared. That should get rid of the multiple links.

sam

19 posts since
Jul 20, 2009

4. Jul 24, 2009 3:54 AM

in response to: joegen

Re: Using ATLSIP in Win32 C++ Application - Call Back Functions like OnLogSIPMessage()

Thanks. When using same link option () for application an OpenSIPStack the program can be linked successfully.

An other problem occurs. OpenSIPStack seem to deal with its own process class. It seems not to work when the win32 application has its own WinMain() entry point where the Application process is started.

This is from osutils.cxx, the current Process (PProcessInstance) is null.

PProcess & PProcess::Current()
{
if (PProcessInstance == NULL) {
cerr << "Catastrophic failure, PProcess::Current() = NULL!!\n";
#if defined(_MSC_VER) && defined(_DEBUG) && !defined(_WIN32_WCE)
__debugbreak();
#endif
_exit(1);
}
return *PProcessInstance;
}

Is there any possibility to let the application handle the process or must this done by OpenSIPStack lib ?

Thanks and best Regards, Samuel

joegen

519 posts since
Apr 28, 2007

5. Jul 24, 2009 4:32 AM

in response to: sam

Re: Using ATLSIP in Win32 C++ Application - Call Back Functions like OnLogSIPMessage()

{quote:title=sam wrote:}{quote}
Thanks. When using same link option () for application an OpenSIPStack the program can be linked successfully.

An other problem occurs. OpenSIPStack seem to deal with its own process class. It seems not to work when the win32 application has its own WinMain() entry point where the Application process is started.

You need to instantiate PProcess prior to any calls to opensipstack objects even if its only a dummy. In ATLSIP for example I have the following code to do this

PDECLARE_PROCESS( DummyPProcess, PProcess,"ATLSIP","ActiveSIPControl",MAJOR_VERSION,MINOR_VERSION,BUILD_TYPE,BUILD_NUMBER)
static DummyPProcess * process = new DummyPProcess();  // active for the life of the DLL
void DummyPProcess::Main(){};

sam

19 posts since
Jul 20, 2009

6. Jul 24, 2009 1:55 PM

in response to: joegen

Re: Using ATLSIP in Win32 C++ Application - Call Back Functions like OnLogSIPMessage()

Thanks [~26]. Now we can also start the application successfully and have also the OpenSIPStack Event functions called back.

We do just check the availabe functions of class SoftPhoneInterface and will try to make some calls.

Samuel

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Jul 22, 2009 4:03 PM

Using ATLSIP in Win32 C++ Application - Call Back Functions like OnLogSIPMessage()

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