[SOLVED] Crash when receiving user defined packet [2.14]

[Antoine.YVAN]

Hi to all ! 

I am encountering a problem when trying to use user defined packets.

Here it is =>

 

My setup :

- Windows 10

- Unigine 2.14

- Visual Studio 2019

 

What I want to do :

- Send a user defined packet from my Host to Unigine's IG

- Receive the packet and read the data

 

What happens : 

- My Host sends the User defined packet (loop every 10s for debugging purpose)

- When the IG receives the packet, it crashes after running the method packet->getData();

I can't find anything relevant with my debugger.

 

Here is the code (found on the docs) :

	// ... (default WorldLogic init)
	Unigine::Plugins::IG::CIGI::Connector* cigi = IG::CIGI::Connector::get();
	IG::CIGI::CigiRecvCallback* callbackView = (IG::CIGI::CigiRecvCallback*)MakeCallback(this, &AppWorldLogic::on_recv_update_view);
	cigi->addReceivePacketCallback(203, callbackView);

	return 1;
}

void AppWorldLogic::on_recv_update_view(IG::CIGI::CigiHostUserDefined* packet)
{
	Log::warning("recv_update_view\n");
	unsigned char* data = packet->getData();

	return;
}

 

I don't know if I am doing something wrong here.

Some help would be really appreciated ! :)

 

Best Regards,

Antoine

[cash-metall]

Hello!
this is mistake in the documentation: this code snippet from the previous version.
in 2.14, callbacks take a pointer to the CigiHostPacket class, which you need to cast to userdefined

int AppWorldLogic::init()
{
    // CigiRecvCallback its Callback for void(CigiHostPacket *) signature
    cigi->addReceivePacketCallback(202, MakeCallback(this, &AppWorldLogic::on_recv_user_packet));
    return 1;
}


void AppWorldLogic::on_recv_user_packet(IG::CIGI::CigiHostPacket * base_packet)
{
    CigiHostUserDefined * packet = dynamic_cast<CigiHostUserDefined *>(base_packet);
    unsigned char * request_data = packet->getData();  // read
}

 

[Antoine.YVAN]

Hello,

Indeed this works as expected!

 

Thanks.