[asio-users] How to tell which group a multicast packet was sent to

[Szabolcs S. <cc...@ma...>]

Hi,

I'm trying to receive multicast traffic for multiple groups on the same 
interface. I'm using the multicast receiver example as a basis.

I can subscribe to multiple groups, but when I receive a message in one 
of them, I need to know which group the packet was sent to originally. I 
thought about using the destination address of the packet, but that 
information seems unavailable in the async callback function. (The 
source address is there in sender_endpoint_, but I need the destination 
address.)

Is there a way to extract this information for each packet?

Thanks,
-- 
Szabi