How to get ip address of current socket

[C++ Programming]

Dear all,

I have two lan cards.
So I have two ip address, too.

When I connect to server, how to get ip address of connected socket (clinet side NOT server side).

I could get ip address list of desktop using 'gethostbyname()'
But I didn't figure what ip address is current ip(lan card)

Do you have any solution?

Thanks.
cozyu