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I want to write a C++ wrapper for the Linux Socket API. In the socket() ctor the adress family (AF) is requested. I dont want to require the AF in the connect() signature again, becuase it has been already given in the constructor of socket. So how do I get the AF from an existing socket?
Damn. Searched about half an hour. Now after posting this question I found immiediately the answer.
getsockopt([…]) with option SO_DOMAIN (see socket options)