问题
If I have a socket file descriptor connected (either by connect or by bind), type SOCK_STREAM, is it possible to get the remote address / IP address?
I need to do this within a function where I don't have any other data than the socket file descriptor.
回答1:
getpeername
回答2:
See the getsockname() system call.
来源：https://stackoverflow.com/questions/4770127/get-remote-address-ip-c-berkeley-sockets