getpeernamefunction returns the address of the socket that socket is connected to; it stores the address in the memory space specified by addr and length-ptr. It stores the length of the address in
See section Socket Addresses, for information about the format of the
address. In some operating systems,
getpeername works only for
sockets in the Internet domain.
The return value is
0 on success and
-1 on error. The
errno error conditions are defined for this function:
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