NAME

getpeername − get name of connected peer

SYNOPSIS

int getpeername(int s, caddr_t name, int ∗namelen);

DESCRIPTION

getpeername returns the name of the peer connected to socket s.  The int pointed to by the namelen parameter should be initialized to indicate the amount of space pointed to by name.  On return it contains the actual size of the name returned (in bytes).  The name is truncated if the buffer provided is too small. 

RETURN VALUE

0 is returned if the call succeeds, -1 if it fails. 

ERRORS

The call succeeds unless:

EBADF The argument s is not a valid descriptor. 

ENOTSOCK The argument s is a file, not a socket. 

ENOTCONN The socket is not connected. 

ENOMEM There was insufficient user memory for the operation to complete. 

ENOSR There were insufficient STREAMS resources available for the operation to complete. 

SEE ALSO

accept(3N), bind(3N), getsockname(3N), socket(3N)

NOTES

The type of address structure passed to accept depends on the address family.  UNIX domain sockets (address family AF_UNIX) require a socketaddr_un structure as defined in sys/un.h; Internet domain sockets (address family AF_INET) require a sockaddr_in structure as defined in netinet/in.h.  Other address families may require other structures.  Use the structure appropriate to the address family; cast the structure address to a generic caddr_t in the call to getpeername and pass the size of the structure in the namelen argument.