getpeername()

Get the name of the peer connected to a socket

Synopsis:

#include <sys/socket.h>

int getpeername( int s,
                 struct sockaddr * name,
                 socklen_t * namelen );

s: The socket whose connected peer you want to get.
name: A buffer where the function can store the name of the peer.
namelen: A pointer to a socklen_t object that initially specifies the size of the buffer. This function stores the actual size of the name, in bytes, in this object.

libsocket

Use the -l socket option to qcc to link against this library.

The getpeername() function returns the name of the peer connected to socket s. The name is truncated if the buffer provided is too small.

EBADF: Invalid descriptor s.
EFAULT: The name parameter points to memory not in a valid part of the process address space.
ENOBUFS: Insufficient resources were available in the system to perform the operation.
ENOTCONN: The socket isn't connected.