getpeername -- get name of connected peer
Standard C Library (libc, -lc)
#include <sys/types.h>
#include <sys/socket.h>
int
getpeername(int s, struct sockaddr *name, socklen_t *namelen);
The getpeername() system call returns the name of the peer connected to
socket s. The namelen argument 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.
The getpeername() function returns the value 0 if successful; otherwise
the value -1 is returned and the global variable errno is set to indicate
the error.
The call succeeds unless:
[EBADF] The argument s is not a valid descriptor.
[ECONNRESET] The connection has been reset by the peer.
[ENOTSOCK] The argument s is a file, not a socket.
[ENOTCONN] The socket is not connected.
[ENOBUFS] Insufficient resources were available in the system to
perform the operation.
[EFAULT] The name argument points to memory not in a valid part
of the process address space.
accept(2), bind(2), getsockname(2), socket(2)
The getpeername() system call appeared in 4.2BSD.
FreeBSD 5.2.1 June 4, 1993 FreeBSD 5.2.1 [ Back ] |