NAME
getpeername - get name of connected peer socket
SYNOPSIS
#include <sys/socket.h>
I int getpeername(int s , struct sockaddr * name , socklen_t * namelen );
DESCRIPTION
R getpeername ()
returns the name of the peer connected to socket
R s .
The
namelen
parameter should be initialized to indicate the amount of space pointed to
by
R 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
On success, zero is returned.
On error, -1 is returned, and
errno
is set appropriately.
ERRORS
EBADF
The argument
s
is not a valid descriptor.
EFAULT
The
name
parameter points to memory not in a valid part of the
process address space.
EINVAL
namelen
is invalid (e.g., is negative).
ENOBUFS
Insufficient resources were available in the system
to perform the operation.
ENOTCONN
The socket is not connected.
ENOTSOCK
The argument
s
is a file, not a socket.
CONFORMING TO
SVr4, 4.4BSD (the
R getpeername ()
function call first appeared in 4.2BSD), POSIX.1-2001.
NOTES
The third argument of
R getpeername ()
is in reality an
int *
(and this is what 4.x BSD and libc4 and libc5 have).
Some POSIX confusion resulted in the present
R socklen_t ,
also used by glibc.
See also
accept(2).
SEE ALSO
ČLÁNKY DO MAILU