GETPEERNAME (2)
get name of connected peer
SYNOPSIS
#include <sys/socket.h>
int getpeername(int s , struct sockaddr * name , socklen_t * namelen );
DESCRIPTION
Getpeername
returns the name of the peer connected to socket
s .
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
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.
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
parameter points to memory not in a valid part of the
process address space.
CONFORMING TO
SVr4, 4.4BSD (the
getpeername
function call first appeared in 4.2BSD).
NOTE
The third argument of
getpeername
is in reality an `int *' (and this is what BSD 4.* and libc4 and libc5 have).
Some POSIX confusion resulted in the present socklen_t.
The draft standard has not been adopted yet, but glibc2 already
follows it and also has socklen_t. See also
accept (2).
SEE ALSO
|
|
