Originální popis anglicky:
getpeername - get the name of the peer socket
Návod, kniha: POSIX Programmer's Manual
#include <sys/socket.h>
int getpeername(int
socket, struct sockaddr
*restrict address,
socklen_t *restrict
address_len );
The
getpeername() function shall retrieve the peer address of the
specified socket, store this address in the
sockaddr structure pointed
to by the
address argument, and store the length of this address in the
object pointed to by the
address_len argument.
If the actual length of the address is greater than the length of the supplied
sockaddr structure, the stored address shall be truncated.
If the protocol permits connections by unbound clients, and the peer is not
bound, then the value stored in the object pointed to by
address is
unspecified.
Upon successful completion, 0 shall be returned. Otherwise, -1 shall be returned
and
errno set to indicate the error.
The
getpeername() function shall fail if:
- EBADF
- The socket argument is not a valid file
descriptor.
- EINVAL
- The socket has been shut down.
- ENOTCONN
- The socket is not connected or otherwise has not had the
peer pre-specified.
- ENOTSOCK
- The socket argument does not refer to a socket.
- EOPNOTSUPP
- The operation is not supported for the socket protocol.
The
getpeername() function may fail if:
- ENOBUFS
- Insufficient resources were available in the system to
complete the call.
The following sections are informative.
None.
None.
None.
None.
accept() ,
bind() ,
getsockname() ,
socket() , the
Base Definitions volume of IEEE Std 1003.1-2001,
<sys/socket.h>
Portions of this text are reprinted and reproduced in electronic form from IEEE
Std 1003.1, 2003 Edition, Standard for Information Technology -- Portable
Operating System Interface (POSIX), The Open Group Base Specifications Issue
6, Copyright (C) 2001-2003 by the Institute of Electrical and Electronics
Engineers, Inc and The Open Group. In the event of any discrepancy between
this version and the original IEEE and The Open Group Standard, the original
IEEE and The Open Group Standard is the referee document. The original
Standard can be obtained online at http://www.opengroup.org/unix/online.html
.
