getpeername: získat název připojeného soketu

Originální popis anglicky: getpeername - get name of connected peer socket

Návod, kniha: Linux Programmer's Manual

STRUČNĚ

#include <sys/socket.h> int getpeername(int s, struct sockaddr *name, socklen_t *namelen);

POPIS / INSTRUKCE

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.

NÁVRATOVÁ HODNOTA

On success, zero is returned. On error, -1 is returned, and errno is set appropriately.

CHYBY / ERRORY

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.

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.

ODPOVÍDAJÍCÍ

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, also used by glibc. See also accept(2).

SOUVISEJÍCÍ

accept(2), bind(2), getsockname(2)