getpeername(2)                System Calls Manual               getpeername(2)

JMENO
       getpeername - vrat adresu vzdaleneho konce soketu

KNIHOVNA
       Standardni knihovna C (libc, -lc)

POUZITI
       #include <sys/socket.h>

       int getpeername(int sockfd, struct sockaddr *restrict addr,
                       socklen_t *restrict addrlen);

POPIS
       getpeername()  returns the address of the peer connected to the socket
       sockfd, in the buffer pointed to by addr.  The addrlen argument should
       be initialized to indicate the amount of space pointed to by addr.  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 returned address is truncated if the buffer provided is too small;
       in this case, addrlen will return a value greater than was supplied to
       the call.

NAVRATOVE HODNOTY
       On success, zero is returned.  On error, -1 is returned, and errno is
       set to indicate the error.

CHYBOVE STAVY
       EBADF  Argument sockfd neni platnym deskriptorem.

       EFAULT Argument addr ukazuje na pamet v neplatne casti adresoveho
              prostoru procesu.

       EINVAL addrlen je neplatne (napriklad zaporne cislo).

       ENOBUFS
              Nedostatek systemovych zdroju k provedeni operace.

       ENOTCONN
              Soket neni spojen.

       ENOTSOCK
              The file descriptor sockfd does not refer to a socket.

STANDARDY
       POSIX.1-2008.

HISTORIE
       POSIX.1-2001, SVr4, 4.4BSD (first appeared in 4.2BSD).

POZNAMKY
       For stream sockets, once a connect(2)  has been performed, either
       socket can call getpeername()  to obtain the address of the peer
       socket.  On the other hand, datagram sockets are connectionless.
       Calling connect(2)  on a datagram socket merely sets the peer address
       for outgoing datagrams sent with write(2)  or recv(2).  The caller of
       connect(2)  can use getpeername()  to obtain the peer address that it
       earlier set for the socket.  However, the peer socket is unaware of
       this information, and calling getpeername()  on the peer socket will
       return no useful information (unless a connect(2)  call was also
       executed on the peer).  Note also that the receiver of a datagram can
       obtain the address of the sender when using recvfrom(2).

DALSI INFORMACE
       accept(2), bind(2), getsockname(2), ip(7), socket(7), unix(7)

PREKLAD
       Preklad teto prirucky do spanelstiny vytvorili Pavel Heimlich
       <tropikhajma@gmail.com>

       Tento preklad je bezplatna dokumentace; Prectete si GNU General Public
       License Version 3 <https://www.gnu.org/licenses/gpl-3.0.html> nebo
       novejsi ohledne podminek autorskych prav. Neexistuje ZADNA ODPOVEDNOST.

       Pokud narazite na nejake chyby v prekladu teto prirucky, poslete e-mail
       na adresu <translation-team-cs@lists.sourceforge.net>.

Linux man-pages 6.06           31. rijna 2023                   getpeername(2)