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Manuál Linux
[Linux manuál]

getpeername: získat název peer soketu

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

Návod, kniha: POSIX Programmer's Manual

STRUČNĚ

#include <sys/socket.h>
 
 
int getpeername(int socket, struct sockaddr *restrict address,
 
       socklen_t *restrict address_len );
 

POPIS / INSTRUKCE

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.

NÁVRATOVÁ HODNOTA

Upon successful completion, 0 shall be returned. Otherwise, -1 shall be returned and errno set to indicate the error.

CHYBY / ERRORY

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.

PŘÍKLADY POUŽITÍ

None.

APPLICATION USAGE

None.

RATIONALE

None.

FUTURE DIRECTIONS

None.

SOUVISEJÍCÍ

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 .
2003 IEEE/The Open Group
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