1GETPEERNAME(P)             POSIX Programmer's Manual            GETPEERNAME(P)
2
3
4

NAME

6       getpeername - get the name of the peer socket
7

SYNOPSIS

9       #include <sys/socket.h>
10
11       int getpeername(int socket, struct sockaddr *restrict address,
12              socklen_t *restrict address_len);
13
14

DESCRIPTION

16       The getpeername() function shall retrieve the peer address of the spec‐
17       ified socket, store this address in the sockaddr structure  pointed  to
18       by  the  address  argument, and store the length of this address in the
19       object pointed to by the address_len argument.
20
21       If the actual length of the address is greater than the length  of  the
22       supplied sockaddr structure, the stored address shall be truncated.
23
24       If the protocol permits connections by unbound clients, and the peer is
25       not bound, then the value stored in the object pointed to by address is
26       unspecified.
27

RETURN VALUE

29       Upon successful completion, 0 shall be returned. Otherwise, -1 shall be
30       returned and errno set to indicate the error.
31

ERRORS

33       The getpeername() function shall fail if:
34
35       EBADF  The socket argument is not a valid file descriptor.
36
37       EINVAL The socket has been shut down.
38
39       ENOTCONN
40              The socket is not connected or otherwise has not  had  the  peer
41              pre-specified.
42
43       ENOTSOCK
44              The socket argument does not refer to a socket.
45
46       EOPNOTSUPP
47              The operation is not supported for the socket protocol.
48
49
50       The getpeername() function may fail if:
51
52       ENOBUFS
53              Insufficient  resources were available in the system to complete
54              the call.
55
56
57       The following sections are informative.
58

EXAMPLES

60       None.
61

APPLICATION USAGE

63       None.
64

RATIONALE

66       None.
67

FUTURE DIRECTIONS

69       None.
70

SEE ALSO

72       accept() , bind() , getsockname() , socket()  ,  the  Base  Definitions
73       volume of IEEE Std 1003.1-2001, <sys/socket.h>
74

76       Portions  of  this text are reprinted and reproduced in electronic form
77       from IEEE Std 1003.1, 2003 Edition, Standard for Information Technology
78       --  Portable  Operating  System  Interface (POSIX), The Open Group Base
79       Specifications Issue 6, Copyright (C) 2001-2003  by  the  Institute  of
80       Electrical  and  Electronics  Engineers, Inc and The Open Group. In the
81       event of any discrepancy between this version and the original IEEE and
82       The  Open Group Standard, the original IEEE and The Open Group Standard
83       is the referee document. The original Standard can be  obtained  online
84       at http://www.opengroup.org/unix/online.html .
85
86
87
88IEEE/The Open Group                  2003                       GETPEERNAME(P)
Impressum